* [Patch] AdvancedFeaturePkg/Cmos: Add Cmos related libraries.
@ 2019-05-07 7:27 Dong, Eric
2019-05-07 7:31 ` [edk2-devel] " Liming Gao
0 siblings, 1 reply; 3+ messages in thread
From: Dong, Eric @ 2019-05-07 7:27 UTC (permalink / raw)
To: devel; +Cc: Ray Ni, Michael Kubacki, Nate Desimone
https://bugzilla.tianocore.org/show_bug.cgi?id=1552
Add two libraries used to provide CMOS related operation.
CmosAccessLib exports below APIs:
CmosWrite32
CmosWrite16
CmosWrite8
CmosRead32
CmosRead16
CmosRead8
CmosInit
PlatformCmosAccessLib export below APIs:
PlatformCmosGetEntry
PlatformCmosGetNmiState
PlatformCmosAccessLib will be consumed by CmosAccessLib.
Cc: Ray Ni <ray.ni@intel.com>
Cc: Michael Kubacki <michael.a.kubacki@intel.com>
Cc: Nate Desimone <nathaniel.l.desimone@intel.com>
Signed-off-by: Eric Dong <eric.dong@intel.com>
---
.../Cmos/Include/Library/CmosAccessLib.h | 112 ++++
.../Include/Library/PlatformCmosAccessLib.h | 74 +++
.../Library/CmosAccessLib/CmosAccessLib.c | 492 ++++++++++++++++++
.../Library/CmosAccessLib/CmosAccessLib.inf | 34 ++
.../CmosAccessLib/CmosAccessLibInternal.h | 41 ++
.../PlatformCmosAccessLibNull.c | 45 ++
.../PlatformCmosAccessLibNull.inf | 30 ++
7 files changed, 828 insertions(+)
create mode 100644 Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/CmosAccessLib.h
create mode 100644 Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/PlatformCmosAccessLib.h
create mode 100644 Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosAccessLib.c
create mode 100644 Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosAccessLib.inf
create mode 100644 Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosAccessLibInternal.h
create mode 100644 Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccessLibNull/PlatformCmosAccessLibNull.c
create mode 100644 Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccessLibNull/PlatformCmosAccessLibNull.inf
diff --git a/Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/CmosAccessLib.h b/Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/CmosAccessLib.h
new file mode 100644
index 0000000..5f5029c
--- /dev/null
+++ b/Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/CmosAccessLib.h
@@ -0,0 +1,112 @@
+/** @file
+ CmosAccessLib header file.
+
+Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials are licensed and made available under
+the terms and conditions of the BSD License that accompanies this distribution.
+The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php.
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef _CMOS_ACCESS_LIB_H_
+#define _CMOS_ACCESS_LIB_H_
+
+/**
+ Read a byte value from a CMOS address.
+
+ @param [in] Address Location to read from CMOS
+
+ @return The byte value read from the CMOS address.
+**/
+UINT8
+EFIAPI
+CmosRead8 (
+ IN UINT8 Address
+ );
+
+/**
+ Write a byte value to a CMOS address.
+
+ @param [in] Address Location to write to CMOS.
+ @param [in] Data The byte value write to the CMOS address.
+**/
+VOID
+EFIAPI
+CmosWrite8 (
+ IN UINT8 Address,
+ IN UINT8 Data
+ );
+
+/**
+ Read a word value from a CMOS address.
+
+ @param [in] Address Location to read from CMOS
+
+ @return The word value read from the CMOS address.
+**/
+UINT16
+EFIAPI
+CmosRead16 (
+ IN UINT8 Address
+ );
+
+/**
+ Write a word value to a CMOS address.
+
+ @param [in] Address Location to write to CMOS.
+ @param [in] Data The word value write to the CMOS address.
+**/
+VOID
+EFIAPI
+CmosWrite16 (
+ IN UINT8 Address,
+ IN UINT16 Data
+ );
+
+/**
+ Read a dword value from a CMOS address.
+
+ @param [in] Address Location to read from CMOS
+
+ @return The dword value read from the CMOS address.
+**/
+UINT32
+EFIAPI
+CmosRead32 (
+ IN UINT8 Address
+ );
+
+/**
+ Write a dword value to a CMOS address.
+
+ @param [in] Address Location to write to CMOS.
+ @param [in] Data The dword value write to the CMOS address.
+**/
+VOID
+EFIAPI
+CmosWrite32 (
+ IN UINT8 Address,
+ IN UINT32 Data
+ );
+
+/**
+ Initialize the CMOS.
+
+ It initialize the CMOS area when Force is TRUE or the checksum is incorrect.
+
+ @param[in] Force TRUE indicating initializing the CMOS area without checking the checksum.
+
+ @retval TRUE The CMOS is initialized to default value.
+ @retval FALSE The CMOS isn't initialized to default value.
+**/
+BOOLEAN
+EFIAPI
+CmosInit (
+ IN BOOLEAN Force
+ );
+
+#endif // _CMOS_ACCESS_LIB_H_
diff --git a/Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/PlatformCmosAccessLib.h b/Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/PlatformCmosAccessLib.h
new file mode 100644
index 0000000..8c44ae2
--- /dev/null
+++ b/Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/PlatformCmosAccessLib.h
@@ -0,0 +1,74 @@
+/** @file
+ Platform CMOS Access Library Header File.
+
+Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials are licensed and made available under
+the terms and conditions of the BSD License that accompanies this distribution.
+The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php.
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef _PLATFORM_CMOS_ACCESS_LIB_H_
+#define _PLATFORM_CMOS_ACCESS_LIB_H_
+
+///
+/// Flag indicating checksum calculation doesn't include this location.
+/// NOTE: If a location isn't shown in platform CMOS entry table,
+/// it means checksum calculation doesn't include the location.
+///
+#define CMOS_EXCLUDE_FROM_CHECKSUM BIT0
+
+///
+/// Flag indicating initialization doesn't cover this location.
+/// NOTE: If a location isn't shown in platform CMOS entry table,
+/// it means the location is initialized with CMOS_DEFAULT_VALUE (0).
+///
+#define CMOS_EXCLUDE_FROM_INIT_DATA BIT1
+
+///
+/// Flag indicating the location cannot be accessed.
+/// NOTE: 0x0 ~ 0xD is implictly inaccessible.
+///
+#define CMOS_EXCLUDE_FROM_ACCESS (BIT3 | CMOS_EXCLUDE_FROM_CHECKSUM | CMOS_EXCLUDE_FROM_INIT_DATA)
+
+///
+/// Flag indicating the checksum location
+/// NOTE: At most two entries can have this flag set.
+///
+#define CMOS_CHECKSUM_LOCATION (BIT2 | CMOS_EXCLUDE_FROM_CHECKSUM | CMOS_EXCLUDE_FROM_INIT_DATA)
+
+#define CMOS_DEFAULT_VALUE 0x00
+
+typedef struct {
+ UINT8 Address;
+ UINT8 DefaultValue;
+ UINT8 Attributes;
+} CMOS_ENTRY;
+
+/**
+ Return the platform CMOS entries.
+
+ @param [out] EntryCount Return the count of platform CMOS entries.
+
+ @return Platform CMOS entries.
+**/
+CMOS_ENTRY *
+EFIAPI
+PlatformCmosGetEntry (
+ OUT UINTN *EntryCount
+ );
+
+/**
+ Return the NMI enable status.
+**/
+BOOLEAN
+EFIAPI
+PlatformCmosGetNmiState (
+ VOID
+ );
+
+#endif // _PLATFORM_CMOS_ACCESS_LIB_H_
diff --git a/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosAccessLib.c b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosAccessLib.c
new file mode 100644
index 0000000..403d8ff
--- /dev/null
+++ b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosAccessLib.c
@@ -0,0 +1,492 @@
+/** @file
+ CmosAccessLib implementation.
+
+Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials are licensed and made available under
+the terms and conditions of the BSD License that accompanies this distribution.
+The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php.
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "CmosAccessLibInternal.h"
+
+/**
+ Return the entry for the specified address in entries returned
+ from platform.
+
+ @param [in] Address The CMOS address to find.
+
+ @return A pointer to CMOS_ENTRY for the specified address,
+ or NULL if not found.
+**/
+CMOS_ENTRY *
+CmosAccessLibLocateEntry (
+ IN UINT8 Address
+ )
+{
+ UINTN Index;
+ UINTN Count;
+ CMOS_ENTRY *Entries;
+
+ Entries = PlatformCmosGetEntry (&Count);
+ for (Index = 0; Index < Count; Index++) {
+ if (Entries[Index].Address == Address) {
+ return &Entries[Index];
+ }
+ }
+
+ return NULL;
+}
+
+/**
+ Test the attributes of the Entry and return ValueIfSet if test passes
+ or !ValueIfSet if test fails. It returns DefaultValue if the Entry is
+ NULL.
+
+ @param [in] Address The CMOS address.
+ @param [in] Attributes The attributes to test.
+ @param [in] ValueIfSet The value to return if test passes.
+ @param [in] DefaultValue The value to return if Entry is NULL.
+ @param [in] Entry Pointer to entry.
+
+ @retval ValueIfSet If test passes.
+ @retval !ValueIfSet If test fails.
+ @retval DefaultValue If the Entry is NULL.
+**/
+BOOLEAN
+CmosAccessLibCheckAttribute (
+ IN UINT8 Address,
+ IN UINT8 Attributes,
+ IN BOOLEAN ValueIfSet,
+ IN BOOLEAN DefaultValue,
+ IN CMOS_ENTRY *Entry OPTIONAL
+ )
+{
+ if (Entry != NULL) {
+ ASSERT (Entry->Address == Address);
+ if ((Entry->Attributes & Attributes) == Attributes) {
+ return ValueIfSet;
+ } else {
+ return !ValueIfSet;
+ }
+ }
+
+ return DefaultValue;
+}
+
+/**
+ Check if the CMOS address needs Checksum calculation.
+
+ @param [in] Address CMOS address to be checked
+ @param [in] Entry Pointer to entry.
+
+ @retval TRUE CMOS address needs Checksum calculation.
+ @retval FALSE CMOS address doesn't need Checksum calculation.
+**/
+BOOLEAN
+CmosAccessLibNeedChecksum (
+ IN UINT8 Address,
+ IN CMOS_ENTRY *Entry OPTIONAL
+ )
+{
+ return CmosAccessLibCheckAttribute (Address, CMOS_EXCLUDE_FROM_CHECKSUM, FALSE, FALSE, Entry);
+}
+
+
+/**
+ Check if the CMOS address needs to fill default data.
+
+ @param [in] Address CMOS address to be checked
+ @param [in] Entry Pointer to entry.
+
+ @retval TRUE CMOS address need to fill default data.
+ @retval FALSE CMOS address doesn't need to fill default data.
+**/
+BOOLEAN
+CmosAccessLibNeedFillDefault (
+ IN UINT8 Address,
+ IN CMOS_ENTRY *Entry OPTIONAL
+ )
+{
+ return CmosAccessLibCheckAttribute (Address, CMOS_EXCLUDE_FROM_INIT_DATA, FALSE, TRUE, Entry);
+}
+
+/**
+ Check if the CMOS address is accessible.
+
+ @param [in] Address CMOS address to be checked.
+ @param [in] Entry Pointer to entry.
+
+ @retval TRUE CMOS address is accessible.
+ @retval FALSE CMOS address isn't accessible.
+**/
+BOOLEAN
+CmosAccessLibIsAccessible (
+ IN UINT8 Address,
+ IN CMOS_ENTRY *Entry OPTIONAL
+ )
+{
+ //
+ // CMOS 0-9, A, B, C, D are for RTC.
+ //
+ if (Address <= 0xD) {
+ return FALSE;
+ }
+ return CmosAccessLibCheckAttribute (Address, CMOS_EXCLUDE_FROM_ACCESS, FALSE, TRUE, Entry);
+}
+
+/**
+ Return the CMOS location to store checksum.
+
+ @param [out] Location Return the CMOS location to store the checksum.
+**/
+VOID
+CmosAccessLibGetChecksumLocation (
+ OUT CMOS_CHECKSUM_LOCATION_INFO *Location
+ )
+{
+ UINTN Index;
+ UINTN Count;
+ CMOS_ENTRY *Entries;
+
+ Location->Length = 0;
+
+ Entries = PlatformCmosGetEntry (&Count);
+ for (Index = 0; Index < Count; Index++) {
+ if ((Entries[Index].Attributes & CMOS_CHECKSUM_LOCATION) == CMOS_CHECKSUM_LOCATION) {
+ Location->Length++;
+ if (Location->Length == 1) {
+ Location->LowByteAddress = Entries[Index].Address;
+ } else if (Location->Length == 2) {
+ Location->HighByteAddress = Entries[Index].Address;
+ break;
+ }
+ }
+ }
+
+ ASSERT (Location->Length <= 2);
+}
+
+/**
+ Calculate the sum of CMOS values who need checksum calculation.
+
+ @param [in] Location The CMOS location to store the checksum.
+
+ @return The sum.
+**/
+UINT16
+CmosAccessLibCalculateSum (
+ IN CMOS_CHECKSUM_LOCATION_INFO *Location
+ )
+{
+ UINT16 Sum;
+ UINTN Index;
+ UINTN Count;
+ CMOS_ENTRY *Entries;
+
+ if (Location->Length == 0) {
+ return 0;
+ }
+
+ Sum = 0;
+ Entries = PlatformCmosGetEntry (&Count);
+ for (Index = 0; Index < Count; Index++) {
+ if (CmosAccessLibNeedChecksum (Entries[Index].Address, &Entries[Index])) {
+ Sum += CmosRead8 (Entries[Index].Address);
+ }
+ }
+
+ if (Location->Length == 1) {
+ return (UINT8) Sum;
+ } else {
+ return Sum;
+ }
+}
+
+/**
+ Return the checksum value stored in CMOS.
+
+ @param [in] Location The CMOS location to store the checksum.
+
+ @return The checksum value.
+**/
+UINT16
+CmosAccessLibReadChecksum (
+ IN CMOS_CHECKSUM_LOCATION_INFO *Location
+ )
+{
+ UINT16 Checksum;
+
+ Checksum = 0;
+
+ switch (Location->Length) {
+ case 2:
+ Checksum = (CmosRead8 (Location->HighByteAddress) << 8);
+ //
+ // Fall to case 1 to get the low byte value
+ //
+ case 1:
+ Checksum += CmosRead8 (Location->LowByteAddress);
+ break;
+
+ default:
+ break;
+ }
+ return Checksum;
+}
+
+
+/**
+ Write the Checksum to appropriate address.
+
+ @param [in] Location The CMOS location to store the checksum.
+ @param [in] Checksum The checksum value.
+**/
+VOID
+CmosAccessLibWriteChecksum (
+ CMOS_CHECKSUM_LOCATION_INFO *Location,
+ IN UINT16 Checksum
+ )
+{
+
+ switch (Location->Length) {
+ case 0:
+ break;
+ case 2:
+ CmosWrite8 (Location->HighByteAddress, Checksum >> 8);
+ //
+ // Fall to case 1 to update low byte value
+ //
+ case 1:
+ CmosWrite8 (Location->LowByteAddress, (UINT8) Checksum);
+ break;
+ }
+}
+
+/**
+ Read a byte value from a CMOS address.
+
+ @param [in] Address Location to read from CMOS
+
+ @return The byte value read from the CMOS address.
+**/
+UINT8
+EFIAPI
+CmosRead8 (
+ IN UINT8 Address
+ )
+{
+ if (!CmosAccessLibIsAccessible (Address, CmosAccessLibLocateEntry (Address))) {
+ return 0xFF;
+ }
+
+ if (Address <= CMOS_BANK0_LIMIT) {
+ if (PlatformCmosGetNmiState ()) {
+ Address |= BIT7;
+ }
+ IoWrite8 (PORT_70, Address);
+ return IoRead8 (PORT_71);
+ } else {
+ IoWrite8 (PORT_72, Address);
+ return IoRead8 (PORT_73);
+ }
+}
+
+/**
+ Write a byte value to a CMOS address.
+
+ It's an internal function that doesn't update the checksum.
+
+ @param [in] Address Location to write to CMOS.
+ @param [in] Data The byte value write to the CMOS address.
+**/
+VOID
+CmosAccessLibICmosWrite8 (
+ IN UINT8 Address,
+ IN UINT8 Data
+ )
+{
+ if (Address <= CMOS_BANK0_LIMIT) {
+ if (PlatformCmosGetNmiState ()) {
+ Address |= BIT7;
+ }
+ IoWrite8 (PORT_70, Address);
+ IoWrite8 (PORT_71, Data);
+ } else {
+ IoWrite8 (PORT_72, Address);
+ IoWrite8 (PORT_73, Data);
+ }
+}
+
+/**
+ Write a byte value to a CMOS address.
+
+ @param [in] Address Location to write to CMOS.
+ @param [in] Data The byte value write to the CMOS address.
+**/
+VOID
+EFIAPI
+CmosWrite8 (
+ IN UINT8 Address,
+ IN UINT8 Data
+ )
+{
+ UINT8 OriginalData;
+ CMOS_ENTRY *Entry;
+ CMOS_CHECKSUM_LOCATION_INFO ChecksumLocation;
+
+ Entry = CmosAccessLibLocateEntry (Address);
+
+ if (!CmosAccessLibIsAccessible (Address, Entry)) {
+ return;
+ }
+
+ OriginalData = CmosRead8 (Address);
+
+ CmosAccessLibICmosWrite8 (Address, Data);
+
+ if (CmosAccessLibNeedChecksum (Address, Entry)) {
+ //
+ // Sum of Data + Checksum = New Sum of Data + New Checksum = 0
+ // New Sum of Data - Sum of Data = Checksum - New Checksum
+ // New Checksum = Checksum - (New Sum of Data - Sum of Data)
+ //
+ CmosAccessLibGetChecksumLocation (&ChecksumLocation);
+ CmosAccessLibWriteChecksum (
+ &ChecksumLocation,
+ CmosAccessLibReadChecksum (&ChecksumLocation) - (Data - OriginalData)
+ );
+ }
+}
+
+/**
+ Read a word value from a CMOS address.
+
+ @param [in] Address Location to read from CMOS
+
+ @return The word value read from the CMOS address.
+**/
+UINT16
+EFIAPI
+CmosRead16 (
+ IN UINT8 Address
+ )
+{
+ return CmosRead8 (Address) + (CmosRead8 (Address + 1) << 8);
+}
+
+/**
+ Write a word value to a CMOS address.
+
+ @param [in] Address Location to write to CMOS.
+ @param [in] Data The word value write to the CMOS address.
+**/
+VOID
+EFIAPI
+CmosWrite16 (
+ IN UINT8 Address,
+ IN UINT16 Data
+ )
+{
+ CmosWrite8 (Address, (UINT8) Data);
+ CmosWrite8 (Address + 1, (UINT8) (Data >> 8));
+}
+
+/**
+ Read a dword value from a CMOS address.
+
+ @param [in] Address Location to read from CMOS
+
+ @return The dword value read from the CMOS address.
+**/
+UINT32
+EFIAPI
+CmosRead32 (
+ IN UINT8 Address
+ )
+{
+ return CmosRead16 (Address) + (CmosRead16 (Address + 2) << 16);
+}
+
+/**
+ Write a dword value to a CMOS address.
+
+ @param [in] Address Location to write to CMOS.
+ @param [in] Data The dword value write to the CMOS address.
+**/
+VOID
+EFIAPI
+CmosWrite32 (
+ IN UINT8 Address,
+ IN UINT32 Data
+ )
+{
+ CmosWrite16 (Address, (UINT16) Data);
+ CmosWrite16 (Address + 2, (UINT16) (Data >> 16));
+}
+
+
+/**
+ Initialize the CMOS.
+
+ It initialize the CMOS area when Force is TRUE or the checksum is incorrect.
+
+ @param[in] Force TRUE indicating initializing the CMOS area without checking the checksum.
+
+ @retval TRUE The CMOS is initialized to default value.
+ @retval FALSE The CMOS isn't initialized to default value.
+**/
+BOOLEAN
+EFIAPI
+CmosInit (
+ IN BOOLEAN Force
+ )
+{
+ UINTN Address;
+ CMOS_ENTRY *Entry;
+ CMOS_CHECKSUM_LOCATION_INFO ChecksumLocation;
+ UINT16 Checksum;
+
+ CmosAccessLibGetChecksumLocation (&ChecksumLocation);
+
+ if (!Force) {
+ //
+ // Initialize the CMOS area when checksum is incorrect.
+ //
+ Checksum = CmosAccessLibCalculateSum (&ChecksumLocation) + CmosAccessLibReadChecksum (&ChecksumLocation);
+ if (ChecksumLocation.Length == 1) {
+ Checksum = (UINT8) Checksum;
+ }
+
+ if (Checksum != 0) {
+ Force = TRUE;
+ }
+ }
+
+ if (Force) {
+ //
+ // Traverse through entire CMOS location and fill it with zero
+ //
+ for (Address = 0; Address <= CMOS_BANK1_LIMIT; Address++) {
+ Entry = CmosAccessLibLocateEntry ((UINT8) Address);
+ if (CmosAccessLibNeedFillDefault ((UINT8) Address, Entry)) {
+ CmosAccessLibICmosWrite8 ((UINT8) Address, (Entry == NULL) ? CMOS_DEFAULT_VALUE : Entry->DefaultValue);
+ }
+ }
+
+ //
+ // Write the New checksum to the Checksum field
+ //
+ CmosAccessLibWriteChecksum (
+ &ChecksumLocation,
+ (UINT16) (0x10000 - CmosAccessLibCalculateSum (&ChecksumLocation))
+ );
+ return TRUE;
+ }
+
+ return FALSE;
+}
diff --git a/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosAccessLib.inf b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosAccessLib.inf
new file mode 100644
index 0000000..9decaf4
--- /dev/null
+++ b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosAccessLib.inf
@@ -0,0 +1,34 @@
+### @file
+# Library producing CMOS access functionality.
+#
+# Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+#
+# This program and the accompanying materials are licensed and made available under
+# the terms and conditions of the BSD License which accompanies this distribution.
+# The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+###
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = CmosAccessLib
+ FILE_GUID = FF6B645D-C001-4ACE-9CA1-199F97C2D601
+ VERSION_STRING = 1.0
+ MODULE_TYPE = BASE
+ LIBRARY_CLASS = CmosAccessLib
+
+[Sources]
+ CmosAccessLib.c
+ CmosAccessLibInternal.h
+
+[LibraryClasses]
+ IoLib
+ DebugLib
+ PlatformCmosAccessLib
+
+[Packages]
+ MdePkg/MdePkg.dec
+ AdvancedFeaturePkg/AdvancedFeaturePkg.dec
\ No newline at end of file
diff --git a/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosAccessLibInternal.h b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosAccessLibInternal.h
new file mode 100644
index 0000000..9b6d086
--- /dev/null
+++ b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosAccessLibInternal.h
@@ -0,0 +1,41 @@
+/** @file
+ CmosAccessLib internal header file.
+
+Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials are licensed and made available under
+the terms and conditions of the BSD License that accompanies this distribution.
+The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php.
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef _CMOS_ACCESS_LIB_INTERNALS_
+#define _CMOS_ACCESS_LIB_INTERNALS_
+
+#include <Base.h>
+#include <Uefi.h>
+#include <Library/IoLib.h>
+#include <Library/DebugLib.h>
+#include <Library/CmosAccessLib.h>
+#include <Library/PlatformCmosAccessLib.h>
+
+// CMOS access Port address
+
+#define PORT_70 0x70
+#define PORT_71 0x71
+#define PORT_72 0x72
+#define PORT_73 0x73
+
+#define CMOS_BANK0_LIMIT 0x7F
+#define CMOS_BANK1_LIMIT 0xFF
+
+typedef struct {
+ UINT8 Length;
+ UINT8 LowByteAddress;
+ UINT8 HighByteAddress;
+} CMOS_CHECKSUM_LOCATION_INFO;
+
+#endif // _CMOS_ACCESS_LIB_INTERNALS_
diff --git a/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccessLibNull/PlatformCmosAccessLibNull.c b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccessLibNull/PlatformCmosAccessLibNull.c
new file mode 100644
index 0000000..b24a3f5
--- /dev/null
+++ b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccessLibNull/PlatformCmosAccessLibNull.c
@@ -0,0 +1,45 @@
+/** @file
+ Platform CMOS Access Library.
+
+Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials are licensed and made available under
+the terms and conditions of the BSD License that accompanies this distribution.
+The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php.
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <Base.h>
+#include <Library/PlatformCmosAccessLib.h>
+
+/**
+ Return the platform CMOS entries.
+
+ @param [out] EntryCount Return the count of platform CMOS entries.
+
+ @return Platform CMOS entries.
+**/
+CMOS_ENTRY *
+EFIAPI
+PlatformCmosGetEntry (
+ OUT UINTN *EntryCount
+ )
+{
+ *EntryCount = 0;
+ return NULL;
+}
+
+/**
+ Return the NMI enable status.
+**/
+BOOLEAN
+EFIAPI
+PlatformCmosGetNmiState (
+ VOID
+ )
+{
+ return FALSE;
+}
diff --git a/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccessLibNull/PlatformCmosAccessLibNull.inf b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccessLibNull/PlatformCmosAccessLibNull.inf
new file mode 100644
index 0000000..4816464
--- /dev/null
+++ b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccessLibNull/PlatformCmosAccessLibNull.inf
@@ -0,0 +1,30 @@
+### @file
+# Library producing CMOS access functionalities are relevant to platform.
+#
+# Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+#
+# This program and the accompanying materials are licensed and made available under
+# the terms and conditions of the BSD License which accompanies this distribution.
+# The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+###
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = PlatformCmosAccessLib
+ FILE_GUID = C315A8B6-FF6C-41D1-A934-7330501F308C
+ VERSION_STRING = 1.0
+ MODULE_TYPE = BASE
+ LIBRARY_CLASS = PlatformCmosAccessLib
+
+
+[Sources]
+ PlatformCmosAccessLibNull.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ AdvancedFeaturePkg/AdvancedFeaturePkg.dec
\ No newline at end of file
--
2.21.0.windows.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [edk2-devel] [Patch] AdvancedFeaturePkg/Cmos: Add Cmos related libraries.
2019-05-07 7:27 [Patch] AdvancedFeaturePkg/Cmos: Add Cmos related libraries Dong, Eric
@ 2019-05-07 7:31 ` Liming Gao
2019-05-07 7:36 ` Dong, Eric
0 siblings, 1 reply; 3+ messages in thread
From: Liming Gao @ 2019-05-07 7:31 UTC (permalink / raw)
To: devel@edk2.groups.io, Dong, Eric
Eric:
The title should include edk2-platform/ devel-MinPlatform so that people know this patch for edk2-platform devel-MinPlatform branch.
>-----Original Message-----
>From: devel@edk2.groups.io [mailto:devel@edk2.groups.io] On Behalf Of
>Dong, Eric
>Sent: Tuesday, May 07, 2019 3:28 PM
>To: devel@edk2.groups.io
>Cc: Ni, Ray <ray.ni@intel.com>; Kubacki, Michael A
><michael.a.kubacki@intel.com>; Desimone, Nathaniel L
><nathaniel.l.desimone@intel.com>
>Subject: [edk2-devel] [Patch] AdvancedFeaturePkg/Cmos: Add Cmos related
>libraries.
>
>https://bugzilla.tianocore.org/show_bug.cgi?id=1552
>
>Add two libraries used to provide CMOS related operation.
>
>CmosAccessLib exports below APIs:
> CmosWrite32
> CmosWrite16
> CmosWrite8
> CmosRead32
> CmosRead16
> CmosRead8
> CmosInit
>
>PlatformCmosAccessLib export below APIs:
> PlatformCmosGetEntry
> PlatformCmosGetNmiState
>
>PlatformCmosAccessLib will be consumed by CmosAccessLib.
>
>Cc: Ray Ni <ray.ni@intel.com>
>Cc: Michael Kubacki <michael.a.kubacki@intel.com>
>Cc: Nate Desimone <nathaniel.l.desimone@intel.com>
>Signed-off-by: Eric Dong <eric.dong@intel.com>
>---
> .../Cmos/Include/Library/CmosAccessLib.h | 112 ++++
> .../Include/Library/PlatformCmosAccessLib.h | 74 +++
> .../Library/CmosAccessLib/CmosAccessLib.c | 492 ++++++++++++++++++
> .../Library/CmosAccessLib/CmosAccessLib.inf | 34 ++
> .../CmosAccessLib/CmosAccessLibInternal.h | 41 ++
> .../PlatformCmosAccessLibNull.c | 45 ++
> .../PlatformCmosAccessLibNull.inf | 30 ++
> 7 files changed, 828 insertions(+)
> create mode 100644
>Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/CmosAccessLib.h
> create mode 100644
>Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/PlatformCmosAcc
>essLib.h
> create mode 100644
>Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosAcc
>essLib.c
> create mode 100644
>Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosAcc
>essLib.inf
> create mode 100644
>Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosAcc
>essLibInternal.h
> create mode 100644
>Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccessLibN
>ull/PlatformCmosAccessLibNull.c
> create mode 100644
>Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccessLibN
>ull/PlatformCmosAccessLibNull.inf
>
>diff --git
>a/Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/CmosAccessLib
>.h
>b/Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/CmosAccessLib
>.h
>new file mode 100644
>index 0000000..5f5029c
>--- /dev/null
>+++
>b/Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/CmosAccessLib
>.h
>@@ -0,0 +1,112 @@
>+/** @file
>+ CmosAccessLib header file.
>+
>+Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
>+This program and the accompanying materials are licensed and made
>available under
>+the terms and conditions of the BSD License that accompanies this
>distribution.
>+The full text of the license may be found at
>+http://opensource.org/licenses/bsd-license.php.
>+
>+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
>BASIS,
>+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
>EXPRESS OR IMPLIED.
>+
>+**/
>+
>+#ifndef _CMOS_ACCESS_LIB_H_
>+#define _CMOS_ACCESS_LIB_H_
>+
>+/**
>+ Read a byte value from a CMOS address.
>+
>+ @param [in] Address Location to read from CMOS
>+
>+ @return The byte value read from the CMOS address.
>+**/
>+UINT8
>+EFIAPI
>+CmosRead8 (
>+ IN UINT8 Address
>+ );
>+
>+/**
>+ Write a byte value to a CMOS address.
>+
>+ @param [in] Address Location to write to CMOS.
>+ @param [in] Data The byte value write to the CMOS address.
>+**/
>+VOID
>+EFIAPI
>+CmosWrite8 (
>+ IN UINT8 Address,
>+ IN UINT8 Data
>+ );
>+
>+/**
>+ Read a word value from a CMOS address.
>+
>+ @param [in] Address Location to read from CMOS
>+
>+ @return The word value read from the CMOS address.
>+**/
>+UINT16
>+EFIAPI
>+CmosRead16 (
>+ IN UINT8 Address
>+ );
>+
>+/**
>+ Write a word value to a CMOS address.
>+
>+ @param [in] Address Location to write to CMOS.
>+ @param [in] Data The word value write to the CMOS address.
>+**/
>+VOID
>+EFIAPI
>+CmosWrite16 (
>+ IN UINT8 Address,
>+ IN UINT16 Data
>+ );
>+
>+/**
>+ Read a dword value from a CMOS address.
>+
>+ @param [in] Address Location to read from CMOS
>+
>+ @return The dword value read from the CMOS address.
>+**/
>+UINT32
>+EFIAPI
>+CmosRead32 (
>+ IN UINT8 Address
>+ );
>+
>+/**
>+ Write a dword value to a CMOS address.
>+
>+ @param [in] Address Location to write to CMOS.
>+ @param [in] Data The dword value write to the CMOS address.
>+**/
>+VOID
>+EFIAPI
>+CmosWrite32 (
>+ IN UINT8 Address,
>+ IN UINT32 Data
>+ );
>+
>+/**
>+ Initialize the CMOS.
>+
>+ It initialize the CMOS area when Force is TRUE or the checksum is incorrect.
>+
>+ @param[in] Force TRUE indicating initializing the CMOS area without
>checking the checksum.
>+
>+ @retval TRUE The CMOS is initialized to default value.
>+ @retval FALSE The CMOS isn't initialized to default value.
>+**/
>+BOOLEAN
>+EFIAPI
>+CmosInit (
>+ IN BOOLEAN Force
>+ );
>+
>+#endif // _CMOS_ACCESS_LIB_H_
>diff --git
>a/Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/PlatformCmos
>AccessLib.h
>b/Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/PlatformCmos
>AccessLib.h
>new file mode 100644
>index 0000000..8c44ae2
>--- /dev/null
>+++
>b/Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/PlatformCmos
>AccessLib.h
>@@ -0,0 +1,74 @@
>+/** @file
>+ Platform CMOS Access Library Header File.
>+
>+Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
>+This program and the accompanying materials are licensed and made
>available under
>+the terms and conditions of the BSD License that accompanies this
>distribution.
>+The full text of the license may be found at
>+http://opensource.org/licenses/bsd-license.php.
>+
>+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
>BASIS,
>+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
>EXPRESS OR IMPLIED.
>+
>+**/
>+
>+#ifndef _PLATFORM_CMOS_ACCESS_LIB_H_
>+#define _PLATFORM_CMOS_ACCESS_LIB_H_
>+
>+///
>+/// Flag indicating checksum calculation doesn't include this location.
>+/// NOTE: If a location isn't shown in platform CMOS entry table,
>+/// it means checksum calculation doesn't include the location.
>+///
>+#define CMOS_EXCLUDE_FROM_CHECKSUM BIT0
>+
>+///
>+/// Flag indicating initialization doesn't cover this location.
>+/// NOTE: If a location isn't shown in platform CMOS entry table,
>+/// it means the location is initialized with CMOS_DEFAULT_VALUE (0).
>+///
>+#define CMOS_EXCLUDE_FROM_INIT_DATA BIT1
>+
>+///
>+/// Flag indicating the location cannot be accessed.
>+/// NOTE: 0x0 ~ 0xD is implictly inaccessible.
>+///
>+#define CMOS_EXCLUDE_FROM_ACCESS (BIT3 |
>CMOS_EXCLUDE_FROM_CHECKSUM | CMOS_EXCLUDE_FROM_INIT_DATA)
>+
>+///
>+/// Flag indicating the checksum location
>+/// NOTE: At most two entries can have this flag set.
>+///
>+#define CMOS_CHECKSUM_LOCATION (BIT2 |
>CMOS_EXCLUDE_FROM_CHECKSUM | CMOS_EXCLUDE_FROM_INIT_DATA)
>+
>+#define CMOS_DEFAULT_VALUE 0x00
>+
>+typedef struct {
>+ UINT8 Address;
>+ UINT8 DefaultValue;
>+ UINT8 Attributes;
>+} CMOS_ENTRY;
>+
>+/**
>+ Return the platform CMOS entries.
>+
>+ @param [out] EntryCount Return the count of platform CMOS entries.
>+
>+ @return Platform CMOS entries.
>+**/
>+CMOS_ENTRY *
>+EFIAPI
>+PlatformCmosGetEntry (
>+ OUT UINTN *EntryCount
>+ );
>+
>+/**
>+ Return the NMI enable status.
>+**/
>+BOOLEAN
>+EFIAPI
>+PlatformCmosGetNmiState (
>+ VOID
>+ );
>+
>+#endif // _PLATFORM_CMOS_ACCESS_LIB_H_
>diff --git
>a/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosA
>ccessLib.c
>b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosA
>ccessLib.c
>new file mode 100644
>index 0000000..403d8ff
>--- /dev/null
>+++
>b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosA
>ccessLib.c
>@@ -0,0 +1,492 @@
>+/** @file
>+ CmosAccessLib implementation.
>+
>+Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
>+This program and the accompanying materials are licensed and made
>available under
>+the terms and conditions of the BSD License that accompanies this
>distribution.
>+The full text of the license may be found at
>+http://opensource.org/licenses/bsd-license.php.
>+
>+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
>BASIS,
>+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
>EXPRESS OR IMPLIED.
>+
>+**/
>+
>+#include "CmosAccessLibInternal.h"
>+
>+/**
>+ Return the entry for the specified address in entries returned
>+ from platform.
>+
>+ @param [in] Address The CMOS address to find.
>+
>+ @return A pointer to CMOS_ENTRY for the specified address,
>+ or NULL if not found.
>+**/
>+CMOS_ENTRY *
>+CmosAccessLibLocateEntry (
>+ IN UINT8 Address
>+ )
>+{
>+ UINTN Index;
>+ UINTN Count;
>+ CMOS_ENTRY *Entries;
>+
>+ Entries = PlatformCmosGetEntry (&Count);
>+ for (Index = 0; Index < Count; Index++) {
>+ if (Entries[Index].Address == Address) {
>+ return &Entries[Index];
>+ }
>+ }
>+
>+ return NULL;
>+}
>+
>+/**
>+ Test the attributes of the Entry and return ValueIfSet if test passes
>+ or !ValueIfSet if test fails. It returns DefaultValue if the Entry is
>+ NULL.
>+
>+ @param [in] Address The CMOS address.
>+ @param [in] Attributes The attributes to test.
>+ @param [in] ValueIfSet The value to return if test passes.
>+ @param [in] DefaultValue The value to return if Entry is NULL.
>+ @param [in] Entry Pointer to entry.
>+
>+ @retval ValueIfSet If test passes.
>+ @retval !ValueIfSet If test fails.
>+ @retval DefaultValue If the Entry is NULL.
>+**/
>+BOOLEAN
>+CmosAccessLibCheckAttribute (
>+ IN UINT8 Address,
>+ IN UINT8 Attributes,
>+ IN BOOLEAN ValueIfSet,
>+ IN BOOLEAN DefaultValue,
>+ IN CMOS_ENTRY *Entry OPTIONAL
>+ )
>+{
>+ if (Entry != NULL) {
>+ ASSERT (Entry->Address == Address);
>+ if ((Entry->Attributes & Attributes) == Attributes) {
>+ return ValueIfSet;
>+ } else {
>+ return !ValueIfSet;
>+ }
>+ }
>+
>+ return DefaultValue;
>+}
>+
>+/**
>+ Check if the CMOS address needs Checksum calculation.
>+
>+ @param [in] Address CMOS address to be checked
>+ @param [in] Entry Pointer to entry.
>+
>+ @retval TRUE CMOS address needs Checksum calculation.
>+ @retval FALSE CMOS address doesn't need Checksum calculation.
>+**/
>+BOOLEAN
>+CmosAccessLibNeedChecksum (
>+ IN UINT8 Address,
>+ IN CMOS_ENTRY *Entry OPTIONAL
>+ )
>+{
>+ return CmosAccessLibCheckAttribute (Address,
>CMOS_EXCLUDE_FROM_CHECKSUM, FALSE, FALSE, Entry);
>+}
>+
>+
>+/**
>+ Check if the CMOS address needs to fill default data.
>+
>+ @param [in] Address CMOS address to be checked
>+ @param [in] Entry Pointer to entry.
>+
>+ @retval TRUE CMOS address need to fill default data.
>+ @retval FALSE CMOS address doesn't need to fill default data.
>+**/
>+BOOLEAN
>+CmosAccessLibNeedFillDefault (
>+ IN UINT8 Address,
>+ IN CMOS_ENTRY *Entry OPTIONAL
>+ )
>+{
>+ return CmosAccessLibCheckAttribute (Address,
>CMOS_EXCLUDE_FROM_INIT_DATA, FALSE, TRUE, Entry);
>+}
>+
>+/**
>+ Check if the CMOS address is accessible.
>+
>+ @param [in] Address CMOS address to be checked.
>+ @param [in] Entry Pointer to entry.
>+
>+ @retval TRUE CMOS address is accessible.
>+ @retval FALSE CMOS address isn't accessible.
>+**/
>+BOOLEAN
>+CmosAccessLibIsAccessible (
>+ IN UINT8 Address,
>+ IN CMOS_ENTRY *Entry OPTIONAL
>+ )
>+{
>+ //
>+ // CMOS 0-9, A, B, C, D are for RTC.
>+ //
>+ if (Address <= 0xD) {
>+ return FALSE;
>+ }
>+ return CmosAccessLibCheckAttribute (Address,
>CMOS_EXCLUDE_FROM_ACCESS, FALSE, TRUE, Entry);
>+}
>+
>+/**
>+ Return the CMOS location to store checksum.
>+
>+ @param [out] Location Return the CMOS location to store the checksum.
>+**/
>+VOID
>+CmosAccessLibGetChecksumLocation (
>+ OUT CMOS_CHECKSUM_LOCATION_INFO *Location
>+ )
>+{
>+ UINTN Index;
>+ UINTN Count;
>+ CMOS_ENTRY *Entries;
>+
>+ Location->Length = 0;
>+
>+ Entries = PlatformCmosGetEntry (&Count);
>+ for (Index = 0; Index < Count; Index++) {
>+ if ((Entries[Index].Attributes & CMOS_CHECKSUM_LOCATION) ==
>CMOS_CHECKSUM_LOCATION) {
>+ Location->Length++;
>+ if (Location->Length == 1) {
>+ Location->LowByteAddress = Entries[Index].Address;
>+ } else if (Location->Length == 2) {
>+ Location->HighByteAddress = Entries[Index].Address;
>+ break;
>+ }
>+ }
>+ }
>+
>+ ASSERT (Location->Length <= 2);
>+}
>+
>+/**
>+ Calculate the sum of CMOS values who need checksum calculation.
>+
>+ @param [in] Location The CMOS location to store the checksum.
>+
>+ @return The sum.
>+**/
>+UINT16
>+CmosAccessLibCalculateSum (
>+ IN CMOS_CHECKSUM_LOCATION_INFO *Location
>+ )
>+{
>+ UINT16 Sum;
>+ UINTN Index;
>+ UINTN Count;
>+ CMOS_ENTRY *Entries;
>+
>+ if (Location->Length == 0) {
>+ return 0;
>+ }
>+
>+ Sum = 0;
>+ Entries = PlatformCmosGetEntry (&Count);
>+ for (Index = 0; Index < Count; Index++) {
>+ if (CmosAccessLibNeedChecksum (Entries[Index].Address,
>&Entries[Index])) {
>+ Sum += CmosRead8 (Entries[Index].Address);
>+ }
>+ }
>+
>+ if (Location->Length == 1) {
>+ return (UINT8) Sum;
>+ } else {
>+ return Sum;
>+ }
>+}
>+
>+/**
>+ Return the checksum value stored in CMOS.
>+
>+ @param [in] Location The CMOS location to store the checksum.
>+
>+ @return The checksum value.
>+**/
>+UINT16
>+CmosAccessLibReadChecksum (
>+ IN CMOS_CHECKSUM_LOCATION_INFO *Location
>+ )
>+{
>+ UINT16 Checksum;
>+
>+ Checksum = 0;
>+
>+ switch (Location->Length) {
>+ case 2:
>+ Checksum = (CmosRead8 (Location->HighByteAddress) << 8);
>+ //
>+ // Fall to case 1 to get the low byte value
>+ //
>+ case 1:
>+ Checksum += CmosRead8 (Location->LowByteAddress);
>+ break;
>+
>+ default:
>+ break;
>+ }
>+ return Checksum;
>+}
>+
>+
>+/**
>+ Write the Checksum to appropriate address.
>+
>+ @param [in] Location The CMOS location to store the checksum.
>+ @param [in] Checksum The checksum value.
>+**/
>+VOID
>+CmosAccessLibWriteChecksum (
>+ CMOS_CHECKSUM_LOCATION_INFO *Location,
>+ IN UINT16 Checksum
>+ )
>+{
>+
>+ switch (Location->Length) {
>+ case 0:
>+ break;
>+ case 2:
>+ CmosWrite8 (Location->HighByteAddress, Checksum >> 8);
>+ //
>+ // Fall to case 1 to update low byte value
>+ //
>+ case 1:
>+ CmosWrite8 (Location->LowByteAddress, (UINT8) Checksum);
>+ break;
>+ }
>+}
>+
>+/**
>+ Read a byte value from a CMOS address.
>+
>+ @param [in] Address Location to read from CMOS
>+
>+ @return The byte value read from the CMOS address.
>+**/
>+UINT8
>+EFIAPI
>+CmosRead8 (
>+ IN UINT8 Address
>+ )
>+{
>+ if (!CmosAccessLibIsAccessible (Address, CmosAccessLibLocateEntry
>(Address))) {
>+ return 0xFF;
>+ }
>+
>+ if (Address <= CMOS_BANK0_LIMIT) {
>+ if (PlatformCmosGetNmiState ()) {
>+ Address |= BIT7;
>+ }
>+ IoWrite8 (PORT_70, Address);
>+ return IoRead8 (PORT_71);
>+ } else {
>+ IoWrite8 (PORT_72, Address);
>+ return IoRead8 (PORT_73);
>+ }
>+}
>+
>+/**
>+ Write a byte value to a CMOS address.
>+
>+ It's an internal function that doesn't update the checksum.
>+
>+ @param [in] Address Location to write to CMOS.
>+ @param [in] Data The byte value write to the CMOS address.
>+**/
>+VOID
>+CmosAccessLibICmosWrite8 (
>+ IN UINT8 Address,
>+ IN UINT8 Data
>+ )
>+{
>+ if (Address <= CMOS_BANK0_LIMIT) {
>+ if (PlatformCmosGetNmiState ()) {
>+ Address |= BIT7;
>+ }
>+ IoWrite8 (PORT_70, Address);
>+ IoWrite8 (PORT_71, Data);
>+ } else {
>+ IoWrite8 (PORT_72, Address);
>+ IoWrite8 (PORT_73, Data);
>+ }
>+}
>+
>+/**
>+ Write a byte value to a CMOS address.
>+
>+ @param [in] Address Location to write to CMOS.
>+ @param [in] Data The byte value write to the CMOS address.
>+**/
>+VOID
>+EFIAPI
>+CmosWrite8 (
>+ IN UINT8 Address,
>+ IN UINT8 Data
>+ )
>+{
>+ UINT8 OriginalData;
>+ CMOS_ENTRY *Entry;
>+ CMOS_CHECKSUM_LOCATION_INFO ChecksumLocation;
>+
>+ Entry = CmosAccessLibLocateEntry (Address);
>+
>+ if (!CmosAccessLibIsAccessible (Address, Entry)) {
>+ return;
>+ }
>+
>+ OriginalData = CmosRead8 (Address);
>+
>+ CmosAccessLibICmosWrite8 (Address, Data);
>+
>+ if (CmosAccessLibNeedChecksum (Address, Entry)) {
>+ //
>+ // Sum of Data + Checksum = New Sum of Data + New Checksum = 0
>+ // New Sum of Data - Sum of Data = Checksum - New Checksum
>+ // New Checksum = Checksum - (New Sum of Data - Sum of Data)
>+ //
>+ CmosAccessLibGetChecksumLocation (&ChecksumLocation);
>+ CmosAccessLibWriteChecksum (
>+ &ChecksumLocation,
>+ CmosAccessLibReadChecksum (&ChecksumLocation) - (Data -
>OriginalData)
>+ );
>+ }
>+}
>+
>+/**
>+ Read a word value from a CMOS address.
>+
>+ @param [in] Address Location to read from CMOS
>+
>+ @return The word value read from the CMOS address.
>+**/
>+UINT16
>+EFIAPI
>+CmosRead16 (
>+ IN UINT8 Address
>+ )
>+{
>+ return CmosRead8 (Address) + (CmosRead8 (Address + 1) << 8);
>+}
>+
>+/**
>+ Write a word value to a CMOS address.
>+
>+ @param [in] Address Location to write to CMOS.
>+ @param [in] Data The word value write to the CMOS address.
>+**/
>+VOID
>+EFIAPI
>+CmosWrite16 (
>+ IN UINT8 Address,
>+ IN UINT16 Data
>+ )
>+{
>+ CmosWrite8 (Address, (UINT8) Data);
>+ CmosWrite8 (Address + 1, (UINT8) (Data >> 8));
>+}
>+
>+/**
>+ Read a dword value from a CMOS address.
>+
>+ @param [in] Address Location to read from CMOS
>+
>+ @return The dword value read from the CMOS address.
>+**/
>+UINT32
>+EFIAPI
>+CmosRead32 (
>+ IN UINT8 Address
>+ )
>+{
>+ return CmosRead16 (Address) + (CmosRead16 (Address + 2) << 16);
>+}
>+
>+/**
>+ Write a dword value to a CMOS address.
>+
>+ @param [in] Address Location to write to CMOS.
>+ @param [in] Data The dword value write to the CMOS address.
>+**/
>+VOID
>+EFIAPI
>+CmosWrite32 (
>+ IN UINT8 Address,
>+ IN UINT32 Data
>+ )
>+{
>+ CmosWrite16 (Address, (UINT16) Data);
>+ CmosWrite16 (Address + 2, (UINT16) (Data >> 16));
>+}
>+
>+
>+/**
>+ Initialize the CMOS.
>+
>+ It initialize the CMOS area when Force is TRUE or the checksum is incorrect.
>+
>+ @param[in] Force TRUE indicating initializing the CMOS area without
>checking the checksum.
>+
>+ @retval TRUE The CMOS is initialized to default value.
>+ @retval FALSE The CMOS isn't initialized to default value.
>+**/
>+BOOLEAN
>+EFIAPI
>+CmosInit (
>+ IN BOOLEAN Force
>+ )
>+{
>+ UINTN Address;
>+ CMOS_ENTRY *Entry;
>+ CMOS_CHECKSUM_LOCATION_INFO ChecksumLocation;
>+ UINT16 Checksum;
>+
>+ CmosAccessLibGetChecksumLocation (&ChecksumLocation);
>+
>+ if (!Force) {
>+ //
>+ // Initialize the CMOS area when checksum is incorrect.
>+ //
>+ Checksum = CmosAccessLibCalculateSum (&ChecksumLocation) +
>CmosAccessLibReadChecksum (&ChecksumLocation);
>+ if (ChecksumLocation.Length == 1) {
>+ Checksum = (UINT8) Checksum;
>+ }
>+
>+ if (Checksum != 0) {
>+ Force = TRUE;
>+ }
>+ }
>+
>+ if (Force) {
>+ //
>+ // Traverse through entire CMOS location and fill it with zero
>+ //
>+ for (Address = 0; Address <= CMOS_BANK1_LIMIT; Address++) {
>+ Entry = CmosAccessLibLocateEntry ((UINT8) Address);
>+ if (CmosAccessLibNeedFillDefault ((UINT8) Address, Entry)) {
>+ CmosAccessLibICmosWrite8 ((UINT8) Address, (Entry == NULL) ?
>CMOS_DEFAULT_VALUE : Entry->DefaultValue);
>+ }
>+ }
>+
>+ //
>+ // Write the New checksum to the Checksum field
>+ //
>+ CmosAccessLibWriteChecksum (
>+ &ChecksumLocation,
>+ (UINT16) (0x10000 - CmosAccessLibCalculateSum (&ChecksumLocation))
>+ );
>+ return TRUE;
>+ }
>+
>+ return FALSE;
>+}
>diff --git
>a/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosA
>ccessLib.inf
>b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosA
>ccessLib.inf
>new file mode 100644
>index 0000000..9decaf4
>--- /dev/null
>+++
>b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosA
>ccessLib.inf
>@@ -0,0 +1,34 @@
>+### @file
>+# Library producing CMOS access functionality.
>+#
>+# Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
>+#
>+# This program and the accompanying materials are licensed and made
>available under
>+# the terms and conditions of the BSD License which accompanies this
>distribution.
>+# The full text of the license may be found at
>+# http://opensource.org/licenses/bsd-license.php
>+#
>+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
>BASIS,
>+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
>EXPRESS OR IMPLIED.
>+#
>+###
>+[Defines]
>+ INF_VERSION = 0x00010005
>+ BASE_NAME = CmosAccessLib
>+ FILE_GUID = FF6B645D-C001-4ACE-9CA1-199F97C2D601
>+ VERSION_STRING = 1.0
>+ MODULE_TYPE = BASE
>+ LIBRARY_CLASS = CmosAccessLib
>+
>+[Sources]
>+ CmosAccessLib.c
>+ CmosAccessLibInternal.h
>+
>+[LibraryClasses]
>+ IoLib
>+ DebugLib
>+ PlatformCmosAccessLib
>+
>+[Packages]
>+ MdePkg/MdePkg.dec
>+ AdvancedFeaturePkg/AdvancedFeaturePkg.dec
>\ No newline at end of file
>diff --git
>a/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosA
>ccessLibInternal.h
>b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosA
>ccessLibInternal.h
>new file mode 100644
>index 0000000..9b6d086
>--- /dev/null
>+++
>b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosA
>ccessLibInternal.h
>@@ -0,0 +1,41 @@
>+/** @file
>+ CmosAccessLib internal header file.
>+
>+Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
>+This program and the accompanying materials are licensed and made
>available under
>+the terms and conditions of the BSD License that accompanies this
>distribution.
>+The full text of the license may be found at
>+http://opensource.org/licenses/bsd-license.php.
>+
>+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
>BASIS,
>+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
>EXPRESS OR IMPLIED.
>+
>+**/
>+
>+#ifndef _CMOS_ACCESS_LIB_INTERNALS_
>+#define _CMOS_ACCESS_LIB_INTERNALS_
>+
>+#include <Base.h>
>+#include <Uefi.h>
>+#include <Library/IoLib.h>
>+#include <Library/DebugLib.h>
>+#include <Library/CmosAccessLib.h>
>+#include <Library/PlatformCmosAccessLib.h>
>+
>+// CMOS access Port address
>+
>+#define PORT_70 0x70
>+#define PORT_71 0x71
>+#define PORT_72 0x72
>+#define PORT_73 0x73
>+
>+#define CMOS_BANK0_LIMIT 0x7F
>+#define CMOS_BANK1_LIMIT 0xFF
>+
>+typedef struct {
>+ UINT8 Length;
>+ UINT8 LowByteAddress;
>+ UINT8 HighByteAddress;
>+} CMOS_CHECKSUM_LOCATION_INFO;
>+
>+#endif // _CMOS_ACCESS_LIB_INTERNALS_
>diff --git
>a/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccessLib
>Null/PlatformCmosAccessLibNull.c
>b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccessLib
>Null/PlatformCmosAccessLibNull.c
>new file mode 100644
>index 0000000..b24a3f5
>--- /dev/null
>+++
>b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccessLib
>Null/PlatformCmosAccessLibNull.c
>@@ -0,0 +1,45 @@
>+/** @file
>+ Platform CMOS Access Library.
>+
>+Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
>+This program and the accompanying materials are licensed and made
>available under
>+the terms and conditions of the BSD License that accompanies this
>distribution.
>+The full text of the license may be found at
>+http://opensource.org/licenses/bsd-license.php.
>+
>+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
>BASIS,
>+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
>EXPRESS OR IMPLIED.
>+
>+**/
>+
>+#include <Base.h>
>+#include <Library/PlatformCmosAccessLib.h>
>+
>+/**
>+ Return the platform CMOS entries.
>+
>+ @param [out] EntryCount Return the count of platform CMOS entries.
>+
>+ @return Platform CMOS entries.
>+**/
>+CMOS_ENTRY *
>+EFIAPI
>+PlatformCmosGetEntry (
>+ OUT UINTN *EntryCount
>+ )
>+{
>+ *EntryCount = 0;
>+ return NULL;
>+}
>+
>+/**
>+ Return the NMI enable status.
>+**/
>+BOOLEAN
>+EFIAPI
>+PlatformCmosGetNmiState (
>+ VOID
>+ )
>+{
>+ return FALSE;
>+}
>diff --git
>a/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccessLib
>Null/PlatformCmosAccessLibNull.inf
>b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccessLib
>Null/PlatformCmosAccessLibNull.inf
>new file mode 100644
>index 0000000..4816464
>--- /dev/null
>+++
>b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccessLib
>Null/PlatformCmosAccessLibNull.inf
>@@ -0,0 +1,30 @@
>+### @file
>+# Library producing CMOS access functionalities are relevant to platform.
>+#
>+# Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
>+#
>+# This program and the accompanying materials are licensed and made
>available under
>+# the terms and conditions of the BSD License which accompanies this
>distribution.
>+# The full text of the license may be found at
>+# http://opensource.org/licenses/bsd-license.php
>+#
>+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
>BASIS,
>+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
>EXPRESS OR IMPLIED.
>+#
>+###
>+
>+[Defines]
>+ INF_VERSION = 0x00010005
>+ BASE_NAME = PlatformCmosAccessLib
>+ FILE_GUID = C315A8B6-FF6C-41D1-A934-7330501F308C
>+ VERSION_STRING = 1.0
>+ MODULE_TYPE = BASE
>+ LIBRARY_CLASS = PlatformCmosAccessLib
>+
>+
>+[Sources]
>+ PlatformCmosAccessLibNull.c
>+
>+[Packages]
>+ MdePkg/MdePkg.dec
>+ AdvancedFeaturePkg/AdvancedFeaturePkg.dec
>\ No newline at end of file
>--
>2.21.0.windows.1
>
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [edk2-devel] [Patch] AdvancedFeaturePkg/Cmos: Add Cmos related libraries.
2019-05-07 7:31 ` [edk2-devel] " Liming Gao
@ 2019-05-07 7:36 ` Dong, Eric
0 siblings, 0 replies; 3+ messages in thread
From: Dong, Eric @ 2019-05-07 7:36 UTC (permalink / raw)
To: Gao, Liming, devel@edk2.groups.io
Liming,
Got it. Already send a mail which include edk2-platform. Will include edk2-platform/devel-MinPlatform if V2 version patch needs.
Thanks,
Eric
> -----Original Message-----
> From: Gao, Liming
> Sent: Tuesday, May 7, 2019 3:32 PM
> To: devel@edk2.groups.io; Dong, Eric <eric.dong@intel.com>
> Subject: RE: [edk2-devel] [Patch] AdvancedFeaturePkg/Cmos: Add Cmos
> related libraries.
>
> Eric:
> The title should include edk2-platform/ devel-MinPlatform so that people
> know this patch for edk2-platform devel-MinPlatform branch.
>
> >-----Original Message-----
> >From: devel@edk2.groups.io [mailto:devel@edk2.groups.io] On Behalf Of
> >Dong, Eric
> >Sent: Tuesday, May 07, 2019 3:28 PM
> >To: devel@edk2.groups.io
> >Cc: Ni, Ray <ray.ni@intel.com>; Kubacki, Michael A
> ><michael.a.kubacki@intel.com>; Desimone, Nathaniel L
> ><nathaniel.l.desimone@intel.com>
> >Subject: [edk2-devel] [Patch] AdvancedFeaturePkg/Cmos: Add Cmos
> related
> >libraries.
> >
> >https://bugzilla.tianocore.org/show_bug.cgi?id=1552
> >
> >Add two libraries used to provide CMOS related operation.
> >
> >CmosAccessLib exports below APIs:
> > CmosWrite32
> > CmosWrite16
> > CmosWrite8
> > CmosRead32
> > CmosRead16
> > CmosRead8
> > CmosInit
> >
> >PlatformCmosAccessLib export below APIs:
> > PlatformCmosGetEntry
> > PlatformCmosGetNmiState
> >
> >PlatformCmosAccessLib will be consumed by CmosAccessLib.
> >
> >Cc: Ray Ni <ray.ni@intel.com>
> >Cc: Michael Kubacki <michael.a.kubacki@intel.com>
> >Cc: Nate Desimone <nathaniel.l.desimone@intel.com>
> >Signed-off-by: Eric Dong <eric.dong@intel.com>
> >---
> > .../Cmos/Include/Library/CmosAccessLib.h | 112 ++++
> > .../Include/Library/PlatformCmosAccessLib.h | 74 +++
> > .../Library/CmosAccessLib/CmosAccessLib.c | 492 ++++++++++++++++++
> > .../Library/CmosAccessLib/CmosAccessLib.inf | 34 ++
> > .../CmosAccessLib/CmosAccessLibInternal.h | 41 ++
> > .../PlatformCmosAccessLibNull.c | 45 ++
> > .../PlatformCmosAccessLibNull.inf | 30 ++
> > 7 files changed, 828 insertions(+)
> > create mode 100644
> >Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/CmosAccessLib
> .h
> > create mode 100644
> >Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/PlatformCmos
> Acc
> >essLib.h
> > create mode 100644
> >Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosA
> cc
> >essLib.c
> > create mode 100644
> >Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosA
> cc
> >essLib.inf
> > create mode 100644
> >Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/CmosA
> cc
> >essLibInternal.h
> > create mode 100644
> >Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccessLib
> N
> >ull/PlatformCmosAccessLibNull.c
> > create mode 100644
> >Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccessLib
> N
> >ull/PlatformCmosAccessLibNull.inf
> >
> >diff --git
> >a/Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/CmosAccessL
> ib
> >.h
> >b/Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/CmosAccess
> Lib
> >.h
> >new file mode 100644
> >index 0000000..5f5029c
> >--- /dev/null
> >+++
> >b/Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/CmosAccess
> Lib
> >.h
> >@@ -0,0 +1,112 @@
> >+/** @file
> >+ CmosAccessLib header file.
> >+
> >+Copyright (c) 2019, Intel Corporation. All rights reserved.<BR> This
> >+program and the accompanying materials are licensed and made
> >available under
> >+the terms and conditions of the BSD License that accompanies this
> >distribution.
> >+The full text of the license may be found at
> >+http://opensource.org/licenses/bsd-license.php.
> >+
> >+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> >BASIS,
> >+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> >EXPRESS OR IMPLIED.
> >+
> >+**/
> >+
> >+#ifndef _CMOS_ACCESS_LIB_H_
> >+#define _CMOS_ACCESS_LIB_H_
> >+
> >+/**
> >+ Read a byte value from a CMOS address.
> >+
> >+ @param [in] Address Location to read from CMOS
> >+
> >+ @return The byte value read from the CMOS address.
> >+**/
> >+UINT8
> >+EFIAPI
> >+CmosRead8 (
> >+ IN UINT8 Address
> >+ );
> >+
> >+/**
> >+ Write a byte value to a CMOS address.
> >+
> >+ @param [in] Address Location to write to CMOS.
> >+ @param [in] Data The byte value write to the CMOS address.
> >+**/
> >+VOID
> >+EFIAPI
> >+CmosWrite8 (
> >+ IN UINT8 Address,
> >+ IN UINT8 Data
> >+ );
> >+
> >+/**
> >+ Read a word value from a CMOS address.
> >+
> >+ @param [in] Address Location to read from CMOS
> >+
> >+ @return The word value read from the CMOS address.
> >+**/
> >+UINT16
> >+EFIAPI
> >+CmosRead16 (
> >+ IN UINT8 Address
> >+ );
> >+
> >+/**
> >+ Write a word value to a CMOS address.
> >+
> >+ @param [in] Address Location to write to CMOS.
> >+ @param [in] Data The word value write to the CMOS address.
> >+**/
> >+VOID
> >+EFIAPI
> >+CmosWrite16 (
> >+ IN UINT8 Address,
> >+ IN UINT16 Data
> >+ );
> >+
> >+/**
> >+ Read a dword value from a CMOS address.
> >+
> >+ @param [in] Address Location to read from CMOS
> >+
> >+ @return The dword value read from the CMOS address.
> >+**/
> >+UINT32
> >+EFIAPI
> >+CmosRead32 (
> >+ IN UINT8 Address
> >+ );
> >+
> >+/**
> >+ Write a dword value to a CMOS address.
> >+
> >+ @param [in] Address Location to write to CMOS.
> >+ @param [in] Data The dword value write to the CMOS address.
> >+**/
> >+VOID
> >+EFIAPI
> >+CmosWrite32 (
> >+ IN UINT8 Address,
> >+ IN UINT32 Data
> >+ );
> >+
> >+/**
> >+ Initialize the CMOS.
> >+
> >+ It initialize the CMOS area when Force is TRUE or the checksum is
> incorrect.
> >+
> >+ @param[in] Force TRUE indicating initializing the CMOS area
> >+ without
> >checking the checksum.
> >+
> >+ @retval TRUE The CMOS is initialized to default value.
> >+ @retval FALSE The CMOS isn't initialized to default value.
> >+**/
> >+BOOLEAN
> >+EFIAPI
> >+CmosInit (
> >+ IN BOOLEAN Force
> >+ );
> >+
> >+#endif // _CMOS_ACCESS_LIB_H_
> >diff --git
> >a/Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/PlatformCmo
> s
> >AccessLib.h
> >b/Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/PlatformCm
> os
> >AccessLib.h
> >new file mode 100644
> >index 0000000..8c44ae2
> >--- /dev/null
> >+++
> >b/Platform/Intel/AdvancedFeaturePkg/Cmos/Include/Library/PlatformCm
> os
> >AccessLib.h
> >@@ -0,0 +1,74 @@
> >+/** @file
> >+ Platform CMOS Access Library Header File.
> >+
> >+Copyright (c) 2019, Intel Corporation. All rights reserved.<BR> This
> >+program and the accompanying materials are licensed and made
> >available under
> >+the terms and conditions of the BSD License that accompanies this
> >distribution.
> >+The full text of the license may be found at
> >+http://opensource.org/licenses/bsd-license.php.
> >+
> >+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> >BASIS,
> >+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> >EXPRESS OR IMPLIED.
> >+
> >+**/
> >+
> >+#ifndef _PLATFORM_CMOS_ACCESS_LIB_H_
> >+#define _PLATFORM_CMOS_ACCESS_LIB_H_
> >+
> >+///
> >+/// Flag indicating checksum calculation doesn't include this location.
> >+/// NOTE: If a location isn't shown in platform CMOS entry table,
> >+/// it means checksum calculation doesn't include the location.
> >+///
> >+#define CMOS_EXCLUDE_FROM_CHECKSUM BIT0
> >+
> >+///
> >+/// Flag indicating initialization doesn't cover this location.
> >+/// NOTE: If a location isn't shown in platform CMOS entry table,
> >+/// it means the location is initialized with CMOS_DEFAULT_VALUE (0).
> >+///
> >+#define CMOS_EXCLUDE_FROM_INIT_DATA BIT1
> >+
> >+///
> >+/// Flag indicating the location cannot be accessed.
> >+/// NOTE: 0x0 ~ 0xD is implictly inaccessible.
> >+///
> >+#define CMOS_EXCLUDE_FROM_ACCESS (BIT3 |
> >CMOS_EXCLUDE_FROM_CHECKSUM | CMOS_EXCLUDE_FROM_INIT_DATA)
> >+
> >+///
> >+/// Flag indicating the checksum location /// NOTE: At most two
> >+entries can have this flag set.
> >+///
> >+#define CMOS_CHECKSUM_LOCATION (BIT2 |
> >CMOS_EXCLUDE_FROM_CHECKSUM | CMOS_EXCLUDE_FROM_INIT_DATA)
> >+
> >+#define CMOS_DEFAULT_VALUE 0x00
> >+
> >+typedef struct {
> >+ UINT8 Address;
> >+ UINT8 DefaultValue;
> >+ UINT8 Attributes;
> >+} CMOS_ENTRY;
> >+
> >+/**
> >+ Return the platform CMOS entries.
> >+
> >+ @param [out] EntryCount Return the count of platform CMOS entries.
> >+
> >+ @return Platform CMOS entries.
> >+**/
> >+CMOS_ENTRY *
> >+EFIAPI
> >+PlatformCmosGetEntry (
> >+ OUT UINTN *EntryCount
> >+ );
> >+
> >+/**
> >+ Return the NMI enable status.
> >+**/
> >+BOOLEAN
> >+EFIAPI
> >+PlatformCmosGetNmiState (
> >+ VOID
> >+ );
> >+
> >+#endif // _PLATFORM_CMOS_ACCESS_LIB_H_
> >diff --git
> >a/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/Cmos
> A
> >ccessLib.c
> >b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/Cmo
> sA
> >ccessLib.c
> >new file mode 100644
> >index 0000000..403d8ff
> >--- /dev/null
> >+++
> >b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/Cmo
> sA
> >ccessLib.c
> >@@ -0,0 +1,492 @@
> >+/** @file
> >+ CmosAccessLib implementation.
> >+
> >+Copyright (c) 2019, Intel Corporation. All rights reserved.<BR> This
> >+program and the accompanying materials are licensed and made
> >available under
> >+the terms and conditions of the BSD License that accompanies this
> >distribution.
> >+The full text of the license may be found at
> >+http://opensource.org/licenses/bsd-license.php.
> >+
> >+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> >BASIS,
> >+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> >EXPRESS OR IMPLIED.
> >+
> >+**/
> >+
> >+#include "CmosAccessLibInternal.h"
> >+
> >+/**
> >+ Return the entry for the specified address in entries returned
> >+ from platform.
> >+
> >+ @param [in] Address The CMOS address to find.
> >+
> >+ @return A pointer to CMOS_ENTRY for the specified address,
> >+ or NULL if not found.
> >+**/
> >+CMOS_ENTRY *
> >+CmosAccessLibLocateEntry (
> >+ IN UINT8 Address
> >+ )
> >+{
> >+ UINTN Index;
> >+ UINTN Count;
> >+ CMOS_ENTRY *Entries;
> >+
> >+ Entries = PlatformCmosGetEntry (&Count); for (Index = 0; Index <
> >+ Count; Index++) {
> >+ if (Entries[Index].Address == Address) {
> >+ return &Entries[Index];
> >+ }
> >+ }
> >+
> >+ return NULL;
> >+}
> >+
> >+/**
> >+ Test the attributes of the Entry and return ValueIfSet if test
> >+passes
> >+ or !ValueIfSet if test fails. It returns DefaultValue if the Entry
> >+is
> >+ NULL.
> >+
> >+ @param [in] Address The CMOS address.
> >+ @param [in] Attributes The attributes to test.
> >+ @param [in] ValueIfSet The value to return if test passes.
> >+ @param [in] DefaultValue The value to return if Entry is NULL.
> >+ @param [in] Entry Pointer to entry.
> >+
> >+ @retval ValueIfSet If test passes.
> >+ @retval !ValueIfSet If test fails.
> >+ @retval DefaultValue If the Entry is NULL.
> >+**/
> >+BOOLEAN
> >+CmosAccessLibCheckAttribute (
> >+ IN UINT8 Address,
> >+ IN UINT8 Attributes,
> >+ IN BOOLEAN ValueIfSet,
> >+ IN BOOLEAN DefaultValue,
> >+ IN CMOS_ENTRY *Entry OPTIONAL
> >+ )
> >+{
> >+ if (Entry != NULL) {
> >+ ASSERT (Entry->Address == Address);
> >+ if ((Entry->Attributes & Attributes) == Attributes) {
> >+ return ValueIfSet;
> >+ } else {
> >+ return !ValueIfSet;
> >+ }
> >+ }
> >+
> >+ return DefaultValue;
> >+}
> >+
> >+/**
> >+ Check if the CMOS address needs Checksum calculation.
> >+
> >+ @param [in] Address CMOS address to be checked
> >+ @param [in] Entry Pointer to entry.
> >+
> >+ @retval TRUE CMOS address needs Checksum calculation.
> >+ @retval FALSE CMOS address doesn't need Checksum calculation.
> >+**/
> >+BOOLEAN
> >+CmosAccessLibNeedChecksum (
> >+ IN UINT8 Address,
> >+ IN CMOS_ENTRY *Entry OPTIONAL
> >+ )
> >+{
> >+ return CmosAccessLibCheckAttribute (Address,
> >CMOS_EXCLUDE_FROM_CHECKSUM, FALSE, FALSE, Entry);
> >+}
> >+
> >+
> >+/**
> >+ Check if the CMOS address needs to fill default data.
> >+
> >+ @param [in] Address CMOS address to be checked
> >+ @param [in] Entry Pointer to entry.
> >+
> >+ @retval TRUE CMOS address need to fill default data.
> >+ @retval FALSE CMOS address doesn't need to fill default data.
> >+**/
> >+BOOLEAN
> >+CmosAccessLibNeedFillDefault (
> >+ IN UINT8 Address,
> >+ IN CMOS_ENTRY *Entry OPTIONAL
> >+ )
> >+{
> >+ return CmosAccessLibCheckAttribute (Address,
> >CMOS_EXCLUDE_FROM_INIT_DATA, FALSE, TRUE, Entry);
> >+}
> >+
> >+/**
> >+ Check if the CMOS address is accessible.
> >+
> >+ @param [in] Address CMOS address to be checked.
> >+ @param [in] Entry Pointer to entry.
> >+
> >+ @retval TRUE CMOS address is accessible.
> >+ @retval FALSE CMOS address isn't accessible.
> >+**/
> >+BOOLEAN
> >+CmosAccessLibIsAccessible (
> >+ IN UINT8 Address,
> >+ IN CMOS_ENTRY *Entry OPTIONAL
> >+ )
> >+{
> >+ //
> >+ // CMOS 0-9, A, B, C, D are for RTC.
> >+ //
> >+ if (Address <= 0xD) {
> >+ return FALSE;
> >+ }
> >+ return CmosAccessLibCheckAttribute (Address,
> >CMOS_EXCLUDE_FROM_ACCESS, FALSE, TRUE, Entry);
> >+}
> >+
> >+/**
> >+ Return the CMOS location to store checksum.
> >+
> >+ @param [out] Location Return the CMOS location to store the checksum.
> >+**/
> >+VOID
> >+CmosAccessLibGetChecksumLocation (
> >+ OUT CMOS_CHECKSUM_LOCATION_INFO *Location
> >+ )
> >+{
> >+ UINTN Index;
> >+ UINTN Count;
> >+ CMOS_ENTRY *Entries;
> >+
> >+ Location->Length = 0;
> >+
> >+ Entries = PlatformCmosGetEntry (&Count); for (Index = 0; Index <
> >+ Count; Index++) {
> >+ if ((Entries[Index].Attributes & CMOS_CHECKSUM_LOCATION) ==
> >CMOS_CHECKSUM_LOCATION) {
> >+ Location->Length++;
> >+ if (Location->Length == 1) {
> >+ Location->LowByteAddress = Entries[Index].Address;
> >+ } else if (Location->Length == 2) {
> >+ Location->HighByteAddress = Entries[Index].Address;
> >+ break;
> >+ }
> >+ }
> >+ }
> >+
> >+ ASSERT (Location->Length <= 2);
> >+}
> >+
> >+/**
> >+ Calculate the sum of CMOS values who need checksum calculation.
> >+
> >+ @param [in] Location The CMOS location to store the checksum.
> >+
> >+ @return The sum.
> >+**/
> >+UINT16
> >+CmosAccessLibCalculateSum (
> >+ IN CMOS_CHECKSUM_LOCATION_INFO *Location
> >+ )
> >+{
> >+ UINT16 Sum;
> >+ UINTN Index;
> >+ UINTN Count;
> >+ CMOS_ENTRY *Entries;
> >+
> >+ if (Location->Length == 0) {
> >+ return 0;
> >+ }
> >+
> >+ Sum = 0;
> >+ Entries = PlatformCmosGetEntry (&Count); for (Index = 0; Index <
> >+ Count; Index++) {
> >+ if (CmosAccessLibNeedChecksum (Entries[Index].Address,
> >&Entries[Index])) {
> >+ Sum += CmosRead8 (Entries[Index].Address);
> >+ }
> >+ }
> >+
> >+ if (Location->Length == 1) {
> >+ return (UINT8) Sum;
> >+ } else {
> >+ return Sum;
> >+ }
> >+}
> >+
> >+/**
> >+ Return the checksum value stored in CMOS.
> >+
> >+ @param [in] Location The CMOS location to store the checksum.
> >+
> >+ @return The checksum value.
> >+**/
> >+UINT16
> >+CmosAccessLibReadChecksum (
> >+ IN CMOS_CHECKSUM_LOCATION_INFO *Location
> >+ )
> >+{
> >+ UINT16 Checksum;
> >+
> >+ Checksum = 0;
> >+
> >+ switch (Location->Length) {
> >+ case 2:
> >+ Checksum = (CmosRead8 (Location->HighByteAddress) << 8);
> >+ //
> >+ // Fall to case 1 to get the low byte value
> >+ //
> >+ case 1:
> >+ Checksum += CmosRead8 (Location->LowByteAddress);
> >+ break;
> >+
> >+ default:
> >+ break;
> >+ }
> >+ return Checksum;
> >+}
> >+
> >+
> >+/**
> >+ Write the Checksum to appropriate address.
> >+
> >+ @param [in] Location The CMOS location to store the checksum.
> >+ @param [in] Checksum The checksum value.
> >+**/
> >+VOID
> >+CmosAccessLibWriteChecksum (
> >+ CMOS_CHECKSUM_LOCATION_INFO *Location,
> >+ IN UINT16 Checksum
> >+ )
> >+{
> >+
> >+ switch (Location->Length) {
> >+ case 0:
> >+ break;
> >+ case 2:
> >+ CmosWrite8 (Location->HighByteAddress, Checksum >> 8);
> >+ //
> >+ // Fall to case 1 to update low byte value
> >+ //
> >+ case 1:
> >+ CmosWrite8 (Location->LowByteAddress, (UINT8) Checksum);
> >+ break;
> >+ }
> >+}
> >+
> >+/**
> >+ Read a byte value from a CMOS address.
> >+
> >+ @param [in] Address Location to read from CMOS
> >+
> >+ @return The byte value read from the CMOS address.
> >+**/
> >+UINT8
> >+EFIAPI
> >+CmosRead8 (
> >+ IN UINT8 Address
> >+ )
> >+{
> >+ if (!CmosAccessLibIsAccessible (Address, CmosAccessLibLocateEntry
> >(Address))) {
> >+ return 0xFF;
> >+ }
> >+
> >+ if (Address <= CMOS_BANK0_LIMIT) {
> >+ if (PlatformCmosGetNmiState ()) {
> >+ Address |= BIT7;
> >+ }
> >+ IoWrite8 (PORT_70, Address);
> >+ return IoRead8 (PORT_71);
> >+ } else {
> >+ IoWrite8 (PORT_72, Address);
> >+ return IoRead8 (PORT_73);
> >+ }
> >+}
> >+
> >+/**
> >+ Write a byte value to a CMOS address.
> >+
> >+ It's an internal function that doesn't update the checksum.
> >+
> >+ @param [in] Address Location to write to CMOS.
> >+ @param [in] Data The byte value write to the CMOS address.
> >+**/
> >+VOID
> >+CmosAccessLibICmosWrite8 (
> >+ IN UINT8 Address,
> >+ IN UINT8 Data
> >+ )
> >+{
> >+ if (Address <= CMOS_BANK0_LIMIT) {
> >+ if (PlatformCmosGetNmiState ()) {
> >+ Address |= BIT7;
> >+ }
> >+ IoWrite8 (PORT_70, Address);
> >+ IoWrite8 (PORT_71, Data);
> >+ } else {
> >+ IoWrite8 (PORT_72, Address);
> >+ IoWrite8 (PORT_73, Data);
> >+ }
> >+}
> >+
> >+/**
> >+ Write a byte value to a CMOS address.
> >+
> >+ @param [in] Address Location to write to CMOS.
> >+ @param [in] Data The byte value write to the CMOS address.
> >+**/
> >+VOID
> >+EFIAPI
> >+CmosWrite8 (
> >+ IN UINT8 Address,
> >+ IN UINT8 Data
> >+ )
> >+{
> >+ UINT8 OriginalData;
> >+ CMOS_ENTRY *Entry;
> >+ CMOS_CHECKSUM_LOCATION_INFO ChecksumLocation;
> >+
> >+ Entry = CmosAccessLibLocateEntry (Address);
> >+
> >+ if (!CmosAccessLibIsAccessible (Address, Entry)) {
> >+ return;
> >+ }
> >+
> >+ OriginalData = CmosRead8 (Address);
> >+
> >+ CmosAccessLibICmosWrite8 (Address, Data);
> >+
> >+ if (CmosAccessLibNeedChecksum (Address, Entry)) {
> >+ //
> >+ // Sum of Data + Checksum = New Sum of Data + New Checksum = 0
> >+ // New Sum of Data - Sum of Data = Checksum - New Checksum
> >+ // New Checksum = Checksum - (New Sum of Data - Sum of Data)
> >+ //
> >+ CmosAccessLibGetChecksumLocation (&ChecksumLocation);
> >+ CmosAccessLibWriteChecksum (
> >+ &ChecksumLocation,
> >+ CmosAccessLibReadChecksum (&ChecksumLocation) - (Data -
> >OriginalData)
> >+ );
> >+ }
> >+}
> >+
> >+/**
> >+ Read a word value from a CMOS address.
> >+
> >+ @param [in] Address Location to read from CMOS
> >+
> >+ @return The word value read from the CMOS address.
> >+**/
> >+UINT16
> >+EFIAPI
> >+CmosRead16 (
> >+ IN UINT8 Address
> >+ )
> >+{
> >+ return CmosRead8 (Address) + (CmosRead8 (Address + 1) << 8); }
> >+
> >+/**
> >+ Write a word value to a CMOS address.
> >+
> >+ @param [in] Address Location to write to CMOS.
> >+ @param [in] Data The word value write to the CMOS address.
> >+**/
> >+VOID
> >+EFIAPI
> >+CmosWrite16 (
> >+ IN UINT8 Address,
> >+ IN UINT16 Data
> >+ )
> >+{
> >+ CmosWrite8 (Address, (UINT8) Data);
> >+ CmosWrite8 (Address + 1, (UINT8) (Data >> 8)); }
> >+
> >+/**
> >+ Read a dword value from a CMOS address.
> >+
> >+ @param [in] Address Location to read from CMOS
> >+
> >+ @return The dword value read from the CMOS address.
> >+**/
> >+UINT32
> >+EFIAPI
> >+CmosRead32 (
> >+ IN UINT8 Address
> >+ )
> >+{
> >+ return CmosRead16 (Address) + (CmosRead16 (Address + 2) << 16); }
> >+
> >+/**
> >+ Write a dword value to a CMOS address.
> >+
> >+ @param [in] Address Location to write to CMOS.
> >+ @param [in] Data The dword value write to the CMOS address.
> >+**/
> >+VOID
> >+EFIAPI
> >+CmosWrite32 (
> >+ IN UINT8 Address,
> >+ IN UINT32 Data
> >+ )
> >+{
> >+ CmosWrite16 (Address, (UINT16) Data);
> >+ CmosWrite16 (Address + 2, (UINT16) (Data >> 16)); }
> >+
> >+
> >+/**
> >+ Initialize the CMOS.
> >+
> >+ It initialize the CMOS area when Force is TRUE or the checksum is
> incorrect.
> >+
> >+ @param[in] Force TRUE indicating initializing the CMOS area
> >+ without
> >checking the checksum.
> >+
> >+ @retval TRUE The CMOS is initialized to default value.
> >+ @retval FALSE The CMOS isn't initialized to default value.
> >+**/
> >+BOOLEAN
> >+EFIAPI
> >+CmosInit (
> >+ IN BOOLEAN Force
> >+ )
> >+{
> >+ UINTN Address;
> >+ CMOS_ENTRY *Entry;
> >+ CMOS_CHECKSUM_LOCATION_INFO ChecksumLocation;
> >+ UINT16 Checksum;
> >+
> >+ CmosAccessLibGetChecksumLocation (&ChecksumLocation);
> >+
> >+ if (!Force) {
> >+ //
> >+ // Initialize the CMOS area when checksum is incorrect.
> >+ //
> >+ Checksum = CmosAccessLibCalculateSum (&ChecksumLocation) +
> >CmosAccessLibReadChecksum (&ChecksumLocation);
> >+ if (ChecksumLocation.Length == 1) {
> >+ Checksum = (UINT8) Checksum;
> >+ }
> >+
> >+ if (Checksum != 0) {
> >+ Force = TRUE;
> >+ }
> >+ }
> >+
> >+ if (Force) {
> >+ //
> >+ // Traverse through entire CMOS location and fill it with zero
> >+ //
> >+ for (Address = 0; Address <= CMOS_BANK1_LIMIT; Address++) {
> >+ Entry = CmosAccessLibLocateEntry ((UINT8) Address);
> >+ if (CmosAccessLibNeedFillDefault ((UINT8) Address, Entry)) {
> >+ CmosAccessLibICmosWrite8 ((UINT8) Address, (Entry == NULL) ?
> >CMOS_DEFAULT_VALUE : Entry->DefaultValue);
> >+ }
> >+ }
> >+
> >+ //
> >+ // Write the New checksum to the Checksum field
> >+ //
> >+ CmosAccessLibWriteChecksum (
> >+ &ChecksumLocation,
> >+ (UINT16) (0x10000 - CmosAccessLibCalculateSum (&ChecksumLocation))
> >+ );
> >+ return TRUE;
> >+ }
> >+
> >+ return FALSE;
> >+}
> >diff --git
> >a/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/Cmos
> A
> >ccessLib.inf
> >b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/Cmo
> sA
> >ccessLib.inf
> >new file mode 100644
> >index 0000000..9decaf4
> >--- /dev/null
> >+++
> >b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/Cmo
> sA
> >ccessLib.inf
> >@@ -0,0 +1,34 @@
> >+### @file
> >+# Library producing CMOS access functionality.
> >+#
> >+# Copyright (c) 2019, Intel Corporation. All rights reserved.<BR> # #
> >+This program and the accompanying materials are licensed and made
> >available under
> >+# the terms and conditions of the BSD License which accompanies this
> >distribution.
> >+# The full text of the license may be found at #
> >+http://opensource.org/licenses/bsd-license.php
> >+#
> >+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> >BASIS,
> >+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> >EXPRESS OR IMPLIED.
> >+#
> >+###
> >+[Defines]
> >+ INF_VERSION = 0x00010005
> >+ BASE_NAME = CmosAccessLib
> >+ FILE_GUID = FF6B645D-C001-4ACE-9CA1-199F97C2D601
> >+ VERSION_STRING = 1.0
> >+ MODULE_TYPE = BASE
> >+ LIBRARY_CLASS = CmosAccessLib
> >+
> >+[Sources]
> >+ CmosAccessLib.c
> >+ CmosAccessLibInternal.h
> >+
> >+[LibraryClasses]
> >+ IoLib
> >+ DebugLib
> >+ PlatformCmosAccessLib
> >+
> >+[Packages]
> >+ MdePkg/MdePkg.dec
> >+ AdvancedFeaturePkg/AdvancedFeaturePkg.dec
> >\ No newline at end of file
> >diff --git
> >a/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/Cmos
> A
> >ccessLibInternal.h
> >b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/Cmo
> sA
> >ccessLibInternal.h
> >new file mode 100644
> >index 0000000..9b6d086
> >--- /dev/null
> >+++
> >b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/CmosAccessLib/Cmo
> sA
> >ccessLibInternal.h
> >@@ -0,0 +1,41 @@
> >+/** @file
> >+ CmosAccessLib internal header file.
> >+
> >+Copyright (c) 2019, Intel Corporation. All rights reserved.<BR> This
> >+program and the accompanying materials are licensed and made
> >available under
> >+the terms and conditions of the BSD License that accompanies this
> >distribution.
> >+The full text of the license may be found at
> >+http://opensource.org/licenses/bsd-license.php.
> >+
> >+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> >BASIS,
> >+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> >EXPRESS OR IMPLIED.
> >+
> >+**/
> >+
> >+#ifndef _CMOS_ACCESS_LIB_INTERNALS_
> >+#define _CMOS_ACCESS_LIB_INTERNALS_
> >+
> >+#include <Base.h>
> >+#include <Uefi.h>
> >+#include <Library/IoLib.h>
> >+#include <Library/DebugLib.h>
> >+#include <Library/CmosAccessLib.h>
> >+#include <Library/PlatformCmosAccessLib.h>
> >+
> >+// CMOS access Port address
> >+
> >+#define PORT_70 0x70
> >+#define PORT_71 0x71
> >+#define PORT_72 0x72
> >+#define PORT_73 0x73
> >+
> >+#define CMOS_BANK0_LIMIT 0x7F
> >+#define CMOS_BANK1_LIMIT 0xFF
> >+
> >+typedef struct {
> >+ UINT8 Length;
> >+ UINT8 LowByteAddress;
> >+ UINT8 HighByteAddress;
> >+} CMOS_CHECKSUM_LOCATION_INFO;
> >+
> >+#endif // _CMOS_ACCESS_LIB_INTERNALS_
> >diff --git
> >a/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccess
> Lib
> >Null/PlatformCmosAccessLibNull.c
> >b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccess
> Lib
> >Null/PlatformCmosAccessLibNull.c
> >new file mode 100644
> >index 0000000..b24a3f5
> >--- /dev/null
> >+++
> >b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccess
> Lib
> >Null/PlatformCmosAccessLibNull.c
> >@@ -0,0 +1,45 @@
> >+/** @file
> >+ Platform CMOS Access Library.
> >+
> >+Copyright (c) 2019, Intel Corporation. All rights reserved.<BR> This
> >+program and the accompanying materials are licensed and made
> >available under
> >+the terms and conditions of the BSD License that accompanies this
> >distribution.
> >+The full text of the license may be found at
> >+http://opensource.org/licenses/bsd-license.php.
> >+
> >+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> >BASIS,
> >+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> >EXPRESS OR IMPLIED.
> >+
> >+**/
> >+
> >+#include <Base.h>
> >+#include <Library/PlatformCmosAccessLib.h>
> >+
> >+/**
> >+ Return the platform CMOS entries.
> >+
> >+ @param [out] EntryCount Return the count of platform CMOS entries.
> >+
> >+ @return Platform CMOS entries.
> >+**/
> >+CMOS_ENTRY *
> >+EFIAPI
> >+PlatformCmosGetEntry (
> >+ OUT UINTN *EntryCount
> >+ )
> >+{
> >+ *EntryCount = 0;
> >+ return NULL;
> >+}
> >+
> >+/**
> >+ Return the NMI enable status.
> >+**/
> >+BOOLEAN
> >+EFIAPI
> >+PlatformCmosGetNmiState (
> >+ VOID
> >+ )
> >+{
> >+ return FALSE;
> >+}
> >diff --git
> >a/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccess
> Lib
> >Null/PlatformCmosAccessLibNull.inf
> >b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccess
> Lib
> >Null/PlatformCmosAccessLibNull.inf
> >new file mode 100644
> >index 0000000..4816464
> >--- /dev/null
> >+++
> >b/Platform/Intel/AdvancedFeaturePkg/Cmos/Library/PlatformCmosAccess
> Lib
> >Null/PlatformCmosAccessLibNull.inf
> >@@ -0,0 +1,30 @@
> >+### @file
> >+# Library producing CMOS access functionalities are relevant to platform.
> >+#
> >+# Copyright (c) 2019, Intel Corporation. All rights reserved.<BR> # #
> >+This program and the accompanying materials are licensed and made
> >available under
> >+# the terms and conditions of the BSD License which accompanies this
> >distribution.
> >+# The full text of the license may be found at #
> >+http://opensource.org/licenses/bsd-license.php
> >+#
> >+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> >BASIS,
> >+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> >EXPRESS OR IMPLIED.
> >+#
> >+###
> >+
> >+[Defines]
> >+ INF_VERSION = 0x00010005
> >+ BASE_NAME = PlatformCmosAccessLib
> >+ FILE_GUID = C315A8B6-FF6C-41D1-A934-7330501F308C
> >+ VERSION_STRING = 1.0
> >+ MODULE_TYPE = BASE
> >+ LIBRARY_CLASS = PlatformCmosAccessLib
> >+
> >+
> >+[Sources]
> >+ PlatformCmosAccessLibNull.c
> >+
> >+[Packages]
> >+ MdePkg/MdePkg.dec
> >+ AdvancedFeaturePkg/AdvancedFeaturePkg.dec
> >\ No newline at end of file
> >--
> >2.21.0.windows.1
> >
> >
> >
^ permalink raw reply [flat|nested] 3+ messages in thread
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2019-05-07 7:27 [Patch] AdvancedFeaturePkg/Cmos: Add Cmos related libraries Dong, Eric
2019-05-07 7:31 ` [edk2-devel] " Liming Gao
2019-05-07 7:36 ` Dong, Eric
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