mirror of https://github.com/acidanthera/audk.git
MdeModulePkg/FaultTolerantWriteDxe: implement standalone MM version
Implement a new version of the fault tolerant write driver that can be used in the context of a standalone MM implementation. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Jian J Wang <jian.j.wang@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com>
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Ard Biesheuvel
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/** @file
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Parts of the SMM/MM implementation that are specific to standalone MM
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Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
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Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <Library/SmmMemLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include "FaultTolerantWrite.h"
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#include "FaultTolerantWriteSmmCommon.h"
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/**
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This function checks if the buffer is valid per processor architecture and
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does not overlap with SMRAM.
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@param Buffer The buffer start address to be checked.
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@param Length The buffer length to be checked.
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@retval TRUE This buffer is valid per processor architecture and does not
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overlap with SMRAM.
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@retval FALSE This buffer is not valid per processor architecture or overlaps
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with SMRAM.
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**/
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BOOLEAN
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FtwSmmIsBufferOutsideSmmValid (
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IN EFI_PHYSICAL_ADDRESS Buffer,
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IN UINT64 Length
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)
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{
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return TRUE;
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}
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/**
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Internal implementation of CRC32. Depending on the execution context
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(standalone SMM or DXE vs standalone MM), this function is implemented
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via a call to the CalculateCrc32 () boot service, or via a library
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call.
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If Buffer is NULL, then ASSERT().
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If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
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@param[in] Buffer A pointer to the buffer on which the 32-bit CRC is to be computed.
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@param[in] Length The number of bytes in the buffer Data.
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@retval Crc32 The 32-bit CRC was computed for the data buffer.
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**/
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UINT32
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FtwCalculateCrc32 (
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IN VOID *Buffer,
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IN UINTN Length
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)
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{
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return CalculateCrc32 (Buffer, Length);
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}
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/**
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Notify the system that the SMM FTW driver is ready
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**/
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VOID
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FtwNotifySmmReady (
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VOID
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)
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{
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}
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/**
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This function is the entry point of the Fault Tolerant Write driver.
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@param[in] ImageHandle A handle for the image that is initializing this driver
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@param[in] MmSystemTable A pointer to the MM system table
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@retval EFI_SUCCESS The initialization finished successfully.
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@retval EFI_OUT_OF_RESOURCES Allocate memory error
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@retval EFI_INVALID_PARAMETER Workspace or Spare block does not exist
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**/
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EFI_STATUS
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EFIAPI
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StandaloneMmFaultTolerantWriteInitialize (
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IN EFI_HANDLE ImageHandle,
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IN EFI_MM_SYSTEM_TABLE *MmSystemTable
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)
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{
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return MmFaultTolerantWriteInitialize ();
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}
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@ -0,0 +1,90 @@
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## @file
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# Fault Tolerant Write Smm Driver.
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#
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# This driver installs SMM Fault Tolerant Write (FTW) protocol, which provides fault
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# tolerant write capability in SMM environment for block devices. Its implementation
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# depends on the full functionality SMM FVB protocol that support read, write/erase
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# flash access.
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#
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# Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
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# Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR>
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#
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# This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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# http://opensource.org/licenses/bsd-license.php
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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##
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[Defines]
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INF_VERSION = 0x0001001B
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BASE_NAME = FaultTolerantWriteStandaloneMm
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FILE_GUID = 3aade4ec-63cc-4a48-a928-5a374dd463eb
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MODULE_TYPE = MM_STANDALONE
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VERSION_STRING = 1.0
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PI_SPECIFICATION_VERSION = 0x00010032
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ENTRY_POINT = StandaloneMmFaultTolerantWriteInitialize
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#
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# The following information is for reference only and not required by the build tools.
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#
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# VALID_ARCHITECTURES = IA32 X64 ARM AARCH64
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#
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[Sources]
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FtwMisc.c
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UpdateWorkingBlock.c
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FaultTolerantWrite.c
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FaultTolerantWriteStandaloneMm.c
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FaultTolerantWriteSmm.c
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FaultTolerantWrite.h
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FaultTolerantWriteSmmCommon.h
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[Packages]
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MdePkg/MdePkg.dec
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MdeModulePkg/MdeModulePkg.dec
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StandaloneMmPkg/StandaloneMmPkg.dec
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[LibraryClasses]
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BaseLib
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BaseMemoryLib
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DebugLib
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MemoryAllocationLib
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MmServicesTableLib
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PcdLib
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ReportStatusCodeLib
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StandaloneMmDriverEntryPoint
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[Guids]
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#
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# Signature in EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER
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#
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## CONSUMES ## GUID
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## PRODUCES ## GUID
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gEdkiiWorkingBlockSignatureGuid
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[Protocols]
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gEfiSmmSwapAddressRangeProtocolGuid | gEfiMdeModulePkgTokenSpaceGuid.PcdFullFtwServiceEnable ## SOMETIMES_CONSUMES
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## NOTIFY
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## CONSUMES
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gEfiSmmFirmwareVolumeBlockProtocolGuid
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## PRODUCES
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## UNDEFINED # SmiHandlerRegister
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gEfiSmmFaultTolerantWriteProtocolGuid
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gEfiMmEndOfDxeProtocolGuid ## CONSUMES
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[FeaturePcd]
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gEfiMdeModulePkgTokenSpaceGuid.PcdFullFtwServiceEnable ## CONSUMES
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[Pcd]
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gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingBase ## SOMETIMES_CONSUMES
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gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingBase64 ## CONSUMES
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gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingSize ## CONSUMES
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gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareBase ## SOMETIMES_CONSUMES
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gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareBase64 ## CONSUMES
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gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareSize ## CONSUMES
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[Depex]
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TRUE
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