The size of array BlockMap is 1 in struct FirmwareVolumeHeader, but in function InitializeFvAndVariableStoreHeaders, BlockMap[1] is been written. The memory of BlockMap[1] is already allocated, so the code is OK. But it is better to use a new point to assign this memory.
Cc: Leif Lindholm <quic_llind...@quicinc.com> Cc: Ard Biesheuvel <ardb+tianoc...@kernel.org> Signed-off-by: Wenyi Xie <xiewen...@huawei.com> --- ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashFvb.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashFvb.c b/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashFvb.c index 0767581308d2..2130e2e76344 100644 --- a/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashFvb.c +++ b/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashFvb.c @@ -47,6 +47,7 @@ InitializeFvAndVariableStoreHeaders ( VOID *Headers; UINTN HeadersLength; EFI_FIRMWARE_VOLUME_HEADER *FirmwareVolumeHeader; + EFI_FV_BLOCK_MAP_ENTRY *BlockMapEntry; VARIABLE_STORE_HEADER *VariableStoreHeader; UINT32 NvStorageFtwSpareSize; UINT32 NvStorageFtwWorkingSize; @@ -151,10 +152,15 @@ InitializeFvAndVariableStoreHeaders ( FirmwareVolumeHeader->Revision = EFI_FVH_REVISION; FirmwareVolumeHeader->BlockMap[0].NumBlocks = Instance->Media.LastBlock + 1; FirmwareVolumeHeader->BlockMap[0].Length = Instance->Media.BlockSize; - FirmwareVolumeHeader->BlockMap[1].NumBlocks = 0; - FirmwareVolumeHeader->BlockMap[1].Length = 0; FirmwareVolumeHeader->Checksum = CalculateCheckSum16 ((UINT16 *)FirmwareVolumeHeader, FirmwareVolumeHeader->HeaderLength); + // + // EFI_FV_BLOCK_MAP_ENTRY + // + BlockMapEntry = (EFI_FV_BLOCK_MAP_ENTRY *)((UINTN)Headers + sizeof (EFI_FIRMWARE_VOLUME_HEADER)); + BlockMapEntry->NumBlocks = 0; + BlockMapEntry->Length = 0; + // // VARIABLE_STORE_HEADER // -- 2.20.1.windows.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#95718): https://edk2.groups.io/g/devel/message/95718 Mute This Topic: https://groups.io/mt/94644092/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
