[edk2-devel] [PATCH] AlderlakeSiliconPkg: Update for SPI2 Protocol and Identify flash regions by GUID

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* [edk2-devel] [PATCH] AlderlakeSiliconPkg: Update for SPI2 Protocol and Identify flash regions by GUID
@ 2024-02-02  6:32 dorax.hsueh
  2024-04-08 22:34 ` Nate DeSimone
  0 siblings, 1 reply; 6+ messages in thread
From: dorax.hsueh @ 2024-02-02  6:32 UTC (permalink / raw)
  To: devel; +Cc: DoraX Hsueh, Sai Chaganty, Rosen Chuang, Saloni Kasbekar,
	Haoyu Tang

From: DoraX Hsueh <dorax.hsueh@intel.com>

https://bugzilla.tianocore.org/show_bug.cgi?id=4664

1. Updates references to the "PCH_SPI_PROTOCOL" to instead refer to "PCH_SPI2_PROTOCOL".
2. Updates the library to identify flash regions by GUID and internally
map the GUID entries to values specific to AlderlakeSiliconPkg.
3. Libs/modules that need to reference IntelSiliconPkg are updated.
4. Add gUsbConfigGuid to fix USB not working issue in OS.

Cc: Sai Chaganty <rangasai.v.chaganty@intel.com>
Cc: Rosen Chuang <rosen.chuang@intel.com>
Cc: Saloni Kasbekar <saloni.kasbekar@intel.com>
Cc: Haoyu Tang <haoyu.tang@intel.com>
Signed-off-by: DoraX Hsueh <dorax.hsueh@intel.com>
---
 .../Cpu/Include/Register/CommonMsr.h          |   4 +
 .../Fru/AdlPch/CommonLib.dsc                  |   2 +-
 .../AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc |   2 -
 .../Include/ConfigBlock/Usb/UsbConfig.h       | 223 ++++++++
 .../Include/Library/SpiAccessLib.h            |  44 ++
 .../Include/Register/PttPtpRegs.h             |  27 +
 .../Spi/IncludePrivate/Library/SpiCommonLib.h |  60 +--
 .../Spi/IncludePrivate/Register/SpiRegs.h     |   9 +-
 .../PeiDxeSmmSpiAccessLib.inf                 |  33 ++
 .../PeiDxeSmmSpiAccessLib/SpiAccessLib.c      |  75 +++
 .../IpBlock/Spi/Library/PeiSpiLib/PchSpi.c    |   2 +-
 .../Spi/Library/PeiSpiLib/PeiSpiLib.inf       |   2 +-
 .../BaseSpiCommonLib/BaseSpiCommonLib.inf     |  19 +-
 .../BaseSpiCommonLib/SpiCommon.c              | 494 ++++++++++++------
 .../AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c |  34 +-
 .../IpBlock/Spi/Smm/SpiSmm.inf                |   5 +-
 .../IncludePrivate/Library/SmmPchPrivateLib.h |  27 +
 .../SmmPchPrivateLib/SmmPchPrivateLib.c       |  83 +++
 .../SmmPchPrivateLib/SmmPchPrivateLib.inf     |  32 ++
 .../Product/Alderlake/SiPkgDxeLib.dsc         |   5 +
 Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec   |   7 +-
 21 files changed, 990 insertions(+), 199 deletions(-)
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Include/ConfigBlock/Usb/UsbConfig.h
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf

diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h b/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h
index caa0e67b..44a476c0 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h
@@ -56,5 +56,9 @@ typedef union {
 
 } MSR_CORE_THREAD_COUNT_REGISTER;
 
+/**
+  Special Chipset Usage MSR
+**/
+#define MSR_SPCL_CHIPSET_USAGE 0x000001FE
 
 #endif /* _COMMONMSR_h */
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc
index 3f508f83..ee5800a9 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc
@@ -11,7 +11,7 @@
 
   EspiLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Espi/Library/PeiDxeSmmEspiLib/PeiDxeSmmEspiLib.inf
 
-
+  SpiAccessLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
   PmcLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Pmc/Library/PeiDxeSmmPmcLib/PeiDxeSmmPmcLib.inf
   PmcPrivateLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Pmc/LibraryPrivate/PeiDxeSmmPmcPrivateLib/PeiDxeSmmPmcPrivateLib.inf
   SpiCommonLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc
index ebe2bbfd..cbaf8e37 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc
@@ -5,8 +5,6 @@
 #   SPDX-License-Identifier: BSD-2-Clause-Patent
 ##
 
-  SpiLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
-
   GpioHelpersLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Gpio/LibraryPrivate/PeiGpioHelpersLib/PeiGpioHelpersLib.inf
 
 
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Include/ConfigBlock/Usb/UsbConfig.h b/Silicon/Intel/AlderlakeSiliconPkg/Include/ConfigBlock/Usb/UsbConfig.h
new file mode 100644
index 00000000..47bc86cd
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Include/ConfigBlock/Usb/UsbConfig.h
@@ -0,0 +1,223 @@
+/** @file
+  Common USB policy shared between PCH and CPU
+  Contains general features settings for xHCI and xDCI
+
+@copyright
+  INTEL CONFIDENTIAL
+  Copyright 2017 - 2021 Intel Corporation.
+
+  The source code contained or described herein and all documents related to the
+  source code ("Material") are owned by Intel Corporation or its suppliers or
+  licensors. Title to the Material remains with Intel Corporation or its suppliers
+  and licensors. The Material may contain trade secrets and proprietary and
+  confidential information of Intel Corporation and its suppliers and licensors,
+  and is protected by worldwide copyright and trade secret laws and treaty
+  provisions. No part of the Material may be used, copied, reproduced, modified,
+  published, uploaded, posted, transmitted, distributed, or disclosed in any way
+  without Intel's prior express written permission.
+
+  No license under any patent, copyright, trade secret or other intellectual
+  property right is granted to or conferred upon you by disclosure or delivery
+  of the Materials, either expressly, by implication, inducement, estoppel or
+  otherwise. Any license under such intellectual property rights must be
+  express and approved by Intel in writing.
+
+  Unless otherwise agreed by Intel in writing, you may not remove or alter
+  this notice or any other notice embedded in Materials by Intel or
+  Intel's suppliers or licensors in any way.
+
+  This file contains an 'Intel Peripheral Driver' and is uniquely identified as
+  "Intel Reference Module" and is licensed for Intel CPUs and chipsets under
+  the terms of your license agreement with Intel or your vendor. This file may
+  be modified by the user, subject to additional terms of the license agreement.
+
+@par Specification Reference:
+**/
+#ifndef _USB_CONFIG_H_
+#define _USB_CONFIG_H_
+
+#define USB_CONFIG_REVISION 3
+extern EFI_GUID gUsbConfigGuid;
+
+#define MAX_USB2_PORTS  16
+#define MAX_USB3_PORTS  10
+
+#pragma pack (push,1)
+
+typedef UINT8                   USB_OVERCURRENT_PIN;
+#define USB_OC_SKIP             0xFF
+#define USB_OC_MAX_PINS         16       ///< Total OC pins number (both physical and virtual)
+
+/**
+  This structure configures per USB2.0 port settings like enabling and overcurrent protection
+**/
+typedef struct {
+  /**
+    These members describe the specific over current pin number of USB 2.0 Port N.
+    It is SW's responsibility to ensure that a given port's bit map is set only for
+    one OC pin Description. USB2 and USB3 on the same combo Port must use the same OC pin.
+  **/
+  UINT32     OverCurrentPin          :  8;
+  UINT32     Enable                  :  1;     ///< 0: Disable; <b>1: Enable</b>.
+  UINT32     PortResetMessageEnable  :  1;     ///< 0: Disable USB2 Port Reset Message; 1: Enable USB2 Port Reset Message
+  UINT32     RsvdBits0               : 22;     ///< Reserved bits
+} USB2_PORT_CONFIG;
+
+/**
+  This structure configures per USB3.x port settings like enabling and overcurrent protection
+**/
+typedef struct {
+  /**
+    These members describe the specific over current pin number of USB 3.x Port N.
+    It is SW's responsibility to ensure that a given port's bit map is set only for
+    one OC pin Description. USB2 and USB3 on the same combo Port must use the same OC pin.
+  **/
+  UINT32  OverCurrentPin               :  8;
+  UINT32  Enable                       :  1; ///< 0: Disable; <b>1: Enable</b>.
+  UINT32  RsvdBits0                    : 23; ///< Reserved bits
+} USB3_PORT_CONFIG;
+
+/**
+  The XDCI_CONFIG block describes the configurations
+  of the xDCI Usb Device controller.
+**/
+typedef struct {
+  /**
+    This member describes whether or not the xDCI controller should be enabled.
+    0: Disable; <b>1: Enable</b>.
+  **/
+  UINT32  Enable              :  1;
+  UINT32  RsvdBits0           : 31;     ///< Reserved bits
+} XDCI_CONFIG;
+
+//
+// PCH:RestrictedBegin
+//
+//
+// USB EP Type Lock Policy
+//
+typedef struct {
+  UINT32  TestEPTypeLockPolicy;
+  UINT32  TestEPTypeLockPolicyPortControl1; // NO USE
+  UINT32  TestEPTypeLockPolicyPortControl2; // NO USE
+} PCH_USB30_EP_TYPE_LOCK_POLICY_SETTINGS;
+//
+// PCH:RestrictedEnd
+//
+
+/**
+  This member describes the expected configuration of the USB controller,
+  Platform modules may need to refer Setup options, schematic, BIOS specification to update this field.
+  The Usb20OverCurrentPins and Usb30OverCurrentPins field must be updated by referring the schematic.
+
+  <b>Revision 1</b>:
+  - Initial version.
+  <b>Revision 2</b>:
+  - Added UaolEnable to control USB Audio Offload Capability.
+  <b>Revision 3</b>:
+  - Add HsiiEnable enable option to control HSII feature
+**/
+typedef struct {
+  CONFIG_BLOCK_HEADER     Header;                   ///< Config Block Header
+  /**
+    This policy option when set will make BIOS program Port Disable Override register during PEI phase.
+    When disabled BIOS will not program the PDO during PEI phase and leave PDO register unlocked for later programming.
+    If this is disabled, platform code MUST set it before booting into OS.
+    <b>1: Enable</b>
+    0: Disable
+  **/
+  UINT32                  PdoProgramming               :  1;
+  /**
+    This option allows for control whether USB should program the Overcurrent Pins mapping into xHCI.
+    Disabling this feature will disable overcurrent detection functionality.
+    Overcurrent Pin mapping data is contained in respective port structures (i.e. USB30_PORT_CONFIG) in OverCurrentPin field.
+    By default this Overcurrent functionality should be enabled and disabled only for OBS debug usage.
+    <b>1: Will program USB OC pin mapping in respective xHCI controller registers</b>
+    0: Will clear OC pin mapping allow for OBS usage of OC pins
+  **/
+  UINT32                  OverCurrentEnable            :  1;
+  /**
+    <b>(Test)</b>
+    If this policy option is enabled then BIOS will program OCCFDONE bit in xHCI meaning that OC mapping data will be
+    consumed by xHCI and OC mapping registers will be locked. OverCurrent mapping data is taken from respective port data
+    structure from OverCurrentPin field.
+    If EnableOverCurrent policy is enabled this also should be enabled, otherwise xHCI won't consume OC mapping data.
+    <b>1: Program OCCFDONE bit and make xHCI consume OverCurrent mapping data</b>
+    0: Do not program OCCFDONE bit making it possible to use OBS debug on OC pins.
+  **/
+  UINT32                  XhciOcLock                   :  1;
+  /**
+    Enabling this feature will allow for overriding LTR values for xHCI controller.
+    Values used for programming will be taken from this config block and BIOS will disregard recommended ones.
+    <b>0: disable - do not override recommended LTR values</b>
+    1: enable - override recommended LTR values
+  **/
+  UINT32                  LtrOverrideEnable            :  1;
+  /**
+    Enable/disable option for USB Audio Offload feture. Disabling this will disable UAOL capability
+    in xHCI and UAOL ACPI definitions will be hidden.
+    0: disable UAOL
+    <b>1: enable UAOL</b>
+  **/
+  UINT32                  UaolEnable                   :  1;
+  /**
+    Enable HS Interrupt IN Alarm
+    0: disable - Disable HSII
+    <b>1: enable - Enable HSII</b>
+  **/
+  UINT32                  HsiiEnable                   :  1;
+  UINT32                  RsvdBits0                    : 26;     ///< Reserved bits
+  /**
+    High Idle Time Control override value
+    This setting is used only if LtrOverrideEnable is enabled
+  **/
+  UINT32                  LtrHighIdleTimeOverride;
+  /**
+    Medium Idle Time Control override value
+    This setting is used only if LtrOverrideEnable is enabled
+  **/
+  UINT32                  LtrMediumIdleTimeOverride;
+  /**
+    Low Idle Time Control override value
+    This setting is used only if LtrOverrideEnable is enabled
+  **/
+  UINT32                  LtrLowIdleTimeOverride;
+  /**
+    These members describe whether the USB2 Port N of PCH is enabled by platform modules.
+  **/
+  USB2_PORT_CONFIG        PortUsb20[MAX_USB2_PORTS];
+  /**
+    These members describe whether the USB3 Port N of PCH is enabled by platform modules.
+  **/
+  USB3_PORT_CONFIG        PortUsb30[MAX_USB3_PORTS];
+  /**
+    This member describes whether or not the xDCI controller should be enabled.
+  **/
+  XDCI_CONFIG             XdciConfig;
+
+//
+// PCH:RestrictedBegin
+//
+  PCH_USB30_EP_TYPE_LOCK_POLICY_SETTINGS  Usb30EpTypeLockPolicySettings;
+  UINT32  XhciSafeMode             : 1;
+  UINT32  XdciSafeMode             : 1;
+  UINT32  TestControllerEnabled    : 1;      ///< 0: Disable; 1: Enable. Remark: Can be disabled only for debugging process!!!
+  UINT32  TestUnlockUsbForSvNoa    : 1;      ///< 1: Unlock to enable NOA usage. 0: Set  Xhci OC registers, Set Xhci OCCDone bit, XHCI Access Control Bit. Policy for SV usage. NO USE.
+  UINT32  TestClkGatingXhci        : 1;      ///< 1: Enable XHCI Clock Gating. 0: Disable XHCI Clock Gating. Policy for SV usage. NO USE.
+  /**
+  Ater xHCI is initialized, BIOS should lock the xHCI configuration registers to RO.
+  This prevents any unintended changes. BIOS should set these bits to lock down the settings prior to end of POST
+  0: POR is XHCI Access Control Bit is set and locks the registers;
+  1: Enable XHCI Access Control Bit is set and locks the registers;
+  2: Clear/Disable XHCI Access Control Bit is cleared and the registers are unlocked.
+  **/
+  UINT32  TestXhciAccessControlLock  : 2;
+  UINT32  RsvdBits1                  : 25;     ///< Reserved bits
+//
+// PCH:RestrictedEnd
+//
+} USB_CONFIG;
+
+#pragma pack (pop)
+
+#endif // _USB_CONFIG_H_
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h b/Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h
new file mode 100644
index 00000000..6e7f48fe
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h
@@ -0,0 +1,44 @@
+/** @file
+  SPI library header for abstraction of SPI HW registers accesses
+
+  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#ifndef _SPI_ACCESS_LIB_H_
+#define _SPI_ACCESS_LIB_H_
+
+
+/**
+  Returns SPI BAR0 value
+
+  @retval  UINT32  PCH SPI BAR0 value
+**/
+UINT32
+SpiGetBar0 (
+  VOID
+  );
+
+/**
+  Checks if PCH SPI Controler is present and available
+
+  @retval TRUE    PCH SPI controller is avaialable
+  @retval FALSE   PCH SPI controller is not available
+**/
+BOOLEAN
+SpiIsControllerAvailable (
+  VOID
+  );
+
+/**
+  Checks if Device Attached Flash (DAF) mode is active
+
+  @retval TRUE    SAF mode is active
+  @retval FALSE   SAF mode is not active
+**/
+BOOLEAN
+SpiIsSafModeActive (
+  VOID
+  );
+
+#endif // _SPI_ACCESS_LIB_H_
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h b/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h
new file mode 100644
index 00000000..64569ed8
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h
@@ -0,0 +1,27 @@
+/** @file
+  Register definitions for PTT HCI (Platform Trust Technology - Host Controller Interface).
+
+  Conventions:
+
+  - Prefixes:
+    Definitions beginning with "R_" are registers
+    Definitions beginning with "B_" are bits within registers
+    Definitions beginning with "V_" are meaningful values of bits within the registers
+    Definitions beginning with "S_" are register sizes
+    Definitions beginning with "N_" are the bit position
+
+  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#ifndef _PTT_HCI_REGS_H_
+#define _PTT_HCI_REGS_H_
+
+///
+/// LT public space registers
+///
+#define R_LT_UCS                           0xFED30880
+#define R_LT_EXISTS                        0xFED30010
+
+
+#endif
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h
index e13718c9..dc663198 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h
@@ -7,7 +7,7 @@
 #ifndef _SPI_COMMON_LIB_H_
 #define _SPI_COMMON_LIB_H_
 
-#include <Protocol/Spi.h>
+#include <Protocol/Spi2.h>
 
 //
 // Maximum time allowed while waiting the SPI cycle to complete
@@ -49,7 +49,7 @@ typedef enum {
 typedef struct {
   UINT32                Signature;
   EFI_HANDLE            Handle;
-  PCH_SPI_PROTOCOL      SpiProtocol;
+  PCH_SPI2_PROTOCOL     SpiProtocol;
   UINT16                PchAcpiBase;
   UINT64                PchSpiBase;
   UINT8                 ReadPermission;
@@ -157,8 +157,8 @@ IsSpiControllerSaveRestoreEnabled (
 /**
   Read data from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
   @param[out] Buffer              The Pointer to caller-allocated buffer containing the dada received.
@@ -171,8 +171,8 @@ IsSpiControllerSaveRestoreEnabled (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashRead (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
   OUT    UINT8              *Buffer
@@ -181,8 +181,8 @@ SpiProtocolFlashRead (
 /**
   Write data to the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
   @param[in] Buffer               Pointer to caller-allocated buffer containing the data sent during the SPI cycle.
@@ -194,8 +194,8 @@ SpiProtocolFlashRead (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashWrite (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
   IN     UINT8              *Buffer
@@ -204,8 +204,8 @@ SpiProtocolFlashWrite (
 /**
   Erase some area on the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
 
@@ -216,8 +216,8 @@ SpiProtocolFlashWrite (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashErase (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount
   );
@@ -225,7 +225,7 @@ SpiProtocolFlashErase (
 /**
   Read SFDP data from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ComponentNumber      The Componen Number for chip select
   @param[in] Address              The starting byte address for SFDP data read.
   @param[in] ByteCount            Number of bytes in SFDP data portion of the SPI cycle
@@ -239,7 +239,7 @@ SpiProtocolFlashErase (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadSfdp (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT8              ComponentNumber,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
@@ -249,7 +249,7 @@ SpiProtocolFlashReadSfdp (
 /**
   Read Jedec Id from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ComponentNumber      The Componen Number for chip select
   @param[in] ByteCount            Number of bytes in JedecId data portion of the SPI cycle, the data size is 3 typically
   @param[out] JedecId             The Pointer to caller-allocated buffer containing JEDEC ID received
@@ -262,7 +262,7 @@ SpiProtocolFlashReadSfdp (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadJedecId (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT8              ComponentNumber,
   IN     UINT32             ByteCount,
   OUT    UINT8              *JedecId
@@ -271,7 +271,7 @@ SpiProtocolFlashReadJedecId (
 /**
   Write the status register in the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
   @param[in] StatusValue          The Pointer to caller-allocated buffer containing the value of Status register writing
 
@@ -282,7 +282,7 @@ SpiProtocolFlashReadJedecId (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashWriteStatus (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             ByteCount,
   IN     UINT8              *StatusValue
   );
@@ -290,7 +290,7 @@ SpiProtocolFlashWriteStatus (
 /**
   Read status register in the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
   @param[out] StatusValue         The Pointer to caller-allocated buffer containing the value of Status register received.
 
@@ -301,7 +301,7 @@ SpiProtocolFlashWriteStatus (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadStatus (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             ByteCount,
   OUT    UINT8              *StatusValue
   );
@@ -309,8 +309,8 @@ SpiProtocolFlashReadStatus (
 /**
   Get the SPI region base and size, based on the enum type
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for for the base address which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[out] BaseAddress         The Flash Linear Address for the Region 'n' Base
   @param[out] RegionSize          The size for the Region 'n'
 
@@ -321,8 +321,8 @@ SpiProtocolFlashReadStatus (
 EFI_STATUS
 EFIAPI
 SpiProtocolGetRegionAddress (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   OUT    UINT32             *BaseAddress,
   OUT    UINT32             *RegionSize
   );
@@ -330,7 +330,7 @@ SpiProtocolGetRegionAddress (
 /**
   Read PCH Soft Strap Values
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] SoftStrapAddr        PCH Soft Strap address offset from FPSBA.
   @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle
   @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing PCH Soft Strap Value.
@@ -344,7 +344,7 @@ SpiProtocolGetRegionAddress (
 EFI_STATUS
 EFIAPI
 SpiProtocolReadPchSoftStrap (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             SoftStrapAddr,
   IN     UINT32             ByteCount,
   OUT    VOID               *SoftStrapValue
@@ -353,7 +353,7 @@ SpiProtocolReadPchSoftStrap (
 /**
   Read CPU Soft Strap Values
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] SoftStrapAddr        CPU Soft Strap address offset from FCPUSBA.
   @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle.
   @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing CPU Soft Strap Value.
@@ -367,7 +367,7 @@ SpiProtocolReadPchSoftStrap (
 EFI_STATUS
 EFIAPI
 SpiProtocolReadCpuSoftStrap (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             SoftStrapAddr,
   IN     UINT32             ByteCount,
   OUT    VOID               *SoftStrapValue
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h
index 5cb47911..7e4414f8 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h
@@ -62,6 +62,8 @@
 //
 // BIOS Flash Program Registers (based on SPI_BAR0)
 //
+#define R_SPI_MEM_BFPR                      0x00                          ///< BIOS Flash Primary Region Register(32bits), which is RO and contains the same value from FREG1
+#define B_SPI_MEM_BFPR_SBRS                 BIT31                         ///< Shadowed BIOS Region Select
 #define R_SPI_MEM_HSFSC                     0x04                          ///< Hardware Sequencing Flash Status and Control Register(32bits)
 #define B_SPI_MEM_HSFSC_FDBC_MASK           0x3F000000                    ///< Flash Data Byte Count ( <= 64), Count = (Value in this field) + 1.
 #define N_SPI_MEM_HSFSC_FDBC                24
@@ -78,12 +80,8 @@
 #define B_SPI_MEM_HSFSC_CYCLE_FGO           BIT16                         ///< Flash Cycle Go.
 #define B_SPI_MEM_HSFSC_FDV                 BIT14                         ///< Flash Descriptor Valid, once valid software can use hareware sequencing regs
 #define B_SPI_MEM_HSFSC_WRSDIS              BIT11                         ///< Write Status Disable
-#define B_SPI_MEM_HSFSC_SAF_CE              BIT8                          ///< SAF ctype error
-#define B_SPI_MEM_HSFSC_SAF_LE              BIT6                          ///< SAF link error
+#define B_SPI_MEM_HSFSC_SAF_MODE_ACTIVE     BIT7                          ///< Indicates flash is attached either directly to the PCH via the SPI bus or EC/BMC
 #define B_SPI_MEM_HSFSC_SCIP                BIT5                          ///< SPI cycle in progress
-#define B_SPI_MEM_HSFSC_SAF_DLE             BIT4                          ///< SAF Data length error
-#define B_SPI_MEM_HSFSC_SAF_ERROR           BIT3                          ///< SAF Error
-#define B_SPI_MEM_HSFSC_AEL                 BIT2                          ///< Access Error Log
 #define B_SPI_MEM_HSFSC_FCERR               BIT1                          ///< Flash Cycle Error
 #define B_SPI_MEM_HSFSC_FDONE               BIT0                          ///< Flash Cycle Done
 #define R_SPI_MEM_FADDR                     0x08                          ///< SPI Flash Address
@@ -113,4 +111,5 @@
 #define B_SPI_MEM_SFDPX_VSCCX_EO_64K        BIT29                         ///< 64k Erase valid (EO_64k_valid)
 #define R_SPI_MEM_SFDP1_VSCC1               0xC8                          ///< Vendor Specific Component Capabilities Register(32 bits)
 
+
 #endif
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
new file mode 100644
index 00000000..444c6b34
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
@@ -0,0 +1,33 @@
+## @file
+# Component description file for PCH SPI access library
+#
+#  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+
+[Defines]
+INF_VERSION     = 0x00010017
+BASE_NAME       = PeiDxeSmmSpiAccessLib
+FILE_GUID       = A6D4C05A-F6CB-46D5-4BA1-8C47B139DCA6
+VERSION_STRING  = 1.0
+MODULE_TYPE     = BASE
+LIBRARY_CLASS   = SpiAccessLib
+
+
+[LibraryClasses]
+BaseLib
+IoLib
+DebugLib
+PciSegmentLib
+PchPciBdfLib
+PchPcrLib
+
+[Packages]
+MdePkg/MdePkg.dec
+AlderlakeSiliconPkg/SiPkg.dec
+
+
+[Sources]
+SpiAccessLib.c
\ No newline at end of file
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c
new file mode 100644
index 00000000..da8475ea
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c
@@ -0,0 +1,75 @@
+/** @file
+  SPI library for abstraction of SPI HW registers accesses
+
+  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Base.h>
+#include <Uefi/UefiBaseType.h>
+#include <IndustryStandard/Pci22.h>
+#include <Library/BaseLib.h>
+#include <Library/IoLib.h>
+#include <Library/DebugLib.h>
+#include <Library/PciSegmentLib.h>
+#include <Library/SpiAccessLib.h>
+#include <Library/PchPciBdfLib.h>
+#include <Register/SpiRegs.h>
+#include <Register/FlashRegs.h>
+#include <Register/PchRegs.h>
+#include <Register/PchDmiRegs.h>
+
+
+/**
+  Checks if PCH SPI Controler is present and available
+
+  @retval TRUE    PCH SPI controller is avaialable
+  @retval FALSE   PCH SPI controller is not available
+**/
+BOOLEAN
+SpiIsControllerAvailable (
+  VOID
+  )
+{
+  //
+  // Checks for SPI controller
+  //
+  return (PciSegmentRead16 (SpiPciCfgBase () + PCI_VENDOR_ID_OFFSET) != 0xFFFF);
+}
+
+/**
+  Returns PCH SPI BAR0 value
+
+  @retval  UINT32  PCH SPI BAR0 value
+**/
+UINT32
+SpiGetBar0 (
+  VOID
+  )
+{
+  UINT32  SpiBar0;
+
+  ASSERT (SpiIsControllerAvailable ());
+  SpiBar0 = PciSegmentRead32 (SpiPciCfgBase () + R_SPI_CFG_BAR0) & ~B_SPI_CFG_BAR0_MASK;
+  ASSERT (SpiBar0 != 0);
+
+  return SpiBar0;
+}
+
+/**
+  Checks if device Attached Flash (DAF) mode is active
+
+  @retval TRUE    SAF mode is active
+  @retval FALSE   SAF mode is not active
+**/
+BOOLEAN
+SpiIsSafModeActive (
+  VOID
+  )
+{
+  UINT32 SpiBar0;
+  SpiBar0 = SpiGetBar0 ();
+
+  return !!(MmioRead32 (SpiBar0 + R_SPI_MEM_HSFSC) & B_SPI_MEM_HSFSC_SAF_MODE_ACTIVE);
+}
\ No newline at end of file
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c
index aaf4e179..68031b4a 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c
@@ -9,7 +9,7 @@
 #include <Library/MemoryAllocationLib.h>
 #include <Library/PeiServicesLib.h>
 #include <Library/PciSegmentLib.h>
-#include <Ppi/Spi.h>
+#include <Ppi/Spi2.h>
 #include <Library/SpiCommonLib.h>
 #include <PchReservedResources.h>
 #include <IndustryStandard/Pci30.h>
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
index c3bf6d02..e720eed2 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
@@ -30,7 +30,7 @@ PchPciBdfLib
 [Packages]
 MdePkg/MdePkg.dec
 AlderlakeSiliconPkg/SiPkg.dec
-
+IntelSiliconPkg/IntelSiliconPkg.dec
 
 [Sources]
 PchSpi.c
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
index 25ab9194..b38e149d 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
@@ -19,11 +19,28 @@
 [Packages]
   MdePkg/MdePkg.dec
   AlderlakeSiliconPkg/SiPkg.dec
+  IntelSiliconPkg/IntelSiliconPkg.dec
 
 [LibraryClasses]
   IoLib
   DebugLib
   PmcLib
   PchPciBdfLib
+  SpiAccessLib
 
-[Pcd]
+[Guids]
+  gFlashRegionDescriptorGuid
+  gFlashRegionBiosGuid
+  gFlashRegionMeGuid
+  gFlashRegionGbeGuid
+  gFlashRegionPlatformDataGuid
+  gFlashRegionDerGuid
+  gFlashRegionSecondaryBiosGuid
+  gFlashRegionMicrocodePatchGuid
+  gFlashRegionEcGuid
+  gFlashRegionDeviceExpansionGuid
+  gFlashRegionIeGuid
+  gFlashRegion10GbeAGuid
+  gFlashRegion10GbeBGuid
+  gFlashRegionAllGuid
+  gFlashRegionMaxGuid
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c
index ab51521f..0890d498 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c
@@ -12,17 +12,137 @@
 #include <IndustryStandard/Pci30.h>
 #include <Library/PmcLib.h>
 #include <Library/PciSegmentLib.h>
-#include <Protocol/Spi.h>
+#include <Protocol/Spi2.h>
 #include <Library/SpiCommonLib.h>
 #include <Register/PchRegs.h>
 #include <Register/SpiRegs.h>
 #include <Register/FlashRegs.h>
 #include <Register/PmcRegs.h>
 #include <Library/PchPciBdfLib.h>
+#include <Library/SpiAccessLib.h>
 
 #define DEFAULT_CPU_STRAP_BASE_OFFSET 0x300 // Default CPU Straps base offset
 #define B_SPI_MEM_HSFSC_SAVE_MASK     (B_SPI_MEM_HSFSC_FDBC_MASK | B_SPI_MEM_HSFSC_CYCLE_MASK)
 
+typedef enum {
+  FlashRegionDescriptor,
+  FlashRegionBios,
+  FlashRegionMe,
+  FlashRegionGbe,
+  FlashRegionPlatformData,
+  FlashRegionDer,
+  FlashRegionSecondaryBios,
+  FlashRegionMicrocodePatch,
+  FlashRegionEc,
+  FlashRegionDeviceExpansion,
+  FlashRegionIe,
+  FlashRegion10GbeA,
+  FlashRegion10GbeB,
+  FlashRegionAll = 16,
+  FlashRegionMax
+} FLASH_REGION_TYPE;
+
+typedef struct {
+  EFI_GUID            *Guid;
+  FLASH_REGION_TYPE   Type;
+} FLASH_REGION_MAPPING;
+
+FLASH_REGION_MAPPING mFlashRegionTypes[] = {
+  {
+    &gFlashRegionDescriptorGuid,
+    FlashRegionDescriptor
+  },
+  {
+    &gFlashRegionBiosGuid,
+    FlashRegionBios
+  },
+  {
+    &gFlashRegionMeGuid,
+    FlashRegionMe
+  },
+  {
+    &gFlashRegionGbeGuid,
+    FlashRegionGbe
+  },
+  {
+    &gFlashRegionPlatformDataGuid,
+    FlashRegionPlatformData
+  },
+  {
+    &gFlashRegionDerGuid,
+    FlashRegionDer
+  },
+  {
+    &gFlashRegionSecondaryBiosGuid,
+    FlashRegionSecondaryBios
+  },
+  {
+    &gFlashRegionMicrocodePatchGuid,
+    FlashRegionMicrocodePatch
+  },
+  {
+    &gFlashRegionEcGuid,
+    FlashRegionEc
+  },
+  {
+    &gFlashRegionDeviceExpansionGuid,
+    FlashRegionDeviceExpansion
+  },
+  {
+    &gFlashRegionIeGuid,
+    FlashRegionIe
+  },
+  {
+    &gFlashRegion10GbeAGuid,
+    FlashRegion10GbeA
+  },
+  {
+    &gFlashRegion10GbeBGuid,
+    FlashRegion10GbeB
+  },
+  {
+    &gFlashRegionAllGuid,
+    FlashRegionAll
+  },
+  {
+    &gFlashRegionMaxGuid,
+    FlashRegionMax
+  }
+};
+
+/**
+  Returns the type of a flash region given its GUID.
+
+  @param[in]    FlashRegionGuid   Pointer to the flash region GUID.
+  @param[out]   FlashRegionType   Pointer to a buffer that will be set to the flash region type value.
+
+  @retval       EFI_SUCCESS             The flash region type was found for the given flash region GUID.
+  @retval       EFI_INVALID_PARAMETER   A pointer argument passed to the function is NULL.
+  @retval       EFI_NOT_FOUND           The flash region type was not found for the given flash region GUID.
+
+**/
+EFI_STATUS
+GetFlashRegionType (
+  IN     EFI_GUID           *FlashRegionGuid,
+  OUT    FLASH_REGION_TYPE  *FlashRegionType
+  )
+{
+  UINTN   Index;
+
+  if (FlashRegionGuid == NULL || FlashRegionType == NULL) {
+    return EFI_INVALID_PARAMETER;
+  }
+
+  for (Index = 0; Index < ARRAY_SIZE (mFlashRegionTypes); Index++) {
+    if (CompareGuid (mFlashRegionTypes[Index].Guid, FlashRegionGuid)) {
+      *FlashRegionType = mFlashRegionTypes[Index].Type;
+      return EFI_SUCCESS;
+    }
+  }
+
+  return EFI_NOT_FOUND;
+}
+
 /**
   Initialize an SPI protocol instance.
 
@@ -184,7 +304,7 @@ SpiProtocolConstructor (
   // If CPU Strap base address is different than 0x300 need to add MDTBA value for final location
   //
   if (SpiInstance->CpuStrapBaseAddr != DEFAULT_CPU_STRAP_BASE_OFFSET) {
-    Status = SpiProtocolFlashRead (&(SpiInstance->SpiProtocol), FlashRegionAll, R_FLASH_UMAP1, sizeof (Data32), (UINT8 *) (&Data32));
+    Status = SpiProtocolFlashRead (&(SpiInstance->SpiProtocol), &gFlashRegionAllGuid, R_FLASH_UMAP1, sizeof (Data32), (UINT8 *) (&Data32));
     ASSERT_EFI_ERROR (Status);
     Mdtba = (UINT16)(((Data32 & B_FLASH_UMAP1_MDTBA) >> N_FLASH_UMAP1_MDTBA) << N_FLASH_UMAP1_MDTBA_REPR);
     DEBUG ((DEBUG_INFO, "Mdtba : %0x\n", Mdtba));
@@ -279,7 +399,7 @@ PchPmTimerStallRuntimeSafe (
 STATIC
 BOOLEAN
 WaitForSpiCycleComplete (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINTN              PchSpiBar0,
   IN     BOOLEAN            ErrorCheck
   )
@@ -317,7 +437,7 @@ WaitForSpiCycleComplete (
   This function waits for a pending SPI transaction to complete without clearing
   status fields
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] PchSpiBar0           SPI MMIO address
 
   @retval TRUE                    SPI cycle completed on the interface.
@@ -327,7 +447,7 @@ WaitForSpiCycleComplete (
 BOOLEAN
 STATIC
 WaitForScipNoClear (
-  IN      PCH_SPI_PROTOCOL    *This,
+  IN      PCH_SPI2_PROTOCOL   *This,
   IN      UINTN               PchSpiBar0
   )
 {
@@ -352,87 +472,11 @@ WaitForScipNoClear (
   return FALSE;
 }
 
-/**
-  This function sets the FDONE and optionally FCERR bits in the HSFS_CTL register
-
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] PchSpiBar0           SPI MMIO address
-  @param[in] SetErrorBit          Set to TRUE to set the FCERR bit
-
-**/
-VOID
-STATIC
-SetHsfscFdone (
-  IN      PCH_SPI_PROTOCOL    *This,
-  IN      UINTN               PchSpiBar0,
-  IN      BOOLEAN             SetFcErrorBit
-  )
-{
-  EFI_STATUS    Status;
-  UINT32        HardwareSpiAddr;
-  UINT32        FlashRegionSize;
-  UINT32        Index;
-  UINT8         DataCount;
-
-  Status = SpiProtocolGetRegionAddress (This, FlashRegionBios, &HardwareSpiAddr, &FlashRegionSize);
-  if (EFI_ERROR (Status)) {
-    return;
-  }
-
-  //
-  // Clear FDONE and FCERR
-  //
-  MmioWrite8 (PchSpiBar0 + R_SPI_MEM_HSFSC, B_SPI_MEM_HSFSC_FCERR | B_SPI_MEM_HSFSC_FDONE);
-
-  //
-  // Fill data buffer
-  //
-  if (SetFcErrorBit) {
-    for (Index = 0; Index < 64; Index += sizeof (UINT32)) {
-      MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FDATA00 + Index, 0xFFFFFFFF);
-    }
-  }
-
-  //
-  // Set the Flash Address
-  //
-  MmioWrite32 (
-    (PchSpiBar0 + R_SPI_MEM_FADDR),
-    (UINT32) (HardwareSpiAddr & B_SPI_MEM_FADDR_MASK)
-    );
-  //
-  // Set Data count, Flash cycle, and Set Go bit to start a cycle
-  //
-  if (SetFcErrorBit) {
-    DataCount = 0x3F;
-  } else {
-    DataCount = 0;
-  }
-  MmioAndThenOr32 (
-    PchSpiBar0 + R_SPI_MEM_HSFSC,
-    (UINT32) (~(B_SPI_MEM_HSFSC_FDBC_MASK | B_SPI_MEM_HSFSC_CYCLE_MASK)),
-    (UINT32) (((DataCount << N_SPI_MEM_HSFSC_FDBC) & B_SPI_MEM_HSFSC_FDBC_MASK) |
-              (V_SPI_MEM_HSFSC_CYCLE_READ << N_SPI_MEM_HSFSC_CYCLE)             |
-              B_SPI_MEM_HSFSC_CYCLE_FGO)
-    );
-
-  if (SetFcErrorBit) {
-    //
-    // Intentionally write to FDATA while a cycle is in progress to generate an error
-    //
-    for (Index = 0; Index < 64; Index += sizeof (UINT32)) {
-      MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FDATA00 + Index, 0x0);
-    }
-  }
-
-  WaitForScipNoClear (This, PchSpiBar0);
-}
-
 /**
   This function sends the programmed SPI command to the device.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] SpiRegionType        The SPI Region type for flash cycle which is listed in the Descriptor
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] FlashCycleType       The Flash SPI cycle type list in HSFC (Hardware Sequencing Flash Control Register) register
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
@@ -446,8 +490,8 @@ SetHsfscFdone (
 STATIC
 EFI_STATUS
 SendSpiCmd (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     FLASH_CYCLE_TYPE   FlashCycleType,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
@@ -564,7 +608,7 @@ SendSpiCmd (
     }
   }
 
-  Status = SpiProtocolGetRegionAddress (This, FlashRegionType, &HardwareSpiAddr, &FlashRegionSize);
+  Status = SpiProtocolGetRegionAddress (This, FlashRegionGuid, &HardwareSpiAddr, &FlashRegionSize);
   if (EFI_ERROR (Status)) {
     goto SendSpiCmdEnd;
   }
@@ -751,31 +795,6 @@ SendSpiCmd (
   } while (ByteCount > 0);
 
 SendSpiCmdEnd:
-  //
-  // Restore SPI controller state
-  //
-  if (RestoreState) {
-    if (HsfscFdoneSave) {
-      SetHsfscFdone (This, PchSpiBar0, HsfscFcerrSave);
-    }
-    MmioAndThenOr32 (
-      PchSpiBar0 + R_SPI_MEM_HSFSC,
-      (UINT32)  ~(B_SPI_MEM_HSFSC_SAVE_MASK |
-                  B_SPI_MEM_HSFSC_SAF_CE    |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_SAF_LE    |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_SAF_DLE   |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_SAF_ERROR |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_AEL       |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_FCERR     |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_FDONE),       // This bit clears when set to 1, ensure 0 is written
-      HsfscSave
-      );
-    MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FADDR, FaddrSave);
-    for (Index = 0; Index < 64; Index += sizeof (UINT32)) {
-      MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FDATA00 + Index, FdataSave[Index >> 2]);
-    }
-  }
-
   //
   // Restore the settings for SPI Prefetching and Caching and enable BIOS Write Protect
   //
@@ -801,8 +820,8 @@ SendSpiCmdEnd:
 /**
   Read data from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
   @param[out] Buffer              The Pointer to caller-allocated buffer containing the dada received.
@@ -815,8 +834,8 @@ SendSpiCmdEnd:
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashRead (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
   OUT    UINT8              *Buffer
@@ -829,7 +848,7 @@ SpiProtocolFlashRead (
   //
   Status = SendSpiCmd (
              This,
-             FlashRegionType,
+             FlashRegionGuid,
              FlashCycleRead,
              Address,
              ByteCount,
@@ -841,8 +860,8 @@ SpiProtocolFlashRead (
 /**
   Write data to the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
   @param[in] Buffer               Pointer to caller-allocated buffer containing the data sent during the SPI cycle.
@@ -854,8 +873,8 @@ SpiProtocolFlashRead (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashWrite (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
   IN     UINT8              *Buffer
@@ -868,7 +887,7 @@ SpiProtocolFlashWrite (
   //
   Status = SendSpiCmd (
              This,
-             FlashRegionType,
+             FlashRegionGuid,
              FlashCycleWrite,
              Address,
              ByteCount,
@@ -880,8 +899,8 @@ SpiProtocolFlashWrite (
 /**
   Erase some area on the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
 
@@ -892,8 +911,8 @@ SpiProtocolFlashWrite (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashErase (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount
   )
@@ -905,7 +924,7 @@ SpiProtocolFlashErase (
   //
   Status = SendSpiCmd (
              This,
-             FlashRegionType,
+             FlashRegionGuid,
              FlashCycleErase,
              Address,
              ByteCount,
@@ -917,7 +936,7 @@ SpiProtocolFlashErase (
 /**
   Read SFDP data from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ComponentNumber      The Componen Number for chip select
   @param[in] Address              The starting byte address for SFDP data read.
   @param[in] ByteCount            Number of bytes in SFDP data portion of the SPI cycle
@@ -932,20 +951,53 @@ SpiProtocolFlashErase (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadSfdp (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT8              ComponentNumber,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
   OUT    UINT8              *SfdpData
   )
 {
-  return EFI_SUCCESS;
+  SPI_INSTANCE      *SpiInstance;
+  EFI_STATUS        Status;
+  UINT32            FlashAddress;
+
+  if (SpiIsSafModeActive ()) {
+    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
+    return EFI_UNSUPPORTED;
+  }
+
+  SpiInstance       = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
+  Status            = EFI_SUCCESS;
+
+  if (ComponentNumber > SpiInstance->NumberOfComponents) {
+    ASSERT (FALSE);
+    return EFI_INVALID_PARAMETER;
+  }
+
+  FlashAddress = 0;
+  if (ComponentNumber == FlashComponent1) {
+    FlashAddress = SpiInstance->Component1StartAddr;
+  }
+  FlashAddress += Address;
+  //
+  // Sends the command to the SPI interface to execute.
+  //
+  Status = SendSpiCmd (
+             This,
+             &gFlashRegionAllGuid,
+             FlashCycleReadSfdp,
+             FlashAddress,
+             ByteCount,
+             SfdpData
+             );
+  return Status;
 }
 
 /**
   Read Jedec Id from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ComponentNumber      The Componen Number for chip select
   @param[in] ByteCount            Number of bytes in JedecId data portion of the SPI cycle, the data size is 3 typically
   @param[out] JedecId             The Pointer to caller-allocated buffer containing JEDEC ID received
@@ -959,19 +1011,52 @@ SpiProtocolFlashReadSfdp (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadJedecId (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT8              ComponentNumber,
   IN     UINT32             ByteCount,
   OUT    UINT8              *JedecId
   )
 {
-  return EFI_SUCCESS;
+  SPI_INSTANCE      *SpiInstance;
+  EFI_STATUS        Status;
+  UINT32            Address;
+
+  if (SpiIsSafModeActive ()) {
+    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
+    return EFI_UNSUPPORTED;
+  }
+
+  SpiInstance       = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
+  Status            = EFI_SUCCESS;
+
+  if (ComponentNumber > SpiInstance->NumberOfComponents) {
+    ASSERT (FALSE);
+    return EFI_INVALID_PARAMETER;
+  }
+
+  Address = 0;
+  if (ComponentNumber == FlashComponent1) {
+    Address = SpiInstance->Component1StartAddr;
+  }
+
+  //
+  // Sends the command to the SPI interface to execute.
+  //
+  Status = SendSpiCmd (
+             This,
+             &gFlashRegionAllGuid,
+             FlashCycleReadJedecId,
+             Address,
+             ByteCount,
+             JedecId
+             );
+  return Status;
 }
 
 /**
   Write the status register in the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
   @param[in] StatusValue          The Pointer to caller-allocated buffer containing the value of Status register writing
 
@@ -983,18 +1068,36 @@ SpiProtocolFlashReadJedecId (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashWriteStatus (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             ByteCount,
   IN     UINT8              *StatusValue
   )
 {
-  return EFI_SUCCESS;
+  EFI_STATUS        Status;
+
+  if (SpiIsSafModeActive ()) {
+    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
+    return EFI_UNSUPPORTED;
+  }
+
+  //
+  // Sends the command to the SPI interface to execute.
+  //
+  Status = SendSpiCmd (
+             This,
+             &gFlashRegionAllGuid,
+             FlashCycleWriteStatus,
+             0,
+             ByteCount,
+             StatusValue
+             );
+  return Status;
 }
 
 /**
   Read status register in the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
   @param[out] StatusValue         The Pointer to caller-allocated buffer containing the value of Status register received.
 
@@ -1006,19 +1109,37 @@ SpiProtocolFlashWriteStatus (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadStatus (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             ByteCount,
   OUT    UINT8              *StatusValue
   )
 {
-  return EFI_SUCCESS;
+  EFI_STATUS        Status;
+
+  if (SpiIsSafModeActive ()) {
+    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
+    return EFI_UNSUPPORTED;
+  }
+
+  //
+  // Sends the command to the SPI interface to execute.
+  //
+  Status = SendSpiCmd (
+             This,
+             &gFlashRegionAllGuid,
+             FlashCycleReadStatus,
+             0,
+             ByteCount,
+             StatusValue
+             );
+  return Status;
 }
 
 /**
   Get the SPI region base and size, based on the enum type
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for for the base address which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[out] BaseAddress         The Flash Linear Address for the Region 'n' Base
   @param[out] RegionSize          The size for the Region 'n'
 
@@ -1029,18 +1150,24 @@ SpiProtocolFlashReadStatus (
 EFI_STATUS
 EFIAPI
 SpiProtocolGetRegionAddress (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   OUT    UINT32             *BaseAddress,
   OUT    UINT32             *RegionSize
   )
 {
+  EFI_STATUS          Status;
+  FLASH_REGION_TYPE   FlashRegionType;
   SPI_INSTANCE    *SpiInstance;
   UINTN           PchSpiBar0;
   UINT32          ReadValue;
 
   SpiInstance     = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
 
+  Status = GetFlashRegionType (FlashRegionGuid, &FlashRegionType);
+  if (EFI_ERROR (Status)) {
+    return EFI_INVALID_PARAMETER;
+  }
   if (FlashRegionType >= FlashRegionMax) {
     return EFI_INVALID_PARAMETER;
   }
@@ -1053,10 +1180,13 @@ SpiProtocolGetRegionAddress (
 
   PchSpiBar0      = AcquireSpiBar0 (SpiInstance);
 
-  ReadValue = MmioRead32 (PchSpiBar0 + (R_SPI_MEM_FREG0_FLASHD + (S_SPI_MEM_FREGX * ((UINT32) FlashRegionType))));
+  if (((MmioRead32 (PchSpiBar0 + R_SPI_MEM_BFPR) & B_SPI_MEM_BFPR_SBRS) != 0) &&
+      (FlashRegionType == FlashRegionBios)) {
+    FlashRegionType = FlashRegionSecondaryBios;
+  }
 
   ReleaseSpiBar0 (SpiInstance);
-
+  ReadValue = MmioRead32 (PchSpiBar0 + (R_SPI_MEM_FREG0_FLASHD + (S_SPI_MEM_FREGX * ((UINT32) FlashRegionType))));
   //
   // If the region is not used, the Region Base is 7FFFh and Region Limit is 0000h
   //
@@ -1077,7 +1207,7 @@ SpiProtocolGetRegionAddress (
 /**
   Read PCH Soft Strap Values
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] SoftStrapAddr        PCH Soft Strap address offset from FPSBA.
   @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle
   @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing PCH Soft Strap Value.
@@ -1091,19 +1221,51 @@ SpiProtocolGetRegionAddress (
 EFI_STATUS
 EFIAPI
 SpiProtocolReadPchSoftStrap (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             SoftStrapAddr,
   IN     UINT32             ByteCount,
   OUT    VOID               *SoftStrapValue
   )
 {
-  return EFI_SUCCESS;
+  SPI_INSTANCE      *SpiInstance;
+  UINT32            StrapFlashAddr;
+  EFI_STATUS        Status;
+
+  SpiInstance     = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
+
+  if (ByteCount == 0) {
+    *(UINT16 *) SoftStrapValue = SpiInstance->PchStrapSize;
+    return EFI_SUCCESS;
+  }
+
+  if ((SoftStrapAddr + ByteCount) > (UINT32) SpiInstance->PchStrapSize) {
+    ASSERT (FALSE);
+    return EFI_INVALID_PARAMETER;
+  }
+
+  //
+  // PCH Strap Flash Address = FPSBA + RamAddr
+  //
+  StrapFlashAddr = SpiInstance->PchStrapBaseAddr + SoftStrapAddr;
+
+  //
+  // Read PCH Soft straps from using execute command
+  //
+  Status = SendSpiCmd (
+             This,
+              &gFlashRegionDescriptorGuid,
+             FlashCycleRead,
+             StrapFlashAddr,
+             ByteCount,
+             SoftStrapValue
+             );
+  return Status;
 }
 
 /**
   Read CPU Soft Strap Values
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] SoftStrapAddr        CPU Soft Strap address offset from FCPUSBA.
   @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle.
   @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing CPU Soft Strap Value.
@@ -1117,11 +1279,43 @@ SpiProtocolReadPchSoftStrap (
 EFI_STATUS
 EFIAPI
 SpiProtocolReadCpuSoftStrap (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             SoftStrapAddr,
   IN     UINT32             ByteCount,
   OUT    VOID               *SoftStrapValue
   )
 {
-  return EFI_SUCCESS;
+  SPI_INSTANCE      *SpiInstance;
+  UINT32            StrapFlashAddr;
+  EFI_STATUS        Status;
+
+  SpiInstance     = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
+
+  if (ByteCount == 0) {
+    *(UINT16 *) SoftStrapValue = SpiInstance->CpuStrapSize;
+    return EFI_SUCCESS;
+  }
+
+  if ((SoftStrapAddr + ByteCount) > (UINT32) SpiInstance->CpuStrapSize) {
+    ASSERT (FALSE);
+    return EFI_INVALID_PARAMETER;
+  }
+
+  //
+  // CPU Strap Flash Address = FCPUSBA + RamAddr
+  //
+  StrapFlashAddr = SpiInstance->CpuStrapBaseAddr + SoftStrapAddr;
+
+  //
+  // Read Cpu Soft straps from using execute command
+  //
+  Status = SendSpiCmd (
+             This,
+             &gFlashRegionDescriptorGuid,
+             FlashCycleRead,
+             StrapFlashAddr,
+             ByteCount,
+             SoftStrapValue
+             );
+  return Status;
 }
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c
index 2dd80eba..164f017c 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c
@@ -13,10 +13,11 @@
 #include <Library/BaseMemoryLib.h>
 #include <Library/SmmServicesTableLib.h>
 #include <Library/PciSegmentLib.h>
-#include <Protocol/Spi.h>
+#include <Protocol/Spi2.h>
 #include <Protocol/SmmCpu.h>
 #include <Library/SpiCommonLib.h>
 #include <PchReservedResources.h>
+#include <Library/SmmPchPrivateLib.h>
 #include <Library/PchPciBdfLib.h>
 #include <IndustryStandard/Pci30.h>
 #include <Register/PchRegs.h>
@@ -82,8 +83,8 @@ SpiExitBootServicesCallback (
       - Documented in System Management Mode Core Interface Specification .
 
   - @result
-    The SPI SMM driver produces @link _PCH_SPI_PROTOCOL PCH_SPI_PROTOCOL @endlink with GUID
-    gPchSmmSpiProtocolGuid which is different from SPI RUNTIME driver.
+    The SPI SMM driver produces @link _PCH_SPI2_PROTOCOL PCH_SPI2_PROTOCOL @endlink with GUID
+    gPchSmmSpi2ProtocolGuid which is different from SPI RUNTIME driver.
 
   - <b>Integration Check List</b>\n
     - This driver supports Descriptor Mode only.
@@ -163,11 +164,11 @@ InstallPchSpi (
   }
 
   //
-  // Install the SMM PCH_SPI_PROTOCOL interface
+  // Install the SMM PCH_SPI2_PROTOCOL interface
   //
   Status = gSmst->SmmInstallProtocolInterface (
                     &(mSpiInstance->Handle),
-                    &gPchSmmSpiProtocolGuid,
+                    &gPchSmmSpi2ProtocolGuid,
                     EFI_NATIVE_INTERFACE,
                     &(mSpiInstance->SpiProtocol)
                     );
@@ -303,6 +304,23 @@ DisableBiosWriteProtect (
     B_SPI_CFG_BC_WPD
     );
 
+  ///
+  /// PCH BIOS Spec Section 3.7 BIOS Region SMM Protection Enabling
+  /// If the following steps are implemented:
+  ///  - Set the EISS bit (SPI PCI Offset DCh [5]) = 1b
+  ///  - Follow the 1st recommendation in section 3.6
+  /// the BIOS Region can only be updated by following the steps bellow:
+  ///  - Once all threads enter SMM
+  ///  - Read memory location FED30880h OR with 00000001h, place the result in EAX,
+  ///    and write data to lower 32 bits of MSR 1FEh (sample code available)
+  ///  - Set BIOSWE bit (SPI PCI Offset DCh [0]) = 1b
+  ///  - Modify BIOS Region
+  ///  - Clear BIOSWE bit (SPI PCI Offset DCh [0]) = 0b
+  ///
+  if ((PciSegmentRead8 (SpiBaseAddress + R_SPI_CFG_BC) & B_SPI_CFG_BC_EISS) != 0) {
+    PchSetInSmmSts ();
+  }
+
   return EFI_SUCCESS;
 }
 
@@ -327,6 +345,12 @@ EnableBiosWriteProtect (
     (UINT8) (~B_SPI_CFG_BC_WPD)
     );
 
+  ///
+  /// Check if EISS bit is set
+  ///
+  if (((PciSegmentRead8 (SpiBaseAddress + R_SPI_CFG_BC)) & B_SPI_CFG_BC_EISS) == B_SPI_CFG_BC_EISS) {
+    PchClearInSmmSts ();
+  }
 }
 
 /**
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf
index 78913423..445f4af8 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf
@@ -24,19 +24,20 @@ UefiBootServicesTableLib
 BaseLib
 SmmServicesTableLib
 SpiCommonLib
+SmmPchPrivateLib
 PchPciBdfLib
 
 [Packages]
 MdePkg/MdePkg.dec
 AlderlakeSiliconPkg/SiPkg.dec
-
+IntelSiliconPkg/IntelSiliconPkg.dec
 
 [Sources]
 Spi.c
 
 
 [Protocols]
-gPchSmmSpiProtocolGuid                ## PRODUCES
+gPchSmmSpi2ProtocolGuid                ## PRODUCES
 gEfiSmmCpuProtocolGuid                ## CONSUMES
 gEdkiiSmmExitBootServicesProtocolGuid ## CONSUMES
 
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h b/Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h
new file mode 100644
index 00000000..63857863
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h
@@ -0,0 +1,27 @@
+/** @file
+  Header file for private PCH SMM Lib.
+
+  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#ifndef _SMM_PCH_PRIVATE_LIB_H_
+#define _SMM_PCH_PRIVATE_LIB_H_
+
+/**
+  Set InSmm.Sts bit
+**/
+VOID
+PchSetInSmmSts (
+  VOID
+  );
+
+/**
+  Clear InSmm.Sts bit
+**/
+VOID
+PchClearInSmmSts (
+  VOID
+  );
+
+#endif // _SMM_PCH_PRIVATE_LIB_H_
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c
new file mode 100644
index 00000000..bdb2283d
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c
@@ -0,0 +1,83 @@
+/** @file
+  PCH SMM private lib.
+
+  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Uefi/UefiBaseType.h>
+#include <Library/BaseLib.h>
+#include <Library/IoLib.h>
+#include <Library/DebugLib.h>
+#include <Library/CpuPlatformLib.h>
+#include <CpuRegs.h>
+#include <Register/CommonMsr.h>
+#include <Register/PttPtpRegs.h>
+
+
+/**
+  Set InSmm.Sts bit
+**/
+VOID
+PchSetInSmmSts (
+  VOID
+  )
+{
+  UINT32      Data32;
+
+  ///
+  /// If platform disables TXT_PTLEN strap, NL socket(s) will target abort
+  /// when trying to access LT register space below, and writes to
+  /// NL's MSR 0x1FE will GP fault. Check straps enabled first.
+  ///
+
+  Data32 = MmioRead32 (R_LT_EXISTS);
+
+  if (Data32 == 0xFFFFFFFF) {
+    return;
+  }
+  ///
+  /// Read memory location FED30880h OR with 00000001h, place the result in EAX,
+  /// and write data to lower 32 bits of MSR 1FEh (sample code available)
+  ///
+  Data32 = MmioRead32 (R_LT_UCS);
+  AsmWriteMsr32 (MSR_SPCL_CHIPSET_USAGE, Data32 | BIT0);
+  ///
+  /// Read FED30880h back to ensure the setting went through.
+  ///
+  Data32 = MmioRead32 (R_LT_UCS);
+}
+
+/**
+  Clear InSmm.Sts bit
+**/
+VOID
+PchClearInSmmSts (
+  VOID
+  )
+{
+  UINT32      Data32;
+
+  ///
+  /// If platform disables TXT_PTLEN strap, NL socket(s) will target abort
+  /// when trying to access LT register space below, and writes to
+  /// NL's MSR 0x1FE will GP fault. Check straps enabled first.
+  ///
+
+  Data32 = MmioRead32 (R_LT_EXISTS);
+  if (Data32 == 0xFFFFFFFF) {
+    return;
+  }
+
+  ///
+  /// Read memory location FED30880h AND with FFFFFFFEh, place the result in EAX,
+  /// and write data to lower 32 bits of MSR 1FEh (sample code available)
+  ///
+  Data32 = MmioRead32 (R_LT_UCS);
+  AsmWriteMsr32 (MSR_SPCL_CHIPSET_USAGE, Data32 & (UINT32) (~BIT0));
+  ///
+  /// Read FED30880h back to ensure the setting went through.
+  ///
+  Data32 = MmioRead32 (R_LT_UCS);
+}
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf
new file mode 100644
index 00000000..3c62b9b8
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf
@@ -0,0 +1,32 @@
+## @file
+#  PCH SMM private lib.
+#
+#  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+
+[Defines]
+INF_VERSION = 0x00010017
+BASE_NAME = SmmPchPrivateLib
+FILE_GUID = FE6495FB-7AA9-4A24-BF3E-4698F7BCE0EE
+VERSION_STRING = 1.0
+MODULE_TYPE = DXE_SMM_DRIVER
+LIBRARY_CLASS = SmmPchPrivateLib
+
+
+[LibraryClasses]
+BaseLib
+IoLib
+DebugLib
+CpuPlatformLib
+
+
+[Packages]
+MdePkg/MdePkg.dec
+AlderlakeSiliconPkg/SiPkg.dec
+
+
+[Sources]
+SmmPchPrivateLib.c
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc b/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc
index 37876cbf..238473c2 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc
@@ -11,6 +11,11 @@
 !include $(PLATFORM_SI_PACKAGE)/Fru/AdlCpu/DxeLib.dsc
 !include $(PLATFORM_SI_PACKAGE)/Fru/AdlPch/DxeLib.dsc
 
+#
+# Pch
+#
+ SmmPchPrivateLib|$(PLATFORM_SI_PACKAGE)/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf
+
 #
 # Common
 #
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec b/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec
index ce9cfe59..4871a014 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec
+++ b/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec
@@ -33,6 +33,7 @@ IpBlock/HostBridge/IncludePrivate
 
 # Cpu
 Cpu/IncludePrivate
+Pch/IncludePrivate
 
 IncludePrivate
 
@@ -93,6 +94,8 @@ Include/ConfigBlock/Wdt
 Include/ConfigBlock/PcieRp/PchPcieRp
 Include/ConfigBlock/PcieRp
 Include/ConfigBlock/SerialIo
+Include/ConfigBlock/Usb
+
 
 [Guids.common.Private]
 #
@@ -193,6 +196,7 @@ gPcieRpPreMemConfigGuid  =  {0x8377AB38, 0xF8B0, 0x476A, { 0x9C, 0xA1, 0x68, 0xE
 gSmbusPreMemConfigGuid  =  {0x77A6E62C, 0x716B, 0x4386, {0x9E, 0x9C, 0x23, 0xA0, 0x2E, 0x13, 0x7B, 0x3A}}
 gLpcPreMemConfigGuid  =  {0xA6E6032F, 0x1E58, 0x407E, {0x9A, 0xB8, 0xC6, 0x30, 0xC6, 0xC4, 0x11, 0x8E}}
 gPchDmiPreMemConfigGuid  =  {0x4DA4AA22, 0xB54A, 0x43D7, {0x87, 0xC8, 0xA3, 0xCF, 0x53, 0xE6, 0xC1, 0x8A}}
+gUsbConfigGuid  =  {0xB2DA9CCD, 0x6A8C, 0x4BB6, {0xB3, 0xE6, 0xCD, 0xFB, 0xB7, 0x66, 0x8B, 0xDE}}
 
 gPchGeneralConfigGuid  =  {0x6ED94C8C, 0x25F7, 0x4686, {0xB2, 0x46, 0xCA, 0x4D, 0xE2, 0x95, 0x4B, 0x5D}}
 gPchPcieConfigGuid  =  {0x0A53B507, 0x988B, 0x475C, {0xBF, 0x76, 0x33, 0xDE, 0x10, 0x6D, 0x94, 0x84}}
@@ -355,6 +359,7 @@ PchInfoLib|Pch/Include/Library/PchInfoLib.h
 PchPcieRpLib|Include/Library/PchPcieRpLib.h
 PchPcrLib|Include/Library/PchPcrLib.h
 PchSbiAccessLib|IpBlock/P2sb/IncludePrivate/Library/PchSbiAccessLib.h
+SmmPchPrivateLib|Pch/IncludePrivate/Library/SmmPchPrivateLib.h
 PchPciBdfLib|Pch/Include/Library/PchPciBdfLib.h
 PchRasLib|Pch/Include/Library/PchRasLib.h
 PchRtcLib|Pch/Include/Library/PchRtcLib.h
@@ -394,7 +399,7 @@ OcPlatformLib|Include/Library/OcPlatformLib.h
 PeiSpsPreMemPolicyLib|Include/Library/PeiSpsPreMemPolicyLib.h
 PmcLib|Include/Library/PmcLib.h
 PmcSsramLib|Include/Library/PmcSsramLib.h
-SpiLib|Include/Library/SpiLib.h
+SpiAccessLib|Include/Library/SpiAccessLib.h
 SpsDxeLib|Include/Library/SpsDxeLib.h
 SpsGetDxeConfigBlockLib|Include/Library/SpsGetDxeConfigBlock.h
 MeGetPeiConfigBlock|Include/Library/MeGetConfigBlock.h
-- 
2.26.2.windows.1



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^ permalink raw reply related	[flat|nested] 6+ messages in thread

* [edk2-devel] [PATCH] AlderlakeSiliconPkg: Update for SPI2 Protocol and Identify flash regions by GUID
@ 2024-02-02  9:10 dorax.hsueh
  0 siblings, 0 replies; 6+ messages in thread
From: dorax.hsueh @ 2024-02-02  9:10 UTC (permalink / raw)
  To: devel
  Cc: DoraX Hsueh, Sai Chaganty, Rosen Chuang, Saloni Kasbekar,
	Haoyu Tang, Nate DeSimone

From: DoraX Hsueh <dorax.hsueh@intel.com>

https://bugzilla.tianocore.org/show_bug.cgi?id=4664

1. Updates references to the "PCH_SPI_PROTOCOL" to instead refer to "PCH_SPI2_PROTOCOL".
2. Updates the library to identify flash regions by GUID and internally
map the GUID entries to values specific to AlderlakeSiliconPkg.
3. Libs/modules that need to reference IntelSiliconPkg are updated.
4. Add gUsbConfigGuid to fix USB not working issue in OS.

Cc: Sai Chaganty <rangasai.v.chaganty@intel.com>
Cc: Rosen Chuang <rosen.chuang@intel.com>
Cc: Saloni Kasbekar <saloni.kasbekar@intel.com>
Cc: Haoyu Tang <haoyu.tang@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Signed-off-by: DoraX Hsueh <dorax.hsueh@intel.com>
---
 .../Cpu/Include/Register/CommonMsr.h          |   4 +
 .../Fru/AdlPch/CommonLib.dsc                  |   2 +-
 .../AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc |   2 -
 .../Include/ConfigBlock/Usb/UsbConfig.h       | 223 ++++++++
 .../Include/Library/SpiAccessLib.h            |  44 ++
 .../Include/Register/PttPtpRegs.h             |  27 +
 .../Spi/IncludePrivate/Library/SpiCommonLib.h |  60 +--
 .../Spi/IncludePrivate/Register/SpiRegs.h     |   9 +-
 .../PeiDxeSmmSpiAccessLib.inf                 |  33 ++
 .../PeiDxeSmmSpiAccessLib/SpiAccessLib.c      |  75 +++
 .../IpBlock/Spi/Library/PeiSpiLib/PchSpi.c    |   2 +-
 .../Spi/Library/PeiSpiLib/PeiSpiLib.inf       |   2 +-
 .../BaseSpiCommonLib/BaseSpiCommonLib.inf     |  19 +-
 .../BaseSpiCommonLib/SpiCommon.c              | 494 ++++++++++++------
 .../AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c |  34 +-
 .../IpBlock/Spi/Smm/SpiSmm.inf                |   5 +-
 .../IncludePrivate/Library/SmmPchPrivateLib.h |  27 +
 .../SmmPchPrivateLib/SmmPchPrivateLib.c       |  83 +++
 .../SmmPchPrivateLib/SmmPchPrivateLib.inf     |  32 ++
 .../Product/Alderlake/SiPkgDxeLib.dsc         |   5 +
 Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec   |   7 +-
 21 files changed, 990 insertions(+), 199 deletions(-)
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Include/ConfigBlock/Usb/UsbConfig.h
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf

diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h b/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h
index caa0e67b..44a476c0 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h
@@ -56,5 +56,9 @@ typedef union {
 
 } MSR_CORE_THREAD_COUNT_REGISTER;
 
+/**
+  Special Chipset Usage MSR
+**/
+#define MSR_SPCL_CHIPSET_USAGE 0x000001FE
 
 #endif /* _COMMONMSR_h */
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc
index 3f508f83..ee5800a9 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc
@@ -11,7 +11,7 @@
 
   EspiLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Espi/Library/PeiDxeSmmEspiLib/PeiDxeSmmEspiLib.inf
 
-
+  SpiAccessLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
   PmcLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Pmc/Library/PeiDxeSmmPmcLib/PeiDxeSmmPmcLib.inf
   PmcPrivateLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Pmc/LibraryPrivate/PeiDxeSmmPmcPrivateLib/PeiDxeSmmPmcPrivateLib.inf
   SpiCommonLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc
index ebe2bbfd..cbaf8e37 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc
@@ -5,8 +5,6 @@
 #   SPDX-License-Identifier: BSD-2-Clause-Patent
 ##
 
-  SpiLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
-
   GpioHelpersLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Gpio/LibraryPrivate/PeiGpioHelpersLib/PeiGpioHelpersLib.inf
 
 
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Include/ConfigBlock/Usb/UsbConfig.h b/Silicon/Intel/AlderlakeSiliconPkg/Include/ConfigBlock/Usb/UsbConfig.h
new file mode 100644
index 00000000..47bc86cd
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Include/ConfigBlock/Usb/UsbConfig.h
@@ -0,0 +1,223 @@
+/** @file
+  Common USB policy shared between PCH and CPU
+  Contains general features settings for xHCI and xDCI
+
+@copyright
+  INTEL CONFIDENTIAL
+  Copyright 2017 - 2021 Intel Corporation.
+
+  The source code contained or described herein and all documents related to the
+  source code ("Material") are owned by Intel Corporation or its suppliers or
+  licensors. Title to the Material remains with Intel Corporation or its suppliers
+  and licensors. The Material may contain trade secrets and proprietary and
+  confidential information of Intel Corporation and its suppliers and licensors,
+  and is protected by worldwide copyright and trade secret laws and treaty
+  provisions. No part of the Material may be used, copied, reproduced, modified,
+  published, uploaded, posted, transmitted, distributed, or disclosed in any way
+  without Intel's prior express written permission.
+
+  No license under any patent, copyright, trade secret or other intellectual
+  property right is granted to or conferred upon you by disclosure or delivery
+  of the Materials, either expressly, by implication, inducement, estoppel or
+  otherwise. Any license under such intellectual property rights must be
+  express and approved by Intel in writing.
+
+  Unless otherwise agreed by Intel in writing, you may not remove or alter
+  this notice or any other notice embedded in Materials by Intel or
+  Intel's suppliers or licensors in any way.
+
+  This file contains an 'Intel Peripheral Driver' and is uniquely identified as
+  "Intel Reference Module" and is licensed for Intel CPUs and chipsets under
+  the terms of your license agreement with Intel or your vendor. This file may
+  be modified by the user, subject to additional terms of the license agreement.
+
+@par Specification Reference:
+**/
+#ifndef _USB_CONFIG_H_
+#define _USB_CONFIG_H_
+
+#define USB_CONFIG_REVISION 3
+extern EFI_GUID gUsbConfigGuid;
+
+#define MAX_USB2_PORTS  16
+#define MAX_USB3_PORTS  10
+
+#pragma pack (push,1)
+
+typedef UINT8                   USB_OVERCURRENT_PIN;
+#define USB_OC_SKIP             0xFF
+#define USB_OC_MAX_PINS         16       ///< Total OC pins number (both physical and virtual)
+
+/**
+  This structure configures per USB2.0 port settings like enabling and overcurrent protection
+**/
+typedef struct {
+  /**
+    These members describe the specific over current pin number of USB 2.0 Port N.
+    It is SW's responsibility to ensure that a given port's bit map is set only for
+    one OC pin Description. USB2 and USB3 on the same combo Port must use the same OC pin.
+  **/
+  UINT32     OverCurrentPin          :  8;
+  UINT32     Enable                  :  1;     ///< 0: Disable; <b>1: Enable</b>.
+  UINT32     PortResetMessageEnable  :  1;     ///< 0: Disable USB2 Port Reset Message; 1: Enable USB2 Port Reset Message
+  UINT32     RsvdBits0               : 22;     ///< Reserved bits
+} USB2_PORT_CONFIG;
+
+/**
+  This structure configures per USB3.x port settings like enabling and overcurrent protection
+**/
+typedef struct {
+  /**
+    These members describe the specific over current pin number of USB 3.x Port N.
+    It is SW's responsibility to ensure that a given port's bit map is set only for
+    one OC pin Description. USB2 and USB3 on the same combo Port must use the same OC pin.
+  **/
+  UINT32  OverCurrentPin               :  8;
+  UINT32  Enable                       :  1; ///< 0: Disable; <b>1: Enable</b>.
+  UINT32  RsvdBits0                    : 23; ///< Reserved bits
+} USB3_PORT_CONFIG;
+
+/**
+  The XDCI_CONFIG block describes the configurations
+  of the xDCI Usb Device controller.
+**/
+typedef struct {
+  /**
+    This member describes whether or not the xDCI controller should be enabled.
+    0: Disable; <b>1: Enable</b>.
+  **/
+  UINT32  Enable              :  1;
+  UINT32  RsvdBits0           : 31;     ///< Reserved bits
+} XDCI_CONFIG;
+
+//
+// PCH:RestrictedBegin
+//
+//
+// USB EP Type Lock Policy
+//
+typedef struct {
+  UINT32  TestEPTypeLockPolicy;
+  UINT32  TestEPTypeLockPolicyPortControl1; // NO USE
+  UINT32  TestEPTypeLockPolicyPortControl2; // NO USE
+} PCH_USB30_EP_TYPE_LOCK_POLICY_SETTINGS;
+//
+// PCH:RestrictedEnd
+//
+
+/**
+  This member describes the expected configuration of the USB controller,
+  Platform modules may need to refer Setup options, schematic, BIOS specification to update this field.
+  The Usb20OverCurrentPins and Usb30OverCurrentPins field must be updated by referring the schematic.
+
+  <b>Revision 1</b>:
+  - Initial version.
+  <b>Revision 2</b>:
+  - Added UaolEnable to control USB Audio Offload Capability.
+  <b>Revision 3</b>:
+  - Add HsiiEnable enable option to control HSII feature
+**/
+typedef struct {
+  CONFIG_BLOCK_HEADER     Header;                   ///< Config Block Header
+  /**
+    This policy option when set will make BIOS program Port Disable Override register during PEI phase.
+    When disabled BIOS will not program the PDO during PEI phase and leave PDO register unlocked for later programming.
+    If this is disabled, platform code MUST set it before booting into OS.
+    <b>1: Enable</b>
+    0: Disable
+  **/
+  UINT32                  PdoProgramming               :  1;
+  /**
+    This option allows for control whether USB should program the Overcurrent Pins mapping into xHCI.
+    Disabling this feature will disable overcurrent detection functionality.
+    Overcurrent Pin mapping data is contained in respective port structures (i.e. USB30_PORT_CONFIG) in OverCurrentPin field.
+    By default this Overcurrent functionality should be enabled and disabled only for OBS debug usage.
+    <b>1: Will program USB OC pin mapping in respective xHCI controller registers</b>
+    0: Will clear OC pin mapping allow for OBS usage of OC pins
+  **/
+  UINT32                  OverCurrentEnable            :  1;
+  /**
+    <b>(Test)</b>
+    If this policy option is enabled then BIOS will program OCCFDONE bit in xHCI meaning that OC mapping data will be
+    consumed by xHCI and OC mapping registers will be locked. OverCurrent mapping data is taken from respective port data
+    structure from OverCurrentPin field.
+    If EnableOverCurrent policy is enabled this also should be enabled, otherwise xHCI won't consume OC mapping data.
+    <b>1: Program OCCFDONE bit and make xHCI consume OverCurrent mapping data</b>
+    0: Do not program OCCFDONE bit making it possible to use OBS debug on OC pins.
+  **/
+  UINT32                  XhciOcLock                   :  1;
+  /**
+    Enabling this feature will allow for overriding LTR values for xHCI controller.
+    Values used for programming will be taken from this config block and BIOS will disregard recommended ones.
+    <b>0: disable - do not override recommended LTR values</b>
+    1: enable - override recommended LTR values
+  **/
+  UINT32                  LtrOverrideEnable            :  1;
+  /**
+    Enable/disable option for USB Audio Offload feture. Disabling this will disable UAOL capability
+    in xHCI and UAOL ACPI definitions will be hidden.
+    0: disable UAOL
+    <b>1: enable UAOL</b>
+  **/
+  UINT32                  UaolEnable                   :  1;
+  /**
+    Enable HS Interrupt IN Alarm
+    0: disable - Disable HSII
+    <b>1: enable - Enable HSII</b>
+  **/
+  UINT32                  HsiiEnable                   :  1;
+  UINT32                  RsvdBits0                    : 26;     ///< Reserved bits
+  /**
+    High Idle Time Control override value
+    This setting is used only if LtrOverrideEnable is enabled
+  **/
+  UINT32                  LtrHighIdleTimeOverride;
+  /**
+    Medium Idle Time Control override value
+    This setting is used only if LtrOverrideEnable is enabled
+  **/
+  UINT32                  LtrMediumIdleTimeOverride;
+  /**
+    Low Idle Time Control override value
+    This setting is used only if LtrOverrideEnable is enabled
+  **/
+  UINT32                  LtrLowIdleTimeOverride;
+  /**
+    These members describe whether the USB2 Port N of PCH is enabled by platform modules.
+  **/
+  USB2_PORT_CONFIG        PortUsb20[MAX_USB2_PORTS];
+  /**
+    These members describe whether the USB3 Port N of PCH is enabled by platform modules.
+  **/
+  USB3_PORT_CONFIG        PortUsb30[MAX_USB3_PORTS];
+  /**
+    This member describes whether or not the xDCI controller should be enabled.
+  **/
+  XDCI_CONFIG             XdciConfig;
+
+//
+// PCH:RestrictedBegin
+//
+  PCH_USB30_EP_TYPE_LOCK_POLICY_SETTINGS  Usb30EpTypeLockPolicySettings;
+  UINT32  XhciSafeMode             : 1;
+  UINT32  XdciSafeMode             : 1;
+  UINT32  TestControllerEnabled    : 1;      ///< 0: Disable; 1: Enable. Remark: Can be disabled only for debugging process!!!
+  UINT32  TestUnlockUsbForSvNoa    : 1;      ///< 1: Unlock to enable NOA usage. 0: Set  Xhci OC registers, Set Xhci OCCDone bit, XHCI Access Control Bit. Policy for SV usage. NO USE.
+  UINT32  TestClkGatingXhci        : 1;      ///< 1: Enable XHCI Clock Gating. 0: Disable XHCI Clock Gating. Policy for SV usage. NO USE.
+  /**
+  Ater xHCI is initialized, BIOS should lock the xHCI configuration registers to RO.
+  This prevents any unintended changes. BIOS should set these bits to lock down the settings prior to end of POST
+  0: POR is XHCI Access Control Bit is set and locks the registers;
+  1: Enable XHCI Access Control Bit is set and locks the registers;
+  2: Clear/Disable XHCI Access Control Bit is cleared and the registers are unlocked.
+  **/
+  UINT32  TestXhciAccessControlLock  : 2;
+  UINT32  RsvdBits1                  : 25;     ///< Reserved bits
+//
+// PCH:RestrictedEnd
+//
+} USB_CONFIG;
+
+#pragma pack (pop)
+
+#endif // _USB_CONFIG_H_
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h b/Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h
new file mode 100644
index 00000000..6e7f48fe
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h
@@ -0,0 +1,44 @@
+/** @file
+  SPI library header for abstraction of SPI HW registers accesses
+
+  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#ifndef _SPI_ACCESS_LIB_H_
+#define _SPI_ACCESS_LIB_H_
+
+
+/**
+  Returns SPI BAR0 value
+
+  @retval  UINT32  PCH SPI BAR0 value
+**/
+UINT32
+SpiGetBar0 (
+  VOID
+  );
+
+/**
+  Checks if PCH SPI Controler is present and available
+
+  @retval TRUE    PCH SPI controller is avaialable
+  @retval FALSE   PCH SPI controller is not available
+**/
+BOOLEAN
+SpiIsControllerAvailable (
+  VOID
+  );
+
+/**
+  Checks if Device Attached Flash (DAF) mode is active
+
+  @retval TRUE    SAF mode is active
+  @retval FALSE   SAF mode is not active
+**/
+BOOLEAN
+SpiIsSafModeActive (
+  VOID
+  );
+
+#endif // _SPI_ACCESS_LIB_H_
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h b/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h
new file mode 100644
index 00000000..64569ed8
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h
@@ -0,0 +1,27 @@
+/** @file
+  Register definitions for PTT HCI (Platform Trust Technology - Host Controller Interface).
+
+  Conventions:
+
+  - Prefixes:
+    Definitions beginning with "R_" are registers
+    Definitions beginning with "B_" are bits within registers
+    Definitions beginning with "V_" are meaningful values of bits within the registers
+    Definitions beginning with "S_" are register sizes
+    Definitions beginning with "N_" are the bit position
+
+  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#ifndef _PTT_HCI_REGS_H_
+#define _PTT_HCI_REGS_H_
+
+///
+/// LT public space registers
+///
+#define R_LT_UCS                           0xFED30880
+#define R_LT_EXISTS                        0xFED30010
+
+
+#endif
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h
index e13718c9..dc663198 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h
@@ -7,7 +7,7 @@
 #ifndef _SPI_COMMON_LIB_H_
 #define _SPI_COMMON_LIB_H_
 
-#include <Protocol/Spi.h>
+#include <Protocol/Spi2.h>
 
 //
 // Maximum time allowed while waiting the SPI cycle to complete
@@ -49,7 +49,7 @@ typedef enum {
 typedef struct {
   UINT32                Signature;
   EFI_HANDLE            Handle;
-  PCH_SPI_PROTOCOL      SpiProtocol;
+  PCH_SPI2_PROTOCOL     SpiProtocol;
   UINT16                PchAcpiBase;
   UINT64                PchSpiBase;
   UINT8                 ReadPermission;
@@ -157,8 +157,8 @@ IsSpiControllerSaveRestoreEnabled (
 /**
   Read data from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
   @param[out] Buffer              The Pointer to caller-allocated buffer containing the dada received.
@@ -171,8 +171,8 @@ IsSpiControllerSaveRestoreEnabled (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashRead (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
   OUT    UINT8              *Buffer
@@ -181,8 +181,8 @@ SpiProtocolFlashRead (
 /**
   Write data to the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
   @param[in] Buffer               Pointer to caller-allocated buffer containing the data sent during the SPI cycle.
@@ -194,8 +194,8 @@ SpiProtocolFlashRead (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashWrite (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
   IN     UINT8              *Buffer
@@ -204,8 +204,8 @@ SpiProtocolFlashWrite (
 /**
   Erase some area on the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
 
@@ -216,8 +216,8 @@ SpiProtocolFlashWrite (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashErase (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount
   );
@@ -225,7 +225,7 @@ SpiProtocolFlashErase (
 /**
   Read SFDP data from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ComponentNumber      The Componen Number for chip select
   @param[in] Address              The starting byte address for SFDP data read.
   @param[in] ByteCount            Number of bytes in SFDP data portion of the SPI cycle
@@ -239,7 +239,7 @@ SpiProtocolFlashErase (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadSfdp (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT8              ComponentNumber,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
@@ -249,7 +249,7 @@ SpiProtocolFlashReadSfdp (
 /**
   Read Jedec Id from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ComponentNumber      The Componen Number for chip select
   @param[in] ByteCount            Number of bytes in JedecId data portion of the SPI cycle, the data size is 3 typically
   @param[out] JedecId             The Pointer to caller-allocated buffer containing JEDEC ID received
@@ -262,7 +262,7 @@ SpiProtocolFlashReadSfdp (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadJedecId (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT8              ComponentNumber,
   IN     UINT32             ByteCount,
   OUT    UINT8              *JedecId
@@ -271,7 +271,7 @@ SpiProtocolFlashReadJedecId (
 /**
   Write the status register in the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
   @param[in] StatusValue          The Pointer to caller-allocated buffer containing the value of Status register writing
 
@@ -282,7 +282,7 @@ SpiProtocolFlashReadJedecId (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashWriteStatus (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             ByteCount,
   IN     UINT8              *StatusValue
   );
@@ -290,7 +290,7 @@ SpiProtocolFlashWriteStatus (
 /**
   Read status register in the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
   @param[out] StatusValue         The Pointer to caller-allocated buffer containing the value of Status register received.
 
@@ -301,7 +301,7 @@ SpiProtocolFlashWriteStatus (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadStatus (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             ByteCount,
   OUT    UINT8              *StatusValue
   );
@@ -309,8 +309,8 @@ SpiProtocolFlashReadStatus (
 /**
   Get the SPI region base and size, based on the enum type
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for for the base address which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[out] BaseAddress         The Flash Linear Address for the Region 'n' Base
   @param[out] RegionSize          The size for the Region 'n'
 
@@ -321,8 +321,8 @@ SpiProtocolFlashReadStatus (
 EFI_STATUS
 EFIAPI
 SpiProtocolGetRegionAddress (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   OUT    UINT32             *BaseAddress,
   OUT    UINT32             *RegionSize
   );
@@ -330,7 +330,7 @@ SpiProtocolGetRegionAddress (
 /**
   Read PCH Soft Strap Values
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] SoftStrapAddr        PCH Soft Strap address offset from FPSBA.
   @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle
   @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing PCH Soft Strap Value.
@@ -344,7 +344,7 @@ SpiProtocolGetRegionAddress (
 EFI_STATUS
 EFIAPI
 SpiProtocolReadPchSoftStrap (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             SoftStrapAddr,
   IN     UINT32             ByteCount,
   OUT    VOID               *SoftStrapValue
@@ -353,7 +353,7 @@ SpiProtocolReadPchSoftStrap (
 /**
   Read CPU Soft Strap Values
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] SoftStrapAddr        CPU Soft Strap address offset from FCPUSBA.
   @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle.
   @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing CPU Soft Strap Value.
@@ -367,7 +367,7 @@ SpiProtocolReadPchSoftStrap (
 EFI_STATUS
 EFIAPI
 SpiProtocolReadCpuSoftStrap (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             SoftStrapAddr,
   IN     UINT32             ByteCount,
   OUT    VOID               *SoftStrapValue
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h
index 5cb47911..7e4414f8 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h
@@ -62,6 +62,8 @@
 //
 // BIOS Flash Program Registers (based on SPI_BAR0)
 //
+#define R_SPI_MEM_BFPR                      0x00                          ///< BIOS Flash Primary Region Register(32bits), which is RO and contains the same value from FREG1
+#define B_SPI_MEM_BFPR_SBRS                 BIT31                         ///< Shadowed BIOS Region Select
 #define R_SPI_MEM_HSFSC                     0x04                          ///< Hardware Sequencing Flash Status and Control Register(32bits)
 #define B_SPI_MEM_HSFSC_FDBC_MASK           0x3F000000                    ///< Flash Data Byte Count ( <= 64), Count = (Value in this field) + 1.
 #define N_SPI_MEM_HSFSC_FDBC                24
@@ -78,12 +80,8 @@
 #define B_SPI_MEM_HSFSC_CYCLE_FGO           BIT16                         ///< Flash Cycle Go.
 #define B_SPI_MEM_HSFSC_FDV                 BIT14                         ///< Flash Descriptor Valid, once valid software can use hareware sequencing regs
 #define B_SPI_MEM_HSFSC_WRSDIS              BIT11                         ///< Write Status Disable
-#define B_SPI_MEM_HSFSC_SAF_CE              BIT8                          ///< SAF ctype error
-#define B_SPI_MEM_HSFSC_SAF_LE              BIT6                          ///< SAF link error
+#define B_SPI_MEM_HSFSC_SAF_MODE_ACTIVE     BIT7                          ///< Indicates flash is attached either directly to the PCH via the SPI bus or EC/BMC
 #define B_SPI_MEM_HSFSC_SCIP                BIT5                          ///< SPI cycle in progress
-#define B_SPI_MEM_HSFSC_SAF_DLE             BIT4                          ///< SAF Data length error
-#define B_SPI_MEM_HSFSC_SAF_ERROR           BIT3                          ///< SAF Error
-#define B_SPI_MEM_HSFSC_AEL                 BIT2                          ///< Access Error Log
 #define B_SPI_MEM_HSFSC_FCERR               BIT1                          ///< Flash Cycle Error
 #define B_SPI_MEM_HSFSC_FDONE               BIT0                          ///< Flash Cycle Done
 #define R_SPI_MEM_FADDR                     0x08                          ///< SPI Flash Address
@@ -113,4 +111,5 @@
 #define B_SPI_MEM_SFDPX_VSCCX_EO_64K        BIT29                         ///< 64k Erase valid (EO_64k_valid)
 #define R_SPI_MEM_SFDP1_VSCC1               0xC8                          ///< Vendor Specific Component Capabilities Register(32 bits)
 
+
 #endif
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
new file mode 100644
index 00000000..444c6b34
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
@@ -0,0 +1,33 @@
+## @file
+# Component description file for PCH SPI access library
+#
+#  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+
+[Defines]
+INF_VERSION     = 0x00010017
+BASE_NAME       = PeiDxeSmmSpiAccessLib
+FILE_GUID       = A6D4C05A-F6CB-46D5-4BA1-8C47B139DCA6
+VERSION_STRING  = 1.0
+MODULE_TYPE     = BASE
+LIBRARY_CLASS   = SpiAccessLib
+
+
+[LibraryClasses]
+BaseLib
+IoLib
+DebugLib
+PciSegmentLib
+PchPciBdfLib
+PchPcrLib
+
+[Packages]
+MdePkg/MdePkg.dec
+AlderlakeSiliconPkg/SiPkg.dec
+
+
+[Sources]
+SpiAccessLib.c
\ No newline at end of file
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c
new file mode 100644
index 00000000..da8475ea
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c
@@ -0,0 +1,75 @@
+/** @file
+  SPI library for abstraction of SPI HW registers accesses
+
+  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Base.h>
+#include <Uefi/UefiBaseType.h>
+#include <IndustryStandard/Pci22.h>
+#include <Library/BaseLib.h>
+#include <Library/IoLib.h>
+#include <Library/DebugLib.h>
+#include <Library/PciSegmentLib.h>
+#include <Library/SpiAccessLib.h>
+#include <Library/PchPciBdfLib.h>
+#include <Register/SpiRegs.h>
+#include <Register/FlashRegs.h>
+#include <Register/PchRegs.h>
+#include <Register/PchDmiRegs.h>
+
+
+/**
+  Checks if PCH SPI Controler is present and available
+
+  @retval TRUE    PCH SPI controller is avaialable
+  @retval FALSE   PCH SPI controller is not available
+**/
+BOOLEAN
+SpiIsControllerAvailable (
+  VOID
+  )
+{
+  //
+  // Checks for SPI controller
+  //
+  return (PciSegmentRead16 (SpiPciCfgBase () + PCI_VENDOR_ID_OFFSET) != 0xFFFF);
+}
+
+/**
+  Returns PCH SPI BAR0 value
+
+  @retval  UINT32  PCH SPI BAR0 value
+**/
+UINT32
+SpiGetBar0 (
+  VOID
+  )
+{
+  UINT32  SpiBar0;
+
+  ASSERT (SpiIsControllerAvailable ());
+  SpiBar0 = PciSegmentRead32 (SpiPciCfgBase () + R_SPI_CFG_BAR0) & ~B_SPI_CFG_BAR0_MASK;
+  ASSERT (SpiBar0 != 0);
+
+  return SpiBar0;
+}
+
+/**
+  Checks if device Attached Flash (DAF) mode is active
+
+  @retval TRUE    SAF mode is active
+  @retval FALSE   SAF mode is not active
+**/
+BOOLEAN
+SpiIsSafModeActive (
+  VOID
+  )
+{
+  UINT32 SpiBar0;
+  SpiBar0 = SpiGetBar0 ();
+
+  return !!(MmioRead32 (SpiBar0 + R_SPI_MEM_HSFSC) & B_SPI_MEM_HSFSC_SAF_MODE_ACTIVE);
+}
\ No newline at end of file
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c
index aaf4e179..68031b4a 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c
@@ -9,7 +9,7 @@
 #include <Library/MemoryAllocationLib.h>
 #include <Library/PeiServicesLib.h>
 #include <Library/PciSegmentLib.h>
-#include <Ppi/Spi.h>
+#include <Ppi/Spi2.h>
 #include <Library/SpiCommonLib.h>
 #include <PchReservedResources.h>
 #include <IndustryStandard/Pci30.h>
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
index c3bf6d02..e720eed2 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
@@ -30,7 +30,7 @@ PchPciBdfLib
 [Packages]
 MdePkg/MdePkg.dec
 AlderlakeSiliconPkg/SiPkg.dec
-
+IntelSiliconPkg/IntelSiliconPkg.dec
 
 [Sources]
 PchSpi.c
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
index 25ab9194..b38e149d 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
@@ -19,11 +19,28 @@
 [Packages]
   MdePkg/MdePkg.dec
   AlderlakeSiliconPkg/SiPkg.dec
+  IntelSiliconPkg/IntelSiliconPkg.dec
 
 [LibraryClasses]
   IoLib
   DebugLib
   PmcLib
   PchPciBdfLib
+  SpiAccessLib
 
-[Pcd]
+[Guids]
+  gFlashRegionDescriptorGuid
+  gFlashRegionBiosGuid
+  gFlashRegionMeGuid
+  gFlashRegionGbeGuid
+  gFlashRegionPlatformDataGuid
+  gFlashRegionDerGuid
+  gFlashRegionSecondaryBiosGuid
+  gFlashRegionMicrocodePatchGuid
+  gFlashRegionEcGuid
+  gFlashRegionDeviceExpansionGuid
+  gFlashRegionIeGuid
+  gFlashRegion10GbeAGuid
+  gFlashRegion10GbeBGuid
+  gFlashRegionAllGuid
+  gFlashRegionMaxGuid
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c
index ab51521f..0890d498 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c
@@ -12,17 +12,137 @@
 #include <IndustryStandard/Pci30.h>
 #include <Library/PmcLib.h>
 #include <Library/PciSegmentLib.h>
-#include <Protocol/Spi.h>
+#include <Protocol/Spi2.h>
 #include <Library/SpiCommonLib.h>
 #include <Register/PchRegs.h>
 #include <Register/SpiRegs.h>
 #include <Register/FlashRegs.h>
 #include <Register/PmcRegs.h>
 #include <Library/PchPciBdfLib.h>
+#include <Library/SpiAccessLib.h>
 
 #define DEFAULT_CPU_STRAP_BASE_OFFSET 0x300 // Default CPU Straps base offset
 #define B_SPI_MEM_HSFSC_SAVE_MASK     (B_SPI_MEM_HSFSC_FDBC_MASK | B_SPI_MEM_HSFSC_CYCLE_MASK)
 
+typedef enum {
+  FlashRegionDescriptor,
+  FlashRegionBios,
+  FlashRegionMe,
+  FlashRegionGbe,
+  FlashRegionPlatformData,
+  FlashRegionDer,
+  FlashRegionSecondaryBios,
+  FlashRegionMicrocodePatch,
+  FlashRegionEc,
+  FlashRegionDeviceExpansion,
+  FlashRegionIe,
+  FlashRegion10GbeA,
+  FlashRegion10GbeB,
+  FlashRegionAll = 16,
+  FlashRegionMax
+} FLASH_REGION_TYPE;
+
+typedef struct {
+  EFI_GUID            *Guid;
+  FLASH_REGION_TYPE   Type;
+} FLASH_REGION_MAPPING;
+
+FLASH_REGION_MAPPING mFlashRegionTypes[] = {
+  {
+    &gFlashRegionDescriptorGuid,
+    FlashRegionDescriptor
+  },
+  {
+    &gFlashRegionBiosGuid,
+    FlashRegionBios
+  },
+  {
+    &gFlashRegionMeGuid,
+    FlashRegionMe
+  },
+  {
+    &gFlashRegionGbeGuid,
+    FlashRegionGbe
+  },
+  {
+    &gFlashRegionPlatformDataGuid,
+    FlashRegionPlatformData
+  },
+  {
+    &gFlashRegionDerGuid,
+    FlashRegionDer
+  },
+  {
+    &gFlashRegionSecondaryBiosGuid,
+    FlashRegionSecondaryBios
+  },
+  {
+    &gFlashRegionMicrocodePatchGuid,
+    FlashRegionMicrocodePatch
+  },
+  {
+    &gFlashRegionEcGuid,
+    FlashRegionEc
+  },
+  {
+    &gFlashRegionDeviceExpansionGuid,
+    FlashRegionDeviceExpansion
+  },
+  {
+    &gFlashRegionIeGuid,
+    FlashRegionIe
+  },
+  {
+    &gFlashRegion10GbeAGuid,
+    FlashRegion10GbeA
+  },
+  {
+    &gFlashRegion10GbeBGuid,
+    FlashRegion10GbeB
+  },
+  {
+    &gFlashRegionAllGuid,
+    FlashRegionAll
+  },
+  {
+    &gFlashRegionMaxGuid,
+    FlashRegionMax
+  }
+};
+
+/**
+  Returns the type of a flash region given its GUID.
+
+  @param[in]    FlashRegionGuid   Pointer to the flash region GUID.
+  @param[out]   FlashRegionType   Pointer to a buffer that will be set to the flash region type value.
+
+  @retval       EFI_SUCCESS             The flash region type was found for the given flash region GUID.
+  @retval       EFI_INVALID_PARAMETER   A pointer argument passed to the function is NULL.
+  @retval       EFI_NOT_FOUND           The flash region type was not found for the given flash region GUID.
+
+**/
+EFI_STATUS
+GetFlashRegionType (
+  IN     EFI_GUID           *FlashRegionGuid,
+  OUT    FLASH_REGION_TYPE  *FlashRegionType
+  )
+{
+  UINTN   Index;
+
+  if (FlashRegionGuid == NULL || FlashRegionType == NULL) {
+    return EFI_INVALID_PARAMETER;
+  }
+
+  for (Index = 0; Index < ARRAY_SIZE (mFlashRegionTypes); Index++) {
+    if (CompareGuid (mFlashRegionTypes[Index].Guid, FlashRegionGuid)) {
+      *FlashRegionType = mFlashRegionTypes[Index].Type;
+      return EFI_SUCCESS;
+    }
+  }
+
+  return EFI_NOT_FOUND;
+}
+
 /**
   Initialize an SPI protocol instance.
 
@@ -184,7 +304,7 @@ SpiProtocolConstructor (
   // If CPU Strap base address is different than 0x300 need to add MDTBA value for final location
   //
   if (SpiInstance->CpuStrapBaseAddr != DEFAULT_CPU_STRAP_BASE_OFFSET) {
-    Status = SpiProtocolFlashRead (&(SpiInstance->SpiProtocol), FlashRegionAll, R_FLASH_UMAP1, sizeof (Data32), (UINT8 *) (&Data32));
+    Status = SpiProtocolFlashRead (&(SpiInstance->SpiProtocol), &gFlashRegionAllGuid, R_FLASH_UMAP1, sizeof (Data32), (UINT8 *) (&Data32));
     ASSERT_EFI_ERROR (Status);
     Mdtba = (UINT16)(((Data32 & B_FLASH_UMAP1_MDTBA) >> N_FLASH_UMAP1_MDTBA) << N_FLASH_UMAP1_MDTBA_REPR);
     DEBUG ((DEBUG_INFO, "Mdtba : %0x\n", Mdtba));
@@ -279,7 +399,7 @@ PchPmTimerStallRuntimeSafe (
 STATIC
 BOOLEAN
 WaitForSpiCycleComplete (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINTN              PchSpiBar0,
   IN     BOOLEAN            ErrorCheck
   )
@@ -317,7 +437,7 @@ WaitForSpiCycleComplete (
   This function waits for a pending SPI transaction to complete without clearing
   status fields
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] PchSpiBar0           SPI MMIO address
 
   @retval TRUE                    SPI cycle completed on the interface.
@@ -327,7 +447,7 @@ WaitForSpiCycleComplete (
 BOOLEAN
 STATIC
 WaitForScipNoClear (
-  IN      PCH_SPI_PROTOCOL    *This,
+  IN      PCH_SPI2_PROTOCOL   *This,
   IN      UINTN               PchSpiBar0
   )
 {
@@ -352,87 +472,11 @@ WaitForScipNoClear (
   return FALSE;
 }
 
-/**
-  This function sets the FDONE and optionally FCERR bits in the HSFS_CTL register
-
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] PchSpiBar0           SPI MMIO address
-  @param[in] SetErrorBit          Set to TRUE to set the FCERR bit
-
-**/
-VOID
-STATIC
-SetHsfscFdone (
-  IN      PCH_SPI_PROTOCOL    *This,
-  IN      UINTN               PchSpiBar0,
-  IN      BOOLEAN             SetFcErrorBit
-  )
-{
-  EFI_STATUS    Status;
-  UINT32        HardwareSpiAddr;
-  UINT32        FlashRegionSize;
-  UINT32        Index;
-  UINT8         DataCount;
-
-  Status = SpiProtocolGetRegionAddress (This, FlashRegionBios, &HardwareSpiAddr, &FlashRegionSize);
-  if (EFI_ERROR (Status)) {
-    return;
-  }
-
-  //
-  // Clear FDONE and FCERR
-  //
-  MmioWrite8 (PchSpiBar0 + R_SPI_MEM_HSFSC, B_SPI_MEM_HSFSC_FCERR | B_SPI_MEM_HSFSC_FDONE);
-
-  //
-  // Fill data buffer
-  //
-  if (SetFcErrorBit) {
-    for (Index = 0; Index < 64; Index += sizeof (UINT32)) {
-      MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FDATA00 + Index, 0xFFFFFFFF);
-    }
-  }
-
-  //
-  // Set the Flash Address
-  //
-  MmioWrite32 (
-    (PchSpiBar0 + R_SPI_MEM_FADDR),
-    (UINT32) (HardwareSpiAddr & B_SPI_MEM_FADDR_MASK)
-    );
-  //
-  // Set Data count, Flash cycle, and Set Go bit to start a cycle
-  //
-  if (SetFcErrorBit) {
-    DataCount = 0x3F;
-  } else {
-    DataCount = 0;
-  }
-  MmioAndThenOr32 (
-    PchSpiBar0 + R_SPI_MEM_HSFSC,
-    (UINT32) (~(B_SPI_MEM_HSFSC_FDBC_MASK | B_SPI_MEM_HSFSC_CYCLE_MASK)),
-    (UINT32) (((DataCount << N_SPI_MEM_HSFSC_FDBC) & B_SPI_MEM_HSFSC_FDBC_MASK) |
-              (V_SPI_MEM_HSFSC_CYCLE_READ << N_SPI_MEM_HSFSC_CYCLE)             |
-              B_SPI_MEM_HSFSC_CYCLE_FGO)
-    );
-
-  if (SetFcErrorBit) {
-    //
-    // Intentionally write to FDATA while a cycle is in progress to generate an error
-    //
-    for (Index = 0; Index < 64; Index += sizeof (UINT32)) {
-      MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FDATA00 + Index, 0x0);
-    }
-  }
-
-  WaitForScipNoClear (This, PchSpiBar0);
-}
-
 /**
   This function sends the programmed SPI command to the device.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] SpiRegionType        The SPI Region type for flash cycle which is listed in the Descriptor
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] FlashCycleType       The Flash SPI cycle type list in HSFC (Hardware Sequencing Flash Control Register) register
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
@@ -446,8 +490,8 @@ SetHsfscFdone (
 STATIC
 EFI_STATUS
 SendSpiCmd (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     FLASH_CYCLE_TYPE   FlashCycleType,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
@@ -564,7 +608,7 @@ SendSpiCmd (
     }
   }
 
-  Status = SpiProtocolGetRegionAddress (This, FlashRegionType, &HardwareSpiAddr, &FlashRegionSize);
+  Status = SpiProtocolGetRegionAddress (This, FlashRegionGuid, &HardwareSpiAddr, &FlashRegionSize);
   if (EFI_ERROR (Status)) {
     goto SendSpiCmdEnd;
   }
@@ -751,31 +795,6 @@ SendSpiCmd (
   } while (ByteCount > 0);
 
 SendSpiCmdEnd:
-  //
-  // Restore SPI controller state
-  //
-  if (RestoreState) {
-    if (HsfscFdoneSave) {
-      SetHsfscFdone (This, PchSpiBar0, HsfscFcerrSave);
-    }
-    MmioAndThenOr32 (
-      PchSpiBar0 + R_SPI_MEM_HSFSC,
-      (UINT32)  ~(B_SPI_MEM_HSFSC_SAVE_MASK |
-                  B_SPI_MEM_HSFSC_SAF_CE    |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_SAF_LE    |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_SAF_DLE   |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_SAF_ERROR |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_AEL       |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_FCERR     |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_FDONE),       // This bit clears when set to 1, ensure 0 is written
-      HsfscSave
-      );
-    MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FADDR, FaddrSave);
-    for (Index = 0; Index < 64; Index += sizeof (UINT32)) {
-      MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FDATA00 + Index, FdataSave[Index >> 2]);
-    }
-  }
-
   //
   // Restore the settings for SPI Prefetching and Caching and enable BIOS Write Protect
   //
@@ -801,8 +820,8 @@ SendSpiCmdEnd:
 /**
   Read data from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
   @param[out] Buffer              The Pointer to caller-allocated buffer containing the dada received.
@@ -815,8 +834,8 @@ SendSpiCmdEnd:
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashRead (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
   OUT    UINT8              *Buffer
@@ -829,7 +848,7 @@ SpiProtocolFlashRead (
   //
   Status = SendSpiCmd (
              This,
-             FlashRegionType,
+             FlashRegionGuid,
              FlashCycleRead,
              Address,
              ByteCount,
@@ -841,8 +860,8 @@ SpiProtocolFlashRead (
 /**
   Write data to the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
   @param[in] Buffer               Pointer to caller-allocated buffer containing the data sent during the SPI cycle.
@@ -854,8 +873,8 @@ SpiProtocolFlashRead (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashWrite (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
   IN     UINT8              *Buffer
@@ -868,7 +887,7 @@ SpiProtocolFlashWrite (
   //
   Status = SendSpiCmd (
              This,
-             FlashRegionType,
+             FlashRegionGuid,
              FlashCycleWrite,
              Address,
              ByteCount,
@@ -880,8 +899,8 @@ SpiProtocolFlashWrite (
 /**
   Erase some area on the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
 
@@ -892,8 +911,8 @@ SpiProtocolFlashWrite (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashErase (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount
   )
@@ -905,7 +924,7 @@ SpiProtocolFlashErase (
   //
   Status = SendSpiCmd (
              This,
-             FlashRegionType,
+             FlashRegionGuid,
              FlashCycleErase,
              Address,
              ByteCount,
@@ -917,7 +936,7 @@ SpiProtocolFlashErase (
 /**
   Read SFDP data from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ComponentNumber      The Componen Number for chip select
   @param[in] Address              The starting byte address for SFDP data read.
   @param[in] ByteCount            Number of bytes in SFDP data portion of the SPI cycle
@@ -932,20 +951,53 @@ SpiProtocolFlashErase (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadSfdp (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT8              ComponentNumber,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
   OUT    UINT8              *SfdpData
   )
 {
-  return EFI_SUCCESS;
+  SPI_INSTANCE      *SpiInstance;
+  EFI_STATUS        Status;
+  UINT32            FlashAddress;
+
+  if (SpiIsSafModeActive ()) {
+    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
+    return EFI_UNSUPPORTED;
+  }
+
+  SpiInstance       = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
+  Status            = EFI_SUCCESS;
+
+  if (ComponentNumber > SpiInstance->NumberOfComponents) {
+    ASSERT (FALSE);
+    return EFI_INVALID_PARAMETER;
+  }
+
+  FlashAddress = 0;
+  if (ComponentNumber == FlashComponent1) {
+    FlashAddress = SpiInstance->Component1StartAddr;
+  }
+  FlashAddress += Address;
+  //
+  // Sends the command to the SPI interface to execute.
+  //
+  Status = SendSpiCmd (
+             This,
+             &gFlashRegionAllGuid,
+             FlashCycleReadSfdp,
+             FlashAddress,
+             ByteCount,
+             SfdpData
+             );
+  return Status;
 }
 
 /**
   Read Jedec Id from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ComponentNumber      The Componen Number for chip select
   @param[in] ByteCount            Number of bytes in JedecId data portion of the SPI cycle, the data size is 3 typically
   @param[out] JedecId             The Pointer to caller-allocated buffer containing JEDEC ID received
@@ -959,19 +1011,52 @@ SpiProtocolFlashReadSfdp (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadJedecId (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT8              ComponentNumber,
   IN     UINT32             ByteCount,
   OUT    UINT8              *JedecId
   )
 {
-  return EFI_SUCCESS;
+  SPI_INSTANCE      *SpiInstance;
+  EFI_STATUS        Status;
+  UINT32            Address;
+
+  if (SpiIsSafModeActive ()) {
+    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
+    return EFI_UNSUPPORTED;
+  }
+
+  SpiInstance       = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
+  Status            = EFI_SUCCESS;
+
+  if (ComponentNumber > SpiInstance->NumberOfComponents) {
+    ASSERT (FALSE);
+    return EFI_INVALID_PARAMETER;
+  }
+
+  Address = 0;
+  if (ComponentNumber == FlashComponent1) {
+    Address = SpiInstance->Component1StartAddr;
+  }
+
+  //
+  // Sends the command to the SPI interface to execute.
+  //
+  Status = SendSpiCmd (
+             This,
+             &gFlashRegionAllGuid,
+             FlashCycleReadJedecId,
+             Address,
+             ByteCount,
+             JedecId
+             );
+  return Status;
 }
 
 /**
   Write the status register in the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
   @param[in] StatusValue          The Pointer to caller-allocated buffer containing the value of Status register writing
 
@@ -983,18 +1068,36 @@ SpiProtocolFlashReadJedecId (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashWriteStatus (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             ByteCount,
   IN     UINT8              *StatusValue
   )
 {
-  return EFI_SUCCESS;
+  EFI_STATUS        Status;
+
+  if (SpiIsSafModeActive ()) {
+    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
+    return EFI_UNSUPPORTED;
+  }
+
+  //
+  // Sends the command to the SPI interface to execute.
+  //
+  Status = SendSpiCmd (
+             This,
+             &gFlashRegionAllGuid,
+             FlashCycleWriteStatus,
+             0,
+             ByteCount,
+             StatusValue
+             );
+  return Status;
 }
 
 /**
   Read status register in the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
   @param[out] StatusValue         The Pointer to caller-allocated buffer containing the value of Status register received.
 
@@ -1006,19 +1109,37 @@ SpiProtocolFlashWriteStatus (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadStatus (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             ByteCount,
   OUT    UINT8              *StatusValue
   )
 {
-  return EFI_SUCCESS;
+  EFI_STATUS        Status;
+
+  if (SpiIsSafModeActive ()) {
+    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
+    return EFI_UNSUPPORTED;
+  }
+
+  //
+  // Sends the command to the SPI interface to execute.
+  //
+  Status = SendSpiCmd (
+             This,
+             &gFlashRegionAllGuid,
+             FlashCycleReadStatus,
+             0,
+             ByteCount,
+             StatusValue
+             );
+  return Status;
 }
 
 /**
   Get the SPI region base and size, based on the enum type
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for for the base address which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[out] BaseAddress         The Flash Linear Address for the Region 'n' Base
   @param[out] RegionSize          The size for the Region 'n'
 
@@ -1029,18 +1150,24 @@ SpiProtocolFlashReadStatus (
 EFI_STATUS
 EFIAPI
 SpiProtocolGetRegionAddress (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   OUT    UINT32             *BaseAddress,
   OUT    UINT32             *RegionSize
   )
 {
+  EFI_STATUS          Status;
+  FLASH_REGION_TYPE   FlashRegionType;
   SPI_INSTANCE    *SpiInstance;
   UINTN           PchSpiBar0;
   UINT32          ReadValue;
 
   SpiInstance     = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
 
+  Status = GetFlashRegionType (FlashRegionGuid, &FlashRegionType);
+  if (EFI_ERROR (Status)) {
+    return EFI_INVALID_PARAMETER;
+  }
   if (FlashRegionType >= FlashRegionMax) {
     return EFI_INVALID_PARAMETER;
   }
@@ -1053,10 +1180,13 @@ SpiProtocolGetRegionAddress (
 
   PchSpiBar0      = AcquireSpiBar0 (SpiInstance);
 
-  ReadValue = MmioRead32 (PchSpiBar0 + (R_SPI_MEM_FREG0_FLASHD + (S_SPI_MEM_FREGX * ((UINT32) FlashRegionType))));
+  if (((MmioRead32 (PchSpiBar0 + R_SPI_MEM_BFPR) & B_SPI_MEM_BFPR_SBRS) != 0) &&
+      (FlashRegionType == FlashRegionBios)) {
+    FlashRegionType = FlashRegionSecondaryBios;
+  }
 
   ReleaseSpiBar0 (SpiInstance);
-
+  ReadValue = MmioRead32 (PchSpiBar0 + (R_SPI_MEM_FREG0_FLASHD + (S_SPI_MEM_FREGX * ((UINT32) FlashRegionType))));
   //
   // If the region is not used, the Region Base is 7FFFh and Region Limit is 0000h
   //
@@ -1077,7 +1207,7 @@ SpiProtocolGetRegionAddress (
 /**
   Read PCH Soft Strap Values
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] SoftStrapAddr        PCH Soft Strap address offset from FPSBA.
   @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle
   @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing PCH Soft Strap Value.
@@ -1091,19 +1221,51 @@ SpiProtocolGetRegionAddress (
 EFI_STATUS
 EFIAPI
 SpiProtocolReadPchSoftStrap (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             SoftStrapAddr,
   IN     UINT32             ByteCount,
   OUT    VOID               *SoftStrapValue
   )
 {
-  return EFI_SUCCESS;
+  SPI_INSTANCE      *SpiInstance;
+  UINT32            StrapFlashAddr;
+  EFI_STATUS        Status;
+
+  SpiInstance     = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
+
+  if (ByteCount == 0) {
+    *(UINT16 *) SoftStrapValue = SpiInstance->PchStrapSize;
+    return EFI_SUCCESS;
+  }
+
+  if ((SoftStrapAddr + ByteCount) > (UINT32) SpiInstance->PchStrapSize) {
+    ASSERT (FALSE);
+    return EFI_INVALID_PARAMETER;
+  }
+
+  //
+  // PCH Strap Flash Address = FPSBA + RamAddr
+  //
+  StrapFlashAddr = SpiInstance->PchStrapBaseAddr + SoftStrapAddr;
+
+  //
+  // Read PCH Soft straps from using execute command
+  //
+  Status = SendSpiCmd (
+             This,
+              &gFlashRegionDescriptorGuid,
+             FlashCycleRead,
+             StrapFlashAddr,
+             ByteCount,
+             SoftStrapValue
+             );
+  return Status;
 }
 
 /**
   Read CPU Soft Strap Values
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] SoftStrapAddr        CPU Soft Strap address offset from FCPUSBA.
   @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle.
   @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing CPU Soft Strap Value.
@@ -1117,11 +1279,43 @@ SpiProtocolReadPchSoftStrap (
 EFI_STATUS
 EFIAPI
 SpiProtocolReadCpuSoftStrap (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             SoftStrapAddr,
   IN     UINT32             ByteCount,
   OUT    VOID               *SoftStrapValue
   )
 {
-  return EFI_SUCCESS;
+  SPI_INSTANCE      *SpiInstance;
+  UINT32            StrapFlashAddr;
+  EFI_STATUS        Status;
+
+  SpiInstance     = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
+
+  if (ByteCount == 0) {
+    *(UINT16 *) SoftStrapValue = SpiInstance->CpuStrapSize;
+    return EFI_SUCCESS;
+  }
+
+  if ((SoftStrapAddr + ByteCount) > (UINT32) SpiInstance->CpuStrapSize) {
+    ASSERT (FALSE);
+    return EFI_INVALID_PARAMETER;
+  }
+
+  //
+  // CPU Strap Flash Address = FCPUSBA + RamAddr
+  //
+  StrapFlashAddr = SpiInstance->CpuStrapBaseAddr + SoftStrapAddr;
+
+  //
+  // Read Cpu Soft straps from using execute command
+  //
+  Status = SendSpiCmd (
+             This,
+             &gFlashRegionDescriptorGuid,
+             FlashCycleRead,
+             StrapFlashAddr,
+             ByteCount,
+             SoftStrapValue
+             );
+  return Status;
 }
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c
index 2dd80eba..164f017c 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c
@@ -13,10 +13,11 @@
 #include <Library/BaseMemoryLib.h>
 #include <Library/SmmServicesTableLib.h>
 #include <Library/PciSegmentLib.h>
-#include <Protocol/Spi.h>
+#include <Protocol/Spi2.h>
 #include <Protocol/SmmCpu.h>
 #include <Library/SpiCommonLib.h>
 #include <PchReservedResources.h>
+#include <Library/SmmPchPrivateLib.h>
 #include <Library/PchPciBdfLib.h>
 #include <IndustryStandard/Pci30.h>
 #include <Register/PchRegs.h>
@@ -82,8 +83,8 @@ SpiExitBootServicesCallback (
       - Documented in System Management Mode Core Interface Specification .
 
   - @result
-    The SPI SMM driver produces @link _PCH_SPI_PROTOCOL PCH_SPI_PROTOCOL @endlink with GUID
-    gPchSmmSpiProtocolGuid which is different from SPI RUNTIME driver.
+    The SPI SMM driver produces @link _PCH_SPI2_PROTOCOL PCH_SPI2_PROTOCOL @endlink with GUID
+    gPchSmmSpi2ProtocolGuid which is different from SPI RUNTIME driver.
 
   - <b>Integration Check List</b>\n
     - This driver supports Descriptor Mode only.
@@ -163,11 +164,11 @@ InstallPchSpi (
   }
 
   //
-  // Install the SMM PCH_SPI_PROTOCOL interface
+  // Install the SMM PCH_SPI2_PROTOCOL interface
   //
   Status = gSmst->SmmInstallProtocolInterface (
                     &(mSpiInstance->Handle),
-                    &gPchSmmSpiProtocolGuid,
+                    &gPchSmmSpi2ProtocolGuid,
                     EFI_NATIVE_INTERFACE,
                     &(mSpiInstance->SpiProtocol)
                     );
@@ -303,6 +304,23 @@ DisableBiosWriteProtect (
     B_SPI_CFG_BC_WPD
     );
 
+  ///
+  /// PCH BIOS Spec Section 3.7 BIOS Region SMM Protection Enabling
+  /// If the following steps are implemented:
+  ///  - Set the EISS bit (SPI PCI Offset DCh [5]) = 1b
+  ///  - Follow the 1st recommendation in section 3.6
+  /// the BIOS Region can only be updated by following the steps bellow:
+  ///  - Once all threads enter SMM
+  ///  - Read memory location FED30880h OR with 00000001h, place the result in EAX,
+  ///    and write data to lower 32 bits of MSR 1FEh (sample code available)
+  ///  - Set BIOSWE bit (SPI PCI Offset DCh [0]) = 1b
+  ///  - Modify BIOS Region
+  ///  - Clear BIOSWE bit (SPI PCI Offset DCh [0]) = 0b
+  ///
+  if ((PciSegmentRead8 (SpiBaseAddress + R_SPI_CFG_BC) & B_SPI_CFG_BC_EISS) != 0) {
+    PchSetInSmmSts ();
+  }
+
   return EFI_SUCCESS;
 }
 
@@ -327,6 +345,12 @@ EnableBiosWriteProtect (
     (UINT8) (~B_SPI_CFG_BC_WPD)
     );
 
+  ///
+  /// Check if EISS bit is set
+  ///
+  if (((PciSegmentRead8 (SpiBaseAddress + R_SPI_CFG_BC)) & B_SPI_CFG_BC_EISS) == B_SPI_CFG_BC_EISS) {
+    PchClearInSmmSts ();
+  }
 }
 
 /**
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf
index 78913423..445f4af8 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf
@@ -24,19 +24,20 @@ UefiBootServicesTableLib
 BaseLib
 SmmServicesTableLib
 SpiCommonLib
+SmmPchPrivateLib
 PchPciBdfLib
 
 [Packages]
 MdePkg/MdePkg.dec
 AlderlakeSiliconPkg/SiPkg.dec
-
+IntelSiliconPkg/IntelSiliconPkg.dec
 
 [Sources]
 Spi.c
 
 
 [Protocols]
-gPchSmmSpiProtocolGuid                ## PRODUCES
+gPchSmmSpi2ProtocolGuid                ## PRODUCES
 gEfiSmmCpuProtocolGuid                ## CONSUMES
 gEdkiiSmmExitBootServicesProtocolGuid ## CONSUMES
 
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h b/Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h
new file mode 100644
index 00000000..63857863
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h
@@ -0,0 +1,27 @@
+/** @file
+  Header file for private PCH SMM Lib.
+
+  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#ifndef _SMM_PCH_PRIVATE_LIB_H_
+#define _SMM_PCH_PRIVATE_LIB_H_
+
+/**
+  Set InSmm.Sts bit
+**/
+VOID
+PchSetInSmmSts (
+  VOID
+  );
+
+/**
+  Clear InSmm.Sts bit
+**/
+VOID
+PchClearInSmmSts (
+  VOID
+  );
+
+#endif // _SMM_PCH_PRIVATE_LIB_H_
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c
new file mode 100644
index 00000000..bdb2283d
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c
@@ -0,0 +1,83 @@
+/** @file
+  PCH SMM private lib.
+
+  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Uefi/UefiBaseType.h>
+#include <Library/BaseLib.h>
+#include <Library/IoLib.h>
+#include <Library/DebugLib.h>
+#include <Library/CpuPlatformLib.h>
+#include <CpuRegs.h>
+#include <Register/CommonMsr.h>
+#include <Register/PttPtpRegs.h>
+
+
+/**
+  Set InSmm.Sts bit
+**/
+VOID
+PchSetInSmmSts (
+  VOID
+  )
+{
+  UINT32      Data32;
+
+  ///
+  /// If platform disables TXT_PTLEN strap, NL socket(s) will target abort
+  /// when trying to access LT register space below, and writes to
+  /// NL's MSR 0x1FE will GP fault. Check straps enabled first.
+  ///
+
+  Data32 = MmioRead32 (R_LT_EXISTS);
+
+  if (Data32 == 0xFFFFFFFF) {
+    return;
+  }
+  ///
+  /// Read memory location FED30880h OR with 00000001h, place the result in EAX,
+  /// and write data to lower 32 bits of MSR 1FEh (sample code available)
+  ///
+  Data32 = MmioRead32 (R_LT_UCS);
+  AsmWriteMsr32 (MSR_SPCL_CHIPSET_USAGE, Data32 | BIT0);
+  ///
+  /// Read FED30880h back to ensure the setting went through.
+  ///
+  Data32 = MmioRead32 (R_LT_UCS);
+}
+
+/**
+  Clear InSmm.Sts bit
+**/
+VOID
+PchClearInSmmSts (
+  VOID
+  )
+{
+  UINT32      Data32;
+
+  ///
+  /// If platform disables TXT_PTLEN strap, NL socket(s) will target abort
+  /// when trying to access LT register space below, and writes to
+  /// NL's MSR 0x1FE will GP fault. Check straps enabled first.
+  ///
+
+  Data32 = MmioRead32 (R_LT_EXISTS);
+  if (Data32 == 0xFFFFFFFF) {
+    return;
+  }
+
+  ///
+  /// Read memory location FED30880h AND with FFFFFFFEh, place the result in EAX,
+  /// and write data to lower 32 bits of MSR 1FEh (sample code available)
+  ///
+  Data32 = MmioRead32 (R_LT_UCS);
+  AsmWriteMsr32 (MSR_SPCL_CHIPSET_USAGE, Data32 & (UINT32) (~BIT0));
+  ///
+  /// Read FED30880h back to ensure the setting went through.
+  ///
+  Data32 = MmioRead32 (R_LT_UCS);
+}
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf
new file mode 100644
index 00000000..3c62b9b8
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf
@@ -0,0 +1,32 @@
+## @file
+#  PCH SMM private lib.
+#
+#  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+
+[Defines]
+INF_VERSION = 0x00010017
+BASE_NAME = SmmPchPrivateLib
+FILE_GUID = FE6495FB-7AA9-4A24-BF3E-4698F7BCE0EE
+VERSION_STRING = 1.0
+MODULE_TYPE = DXE_SMM_DRIVER
+LIBRARY_CLASS = SmmPchPrivateLib
+
+
+[LibraryClasses]
+BaseLib
+IoLib
+DebugLib
+CpuPlatformLib
+
+
+[Packages]
+MdePkg/MdePkg.dec
+AlderlakeSiliconPkg/SiPkg.dec
+
+
+[Sources]
+SmmPchPrivateLib.c
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc b/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc
index 37876cbf..238473c2 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc
@@ -11,6 +11,11 @@
 !include $(PLATFORM_SI_PACKAGE)/Fru/AdlCpu/DxeLib.dsc
 !include $(PLATFORM_SI_PACKAGE)/Fru/AdlPch/DxeLib.dsc
 
+#
+# Pch
+#
+ SmmPchPrivateLib|$(PLATFORM_SI_PACKAGE)/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf
+
 #
 # Common
 #
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec b/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec
index ce9cfe59..4871a014 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec
+++ b/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec
@@ -33,6 +33,7 @@ IpBlock/HostBridge/IncludePrivate
 
 # Cpu
 Cpu/IncludePrivate
+Pch/IncludePrivate
 
 IncludePrivate
 
@@ -93,6 +94,8 @@ Include/ConfigBlock/Wdt
 Include/ConfigBlock/PcieRp/PchPcieRp
 Include/ConfigBlock/PcieRp
 Include/ConfigBlock/SerialIo
+Include/ConfigBlock/Usb
+
 
 [Guids.common.Private]
 #
@@ -193,6 +196,7 @@ gPcieRpPreMemConfigGuid  =  {0x8377AB38, 0xF8B0, 0x476A, { 0x9C, 0xA1, 0x68, 0xE
 gSmbusPreMemConfigGuid  =  {0x77A6E62C, 0x716B, 0x4386, {0x9E, 0x9C, 0x23, 0xA0, 0x2E, 0x13, 0x7B, 0x3A}}
 gLpcPreMemConfigGuid  =  {0xA6E6032F, 0x1E58, 0x407E, {0x9A, 0xB8, 0xC6, 0x30, 0xC6, 0xC4, 0x11, 0x8E}}
 gPchDmiPreMemConfigGuid  =  {0x4DA4AA22, 0xB54A, 0x43D7, {0x87, 0xC8, 0xA3, 0xCF, 0x53, 0xE6, 0xC1, 0x8A}}
+gUsbConfigGuid  =  {0xB2DA9CCD, 0x6A8C, 0x4BB6, {0xB3, 0xE6, 0xCD, 0xFB, 0xB7, 0x66, 0x8B, 0xDE}}
 
 gPchGeneralConfigGuid  =  {0x6ED94C8C, 0x25F7, 0x4686, {0xB2, 0x46, 0xCA, 0x4D, 0xE2, 0x95, 0x4B, 0x5D}}
 gPchPcieConfigGuid  =  {0x0A53B507, 0x988B, 0x475C, {0xBF, 0x76, 0x33, 0xDE, 0x10, 0x6D, 0x94, 0x84}}
@@ -355,6 +359,7 @@ PchInfoLib|Pch/Include/Library/PchInfoLib.h
 PchPcieRpLib|Include/Library/PchPcieRpLib.h
 PchPcrLib|Include/Library/PchPcrLib.h
 PchSbiAccessLib|IpBlock/P2sb/IncludePrivate/Library/PchSbiAccessLib.h
+SmmPchPrivateLib|Pch/IncludePrivate/Library/SmmPchPrivateLib.h
 PchPciBdfLib|Pch/Include/Library/PchPciBdfLib.h
 PchRasLib|Pch/Include/Library/PchRasLib.h
 PchRtcLib|Pch/Include/Library/PchRtcLib.h
@@ -394,7 +399,7 @@ OcPlatformLib|Include/Library/OcPlatformLib.h
 PeiSpsPreMemPolicyLib|Include/Library/PeiSpsPreMemPolicyLib.h
 PmcLib|Include/Library/PmcLib.h
 PmcSsramLib|Include/Library/PmcSsramLib.h
-SpiLib|Include/Library/SpiLib.h
+SpiAccessLib|Include/Library/SpiAccessLib.h
 SpsDxeLib|Include/Library/SpsDxeLib.h
 SpsGetDxeConfigBlockLib|Include/Library/SpsGetDxeConfigBlock.h
 MeGetPeiConfigBlock|Include/Library/MeGetConfigBlock.h
-- 
2.26.2.windows.1



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^ permalink raw reply related	[flat|nested] 6+ messages in thread

* [edk2-devel] [PATCH] AlderlakeSiliconPkg: Update for SPI2 Protocol and Identify flash regions by GUID
@ 2024-02-15  9:21 dorax.hsueh
  0 siblings, 0 replies; 6+ messages in thread
From: dorax.hsueh @ 2024-02-15  9:21 UTC (permalink / raw)
  To: devel
  Cc: DoraX Hsueh, Sai Chaganty, Rosen Chuang, Saloni Kasbekar,
	Haoyu Tang, Nate DeSimone

From: DoraX Hsueh <dorax.hsueh@intel.com>

https://bugzilla.tianocore.org/show_bug.cgi?id=4664

1. Updates references to the "PCH_SPI_PROTOCOL" to instead refer to "PCH_SPI2_PROTOCOL".
2. Updates the library to identify flash regions by GUID and internally
map the GUID entries to values specific to AlderlakeSiliconPkg.
3. Libs/modules that need to reference IntelSiliconPkg are updated.

Cc: Sai Chaganty <rangasai.v.chaganty@intel.com>
Cc: Rosen Chuang <rosen.chuang@intel.com>
Cc: Saloni Kasbekar <saloni.kasbekar@intel.com>
Cc: Haoyu Tang <haoyu.tang@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Signed-off-by: DoraX Hsueh <dorax.hsueh@intel.com>
---
 .../Cpu/Include/Register/CommonMsr.h          |   4 +
 .../Fru/AdlPch/CommonLib.dsc                  |   2 +-
 .../AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc |   2 -
 .../Include/Library/SpiAccessLib.h            |  44 ++
 .../Include/Register/PttPtpRegs.h             |  27 +
 .../Spi/IncludePrivate/Library/SpiCommonLib.h |  60 +--
 .../Spi/IncludePrivate/Register/SpiRegs.h     |   9 +-
 .../PeiDxeSmmSpiAccessLib.inf                 |  33 ++
 .../PeiDxeSmmSpiAccessLib/SpiAccessLib.c      |  75 +++
 .../IpBlock/Spi/Library/PeiSpiLib/PchSpi.c    |   2 +-
 .../Spi/Library/PeiSpiLib/PeiSpiLib.inf       |   2 +-
 .../BaseSpiCommonLib/BaseSpiCommonLib.inf     |  19 +-
 .../BaseSpiCommonLib/SpiCommon.c              | 494 ++++++++++++------
 .../AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c |  30 +-
 .../IpBlock/Spi/Smm/SpiSmm.inf                |   5 +-
 .../IncludePrivate/Library/SmmPchPrivateLib.h |  27 +
 .../SmmPchPrivateLib/SmmPchPrivateLib.c       |  83 +++
 .../SmmPchPrivateLib/SmmPchPrivateLib.inf     |  32 ++
 .../Product/Alderlake/SiPkgDxeLib.dsc         |   5 +
 Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec   |   4 +-
 20 files changed, 760 insertions(+), 199 deletions(-)
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf

diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h b/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h
index caa0e67b..44a476c0 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h
@@ -56,5 +56,9 @@ typedef union {
 
 } MSR_CORE_THREAD_COUNT_REGISTER;
 
+/**
+  Special Chipset Usage MSR
+**/
+#define MSR_SPCL_CHIPSET_USAGE 0x000001FE
 
 #endif /* _COMMONMSR_h */
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc
index 3f508f83..ee5800a9 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc
@@ -11,7 +11,7 @@
 
   EspiLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Espi/Library/PeiDxeSmmEspiLib/PeiDxeSmmEspiLib.inf
 
-
+  SpiAccessLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
   PmcLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Pmc/Library/PeiDxeSmmPmcLib/PeiDxeSmmPmcLib.inf
   PmcPrivateLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Pmc/LibraryPrivate/PeiDxeSmmPmcPrivateLib/PeiDxeSmmPmcPrivateLib.inf
   SpiCommonLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc
index ebe2bbfd..cbaf8e37 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc
@@ -5,8 +5,6 @@
 #   SPDX-License-Identifier: BSD-2-Clause-Patent
 ##
 
-  SpiLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
-
   GpioHelpersLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Gpio/LibraryPrivate/PeiGpioHelpersLib/PeiGpioHelpersLib.inf
 
 
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h b/Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h
new file mode 100644
index 00000000..6e7f48fe
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h
@@ -0,0 +1,44 @@
+/** @file
+  SPI library header for abstraction of SPI HW registers accesses
+
+  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#ifndef _SPI_ACCESS_LIB_H_
+#define _SPI_ACCESS_LIB_H_
+
+
+/**
+  Returns SPI BAR0 value
+
+  @retval  UINT32  PCH SPI BAR0 value
+**/
+UINT32
+SpiGetBar0 (
+  VOID
+  );
+
+/**
+  Checks if PCH SPI Controler is present and available
+
+  @retval TRUE    PCH SPI controller is avaialable
+  @retval FALSE   PCH SPI controller is not available
+**/
+BOOLEAN
+SpiIsControllerAvailable (
+  VOID
+  );
+
+/**
+  Checks if Device Attached Flash (DAF) mode is active
+
+  @retval TRUE    SAF mode is active
+  @retval FALSE   SAF mode is not active
+**/
+BOOLEAN
+SpiIsSafModeActive (
+  VOID
+  );
+
+#endif // _SPI_ACCESS_LIB_H_
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h b/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h
new file mode 100644
index 00000000..64569ed8
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h
@@ -0,0 +1,27 @@
+/** @file
+  Register definitions for PTT HCI (Platform Trust Technology - Host Controller Interface).
+
+  Conventions:
+
+  - Prefixes:
+    Definitions beginning with "R_" are registers
+    Definitions beginning with "B_" are bits within registers
+    Definitions beginning with "V_" are meaningful values of bits within the registers
+    Definitions beginning with "S_" are register sizes
+    Definitions beginning with "N_" are the bit position
+
+  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#ifndef _PTT_HCI_REGS_H_
+#define _PTT_HCI_REGS_H_
+
+///
+/// LT public space registers
+///
+#define R_LT_UCS                           0xFED30880
+#define R_LT_EXISTS                        0xFED30010
+
+
+#endif
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h
index e13718c9..dc663198 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h
@@ -7,7 +7,7 @@
 #ifndef _SPI_COMMON_LIB_H_
 #define _SPI_COMMON_LIB_H_
 
-#include <Protocol/Spi.h>
+#include <Protocol/Spi2.h>
 
 //
 // Maximum time allowed while waiting the SPI cycle to complete
@@ -49,7 +49,7 @@ typedef enum {
 typedef struct {
   UINT32                Signature;
   EFI_HANDLE            Handle;
-  PCH_SPI_PROTOCOL      SpiProtocol;
+  PCH_SPI2_PROTOCOL     SpiProtocol;
   UINT16                PchAcpiBase;
   UINT64                PchSpiBase;
   UINT8                 ReadPermission;
@@ -157,8 +157,8 @@ IsSpiControllerSaveRestoreEnabled (
 /**
   Read data from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
   @param[out] Buffer              The Pointer to caller-allocated buffer containing the dada received.
@@ -171,8 +171,8 @@ IsSpiControllerSaveRestoreEnabled (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashRead (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
   OUT    UINT8              *Buffer
@@ -181,8 +181,8 @@ SpiProtocolFlashRead (
 /**
   Write data to the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
   @param[in] Buffer               Pointer to caller-allocated buffer containing the data sent during the SPI cycle.
@@ -194,8 +194,8 @@ SpiProtocolFlashRead (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashWrite (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
   IN     UINT8              *Buffer
@@ -204,8 +204,8 @@ SpiProtocolFlashWrite (
 /**
   Erase some area on the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
 
@@ -216,8 +216,8 @@ SpiProtocolFlashWrite (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashErase (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount
   );
@@ -225,7 +225,7 @@ SpiProtocolFlashErase (
 /**
   Read SFDP data from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ComponentNumber      The Componen Number for chip select
   @param[in] Address              The starting byte address for SFDP data read.
   @param[in] ByteCount            Number of bytes in SFDP data portion of the SPI cycle
@@ -239,7 +239,7 @@ SpiProtocolFlashErase (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadSfdp (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT8              ComponentNumber,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
@@ -249,7 +249,7 @@ SpiProtocolFlashReadSfdp (
 /**
   Read Jedec Id from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ComponentNumber      The Componen Number for chip select
   @param[in] ByteCount            Number of bytes in JedecId data portion of the SPI cycle, the data size is 3 typically
   @param[out] JedecId             The Pointer to caller-allocated buffer containing JEDEC ID received
@@ -262,7 +262,7 @@ SpiProtocolFlashReadSfdp (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadJedecId (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT8              ComponentNumber,
   IN     UINT32             ByteCount,
   OUT    UINT8              *JedecId
@@ -271,7 +271,7 @@ SpiProtocolFlashReadJedecId (
 /**
   Write the status register in the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
   @param[in] StatusValue          The Pointer to caller-allocated buffer containing the value of Status register writing
 
@@ -282,7 +282,7 @@ SpiProtocolFlashReadJedecId (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashWriteStatus (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             ByteCount,
   IN     UINT8              *StatusValue
   );
@@ -290,7 +290,7 @@ SpiProtocolFlashWriteStatus (
 /**
   Read status register in the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
   @param[out] StatusValue         The Pointer to caller-allocated buffer containing the value of Status register received.
 
@@ -301,7 +301,7 @@ SpiProtocolFlashWriteStatus (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadStatus (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             ByteCount,
   OUT    UINT8              *StatusValue
   );
@@ -309,8 +309,8 @@ SpiProtocolFlashReadStatus (
 /**
   Get the SPI region base and size, based on the enum type
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for for the base address which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[out] BaseAddress         The Flash Linear Address for the Region 'n' Base
   @param[out] RegionSize          The size for the Region 'n'
 
@@ -321,8 +321,8 @@ SpiProtocolFlashReadStatus (
 EFI_STATUS
 EFIAPI
 SpiProtocolGetRegionAddress (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   OUT    UINT32             *BaseAddress,
   OUT    UINT32             *RegionSize
   );
@@ -330,7 +330,7 @@ SpiProtocolGetRegionAddress (
 /**
   Read PCH Soft Strap Values
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] SoftStrapAddr        PCH Soft Strap address offset from FPSBA.
   @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle
   @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing PCH Soft Strap Value.
@@ -344,7 +344,7 @@ SpiProtocolGetRegionAddress (
 EFI_STATUS
 EFIAPI
 SpiProtocolReadPchSoftStrap (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             SoftStrapAddr,
   IN     UINT32             ByteCount,
   OUT    VOID               *SoftStrapValue
@@ -353,7 +353,7 @@ SpiProtocolReadPchSoftStrap (
 /**
   Read CPU Soft Strap Values
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] SoftStrapAddr        CPU Soft Strap address offset from FCPUSBA.
   @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle.
   @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing CPU Soft Strap Value.
@@ -367,7 +367,7 @@ SpiProtocolReadPchSoftStrap (
 EFI_STATUS
 EFIAPI
 SpiProtocolReadCpuSoftStrap (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             SoftStrapAddr,
   IN     UINT32             ByteCount,
   OUT    VOID               *SoftStrapValue
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h
index 5cb47911..7e4414f8 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h
@@ -62,6 +62,8 @@
 //
 // BIOS Flash Program Registers (based on SPI_BAR0)
 //
+#define R_SPI_MEM_BFPR                      0x00                          ///< BIOS Flash Primary Region Register(32bits), which is RO and contains the same value from FREG1
+#define B_SPI_MEM_BFPR_SBRS                 BIT31                         ///< Shadowed BIOS Region Select
 #define R_SPI_MEM_HSFSC                     0x04                          ///< Hardware Sequencing Flash Status and Control Register(32bits)
 #define B_SPI_MEM_HSFSC_FDBC_MASK           0x3F000000                    ///< Flash Data Byte Count ( <= 64), Count = (Value in this field) + 1.
 #define N_SPI_MEM_HSFSC_FDBC                24
@@ -78,12 +80,8 @@
 #define B_SPI_MEM_HSFSC_CYCLE_FGO           BIT16                         ///< Flash Cycle Go.
 #define B_SPI_MEM_HSFSC_FDV                 BIT14                         ///< Flash Descriptor Valid, once valid software can use hareware sequencing regs
 #define B_SPI_MEM_HSFSC_WRSDIS              BIT11                         ///< Write Status Disable
-#define B_SPI_MEM_HSFSC_SAF_CE              BIT8                          ///< SAF ctype error
-#define B_SPI_MEM_HSFSC_SAF_LE              BIT6                          ///< SAF link error
+#define B_SPI_MEM_HSFSC_SAF_MODE_ACTIVE     BIT7                          ///< Indicates flash is attached either directly to the PCH via the SPI bus or EC/BMC
 #define B_SPI_MEM_HSFSC_SCIP                BIT5                          ///< SPI cycle in progress
-#define B_SPI_MEM_HSFSC_SAF_DLE             BIT4                          ///< SAF Data length error
-#define B_SPI_MEM_HSFSC_SAF_ERROR           BIT3                          ///< SAF Error
-#define B_SPI_MEM_HSFSC_AEL                 BIT2                          ///< Access Error Log
 #define B_SPI_MEM_HSFSC_FCERR               BIT1                          ///< Flash Cycle Error
 #define B_SPI_MEM_HSFSC_FDONE               BIT0                          ///< Flash Cycle Done
 #define R_SPI_MEM_FADDR                     0x08                          ///< SPI Flash Address
@@ -113,4 +111,5 @@
 #define B_SPI_MEM_SFDPX_VSCCX_EO_64K        BIT29                         ///< 64k Erase valid (EO_64k_valid)
 #define R_SPI_MEM_SFDP1_VSCC1               0xC8                          ///< Vendor Specific Component Capabilities Register(32 bits)
 
+
 #endif
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
new file mode 100644
index 00000000..444c6b34
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
@@ -0,0 +1,33 @@
+## @file
+# Component description file for PCH SPI access library
+#
+#  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+
+[Defines]
+INF_VERSION     = 0x00010017
+BASE_NAME       = PeiDxeSmmSpiAccessLib
+FILE_GUID       = A6D4C05A-F6CB-46D5-4BA1-8C47B139DCA6
+VERSION_STRING  = 1.0
+MODULE_TYPE     = BASE
+LIBRARY_CLASS   = SpiAccessLib
+
+
+[LibraryClasses]
+BaseLib
+IoLib
+DebugLib
+PciSegmentLib
+PchPciBdfLib
+PchPcrLib
+
+[Packages]
+MdePkg/MdePkg.dec
+AlderlakeSiliconPkg/SiPkg.dec
+
+
+[Sources]
+SpiAccessLib.c
\ No newline at end of file
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c
new file mode 100644
index 00000000..da8475ea
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c
@@ -0,0 +1,75 @@
+/** @file
+  SPI library for abstraction of SPI HW registers accesses
+
+  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Base.h>
+#include <Uefi/UefiBaseType.h>
+#include <IndustryStandard/Pci22.h>
+#include <Library/BaseLib.h>
+#include <Library/IoLib.h>
+#include <Library/DebugLib.h>
+#include <Library/PciSegmentLib.h>
+#include <Library/SpiAccessLib.h>
+#include <Library/PchPciBdfLib.h>
+#include <Register/SpiRegs.h>
+#include <Register/FlashRegs.h>
+#include <Register/PchRegs.h>
+#include <Register/PchDmiRegs.h>
+
+
+/**
+  Checks if PCH SPI Controler is present and available
+
+  @retval TRUE    PCH SPI controller is avaialable
+  @retval FALSE   PCH SPI controller is not available
+**/
+BOOLEAN
+SpiIsControllerAvailable (
+  VOID
+  )
+{
+  //
+  // Checks for SPI controller
+  //
+  return (PciSegmentRead16 (SpiPciCfgBase () + PCI_VENDOR_ID_OFFSET) != 0xFFFF);
+}
+
+/**
+  Returns PCH SPI BAR0 value
+
+  @retval  UINT32  PCH SPI BAR0 value
+**/
+UINT32
+SpiGetBar0 (
+  VOID
+  )
+{
+  UINT32  SpiBar0;
+
+  ASSERT (SpiIsControllerAvailable ());
+  SpiBar0 = PciSegmentRead32 (SpiPciCfgBase () + R_SPI_CFG_BAR0) & ~B_SPI_CFG_BAR0_MASK;
+  ASSERT (SpiBar0 != 0);
+
+  return SpiBar0;
+}
+
+/**
+  Checks if device Attached Flash (DAF) mode is active
+
+  @retval TRUE    SAF mode is active
+  @retval FALSE   SAF mode is not active
+**/
+BOOLEAN
+SpiIsSafModeActive (
+  VOID
+  )
+{
+  UINT32 SpiBar0;
+  SpiBar0 = SpiGetBar0 ();
+
+  return !!(MmioRead32 (SpiBar0 + R_SPI_MEM_HSFSC) & B_SPI_MEM_HSFSC_SAF_MODE_ACTIVE);
+}
\ No newline at end of file
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c
index aaf4e179..68031b4a 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c
@@ -9,7 +9,7 @@
 #include <Library/MemoryAllocationLib.h>
 #include <Library/PeiServicesLib.h>
 #include <Library/PciSegmentLib.h>
-#include <Ppi/Spi.h>
+#include <Ppi/Spi2.h>
 #include <Library/SpiCommonLib.h>
 #include <PchReservedResources.h>
 #include <IndustryStandard/Pci30.h>
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
index c3bf6d02..e720eed2 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
@@ -30,7 +30,7 @@ PchPciBdfLib
 [Packages]
 MdePkg/MdePkg.dec
 AlderlakeSiliconPkg/SiPkg.dec
-
+IntelSiliconPkg/IntelSiliconPkg.dec
 
 [Sources]
 PchSpi.c
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
index 25ab9194..b38e149d 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
@@ -19,11 +19,28 @@
 [Packages]
   MdePkg/MdePkg.dec
   AlderlakeSiliconPkg/SiPkg.dec
+  IntelSiliconPkg/IntelSiliconPkg.dec
 
 [LibraryClasses]
   IoLib
   DebugLib
   PmcLib
   PchPciBdfLib
+  SpiAccessLib
 
-[Pcd]
+[Guids]
+  gFlashRegionDescriptorGuid
+  gFlashRegionBiosGuid
+  gFlashRegionMeGuid
+  gFlashRegionGbeGuid
+  gFlashRegionPlatformDataGuid
+  gFlashRegionDerGuid
+  gFlashRegionSecondaryBiosGuid
+  gFlashRegionMicrocodePatchGuid
+  gFlashRegionEcGuid
+  gFlashRegionDeviceExpansionGuid
+  gFlashRegionIeGuid
+  gFlashRegion10GbeAGuid
+  gFlashRegion10GbeBGuid
+  gFlashRegionAllGuid
+  gFlashRegionMaxGuid
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c
index ab51521f..0890d498 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c
@@ -12,17 +12,137 @@
 #include <IndustryStandard/Pci30.h>
 #include <Library/PmcLib.h>
 #include <Library/PciSegmentLib.h>
-#include <Protocol/Spi.h>
+#include <Protocol/Spi2.h>
 #include <Library/SpiCommonLib.h>
 #include <Register/PchRegs.h>
 #include <Register/SpiRegs.h>
 #include <Register/FlashRegs.h>
 #include <Register/PmcRegs.h>
 #include <Library/PchPciBdfLib.h>
+#include <Library/SpiAccessLib.h>
 
 #define DEFAULT_CPU_STRAP_BASE_OFFSET 0x300 // Default CPU Straps base offset
 #define B_SPI_MEM_HSFSC_SAVE_MASK     (B_SPI_MEM_HSFSC_FDBC_MASK | B_SPI_MEM_HSFSC_CYCLE_MASK)
 
+typedef enum {
+  FlashRegionDescriptor,
+  FlashRegionBios,
+  FlashRegionMe,
+  FlashRegionGbe,
+  FlashRegionPlatformData,
+  FlashRegionDer,
+  FlashRegionSecondaryBios,
+  FlashRegionMicrocodePatch,
+  FlashRegionEc,
+  FlashRegionDeviceExpansion,
+  FlashRegionIe,
+  FlashRegion10GbeA,
+  FlashRegion10GbeB,
+  FlashRegionAll = 16,
+  FlashRegionMax
+} FLASH_REGION_TYPE;
+
+typedef struct {
+  EFI_GUID            *Guid;
+  FLASH_REGION_TYPE   Type;
+} FLASH_REGION_MAPPING;
+
+FLASH_REGION_MAPPING mFlashRegionTypes[] = {
+  {
+    &gFlashRegionDescriptorGuid,
+    FlashRegionDescriptor
+  },
+  {
+    &gFlashRegionBiosGuid,
+    FlashRegionBios
+  },
+  {
+    &gFlashRegionMeGuid,
+    FlashRegionMe
+  },
+  {
+    &gFlashRegionGbeGuid,
+    FlashRegionGbe
+  },
+  {
+    &gFlashRegionPlatformDataGuid,
+    FlashRegionPlatformData
+  },
+  {
+    &gFlashRegionDerGuid,
+    FlashRegionDer
+  },
+  {
+    &gFlashRegionSecondaryBiosGuid,
+    FlashRegionSecondaryBios
+  },
+  {
+    &gFlashRegionMicrocodePatchGuid,
+    FlashRegionMicrocodePatch
+  },
+  {
+    &gFlashRegionEcGuid,
+    FlashRegionEc
+  },
+  {
+    &gFlashRegionDeviceExpansionGuid,
+    FlashRegionDeviceExpansion
+  },
+  {
+    &gFlashRegionIeGuid,
+    FlashRegionIe
+  },
+  {
+    &gFlashRegion10GbeAGuid,
+    FlashRegion10GbeA
+  },
+  {
+    &gFlashRegion10GbeBGuid,
+    FlashRegion10GbeB
+  },
+  {
+    &gFlashRegionAllGuid,
+    FlashRegionAll
+  },
+  {
+    &gFlashRegionMaxGuid,
+    FlashRegionMax
+  }
+};
+
+/**
+  Returns the type of a flash region given its GUID.
+
+  @param[in]    FlashRegionGuid   Pointer to the flash region GUID.
+  @param[out]   FlashRegionType   Pointer to a buffer that will be set to the flash region type value.
+
+  @retval       EFI_SUCCESS             The flash region type was found for the given flash region GUID.
+  @retval       EFI_INVALID_PARAMETER   A pointer argument passed to the function is NULL.
+  @retval       EFI_NOT_FOUND           The flash region type was not found for the given flash region GUID.
+
+**/
+EFI_STATUS
+GetFlashRegionType (
+  IN     EFI_GUID           *FlashRegionGuid,
+  OUT    FLASH_REGION_TYPE  *FlashRegionType
+  )
+{
+  UINTN   Index;
+
+  if (FlashRegionGuid == NULL || FlashRegionType == NULL) {
+    return EFI_INVALID_PARAMETER;
+  }
+
+  for (Index = 0; Index < ARRAY_SIZE (mFlashRegionTypes); Index++) {
+    if (CompareGuid (mFlashRegionTypes[Index].Guid, FlashRegionGuid)) {
+      *FlashRegionType = mFlashRegionTypes[Index].Type;
+      return EFI_SUCCESS;
+    }
+  }
+
+  return EFI_NOT_FOUND;
+}
+
 /**
   Initialize an SPI protocol instance.
 
@@ -184,7 +304,7 @@ SpiProtocolConstructor (
   // If CPU Strap base address is different than 0x300 need to add MDTBA value for final location
   //
   if (SpiInstance->CpuStrapBaseAddr != DEFAULT_CPU_STRAP_BASE_OFFSET) {
-    Status = SpiProtocolFlashRead (&(SpiInstance->SpiProtocol), FlashRegionAll, R_FLASH_UMAP1, sizeof (Data32), (UINT8 *) (&Data32));
+    Status = SpiProtocolFlashRead (&(SpiInstance->SpiProtocol), &gFlashRegionAllGuid, R_FLASH_UMAP1, sizeof (Data32), (UINT8 *) (&Data32));
     ASSERT_EFI_ERROR (Status);
     Mdtba = (UINT16)(((Data32 & B_FLASH_UMAP1_MDTBA) >> N_FLASH_UMAP1_MDTBA) << N_FLASH_UMAP1_MDTBA_REPR);
     DEBUG ((DEBUG_INFO, "Mdtba : %0x\n", Mdtba));
@@ -279,7 +399,7 @@ PchPmTimerStallRuntimeSafe (
 STATIC
 BOOLEAN
 WaitForSpiCycleComplete (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINTN              PchSpiBar0,
   IN     BOOLEAN            ErrorCheck
   )
@@ -317,7 +437,7 @@ WaitForSpiCycleComplete (
   This function waits for a pending SPI transaction to complete without clearing
   status fields
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] PchSpiBar0           SPI MMIO address
 
   @retval TRUE                    SPI cycle completed on the interface.
@@ -327,7 +447,7 @@ WaitForSpiCycleComplete (
 BOOLEAN
 STATIC
 WaitForScipNoClear (
-  IN      PCH_SPI_PROTOCOL    *This,
+  IN      PCH_SPI2_PROTOCOL   *This,
   IN      UINTN               PchSpiBar0
   )
 {
@@ -352,87 +472,11 @@ WaitForScipNoClear (
   return FALSE;
 }
 
-/**
-  This function sets the FDONE and optionally FCERR bits in the HSFS_CTL register
-
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] PchSpiBar0           SPI MMIO address
-  @param[in] SetErrorBit          Set to TRUE to set the FCERR bit
-
-**/
-VOID
-STATIC
-SetHsfscFdone (
-  IN      PCH_SPI_PROTOCOL    *This,
-  IN      UINTN               PchSpiBar0,
-  IN      BOOLEAN             SetFcErrorBit
-  )
-{
-  EFI_STATUS    Status;
-  UINT32        HardwareSpiAddr;
-  UINT32        FlashRegionSize;
-  UINT32        Index;
-  UINT8         DataCount;
-
-  Status = SpiProtocolGetRegionAddress (This, FlashRegionBios, &HardwareSpiAddr, &FlashRegionSize);
-  if (EFI_ERROR (Status)) {
-    return;
-  }
-
-  //
-  // Clear FDONE and FCERR
-  //
-  MmioWrite8 (PchSpiBar0 + R_SPI_MEM_HSFSC, B_SPI_MEM_HSFSC_FCERR | B_SPI_MEM_HSFSC_FDONE);
-
-  //
-  // Fill data buffer
-  //
-  if (SetFcErrorBit) {
-    for (Index = 0; Index < 64; Index += sizeof (UINT32)) {
-      MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FDATA00 + Index, 0xFFFFFFFF);
-    }
-  }
-
-  //
-  // Set the Flash Address
-  //
-  MmioWrite32 (
-    (PchSpiBar0 + R_SPI_MEM_FADDR),
-    (UINT32) (HardwareSpiAddr & B_SPI_MEM_FADDR_MASK)
-    );
-  //
-  // Set Data count, Flash cycle, and Set Go bit to start a cycle
-  //
-  if (SetFcErrorBit) {
-    DataCount = 0x3F;
-  } else {
-    DataCount = 0;
-  }
-  MmioAndThenOr32 (
-    PchSpiBar0 + R_SPI_MEM_HSFSC,
-    (UINT32) (~(B_SPI_MEM_HSFSC_FDBC_MASK | B_SPI_MEM_HSFSC_CYCLE_MASK)),
-    (UINT32) (((DataCount << N_SPI_MEM_HSFSC_FDBC) & B_SPI_MEM_HSFSC_FDBC_MASK) |
-              (V_SPI_MEM_HSFSC_CYCLE_READ << N_SPI_MEM_HSFSC_CYCLE)             |
-              B_SPI_MEM_HSFSC_CYCLE_FGO)
-    );
-
-  if (SetFcErrorBit) {
-    //
-    // Intentionally write to FDATA while a cycle is in progress to generate an error
-    //
-    for (Index = 0; Index < 64; Index += sizeof (UINT32)) {
-      MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FDATA00 + Index, 0x0);
-    }
-  }
-
-  WaitForScipNoClear (This, PchSpiBar0);
-}
-
 /**
   This function sends the programmed SPI command to the device.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] SpiRegionType        The SPI Region type for flash cycle which is listed in the Descriptor
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] FlashCycleType       The Flash SPI cycle type list in HSFC (Hardware Sequencing Flash Control Register) register
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
@@ -446,8 +490,8 @@ SetHsfscFdone (
 STATIC
 EFI_STATUS
 SendSpiCmd (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     FLASH_CYCLE_TYPE   FlashCycleType,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
@@ -564,7 +608,7 @@ SendSpiCmd (
     }
   }
 
-  Status = SpiProtocolGetRegionAddress (This, FlashRegionType, &HardwareSpiAddr, &FlashRegionSize);
+  Status = SpiProtocolGetRegionAddress (This, FlashRegionGuid, &HardwareSpiAddr, &FlashRegionSize);
   if (EFI_ERROR (Status)) {
     goto SendSpiCmdEnd;
   }
@@ -751,31 +795,6 @@ SendSpiCmd (
   } while (ByteCount > 0);
 
 SendSpiCmdEnd:
-  //
-  // Restore SPI controller state
-  //
-  if (RestoreState) {
-    if (HsfscFdoneSave) {
-      SetHsfscFdone (This, PchSpiBar0, HsfscFcerrSave);
-    }
-    MmioAndThenOr32 (
-      PchSpiBar0 + R_SPI_MEM_HSFSC,
-      (UINT32)  ~(B_SPI_MEM_HSFSC_SAVE_MASK |
-                  B_SPI_MEM_HSFSC_SAF_CE    |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_SAF_LE    |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_SAF_DLE   |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_SAF_ERROR |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_AEL       |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_FCERR     |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_FDONE),       // This bit clears when set to 1, ensure 0 is written
-      HsfscSave
-      );
-    MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FADDR, FaddrSave);
-    for (Index = 0; Index < 64; Index += sizeof (UINT32)) {
-      MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FDATA00 + Index, FdataSave[Index >> 2]);
-    }
-  }
-
   //
   // Restore the settings for SPI Prefetching and Caching and enable BIOS Write Protect
   //
@@ -801,8 +820,8 @@ SendSpiCmdEnd:
 /**
   Read data from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
   @param[out] Buffer              The Pointer to caller-allocated buffer containing the dada received.
@@ -815,8 +834,8 @@ SendSpiCmdEnd:
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashRead (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
   OUT    UINT8              *Buffer
@@ -829,7 +848,7 @@ SpiProtocolFlashRead (
   //
   Status = SendSpiCmd (
              This,
-             FlashRegionType,
+             FlashRegionGuid,
              FlashCycleRead,
              Address,
              ByteCount,
@@ -841,8 +860,8 @@ SpiProtocolFlashRead (
 /**
   Write data to the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
   @param[in] Buffer               Pointer to caller-allocated buffer containing the data sent during the SPI cycle.
@@ -854,8 +873,8 @@ SpiProtocolFlashRead (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashWrite (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
   IN     UINT8              *Buffer
@@ -868,7 +887,7 @@ SpiProtocolFlashWrite (
   //
   Status = SendSpiCmd (
              This,
-             FlashRegionType,
+             FlashRegionGuid,
              FlashCycleWrite,
              Address,
              ByteCount,
@@ -880,8 +899,8 @@ SpiProtocolFlashWrite (
 /**
   Erase some area on the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
 
@@ -892,8 +911,8 @@ SpiProtocolFlashWrite (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashErase (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount
   )
@@ -905,7 +924,7 @@ SpiProtocolFlashErase (
   //
   Status = SendSpiCmd (
              This,
-             FlashRegionType,
+             FlashRegionGuid,
              FlashCycleErase,
              Address,
              ByteCount,
@@ -917,7 +936,7 @@ SpiProtocolFlashErase (
 /**
   Read SFDP data from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ComponentNumber      The Componen Number for chip select
   @param[in] Address              The starting byte address for SFDP data read.
   @param[in] ByteCount            Number of bytes in SFDP data portion of the SPI cycle
@@ -932,20 +951,53 @@ SpiProtocolFlashErase (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadSfdp (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT8              ComponentNumber,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
   OUT    UINT8              *SfdpData
   )
 {
-  return EFI_SUCCESS;
+  SPI_INSTANCE      *SpiInstance;
+  EFI_STATUS        Status;
+  UINT32            FlashAddress;
+
+  if (SpiIsSafModeActive ()) {
+    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
+    return EFI_UNSUPPORTED;
+  }
+
+  SpiInstance       = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
+  Status            = EFI_SUCCESS;
+
+  if (ComponentNumber > SpiInstance->NumberOfComponents) {
+    ASSERT (FALSE);
+    return EFI_INVALID_PARAMETER;
+  }
+
+  FlashAddress = 0;
+  if (ComponentNumber == FlashComponent1) {
+    FlashAddress = SpiInstance->Component1StartAddr;
+  }
+  FlashAddress += Address;
+  //
+  // Sends the command to the SPI interface to execute.
+  //
+  Status = SendSpiCmd (
+             This,
+             &gFlashRegionAllGuid,
+             FlashCycleReadSfdp,
+             FlashAddress,
+             ByteCount,
+             SfdpData
+             );
+  return Status;
 }
 
 /**
   Read Jedec Id from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ComponentNumber      The Componen Number for chip select
   @param[in] ByteCount            Number of bytes in JedecId data portion of the SPI cycle, the data size is 3 typically
   @param[out] JedecId             The Pointer to caller-allocated buffer containing JEDEC ID received
@@ -959,19 +1011,52 @@ SpiProtocolFlashReadSfdp (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadJedecId (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT8              ComponentNumber,
   IN     UINT32             ByteCount,
   OUT    UINT8              *JedecId
   )
 {
-  return EFI_SUCCESS;
+  SPI_INSTANCE      *SpiInstance;
+  EFI_STATUS        Status;
+  UINT32            Address;
+
+  if (SpiIsSafModeActive ()) {
+    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
+    return EFI_UNSUPPORTED;
+  }
+
+  SpiInstance       = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
+  Status            = EFI_SUCCESS;
+
+  if (ComponentNumber > SpiInstance->NumberOfComponents) {
+    ASSERT (FALSE);
+    return EFI_INVALID_PARAMETER;
+  }
+
+  Address = 0;
+  if (ComponentNumber == FlashComponent1) {
+    Address = SpiInstance->Component1StartAddr;
+  }
+
+  //
+  // Sends the command to the SPI interface to execute.
+  //
+  Status = SendSpiCmd (
+             This,
+             &gFlashRegionAllGuid,
+             FlashCycleReadJedecId,
+             Address,
+             ByteCount,
+             JedecId
+             );
+  return Status;
 }
 
 /**
   Write the status register in the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
   @param[in] StatusValue          The Pointer to caller-allocated buffer containing the value of Status register writing
 
@@ -983,18 +1068,36 @@ SpiProtocolFlashReadJedecId (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashWriteStatus (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             ByteCount,
   IN     UINT8              *StatusValue
   )
 {
-  return EFI_SUCCESS;
+  EFI_STATUS        Status;
+
+  if (SpiIsSafModeActive ()) {
+    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
+    return EFI_UNSUPPORTED;
+  }
+
+  //
+  // Sends the command to the SPI interface to execute.
+  //
+  Status = SendSpiCmd (
+             This,
+             &gFlashRegionAllGuid,
+             FlashCycleWriteStatus,
+             0,
+             ByteCount,
+             StatusValue
+             );
+  return Status;
 }
 
 /**
   Read status register in the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
   @param[out] StatusValue         The Pointer to caller-allocated buffer containing the value of Status register received.
 
@@ -1006,19 +1109,37 @@ SpiProtocolFlashWriteStatus (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadStatus (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             ByteCount,
   OUT    UINT8              *StatusValue
   )
 {
-  return EFI_SUCCESS;
+  EFI_STATUS        Status;
+
+  if (SpiIsSafModeActive ()) {
+    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
+    return EFI_UNSUPPORTED;
+  }
+
+  //
+  // Sends the command to the SPI interface to execute.
+  //
+  Status = SendSpiCmd (
+             This,
+             &gFlashRegionAllGuid,
+             FlashCycleReadStatus,
+             0,
+             ByteCount,
+             StatusValue
+             );
+  return Status;
 }
 
 /**
   Get the SPI region base and size, based on the enum type
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for for the base address which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[out] BaseAddress         The Flash Linear Address for the Region 'n' Base
   @param[out] RegionSize          The size for the Region 'n'
 
@@ -1029,18 +1150,24 @@ SpiProtocolFlashReadStatus (
 EFI_STATUS
 EFIAPI
 SpiProtocolGetRegionAddress (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   OUT    UINT32             *BaseAddress,
   OUT    UINT32             *RegionSize
   )
 {
+  EFI_STATUS          Status;
+  FLASH_REGION_TYPE   FlashRegionType;
   SPI_INSTANCE    *SpiInstance;
   UINTN           PchSpiBar0;
   UINT32          ReadValue;
 
   SpiInstance     = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
 
+  Status = GetFlashRegionType (FlashRegionGuid, &FlashRegionType);
+  if (EFI_ERROR (Status)) {
+    return EFI_INVALID_PARAMETER;
+  }
   if (FlashRegionType >= FlashRegionMax) {
     return EFI_INVALID_PARAMETER;
   }
@@ -1053,10 +1180,13 @@ SpiProtocolGetRegionAddress (
 
   PchSpiBar0      = AcquireSpiBar0 (SpiInstance);
 
-  ReadValue = MmioRead32 (PchSpiBar0 + (R_SPI_MEM_FREG0_FLASHD + (S_SPI_MEM_FREGX * ((UINT32) FlashRegionType))));
+  if (((MmioRead32 (PchSpiBar0 + R_SPI_MEM_BFPR) & B_SPI_MEM_BFPR_SBRS) != 0) &&
+      (FlashRegionType == FlashRegionBios)) {
+    FlashRegionType = FlashRegionSecondaryBios;
+  }
 
   ReleaseSpiBar0 (SpiInstance);
-
+  ReadValue = MmioRead32 (PchSpiBar0 + (R_SPI_MEM_FREG0_FLASHD + (S_SPI_MEM_FREGX * ((UINT32) FlashRegionType))));
   //
   // If the region is not used, the Region Base is 7FFFh and Region Limit is 0000h
   //
@@ -1077,7 +1207,7 @@ SpiProtocolGetRegionAddress (
 /**
   Read PCH Soft Strap Values
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] SoftStrapAddr        PCH Soft Strap address offset from FPSBA.
   @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle
   @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing PCH Soft Strap Value.
@@ -1091,19 +1221,51 @@ SpiProtocolGetRegionAddress (
 EFI_STATUS
 EFIAPI
 SpiProtocolReadPchSoftStrap (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             SoftStrapAddr,
   IN     UINT32             ByteCount,
   OUT    VOID               *SoftStrapValue
   )
 {
-  return EFI_SUCCESS;
+  SPI_INSTANCE      *SpiInstance;
+  UINT32            StrapFlashAddr;
+  EFI_STATUS        Status;
+
+  SpiInstance     = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
+
+  if (ByteCount == 0) {
+    *(UINT16 *) SoftStrapValue = SpiInstance->PchStrapSize;
+    return EFI_SUCCESS;
+  }
+
+  if ((SoftStrapAddr + ByteCount) > (UINT32) SpiInstance->PchStrapSize) {
+    ASSERT (FALSE);
+    return EFI_INVALID_PARAMETER;
+  }
+
+  //
+  // PCH Strap Flash Address = FPSBA + RamAddr
+  //
+  StrapFlashAddr = SpiInstance->PchStrapBaseAddr + SoftStrapAddr;
+
+  //
+  // Read PCH Soft straps from using execute command
+  //
+  Status = SendSpiCmd (
+             This,
+              &gFlashRegionDescriptorGuid,
+             FlashCycleRead,
+             StrapFlashAddr,
+             ByteCount,
+             SoftStrapValue
+             );
+  return Status;
 }
 
 /**
   Read CPU Soft Strap Values
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] SoftStrapAddr        CPU Soft Strap address offset from FCPUSBA.
   @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle.
   @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing CPU Soft Strap Value.
@@ -1117,11 +1279,43 @@ SpiProtocolReadPchSoftStrap (
 EFI_STATUS
 EFIAPI
 SpiProtocolReadCpuSoftStrap (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             SoftStrapAddr,
   IN     UINT32             ByteCount,
   OUT    VOID               *SoftStrapValue
   )
 {
-  return EFI_SUCCESS;
+  SPI_INSTANCE      *SpiInstance;
+  UINT32            StrapFlashAddr;
+  EFI_STATUS        Status;
+
+  SpiInstance     = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
+
+  if (ByteCount == 0) {
+    *(UINT16 *) SoftStrapValue = SpiInstance->CpuStrapSize;
+    return EFI_SUCCESS;
+  }
+
+  if ((SoftStrapAddr + ByteCount) > (UINT32) SpiInstance->CpuStrapSize) {
+    ASSERT (FALSE);
+    return EFI_INVALID_PARAMETER;
+  }
+
+  //
+  // CPU Strap Flash Address = FCPUSBA + RamAddr
+  //
+  StrapFlashAddr = SpiInstance->CpuStrapBaseAddr + SoftStrapAddr;
+
+  //
+  // Read Cpu Soft straps from using execute command
+  //
+  Status = SendSpiCmd (
+             This,
+             &gFlashRegionDescriptorGuid,
+             FlashCycleRead,
+             StrapFlashAddr,
+             ByteCount,
+             SoftStrapValue
+             );
+  return Status;
 }
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c
index 2dd80eba..68190b2b 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c
@@ -13,10 +13,11 @@
 #include <Library/BaseMemoryLib.h>
 #include <Library/SmmServicesTableLib.h>
 #include <Library/PciSegmentLib.h>
-#include <Protocol/Spi.h>
+#include <Protocol/Spi2.h>
 #include <Protocol/SmmCpu.h>
 #include <Library/SpiCommonLib.h>
 #include <PchReservedResources.h>
+#include <Library/SmmPchPrivateLib.h>
 #include <Library/PchPciBdfLib.h>
 #include <IndustryStandard/Pci30.h>
 #include <Register/PchRegs.h>
@@ -82,8 +83,8 @@ SpiExitBootServicesCallback (
       - Documented in System Management Mode Core Interface Specification .
 
   - @result
-    The SPI SMM driver produces @link _PCH_SPI_PROTOCOL PCH_SPI_PROTOCOL @endlink with GUID
-    gPchSmmSpiProtocolGuid which is different from SPI RUNTIME driver.
+    The SPI SMM driver produces @link _PCH_SPI2_PROTOCOL PCH_SPI2_PROTOCOL @endlink with GUID
+    gPchSmmSpi2ProtocolGuid which is different from SPI RUNTIME driver.
 
   - <b>Integration Check List</b>\n
     - This driver supports Descriptor Mode only.
@@ -163,11 +164,11 @@ InstallPchSpi (
   }
 
   //
-  // Install the SMM PCH_SPI_PROTOCOL interface
+  // Install the SMM PCH_SPI2_PROTOCOL interface
   //
   Status = gSmst->SmmInstallProtocolInterface (
                     &(mSpiInstance->Handle),
-                    &gPchSmmSpiProtocolGuid,
+                    &gPchSmmSpi2ProtocolGuid,
                     EFI_NATIVE_INTERFACE,
                     &(mSpiInstance->SpiProtocol)
                     );
@@ -303,6 +304,19 @@ DisableBiosWriteProtect (
     B_SPI_CFG_BC_WPD
     );
 
+  ///
+  /// the BIOS Region can only be updated by following the steps bellow:
+  ///  - Once all threads enter SMM
+  ///  - Read memory location FED30880h OR with 00000001h, place the result in EAX,
+  ///    and write data to lower 32 bits of MSR 1FEh (sample code available)
+  ///  - Set BIOSWE bit (SPI PCI Offset DCh [0]) = 1b
+  ///  - Modify BIOS Region
+  ///  - Clear BIOSWE bit (SPI PCI Offset DCh [0]) = 0b
+  ///
+  if ((PciSegmentRead8 (SpiBaseAddress + R_SPI_CFG_BC) & B_SPI_CFG_BC_EISS) != 0) {
+    PchSetInSmmSts ();
+  }
+
   return EFI_SUCCESS;
 }
 
@@ -327,6 +341,12 @@ EnableBiosWriteProtect (
     (UINT8) (~B_SPI_CFG_BC_WPD)
     );
 
+  ///
+  /// Check if EISS bit is set
+  ///
+  if (((PciSegmentRead8 (SpiBaseAddress + R_SPI_CFG_BC)) & B_SPI_CFG_BC_EISS) == B_SPI_CFG_BC_EISS) {
+    PchClearInSmmSts ();
+  }
 }
 
 /**
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf
index 78913423..445f4af8 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf
@@ -24,19 +24,20 @@ UefiBootServicesTableLib
 BaseLib
 SmmServicesTableLib
 SpiCommonLib
+SmmPchPrivateLib
 PchPciBdfLib
 
 [Packages]
 MdePkg/MdePkg.dec
 AlderlakeSiliconPkg/SiPkg.dec
-
+IntelSiliconPkg/IntelSiliconPkg.dec
 
 [Sources]
 Spi.c
 
 
 [Protocols]
-gPchSmmSpiProtocolGuid                ## PRODUCES
+gPchSmmSpi2ProtocolGuid                ## PRODUCES
 gEfiSmmCpuProtocolGuid                ## CONSUMES
 gEdkiiSmmExitBootServicesProtocolGuid ## CONSUMES
 
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h b/Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h
new file mode 100644
index 00000000..63857863
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h
@@ -0,0 +1,27 @@
+/** @file
+  Header file for private PCH SMM Lib.
+
+  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#ifndef _SMM_PCH_PRIVATE_LIB_H_
+#define _SMM_PCH_PRIVATE_LIB_H_
+
+/**
+  Set InSmm.Sts bit
+**/
+VOID
+PchSetInSmmSts (
+  VOID
+  );
+
+/**
+  Clear InSmm.Sts bit
+**/
+VOID
+PchClearInSmmSts (
+  VOID
+  );
+
+#endif // _SMM_PCH_PRIVATE_LIB_H_
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c
new file mode 100644
index 00000000..bdb2283d
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c
@@ -0,0 +1,83 @@
+/** @file
+  PCH SMM private lib.
+
+  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Uefi/UefiBaseType.h>
+#include <Library/BaseLib.h>
+#include <Library/IoLib.h>
+#include <Library/DebugLib.h>
+#include <Library/CpuPlatformLib.h>
+#include <CpuRegs.h>
+#include <Register/CommonMsr.h>
+#include <Register/PttPtpRegs.h>
+
+
+/**
+  Set InSmm.Sts bit
+**/
+VOID
+PchSetInSmmSts (
+  VOID
+  )
+{
+  UINT32      Data32;
+
+  ///
+  /// If platform disables TXT_PTLEN strap, NL socket(s) will target abort
+  /// when trying to access LT register space below, and writes to
+  /// NL's MSR 0x1FE will GP fault. Check straps enabled first.
+  ///
+
+  Data32 = MmioRead32 (R_LT_EXISTS);
+
+  if (Data32 == 0xFFFFFFFF) {
+    return;
+  }
+  ///
+  /// Read memory location FED30880h OR with 00000001h, place the result in EAX,
+  /// and write data to lower 32 bits of MSR 1FEh (sample code available)
+  ///
+  Data32 = MmioRead32 (R_LT_UCS);
+  AsmWriteMsr32 (MSR_SPCL_CHIPSET_USAGE, Data32 | BIT0);
+  ///
+  /// Read FED30880h back to ensure the setting went through.
+  ///
+  Data32 = MmioRead32 (R_LT_UCS);
+}
+
+/**
+  Clear InSmm.Sts bit
+**/
+VOID
+PchClearInSmmSts (
+  VOID
+  )
+{
+  UINT32      Data32;
+
+  ///
+  /// If platform disables TXT_PTLEN strap, NL socket(s) will target abort
+  /// when trying to access LT register space below, and writes to
+  /// NL's MSR 0x1FE will GP fault. Check straps enabled first.
+  ///
+
+  Data32 = MmioRead32 (R_LT_EXISTS);
+  if (Data32 == 0xFFFFFFFF) {
+    return;
+  }
+
+  ///
+  /// Read memory location FED30880h AND with FFFFFFFEh, place the result in EAX,
+  /// and write data to lower 32 bits of MSR 1FEh (sample code available)
+  ///
+  Data32 = MmioRead32 (R_LT_UCS);
+  AsmWriteMsr32 (MSR_SPCL_CHIPSET_USAGE, Data32 & (UINT32) (~BIT0));
+  ///
+  /// Read FED30880h back to ensure the setting went through.
+  ///
+  Data32 = MmioRead32 (R_LT_UCS);
+}
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf
new file mode 100644
index 00000000..3c62b9b8
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf
@@ -0,0 +1,32 @@
+## @file
+#  PCH SMM private lib.
+#
+#  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+
+[Defines]
+INF_VERSION = 0x00010017
+BASE_NAME = SmmPchPrivateLib
+FILE_GUID = FE6495FB-7AA9-4A24-BF3E-4698F7BCE0EE
+VERSION_STRING = 1.0
+MODULE_TYPE = DXE_SMM_DRIVER
+LIBRARY_CLASS = SmmPchPrivateLib
+
+
+[LibraryClasses]
+BaseLib
+IoLib
+DebugLib
+CpuPlatformLib
+
+
+[Packages]
+MdePkg/MdePkg.dec
+AlderlakeSiliconPkg/SiPkg.dec
+
+
+[Sources]
+SmmPchPrivateLib.c
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc b/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc
index 37876cbf..238473c2 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc
@@ -11,6 +11,11 @@
 !include $(PLATFORM_SI_PACKAGE)/Fru/AdlCpu/DxeLib.dsc
 !include $(PLATFORM_SI_PACKAGE)/Fru/AdlPch/DxeLib.dsc
 
+#
+# Pch
+#
+ SmmPchPrivateLib|$(PLATFORM_SI_PACKAGE)/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf
+
 #
 # Common
 #
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec b/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec
index ce9cfe59..aafce7a6 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec
+++ b/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec
@@ -33,6 +33,7 @@ IpBlock/HostBridge/IncludePrivate
 
 # Cpu
 Cpu/IncludePrivate
+Pch/IncludePrivate
 
 IncludePrivate
 
@@ -355,6 +356,7 @@ PchInfoLib|Pch/Include/Library/PchInfoLib.h
 PchPcieRpLib|Include/Library/PchPcieRpLib.h
 PchPcrLib|Include/Library/PchPcrLib.h
 PchSbiAccessLib|IpBlock/P2sb/IncludePrivate/Library/PchSbiAccessLib.h
+SmmPchPrivateLib|Pch/IncludePrivate/Library/SmmPchPrivateLib.h
 PchPciBdfLib|Pch/Include/Library/PchPciBdfLib.h
 PchRasLib|Pch/Include/Library/PchRasLib.h
 PchRtcLib|Pch/Include/Library/PchRtcLib.h
@@ -394,7 +396,7 @@ OcPlatformLib|Include/Library/OcPlatformLib.h
 PeiSpsPreMemPolicyLib|Include/Library/PeiSpsPreMemPolicyLib.h
 PmcLib|Include/Library/PmcLib.h
 PmcSsramLib|Include/Library/PmcSsramLib.h
-SpiLib|Include/Library/SpiLib.h
+SpiAccessLib|Include/Library/SpiAccessLib.h
 SpsDxeLib|Include/Library/SpsDxeLib.h
 SpsGetDxeConfigBlockLib|Include/Library/SpsGetDxeConfigBlock.h
 MeGetPeiConfigBlock|Include/Library/MeGetConfigBlock.h
-- 
2.26.2.windows.1



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^ permalink raw reply related	[flat|nested] 6+ messages in thread

* Re: [edk2-devel] [PATCH] AlderlakeSiliconPkg: Update for SPI2 Protocol and Identify flash regions by GUID
  2024-02-02  6:32 dorax.hsueh
@ 2024-04-08 22:34 ` Nate DeSimone
  2024-04-08 22:37   ` Nate DeSimone
  0 siblings, 1 reply; 6+ messages in thread
From: Nate DeSimone @ 2024-04-08 22:34 UTC (permalink / raw)
  To: devel@edk2.groups.io, Hsueh, DoraX
  Cc: Chaganty, Rangasai V, Chuang, Rosen, Kasbekar, Saloni,
	Tang, Haoyu

Reviewed-by: Nate DeSimone <nathaniel.l.desimone@intel.com>

> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of
> dorax.hsueh@intel.com
> Sent: Thursday, February 1, 2024 10:32 PM
> To: devel@edk2.groups.io
> Cc: Hsueh, DoraX <dorax.hsueh@intel.com>; Chaganty, Rangasai V
> <rangasai.v.chaganty@intel.com>; Chuang, Rosen <rosen.chuang@intel.com>;
> Kasbekar, Saloni <saloni.kasbekar@intel.com>; Tang, Haoyu
> <haoyu.tang@intel.com>
> Subject: [edk2-devel] [PATCH] AlderlakeSiliconPkg: Update for SPI2 Protocol
> and Identify flash regions by GUID
> 
> From: DoraX Hsueh <dorax.hsueh@intel.com>
> 
> https://bugzilla.tianocore.org/show_bug.cgi?id=4664
> 
> 1. Updates references to the "PCH_SPI_PROTOCOL" to instead refer to
> "PCH_SPI2_PROTOCOL".
> 2. Updates the library to identify flash regions by GUID and internally
> map the GUID entries to values specific to AlderlakeSiliconPkg.
> 3. Libs/modules that need to reference IntelSiliconPkg are updated.
> 4. Add gUsbConfigGuid to fix USB not working issue in OS.
> 
> Cc: Sai Chaganty <rangasai.v.chaganty@intel.com>
> Cc: Rosen Chuang <rosen.chuang@intel.com>
> Cc: Saloni Kasbekar <saloni.kasbekar@intel.com>
> Cc: Haoyu Tang <haoyu.tang@intel.com>
> Signed-off-by: DoraX Hsueh <dorax.hsueh@intel.com>
> ---
>  .../Cpu/Include/Register/CommonMsr.h          |   4 +
>  .../Fru/AdlPch/CommonLib.dsc                  |   2 +-
>  .../AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc |   2 -
>  .../Include/Library/SpiAccessLib.h            |  44 ++
>  .../Include/Register/PttPtpRegs.h             |  26 +
>  .../Include/Register/TcoRegs.h                |   1 +
>  .../Spi/IncludePrivate/Library/SpiCommonLib.h |  60 +--
>  .../Spi/IncludePrivate/Register/SpiRegs.h     |   8 +-
>  .../PeiDxeSmmSpiAccessLib.inf                 |  33 ++
>  .../PeiDxeSmmSpiAccessLib/SpiAccessLib.c      |  75 +++
>  .../IpBlock/Spi/Library/PeiSpiLib/PchSpi.c    |   2 +-
>  .../Spi/Library/PeiSpiLib/PeiSpiLib.inf       |   2 +-
>  .../BaseSpiCommonLib/BaseSpiCommonLib.inf     |  19 +-
>  .../BaseSpiCommonLib/SpiCommon.c              | 491 ++++++++++++------
>  .../AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c |  30 +-
>  .../IpBlock/Spi/Smm/SpiSmm.inf                |   5 +-
>  .../IncludePrivate/Library/SmmPchPrivateLib.h |  27 +
>  .../SmmPchPrivateLib/SmmPchPrivateLib.c       |  61 +++
>  .../SmmPchPrivateLib/SmmPchPrivateLib.inf     |  32 ++
>  .../Product/Alderlake/SiPkgDxeLib.dsc         |   5 +
>  Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec   |   4 +-
>  21 files changed, 733 insertions(+), 200 deletions(-)
>  create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h
>  create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h
>  create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
>  create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c
>  create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h
>  create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c
>  create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf
> 
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h b/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h
> index caa0e67b..44a476c0 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h
> @@ -56,5 +56,9 @@ typedef union {
>  
>  } MSR_CORE_THREAD_COUNT_REGISTER;
>  
> +/**
> +  Special Chipset Usage MSR
> +**/
> +#define MSR_SPCL_CHIPSET_USAGE 0x000001FE
>  
>  #endif /* _COMMONMSR_h */
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc
> index 3f508f83..ee5800a9 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc
> @@ -11,7 +11,7 @@
>  
>    EspiLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Espi/Library/PeiDxeSmmEspiLib/PeiDxeSmmEspiLib.inf
>  
> -
> +  SpiAccessLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
>    PmcLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Pmc/Library/PeiDxeSmmPmcLib/PeiDxeSmmPmcLib.inf
>    PmcPrivateLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Pmc/LibraryPrivate/PeiDxeSmmPmcPrivateLib/PeiDxeSmmPmcPrivateLib.inf
>    SpiCommonLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc
> index ebe2bbfd..cbaf8e37 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc
> @@ -5,8 +5,6 @@
>  #   SPDX-License-Identifier: BSD-2-Clause-Patent
>  ##
>  
> -  SpiLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
> -
>    GpioHelpersLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Gpio/LibraryPrivate/PeiGpioHelpersLib/PeiGpioHelpersLib.inf
>  
>  
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h b/Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h
> new file mode 100644
> index 00000000..6e7f48fe
> --- /dev/null
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h
> @@ -0,0 +1,44 @@
> +/** @file
> +  SPI library header for abstraction of SPI HW registers accesses
> +
> +  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
> +  SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +#ifndef _SPI_ACCESS_LIB_H_
> +#define _SPI_ACCESS_LIB_H_
> +
> +
> +/**
> +  Returns SPI BAR0 value
> +
> +  @retval  UINT32  PCH SPI BAR0 value
> +**/
> +UINT32
> +SpiGetBar0 (
> +  VOID
> +  );
> +
> +/**
> +  Checks if PCH SPI Controler is present and available
> +
> +  @retval TRUE    PCH SPI controller is avaialable
> +  @retval FALSE   PCH SPI controller is not available
> +**/
> +BOOLEAN
> +SpiIsControllerAvailable (
> +  VOID
> +  );
> +
> +/**
> +  Checks if Device Attached Flash (DAF) mode is active
> +
> +  @retval TRUE    SAF mode is active
> +  @retval FALSE   SAF mode is not active
> +**/
> +BOOLEAN
> +SpiIsSafModeActive (
> +  VOID
> +  );
> +
> +#endif // _SPI_ACCESS_LIB_H_
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h b/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h
> new file mode 100644
> index 00000000..df9905a0
> --- /dev/null
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h
> @@ -0,0 +1,26 @@
> +/** @file
> +  Register definitions for PTT HCI (Platform Trust Technology - Host Controller Interface).
> +
> +  Conventions:
> +
> +  - Prefixes:
> +    Definitions beginning with "R_" are registers
> +    Definitions beginning with "B_" are bits within registers
> +    Definitions beginning with "V_" are meaningful values of bits within the registers
> +    Definitions beginning with "S_" are register sizes
> +    Definitions beginning with "N_" are the bit position
> +
> +  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
> +  SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +#ifndef _PTT_HCI_REGS_H_
> +#define _PTT_HCI_REGS_H_
> +
> +///
> +/// LT public space registers
> +///
> +#define R_LT_UCS                           0xFED30880
> +
> +
> +#endif
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/TcoRegs.h b/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/TcoRegs.h
> index c3afcd50..081cf896 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/TcoRegs.h
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/TcoRegs.h
> @@ -62,6 +62,7 @@
>  
>  #define R_TCO_IO_TCO1_CNT                            0x08
>  #define S_TCO_IO_TCO1_CNT                            2
> +#define B_TCO_IO_TCO1_CNT_TMR_HLT                    BIT11
>  #define N_TCO_IO_TCO1_CNT_NMI2SMI_EN                 9
>  
>  #define R_TCO_IO_TCO2_CNT                            0x0A
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h
> index e13718c9..dc663198 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h
> @@ -7,7 +7,7 @@
>  #ifndef _SPI_COMMON_LIB_H_
>  #define _SPI_COMMON_LIB_H_
>  
> -#include <Protocol/Spi.h>
> +#include <Protocol/Spi2.h>
>  
>  //
>  // Maximum time allowed while waiting the SPI cycle to complete
> @@ -49,7 +49,7 @@ typedef enum {
>  typedef struct {
>    UINT32                Signature;
>    EFI_HANDLE            Handle;
> -  PCH_SPI_PROTOCOL      SpiProtocol;
> +  PCH_SPI2_PROTOCOL     SpiProtocol;
>    UINT16                PchAcpiBase;
>    UINT64                PchSpiBase;
>    UINT8                 ReadPermission;
> @@ -157,8 +157,8 @@ IsSpiControllerSaveRestoreEnabled (
>  /**
>    Read data from the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> -  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
> +  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
>    @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
>    @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
>    @param[out] Buffer              The Pointer to caller-allocated buffer containing the dada received.
> @@ -171,8 +171,8 @@ IsSpiControllerSaveRestoreEnabled (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashRead (
> -  IN     PCH_SPI_PROTOCOL   *This,
> -  IN     FLASH_REGION_TYPE  FlashRegionType,
> +  IN     PCH_SPI2_PROTOCOL  *This,
> +  IN     EFI_GUID           *FlashRegionGuid,
>    IN     UINT32             Address,
>    IN     UINT32             ByteCount,
>    OUT    UINT8              *Buffer
> @@ -181,8 +181,8 @@ SpiProtocolFlashRead (
>  /**
>    Write data to the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> -  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
> +  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
>    @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
>    @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
>    @param[in] Buffer               Pointer to caller-allocated buffer containing the data sent during the SPI cycle.
> @@ -194,8 +194,8 @@ SpiProtocolFlashRead (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashWrite (
> -  IN     PCH_SPI_PROTOCOL   *This,
> -  IN     FLASH_REGION_TYPE  FlashRegionType,
> +  IN     PCH_SPI2_PROTOCOL  *This,
> +  IN     EFI_GUID           *FlashRegionGuid,
>    IN     UINT32             Address,
>    IN     UINT32             ByteCount,
>    IN     UINT8              *Buffer
> @@ -204,8 +204,8 @@ SpiProtocolFlashWrite (
>  /**
>    Erase some area on the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> -  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
> +  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
>    @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
>    @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
>  
> @@ -216,8 +216,8 @@ SpiProtocolFlashWrite (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashErase (
> -  IN     PCH_SPI_PROTOCOL   *This,
> -  IN     FLASH_REGION_TYPE  FlashRegionType,
> +  IN     PCH_SPI2_PROTOCOL  *This,
> +  IN     EFI_GUID           *FlashRegionGuid,
>    IN     UINT32             Address,
>    IN     UINT32             ByteCount
>    );
> @@ -225,7 +225,7 @@ SpiProtocolFlashErase (
>  /**
>    Read SFDP data from the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] ComponentNumber      The Componen Number for chip select
>    @param[in] Address              The starting byte address for SFDP data read.
>    @param[in] ByteCount            Number of bytes in SFDP data portion of the SPI cycle
> @@ -239,7 +239,7 @@ SpiProtocolFlashErase (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashReadSfdp (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT8              ComponentNumber,
>    IN     UINT32             Address,
>    IN     UINT32             ByteCount,
> @@ -249,7 +249,7 @@ SpiProtocolFlashReadSfdp (
>  /**
>    Read Jedec Id from the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] ComponentNumber      The Componen Number for chip select
>    @param[in] ByteCount            Number of bytes in JedecId data portion of the SPI cycle, the data size is 3 typically
>    @param[out] JedecId             The Pointer to caller-allocated buffer containing JEDEC ID received
> @@ -262,7 +262,7 @@ SpiProtocolFlashReadSfdp (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashReadJedecId (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT8              ComponentNumber,
>    IN     UINT32             ByteCount,
>    OUT    UINT8              *JedecId
> @@ -271,7 +271,7 @@ SpiProtocolFlashReadJedecId (
>  /**
>    Write the status register in the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
>    @param[in] StatusValue          The Pointer to caller-allocated buffer containing the value of Status register writing
>  
> @@ -282,7 +282,7 @@ SpiProtocolFlashReadJedecId (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashWriteStatus (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT32             ByteCount,
>    IN     UINT8              *StatusValue
>    );
> @@ -290,7 +290,7 @@ SpiProtocolFlashWriteStatus (
>  /**
>    Read status register in the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
>    @param[out] StatusValue         The Pointer to caller-allocated buffer containing the value of Status register received.
>  
> @@ -301,7 +301,7 @@ SpiProtocolFlashWriteStatus (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashReadStatus (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT32             ByteCount,
>    OUT    UINT8              *StatusValue
>    );
> @@ -309,8 +309,8 @@ SpiProtocolFlashReadStatus (
>  /**
>    Get the SPI region base and size, based on the enum type
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> -  @param[in] FlashRegionType      The Flash Region type for for the base address which is listed in the Descriptor.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
> +  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
>    @param[out] BaseAddress         The Flash Linear Address for the Region 'n' Base
>    @param[out] RegionSize          The size for the Region 'n'
>  
> @@ -321,8 +321,8 @@ SpiProtocolFlashReadStatus (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolGetRegionAddress (
> -  IN     PCH_SPI_PROTOCOL   *This,
> -  IN     FLASH_REGION_TYPE  FlashRegionType,
> +  IN     PCH_SPI2_PROTOCOL  *This,
> +  IN     EFI_GUID           *FlashRegionGuid,
>    OUT    UINT32             *BaseAddress,
>    OUT    UINT32             *RegionSize
>    );
> @@ -330,7 +330,7 @@ SpiProtocolGetRegionAddress (
>  /**
>    Read PCH Soft Strap Values
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] SoftStrapAddr        PCH Soft Strap address offset from FPSBA.
>    @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle
>    @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing PCH Soft Strap Value.
> @@ -344,7 +344,7 @@ SpiProtocolGetRegionAddress (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolReadPchSoftStrap (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT32             SoftStrapAddr,
>    IN     UINT32             ByteCount,
>    OUT    VOID               *SoftStrapValue
> @@ -353,7 +353,7 @@ SpiProtocolReadPchSoftStrap (
>  /**
>    Read CPU Soft Strap Values
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] SoftStrapAddr        CPU Soft Strap address offset from FCPUSBA.
>    @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle.
>    @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing CPU Soft Strap Value.
> @@ -367,7 +367,7 @@ SpiProtocolReadPchSoftStrap (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolReadCpuSoftStrap (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT32             SoftStrapAddr,
>    IN     UINT32             ByteCount,
>    OUT    VOID               *SoftStrapValue
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h
> index 5cb47911..57e269e1 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h
> @@ -62,6 +62,7 @@
>  //
>  // BIOS Flash Program Registers (based on SPI_BAR0)
>  //
> +#define R_SPI_MEM_BFPR                      0x00                          ///< BIOS Flash Primary Region Register(32bits), which is RO and contains the same value from FREG1
>  #define R_SPI_MEM_HSFSC                     0x04                          ///< Hardware Sequencing Flash Status and Control Register(32bits)
>  #define B_SPI_MEM_HSFSC_FDBC_MASK           0x3F000000                    ///< Flash Data Byte Count ( <= 64), Count = (Value in this field) + 1.
>  #define N_SPI_MEM_HSFSC_FDBC                24
> @@ -78,12 +79,8 @@
>  #define B_SPI_MEM_HSFSC_CYCLE_FGO           BIT16                         ///< Flash Cycle Go.
>  #define B_SPI_MEM_HSFSC_FDV                 BIT14                         ///< Flash Descriptor Valid, once valid software can use hareware sequencing regs
>  #define B_SPI_MEM_HSFSC_WRSDIS              BIT11                         ///< Write Status Disable
> -#define B_SPI_MEM_HSFSC_SAF_CE              BIT8                          ///< SAF ctype error
> -#define B_SPI_MEM_HSFSC_SAF_LE              BIT6                          ///< SAF link error
> +#define B_SPI_MEM_HSFSC_SAF_MODE_ACTIVE     BIT7                          ///< Indicates flash is attached either directly to the PCH via the SPI bus or EC/BMC
>  #define B_SPI_MEM_HSFSC_SCIP                BIT5                          ///< SPI cycle in progress
> -#define B_SPI_MEM_HSFSC_SAF_DLE             BIT4                          ///< SAF Data length error
> -#define B_SPI_MEM_HSFSC_SAF_ERROR           BIT3                          ///< SAF Error
> -#define B_SPI_MEM_HSFSC_AEL                 BIT2                          ///< Access Error Log
>  #define B_SPI_MEM_HSFSC_FCERR               BIT1                          ///< Flash Cycle Error
>  #define B_SPI_MEM_HSFSC_FDONE               BIT0                          ///< Flash Cycle Done
>  #define R_SPI_MEM_FADDR                     0x08                          ///< SPI Flash Address
> @@ -113,4 +110,5 @@
>  #define B_SPI_MEM_SFDPX_VSCCX_EO_64K        BIT29                         ///< 64k Erase valid (EO_64k_valid)
>  #define R_SPI_MEM_SFDP1_VSCC1               0xC8                          ///< Vendor Specific Component Capabilities Register(32 bits)
>  
> +
>  #endif
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
> new file mode 100644
> index 00000000..444c6b34
> --- /dev/null
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
> @@ -0,0 +1,33 @@
> +## @file
> +# Component description file for PCH SPI access library
> +#
> +#  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
> +#  SPDX-License-Identifier: BSD-2-Clause-Patent
> +#
> +##
> +
> +
> +[Defines]
> +INF_VERSION     = 0x00010017
> +BASE_NAME       = PeiDxeSmmSpiAccessLib
> +FILE_GUID       = A6D4C05A-F6CB-46D5-4BA1-8C47B139DCA6
> +VERSION_STRING  = 1.0
> +MODULE_TYPE     = BASE
> +LIBRARY_CLASS   = SpiAccessLib
> +
> +
> +[LibraryClasses]
> +BaseLib
> +IoLib
> +DebugLib
> +PciSegmentLib
> +PchPciBdfLib
> +PchPcrLib
> +
> +[Packages]
> +MdePkg/MdePkg.dec
> +AlderlakeSiliconPkg/SiPkg.dec
> +
> +
> +[Sources]
> +SpiAccessLib.c
> \ No newline at end of file
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c
> new file mode 100644
> index 00000000..da8475ea
> --- /dev/null
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c
> @@ -0,0 +1,75 @@
> +/** @file
> +  SPI library for abstraction of SPI HW registers accesses
> +
> +  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
> +  SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#include <Base.h>
> +#include <Uefi/UefiBaseType.h>
> +#include <IndustryStandard/Pci22.h>
> +#include <Library/BaseLib.h>
> +#include <Library/IoLib.h>
> +#include <Library/DebugLib.h>
> +#include <Library/PciSegmentLib.h>
> +#include <Library/SpiAccessLib.h>
> +#include <Library/PchPciBdfLib.h>
> +#include <Register/SpiRegs.h>
> +#include <Register/FlashRegs.h>
> +#include <Register/PchRegs.h>
> +#include <Register/PchDmiRegs.h>
> +
> +
> +/**
> +  Checks if PCH SPI Controler is present and available
> +
> +  @retval TRUE    PCH SPI controller is avaialable
> +  @retval FALSE   PCH SPI controller is not available
> +**/
> +BOOLEAN
> +SpiIsControllerAvailable (
> +  VOID
> +  )
> +{
> +  //
> +  // Checks for SPI controller
> +  //
> +  return (PciSegmentRead16 (SpiPciCfgBase () + PCI_VENDOR_ID_OFFSET) != 0xFFFF);
> +}
> +
> +/**
> +  Returns PCH SPI BAR0 value
> +
> +  @retval  UINT32  PCH SPI BAR0 value
> +**/
> +UINT32
> +SpiGetBar0 (
> +  VOID
> +  )
> +{
> +  UINT32  SpiBar0;
> +
> +  ASSERT (SpiIsControllerAvailable ());
> +  SpiBar0 = PciSegmentRead32 (SpiPciCfgBase () + R_SPI_CFG_BAR0) & ~B_SPI_CFG_BAR0_MASK;
> +  ASSERT (SpiBar0 != 0);
> +
> +  return SpiBar0;
> +}
> +
> +/**
> +  Checks if device Attached Flash (DAF) mode is active
> +
> +  @retval TRUE    SAF mode is active
> +  @retval FALSE   SAF mode is not active
> +**/
> +BOOLEAN
> +SpiIsSafModeActive (
> +  VOID
> +  )
> +{
> +  UINT32 SpiBar0;
> +  SpiBar0 = SpiGetBar0 ();
> +
> +  return !!(MmioRead32 (SpiBar0 + R_SPI_MEM_HSFSC) & B_SPI_MEM_HSFSC_SAF_MODE_ACTIVE);
> +}
> \ No newline at end of file
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c
> index aaf4e179..68031b4a 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c
> @@ -9,7 +9,7 @@
>  #include <Library/MemoryAllocationLib.h>
>  #include <Library/PeiServicesLib.h>
>  #include <Library/PciSegmentLib.h>
> -#include <Ppi/Spi.h>
> +#include <Ppi/Spi2.h>
>  #include <Library/SpiCommonLib.h>
>  #include <PchReservedResources.h>
>  #include <IndustryStandard/Pci30.h>
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
> index c3bf6d02..e720eed2 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
> @@ -30,7 +30,7 @@ PchPciBdfLib
>  [Packages]
>  MdePkg/MdePkg.dec
>  AlderlakeSiliconPkg/SiPkg.dec
> -
> +IntelSiliconPkg/IntelSiliconPkg.dec
>  
>  [Sources]
>  PchSpi.c
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
> index 25ab9194..b38e149d 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
> @@ -19,11 +19,28 @@
>  [Packages]
>    MdePkg/MdePkg.dec
>    AlderlakeSiliconPkg/SiPkg.dec
> +  IntelSiliconPkg/IntelSiliconPkg.dec
>  
>  [LibraryClasses]
>    IoLib
>    DebugLib
>    PmcLib
>    PchPciBdfLib
> +  SpiAccessLib
>  
> -[Pcd]
> +[Guids]
> +  gFlashRegionDescriptorGuid
> +  gFlashRegionBiosGuid
> +  gFlashRegionMeGuid
> +  gFlashRegionGbeGuid
> +  gFlashRegionPlatformDataGuid
> +  gFlashRegionDerGuid
> +  gFlashRegionSecondaryBiosGuid
> +  gFlashRegionMicrocodePatchGuid
> +  gFlashRegionEcGuid
> +  gFlashRegionDeviceExpansionGuid
> +  gFlashRegionIeGuid
> +  gFlashRegion10GbeAGuid
> +  gFlashRegion10GbeBGuid
> +  gFlashRegionAllGuid
> +  gFlashRegionMaxGuid
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c
> index ab51521f..8d1c4785 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c
> @@ -12,17 +12,137 @@
>  #include <IndustryStandard/Pci30.h>
>  #include <Library/PmcLib.h>
>  #include <Library/PciSegmentLib.h>
> -#include <Protocol/Spi.h>
> +#include <Protocol/Spi2.h>
>  #include <Library/SpiCommonLib.h>
>  #include <Register/PchRegs.h>
>  #include <Register/SpiRegs.h>
>  #include <Register/FlashRegs.h>
>  #include <Register/PmcRegs.h>
>  #include <Library/PchPciBdfLib.h>
> +#include <Library/SpiAccessLib.h>
>  
>  #define DEFAULT_CPU_STRAP_BASE_OFFSET 0x300 // Default CPU Straps base offset
>  #define B_SPI_MEM_HSFSC_SAVE_MASK     (B_SPI_MEM_HSFSC_FDBC_MASK | B_SPI_MEM_HSFSC_CYCLE_MASK)
>  
> +typedef enum {
> +  FlashRegionDescriptor,
> +  FlashRegionBios,
> +  FlashRegionMe,
> +  FlashRegionGbe,
> +  FlashRegionPlatformData,
> +  FlashRegionDer,
> +  FlashRegionSecondaryBios,
> +  FlashRegionMicrocodePatch,
> +  FlashRegionEc,
> +  FlashRegionDeviceExpansion,
> +  FlashRegionIe,
> +  FlashRegion10GbeA,
> +  FlashRegion10GbeB,
> +  FlashRegionAll = 16,
> +  FlashRegionMax
> +} FLASH_REGION_TYPE;
> +
> +typedef struct {
> +  EFI_GUID            *Guid;
> +  FLASH_REGION_TYPE   Type;
> +} FLASH_REGION_MAPPING;
> +
> +FLASH_REGION_MAPPING mFlashRegionTypes[] = {
> +  {
> +    &gFlashRegionDescriptorGuid,
> +    FlashRegionDescriptor
> +  },
> +  {
> +    &gFlashRegionBiosGuid,
> +    FlashRegionBios
> +  },
> +  {
> +    &gFlashRegionMeGuid,
> +    FlashRegionMe
> +  },
> +  {
> +    &gFlashRegionGbeGuid,
> +    FlashRegionGbe
> +  },
> +  {
> +    &gFlashRegionPlatformDataGuid,
> +    FlashRegionPlatformData
> +  },
> +  {
> +    &gFlashRegionDerGuid,
> +    FlashRegionDer
> +  },
> +  {
> +    &gFlashRegionSecondaryBiosGuid,
> +    FlashRegionSecondaryBios
> +  },
> +  {
> +    &gFlashRegionMicrocodePatchGuid,
> +    FlashRegionMicrocodePatch
> +  },
> +  {
> +    &gFlashRegionEcGuid,
> +    FlashRegionEc
> +  },
> +  {
> +    &gFlashRegionDeviceExpansionGuid,
> +    FlashRegionDeviceExpansion
> +  },
> +  {
> +    &gFlashRegionIeGuid,
> +    FlashRegionIe
> +  },
> +  {
> +    &gFlashRegion10GbeAGuid,
> +    FlashRegion10GbeA
> +  },
> +  {
> +    &gFlashRegion10GbeBGuid,
> +    FlashRegion10GbeB
> +  },
> +  {
> +    &gFlashRegionAllGuid,
> +    FlashRegionAll
> +  },
> +  {
> +    &gFlashRegionMaxGuid,
> +    FlashRegionMax
> +  }
> +};
> +
> +/**
> +  Returns the type of a flash region given its GUID.
> +
> +  @param[in]    FlashRegionGuid   Pointer to the flash region GUID.
> +  @param[out]   FlashRegionType   Pointer to a buffer that will be set to the flash region type value.
> +
> +  @retval       EFI_SUCCESS             The flash region type was found for the given flash region GUID.
> +  @retval       EFI_INVALID_PARAMETER   A pointer argument passed to the function is NULL.
> +  @retval       EFI_NOT_FOUND           The flash region type was not found for the given flash region GUID.
> +
> +**/
> +EFI_STATUS
> +GetFlashRegionType (
> +  IN     EFI_GUID           *FlashRegionGuid,
> +  OUT    FLASH_REGION_TYPE  *FlashRegionType
> +  )
> +{
> +  UINTN   Index;
> +
> +  if (FlashRegionGuid == NULL || FlashRegionType == NULL) {
> +    return EFI_INVALID_PARAMETER;
> +  }
> +
> +  for (Index = 0; Index < ARRAY_SIZE (mFlashRegionTypes); Index++) {
> +    if (CompareGuid (mFlashRegionTypes[Index].Guid, FlashRegionGuid)) {
> +      *FlashRegionType = mFlashRegionTypes[Index].Type;
> +      return EFI_SUCCESS;
> +    }
> +  }
> +
> +  return EFI_NOT_FOUND;
> +}
> +
>  /**
>    Initialize an SPI protocol instance.
>  
> @@ -184,7 +304,7 @@ SpiProtocolConstructor (
>    // If CPU Strap base address is different than 0x300 need to add MDTBA value for final location
>    //
>    if (SpiInstance->CpuStrapBaseAddr != DEFAULT_CPU_STRAP_BASE_OFFSET) {
> -    Status = SpiProtocolFlashRead (&(SpiInstance->SpiProtocol), FlashRegionAll, R_FLASH_UMAP1, sizeof (Data32), (UINT8 *) (&Data32));
> +    Status = SpiProtocolFlashRead (&(SpiInstance->SpiProtocol), &gFlashRegionAllGuid, R_FLASH_UMAP1, sizeof (Data32), (UINT8 *) (&Data32));
>      ASSERT_EFI_ERROR (Status);
>      Mdtba = (UINT16)(((Data32 & B_FLASH_UMAP1_MDTBA) >> N_FLASH_UMAP1_MDTBA) << N_FLASH_UMAP1_MDTBA_REPR);
>      DEBUG ((DEBUG_INFO, "Mdtba : %0x\n", Mdtba));
> @@ -279,7 +399,7 @@ PchPmTimerStallRuntimeSafe (
>  STATIC
>  BOOLEAN
>  WaitForSpiCycleComplete (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINTN              PchSpiBar0,
>    IN     BOOLEAN            ErrorCheck
>    )
> @@ -317,7 +437,7 @@ WaitForSpiCycleComplete (
>    This function waits for a pending SPI transaction to complete without clearing
>    status fields
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] PchSpiBar0           SPI MMIO address
>  
>    @retval TRUE                    SPI cycle completed on the interface.
> @@ -327,7 +447,7 @@ WaitForSpiCycleComplete (
>  BOOLEAN
>  STATIC
>  WaitForScipNoClear (
> -  IN      PCH_SPI_PROTOCOL    *This,
> +  IN      PCH_SPI2_PROTOCOL   *This,
>    IN      UINTN               PchSpiBar0
>    )
>  {
> @@ -352,87 +472,11 @@ WaitForScipNoClear (
>    return FALSE;
>  }
>  
> -/**
> -  This function sets the FDONE and optionally FCERR bits in the HSFS_CTL register
> -
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> -  @param[in] PchSpiBar0           SPI MMIO address
> -  @param[in] SetErrorBit          Set to TRUE to set the FCERR bit
> -
> -**/
> -VOID
> -STATIC
> -SetHsfscFdone (
> -  IN      PCH_SPI_PROTOCOL    *This,
> -  IN      UINTN               PchSpiBar0,
> -  IN      BOOLEAN             SetFcErrorBit
> -  )
> -{
> -  EFI_STATUS    Status;
> -  UINT32        HardwareSpiAddr;
> -  UINT32        FlashRegionSize;
> -  UINT32        Index;
> -  UINT8         DataCount;
> -
> -  Status = SpiProtocolGetRegionAddress (This, FlashRegionBios, &HardwareSpiAddr, &FlashRegionSize);
> -  if (EFI_ERROR (Status)) {
> -    return;
> -  }
> -
> -  //
> -  // Clear FDONE and FCERR
> -  //
> -  MmioWrite8 (PchSpiBar0 + R_SPI_MEM_HSFSC, B_SPI_MEM_HSFSC_FCERR | B_SPI_MEM_HSFSC_FDONE);
> -
> -  //
> -  // Fill data buffer
> -  //
> -  if (SetFcErrorBit) {
> -    for (Index = 0; Index < 64; Index += sizeof (UINT32)) {
> -      MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FDATA00 + Index, 0xFFFFFFFF);
> -    }
> -  }
> -
> -  //
> -  // Set the Flash Address
> -  //
> -  MmioWrite32 (
> -    (PchSpiBar0 + R_SPI_MEM_FADDR),
> -    (UINT32) (HardwareSpiAddr & B_SPI_MEM_FADDR_MASK)
> -    );
> -  //
> -  // Set Data count, Flash cycle, and Set Go bit to start a cycle
> -  //
> -  if (SetFcErrorBit) {
> -    DataCount = 0x3F;
> -  } else {
> -    DataCount = 0;
> -  }
> -  MmioAndThenOr32 (
> -    PchSpiBar0 + R_SPI_MEM_HSFSC,
> -    (UINT32) (~(B_SPI_MEM_HSFSC_FDBC_MASK | B_SPI_MEM_HSFSC_CYCLE_MASK)),
> -    (UINT32) (((DataCount << N_SPI_MEM_HSFSC_FDBC) & B_SPI_MEM_HSFSC_FDBC_MASK) |
> -              (V_SPI_MEM_HSFSC_CYCLE_READ << N_SPI_MEM_HSFSC_CYCLE)             |
> -              B_SPI_MEM_HSFSC_CYCLE_FGO)
> -    );
> -
> -  if (SetFcErrorBit) {
> -    //
> -    // Intentionally write to FDATA while a cycle is in progress to generate an error
> -    //
> -    for (Index = 0; Index < 64; Index += sizeof (UINT32)) {
> -      MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FDATA00 + Index, 0x0);
> -    }
> -  }
> -
> -  WaitForScipNoClear (This, PchSpiBar0);
> -}
> -
>  /**
>    This function sends the programmed SPI command to the device.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> -  @param[in] SpiRegionType        The SPI Region type for flash cycle which is listed in the Descriptor
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
> +  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
>    @param[in] FlashCycleType       The Flash SPI cycle type list in HSFC (Hardware Sequencing Flash Control Register) register
>    @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
>    @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
> @@ -446,8 +490,8 @@ SetHsfscFdone (
>  STATIC
>  EFI_STATUS
>  SendSpiCmd (
> -  IN     PCH_SPI_PROTOCOL   *This,
> -  IN     FLASH_REGION_TYPE  FlashRegionType,
> +  IN     PCH_SPI2_PROTOCOL  *This,
> +  IN     EFI_GUID           *FlashRegionGuid,
>    IN     FLASH_CYCLE_TYPE   FlashCycleType,
>    IN     UINT32             Address,
>    IN     UINT32             ByteCount,
> @@ -564,7 +608,7 @@ SendSpiCmd (
>      }
>    }
>  
> -  Status = SpiProtocolGetRegionAddress (This, FlashRegionType, &HardwareSpiAddr, &FlashRegionSize);
> +  Status = SpiProtocolGetRegionAddress (This, FlashRegionGuid, &HardwareSpiAddr, &FlashRegionSize);
>    if (EFI_ERROR (Status)) {
>      goto SendSpiCmdEnd;
>    }
> @@ -751,31 +795,6 @@ SendSpiCmd (
>    } while (ByteCount > 0);
>  
>  SendSpiCmdEnd:
> -  //
> -  // Restore SPI controller state
> -  //
> -  if (RestoreState) {
> -    if (HsfscFdoneSave) {
> -      SetHsfscFdone (This, PchSpiBar0, HsfscFcerrSave);
> -    }
> -    MmioAndThenOr32 (
> -      PchSpiBar0 + R_SPI_MEM_HSFSC,
> -      (UINT32)  ~(B_SPI_MEM_HSFSC_SAVE_MASK |
> -                  B_SPI_MEM_HSFSC_SAF_CE    |   // This bit clears when set to 1, ensure 0 is written
> -                  B_SPI_MEM_HSFSC_SAF_LE    |   // This bit clears when set to 1, ensure 0 is written
> -                  B_SPI_MEM_HSFSC_SAF_DLE   |   // This bit clears when set to 1, ensure 0 is written
> -                  B_SPI_MEM_HSFSC_SAF_ERROR |   // This bit clears when set to 1, ensure 0 is written
> -                  B_SPI_MEM_HSFSC_AEL       |   // This bit clears when set to 1, ensure 0 is written
> -                  B_SPI_MEM_HSFSC_FCERR     |   // This bit clears when set to 1, ensure 0 is written
> -                  B_SPI_MEM_HSFSC_FDONE),       // This bit clears when set to 1, ensure 0 is written
> -      HsfscSave
> -      );
> -    MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FADDR, FaddrSave);
> -    for (Index = 0; Index < 64; Index += sizeof (UINT32)) {
> -      MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FDATA00 + Index, FdataSave[Index >> 2]);
> -    }
> -  }
> -
>    //
>    // Restore the settings for SPI Prefetching and Caching and enable BIOS Write Protect
>    //
> @@ -801,8 +820,8 @@ SendSpiCmdEnd:
>  /**
>    Read data from the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> -  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
> +  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
>    @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
>    @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
>    @param[out] Buffer              The Pointer to caller-allocated buffer containing the dada received.
> @@ -815,8 +834,8 @@ SendSpiCmdEnd:
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashRead (
> -  IN     PCH_SPI_PROTOCOL   *This,
> -  IN     FLASH_REGION_TYPE  FlashRegionType,
> +  IN     PCH_SPI2_PROTOCOL  *This,
> +  IN     EFI_GUID           *FlashRegionGuid,
>    IN     UINT32             Address,
>    IN     UINT32             ByteCount,
>    OUT    UINT8              *Buffer
> @@ -829,7 +848,7 @@ SpiProtocolFlashRead (
>    //
>    Status = SendSpiCmd (
>               This,
> -             FlashRegionType,
> +             FlashRegionGuid,
>               FlashCycleRead,
>               Address,
>               ByteCount,
> @@ -841,8 +860,8 @@ SpiProtocolFlashRead (
>  /**
>    Write data to the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> -  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
> +  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
>    @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
>    @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
>    @param[in] Buffer               Pointer to caller-allocated buffer containing the data sent during the SPI cycle.
> @@ -854,8 +873,8 @@ SpiProtocolFlashRead (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashWrite (
> -  IN     PCH_SPI_PROTOCOL   *This,
> -  IN     FLASH_REGION_TYPE  FlashRegionType,
> +  IN     PCH_SPI2_PROTOCOL  *This,
> +  IN     EFI_GUID           *FlashRegionGuid,
>    IN     UINT32             Address,
>    IN     UINT32             ByteCount,
>    IN     UINT8              *Buffer
> @@ -868,7 +887,7 @@ SpiProtocolFlashWrite (
>    //
>    Status = SendSpiCmd (
>               This,
> -             FlashRegionType,
> +             FlashRegionGuid,
>               FlashCycleWrite,
>               Address,
>               ByteCount,
> @@ -880,8 +899,8 @@ SpiProtocolFlashWrite (
>  /**
>    Erase some area on the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> -  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
> +  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
>    @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
>    @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
>  
> @@ -892,8 +911,8 @@ SpiProtocolFlashWrite (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashErase (
> -  IN     PCH_SPI_PROTOCOL   *This,
> -  IN     FLASH_REGION_TYPE  FlashRegionType,
> +  IN     PCH_SPI2_PROTOCOL  *This,
> +  IN     EFI_GUID           *FlashRegionGuid,
>    IN     UINT32             Address,
>    IN     UINT32             ByteCount
>    )
> @@ -905,7 +924,7 @@ SpiProtocolFlashErase (
>    //
>    Status = SendSpiCmd (
>               This,
> -             FlashRegionType,
> +             FlashRegionGuid,
>               FlashCycleErase,
>               Address,
>               ByteCount,
> @@ -917,7 +936,7 @@ SpiProtocolFlashErase (
>  /**
>    Read SFDP data from the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] ComponentNumber      The Componen Number for chip select
>    @param[in] Address              The starting byte address for SFDP data read.
>    @param[in] ByteCount            Number of bytes in SFDP data portion of the SPI cycle
> @@ -932,20 +951,53 @@ SpiProtocolFlashErase (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashReadSfdp (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT8              ComponentNumber,
>    IN     UINT32             Address,
>    IN     UINT32             ByteCount,
>    OUT    UINT8              *SfdpData
>    )
>  {
> -  return EFI_SUCCESS;
> +  SPI_INSTANCE      *SpiInstance;
> +  EFI_STATUS        Status;
> +  UINT32            FlashAddress;
> +
> +  if (SpiIsSafModeActive ()) {
> +    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
> +    return EFI_UNSUPPORTED;
> +  }
> +
> +  SpiInstance       = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
> +  Status            = EFI_SUCCESS;
> +
> +  if (ComponentNumber > SpiInstance->NumberOfComponents) {
> +    ASSERT (FALSE);
> +    return EFI_INVALID_PARAMETER;
> +  }
> +
> +  FlashAddress = 0;
> +  if (ComponentNumber == FlashComponent1) {
> +    FlashAddress = SpiInstance->Component1StartAddr;
> +  }
> +  FlashAddress += Address;
> +  //
> +  // Sends the command to the SPI interface to execute.
> +  //
> +  Status = SendSpiCmd (
> +             This,
> +             &gFlashRegionAllGuid,
> +             FlashCycleReadSfdp,
> +             FlashAddress,
> +             ByteCount,
> +             SfdpData
> +             );
> +  return Status;
>  }
>  
>  /**
>    Read Jedec Id from the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] ComponentNumber      The Componen Number for chip select
>    @param[in] ByteCount            Number of bytes in JedecId data portion of the SPI cycle, the data size is 3 typically
>    @param[out] JedecId             The Pointer to caller-allocated buffer containing JEDEC ID received
> @@ -959,19 +1011,52 @@ SpiProtocolFlashReadSfdp (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashReadJedecId (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT8              ComponentNumber,
>    IN     UINT32             ByteCount,
>    OUT    UINT8              *JedecId
>    )
>  {
> -  return EFI_SUCCESS;
> +  SPI_INSTANCE      *SpiInstance;
> +  EFI_STATUS        Status;
> +  UINT32            Address;
> +
> +  if (SpiIsSafModeActive ()) {
> +    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
> +    return EFI_UNSUPPORTED;
> +  }
> +
> +  SpiInstance       = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
> +  Status            = EFI_SUCCESS;
> +
> +  if (ComponentNumber > SpiInstance->NumberOfComponents) {
> +    ASSERT (FALSE);
> +    return EFI_INVALID_PARAMETER;
> +  }
> +
> +  Address = 0;
> +  if (ComponentNumber == FlashComponent1) {
> +    Address = SpiInstance->Component1StartAddr;
> +  }
> +
> +  //
> +  // Sends the command to the SPI interface to execute.
> +  //
> +  Status = SendSpiCmd (
> +             This,
> +             &gFlashRegionAllGuid,
> +             FlashCycleReadJedecId,
> +             Address,
> +             ByteCount,
> +             JedecId
> +             );
> +  return Status;
>  }
>  
>  /**
>    Write the status register in the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
>    @param[in] StatusValue          The Pointer to caller-allocated buffer containing the value of Status register writing
>  
> @@ -983,18 +1068,36 @@ SpiProtocolFlashReadJedecId (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashWriteStatus (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT32             ByteCount,
>    IN     UINT8              *StatusValue
>    )
>  {
> -  return EFI_SUCCESS;
> +  EFI_STATUS        Status;
> +
> +  if (SpiIsSafModeActive ()) {
> +    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
> +    return EFI_UNSUPPORTED;
> +  }
> +
> +  //
> +  // Sends the command to the SPI interface to execute.
> +  //
> +  Status = SendSpiCmd (
> +             This,
> +             &gFlashRegionAllGuid,
> +             FlashCycleWriteStatus,
> +             0,
> +             ByteCount,
> +             StatusValue
> +             );
> +  return Status;
>  }
>  
>  /**
>    Read status register in the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
>    @param[out] StatusValue         The Pointer to caller-allocated buffer containing the value of Status register received.
>  
> @@ -1006,19 +1109,37 @@ SpiProtocolFlashWriteStatus (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashReadStatus (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT32             ByteCount,
>    OUT    UINT8              *StatusValue
>    )
>  {
> -  return EFI_SUCCESS;
> +  EFI_STATUS        Status;
> +
> +  if (SpiIsSafModeActive ()) {
> +    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
> +    return EFI_UNSUPPORTED;
> +  }
> +
> +  //
> +  // Sends the command to the SPI interface to execute.
> +  //
> +  Status = SendSpiCmd (
> +             This,
> +             &gFlashRegionAllGuid,
> +             FlashCycleReadStatus,
> +             0,
> +             ByteCount,
> +             StatusValue
> +             );
> +  return Status;
>  }
>  
>  /**
>    Get the SPI region base and size, based on the enum type
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> -  @param[in] FlashRegionType      The Flash Region type for for the base address which is listed in the Descriptor.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
> +  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
>    @param[out] BaseAddress         The Flash Linear Address for the Region 'n' Base
>    @param[out] RegionSize          The size for the Region 'n'
>  
> @@ -1029,18 +1150,24 @@ SpiProtocolFlashReadStatus (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolGetRegionAddress (
> -  IN     PCH_SPI_PROTOCOL   *This,
> -  IN     FLASH_REGION_TYPE  FlashRegionType,
> +  IN     PCH_SPI2_PROTOCOL  *This,
> +  IN     EFI_GUID           *FlashRegionGuid,
>    OUT    UINT32             *BaseAddress,
>    OUT    UINT32             *RegionSize
>    )
>  {
> +  EFI_STATUS          Status;
> +  FLASH_REGION_TYPE   FlashRegionType;
>    SPI_INSTANCE    *SpiInstance;
>    UINTN           PchSpiBar0;
>    UINT32          ReadValue;
>  
>    SpiInstance     = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
>  
> +  Status = GetFlashRegionType (FlashRegionGuid, &FlashRegionType);
> +  if (EFI_ERROR (Status)) {
> +    return EFI_INVALID_PARAMETER;
> +  }
>    if (FlashRegionType >= FlashRegionMax) {
>      return EFI_INVALID_PARAMETER;
>    }
> @@ -1053,10 +1180,8 @@ SpiProtocolGetRegionAddress (
>  
>    PchSpiBar0      = AcquireSpiBar0 (SpiInstance);
>  
> -  ReadValue = MmioRead32 (PchSpiBar0 + (R_SPI_MEM_FREG0_FLASHD + (S_SPI_MEM_FREGX * ((UINT32) FlashRegionType))));
> -
>    ReleaseSpiBar0 (SpiInstance);
> -
> +  ReadValue = MmioRead32 (PchSpiBar0 + (R_SPI_MEM_FREG0_FLASHD + (S_SPI_MEM_FREGX * ((UINT32) FlashRegionType))));
>    //
>    // If the region is not used, the Region Base is 7FFFh and Region Limit is 0000h
>    //
> @@ -1077,7 +1202,7 @@ SpiProtocolGetRegionAddress (
>  /**
>    Read PCH Soft Strap Values
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] SoftStrapAddr        PCH Soft Strap address offset from FPSBA.
>    @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle
>    @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing PCH Soft Strap Value.
> @@ -1091,19 +1216,51 @@ SpiProtocolGetRegionAddress (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolReadPchSoftStrap (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT32             SoftStrapAddr,
>    IN     UINT32             ByteCount,
>    OUT    VOID               *SoftStrapValue
>    )
>  {
> -  return EFI_SUCCESS;
> +  SPI_INSTANCE      *SpiInstance;
> +  UINT32            StrapFlashAddr;
> +  EFI_STATUS        Status;
> +
> +  SpiInstance     = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
> +
> +  if (ByteCount == 0) {
> +    *(UINT16 *) SoftStrapValue = SpiInstance->PchStrapSize;
> +    return EFI_SUCCESS;
> +  }
> +
> +  if ((SoftStrapAddr + ByteCount) > (UINT32) SpiInstance->PchStrapSize) {
> +    ASSERT (FALSE);
> +    return EFI_INVALID_PARAMETER;
> +  }
> +
> +  //
> +  // PCH Strap Flash Address = FPSBA + RamAddr
> +  //
> +  StrapFlashAddr = SpiInstance->PchStrapBaseAddr + SoftStrapAddr;
> +
> +  //
> +  // Read PCH Soft straps from using execute command
> +  //
> +  Status = SendSpiCmd (
> +             This,
> +              &gFlashRegionDescriptorGuid,
> +             FlashCycleRead,
> +             StrapFlashAddr,
> +             ByteCount,
> +             SoftStrapValue
> +             );
> +  return Status;
>  }
>  
>  /**
>    Read CPU Soft Strap Values
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] SoftStrapAddr        CPU Soft Strap address offset from FCPUSBA.
>    @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle.
>    @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing CPU Soft Strap Value.
> @@ -1117,11 +1274,43 @@ SpiProtocolReadPchSoftStrap (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolReadCpuSoftStrap (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT32             SoftStrapAddr,
>    IN     UINT32             ByteCount,
>    OUT    VOID               *SoftStrapValue
>    )
>  {
> -  return EFI_SUCCESS;
> +  SPI_INSTANCE      *SpiInstance;
> +  UINT32            StrapFlashAddr;
> +  EFI_STATUS        Status;
> +
> +  SpiInstance     = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
> +
> +  if (ByteCount == 0) {
> +    *(UINT16 *) SoftStrapValue = SpiInstance->CpuStrapSize;
> +    return EFI_SUCCESS;
> +  }
> +
> +  if ((SoftStrapAddr + ByteCount) > (UINT32) SpiInstance->CpuStrapSize) {
> +    ASSERT (FALSE);
> +    return EFI_INVALID_PARAMETER;
> +  }
> +
> +  //
> +  // CPU Strap Flash Address = FCPUSBA + RamAddr
> +  //
> +  StrapFlashAddr = SpiInstance->CpuStrapBaseAddr + SoftStrapAddr;
> +
> +  //
> +  // Read Cpu Soft straps from using execute command
> +  //
> +  Status = SendSpiCmd (
> +             This,
> +             &gFlashRegionDescriptorGuid,
> +             FlashCycleRead,
> +             StrapFlashAddr,
> +             ByteCount,
> +             SoftStrapValue
> +             );
> +  return Status;
>  }
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c
> index 2dd80eba..68190b2b 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c
> @@ -13,10 +13,11 @@
>  #include <Library/BaseMemoryLib.h>
>  #include <Library/SmmServicesTableLib.h>
>  #include <Library/PciSegmentLib.h>
> -#include <Protocol/Spi.h>
> +#include <Protocol/Spi2.h>
>  #include <Protocol/SmmCpu.h>
>  #include <Library/SpiCommonLib.h>
>  #include <PchReservedResources.h>
> +#include <Library/SmmPchPrivateLib.h>
>  #include <Library/PchPciBdfLib.h>
>  #include <IndustryStandard/Pci30.h>
>  #include <Register/PchRegs.h>
> @@ -82,8 +83,8 @@ SpiExitBootServicesCallback (
>        - Documented in System Management Mode Core Interface Specification .
>  
>    - @result
> -    The SPI SMM driver produces @link _PCH_SPI_PROTOCOL PCH_SPI_PROTOCOL @endlink with GUID
> -    gPchSmmSpiProtocolGuid which is different from SPI RUNTIME driver.
> +    The SPI SMM driver produces @link _PCH_SPI2_PROTOCOL PCH_SPI2_PROTOCOL @endlink with GUID
> +    gPchSmmSpi2ProtocolGuid which is different from SPI RUNTIME driver.
>  
>    - <b>Integration Check List</b>\n
>      - This driver supports Descriptor Mode only.
> @@ -163,11 +164,11 @@ InstallPchSpi (
>    }
>  
>    //
> -  // Install the SMM PCH_SPI_PROTOCOL interface
> +  // Install the SMM PCH_SPI2_PROTOCOL interface
>    //
>    Status = gSmst->SmmInstallProtocolInterface (
>                      &(mSpiInstance->Handle),
> -                    &gPchSmmSpiProtocolGuid,
> +                    &gPchSmmSpi2ProtocolGuid,
>                      EFI_NATIVE_INTERFACE,
>                      &(mSpiInstance->SpiProtocol)
>                      );
> @@ -303,6 +304,19 @@ DisableBiosWriteProtect (
>      B_SPI_CFG_BC_WPD
>      );
>  
> +  ///
> +  /// the BIOS Region can only be updated by following the steps bellow:
> +  ///  - Once all threads enter SMM
> +  ///  - Read memory location FED30880h OR with 00000001h, place the result in EAX,
> +  ///    and write data to lower 32 bits of MSR 1FEh (sample code available)
> +  ///  - Set BIOSWE bit (SPI PCI Offset DCh [0]) = 1b
> +  ///  - Modify BIOS Region
> +  ///  - Clear BIOSWE bit (SPI PCI Offset DCh [0]) = 0b
> +  ///
> +  if ((PciSegmentRead8 (SpiBaseAddress + R_SPI_CFG_BC) & B_SPI_CFG_BC_EISS) != 0) {
> +    PchSetInSmmSts ();
> +  }
> +
>    return EFI_SUCCESS;
>  }
>  
> @@ -327,6 +341,12 @@ EnableBiosWriteProtect (
>      (UINT8) (~B_SPI_CFG_BC_WPD)
>      );
>  
> +  ///
> +  /// Check if EISS bit is set
> +  ///
> +  if (((PciSegmentRead8 (SpiBaseAddress + R_SPI_CFG_BC)) & B_SPI_CFG_BC_EISS) == B_SPI_CFG_BC_EISS) {
> +    PchClearInSmmSts ();
> +  }
>  }
>  
>  /**
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf
> index 78913423..445f4af8 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf
> @@ -24,19 +24,20 @@ UefiBootServicesTableLib
>  BaseLib
>  SmmServicesTableLib
>  SpiCommonLib
> +SmmPchPrivateLib
>  PchPciBdfLib
>  
>  [Packages]
>  MdePkg/MdePkg.dec
>  AlderlakeSiliconPkg/SiPkg.dec
> -
> +IntelSiliconPkg/IntelSiliconPkg.dec
>  
>  [Sources]
>  Spi.c
>  
>  
>  [Protocols]
> -gPchSmmSpiProtocolGuid                ## PRODUCES
> +gPchSmmSpi2ProtocolGuid                ## PRODUCES
>  gEfiSmmCpuProtocolGuid                ## CONSUMES
>  gEdkiiSmmExitBootServicesProtocolGuid ## CONSUMES
>  
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h b/Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h
> new file mode 100644
> index 00000000..63857863
> --- /dev/null
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h
> @@ -0,0 +1,27 @@
> +/** @file
> +  Header file for private PCH SMM Lib.
> +
> +  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
> +  SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +#ifndef _SMM_PCH_PRIVATE_LIB_H_
> +#define _SMM_PCH_PRIVATE_LIB_H_
> +
> +/**
> +  Set InSmm.Sts bit
> +**/
> +VOID
> +PchSetInSmmSts (
> +  VOID
> +  );
> +
> +/**
> +  Clear InSmm.Sts bit
> +**/
> +VOID
> +PchClearInSmmSts (
> +  VOID
> +  );
> +
> +#endif // _SMM_PCH_PRIVATE_LIB_H_
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c
> new file mode 100644
> index 00000000..0436a423
> --- /dev/null
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c
> @@ -0,0 +1,61 @@
> +/** @file
> +  PCH SMM private lib.
> +
> +  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
> +  SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#include <Uefi/UefiBaseType.h>
> +#include <Library/BaseLib.h>
> +#include <Library/IoLib.h>
> +#include <Library/DebugLib.h>
> +#include <Library/CpuPlatformLib.h>
> +#include <CpuRegs.h>
> +#include <Register/CommonMsr.h>
> +#include <Register/PttPtpRegs.h>
> +
> +
> +/**
> +  Set InSmm.Sts bit
> +**/
> +VOID
> +PchSetInSmmSts (
> +  VOID
> +  )
> +{
> +  UINT32      Data32;
> +
> +  ///
> +  /// Read memory location FED30880h OR with 00000001h, place the result in EAX,
> +  /// and write data to lower 32 bits of MSR 1FEh (sample code available)
> +  ///
> +  Data32 = MmioRead32 (R_LT_UCS);
> +  AsmWriteMsr32 (MSR_SPCL_CHIPSET_USAGE, Data32 | BIT0);
> +  ///
> +  /// Read FED30880h back to ensure the setting went through.
> +  ///
> +  Data32 = MmioRead32 (R_LT_UCS);
> +}
> +
> +/**
> +  Clear InSmm.Sts bit
> +**/
> +VOID
> +PchClearInSmmSts (
> +  VOID
> +  )
> +{
> +  UINT32      Data32;
> +
> +  ///
> +  /// Read memory location FED30880h AND with FFFFFFFEh, place the result in EAX,
> +  /// and write data to lower 32 bits of MSR 1FEh (sample code available)
> +  ///
> +  Data32 = MmioRead32 (R_LT_UCS);
> +  AsmWriteMsr32 (MSR_SPCL_CHIPSET_USAGE, Data32 & (UINT32) (~BIT0));
> +  ///
> +  /// Read FED30880h back to ensure the setting went through.
> +  ///
> +  Data32 = MmioRead32 (R_LT_UCS);
> +}
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf
> new file mode 100644
> index 00000000..3c62b9b8
> --- /dev/null
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf
> @@ -0,0 +1,32 @@
> +## @file
> +#  PCH SMM private lib.
> +#
> +#  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
> +#  SPDX-License-Identifier: BSD-2-Clause-Patent
> +#
> +##
> +
> +
> +[Defines]
> +INF_VERSION = 0x00010017
> +BASE_NAME = SmmPchPrivateLib
> +FILE_GUID = FE6495FB-7AA9-4A24-BF3E-4698F7BCE0EE
> +VERSION_STRING = 1.0
> +MODULE_TYPE = DXE_SMM_DRIVER
> +LIBRARY_CLASS = SmmPchPrivateLib
> +
> +
> +[LibraryClasses]
> +BaseLib
> +IoLib
> +DebugLib
> +CpuPlatformLib
> +
> +
> +[Packages]
> +MdePkg/MdePkg.dec
> +AlderlakeSiliconPkg/SiPkg.dec
> +
> +
> +[Sources]
> +SmmPchPrivateLib.c
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc b/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc
> index 37876cbf..238473c2 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc
> @@ -11,6 +11,11 @@
>  !include $(PLATFORM_SI_PACKAGE)/Fru/AdlCpu/DxeLib.dsc
>  !include $(PLATFORM_SI_PACKAGE)/Fru/AdlPch/DxeLib.dsc
>  
> +#
> +# Pch
> +#
> + SmmPchPrivateLib|$(PLATFORM_SI_PACKAGE)/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf
> +
>  #
>  # Common
>  #
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec b/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec
> index ce9cfe59..aafce7a6 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec
> @@ -33,6 +33,7 @@ IpBlock/HostBridge/IncludePrivate
>  
>  # Cpu
>  Cpu/IncludePrivate
> +Pch/IncludePrivate
>  
>  IncludePrivate
>  
> @@ -355,6 +356,7 @@ PchInfoLib|Pch/Include/Library/PchInfoLib.h
>  PchPcieRpLib|Include/Library/PchPcieRpLib.h
>  PchPcrLib|Include/Library/PchPcrLib.h
>  PchSbiAccessLib|IpBlock/P2sb/IncludePrivate/Library/PchSbiAccessLib.h
> +SmmPchPrivateLib|Pch/IncludePrivate/Library/SmmPchPrivateLib.h
>  PchPciBdfLib|Pch/Include/Library/PchPciBdfLib.h
>  PchRasLib|Pch/Include/Library/PchRasLib.h
>  PchRtcLib|Pch/Include/Library/PchRtcLib.h
> @@ -394,7 +396,7 @@ OcPlatformLib|Include/Library/OcPlatformLib.h
>  PeiSpsPreMemPolicyLib|Include/Library/PeiSpsPreMemPolicyLib.h
>  PmcLib|Include/Library/PmcLib.h
>  PmcSsramLib|Include/Library/PmcSsramLib.h
> -SpiLib|Include/Library/SpiLib.h
> +SpiAccessLib|Include/Library/SpiAccessLib.h
>  SpsDxeLib|Include/Library/SpsDxeLib.h
>  SpsGetDxeConfigBlockLib|Include/Library/SpsGetDxeConfigBlock.h
>  MeGetPeiConfigBlock|Include/Library/MeGetConfigBlock.h
> -- 
> 2.26.2.windows.1
> 
> 
> 
> -=-=-=-=-=-=
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> -=-=-=-=-=-=
> 



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^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [edk2-devel] [PATCH] AlderlakeSiliconPkg: Update for SPI2 Protocol and Identify flash regions by GUID
  2024-04-08 22:34 ` Nate DeSimone
@ 2024-04-08 22:37   ` Nate DeSimone
  0 siblings, 0 replies; 6+ messages in thread
From: Nate DeSimone @ 2024-04-08 22:37 UTC (permalink / raw)
  To: devel@edk2.groups.io, Hsueh, DoraX
  Cc: Chaganty, Rangasai V, Chuang, Rosen, Kasbekar, Saloni,
	Tang, Haoyu

Pushed as e0051bc

> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of
> dorax.hsueh@intel.com
> Sent: Thursday, February 1, 2024 10:32 PM
> To: devel@edk2.groups.io
> Cc: Hsueh, DoraX <dorax.hsueh@intel.com>; Chaganty, Rangasai V
> <rangasai.v.chaganty@intel.com>; Chuang, Rosen <rosen.chuang@intel.com>;
> Kasbekar, Saloni <saloni.kasbekar@intel.com>; Tang, Haoyu
> <haoyu.tang@intel.com>
> Subject: [edk2-devel] [PATCH] AlderlakeSiliconPkg: Update for SPI2 Protocol
> and Identify flash regions by GUID
> 
> From: DoraX Hsueh <dorax.hsueh@intel.com>
> 
> https://bugzilla.tianocore.org/show_bug.cgi?id=4664
> 
> 1. Updates references to the "PCH_SPI_PROTOCOL" to instead refer to
> "PCH_SPI2_PROTOCOL".
> 2. Updates the library to identify flash regions by GUID and internally
> map the GUID entries to values specific to AlderlakeSiliconPkg.
> 3. Libs/modules that need to reference IntelSiliconPkg are updated.
> 4. Add gUsbConfigGuid to fix USB not working issue in OS.
> 
> Cc: Sai Chaganty <rangasai.v.chaganty@intel.com>
> Cc: Rosen Chuang <rosen.chuang@intel.com>
> Cc: Saloni Kasbekar <saloni.kasbekar@intel.com>
> Cc: Haoyu Tang <haoyu.tang@intel.com>
> Signed-off-by: DoraX Hsueh <dorax.hsueh@intel.com>
> ---
>  .../Cpu/Include/Register/CommonMsr.h          |   4 +
>  .../Fru/AdlPch/CommonLib.dsc                  |   2 +-
>  .../AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc |   2 -
>  .../Include/Library/SpiAccessLib.h            |  44 ++
>  .../Include/Register/PttPtpRegs.h             |  26 +
>  .../Include/Register/TcoRegs.h                |   1 +
>  .../Spi/IncludePrivate/Library/SpiCommonLib.h |  60 +--
>  .../Spi/IncludePrivate/Register/SpiRegs.h     |   8 +-
>  .../PeiDxeSmmSpiAccessLib.inf                 |  33 ++
>  .../PeiDxeSmmSpiAccessLib/SpiAccessLib.c      |  75 +++
>  .../IpBlock/Spi/Library/PeiSpiLib/PchSpi.c    |   2 +-
>  .../Spi/Library/PeiSpiLib/PeiSpiLib.inf       |   2 +-
>  .../BaseSpiCommonLib/BaseSpiCommonLib.inf     |  19 +-
>  .../BaseSpiCommonLib/SpiCommon.c              | 491 ++++++++++++------
>  .../AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c |  30 +-
>  .../IpBlock/Spi/Smm/SpiSmm.inf                |   5 +-
>  .../IncludePrivate/Library/SmmPchPrivateLib.h |  27 +
>  .../SmmPchPrivateLib/SmmPchPrivateLib.c       |  61 +++
>  .../SmmPchPrivateLib/SmmPchPrivateLib.inf     |  32 ++
>  .../Product/Alderlake/SiPkgDxeLib.dsc         |   5 +
>  Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec   |   4 +-
>  21 files changed, 733 insertions(+), 200 deletions(-)
>  create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h
>  create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h
>  create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
>  create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c
>  create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h
>  create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c
>  create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf
> 
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h b/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h
> index caa0e67b..44a476c0 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h
> @@ -56,5 +56,9 @@ typedef union {
>  
>  } MSR_CORE_THREAD_COUNT_REGISTER;
>  
> +/**
> +  Special Chipset Usage MSR
> +**/
> +#define MSR_SPCL_CHIPSET_USAGE 0x000001FE
>  
>  #endif /* _COMMONMSR_h */
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc
> index 3f508f83..ee5800a9 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc
> @@ -11,7 +11,7 @@
>  
>    EspiLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Espi/Library/PeiDxeSmmEspiLib/PeiDxeSmmEspiLib.inf
>  
> -
> +  SpiAccessLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
>    PmcLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Pmc/Library/PeiDxeSmmPmcLib/PeiDxeSmmPmcLib.inf
>    PmcPrivateLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Pmc/LibraryPrivate/PeiDxeSmmPmcPrivateLib/PeiDxeSmmPmcPrivateLib.inf
>    SpiCommonLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc
> index ebe2bbfd..cbaf8e37 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc
> @@ -5,8 +5,6 @@
>  #   SPDX-License-Identifier: BSD-2-Clause-Patent
>  ##
>  
> -  SpiLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
> -
>    GpioHelpersLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Gpio/LibraryPrivate/PeiGpioHelpersLib/PeiGpioHelpersLib.inf
>  
>  
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h b/Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h
> new file mode 100644
> index 00000000..6e7f48fe
> --- /dev/null
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h
> @@ -0,0 +1,44 @@
> +/** @file
> +  SPI library header for abstraction of SPI HW registers accesses
> +
> +  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
> +  SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +#ifndef _SPI_ACCESS_LIB_H_
> +#define _SPI_ACCESS_LIB_H_
> +
> +
> +/**
> +  Returns SPI BAR0 value
> +
> +  @retval  UINT32  PCH SPI BAR0 value
> +**/
> +UINT32
> +SpiGetBar0 (
> +  VOID
> +  );
> +
> +/**
> +  Checks if PCH SPI Controler is present and available
> +
> +  @retval TRUE    PCH SPI controller is avaialable
> +  @retval FALSE   PCH SPI controller is not available
> +**/
> +BOOLEAN
> +SpiIsControllerAvailable (
> +  VOID
> +  );
> +
> +/**
> +  Checks if Device Attached Flash (DAF) mode is active
> +
> +  @retval TRUE    SAF mode is active
> +  @retval FALSE   SAF mode is not active
> +**/
> +BOOLEAN
> +SpiIsSafModeActive (
> +  VOID
> +  );
> +
> +#endif // _SPI_ACCESS_LIB_H_
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h b/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h
> new file mode 100644
> index 00000000..df9905a0
> --- /dev/null
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h
> @@ -0,0 +1,26 @@
> +/** @file
> +  Register definitions for PTT HCI (Platform Trust Technology - Host Controller Interface).
> +
> +  Conventions:
> +
> +  - Prefixes:
> +    Definitions beginning with "R_" are registers
> +    Definitions beginning with "B_" are bits within registers
> +    Definitions beginning with "V_" are meaningful values of bits within the registers
> +    Definitions beginning with "S_" are register sizes
> +    Definitions beginning with "N_" are the bit position
> +
> +  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
> +  SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +#ifndef _PTT_HCI_REGS_H_
> +#define _PTT_HCI_REGS_H_
> +
> +///
> +/// LT public space registers
> +///
> +#define R_LT_UCS                           0xFED30880
> +
> +
> +#endif
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/TcoRegs.h b/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/TcoRegs.h
> index c3afcd50..081cf896 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/TcoRegs.h
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/TcoRegs.h
> @@ -62,6 +62,7 @@
>  
>  #define R_TCO_IO_TCO1_CNT                            0x08
>  #define S_TCO_IO_TCO1_CNT                            2
> +#define B_TCO_IO_TCO1_CNT_TMR_HLT                    BIT11
>  #define N_TCO_IO_TCO1_CNT_NMI2SMI_EN                 9
>  
>  #define R_TCO_IO_TCO2_CNT                            0x0A
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h
> index e13718c9..dc663198 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h
> @@ -7,7 +7,7 @@
>  #ifndef _SPI_COMMON_LIB_H_
>  #define _SPI_COMMON_LIB_H_
>  
> -#include <Protocol/Spi.h>
> +#include <Protocol/Spi2.h>
>  
>  //
>  // Maximum time allowed while waiting the SPI cycle to complete
> @@ -49,7 +49,7 @@ typedef enum {
>  typedef struct {
>    UINT32                Signature;
>    EFI_HANDLE            Handle;
> -  PCH_SPI_PROTOCOL      SpiProtocol;
> +  PCH_SPI2_PROTOCOL     SpiProtocol;
>    UINT16                PchAcpiBase;
>    UINT64                PchSpiBase;
>    UINT8                 ReadPermission;
> @@ -157,8 +157,8 @@ IsSpiControllerSaveRestoreEnabled (
>  /**
>    Read data from the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> -  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
> +  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
>    @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
>    @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
>    @param[out] Buffer              The Pointer to caller-allocated buffer containing the dada received.
> @@ -171,8 +171,8 @@ IsSpiControllerSaveRestoreEnabled (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashRead (
> -  IN     PCH_SPI_PROTOCOL   *This,
> -  IN     FLASH_REGION_TYPE  FlashRegionType,
> +  IN     PCH_SPI2_PROTOCOL  *This,
> +  IN     EFI_GUID           *FlashRegionGuid,
>    IN     UINT32             Address,
>    IN     UINT32             ByteCount,
>    OUT    UINT8              *Buffer
> @@ -181,8 +181,8 @@ SpiProtocolFlashRead (
>  /**
>    Write data to the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> -  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
> +  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
>    @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
>    @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
>    @param[in] Buffer               Pointer to caller-allocated buffer containing the data sent during the SPI cycle.
> @@ -194,8 +194,8 @@ SpiProtocolFlashRead (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashWrite (
> -  IN     PCH_SPI_PROTOCOL   *This,
> -  IN     FLASH_REGION_TYPE  FlashRegionType,
> +  IN     PCH_SPI2_PROTOCOL  *This,
> +  IN     EFI_GUID           *FlashRegionGuid,
>    IN     UINT32             Address,
>    IN     UINT32             ByteCount,
>    IN     UINT8              *Buffer
> @@ -204,8 +204,8 @@ SpiProtocolFlashWrite (
>  /**
>    Erase some area on the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> -  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
> +  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
>    @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
>    @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
>  
> @@ -216,8 +216,8 @@ SpiProtocolFlashWrite (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashErase (
> -  IN     PCH_SPI_PROTOCOL   *This,
> -  IN     FLASH_REGION_TYPE  FlashRegionType,
> +  IN     PCH_SPI2_PROTOCOL  *This,
> +  IN     EFI_GUID           *FlashRegionGuid,
>    IN     UINT32             Address,
>    IN     UINT32             ByteCount
>    );
> @@ -225,7 +225,7 @@ SpiProtocolFlashErase (
>  /**
>    Read SFDP data from the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] ComponentNumber      The Componen Number for chip select
>    @param[in] Address              The starting byte address for SFDP data read.
>    @param[in] ByteCount            Number of bytes in SFDP data portion of the SPI cycle
> @@ -239,7 +239,7 @@ SpiProtocolFlashErase (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashReadSfdp (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT8              ComponentNumber,
>    IN     UINT32             Address,
>    IN     UINT32             ByteCount,
> @@ -249,7 +249,7 @@ SpiProtocolFlashReadSfdp (
>  /**
>    Read Jedec Id from the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] ComponentNumber      The Componen Number for chip select
>    @param[in] ByteCount            Number of bytes in JedecId data portion of the SPI cycle, the data size is 3 typically
>    @param[out] JedecId             The Pointer to caller-allocated buffer containing JEDEC ID received
> @@ -262,7 +262,7 @@ SpiProtocolFlashReadSfdp (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashReadJedecId (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT8              ComponentNumber,
>    IN     UINT32             ByteCount,
>    OUT    UINT8              *JedecId
> @@ -271,7 +271,7 @@ SpiProtocolFlashReadJedecId (
>  /**
>    Write the status register in the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
>    @param[in] StatusValue          The Pointer to caller-allocated buffer containing the value of Status register writing
>  
> @@ -282,7 +282,7 @@ SpiProtocolFlashReadJedecId (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashWriteStatus (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT32             ByteCount,
>    IN     UINT8              *StatusValue
>    );
> @@ -290,7 +290,7 @@ SpiProtocolFlashWriteStatus (
>  /**
>    Read status register in the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
>    @param[out] StatusValue         The Pointer to caller-allocated buffer containing the value of Status register received.
>  
> @@ -301,7 +301,7 @@ SpiProtocolFlashWriteStatus (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashReadStatus (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT32             ByteCount,
>    OUT    UINT8              *StatusValue
>    );
> @@ -309,8 +309,8 @@ SpiProtocolFlashReadStatus (
>  /**
>    Get the SPI region base and size, based on the enum type
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> -  @param[in] FlashRegionType      The Flash Region type for for the base address which is listed in the Descriptor.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
> +  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
>    @param[out] BaseAddress         The Flash Linear Address for the Region 'n' Base
>    @param[out] RegionSize          The size for the Region 'n'
>  
> @@ -321,8 +321,8 @@ SpiProtocolFlashReadStatus (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolGetRegionAddress (
> -  IN     PCH_SPI_PROTOCOL   *This,
> -  IN     FLASH_REGION_TYPE  FlashRegionType,
> +  IN     PCH_SPI2_PROTOCOL  *This,
> +  IN     EFI_GUID           *FlashRegionGuid,
>    OUT    UINT32             *BaseAddress,
>    OUT    UINT32             *RegionSize
>    );
> @@ -330,7 +330,7 @@ SpiProtocolGetRegionAddress (
>  /**
>    Read PCH Soft Strap Values
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] SoftStrapAddr        PCH Soft Strap address offset from FPSBA.
>    @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle
>    @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing PCH Soft Strap Value.
> @@ -344,7 +344,7 @@ SpiProtocolGetRegionAddress (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolReadPchSoftStrap (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT32             SoftStrapAddr,
>    IN     UINT32             ByteCount,
>    OUT    VOID               *SoftStrapValue
> @@ -353,7 +353,7 @@ SpiProtocolReadPchSoftStrap (
>  /**
>    Read CPU Soft Strap Values
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] SoftStrapAddr        CPU Soft Strap address offset from FCPUSBA.
>    @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle.
>    @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing CPU Soft Strap Value.
> @@ -367,7 +367,7 @@ SpiProtocolReadPchSoftStrap (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolReadCpuSoftStrap (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT32             SoftStrapAddr,
>    IN     UINT32             ByteCount,
>    OUT    VOID               *SoftStrapValue
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h
> index 5cb47911..57e269e1 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h
> @@ -62,6 +62,7 @@
>  //
>  // BIOS Flash Program Registers (based on SPI_BAR0)
>  //
> +#define R_SPI_MEM_BFPR                      0x00                          ///< BIOS Flash Primary Region Register(32bits), which is RO and contains the same value from FREG1
>  #define R_SPI_MEM_HSFSC                     0x04                          ///< Hardware Sequencing Flash Status and Control Register(32bits)
>  #define B_SPI_MEM_HSFSC_FDBC_MASK           0x3F000000                    ///< Flash Data Byte Count ( <= 64), Count = (Value in this field) + 1.
>  #define N_SPI_MEM_HSFSC_FDBC                24
> @@ -78,12 +79,8 @@
>  #define B_SPI_MEM_HSFSC_CYCLE_FGO           BIT16                         ///< Flash Cycle Go.
>  #define B_SPI_MEM_HSFSC_FDV                 BIT14                         ///< Flash Descriptor Valid, once valid software can use hareware sequencing regs
>  #define B_SPI_MEM_HSFSC_WRSDIS              BIT11                         ///< Write Status Disable
> -#define B_SPI_MEM_HSFSC_SAF_CE              BIT8                          ///< SAF ctype error
> -#define B_SPI_MEM_HSFSC_SAF_LE              BIT6                          ///< SAF link error
> +#define B_SPI_MEM_HSFSC_SAF_MODE_ACTIVE     BIT7                          ///< Indicates flash is attached either directly to the PCH via the SPI bus or EC/BMC
>  #define B_SPI_MEM_HSFSC_SCIP                BIT5                          ///< SPI cycle in progress
> -#define B_SPI_MEM_HSFSC_SAF_DLE             BIT4                          ///< SAF Data length error
> -#define B_SPI_MEM_HSFSC_SAF_ERROR           BIT3                          ///< SAF Error
> -#define B_SPI_MEM_HSFSC_AEL                 BIT2                          ///< Access Error Log
>  #define B_SPI_MEM_HSFSC_FCERR               BIT1                          ///< Flash Cycle Error
>  #define B_SPI_MEM_HSFSC_FDONE               BIT0                          ///< Flash Cycle Done
>  #define R_SPI_MEM_FADDR                     0x08                          ///< SPI Flash Address
> @@ -113,4 +110,5 @@
>  #define B_SPI_MEM_SFDPX_VSCCX_EO_64K        BIT29                         ///< 64k Erase valid (EO_64k_valid)
>  #define R_SPI_MEM_SFDP1_VSCC1               0xC8                          ///< Vendor Specific Component Capabilities Register(32 bits)
>  
> +
>  #endif
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
> new file mode 100644
> index 00000000..444c6b34
> --- /dev/null
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
> @@ -0,0 +1,33 @@
> +## @file
> +# Component description file for PCH SPI access library
> +#
> +#  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
> +#  SPDX-License-Identifier: BSD-2-Clause-Patent
> +#
> +##
> +
> +
> +[Defines]
> +INF_VERSION     = 0x00010017
> +BASE_NAME       = PeiDxeSmmSpiAccessLib
> +FILE_GUID       = A6D4C05A-F6CB-46D5-4BA1-8C47B139DCA6
> +VERSION_STRING  = 1.0
> +MODULE_TYPE     = BASE
> +LIBRARY_CLASS   = SpiAccessLib
> +
> +
> +[LibraryClasses]
> +BaseLib
> +IoLib
> +DebugLib
> +PciSegmentLib
> +PchPciBdfLib
> +PchPcrLib
> +
> +[Packages]
> +MdePkg/MdePkg.dec
> +AlderlakeSiliconPkg/SiPkg.dec
> +
> +
> +[Sources]
> +SpiAccessLib.c
> \ No newline at end of file
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c
> new file mode 100644
> index 00000000..da8475ea
> --- /dev/null
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c
> @@ -0,0 +1,75 @@
> +/** @file
> +  SPI library for abstraction of SPI HW registers accesses
> +
> +  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
> +  SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#include <Base.h>
> +#include <Uefi/UefiBaseType.h>
> +#include <IndustryStandard/Pci22.h>
> +#include <Library/BaseLib.h>
> +#include <Library/IoLib.h>
> +#include <Library/DebugLib.h>
> +#include <Library/PciSegmentLib.h>
> +#include <Library/SpiAccessLib.h>
> +#include <Library/PchPciBdfLib.h>
> +#include <Register/SpiRegs.h>
> +#include <Register/FlashRegs.h>
> +#include <Register/PchRegs.h>
> +#include <Register/PchDmiRegs.h>
> +
> +
> +/**
> +  Checks if PCH SPI Controler is present and available
> +
> +  @retval TRUE    PCH SPI controller is avaialable
> +  @retval FALSE   PCH SPI controller is not available
> +**/
> +BOOLEAN
> +SpiIsControllerAvailable (
> +  VOID
> +  )
> +{
> +  //
> +  // Checks for SPI controller
> +  //
> +  return (PciSegmentRead16 (SpiPciCfgBase () + PCI_VENDOR_ID_OFFSET) != 0xFFFF);
> +}
> +
> +/**
> +  Returns PCH SPI BAR0 value
> +
> +  @retval  UINT32  PCH SPI BAR0 value
> +**/
> +UINT32
> +SpiGetBar0 (
> +  VOID
> +  )
> +{
> +  UINT32  SpiBar0;
> +
> +  ASSERT (SpiIsControllerAvailable ());
> +  SpiBar0 = PciSegmentRead32 (SpiPciCfgBase () + R_SPI_CFG_BAR0) & ~B_SPI_CFG_BAR0_MASK;
> +  ASSERT (SpiBar0 != 0);
> +
> +  return SpiBar0;
> +}
> +
> +/**
> +  Checks if device Attached Flash (DAF) mode is active
> +
> +  @retval TRUE    SAF mode is active
> +  @retval FALSE   SAF mode is not active
> +**/
> +BOOLEAN
> +SpiIsSafModeActive (
> +  VOID
> +  )
> +{
> +  UINT32 SpiBar0;
> +  SpiBar0 = SpiGetBar0 ();
> +
> +  return !!(MmioRead32 (SpiBar0 + R_SPI_MEM_HSFSC) & B_SPI_MEM_HSFSC_SAF_MODE_ACTIVE);
> +}
> \ No newline at end of file
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c
> index aaf4e179..68031b4a 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c
> @@ -9,7 +9,7 @@
>  #include <Library/MemoryAllocationLib.h>
>  #include <Library/PeiServicesLib.h>
>  #include <Library/PciSegmentLib.h>
> -#include <Ppi/Spi.h>
> +#include <Ppi/Spi2.h>
>  #include <Library/SpiCommonLib.h>
>  #include <PchReservedResources.h>
>  #include <IndustryStandard/Pci30.h>
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
> index c3bf6d02..e720eed2 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
> @@ -30,7 +30,7 @@ PchPciBdfLib
>  [Packages]
>  MdePkg/MdePkg.dec
>  AlderlakeSiliconPkg/SiPkg.dec
> -
> +IntelSiliconPkg/IntelSiliconPkg.dec
>  
>  [Sources]
>  PchSpi.c
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
> index 25ab9194..b38e149d 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
> @@ -19,11 +19,28 @@
>  [Packages]
>    MdePkg/MdePkg.dec
>    AlderlakeSiliconPkg/SiPkg.dec
> +  IntelSiliconPkg/IntelSiliconPkg.dec
>  
>  [LibraryClasses]
>    IoLib
>    DebugLib
>    PmcLib
>    PchPciBdfLib
> +  SpiAccessLib
>  
> -[Pcd]
> +[Guids]
> +  gFlashRegionDescriptorGuid
> +  gFlashRegionBiosGuid
> +  gFlashRegionMeGuid
> +  gFlashRegionGbeGuid
> +  gFlashRegionPlatformDataGuid
> +  gFlashRegionDerGuid
> +  gFlashRegionSecondaryBiosGuid
> +  gFlashRegionMicrocodePatchGuid
> +  gFlashRegionEcGuid
> +  gFlashRegionDeviceExpansionGuid
> +  gFlashRegionIeGuid
> +  gFlashRegion10GbeAGuid
> +  gFlashRegion10GbeBGuid
> +  gFlashRegionAllGuid
> +  gFlashRegionMaxGuid
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c
> index ab51521f..8d1c4785 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c
> @@ -12,17 +12,137 @@
>  #include <IndustryStandard/Pci30.h>
>  #include <Library/PmcLib.h>
>  #include <Library/PciSegmentLib.h>
> -#include <Protocol/Spi.h>
> +#include <Protocol/Spi2.h>
>  #include <Library/SpiCommonLib.h>
>  #include <Register/PchRegs.h>
>  #include <Register/SpiRegs.h>
>  #include <Register/FlashRegs.h>
>  #include <Register/PmcRegs.h>
>  #include <Library/PchPciBdfLib.h>
> +#include <Library/SpiAccessLib.h>
>  
>  #define DEFAULT_CPU_STRAP_BASE_OFFSET 0x300 // Default CPU Straps base offset
>  #define B_SPI_MEM_HSFSC_SAVE_MASK     (B_SPI_MEM_HSFSC_FDBC_MASK | B_SPI_MEM_HSFSC_CYCLE_MASK)
>  
> +typedef enum {
> +  FlashRegionDescriptor,
> +  FlashRegionBios,
> +  FlashRegionMe,
> +  FlashRegionGbe,
> +  FlashRegionPlatformData,
> +  FlashRegionDer,
> +  FlashRegionSecondaryBios,
> +  FlashRegionMicrocodePatch,
> +  FlashRegionEc,
> +  FlashRegionDeviceExpansion,
> +  FlashRegionIe,
> +  FlashRegion10GbeA,
> +  FlashRegion10GbeB,
> +  FlashRegionAll = 16,
> +  FlashRegionMax
> +} FLASH_REGION_TYPE;
> +
> +typedef struct {
> +  EFI_GUID            *Guid;
> +  FLASH_REGION_TYPE   Type;
> +} FLASH_REGION_MAPPING;
> +
> +FLASH_REGION_MAPPING mFlashRegionTypes[] = {
> +  {
> +    &gFlashRegionDescriptorGuid,
> +    FlashRegionDescriptor
> +  },
> +  {
> +    &gFlashRegionBiosGuid,
> +    FlashRegionBios
> +  },
> +  {
> +    &gFlashRegionMeGuid,
> +    FlashRegionMe
> +  },
> +  {
> +    &gFlashRegionGbeGuid,
> +    FlashRegionGbe
> +  },
> +  {
> +    &gFlashRegionPlatformDataGuid,
> +    FlashRegionPlatformData
> +  },
> +  {
> +    &gFlashRegionDerGuid,
> +    FlashRegionDer
> +  },
> +  {
> +    &gFlashRegionSecondaryBiosGuid,
> +    FlashRegionSecondaryBios
> +  },
> +  {
> +    &gFlashRegionMicrocodePatchGuid,
> +    FlashRegionMicrocodePatch
> +  },
> +  {
> +    &gFlashRegionEcGuid,
> +    FlashRegionEc
> +  },
> +  {
> +    &gFlashRegionDeviceExpansionGuid,
> +    FlashRegionDeviceExpansion
> +  },
> +  {
> +    &gFlashRegionIeGuid,
> +    FlashRegionIe
> +  },
> +  {
> +    &gFlashRegion10GbeAGuid,
> +    FlashRegion10GbeA
> +  },
> +  {
> +    &gFlashRegion10GbeBGuid,
> +    FlashRegion10GbeB
> +  },
> +  {
> +    &gFlashRegionAllGuid,
> +    FlashRegionAll
> +  },
> +  {
> +    &gFlashRegionMaxGuid,
> +    FlashRegionMax
> +  }
> +};
> +
> +/**
> +  Returns the type of a flash region given its GUID.
> +
> +  @param[in]    FlashRegionGuid   Pointer to the flash region GUID.
> +  @param[out]   FlashRegionType   Pointer to a buffer that will be set to the flash region type value.
> +
> +  @retval       EFI_SUCCESS             The flash region type was found for the given flash region GUID.
> +  @retval       EFI_INVALID_PARAMETER   A pointer argument passed to the function is NULL.
> +  @retval       EFI_NOT_FOUND           The flash region type was not found for the given flash region GUID.
> +
> +**/
> +EFI_STATUS
> +GetFlashRegionType (
> +  IN     EFI_GUID           *FlashRegionGuid,
> +  OUT    FLASH_REGION_TYPE  *FlashRegionType
> +  )
> +{
> +  UINTN   Index;
> +
> +  if (FlashRegionGuid == NULL || FlashRegionType == NULL) {
> +    return EFI_INVALID_PARAMETER;
> +  }
> +
> +  for (Index = 0; Index < ARRAY_SIZE (mFlashRegionTypes); Index++) {
> +    if (CompareGuid (mFlashRegionTypes[Index].Guid, FlashRegionGuid)) {
> +      *FlashRegionType = mFlashRegionTypes[Index].Type;
> +      return EFI_SUCCESS;
> +    }
> +  }
> +
> +  return EFI_NOT_FOUND;
> +}
> +
>  /**
>    Initialize an SPI protocol instance.
>  
> @@ -184,7 +304,7 @@ SpiProtocolConstructor (
>    // If CPU Strap base address is different than 0x300 need to add MDTBA value for final location
>    //
>    if (SpiInstance->CpuStrapBaseAddr != DEFAULT_CPU_STRAP_BASE_OFFSET) {
> -    Status = SpiProtocolFlashRead (&(SpiInstance->SpiProtocol), FlashRegionAll, R_FLASH_UMAP1, sizeof (Data32), (UINT8 *) (&Data32));
> +    Status = SpiProtocolFlashRead (&(SpiInstance->SpiProtocol), &gFlashRegionAllGuid, R_FLASH_UMAP1, sizeof (Data32), (UINT8 *) (&Data32));
>      ASSERT_EFI_ERROR (Status);
>      Mdtba = (UINT16)(((Data32 & B_FLASH_UMAP1_MDTBA) >> N_FLASH_UMAP1_MDTBA) << N_FLASH_UMAP1_MDTBA_REPR);
>      DEBUG ((DEBUG_INFO, "Mdtba : %0x\n", Mdtba));
> @@ -279,7 +399,7 @@ PchPmTimerStallRuntimeSafe (
>  STATIC
>  BOOLEAN
>  WaitForSpiCycleComplete (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINTN              PchSpiBar0,
>    IN     BOOLEAN            ErrorCheck
>    )
> @@ -317,7 +437,7 @@ WaitForSpiCycleComplete (
>    This function waits for a pending SPI transaction to complete without clearing
>    status fields
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] PchSpiBar0           SPI MMIO address
>  
>    @retval TRUE                    SPI cycle completed on the interface.
> @@ -327,7 +447,7 @@ WaitForSpiCycleComplete (
>  BOOLEAN
>  STATIC
>  WaitForScipNoClear (
> -  IN      PCH_SPI_PROTOCOL    *This,
> +  IN      PCH_SPI2_PROTOCOL   *This,
>    IN      UINTN               PchSpiBar0
>    )
>  {
> @@ -352,87 +472,11 @@ WaitForScipNoClear (
>    return FALSE;
>  }
>  
> -/**
> -  This function sets the FDONE and optionally FCERR bits in the HSFS_CTL register
> -
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> -  @param[in] PchSpiBar0           SPI MMIO address
> -  @param[in] SetErrorBit          Set to TRUE to set the FCERR bit
> -
> -**/
> -VOID
> -STATIC
> -SetHsfscFdone (
> -  IN      PCH_SPI_PROTOCOL    *This,
> -  IN      UINTN               PchSpiBar0,
> -  IN      BOOLEAN             SetFcErrorBit
> -  )
> -{
> -  EFI_STATUS    Status;
> -  UINT32        HardwareSpiAddr;
> -  UINT32        FlashRegionSize;
> -  UINT32        Index;
> -  UINT8         DataCount;
> -
> -  Status = SpiProtocolGetRegionAddress (This, FlashRegionBios, &HardwareSpiAddr, &FlashRegionSize);
> -  if (EFI_ERROR (Status)) {
> -    return;
> -  }
> -
> -  //
> -  // Clear FDONE and FCERR
> -  //
> -  MmioWrite8 (PchSpiBar0 + R_SPI_MEM_HSFSC, B_SPI_MEM_HSFSC_FCERR | B_SPI_MEM_HSFSC_FDONE);
> -
> -  //
> -  // Fill data buffer
> -  //
> -  if (SetFcErrorBit) {
> -    for (Index = 0; Index < 64; Index += sizeof (UINT32)) {
> -      MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FDATA00 + Index, 0xFFFFFFFF);
> -    }
> -  }
> -
> -  //
> -  // Set the Flash Address
> -  //
> -  MmioWrite32 (
> -    (PchSpiBar0 + R_SPI_MEM_FADDR),
> -    (UINT32) (HardwareSpiAddr & B_SPI_MEM_FADDR_MASK)
> -    );
> -  //
> -  // Set Data count, Flash cycle, and Set Go bit to start a cycle
> -  //
> -  if (SetFcErrorBit) {
> -    DataCount = 0x3F;
> -  } else {
> -    DataCount = 0;
> -  }
> -  MmioAndThenOr32 (
> -    PchSpiBar0 + R_SPI_MEM_HSFSC,
> -    (UINT32) (~(B_SPI_MEM_HSFSC_FDBC_MASK | B_SPI_MEM_HSFSC_CYCLE_MASK)),
> -    (UINT32) (((DataCount << N_SPI_MEM_HSFSC_FDBC) & B_SPI_MEM_HSFSC_FDBC_MASK) |
> -              (V_SPI_MEM_HSFSC_CYCLE_READ << N_SPI_MEM_HSFSC_CYCLE)             |
> -              B_SPI_MEM_HSFSC_CYCLE_FGO)
> -    );
> -
> -  if (SetFcErrorBit) {
> -    //
> -    // Intentionally write to FDATA while a cycle is in progress to generate an error
> -    //
> -    for (Index = 0; Index < 64; Index += sizeof (UINT32)) {
> -      MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FDATA00 + Index, 0x0);
> -    }
> -  }
> -
> -  WaitForScipNoClear (This, PchSpiBar0);
> -}
> -
>  /**
>    This function sends the programmed SPI command to the device.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> -  @param[in] SpiRegionType        The SPI Region type for flash cycle which is listed in the Descriptor
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
> +  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
>    @param[in] FlashCycleType       The Flash SPI cycle type list in HSFC (Hardware Sequencing Flash Control Register) register
>    @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
>    @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
> @@ -446,8 +490,8 @@ SetHsfscFdone (
>  STATIC
>  EFI_STATUS
>  SendSpiCmd (
> -  IN     PCH_SPI_PROTOCOL   *This,
> -  IN     FLASH_REGION_TYPE  FlashRegionType,
> +  IN     PCH_SPI2_PROTOCOL  *This,
> +  IN     EFI_GUID           *FlashRegionGuid,
>    IN     FLASH_CYCLE_TYPE   FlashCycleType,
>    IN     UINT32             Address,
>    IN     UINT32             ByteCount,
> @@ -564,7 +608,7 @@ SendSpiCmd (
>      }
>    }
>  
> -  Status = SpiProtocolGetRegionAddress (This, FlashRegionType, &HardwareSpiAddr, &FlashRegionSize);
> +  Status = SpiProtocolGetRegionAddress (This, FlashRegionGuid, &HardwareSpiAddr, &FlashRegionSize);
>    if (EFI_ERROR (Status)) {
>      goto SendSpiCmdEnd;
>    }
> @@ -751,31 +795,6 @@ SendSpiCmd (
>    } while (ByteCount > 0);
>  
>  SendSpiCmdEnd:
> -  //
> -  // Restore SPI controller state
> -  //
> -  if (RestoreState) {
> -    if (HsfscFdoneSave) {
> -      SetHsfscFdone (This, PchSpiBar0, HsfscFcerrSave);
> -    }
> -    MmioAndThenOr32 (
> -      PchSpiBar0 + R_SPI_MEM_HSFSC,
> -      (UINT32)  ~(B_SPI_MEM_HSFSC_SAVE_MASK |
> -                  B_SPI_MEM_HSFSC_SAF_CE    |   // This bit clears when set to 1, ensure 0 is written
> -                  B_SPI_MEM_HSFSC_SAF_LE    |   // This bit clears when set to 1, ensure 0 is written
> -                  B_SPI_MEM_HSFSC_SAF_DLE   |   // This bit clears when set to 1, ensure 0 is written
> -                  B_SPI_MEM_HSFSC_SAF_ERROR |   // This bit clears when set to 1, ensure 0 is written
> -                  B_SPI_MEM_HSFSC_AEL       |   // This bit clears when set to 1, ensure 0 is written
> -                  B_SPI_MEM_HSFSC_FCERR     |   // This bit clears when set to 1, ensure 0 is written
> -                  B_SPI_MEM_HSFSC_FDONE),       // This bit clears when set to 1, ensure 0 is written
> -      HsfscSave
> -      );
> -    MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FADDR, FaddrSave);
> -    for (Index = 0; Index < 64; Index += sizeof (UINT32)) {
> -      MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FDATA00 + Index, FdataSave[Index >> 2]);
> -    }
> -  }
> -
>    //
>    // Restore the settings for SPI Prefetching and Caching and enable BIOS Write Protect
>    //
> @@ -801,8 +820,8 @@ SendSpiCmdEnd:
>  /**
>    Read data from the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> -  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
> +  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
>    @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
>    @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
>    @param[out] Buffer              The Pointer to caller-allocated buffer containing the dada received.
> @@ -815,8 +834,8 @@ SendSpiCmdEnd:
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashRead (
> -  IN     PCH_SPI_PROTOCOL   *This,
> -  IN     FLASH_REGION_TYPE  FlashRegionType,
> +  IN     PCH_SPI2_PROTOCOL  *This,
> +  IN     EFI_GUID           *FlashRegionGuid,
>    IN     UINT32             Address,
>    IN     UINT32             ByteCount,
>    OUT    UINT8              *Buffer
> @@ -829,7 +848,7 @@ SpiProtocolFlashRead (
>    //
>    Status = SendSpiCmd (
>               This,
> -             FlashRegionType,
> +             FlashRegionGuid,
>               FlashCycleRead,
>               Address,
>               ByteCount,
> @@ -841,8 +860,8 @@ SpiProtocolFlashRead (
>  /**
>    Write data to the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> -  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
> +  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
>    @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
>    @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
>    @param[in] Buffer               Pointer to caller-allocated buffer containing the data sent during the SPI cycle.
> @@ -854,8 +873,8 @@ SpiProtocolFlashRead (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashWrite (
> -  IN     PCH_SPI_PROTOCOL   *This,
> -  IN     FLASH_REGION_TYPE  FlashRegionType,
> +  IN     PCH_SPI2_PROTOCOL  *This,
> +  IN     EFI_GUID           *FlashRegionGuid,
>    IN     UINT32             Address,
>    IN     UINT32             ByteCount,
>    IN     UINT8              *Buffer
> @@ -868,7 +887,7 @@ SpiProtocolFlashWrite (
>    //
>    Status = SendSpiCmd (
>               This,
> -             FlashRegionType,
> +             FlashRegionGuid,
>               FlashCycleWrite,
>               Address,
>               ByteCount,
> @@ -880,8 +899,8 @@ SpiProtocolFlashWrite (
>  /**
>    Erase some area on the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> -  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
> +  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
>    @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
>    @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
>  
> @@ -892,8 +911,8 @@ SpiProtocolFlashWrite (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashErase (
> -  IN     PCH_SPI_PROTOCOL   *This,
> -  IN     FLASH_REGION_TYPE  FlashRegionType,
> +  IN     PCH_SPI2_PROTOCOL  *This,
> +  IN     EFI_GUID           *FlashRegionGuid,
>    IN     UINT32             Address,
>    IN     UINT32             ByteCount
>    )
> @@ -905,7 +924,7 @@ SpiProtocolFlashErase (
>    //
>    Status = SendSpiCmd (
>               This,
> -             FlashRegionType,
> +             FlashRegionGuid,
>               FlashCycleErase,
>               Address,
>               ByteCount,
> @@ -917,7 +936,7 @@ SpiProtocolFlashErase (
>  /**
>    Read SFDP data from the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] ComponentNumber      The Componen Number for chip select
>    @param[in] Address              The starting byte address for SFDP data read.
>    @param[in] ByteCount            Number of bytes in SFDP data portion of the SPI cycle
> @@ -932,20 +951,53 @@ SpiProtocolFlashErase (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashReadSfdp (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT8              ComponentNumber,
>    IN     UINT32             Address,
>    IN     UINT32             ByteCount,
>    OUT    UINT8              *SfdpData
>    )
>  {
> -  return EFI_SUCCESS;
> +  SPI_INSTANCE      *SpiInstance;
> +  EFI_STATUS        Status;
> +  UINT32            FlashAddress;
> +
> +  if (SpiIsSafModeActive ()) {
> +    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
> +    return EFI_UNSUPPORTED;
> +  }
> +
> +  SpiInstance       = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
> +  Status            = EFI_SUCCESS;
> +
> +  if (ComponentNumber > SpiInstance->NumberOfComponents) {
> +    ASSERT (FALSE);
> +    return EFI_INVALID_PARAMETER;
> +  }
> +
> +  FlashAddress = 0;
> +  if (ComponentNumber == FlashComponent1) {
> +    FlashAddress = SpiInstance->Component1StartAddr;
> +  }
> +  FlashAddress += Address;
> +  //
> +  // Sends the command to the SPI interface to execute.
> +  //
> +  Status = SendSpiCmd (
> +             This,
> +             &gFlashRegionAllGuid,
> +             FlashCycleReadSfdp,
> +             FlashAddress,
> +             ByteCount,
> +             SfdpData
> +             );
> +  return Status;
>  }
>  
>  /**
>    Read Jedec Id from the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] ComponentNumber      The Componen Number for chip select
>    @param[in] ByteCount            Number of bytes in JedecId data portion of the SPI cycle, the data size is 3 typically
>    @param[out] JedecId             The Pointer to caller-allocated buffer containing JEDEC ID received
> @@ -959,19 +1011,52 @@ SpiProtocolFlashReadSfdp (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashReadJedecId (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT8              ComponentNumber,
>    IN     UINT32             ByteCount,
>    OUT    UINT8              *JedecId
>    )
>  {
> -  return EFI_SUCCESS;
> +  SPI_INSTANCE      *SpiInstance;
> +  EFI_STATUS        Status;
> +  UINT32            Address;
> +
> +  if (SpiIsSafModeActive ()) {
> +    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
> +    return EFI_UNSUPPORTED;
> +  }
> +
> +  SpiInstance       = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
> +  Status            = EFI_SUCCESS;
> +
> +  if (ComponentNumber > SpiInstance->NumberOfComponents) {
> +    ASSERT (FALSE);
> +    return EFI_INVALID_PARAMETER;
> +  }
> +
> +  Address = 0;
> +  if (ComponentNumber == FlashComponent1) {
> +    Address = SpiInstance->Component1StartAddr;
> +  }
> +
> +  //
> +  // Sends the command to the SPI interface to execute.
> +  //
> +  Status = SendSpiCmd (
> +             This,
> +             &gFlashRegionAllGuid,
> +             FlashCycleReadJedecId,
> +             Address,
> +             ByteCount,
> +             JedecId
> +             );
> +  return Status;
>  }
>  
>  /**
>    Write the status register in the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
>    @param[in] StatusValue          The Pointer to caller-allocated buffer containing the value of Status register writing
>  
> @@ -983,18 +1068,36 @@ SpiProtocolFlashReadJedecId (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashWriteStatus (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT32             ByteCount,
>    IN     UINT8              *StatusValue
>    )
>  {
> -  return EFI_SUCCESS;
> +  EFI_STATUS        Status;
> +
> +  if (SpiIsSafModeActive ()) {
> +    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
> +    return EFI_UNSUPPORTED;
> +  }
> +
> +  //
> +  // Sends the command to the SPI interface to execute.
> +  //
> +  Status = SendSpiCmd (
> +             This,
> +             &gFlashRegionAllGuid,
> +             FlashCycleWriteStatus,
> +             0,
> +             ByteCount,
> +             StatusValue
> +             );
> +  return Status;
>  }
>  
>  /**
>    Read status register in the flash part.
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
>    @param[out] StatusValue         The Pointer to caller-allocated buffer containing the value of Status register received.
>  
> @@ -1006,19 +1109,37 @@ SpiProtocolFlashWriteStatus (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolFlashReadStatus (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT32             ByteCount,
>    OUT    UINT8              *StatusValue
>    )
>  {
> -  return EFI_SUCCESS;
> +  EFI_STATUS        Status;
> +
> +  if (SpiIsSafModeActive ()) {
> +    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
> +    return EFI_UNSUPPORTED;
> +  }
> +
> +  //
> +  // Sends the command to the SPI interface to execute.
> +  //
> +  Status = SendSpiCmd (
> +             This,
> +             &gFlashRegionAllGuid,
> +             FlashCycleReadStatus,
> +             0,
> +             ByteCount,
> +             StatusValue
> +             );
> +  return Status;
>  }
>  
>  /**
>    Get the SPI region base and size, based on the enum type
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> -  @param[in] FlashRegionType      The Flash Region type for for the base address which is listed in the Descriptor.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
> +  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
>    @param[out] BaseAddress         The Flash Linear Address for the Region 'n' Base
>    @param[out] RegionSize          The size for the Region 'n'
>  
> @@ -1029,18 +1150,24 @@ SpiProtocolFlashReadStatus (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolGetRegionAddress (
> -  IN     PCH_SPI_PROTOCOL   *This,
> -  IN     FLASH_REGION_TYPE  FlashRegionType,
> +  IN     PCH_SPI2_PROTOCOL  *This,
> +  IN     EFI_GUID           *FlashRegionGuid,
>    OUT    UINT32             *BaseAddress,
>    OUT    UINT32             *RegionSize
>    )
>  {
> +  EFI_STATUS          Status;
> +  FLASH_REGION_TYPE   FlashRegionType;
>    SPI_INSTANCE    *SpiInstance;
>    UINTN           PchSpiBar0;
>    UINT32          ReadValue;
>  
>    SpiInstance     = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
>  
> +  Status = GetFlashRegionType (FlashRegionGuid, &FlashRegionType);
> +  if (EFI_ERROR (Status)) {
> +    return EFI_INVALID_PARAMETER;
> +  }
>    if (FlashRegionType >= FlashRegionMax) {
>      return EFI_INVALID_PARAMETER;
>    }
> @@ -1053,10 +1180,8 @@ SpiProtocolGetRegionAddress (
>  
>    PchSpiBar0      = AcquireSpiBar0 (SpiInstance);
>  
> -  ReadValue = MmioRead32 (PchSpiBar0 + (R_SPI_MEM_FREG0_FLASHD + (S_SPI_MEM_FREGX * ((UINT32) FlashRegionType))));
> -
>    ReleaseSpiBar0 (SpiInstance);
> -
> +  ReadValue = MmioRead32 (PchSpiBar0 + (R_SPI_MEM_FREG0_FLASHD + (S_SPI_MEM_FREGX * ((UINT32) FlashRegionType))));
>    //
>    // If the region is not used, the Region Base is 7FFFh and Region Limit is 0000h
>    //
> @@ -1077,7 +1202,7 @@ SpiProtocolGetRegionAddress (
>  /**
>    Read PCH Soft Strap Values
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] SoftStrapAddr        PCH Soft Strap address offset from FPSBA.
>    @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle
>    @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing PCH Soft Strap Value.
> @@ -1091,19 +1216,51 @@ SpiProtocolGetRegionAddress (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolReadPchSoftStrap (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT32             SoftStrapAddr,
>    IN     UINT32             ByteCount,
>    OUT    VOID               *SoftStrapValue
>    )
>  {
> -  return EFI_SUCCESS;
> +  SPI_INSTANCE      *SpiInstance;
> +  UINT32            StrapFlashAddr;
> +  EFI_STATUS        Status;
> +
> +  SpiInstance     = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
> +
> +  if (ByteCount == 0) {
> +    *(UINT16 *) SoftStrapValue = SpiInstance->PchStrapSize;
> +    return EFI_SUCCESS;
> +  }
> +
> +  if ((SoftStrapAddr + ByteCount) > (UINT32) SpiInstance->PchStrapSize) {
> +    ASSERT (FALSE);
> +    return EFI_INVALID_PARAMETER;
> +  }
> +
> +  //
> +  // PCH Strap Flash Address = FPSBA + RamAddr
> +  //
> +  StrapFlashAddr = SpiInstance->PchStrapBaseAddr + SoftStrapAddr;
> +
> +  //
> +  // Read PCH Soft straps from using execute command
> +  //
> +  Status = SendSpiCmd (
> +             This,
> +              &gFlashRegionDescriptorGuid,
> +             FlashCycleRead,
> +             StrapFlashAddr,
> +             ByteCount,
> +             SoftStrapValue
> +             );
> +  return Status;
>  }
>  
>  /**
>    Read CPU Soft Strap Values
>  
> -  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
> +  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
>    @param[in] SoftStrapAddr        CPU Soft Strap address offset from FCPUSBA.
>    @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle.
>    @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing CPU Soft Strap Value.
> @@ -1117,11 +1274,43 @@ SpiProtocolReadPchSoftStrap (
>  EFI_STATUS
>  EFIAPI
>  SpiProtocolReadCpuSoftStrap (
> -  IN     PCH_SPI_PROTOCOL   *This,
> +  IN     PCH_SPI2_PROTOCOL  *This,
>    IN     UINT32             SoftStrapAddr,
>    IN     UINT32             ByteCount,
>    OUT    VOID               *SoftStrapValue
>    )
>  {
> -  return EFI_SUCCESS;
> +  SPI_INSTANCE      *SpiInstance;
> +  UINT32            StrapFlashAddr;
> +  EFI_STATUS        Status;
> +
> +  SpiInstance     = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
> +
> +  if (ByteCount == 0) {
> +    *(UINT16 *) SoftStrapValue = SpiInstance->CpuStrapSize;
> +    return EFI_SUCCESS;
> +  }
> +
> +  if ((SoftStrapAddr + ByteCount) > (UINT32) SpiInstance->CpuStrapSize) {
> +    ASSERT (FALSE);
> +    return EFI_INVALID_PARAMETER;
> +  }
> +
> +  //
> +  // CPU Strap Flash Address = FCPUSBA + RamAddr
> +  //
> +  StrapFlashAddr = SpiInstance->CpuStrapBaseAddr + SoftStrapAddr;
> +
> +  //
> +  // Read Cpu Soft straps from using execute command
> +  //
> +  Status = SendSpiCmd (
> +             This,
> +             &gFlashRegionDescriptorGuid,
> +             FlashCycleRead,
> +             StrapFlashAddr,
> +             ByteCount,
> +             SoftStrapValue
> +             );
> +  return Status;
>  }
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c
> index 2dd80eba..68190b2b 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c
> @@ -13,10 +13,11 @@
>  #include <Library/BaseMemoryLib.h>
>  #include <Library/SmmServicesTableLib.h>
>  #include <Library/PciSegmentLib.h>
> -#include <Protocol/Spi.h>
> +#include <Protocol/Spi2.h>
>  #include <Protocol/SmmCpu.h>
>  #include <Library/SpiCommonLib.h>
>  #include <PchReservedResources.h>
> +#include <Library/SmmPchPrivateLib.h>
>  #include <Library/PchPciBdfLib.h>
>  #include <IndustryStandard/Pci30.h>
>  #include <Register/PchRegs.h>
> @@ -82,8 +83,8 @@ SpiExitBootServicesCallback (
>        - Documented in System Management Mode Core Interface Specification .
>  
>    - @result
> -    The SPI SMM driver produces @link _PCH_SPI_PROTOCOL PCH_SPI_PROTOCOL @endlink with GUID
> -    gPchSmmSpiProtocolGuid which is different from SPI RUNTIME driver.
> +    The SPI SMM driver produces @link _PCH_SPI2_PROTOCOL PCH_SPI2_PROTOCOL @endlink with GUID
> +    gPchSmmSpi2ProtocolGuid which is different from SPI RUNTIME driver.
>  
>    - <b>Integration Check List</b>\n
>      - This driver supports Descriptor Mode only.
> @@ -163,11 +164,11 @@ InstallPchSpi (
>    }
>  
>    //
> -  // Install the SMM PCH_SPI_PROTOCOL interface
> +  // Install the SMM PCH_SPI2_PROTOCOL interface
>    //
>    Status = gSmst->SmmInstallProtocolInterface (
>                      &(mSpiInstance->Handle),
> -                    &gPchSmmSpiProtocolGuid,
> +                    &gPchSmmSpi2ProtocolGuid,
>                      EFI_NATIVE_INTERFACE,
>                      &(mSpiInstance->SpiProtocol)
>                      );
> @@ -303,6 +304,19 @@ DisableBiosWriteProtect (
>      B_SPI_CFG_BC_WPD
>      );
>  
> +  ///
> +  /// the BIOS Region can only be updated by following the steps bellow:
> +  ///  - Once all threads enter SMM
> +  ///  - Read memory location FED30880h OR with 00000001h, place the result in EAX,
> +  ///    and write data to lower 32 bits of MSR 1FEh (sample code available)
> +  ///  - Set BIOSWE bit (SPI PCI Offset DCh [0]) = 1b
> +  ///  - Modify BIOS Region
> +  ///  - Clear BIOSWE bit (SPI PCI Offset DCh [0]) = 0b
> +  ///
> +  if ((PciSegmentRead8 (SpiBaseAddress + R_SPI_CFG_BC) & B_SPI_CFG_BC_EISS) != 0) {
> +    PchSetInSmmSts ();
> +  }
> +
>    return EFI_SUCCESS;
>  }
>  
> @@ -327,6 +341,12 @@ EnableBiosWriteProtect (
>      (UINT8) (~B_SPI_CFG_BC_WPD)
>      );
>  
> +  ///
> +  /// Check if EISS bit is set
> +  ///
> +  if (((PciSegmentRead8 (SpiBaseAddress + R_SPI_CFG_BC)) & B_SPI_CFG_BC_EISS) == B_SPI_CFG_BC_EISS) {
> +    PchClearInSmmSts ();
> +  }
>  }
>  
>  /**
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf
> index 78913423..445f4af8 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf
> @@ -24,19 +24,20 @@ UefiBootServicesTableLib
>  BaseLib
>  SmmServicesTableLib
>  SpiCommonLib
> +SmmPchPrivateLib
>  PchPciBdfLib
>  
>  [Packages]
>  MdePkg/MdePkg.dec
>  AlderlakeSiliconPkg/SiPkg.dec
> -
> +IntelSiliconPkg/IntelSiliconPkg.dec
>  
>  [Sources]
>  Spi.c
>  
>  
>  [Protocols]
> -gPchSmmSpiProtocolGuid                ## PRODUCES
> +gPchSmmSpi2ProtocolGuid                ## PRODUCES
>  gEfiSmmCpuProtocolGuid                ## CONSUMES
>  gEdkiiSmmExitBootServicesProtocolGuid ## CONSUMES
>  
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h b/Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h
> new file mode 100644
> index 00000000..63857863
> --- /dev/null
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h
> @@ -0,0 +1,27 @@
> +/** @file
> +  Header file for private PCH SMM Lib.
> +
> +  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
> +  SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +#ifndef _SMM_PCH_PRIVATE_LIB_H_
> +#define _SMM_PCH_PRIVATE_LIB_H_
> +
> +/**
> +  Set InSmm.Sts bit
> +**/
> +VOID
> +PchSetInSmmSts (
> +  VOID
> +  );
> +
> +/**
> +  Clear InSmm.Sts bit
> +**/
> +VOID
> +PchClearInSmmSts (
> +  VOID
> +  );
> +
> +#endif // _SMM_PCH_PRIVATE_LIB_H_
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c
> new file mode 100644
> index 00000000..0436a423
> --- /dev/null
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c
> @@ -0,0 +1,61 @@
> +/** @file
> +  PCH SMM private lib.
> +
> +  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
> +  SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#include <Uefi/UefiBaseType.h>
> +#include <Library/BaseLib.h>
> +#include <Library/IoLib.h>
> +#include <Library/DebugLib.h>
> +#include <Library/CpuPlatformLib.h>
> +#include <CpuRegs.h>
> +#include <Register/CommonMsr.h>
> +#include <Register/PttPtpRegs.h>
> +
> +
> +/**
> +  Set InSmm.Sts bit
> +**/
> +VOID
> +PchSetInSmmSts (
> +  VOID
> +  )
> +{
> +  UINT32      Data32;
> +
> +  ///
> +  /// Read memory location FED30880h OR with 00000001h, place the result in EAX,
> +  /// and write data to lower 32 bits of MSR 1FEh (sample code available)
> +  ///
> +  Data32 = MmioRead32 (R_LT_UCS);
> +  AsmWriteMsr32 (MSR_SPCL_CHIPSET_USAGE, Data32 | BIT0);
> +  ///
> +  /// Read FED30880h back to ensure the setting went through.
> +  ///
> +  Data32 = MmioRead32 (R_LT_UCS);
> +}
> +
> +/**
> +  Clear InSmm.Sts bit
> +**/
> +VOID
> +PchClearInSmmSts (
> +  VOID
> +  )
> +{
> +  UINT32      Data32;
> +
> +  ///
> +  /// Read memory location FED30880h AND with FFFFFFFEh, place the result in EAX,
> +  /// and write data to lower 32 bits of MSR 1FEh (sample code available)
> +  ///
> +  Data32 = MmioRead32 (R_LT_UCS);
> +  AsmWriteMsr32 (MSR_SPCL_CHIPSET_USAGE, Data32 & (UINT32) (~BIT0));
> +  ///
> +  /// Read FED30880h back to ensure the setting went through.
> +  ///
> +  Data32 = MmioRead32 (R_LT_UCS);
> +}
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf
> new file mode 100644
> index 00000000..3c62b9b8
> --- /dev/null
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf
> @@ -0,0 +1,32 @@
> +## @file
> +#  PCH SMM private lib.
> +#
> +#  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
> +#  SPDX-License-Identifier: BSD-2-Clause-Patent
> +#
> +##
> +
> +
> +[Defines]
> +INF_VERSION = 0x00010017
> +BASE_NAME = SmmPchPrivateLib
> +FILE_GUID = FE6495FB-7AA9-4A24-BF3E-4698F7BCE0EE
> +VERSION_STRING = 1.0
> +MODULE_TYPE = DXE_SMM_DRIVER
> +LIBRARY_CLASS = SmmPchPrivateLib
> +
> +
> +[LibraryClasses]
> +BaseLib
> +IoLib
> +DebugLib
> +CpuPlatformLib
> +
> +
> +[Packages]
> +MdePkg/MdePkg.dec
> +AlderlakeSiliconPkg/SiPkg.dec
> +
> +
> +[Sources]
> +SmmPchPrivateLib.c
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc b/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc
> index 37876cbf..238473c2 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc
> @@ -11,6 +11,11 @@
>  !include $(PLATFORM_SI_PACKAGE)/Fru/AdlCpu/DxeLib.dsc
>  !include $(PLATFORM_SI_PACKAGE)/Fru/AdlPch/DxeLib.dsc
>  
> +#
> +# Pch
> +#
> + SmmPchPrivateLib|$(PLATFORM_SI_PACKAGE)/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf
> +
>  #
>  # Common
>  #
> diff --git a/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec b/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec
> index ce9cfe59..aafce7a6 100644
> --- a/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec
> +++ b/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec
> @@ -33,6 +33,7 @@ IpBlock/HostBridge/IncludePrivate
>  
>  # Cpu
>  Cpu/IncludePrivate
> +Pch/IncludePrivate
>  
>  IncludePrivate
>  
> @@ -355,6 +356,7 @@ PchInfoLib|Pch/Include/Library/PchInfoLib.h
>  PchPcieRpLib|Include/Library/PchPcieRpLib.h
>  PchPcrLib|Include/Library/PchPcrLib.h
>  PchSbiAccessLib|IpBlock/P2sb/IncludePrivate/Library/PchSbiAccessLib.h
> +SmmPchPrivateLib|Pch/IncludePrivate/Library/SmmPchPrivateLib.h
>  PchPciBdfLib|Pch/Include/Library/PchPciBdfLib.h
>  PchRasLib|Pch/Include/Library/PchRasLib.h
>  PchRtcLib|Pch/Include/Library/PchRtcLib.h
> @@ -394,7 +396,7 @@ OcPlatformLib|Include/Library/OcPlatformLib.h
>  PeiSpsPreMemPolicyLib|Include/Library/PeiSpsPreMemPolicyLib.h
>  PmcLib|Include/Library/PmcLib.h
>  PmcSsramLib|Include/Library/PmcSsramLib.h
> -SpiLib|Include/Library/SpiLib.h
> +SpiAccessLib|Include/Library/SpiAccessLib.h
>  SpsDxeLib|Include/Library/SpsDxeLib.h
>  SpsGetDxeConfigBlockLib|Include/Library/SpsGetDxeConfigBlock.h
>  MeGetPeiConfigBlock|Include/Library/MeGetConfigBlock.h
> -- 
> 2.26.2.windows.1
> 
> 
> 
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> -=-=-=-=-=-=
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^ permalink raw reply	[flat|nested] 6+ messages in thread

* [edk2-devel] [PATCH] AlderlakeSiliconPkg: Update for SPI2 Protocol and Identify flash regions by GUID
@ 2024-04-09  6:11 dorax.hsueh
  0 siblings, 0 replies; 6+ messages in thread
From: dorax.hsueh @ 2024-04-09  6:11 UTC (permalink / raw)
  To: devel
  Cc: DoraX Hsueh, Sai Chaganty, Rosen Chuang, Saloni Kasbekar,
	Haoyu Tang, Nate DeSimone

From: DoraX Hsueh <dorax.hsueh@intel.com>

https://bugzilla.tianocore.org/show_bug.cgi?id=4664

1. Updates references to the "PCH_SPI_PROTOCOL" to instead refer to "PCH_SPI2_PROTOCOL".
2. Updates the library to identify flash regions by GUID and internally
map the GUID entries to values specific to AlderlakeSiliconPkg.
3. Libs/modules that need to reference IntelSiliconPkg are updated.
4. Add B_TCO_IO_TCO1_CNT_TMR_HLT define.

Cc: Sai Chaganty <rangasai.v.chaganty@intel.com>
Cc: Rosen Chuang <rosen.chuang@intel.com>
Cc: Saloni Kasbekar <saloni.kasbekar@intel.com>
Cc: Haoyu Tang <haoyu.tang@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Signed-off-by: DoraX Hsueh <dorax.hsueh@intel.com>
---
 .../Cpu/Include/Register/CommonMsr.h          |   4 +
 .../Fru/AdlPch/CommonLib.dsc                  |   2 +-
 .../AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc |   2 -
 .../Include/Library/SpiAccessLib.h            |  44 ++
 .../Include/Register/PttPtpRegs.h             |  26 +
 .../Include/Register/TcoRegs.h                |   1 +
 .../Spi/IncludePrivate/Library/SpiCommonLib.h |  60 +--
 .../Spi/IncludePrivate/Register/SpiRegs.h     |   8 +-
 .../PeiDxeSmmSpiAccessLib.inf                 |  33 ++
 .../PeiDxeSmmSpiAccessLib/SpiAccessLib.c      |  75 +++
 .../IpBlock/Spi/Library/PeiSpiLib/PchSpi.c    |   2 +-
 .../Spi/Library/PeiSpiLib/PeiSpiLib.inf       |   2 +-
 .../BaseSpiCommonLib/BaseSpiCommonLib.inf     |  19 +-
 .../BaseSpiCommonLib/SpiCommon.c              | 491 ++++++++++++------
 .../AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c |  30 +-
 .../IpBlock/Spi/Smm/SpiSmm.inf                |   5 +-
 .../IncludePrivate/Library/SmmPchPrivateLib.h |  27 +
 .../SmmPchPrivateLib/SmmPchPrivateLib.c       |  61 +++
 .../SmmPchPrivateLib/SmmPchPrivateLib.inf     |  32 ++
 .../Product/Alderlake/SiPkgDxeLib.dsc         |   5 +
 Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec   |   4 +-
 21 files changed, 733 insertions(+), 200 deletions(-)
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c
 create mode 100644 Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf

diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h b/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h
index caa0e67b..44a476c0 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Cpu/Include/Register/CommonMsr.h
@@ -56,5 +56,9 @@ typedef union {
 
 } MSR_CORE_THREAD_COUNT_REGISTER;
 
+/**
+  Special Chipset Usage MSR
+**/
+#define MSR_SPCL_CHIPSET_USAGE 0x000001FE
 
 #endif /* _COMMONMSR_h */
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc
index 3f508f83..ee5800a9 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/CommonLib.dsc
@@ -11,7 +11,7 @@
 
   EspiLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Espi/Library/PeiDxeSmmEspiLib/PeiDxeSmmEspiLib.inf
 
-
+  SpiAccessLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
   PmcLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Pmc/Library/PeiDxeSmmPmcLib/PeiDxeSmmPmcLib.inf
   PmcPrivateLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Pmc/LibraryPrivate/PeiDxeSmmPmcPrivateLib/PeiDxeSmmPmcPrivateLib.inf
   SpiCommonLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc
index ebe2bbfd..cbaf8e37 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Fru/AdlPch/PeiLib.dsc
@@ -5,8 +5,6 @@
 #   SPDX-License-Identifier: BSD-2-Clause-Patent
 ##
 
-  SpiLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
-
   GpioHelpersLib|$(PLATFORM_SI_PACKAGE)/IpBlock/Gpio/LibraryPrivate/PeiGpioHelpersLib/PeiGpioHelpersLib.inf
 
 
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h b/Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h
new file mode 100644
index 00000000..6e7f48fe
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Include/Library/SpiAccessLib.h
@@ -0,0 +1,44 @@
+/** @file
+  SPI library header for abstraction of SPI HW registers accesses
+
+  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#ifndef _SPI_ACCESS_LIB_H_
+#define _SPI_ACCESS_LIB_H_
+
+
+/**
+  Returns SPI BAR0 value
+
+  @retval  UINT32  PCH SPI BAR0 value
+**/
+UINT32
+SpiGetBar0 (
+  VOID
+  );
+
+/**
+  Checks if PCH SPI Controler is present and available
+
+  @retval TRUE    PCH SPI controller is avaialable
+  @retval FALSE   PCH SPI controller is not available
+**/
+BOOLEAN
+SpiIsControllerAvailable (
+  VOID
+  );
+
+/**
+  Checks if Device Attached Flash (DAF) mode is active
+
+  @retval TRUE    SAF mode is active
+  @retval FALSE   SAF mode is not active
+**/
+BOOLEAN
+SpiIsSafModeActive (
+  VOID
+  );
+
+#endif // _SPI_ACCESS_LIB_H_
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h b/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h
new file mode 100644
index 00000000..df9905a0
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/PttPtpRegs.h
@@ -0,0 +1,26 @@
+/** @file
+  Register definitions for PTT HCI (Platform Trust Technology - Host Controller Interface).
+
+  Conventions:
+
+  - Prefixes:
+    Definitions beginning with "R_" are registers
+    Definitions beginning with "B_" are bits within registers
+    Definitions beginning with "V_" are meaningful values of bits within the registers
+    Definitions beginning with "S_" are register sizes
+    Definitions beginning with "N_" are the bit position
+
+  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#ifndef _PTT_HCI_REGS_H_
+#define _PTT_HCI_REGS_H_
+
+///
+/// LT public space registers
+///
+#define R_LT_UCS                           0xFED30880
+
+
+#endif
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/TcoRegs.h b/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/TcoRegs.h
index c3afcd50..081cf896 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/TcoRegs.h
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Include/Register/TcoRegs.h
@@ -62,6 +62,7 @@
 
 #define R_TCO_IO_TCO1_CNT                            0x08
 #define S_TCO_IO_TCO1_CNT                            2
+#define B_TCO_IO_TCO1_CNT_TMR_HLT                    BIT11
 #define N_TCO_IO_TCO1_CNT_NMI2SMI_EN                 9
 
 #define R_TCO_IO_TCO2_CNT                            0x0A
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h
index e13718c9..dc663198 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Library/SpiCommonLib.h
@@ -7,7 +7,7 @@
 #ifndef _SPI_COMMON_LIB_H_
 #define _SPI_COMMON_LIB_H_
 
-#include <Protocol/Spi.h>
+#include <Protocol/Spi2.h>
 
 //
 // Maximum time allowed while waiting the SPI cycle to complete
@@ -49,7 +49,7 @@ typedef enum {
 typedef struct {
   UINT32                Signature;
   EFI_HANDLE            Handle;
-  PCH_SPI_PROTOCOL      SpiProtocol;
+  PCH_SPI2_PROTOCOL     SpiProtocol;
   UINT16                PchAcpiBase;
   UINT64                PchSpiBase;
   UINT8                 ReadPermission;
@@ -157,8 +157,8 @@ IsSpiControllerSaveRestoreEnabled (
 /**
   Read data from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
   @param[out] Buffer              The Pointer to caller-allocated buffer containing the dada received.
@@ -171,8 +171,8 @@ IsSpiControllerSaveRestoreEnabled (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashRead (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
   OUT    UINT8              *Buffer
@@ -181,8 +181,8 @@ SpiProtocolFlashRead (
 /**
   Write data to the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
   @param[in] Buffer               Pointer to caller-allocated buffer containing the data sent during the SPI cycle.
@@ -194,8 +194,8 @@ SpiProtocolFlashRead (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashWrite (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
   IN     UINT8              *Buffer
@@ -204,8 +204,8 @@ SpiProtocolFlashWrite (
 /**
   Erase some area on the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
 
@@ -216,8 +216,8 @@ SpiProtocolFlashWrite (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashErase (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount
   );
@@ -225,7 +225,7 @@ SpiProtocolFlashErase (
 /**
   Read SFDP data from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ComponentNumber      The Componen Number for chip select
   @param[in] Address              The starting byte address for SFDP data read.
   @param[in] ByteCount            Number of bytes in SFDP data portion of the SPI cycle
@@ -239,7 +239,7 @@ SpiProtocolFlashErase (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadSfdp (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT8              ComponentNumber,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
@@ -249,7 +249,7 @@ SpiProtocolFlashReadSfdp (
 /**
   Read Jedec Id from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ComponentNumber      The Componen Number for chip select
   @param[in] ByteCount            Number of bytes in JedecId data portion of the SPI cycle, the data size is 3 typically
   @param[out] JedecId             The Pointer to caller-allocated buffer containing JEDEC ID received
@@ -262,7 +262,7 @@ SpiProtocolFlashReadSfdp (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadJedecId (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT8              ComponentNumber,
   IN     UINT32             ByteCount,
   OUT    UINT8              *JedecId
@@ -271,7 +271,7 @@ SpiProtocolFlashReadJedecId (
 /**
   Write the status register in the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
   @param[in] StatusValue          The Pointer to caller-allocated buffer containing the value of Status register writing
 
@@ -282,7 +282,7 @@ SpiProtocolFlashReadJedecId (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashWriteStatus (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             ByteCount,
   IN     UINT8              *StatusValue
   );
@@ -290,7 +290,7 @@ SpiProtocolFlashWriteStatus (
 /**
   Read status register in the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
   @param[out] StatusValue         The Pointer to caller-allocated buffer containing the value of Status register received.
 
@@ -301,7 +301,7 @@ SpiProtocolFlashWriteStatus (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadStatus (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             ByteCount,
   OUT    UINT8              *StatusValue
   );
@@ -309,8 +309,8 @@ SpiProtocolFlashReadStatus (
 /**
   Get the SPI region base and size, based on the enum type
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for for the base address which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[out] BaseAddress         The Flash Linear Address for the Region 'n' Base
   @param[out] RegionSize          The size for the Region 'n'
 
@@ -321,8 +321,8 @@ SpiProtocolFlashReadStatus (
 EFI_STATUS
 EFIAPI
 SpiProtocolGetRegionAddress (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   OUT    UINT32             *BaseAddress,
   OUT    UINT32             *RegionSize
   );
@@ -330,7 +330,7 @@ SpiProtocolGetRegionAddress (
 /**
   Read PCH Soft Strap Values
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] SoftStrapAddr        PCH Soft Strap address offset from FPSBA.
   @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle
   @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing PCH Soft Strap Value.
@@ -344,7 +344,7 @@ SpiProtocolGetRegionAddress (
 EFI_STATUS
 EFIAPI
 SpiProtocolReadPchSoftStrap (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             SoftStrapAddr,
   IN     UINT32             ByteCount,
   OUT    VOID               *SoftStrapValue
@@ -353,7 +353,7 @@ SpiProtocolReadPchSoftStrap (
 /**
   Read CPU Soft Strap Values
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] SoftStrapAddr        CPU Soft Strap address offset from FCPUSBA.
   @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle.
   @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing CPU Soft Strap Value.
@@ -367,7 +367,7 @@ SpiProtocolReadPchSoftStrap (
 EFI_STATUS
 EFIAPI
 SpiProtocolReadCpuSoftStrap (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             SoftStrapAddr,
   IN     UINT32             ByteCount,
   OUT    VOID               *SoftStrapValue
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h
index 5cb47911..57e269e1 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/IncludePrivate/Register/SpiRegs.h
@@ -62,6 +62,7 @@
 //
 // BIOS Flash Program Registers (based on SPI_BAR0)
 //
+#define R_SPI_MEM_BFPR                      0x00                          ///< BIOS Flash Primary Region Register(32bits), which is RO and contains the same value from FREG1
 #define R_SPI_MEM_HSFSC                     0x04                          ///< Hardware Sequencing Flash Status and Control Register(32bits)
 #define B_SPI_MEM_HSFSC_FDBC_MASK           0x3F000000                    ///< Flash Data Byte Count ( <= 64), Count = (Value in this field) + 1.
 #define N_SPI_MEM_HSFSC_FDBC                24
@@ -78,12 +79,8 @@
 #define B_SPI_MEM_HSFSC_CYCLE_FGO           BIT16                         ///< Flash Cycle Go.
 #define B_SPI_MEM_HSFSC_FDV                 BIT14                         ///< Flash Descriptor Valid, once valid software can use hareware sequencing regs
 #define B_SPI_MEM_HSFSC_WRSDIS              BIT11                         ///< Write Status Disable
-#define B_SPI_MEM_HSFSC_SAF_CE              BIT8                          ///< SAF ctype error
-#define B_SPI_MEM_HSFSC_SAF_LE              BIT6                          ///< SAF link error
+#define B_SPI_MEM_HSFSC_SAF_MODE_ACTIVE     BIT7                          ///< Indicates flash is attached either directly to the PCH via the SPI bus or EC/BMC
 #define B_SPI_MEM_HSFSC_SCIP                BIT5                          ///< SPI cycle in progress
-#define B_SPI_MEM_HSFSC_SAF_DLE             BIT4                          ///< SAF Data length error
-#define B_SPI_MEM_HSFSC_SAF_ERROR           BIT3                          ///< SAF Error
-#define B_SPI_MEM_HSFSC_AEL                 BIT2                          ///< Access Error Log
 #define B_SPI_MEM_HSFSC_FCERR               BIT1                          ///< Flash Cycle Error
 #define B_SPI_MEM_HSFSC_FDONE               BIT0                          ///< Flash Cycle Done
 #define R_SPI_MEM_FADDR                     0x08                          ///< SPI Flash Address
@@ -113,4 +110,5 @@
 #define B_SPI_MEM_SFDPX_VSCCX_EO_64K        BIT29                         ///< 64k Erase valid (EO_64k_valid)
 #define R_SPI_MEM_SFDP1_VSCC1               0xC8                          ///< Vendor Specific Component Capabilities Register(32 bits)
 
+
 #endif
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
new file mode 100644
index 00000000..444c6b34
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/PeiDxeSmmSpiAccessLib.inf
@@ -0,0 +1,33 @@
+## @file
+# Component description file for PCH SPI access library
+#
+#  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+
+[Defines]
+INF_VERSION     = 0x00010017
+BASE_NAME       = PeiDxeSmmSpiAccessLib
+FILE_GUID       = A6D4C05A-F6CB-46D5-4BA1-8C47B139DCA6
+VERSION_STRING  = 1.0
+MODULE_TYPE     = BASE
+LIBRARY_CLASS   = SpiAccessLib
+
+
+[LibraryClasses]
+BaseLib
+IoLib
+DebugLib
+PciSegmentLib
+PchPciBdfLib
+PchPcrLib
+
+[Packages]
+MdePkg/MdePkg.dec
+AlderlakeSiliconPkg/SiPkg.dec
+
+
+[Sources]
+SpiAccessLib.c
\ No newline at end of file
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c
new file mode 100644
index 00000000..da8475ea
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiDxeSmmSpiAccessLib/SpiAccessLib.c
@@ -0,0 +1,75 @@
+/** @file
+  SPI library for abstraction of SPI HW registers accesses
+
+  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Base.h>
+#include <Uefi/UefiBaseType.h>
+#include <IndustryStandard/Pci22.h>
+#include <Library/BaseLib.h>
+#include <Library/IoLib.h>
+#include <Library/DebugLib.h>
+#include <Library/PciSegmentLib.h>
+#include <Library/SpiAccessLib.h>
+#include <Library/PchPciBdfLib.h>
+#include <Register/SpiRegs.h>
+#include <Register/FlashRegs.h>
+#include <Register/PchRegs.h>
+#include <Register/PchDmiRegs.h>
+
+
+/**
+  Checks if PCH SPI Controler is present and available
+
+  @retval TRUE    PCH SPI controller is avaialable
+  @retval FALSE   PCH SPI controller is not available
+**/
+BOOLEAN
+SpiIsControllerAvailable (
+  VOID
+  )
+{
+  //
+  // Checks for SPI controller
+  //
+  return (PciSegmentRead16 (SpiPciCfgBase () + PCI_VENDOR_ID_OFFSET) != 0xFFFF);
+}
+
+/**
+  Returns PCH SPI BAR0 value
+
+  @retval  UINT32  PCH SPI BAR0 value
+**/
+UINT32
+SpiGetBar0 (
+  VOID
+  )
+{
+  UINT32  SpiBar0;
+
+  ASSERT (SpiIsControllerAvailable ());
+  SpiBar0 = PciSegmentRead32 (SpiPciCfgBase () + R_SPI_CFG_BAR0) & ~B_SPI_CFG_BAR0_MASK;
+  ASSERT (SpiBar0 != 0);
+
+  return SpiBar0;
+}
+
+/**
+  Checks if device Attached Flash (DAF) mode is active
+
+  @retval TRUE    SAF mode is active
+  @retval FALSE   SAF mode is not active
+**/
+BOOLEAN
+SpiIsSafModeActive (
+  VOID
+  )
+{
+  UINT32 SpiBar0;
+  SpiBar0 = SpiGetBar0 ();
+
+  return !!(MmioRead32 (SpiBar0 + R_SPI_MEM_HSFSC) & B_SPI_MEM_HSFSC_SAF_MODE_ACTIVE);
+}
\ No newline at end of file
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c
index aaf4e179..68031b4a 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PchSpi.c
@@ -9,7 +9,7 @@
 #include <Library/MemoryAllocationLib.h>
 #include <Library/PeiServicesLib.h>
 #include <Library/PciSegmentLib.h>
-#include <Ppi/Spi.h>
+#include <Ppi/Spi2.h>
 #include <Library/SpiCommonLib.h>
 #include <PchReservedResources.h>
 #include <IndustryStandard/Pci30.h>
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
index c3bf6d02..e720eed2 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Library/PeiSpiLib/PeiSpiLib.inf
@@ -30,7 +30,7 @@ PchPciBdfLib
 [Packages]
 MdePkg/MdePkg.dec
 AlderlakeSiliconPkg/SiPkg.dec
-
+IntelSiliconPkg/IntelSiliconPkg.dec
 
 [Sources]
 PchSpi.c
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
index 25ab9194..b38e149d 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/BaseSpiCommonLib.inf
@@ -19,11 +19,28 @@
 [Packages]
   MdePkg/MdePkg.dec
   AlderlakeSiliconPkg/SiPkg.dec
+  IntelSiliconPkg/IntelSiliconPkg.dec
 
 [LibraryClasses]
   IoLib
   DebugLib
   PmcLib
   PchPciBdfLib
+  SpiAccessLib
 
-[Pcd]
+[Guids]
+  gFlashRegionDescriptorGuid
+  gFlashRegionBiosGuid
+  gFlashRegionMeGuid
+  gFlashRegionGbeGuid
+  gFlashRegionPlatformDataGuid
+  gFlashRegionDerGuid
+  gFlashRegionSecondaryBiosGuid
+  gFlashRegionMicrocodePatchGuid
+  gFlashRegionEcGuid
+  gFlashRegionDeviceExpansionGuid
+  gFlashRegionIeGuid
+  gFlashRegion10GbeAGuid
+  gFlashRegion10GbeBGuid
+  gFlashRegionAllGuid
+  gFlashRegionMaxGuid
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c
index ab51521f..8d1c4785 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/LibraryPrivate/BaseSpiCommonLib/SpiCommon.c
@@ -12,17 +12,137 @@
 #include <IndustryStandard/Pci30.h>
 #include <Library/PmcLib.h>
 #include <Library/PciSegmentLib.h>
-#include <Protocol/Spi.h>
+#include <Protocol/Spi2.h>
 #include <Library/SpiCommonLib.h>
 #include <Register/PchRegs.h>
 #include <Register/SpiRegs.h>
 #include <Register/FlashRegs.h>
 #include <Register/PmcRegs.h>
 #include <Library/PchPciBdfLib.h>
+#include <Library/SpiAccessLib.h>
 
 #define DEFAULT_CPU_STRAP_BASE_OFFSET 0x300 // Default CPU Straps base offset
 #define B_SPI_MEM_HSFSC_SAVE_MASK     (B_SPI_MEM_HSFSC_FDBC_MASK | B_SPI_MEM_HSFSC_CYCLE_MASK)
 
+typedef enum {
+  FlashRegionDescriptor,
+  FlashRegionBios,
+  FlashRegionMe,
+  FlashRegionGbe,
+  FlashRegionPlatformData,
+  FlashRegionDer,
+  FlashRegionSecondaryBios,
+  FlashRegionMicrocodePatch,
+  FlashRegionEc,
+  FlashRegionDeviceExpansion,
+  FlashRegionIe,
+  FlashRegion10GbeA,
+  FlashRegion10GbeB,
+  FlashRegionAll = 16,
+  FlashRegionMax
+} FLASH_REGION_TYPE;
+
+typedef struct {
+  EFI_GUID            *Guid;
+  FLASH_REGION_TYPE   Type;
+} FLASH_REGION_MAPPING;
+
+FLASH_REGION_MAPPING mFlashRegionTypes[] = {
+  {
+    &gFlashRegionDescriptorGuid,
+    FlashRegionDescriptor
+  },
+  {
+    &gFlashRegionBiosGuid,
+    FlashRegionBios
+  },
+  {
+    &gFlashRegionMeGuid,
+    FlashRegionMe
+  },
+  {
+    &gFlashRegionGbeGuid,
+    FlashRegionGbe
+  },
+  {
+    &gFlashRegionPlatformDataGuid,
+    FlashRegionPlatformData
+  },
+  {
+    &gFlashRegionDerGuid,
+    FlashRegionDer
+  },
+  {
+    &gFlashRegionSecondaryBiosGuid,
+    FlashRegionSecondaryBios
+  },
+  {
+    &gFlashRegionMicrocodePatchGuid,
+    FlashRegionMicrocodePatch
+  },
+  {
+    &gFlashRegionEcGuid,
+    FlashRegionEc
+  },
+  {
+    &gFlashRegionDeviceExpansionGuid,
+    FlashRegionDeviceExpansion
+  },
+  {
+    &gFlashRegionIeGuid,
+    FlashRegionIe
+  },
+  {
+    &gFlashRegion10GbeAGuid,
+    FlashRegion10GbeA
+  },
+  {
+    &gFlashRegion10GbeBGuid,
+    FlashRegion10GbeB
+  },
+  {
+    &gFlashRegionAllGuid,
+    FlashRegionAll
+  },
+  {
+    &gFlashRegionMaxGuid,
+    FlashRegionMax
+  }
+};
+
+/**
+  Returns the type of a flash region given its GUID.
+
+  @param[in]    FlashRegionGuid   Pointer to the flash region GUID.
+  @param[out]   FlashRegionType   Pointer to a buffer that will be set to the flash region type value.
+
+  @retval       EFI_SUCCESS             The flash region type was found for the given flash region GUID.
+  @retval       EFI_INVALID_PARAMETER   A pointer argument passed to the function is NULL.
+  @retval       EFI_NOT_FOUND           The flash region type was not found for the given flash region GUID.
+
+**/
+EFI_STATUS
+GetFlashRegionType (
+  IN     EFI_GUID           *FlashRegionGuid,
+  OUT    FLASH_REGION_TYPE  *FlashRegionType
+  )
+{
+  UINTN   Index;
+
+  if (FlashRegionGuid == NULL || FlashRegionType == NULL) {
+    return EFI_INVALID_PARAMETER;
+  }
+
+  for (Index = 0; Index < ARRAY_SIZE (mFlashRegionTypes); Index++) {
+    if (CompareGuid (mFlashRegionTypes[Index].Guid, FlashRegionGuid)) {
+      *FlashRegionType = mFlashRegionTypes[Index].Type;
+      return EFI_SUCCESS;
+    }
+  }
+
+  return EFI_NOT_FOUND;
+}
+
 /**
   Initialize an SPI protocol instance.
 
@@ -184,7 +304,7 @@ SpiProtocolConstructor (
   // If CPU Strap base address is different than 0x300 need to add MDTBA value for final location
   //
   if (SpiInstance->CpuStrapBaseAddr != DEFAULT_CPU_STRAP_BASE_OFFSET) {
-    Status = SpiProtocolFlashRead (&(SpiInstance->SpiProtocol), FlashRegionAll, R_FLASH_UMAP1, sizeof (Data32), (UINT8 *) (&Data32));
+    Status = SpiProtocolFlashRead (&(SpiInstance->SpiProtocol), &gFlashRegionAllGuid, R_FLASH_UMAP1, sizeof (Data32), (UINT8 *) (&Data32));
     ASSERT_EFI_ERROR (Status);
     Mdtba = (UINT16)(((Data32 & B_FLASH_UMAP1_MDTBA) >> N_FLASH_UMAP1_MDTBA) << N_FLASH_UMAP1_MDTBA_REPR);
     DEBUG ((DEBUG_INFO, "Mdtba : %0x\n", Mdtba));
@@ -279,7 +399,7 @@ PchPmTimerStallRuntimeSafe (
 STATIC
 BOOLEAN
 WaitForSpiCycleComplete (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINTN              PchSpiBar0,
   IN     BOOLEAN            ErrorCheck
   )
@@ -317,7 +437,7 @@ WaitForSpiCycleComplete (
   This function waits for a pending SPI transaction to complete without clearing
   status fields
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] PchSpiBar0           SPI MMIO address
 
   @retval TRUE                    SPI cycle completed on the interface.
@@ -327,7 +447,7 @@ WaitForSpiCycleComplete (
 BOOLEAN
 STATIC
 WaitForScipNoClear (
-  IN      PCH_SPI_PROTOCOL    *This,
+  IN      PCH_SPI2_PROTOCOL   *This,
   IN      UINTN               PchSpiBar0
   )
 {
@@ -352,87 +472,11 @@ WaitForScipNoClear (
   return FALSE;
 }
 
-/**
-  This function sets the FDONE and optionally FCERR bits in the HSFS_CTL register
-
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] PchSpiBar0           SPI MMIO address
-  @param[in] SetErrorBit          Set to TRUE to set the FCERR bit
-
-**/
-VOID
-STATIC
-SetHsfscFdone (
-  IN      PCH_SPI_PROTOCOL    *This,
-  IN      UINTN               PchSpiBar0,
-  IN      BOOLEAN             SetFcErrorBit
-  )
-{
-  EFI_STATUS    Status;
-  UINT32        HardwareSpiAddr;
-  UINT32        FlashRegionSize;
-  UINT32        Index;
-  UINT8         DataCount;
-
-  Status = SpiProtocolGetRegionAddress (This, FlashRegionBios, &HardwareSpiAddr, &FlashRegionSize);
-  if (EFI_ERROR (Status)) {
-    return;
-  }
-
-  //
-  // Clear FDONE and FCERR
-  //
-  MmioWrite8 (PchSpiBar0 + R_SPI_MEM_HSFSC, B_SPI_MEM_HSFSC_FCERR | B_SPI_MEM_HSFSC_FDONE);
-
-  //
-  // Fill data buffer
-  //
-  if (SetFcErrorBit) {
-    for (Index = 0; Index < 64; Index += sizeof (UINT32)) {
-      MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FDATA00 + Index, 0xFFFFFFFF);
-    }
-  }
-
-  //
-  // Set the Flash Address
-  //
-  MmioWrite32 (
-    (PchSpiBar0 + R_SPI_MEM_FADDR),
-    (UINT32) (HardwareSpiAddr & B_SPI_MEM_FADDR_MASK)
-    );
-  //
-  // Set Data count, Flash cycle, and Set Go bit to start a cycle
-  //
-  if (SetFcErrorBit) {
-    DataCount = 0x3F;
-  } else {
-    DataCount = 0;
-  }
-  MmioAndThenOr32 (
-    PchSpiBar0 + R_SPI_MEM_HSFSC,
-    (UINT32) (~(B_SPI_MEM_HSFSC_FDBC_MASK | B_SPI_MEM_HSFSC_CYCLE_MASK)),
-    (UINT32) (((DataCount << N_SPI_MEM_HSFSC_FDBC) & B_SPI_MEM_HSFSC_FDBC_MASK) |
-              (V_SPI_MEM_HSFSC_CYCLE_READ << N_SPI_MEM_HSFSC_CYCLE)             |
-              B_SPI_MEM_HSFSC_CYCLE_FGO)
-    );
-
-  if (SetFcErrorBit) {
-    //
-    // Intentionally write to FDATA while a cycle is in progress to generate an error
-    //
-    for (Index = 0; Index < 64; Index += sizeof (UINT32)) {
-      MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FDATA00 + Index, 0x0);
-    }
-  }
-
-  WaitForScipNoClear (This, PchSpiBar0);
-}
-
 /**
   This function sends the programmed SPI command to the device.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] SpiRegionType        The SPI Region type for flash cycle which is listed in the Descriptor
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] FlashCycleType       The Flash SPI cycle type list in HSFC (Hardware Sequencing Flash Control Register) register
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
@@ -446,8 +490,8 @@ SetHsfscFdone (
 STATIC
 EFI_STATUS
 SendSpiCmd (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     FLASH_CYCLE_TYPE   FlashCycleType,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
@@ -564,7 +608,7 @@ SendSpiCmd (
     }
   }
 
-  Status = SpiProtocolGetRegionAddress (This, FlashRegionType, &HardwareSpiAddr, &FlashRegionSize);
+  Status = SpiProtocolGetRegionAddress (This, FlashRegionGuid, &HardwareSpiAddr, &FlashRegionSize);
   if (EFI_ERROR (Status)) {
     goto SendSpiCmdEnd;
   }
@@ -751,31 +795,6 @@ SendSpiCmd (
   } while (ByteCount > 0);
 
 SendSpiCmdEnd:
-  //
-  // Restore SPI controller state
-  //
-  if (RestoreState) {
-    if (HsfscFdoneSave) {
-      SetHsfscFdone (This, PchSpiBar0, HsfscFcerrSave);
-    }
-    MmioAndThenOr32 (
-      PchSpiBar0 + R_SPI_MEM_HSFSC,
-      (UINT32)  ~(B_SPI_MEM_HSFSC_SAVE_MASK |
-                  B_SPI_MEM_HSFSC_SAF_CE    |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_SAF_LE    |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_SAF_DLE   |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_SAF_ERROR |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_AEL       |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_FCERR     |   // This bit clears when set to 1, ensure 0 is written
-                  B_SPI_MEM_HSFSC_FDONE),       // This bit clears when set to 1, ensure 0 is written
-      HsfscSave
-      );
-    MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FADDR, FaddrSave);
-    for (Index = 0; Index < 64; Index += sizeof (UINT32)) {
-      MmioWrite32 (PchSpiBar0 + R_SPI_MEM_FDATA00 + Index, FdataSave[Index >> 2]);
-    }
-  }
-
   //
   // Restore the settings for SPI Prefetching and Caching and enable BIOS Write Protect
   //
@@ -801,8 +820,8 @@ SendSpiCmdEnd:
 /**
   Read data from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
   @param[out] Buffer              The Pointer to caller-allocated buffer containing the dada received.
@@ -815,8 +834,8 @@ SendSpiCmdEnd:
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashRead (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
   OUT    UINT8              *Buffer
@@ -829,7 +848,7 @@ SpiProtocolFlashRead (
   //
   Status = SendSpiCmd (
              This,
-             FlashRegionType,
+             FlashRegionGuid,
              FlashCycleRead,
              Address,
              ByteCount,
@@ -841,8 +860,8 @@ SpiProtocolFlashRead (
 /**
   Write data to the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
   @param[in] Buffer               Pointer to caller-allocated buffer containing the data sent during the SPI cycle.
@@ -854,8 +873,8 @@ SpiProtocolFlashRead (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashWrite (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
   IN     UINT8              *Buffer
@@ -868,7 +887,7 @@ SpiProtocolFlashWrite (
   //
   Status = SendSpiCmd (
              This,
-             FlashRegionType,
+             FlashRegionGuid,
              FlashCycleWrite,
              Address,
              ByteCount,
@@ -880,8 +899,8 @@ SpiProtocolFlashWrite (
 /**
   Erase some area on the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for flash cycle which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[in] Address              The Flash Linear Address must fall within a region for which BIOS has access permissions.
   @param[in] ByteCount            Number of bytes in the data portion of the SPI cycle.
 
@@ -892,8 +911,8 @@ SpiProtocolFlashWrite (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashErase (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   IN     UINT32             Address,
   IN     UINT32             ByteCount
   )
@@ -905,7 +924,7 @@ SpiProtocolFlashErase (
   //
   Status = SendSpiCmd (
              This,
-             FlashRegionType,
+             FlashRegionGuid,
              FlashCycleErase,
              Address,
              ByteCount,
@@ -917,7 +936,7 @@ SpiProtocolFlashErase (
 /**
   Read SFDP data from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ComponentNumber      The Componen Number for chip select
   @param[in] Address              The starting byte address for SFDP data read.
   @param[in] ByteCount            Number of bytes in SFDP data portion of the SPI cycle
@@ -932,20 +951,53 @@ SpiProtocolFlashErase (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadSfdp (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT8              ComponentNumber,
   IN     UINT32             Address,
   IN     UINT32             ByteCount,
   OUT    UINT8              *SfdpData
   )
 {
-  return EFI_SUCCESS;
+  SPI_INSTANCE      *SpiInstance;
+  EFI_STATUS        Status;
+  UINT32            FlashAddress;
+
+  if (SpiIsSafModeActive ()) {
+    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
+    return EFI_UNSUPPORTED;
+  }
+
+  SpiInstance       = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
+  Status            = EFI_SUCCESS;
+
+  if (ComponentNumber > SpiInstance->NumberOfComponents) {
+    ASSERT (FALSE);
+    return EFI_INVALID_PARAMETER;
+  }
+
+  FlashAddress = 0;
+  if (ComponentNumber == FlashComponent1) {
+    FlashAddress = SpiInstance->Component1StartAddr;
+  }
+  FlashAddress += Address;
+  //
+  // Sends the command to the SPI interface to execute.
+  //
+  Status = SendSpiCmd (
+             This,
+             &gFlashRegionAllGuid,
+             FlashCycleReadSfdp,
+             FlashAddress,
+             ByteCount,
+             SfdpData
+             );
+  return Status;
 }
 
 /**
   Read Jedec Id from the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ComponentNumber      The Componen Number for chip select
   @param[in] ByteCount            Number of bytes in JedecId data portion of the SPI cycle, the data size is 3 typically
   @param[out] JedecId             The Pointer to caller-allocated buffer containing JEDEC ID received
@@ -959,19 +1011,52 @@ SpiProtocolFlashReadSfdp (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadJedecId (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT8              ComponentNumber,
   IN     UINT32             ByteCount,
   OUT    UINT8              *JedecId
   )
 {
-  return EFI_SUCCESS;
+  SPI_INSTANCE      *SpiInstance;
+  EFI_STATUS        Status;
+  UINT32            Address;
+
+  if (SpiIsSafModeActive ()) {
+    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
+    return EFI_UNSUPPORTED;
+  }
+
+  SpiInstance       = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
+  Status            = EFI_SUCCESS;
+
+  if (ComponentNumber > SpiInstance->NumberOfComponents) {
+    ASSERT (FALSE);
+    return EFI_INVALID_PARAMETER;
+  }
+
+  Address = 0;
+  if (ComponentNumber == FlashComponent1) {
+    Address = SpiInstance->Component1StartAddr;
+  }
+
+  //
+  // Sends the command to the SPI interface to execute.
+  //
+  Status = SendSpiCmd (
+             This,
+             &gFlashRegionAllGuid,
+             FlashCycleReadJedecId,
+             Address,
+             ByteCount,
+             JedecId
+             );
+  return Status;
 }
 
 /**
   Write the status register in the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
   @param[in] StatusValue          The Pointer to caller-allocated buffer containing the value of Status register writing
 
@@ -983,18 +1068,36 @@ SpiProtocolFlashReadJedecId (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashWriteStatus (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             ByteCount,
   IN     UINT8              *StatusValue
   )
 {
-  return EFI_SUCCESS;
+  EFI_STATUS        Status;
+
+  if (SpiIsSafModeActive ()) {
+    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
+    return EFI_UNSUPPORTED;
+  }
+
+  //
+  // Sends the command to the SPI interface to execute.
+  //
+  Status = SendSpiCmd (
+             This,
+             &gFlashRegionAllGuid,
+             FlashCycleWriteStatus,
+             0,
+             ByteCount,
+             StatusValue
+             );
+  return Status;
 }
 
 /**
   Read status register in the flash part.
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] ByteCount            Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
   @param[out] StatusValue         The Pointer to caller-allocated buffer containing the value of Status register received.
 
@@ -1006,19 +1109,37 @@ SpiProtocolFlashWriteStatus (
 EFI_STATUS
 EFIAPI
 SpiProtocolFlashReadStatus (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             ByteCount,
   OUT    UINT8              *StatusValue
   )
 {
-  return EFI_SUCCESS;
+  EFI_STATUS        Status;
+
+  if (SpiIsSafModeActive ()) {
+    DEBUG ((DEBUG_ERROR, "Unallowed call to %a while SAF Mode is active.\n", __FUNCTION__));
+    return EFI_UNSUPPORTED;
+  }
+
+  //
+  // Sends the command to the SPI interface to execute.
+  //
+  Status = SendSpiCmd (
+             This,
+             &gFlashRegionAllGuid,
+             FlashCycleReadStatus,
+             0,
+             ByteCount,
+             StatusValue
+             );
+  return Status;
 }
 
 /**
   Get the SPI region base and size, based on the enum type
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
-  @param[in] FlashRegionType      The Flash Region type for for the base address which is listed in the Descriptor.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
+  @param[in] FlashRegionGuid      The Flash Region GUID for flash cycle which corresponds to the type in the descriptor.
   @param[out] BaseAddress         The Flash Linear Address for the Region 'n' Base
   @param[out] RegionSize          The size for the Region 'n'
 
@@ -1029,18 +1150,24 @@ SpiProtocolFlashReadStatus (
 EFI_STATUS
 EFIAPI
 SpiProtocolGetRegionAddress (
-  IN     PCH_SPI_PROTOCOL   *This,
-  IN     FLASH_REGION_TYPE  FlashRegionType,
+  IN     PCH_SPI2_PROTOCOL  *This,
+  IN     EFI_GUID           *FlashRegionGuid,
   OUT    UINT32             *BaseAddress,
   OUT    UINT32             *RegionSize
   )
 {
+  EFI_STATUS          Status;
+  FLASH_REGION_TYPE   FlashRegionType;
   SPI_INSTANCE    *SpiInstance;
   UINTN           PchSpiBar0;
   UINT32          ReadValue;
 
   SpiInstance     = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
 
+  Status = GetFlashRegionType (FlashRegionGuid, &FlashRegionType);
+  if (EFI_ERROR (Status)) {
+    return EFI_INVALID_PARAMETER;
+  }
   if (FlashRegionType >= FlashRegionMax) {
     return EFI_INVALID_PARAMETER;
   }
@@ -1053,10 +1180,8 @@ SpiProtocolGetRegionAddress (
 
   PchSpiBar0      = AcquireSpiBar0 (SpiInstance);
 
-  ReadValue = MmioRead32 (PchSpiBar0 + (R_SPI_MEM_FREG0_FLASHD + (S_SPI_MEM_FREGX * ((UINT32) FlashRegionType))));
-
   ReleaseSpiBar0 (SpiInstance);
-
+  ReadValue = MmioRead32 (PchSpiBar0 + (R_SPI_MEM_FREG0_FLASHD + (S_SPI_MEM_FREGX * ((UINT32) FlashRegionType))));
   //
   // If the region is not used, the Region Base is 7FFFh and Region Limit is 0000h
   //
@@ -1077,7 +1202,7 @@ SpiProtocolGetRegionAddress (
 /**
   Read PCH Soft Strap Values
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] SoftStrapAddr        PCH Soft Strap address offset from FPSBA.
   @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle
   @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing PCH Soft Strap Value.
@@ -1091,19 +1216,51 @@ SpiProtocolGetRegionAddress (
 EFI_STATUS
 EFIAPI
 SpiProtocolReadPchSoftStrap (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             SoftStrapAddr,
   IN     UINT32             ByteCount,
   OUT    VOID               *SoftStrapValue
   )
 {
-  return EFI_SUCCESS;
+  SPI_INSTANCE      *SpiInstance;
+  UINT32            StrapFlashAddr;
+  EFI_STATUS        Status;
+
+  SpiInstance     = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
+
+  if (ByteCount == 0) {
+    *(UINT16 *) SoftStrapValue = SpiInstance->PchStrapSize;
+    return EFI_SUCCESS;
+  }
+
+  if ((SoftStrapAddr + ByteCount) > (UINT32) SpiInstance->PchStrapSize) {
+    ASSERT (FALSE);
+    return EFI_INVALID_PARAMETER;
+  }
+
+  //
+  // PCH Strap Flash Address = FPSBA + RamAddr
+  //
+  StrapFlashAddr = SpiInstance->PchStrapBaseAddr + SoftStrapAddr;
+
+  //
+  // Read PCH Soft straps from using execute command
+  //
+  Status = SendSpiCmd (
+             This,
+              &gFlashRegionDescriptorGuid,
+             FlashCycleRead,
+             StrapFlashAddr,
+             ByteCount,
+             SoftStrapValue
+             );
+  return Status;
 }
 
 /**
   Read CPU Soft Strap Values
 
-  @param[in] This                 Pointer to the PCH_SPI_PROTOCOL instance.
+  @param[in] This                 Pointer to the PCH_SPI2_PROTOCOL instance.
   @param[in] SoftStrapAddr        CPU Soft Strap address offset from FCPUSBA.
   @param[in] ByteCount            Number of bytes in SoftStrap data portion of the SPI cycle.
   @param[out] SoftStrapValue      The Pointer to caller-allocated buffer containing CPU Soft Strap Value.
@@ -1117,11 +1274,43 @@ SpiProtocolReadPchSoftStrap (
 EFI_STATUS
 EFIAPI
 SpiProtocolReadCpuSoftStrap (
-  IN     PCH_SPI_PROTOCOL   *This,
+  IN     PCH_SPI2_PROTOCOL  *This,
   IN     UINT32             SoftStrapAddr,
   IN     UINT32             ByteCount,
   OUT    VOID               *SoftStrapValue
   )
 {
-  return EFI_SUCCESS;
+  SPI_INSTANCE      *SpiInstance;
+  UINT32            StrapFlashAddr;
+  EFI_STATUS        Status;
+
+  SpiInstance     = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
+
+  if (ByteCount == 0) {
+    *(UINT16 *) SoftStrapValue = SpiInstance->CpuStrapSize;
+    return EFI_SUCCESS;
+  }
+
+  if ((SoftStrapAddr + ByteCount) > (UINT32) SpiInstance->CpuStrapSize) {
+    ASSERT (FALSE);
+    return EFI_INVALID_PARAMETER;
+  }
+
+  //
+  // CPU Strap Flash Address = FCPUSBA + RamAddr
+  //
+  StrapFlashAddr = SpiInstance->CpuStrapBaseAddr + SoftStrapAddr;
+
+  //
+  // Read Cpu Soft straps from using execute command
+  //
+  Status = SendSpiCmd (
+             This,
+             &gFlashRegionDescriptorGuid,
+             FlashCycleRead,
+             StrapFlashAddr,
+             ByteCount,
+             SoftStrapValue
+             );
+  return Status;
 }
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c
index 2dd80eba..68190b2b 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/Spi.c
@@ -13,10 +13,11 @@
 #include <Library/BaseMemoryLib.h>
 #include <Library/SmmServicesTableLib.h>
 #include <Library/PciSegmentLib.h>
-#include <Protocol/Spi.h>
+#include <Protocol/Spi2.h>
 #include <Protocol/SmmCpu.h>
 #include <Library/SpiCommonLib.h>
 #include <PchReservedResources.h>
+#include <Library/SmmPchPrivateLib.h>
 #include <Library/PchPciBdfLib.h>
 #include <IndustryStandard/Pci30.h>
 #include <Register/PchRegs.h>
@@ -82,8 +83,8 @@ SpiExitBootServicesCallback (
       - Documented in System Management Mode Core Interface Specification .
 
   - @result
-    The SPI SMM driver produces @link _PCH_SPI_PROTOCOL PCH_SPI_PROTOCOL @endlink with GUID
-    gPchSmmSpiProtocolGuid which is different from SPI RUNTIME driver.
+    The SPI SMM driver produces @link _PCH_SPI2_PROTOCOL PCH_SPI2_PROTOCOL @endlink with GUID
+    gPchSmmSpi2ProtocolGuid which is different from SPI RUNTIME driver.
 
   - <b>Integration Check List</b>\n
     - This driver supports Descriptor Mode only.
@@ -163,11 +164,11 @@ InstallPchSpi (
   }
 
   //
-  // Install the SMM PCH_SPI_PROTOCOL interface
+  // Install the SMM PCH_SPI2_PROTOCOL interface
   //
   Status = gSmst->SmmInstallProtocolInterface (
                     &(mSpiInstance->Handle),
-                    &gPchSmmSpiProtocolGuid,
+                    &gPchSmmSpi2ProtocolGuid,
                     EFI_NATIVE_INTERFACE,
                     &(mSpiInstance->SpiProtocol)
                     );
@@ -303,6 +304,19 @@ DisableBiosWriteProtect (
     B_SPI_CFG_BC_WPD
     );
 
+  ///
+  /// the BIOS Region can only be updated by following the steps bellow:
+  ///  - Once all threads enter SMM
+  ///  - Read memory location FED30880h OR with 00000001h, place the result in EAX,
+  ///    and write data to lower 32 bits of MSR 1FEh (sample code available)
+  ///  - Set BIOSWE bit (SPI PCI Offset DCh [0]) = 1b
+  ///  - Modify BIOS Region
+  ///  - Clear BIOSWE bit (SPI PCI Offset DCh [0]) = 0b
+  ///
+  if ((PciSegmentRead8 (SpiBaseAddress + R_SPI_CFG_BC) & B_SPI_CFG_BC_EISS) != 0) {
+    PchSetInSmmSts ();
+  }
+
   return EFI_SUCCESS;
 }
 
@@ -327,6 +341,12 @@ EnableBiosWriteProtect (
     (UINT8) (~B_SPI_CFG_BC_WPD)
     );
 
+  ///
+  /// Check if EISS bit is set
+  ///
+  if (((PciSegmentRead8 (SpiBaseAddress + R_SPI_CFG_BC)) & B_SPI_CFG_BC_EISS) == B_SPI_CFG_BC_EISS) {
+    PchClearInSmmSts ();
+  }
 }
 
 /**
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf
index 78913423..445f4af8 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf
+++ b/Silicon/Intel/AlderlakeSiliconPkg/IpBlock/Spi/Smm/SpiSmm.inf
@@ -24,19 +24,20 @@ UefiBootServicesTableLib
 BaseLib
 SmmServicesTableLib
 SpiCommonLib
+SmmPchPrivateLib
 PchPciBdfLib
 
 [Packages]
 MdePkg/MdePkg.dec
 AlderlakeSiliconPkg/SiPkg.dec
-
+IntelSiliconPkg/IntelSiliconPkg.dec
 
 [Sources]
 Spi.c
 
 
 [Protocols]
-gPchSmmSpiProtocolGuid                ## PRODUCES
+gPchSmmSpi2ProtocolGuid                ## PRODUCES
 gEfiSmmCpuProtocolGuid                ## CONSUMES
 gEdkiiSmmExitBootServicesProtocolGuid ## CONSUMES
 
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h b/Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h
new file mode 100644
index 00000000..63857863
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Pch/IncludePrivate/Library/SmmPchPrivateLib.h
@@ -0,0 +1,27 @@
+/** @file
+  Header file for private PCH SMM Lib.
+
+  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#ifndef _SMM_PCH_PRIVATE_LIB_H_
+#define _SMM_PCH_PRIVATE_LIB_H_
+
+/**
+  Set InSmm.Sts bit
+**/
+VOID
+PchSetInSmmSts (
+  VOID
+  );
+
+/**
+  Clear InSmm.Sts bit
+**/
+VOID
+PchClearInSmmSts (
+  VOID
+  );
+
+#endif // _SMM_PCH_PRIVATE_LIB_H_
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c
new file mode 100644
index 00000000..0436a423
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.c
@@ -0,0 +1,61 @@
+/** @file
+  PCH SMM private lib.
+
+  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Uefi/UefiBaseType.h>
+#include <Library/BaseLib.h>
+#include <Library/IoLib.h>
+#include <Library/DebugLib.h>
+#include <Library/CpuPlatformLib.h>
+#include <CpuRegs.h>
+#include <Register/CommonMsr.h>
+#include <Register/PttPtpRegs.h>
+
+
+/**
+  Set InSmm.Sts bit
+**/
+VOID
+PchSetInSmmSts (
+  VOID
+  )
+{
+  UINT32      Data32;
+
+  ///
+  /// Read memory location FED30880h OR with 00000001h, place the result in EAX,
+  /// and write data to lower 32 bits of MSR 1FEh (sample code available)
+  ///
+  Data32 = MmioRead32 (R_LT_UCS);
+  AsmWriteMsr32 (MSR_SPCL_CHIPSET_USAGE, Data32 | BIT0);
+  ///
+  /// Read FED30880h back to ensure the setting went through.
+  ///
+  Data32 = MmioRead32 (R_LT_UCS);
+}
+
+/**
+  Clear InSmm.Sts bit
+**/
+VOID
+PchClearInSmmSts (
+  VOID
+  )
+{
+  UINT32      Data32;
+
+  ///
+  /// Read memory location FED30880h AND with FFFFFFFEh, place the result in EAX,
+  /// and write data to lower 32 bits of MSR 1FEh (sample code available)
+  ///
+  Data32 = MmioRead32 (R_LT_UCS);
+  AsmWriteMsr32 (MSR_SPCL_CHIPSET_USAGE, Data32 & (UINT32) (~BIT0));
+  ///
+  /// Read FED30880h back to ensure the setting went through.
+  ///
+  Data32 = MmioRead32 (R_LT_UCS);
+}
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf
new file mode 100644
index 00000000..3c62b9b8
--- /dev/null
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf
@@ -0,0 +1,32 @@
+## @file
+#  PCH SMM private lib.
+#
+#  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+
+[Defines]
+INF_VERSION = 0x00010017
+BASE_NAME = SmmPchPrivateLib
+FILE_GUID = FE6495FB-7AA9-4A24-BF3E-4698F7BCE0EE
+VERSION_STRING = 1.0
+MODULE_TYPE = DXE_SMM_DRIVER
+LIBRARY_CLASS = SmmPchPrivateLib
+
+
+[LibraryClasses]
+BaseLib
+IoLib
+DebugLib
+CpuPlatformLib
+
+
+[Packages]
+MdePkg/MdePkg.dec
+AlderlakeSiliconPkg/SiPkg.dec
+
+
+[Sources]
+SmmPchPrivateLib.c
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc b/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc
index 37876cbf..238473c2 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc
+++ b/Silicon/Intel/AlderlakeSiliconPkg/Product/Alderlake/SiPkgDxeLib.dsc
@@ -11,6 +11,11 @@
 !include $(PLATFORM_SI_PACKAGE)/Fru/AdlCpu/DxeLib.dsc
 !include $(PLATFORM_SI_PACKAGE)/Fru/AdlPch/DxeLib.dsc
 
+#
+# Pch
+#
+ SmmPchPrivateLib|$(PLATFORM_SI_PACKAGE)/Pch/LibraryPrivate/SmmPchPrivateLib/SmmPchPrivateLib.inf
+
 #
 # Common
 #
diff --git a/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec b/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec
index ce9cfe59..aafce7a6 100644
--- a/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec
+++ b/Silicon/Intel/AlderlakeSiliconPkg/SiPkg.dec
@@ -33,6 +33,7 @@ IpBlock/HostBridge/IncludePrivate
 
 # Cpu
 Cpu/IncludePrivate
+Pch/IncludePrivate
 
 IncludePrivate
 
@@ -355,6 +356,7 @@ PchInfoLib|Pch/Include/Library/PchInfoLib.h
 PchPcieRpLib|Include/Library/PchPcieRpLib.h
 PchPcrLib|Include/Library/PchPcrLib.h
 PchSbiAccessLib|IpBlock/P2sb/IncludePrivate/Library/PchSbiAccessLib.h
+SmmPchPrivateLib|Pch/IncludePrivate/Library/SmmPchPrivateLib.h
 PchPciBdfLib|Pch/Include/Library/PchPciBdfLib.h
 PchRasLib|Pch/Include/Library/PchRasLib.h
 PchRtcLib|Pch/Include/Library/PchRtcLib.h
@@ -394,7 +396,7 @@ OcPlatformLib|Include/Library/OcPlatformLib.h
 PeiSpsPreMemPolicyLib|Include/Library/PeiSpsPreMemPolicyLib.h
 PmcLib|Include/Library/PmcLib.h
 PmcSsramLib|Include/Library/PmcSsramLib.h
-SpiLib|Include/Library/SpiLib.h
+SpiAccessLib|Include/Library/SpiAccessLib.h
 SpsDxeLib|Include/Library/SpsDxeLib.h
 SpsGetDxeConfigBlockLib|Include/Library/SpsGetDxeConfigBlock.h
 MeGetPeiConfigBlock|Include/Library/MeGetConfigBlock.h
-- 
2.26.2.windows.1



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2024-02-02  9:10 [edk2-devel] [PATCH] AlderlakeSiliconPkg: Update for SPI2 Protocol and Identify flash regions by GUID dorax.hsueh
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2024-04-09  6:11 dorax.hsueh
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2024-04-08 22:34 ` Nate DeSimone
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