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MdeModulePkg/Variable: Consume Variable Flash Info

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REF:https://bugzilla.tianocore.org/show_bug.cgi?id=3479

Updates VariableRuntimeDxe, VariableSmm, and VariableStandaloneMm
to acquire variable flash information from the Variable Flash
Information library.

Note: This introduces a dependency on VariableFlashInfoLib in these
modules. Therefore, a platform building the variable modules must
specify an instance of VariableFlashInfoLib in their platform build.

Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
This commit is contained in:
Michael Kubacki
2022-04-05 21:34:51 -04:00
committed by mergify[bot]
parent 60b519456c
commit 4dbebc2d10
10 changed files with 56 additions and 34 deletions
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14
MdeModulePkg/Universal/Variable/RuntimeDxe/VariableNonVolatile.c
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@ -142,6 +142,7 @@ InitRealNonVolatileVariableStore (
EFI_PHYSICAL_ADDRESS NvStorageBase;
UINT8 *NvStorageData;
UINT32 NvStorageSize;
UINT64 NvStorageSize64;
FAULT_TOLERANT_WRITE_LAST_WRITE_DATA *FtwLastWriteData;
UINT32 BackUpOffset;
UINT32 BackUpSize;
@ -153,19 +154,24 @@ InitRealNonVolatileVariableStore (
mVariableModuleGlobal->FvbInstance = NULL;
Status = GetVariableFlashNvStorageInfo (&NvStorageBase, &NvStorageSize64);
ASSERT_EFI_ERROR (Status);
Status = SafeUint64ToUint32 (NvStorageSize64, &NvStorageSize);
// This driver currently assumes the size will be UINT32 so assert the value is safe for now.
ASSERT_EFI_ERROR (Status);
ASSERT (NvStorageBase != 0);
//
// Allocate runtime memory used for a memory copy of the FLASH region.
// Keep the memory and the FLASH in sync as updates occur.
//
NvStorageSize = PcdGet32 (PcdFlashNvStorageVariableSize);
NvStorageData = AllocateRuntimeZeroPool (NvStorageSize);
if (NvStorageData == NULL) {
return EFI_OUT_OF_RESOURCES;
}
NvStorageBase = NV_STORAGE_VARIABLE_BASE;
ASSERT (NvStorageBase != 0);
//
// Copy NV storage data to the memory buffer.
//