Sorry for a question. I referred the code in InitFtwDevice(): FtwDevice->WorkSpaceAddress = (EFI_PHYSICAL_ADDRESS)PcdGet64 (PcdFlashNvStorageFtwWorkingBase64); if (FtwDevice->WorkSpaceAddress == 0) { FtwDevice->WorkSpaceAddress = (EFI_PHYSICAL_ADDRESS)PcdGet32 (PcdFlashNvStorageFtwWorkingBase); } and the PCD definition in MdeModulePkg.dec: ## Base address of the FTW working block range in flash device. # If PcdFlashNvStorageFtwWorkingSize is larger than one block size, this value should be block size aligned. # @Prompt Base address of flash FTW working block range. gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingBase|0x0|UINT32|0x30000010 ## 64-bit Base address of the FTW working block range in flash device. # If PcdFlashNvStorageFtwWorkingSize is larger than one block size, this value should be block size aligned. # @Prompt 64-bit Base address of flash FTW working block range. gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingBase64|0x0|UINT64|0x80000010 The description of both PCDs mentioned a block size alignment requirement. Does the change in this patch conflict with the above PCD description? (SpareAreaAddress is having a similar case.) Best Regards, Hao Wu From: Sean Rhodes Sent: Monday, May 16, 2022 1:41 PM To: devel@edk2.groups.io; Rhodes, Sean Cc: Wang, Jian J ; Wu, Hao A ; Gao, Liming Subject: Re: [edk2-devel] [PATCH] MdeModulePkg/FaultTolerantWriteDxe: Don't check for address alignment Hi Would any one be able to review please? Thank you On Fri, 1 Apr 2022, 09:03 Sean Rhodes via groups.io, > wrote: WorkSpaceAddress and SpareAreaAddress point into MMIO, which isn't always aligned. Remove the check for block alignment to avoid false assertions. Cc: Jian J Wang > Cc: Hao A Wu > Cc: Liming Gao > Signed-off-by: Sean Rhodes > Change-Id: Ia1c1f44b6a0e7f32cac0d7806e74d729e5d83a6d --- .../Universal/FaultTolerantWriteDxe/FtwMisc.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/MdeModulePkg/Universal/FaultTolerantWriteDxe/FtwMisc.c b/MdeModulePkg/Universal/FaultTolerantWriteDxe/FtwMisc.c index 661e148767..3b9ff1c828 100644 --- a/MdeModulePkg/Universal/FaultTolerantWriteDxe/FtwMisc.c +++ b/MdeModulePkg/Universal/FaultTolerantWriteDxe/FtwMisc.c @@ -1121,12 +1121,10 @@ FindFvbForFtw ( FtwDevice->NumberOfWorkSpaceBlock = FTW_BLOCKS (FtwDevice->FtwWorkSpaceBase + FtwDevice->FtwWorkSpaceSize, FtwDevice->WorkBlockSize); if (FtwDevice->FtwWorkSpaceSize >= FtwDevice->WorkBlockSize) { // - // Check the alignment of work space address and length, they should be block size aligned when work space size is larger than one block size. + // Check the alignment of work space length, it should be block size aligned when work space size is larger than one block size. // - if (((FtwDevice->WorkSpaceAddress & (FtwDevice->WorkBlockSize - 1)) != 0) || - ((FtwDevice->WorkSpaceLength & (FtwDevice->WorkBlockSize - 1)) != 0)) - { - DEBUG ((DEBUG_ERROR, "Ftw: Work space address or length is not block size aligned when work space size is larger than one block size\n")); + if ((FtwDevice->WorkSpaceLength & (FtwDevice->WorkBlockSize - 1)) != 0) { + DEBUG ((EFI_D_ERROR, "Ftw: Work space length is not block size aligned when work space size is larger than one block size\n")); FreePool (HandleBuffer); ASSERT (FALSE); return EFI_ABORTED; @@ -1171,12 +1169,10 @@ FindFvbForFtw ( } // - // Check the alignment of spare area address and length, they should be block size aligned + // Check the alignment of spare area length, it should be block size aligned // - if (((FtwDevice->SpareAreaAddress & (FtwDevice->SpareBlockSize - 1)) != 0) || - ((FtwDevice->SpareAreaLength & (FtwDevice->SpareBlockSize - 1)) != 0)) - { - DEBUG ((DEBUG_ERROR, "Ftw: Spare area address or length is not block size aligned\n")); + if ((FtwDevice->SpareAreaLength & (FtwDevice->SpareBlockSize - 1)) != 0) { + DEBUG ((EFI_D_ERROR, "Ftw: Spare area address or length is not block size aligned\n")); FreePool (HandleBuffer); // // Report Status Code EFI_SW_EC_ABORTED. -- 2.32.0 ------------ Groups.io Links: You receive all messages sent to this group. View/Reply Online (#88320): https://edk2.groups.io/g/devel/message/88320 Mute This Topic: https://groups.io/mt/90173290/6718866 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [sean@starlabs.systems] ------------