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From 70e79ba5300f01a13422452c29e26c69042a0c8c Mon Sep 17 00:00:00 2001
From: sahil <sahil@arm.com>
Date: Mon, 2 May 2022 18:50:08 +0530
Subject: [PATCH] Platform/ARM/N1Sdp: NOR flash library for N1Sdp
Add NOR flash library, this library provides APIs for getting the list
of NOR flash devices on the platform.
Upstream-Status: Pending
Signed-off-by: Xueliang Zhong <xueliang.zhong@arm.com>
Signed-off-by: sahil <sahil@arm.com>
Change-Id: I39ad4143b7fad7e33b3b151a019a74f23e0ed441
---
.../Library/NorFlashLib/NorFlashLib.c | 52 +++++++++++++++++++
.../Library/NorFlashLib/NorFlashLib.inf | 36 +++++++++++++
2 files changed, 88 insertions(+)
create mode 100644 Silicon/ARM/NeoverseN1Soc/Library/NorFlashLib/NorFlashLib.c
create mode 100644 Silicon/ARM/NeoverseN1Soc/Library/NorFlashLib/NorFlashLib.inf
diff --git a/Silicon/ARM/NeoverseN1Soc/Library/NorFlashLib/NorFlashLib.c b/Silicon/ARM/NeoverseN1Soc/Library/NorFlashLib/NorFlashLib.c
new file mode 100644
index 00000000..eee3d1c6
--- /dev/null
+++ b/Silicon/ARM/NeoverseN1Soc/Library/NorFlashLib/NorFlashLib.c
@@ -0,0 +1,52 @@
+/** @file
+ NOR flash lib for N1Sdp
+
+ Copyright (c) 2023, ARM Limited. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Library/DebugLib.h>
+#include <Library/IoLib.h>
+#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
+ },
+};
+
+/**
+ Get NOR flash region info
+
+ @param[out] NorFlashDevices NOR flash regions info.
+ @param[out] Count number of flash instance.
+
+ @retval EFI_SUCCESS Success.
+**/
+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;
+}
diff --git a/Silicon/ARM/NeoverseN1Soc/Library/NorFlashLib/NorFlashLib.inf b/Silicon/ARM/NeoverseN1Soc/Library/NorFlashLib/NorFlashLib.inf
new file mode 100644
index 00000000..784856c8
--- /dev/null
+++ b/Silicon/ARM/NeoverseN1Soc/Library/NorFlashLib/NorFlashLib.inf
@@ -0,0 +1,36 @@
+## @file
+# NOR flash lib for N1Sdp
+#
+# Copyright (c) 2023, ARM Limited. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+ INF_VERSION = 0x0001001B
+ BASE_NAME = NorFlashN1SdpLib
+ 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
+ DebugLib
+ IoLib
+
+[FixedPcd]
+ gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareSize
+ gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingSize
+ gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase
+ gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableSize
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