MdeModulePkg/Variable: Consume Variable Flash Info
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>
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mergify[bot]
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60b519456c
commit
4dbebc2d10
@@ -423,6 +423,8 @@ FtwNotificationEvent (
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EFI_PHYSICAL_ADDRESS VariableStoreBase;
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UINT64 VariableStoreLength;
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UINTN FtwMaxBlockSize;
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UINT32 NvStorageVariableSize;
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UINT64 NvStorageVariableSize64;
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//
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// Ensure FTW protocol is installed.
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@@ -432,14 +434,20 @@ FtwNotificationEvent (
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return;
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}
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Status = GetVariableFlashNvStorageInfo (&NvStorageVariableBase, &NvStorageVariableSize64);
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ASSERT_EFI_ERROR (Status);
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Status = SafeUint64ToUint32 (NvStorageVariableSize64, &NvStorageVariableSize);
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// This driver currently assumes the size will be UINT32 so assert the value is safe for now.
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ASSERT_EFI_ERROR (Status);
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VariableStoreBase = NvStorageVariableBase + mNvFvHeaderCache->HeaderLength;
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Status = FtwProtocol->GetMaxBlockSize (FtwProtocol, &FtwMaxBlockSize);
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if (!EFI_ERROR (Status)) {
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ASSERT (PcdGet32 (PcdFlashNvStorageVariableSize) <= FtwMaxBlockSize);
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ASSERT (NvStorageVariableSize <= FtwMaxBlockSize);
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}
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NvStorageVariableBase = NV_STORAGE_VARIABLE_BASE;
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VariableStoreBase = NvStorageVariableBase + mNvFvHeaderCache->HeaderLength;
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//
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// Let NonVolatileVariableBase point to flash variable store base directly after FTW ready.
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//
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