MdeModulePkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / MdeModulePkg / Universal / FaultTolerantWriteDxe / FaultTolerantWriteStandaloneMm.c

/** @file\r
\r
  Parts of the SMM/MM implementation that are specific to standalone MM\r
\r
Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>\r
Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR>\r
SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include <Library/SmmMemLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include "FaultTolerantWrite.h"\r
#include "FaultTolerantWriteSmmCommon.h"\r
\r
/**\r
  This function checks if the buffer is valid per processor architecture and\r
  does not overlap with SMRAM.\r
\r
  @param Buffer The buffer start address to be checked.\r
  @param Length The buffer length to be checked.\r
\r
  @retval TRUE  This buffer is valid per processor architecture and does not\r
                overlap with SMRAM.\r
  @retval FALSE This buffer is not valid per processor architecture or overlaps\r
                with SMRAM.\r
**/\r
BOOLEAN\r
FtwSmmIsBufferOutsideSmmValid (\r
  IN EFI_PHYSICAL_ADDRESS  Buffer,\r
  IN UINT64                Length\r
  )\r
{\r
  return TRUE;\r
}\r
\r
/**\r
  Internal implementation of CRC32. Depending on the execution context\r
  (standalone SMM or DXE vs standalone MM), this function is implemented\r
  via a call to the CalculateCrc32 () boot service, or via a library\r
  call.\r
\r
  If Buffer is NULL, then ASSERT().\r
  If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r
\r
  @param[in]  Buffer       A pointer to the buffer on which the 32-bit CRC is to be computed.\r
  @param[in]  Length       The number of bytes in the buffer Data.\r
\r
  @retval Crc32            The 32-bit CRC was computed for the data buffer.\r
\r
**/\r
UINT32\r
FtwCalculateCrc32 (\r
  IN  VOID                         *Buffer,\r
  IN  UINTN                        Length\r
  )\r
{\r
  return CalculateCrc32 (Buffer, Length);\r
}\r
\r
/**\r
  Notify the system that the SMM FTW driver is ready.\r
**/\r
VOID\r
FtwNotifySmmReady (\r
  VOID\r
  )\r
{\r
}\r
\r
/**\r
  This function is the entry point of the Fault Tolerant Write driver.\r
\r
  @param[in] ImageHandle        A handle for the image that is initializing this driver\r
  @param[in] MmSystemTable      A pointer to the MM system table\r
\r
  @retval EFI_SUCCESS           The initialization finished successfully.\r
  @retval EFI_OUT_OF_RESOURCES  Allocate memory error\r
  @retval EFI_INVALID_PARAMETER Workspace or Spare block does not exist\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
StandaloneMmFaultTolerantWriteInitialize (\r
  IN EFI_HANDLE            ImageHandle,\r
  IN EFI_MM_SYSTEM_TABLE   *MmSystemTable\r
  )\r
{\r
  return MmFaultTolerantWriteInitialize ();\r
}\r