From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received-SPF: Pass (sender SPF authorized) identity=mailfrom; client-ip=217.140.101.70; helo=foss.arm.com; envelope-from=jagadeesh.ujja@arm.com; receiver=edk2-devel@lists.01.org Received: from foss.arm.com (foss.arm.com [217.140.101.70]) by ml01.01.org (Postfix) with ESMTP id 84CCC21962301 for ; Wed, 2 Jan 2019 05:14:15 -0800 (PST) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5C7AE80D; Wed, 2 Jan 2019 05:14:15 -0800 (PST) Received: from usa.arm.com (a075555-lin.blr.arm.com [10.162.2.152]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id C8AD73F5CF; Wed, 2 Jan 2019 05:14:12 -0800 (PST) From: Jagadeesh Ujja To: edk2-devel@lists.01.org, liming.gao@intel.com, chao.b.zhang@intel.com, leif.lindholm@linaro.org, ard.biesheuvel@linaro.org, Achin.Gupta@arm.com, Supreeth.Venkatesh@arm.com, jian.j.wang@intel.com Date: Wed, 2 Jan 2019 18:43:42 +0530 Message-Id: <1546434828-24405-6-git-send-email-jagadeesh.ujja@arm.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1546434828-24405-1-git-send-email-jagadeesh.ujja@arm.com> References: <1546434828-24405-1-git-send-email-jagadeesh.ujja@arm.com> Subject: [PATCH v2 05/11] MdeModulePkg/FaultTolerantWriteDxe: allow reusability as a MM driver X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 X-List-Received-Date: Wed, 02 Jan 2019 13:14:15 -0000 Adapt the FaultTolerantWriteDxe driver to be used as a MM_STANDALONE driver to provide UEFI fault tolerant write protocol functionality for variable reclaim operation on EFI variables stored on a NOR flash that is only accessible to code executing in MM Standalone mode. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Jagadeesh Ujja --- MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteDxe.inf | 1 + MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteSmm.c | 203 +++++++++++++++----- MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteStandaloneMm.inf | 101 ++++++++++ MdeModulePkg/Universal/FaultTolerantWriteDxe/UpdateWorkingBlock.c | 27 +-- 4 files changed, 271 insertions(+), 61 deletions(-) diff --git a/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteDxe.inf b/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteDxe.inf index dcde58d..026bc60 100644 --- a/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteDxe.inf +++ b/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteDxe.inf @@ -77,6 +77,7 @@ gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareBase ## SOMETIMES_CONSUMES gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareBase64 ## CONSUMES gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareSize ## CONSUMES + gEfiMdeModulePkgTokenSpaceGuid.PcdStandaloneMmVariableEnabled # # gBS->CalculateCrc32() is consumed in EntryPoint. diff --git a/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteSmm.c b/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteSmm.c index 481fea3..33f99e6 100644 --- a/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteSmm.c +++ b/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteSmm.c @@ -44,6 +44,7 @@ This driver need to make sure the CommBuffer is not in the SMRAM range. Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.
+Copyright (c) 2018, ARM Limited. All rights reserved.
This program and the accompanying materials are licensed and made available under the terms and conditions of the BSD License which accompanies this distribution. The full text of the license may be found at @@ -55,13 +56,16 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. **/ #include +#include #include #include +#include #include #include #include "FaultTolerantWrite.h" #include "FaultTolerantWriteSmmCommon.h" #include +#include EFI_EVENT mFvbRegistration = NULL; EFI_FTW_DEVICE *mFtwDevice = NULL; @@ -92,11 +96,19 @@ FtwGetFvbByHandle ( // // To get the SMM FVB protocol interface on the handle // - return gSmst->SmmHandleProtocol ( - FvBlockHandle, - &gEfiSmmFirmwareVolumeBlockProtocolGuid, - (VOID **) FvBlock - ); + if (!PcdGetBool (PcdStandaloneMmVariableEnabled)) { + return gSmst->SmmHandleProtocol ( + FvBlockHandle, + &gEfiSmmFirmwareVolumeBlockProtocolGuid, + (VOID **) FvBlock + ); + } else { + return gMmst->MmHandleProtocol ( + FvBlockHandle, + &gEfiSmmFirmwareVolumeBlockProtocolGuid, + (VOID **) FvBlock + ); + } } /** @@ -119,11 +131,19 @@ FtwGetSarProtocol ( // // Locate Smm Swap Address Range protocol // - Status = gSmst->SmmLocateProtocol ( - &gEfiSmmSwapAddressRangeProtocolGuid, - NULL, - SarProtocol - ); + if (!PcdGetBool (PcdStandaloneMmVariableEnabled)) { + Status = gSmst->SmmLocateProtocol ( + &gEfiSmmSwapAddressRangeProtocolGuid, + NULL, + SarProtocol + ); + } else { + Status = gMmst->MmLocateProtocol ( + &gEfiSmmSwapAddressRangeProtocolGuid, + NULL, + SarProtocol + ); + } return Status; } @@ -158,13 +178,23 @@ GetFvbCountAndBuffer ( BufferSize = 0; *NumberHandles = 0; *Buffer = NULL; - Status = gSmst->SmmLocateHandle ( - ByProtocol, - &gEfiSmmFirmwareVolumeBlockProtocolGuid, - NULL, - &BufferSize, - *Buffer - ); + if (!PcdGetBool (PcdStandaloneMmVariableEnabled)) { + Status = gSmst->SmmLocateHandle ( + ByProtocol, + &gEfiSmmFirmwareVolumeBlockProtocolGuid, + NULL, + &BufferSize, + *Buffer + ); + } else { + Status = gMmst->MmLocateHandle ( + ByProtocol, + &gEfiSmmFirmwareVolumeBlockProtocolGuid, + NULL, + &BufferSize, + *Buffer + ); + } if (EFI_ERROR(Status) && Status != EFI_BUFFER_TOO_SMALL) { return EFI_NOT_FOUND; } @@ -173,15 +203,23 @@ GetFvbCountAndBuffer ( if (*Buffer == NULL) { return EFI_OUT_OF_RESOURCES; } - - Status = gSmst->SmmLocateHandle ( - ByProtocol, - &gEfiSmmFirmwareVolumeBlockProtocolGuid, - NULL, - &BufferSize, - *Buffer - ); - + if (!PcdGetBool (PcdStandaloneMmVariableEnabled)) { + Status = gSmst->SmmLocateHandle ( + ByProtocol, + &gEfiSmmFirmwareVolumeBlockProtocolGuid, + NULL, + &BufferSize, + *Buffer + ); + } else { + Status = gMmst->MmLocateHandle ( + ByProtocol, + &gEfiSmmFirmwareVolumeBlockProtocolGuid, + NULL, + &BufferSize, + *Buffer + ); + } *NumberHandles = BufferSize / sizeof(EFI_HANDLE); if (EFI_ERROR(Status)) { *NumberHandles = 0; @@ -335,10 +373,16 @@ SmmFaultTolerantWriteHandler ( return EFI_SUCCESS; } CommBufferPayloadSize = TempCommBufferSize - SMM_FTW_COMMUNICATE_HEADER_SIZE; - - if (!SmmIsBufferOutsideSmmValid ((UINTN)CommBuffer, TempCommBufferSize)) { - DEBUG ((EFI_D_ERROR, "SmmFtwHandler: SMM communication buffer in SMRAM or overflow!\n")); - return EFI_SUCCESS; + if (!PcdGetBool (PcdStandaloneMmVariableEnabled)) { + if (!SmmIsBufferOutsideSmmValid ((UINTN)CommBuffer, TempCommBufferSize)) { + DEBUG ((EFI_D_ERROR, "SmmFtwHandler: SMM communication buffer in SMRAM or overflow!\n")); + return EFI_SUCCESS; + } + } else { + if (!MmIsBufferOutsideMmValid ((UINTN)CommBuffer, TempCommBufferSize)) { + DEBUG ((EFI_D_ERROR, "SmmFtwHandler: SMM communication buffer in SMRAM or overflow!\n")); + return EFI_SUCCESS; + } } SmmFtwFunctionHeader = (SMM_FTW_COMMUNICATE_FUNCTION_HEADER *)CommBuffer; @@ -531,11 +575,19 @@ FvbNotificationEvent ( // Just return to avoid install SMM FaultTolerantWriteProtocol again // if SMM Fault Tolerant Write protocol had been installed. // - Status = gSmst->SmmLocateProtocol ( - &gEfiSmmFaultTolerantWriteProtocolGuid, - NULL, - (VOID **) &FtwProtocol - ); + if (!PcdGetBool (PcdStandaloneMmVariableEnabled)) { + Status = gSmst->SmmLocateProtocol ( + &gEfiSmmFaultTolerantWriteProtocolGuid, + NULL, + (VOID **) &FtwProtocol + ); + } else { + Status = gMmst->MmLocateProtocol ( + &gEfiSmmFaultTolerantWriteProtocolGuid, + NULL, + (VOID **) &FtwProtocol + ); + } if (!EFI_ERROR (Status)) { return EFI_SUCCESS; } @@ -551,31 +603,45 @@ FvbNotificationEvent ( // // Install protocol interface // - Status = gSmst->SmmInstallProtocolInterface ( - &mFtwDevice->Handle, - &gEfiSmmFaultTolerantWriteProtocolGuid, - EFI_NATIVE_INTERFACE, - &mFtwDevice->FtwInstance - ); + if (!PcdGetBool (PcdStandaloneMmVariableEnabled)) { + Status = gSmst->SmmInstallProtocolInterface ( + &mFtwDevice->Handle, + &gEfiSmmFaultTolerantWriteProtocolGuid, + EFI_NATIVE_INTERFACE, + &mFtwDevice->FtwInstance + ); + } else { + Status = gMmst->MmInstallProtocolInterface ( + &mFtwDevice->Handle, + &gEfiSmmFaultTolerantWriteProtocolGuid, + EFI_NATIVE_INTERFACE, + &mFtwDevice->FtwInstance + ); + } ASSERT_EFI_ERROR (Status); /// /// Register SMM FTW SMI handler /// - Status = gSmst->SmiHandlerRegister (SmmFaultTolerantWriteHandler, &gEfiSmmFaultTolerantWriteProtocolGuid, &SmmFtwHandle); - ASSERT_EFI_ERROR (Status); + if (!PcdGetBool (PcdStandaloneMmVariableEnabled)) { + Status = gSmst->SmiHandlerRegister (SmmFaultTolerantWriteHandler, &gEfiSmmFaultTolerantWriteProtocolGuid, &SmmFtwHandle); + ASSERT_EFI_ERROR (Status); - // - // Notify the Ftw wrapper driver SMM Ftw is ready - // - FtwHandle = NULL; - Status = gBS->InstallProtocolInterface ( + // + // Notify the Ftw wrapper driver SMM Ftw is ready + // + FtwHandle = NULL; + Status = gBS->InstallProtocolInterface ( &FtwHandle, &gEfiSmmFaultTolerantWriteProtocolGuid, EFI_NATIVE_INTERFACE, NULL ); - ASSERT_EFI_ERROR (Status); + ASSERT_EFI_ERROR (Status); + } else { + Status = gMmst->MmiHandlerRegister (SmmFaultTolerantWriteHandler, &gEfiSmmFaultTolerantWriteProtocolGuid, &SmmFtwHandle); + ASSERT_EFI_ERROR (Status); + } return EFI_SUCCESS; } @@ -655,3 +721,42 @@ SmmFaultTolerantWriteInitialize ( return EFI_SUCCESS; } + +/** + This function is the entry point of the Fault Tolerant Write driver. + + @param[in] ImageHandle A handle for the image that is initializing this driver + @param[in] SystemTable A pointer to the EFI system table + + @retval EFI_SUCCESS The initialization finished successfully. + @retval EFI_OUT_OF_RESOURCES Allocate memory error + @retval EFI_INVALID_PARAMETER Workspace or Spare block does not exist + +**/ +EFI_STATUS +EFIAPI +StandaloneMmFaultTolerantWriteInitialize ( + IN EFI_HANDLE ImageHandle, + IN EFI_MM_SYSTEM_TABLE *SystemTable + ) +{ + EFI_STATUS Status; + + // + // Allocate private data structure for SMM FTW protocol and do some initialization + // + Status = InitFtwDevice (&mFtwDevice); + if (EFI_ERROR(Status)) { + return Status; + } + Status = gMmst->MmRegisterProtocolNotify ( + &gEfiSmmFirmwareVolumeBlockProtocolGuid, + FvbNotificationEvent, + &mFvbRegistration + ); + ASSERT_EFI_ERROR (Status); + + FvbNotificationEvent (NULL, NULL, NULL); + + return EFI_SUCCESS; +} diff --git a/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteStandaloneMm.inf b/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteStandaloneMm.inf new file mode 100644 index 0000000..615f688 --- /dev/null +++ b/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteStandaloneMm.inf @@ -0,0 +1,101 @@ +## @file +# Fault Tolerant Write Smm Driver. +# +# This driver installs SMM Fault Tolerant Write (FTW) protocol, which provides fault +# tolerant write capability in SMM environment for block devices. Its implementation +# depends on the full functionality SMM FVB protocol that support read, write/erase +# flash access. +# +# Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.
+# Copyright (c) 2018, ARM Limited. All rights reserved.
+# +# This program and the accompanying materials +# are licensed and made available under the terms and conditions of the BSD License +# which accompanies this distribution. The full text of the license may be found at +# http://opensource.org/licenses/bsd-license.php +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +# +## + +[Defines] + INF_VERSION = 0x0001001A + BASE_NAME = FaultTolerantWriteMmStandalone + MODULE_UNI_FILE = SmmFaultTolerantWriteDxe.uni + FILE_GUID = 470CB248-E8AC-473c-BB4F-81069A1FE6FD + MODULE_TYPE = MM_STANDALONE + VERSION_STRING = 1.0 + PI_SPECIFICATION_VERSION = 0x00010032 + ENTRY_POINT = StandaloneMmFaultTolerantWriteInitialize + +# +# The following information is for reference only and not required by the build tools. +# +# VALID_ARCHITECTURES = IA32 X64 AARCH64 +# + +[Sources] + FtwMisc.c + UpdateWorkingBlock.c + FaultTolerantWrite.c + FaultTolerantWriteSmm.c + FaultTolerantWrite.h + FaultTolerantWriteSmmCommon.h + +[Packages] + MdePkg/MdePkg.dec + MdeModulePkg/MdeModulePkg.dec + StandaloneMmPkg/StandaloneMmPkg.dec + +[LibraryClasses] + MemoryAllocationLib + BaseMemoryLib + DebugLib + PcdLib + ReportStatusCodeLib + MemLib + StandaloneMmDriverEntryPoint + BaseLib + MmServicesTableLib + +[Guids] + # + # Signature in EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER + # + ## CONSUMES ## GUID + ## PRODUCES ## GUID + gEdkiiWorkingBlockSignatureGuid + +[Protocols] + gEfiSmmSwapAddressRangeProtocolGuid | gEfiMdeModulePkgTokenSpaceGuid.PcdFullFtwServiceEnable ## SOMETIMES_CONSUMES + ## NOTIFY + ## CONSUMES + gEfiSmmFirmwareVolumeBlockProtocolGuid + ## PRODUCES + ## UNDEFINED # SmiHandlerRegister + gEfiSmmFaultTolerantWriteProtocolGuid + gEfiSmmEndOfDxeProtocolGuid ## CONSUMES + +[FeaturePcd] + gEfiMdeModulePkgTokenSpaceGuid.PcdFullFtwServiceEnable ## CONSUMES + +[Pcd] + gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingBase ## SOMETIMES_CONSUMES + gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingBase64 ## CONSUMES + gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingSize ## CONSUMES + gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareBase ## SOMETIMES_CONSUMES + gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareBase64 ## CONSUMES + gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareSize ## CONSUMES + gEfiMdeModulePkgTokenSpaceGuid.PcdStandaloneMmVariableEnabled +# +# gBS->CalculateCrc32() is consumed in EntryPoint. +# PI spec said: When the DXE Foundation is notified that the EFI_RUNTIME_ARCH_PROTOCOL +# has been installed, then the Boot Service CalculateCrc32() is available. +# So add gEfiRuntimeArchProtocolGuid Depex here. +# +[Depex] + TRUE + #gEfiSmmFirmwareVolumeBlockProtocolGuid AND gEfiRuntimeArchProtocolGuid + +[UserExtensions.TianoCore."ExtraFiles"] + SmmFaultTolerantWriteDxeExtra.uni diff --git a/MdeModulePkg/Universal/FaultTolerantWriteDxe/UpdateWorkingBlock.c b/MdeModulePkg/Universal/FaultTolerantWriteDxe/UpdateWorkingBlock.c index 50d3421..9c98e57 100644 --- a/MdeModulePkg/Universal/FaultTolerantWriteDxe/UpdateWorkingBlock.c +++ b/MdeModulePkg/Universal/FaultTolerantWriteDxe/UpdateWorkingBlock.c @@ -3,6 +3,7 @@ Internal functions to operate Working Block Space. Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.
+Copyright (c) 2018, ARM Limited. All rights reserved.
This program and the accompanying materials are licensed and made available under the terms and conditions of the BSD License which accompanies this distribution. The full text of the license may be found at @@ -57,19 +58,21 @@ InitializeLocalWorkSpaceHeader ( ); mWorkingBlockHeader.WriteQueueSize = PcdGet32 (PcdFlashNvStorageFtwWorkingSize) - sizeof (EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER); - // - // Crc is calculated with all the fields except Crc and STATE, so leave them as FTW_ERASED_BYTE. - // + if (!PcdGetBool (PcdStandaloneMmVariableEnabled)) { + // + // Crc is calculated with all the fields except Crc and STATE, so leave them as FTW_ERASED_BYTE. + // - // - // Calculate the Crc of woking block header - // - Status = gBS->CalculateCrc32 ( - &mWorkingBlockHeader, - sizeof (EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER), - &mWorkingBlockHeader.Crc - ); - ASSERT_EFI_ERROR (Status); + // + // Calculate the Crc of woking block header + // + Status = gBS->CalculateCrc32 ( + &mWorkingBlockHeader, + sizeof (EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER), + &mWorkingBlockHeader.Crc + ); + ASSERT_EFI_ERROR (Status); + } mWorkingBlockHeader.WorkingBlockValid = FTW_VALID_STATE; mWorkingBlockHeader.WorkingBlockInvalid = FTW_INVALID_STATE; -- 2.7.4