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| author | Guo Dong <guo.dong@intel.com> | 2021-09-22 14:42:50 -0700 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2021-10-25 17:28:21 +0000 |
| commit | ae8acce8ae515545f6b206561e0ebf2a66a1d8f6 (patch) | |
| tree | afdef6afdc281915e22b505e7e24827053e269f3 /UefiPayloadPkg/FvbRuntimeDxe/FvbInfo.c | |
| parent | 04714cef461cf9a8924839682292b0df9789b42d (diff) | |
| download | edk2-ae8acce8ae515545f6b206561e0ebf2a66a1d8f6.tar.gz edk2-ae8acce8ae515545f6b206561e0ebf2a66a1d8f6.tar.bz2 edk2-ae8acce8ae515545f6b206561e0ebf2a66a1d8f6.zip | |
UefiPayloadPkg: Add a common FVB SMM module
This FVB module is used to initialize NV variable region
and provide SMM FVB protocol to read/write SPI variable region.
This module consume HOB gNvVariableInfoGuid and depends on
FlashDeviceLib for the actual SPI device operate.
During FVB initialization, it will initialize the variable region
if the variable region is not valid. And it support to write initial
variable data from FFS file if it is found.
Signed-off-by: Guo Dong <guo.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Maurice Ma <maurice.ma@intel.com>
Cc: Benjamin You <benjamin.you@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Benjamin You <benjamin.you@intel.com>
Diffstat (limited to 'UefiPayloadPkg/FvbRuntimeDxe/FvbInfo.c')
| -rw-r--r-- | UefiPayloadPkg/FvbRuntimeDxe/FvbInfo.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/UefiPayloadPkg/FvbRuntimeDxe/FvbInfo.c b/UefiPayloadPkg/FvbRuntimeDxe/FvbInfo.c new file mode 100644 index 0000000000..78b6b81f66 --- /dev/null +++ b/UefiPayloadPkg/FvbRuntimeDxe/FvbInfo.c @@ -0,0 +1,151 @@ +/** @file
+
+ Copyright (c) 2014 - 2021, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <PiDxe.h>
+#include <Protocol/FirmwareVolumeBlock.h>
+#include <Library/PcdLib.h>
+#include <Library/DebugLib.h>
+#include <Library/BaseLib.h>
+#include <Guid/FirmwareFileSystem2.h>
+#include <Guid/SystemNvDataGuid.h>
+#include <Guid/NvVariableInfoGuid.h>
+#include <Library/HobLib.h>
+
+#define FVB_MEDIA_BLOCK_SIZE 0x1000
+
+typedef struct {
+ EFI_FIRMWARE_VOLUME_HEADER FvInfo;
+ EFI_FV_BLOCK_MAP_ENTRY End[1];
+} EFI_FVB2_MEDIA_INFO;
+
+//
+// This data structure contains a template of FV header which is used to restore
+// Fv header if it's corrupted.
+//
+EFI_FVB2_MEDIA_INFO mFvbMediaInfo = {
+ {
+ {0,}, // ZeroVector[16]
+ EFI_SYSTEM_NV_DATA_FV_GUID,
+ 0,
+ EFI_FVH_SIGNATURE,
+ 0x0004feff, // check PiFirmwareVolume.h for details on EFI_FVB_ATTRIBUTES_2
+ sizeof (EFI_FIRMWARE_VOLUME_HEADER) + sizeof (EFI_FV_BLOCK_MAP_ENTRY),
+ 0, // CheckSum which will be calucated dynamically.
+ 0, // ExtHeaderOffset
+ {0,},
+ EFI_FVH_REVISION,
+ {
+ {
+ 0,
+ FVB_MEDIA_BLOCK_SIZE,
+ }
+ }
+ },
+ {
+ {
+ 0,
+ 0
+ }
+ }
+};
+
+/**
+ Initialize the variable store
+
+ @retval EFI_SUCCESS if initialize the store success.
+
+**/
+EFI_STATUS
+InitVariableStore (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ UINT32 NvStorageBase;
+ UINT32 NvStorageSize;
+ UINT32 NvVariableSize;
+ UINT32 FtwWorkingSize;
+ UINT32 FtwSpareSize;
+ EFI_HOB_GUID_TYPE *GuidHob;
+ NV_VARIABLE_INFO *NvVariableInfo;
+
+ //
+ // Find SPI flash variable hob
+ //
+ GuidHob = GetFirstGuidHob (&gNvVariableInfoGuid);
+ if (GuidHob == NULL) {
+ ASSERT (FALSE);
+ return EFI_NOT_FOUND;
+ }
+ NvVariableInfo = (NV_VARIABLE_INFO *) GET_GUID_HOB_DATA (GuidHob);
+
+ //
+ // Get variable region base and size.
+ //
+ NvStorageSize = NvVariableInfo->VariableStoreSize;
+ NvStorageBase = NvVariableInfo->VariableStoreBase;
+
+ //
+ // NvStorageBase needs to be 4KB aligned, NvStorageSize needs to be 8KB * n
+ //
+ if (((NvStorageBase & (SIZE_4KB - 1)) != 0) || ((NvStorageSize & (SIZE_8KB - 1)) != 0)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ FtwSpareSize = NvStorageSize / 2;
+ FtwWorkingSize = 0x2000;
+ NvVariableSize = NvStorageSize / 2 - FtwWorkingSize;
+ DEBUG ((DEBUG_INFO, "NvStorageBase:0x%x, NvStorageSize:0x%x\n", NvStorageBase, NvStorageSize));
+
+ if (NvVariableSize >= 0x80000000) {
+ return EFI_INVALID_PARAMETER;
+ }
+ Status = PcdSet32S(PcdFlashNvStorageVariableSize, NvVariableSize);
+ ASSERT_EFI_ERROR (Status);
+ Status = PcdSet32S(PcdFlashNvStorageVariableBase, NvStorageBase);
+ ASSERT_EFI_ERROR (Status);
+ Status = PcdSet64S(PcdFlashNvStorageVariableBase64, NvStorageBase);
+ ASSERT_EFI_ERROR (Status);
+
+ Status = PcdSet32S(PcdFlashNvStorageFtwWorkingSize, FtwWorkingSize);
+ ASSERT_EFI_ERROR (Status);
+ Status = PcdSet32S(PcdFlashNvStorageFtwWorkingBase, NvStorageBase + NvVariableSize);
+ ASSERT_EFI_ERROR (Status);
+
+ Status = PcdSet32S(PcdFlashNvStorageFtwSpareSize, FtwSpareSize);
+ ASSERT_EFI_ERROR (Status);
+ Status = PcdSet32S(PcdFlashNvStorageFtwSpareBase, NvStorageBase + FtwSpareSize);
+ ASSERT_EFI_ERROR (Status);
+
+ return EFI_SUCCESS;
+}
+
+
+/**
+ Get a heathy FV header used for variable store recovery
+
+ @retval The FV header.
+
+**/
+EFI_FIRMWARE_VOLUME_HEADER *
+GetFvHeaderTemplate (
+ VOID
+ )
+{
+ EFI_FIRMWARE_VOLUME_HEADER *FvHeader;
+ UINTN FvSize;
+
+ FvSize = PcdGet32(PcdFlashNvStorageFtwSpareSize) * 2;
+ FvHeader = &mFvbMediaInfo.FvInfo;
+ FvHeader->FvLength = FvSize;
+ FvHeader->BlockMap[0].NumBlocks = (UINT32) (FvSize / FvHeader->BlockMap[0].Length);
+ FvHeader->Checksum = 0;
+ FvHeader->Checksum = CalculateCheckSum16 ((UINT16 *) FvHeader, FvHeader->HeaderLength);
+
+ return FvHeader;
+}
+
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