Re: [edk2-devel] [PATCH RESEND edk2-platforms][PATCH V2 11/14] Silicon/ARM/NeoverseN1Soc: NOR flash library for N1Sdp

["levi.yun" <yeoreum.yun@arm.com>]

Reviewed-by: levi.yun <yeoreum.yun@arm.com>

________________________________________
From: devel@edk2.groups.io <devel@edk2.groups.io> on behalf of Sahil Kaushal via groups.io <sahil.kaushal=arm.com@groups.io>
Sent: 23 April 2024 06:56
To: devel@edk2.groups.io
Cc: Ard Biesheuvel; Leif Lindholm  ; Sami Mujawar; Sahil Kaushal
Subject: [edk2-devel] [PATCH RESEND edk2-platforms][PATCH V2 11/14] Silicon/ARM/NeoverseN1Soc: NOR flash library for N1Sdp

From: sahil <sahil@arm.com>

Add NOR flash library, this library provides APIs for getting the list
of NOR flash devices on the platform.

Signed-off-by: sahil <sahil@arm.com>
---
 Silicon/ARM/NeoverseN1Soc/Library/NorFlashLib/NorFlashLib.inf | 34 ++++++++++
 Silicon/ARM/NeoverseN1Soc/Library/NorFlashLib/NorFlashLib.c   | 65 ++++++++++++++++++++
 2 files changed, 99 insertions(+)

diff --git a/Silicon/ARM/NeoverseN1Soc/Library/NorFlashLib/NorFlashLib.inf b/Silicon/ARM/NeoverseN1Soc/Library/NorFlashLib/NorFlashLib.inf
new file mode 100644
index 000000000000..fad3bca79d3a
--- /dev/null
+++ b/Silicon/ARM/NeoverseN1Soc/Library/NorFlashLib/NorFlashLib.inf
@@ -0,0 +1,34 @@
+## @file

+#  NOR flash lib for ARM Neoverse N1 platform.

+#

+#  Copyright (c) 2024, ARM Limited. All rights reserved.<BR>

+#

+#  SPDX-License-Identifier: BSD-2-Clause-Patent

+#

+##

+

+[Defines]

+  INF_VERSION                    = 0x0001001B

+  BASE_NAME                      = NorFlashNeoverseN1SocLib

+  FILE_GUID                      = 7006fcf1-a585-4272-92e3-b286b1dff5bb

+  MODULE_TYPE                    = DXE_DRIVER

+  VERSION_STRING                 = 1.0

+  LIBRARY_CLASS                  = NorFlashPlatformLib

+

+[Sources.common]

+  NorFlashLib.c

+

+[Packages]

+  MdeModulePkg/MdeModulePkg.dec

+  MdePkg/MdePkg.dec

+  Platform/ARM/ARM.dec

+  Silicon/ARM/NeoverseN1Soc/NeoverseN1Soc.dec

+

+[LibraryClasses]

+  BaseLib

+

+[FixedPcd]

+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareSize

+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingSize

+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase

+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableSize

diff --git a/Silicon/ARM/NeoverseN1Soc/Library/NorFlashLib/NorFlashLib.c b/Silicon/ARM/NeoverseN1Soc/Library/NorFlashLib/NorFlashLib.c
new file mode 100644
index 000000000000..a48db9c74548
--- /dev/null
+++ b/Silicon/ARM/NeoverseN1Soc/Library/NorFlashLib/NorFlashLib.c
@@ -0,0 +1,65 @@
+/** @file

+*  NOR flash lib for ARM Neoverse N1 platform

+*

+*  Copyright (c) 2024, ARM Limited. All rights reserved.<BR>

+*

+*  SPDX-License-Identifier: BSD-2-Clause-Patent

+*

+**/

+

+#include <Library/NorFlashPlatformLib.h>

+#include <NeoverseN1Soc.h>

+#include <PiDxe.h>

+

+#define FW_ENV_REGION_BASE  FixedPcdGet32 (PcdFlashNvStorageVariableBase)

+#define FW_ENV_REGION_SIZE  (FixedPcdGet32 (PcdFlashNvStorageVariableSize) + \

+                            FixedPcdGet32 (PcdFlashNvStorageFtwWorkingSize) + \

+                            FixedPcdGet32 (PcdFlashNvStorageFtwSpareSize))

+

+STATIC NOR_FLASH_DESCRIPTION  mNorFlashDevices[] = {

+  {

+    /// Environment variable region

+    NEOVERSEN1SOC_SCP_QSPI_AHB_BASE,                    ///< device base

+    FW_ENV_REGION_BASE,                                 ///< region base

+    FW_ENV_REGION_SIZE,                                 ///< region size

+    SIZE_4KB,                                           ///< block size

+  },

+};

+

+/**

+  Dummy implementation of NorFlashPlatformInitialization to

+  comply with NorFlashPlatformLib structure.

+

+  @retval        EFI_SUCCESS        Success.

+**/

+EFI_STATUS

+NorFlashPlatformInitialization (

+  VOID

+  )

+{

+  return EFI_SUCCESS;

+}

+

+/**

+  Get NOR flash region info

+

+  @param[out]    NorFlashDevices        NOR flash regions info.

+  @param[out]    Count                  number of flash instance.

+

+  @retval        EFI_SUCCESS            Success.

+  @retval        EFI_INVALID_PARAMETER  The parameters specified are not valid.

+**/

+EFI_STATUS

+NorFlashPlatformGetDevices (

+  OUT NOR_FLASH_DESCRIPTION  **NorFlashDevices,

+  OUT UINT32                 *Count

+  )

+{

+  if ((NorFlashDevices == NULL) || (Count == NULL)) {

+    return EFI_INVALID_PARAMETER;

+  }

+

+  *NorFlashDevices = mNorFlashDevices;

+  *Count           = ARRAY_SIZE (mNorFlashDevices);

+  return EFI_SUCCESS;

+}

--
2.25.1



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