IntelSiliconPkg/Feature/Capsule/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.c

   1 /** @file
   2   Microcode flash device access library NULL instance.
   3
   4   Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9 #include <PiDxe.h>
  10
  11 #include <Library/BaseMemoryLib.h>
  12 #include <Library/MicrocodeFlashAccessLib.h>
  13
  14 /**
  15   Perform microcode write opreation.
  16
  17   @param[in] FlashAddress      The address of flash device to be accessed.
  18   @param[in] Buffer            The pointer to the data buffer.
  19   @param[in] Length            The length of data buffer in bytes.
  20
  21   @retval EFI_SUCCESS           The operation returns successfully.
  22   @retval EFI_WRITE_PROTECTED   The flash device is read only.
  23   @retval EFI_UNSUPPORTED       The flash device access is unsupported.
  24   @retval EFI_INVALID_PARAMETER The input parameter is not valid.
  25 **/
  26 EFI_STATUS
  27 EFIAPI
  28 MicrocodeFlashWrite (
  29   IN EFI_PHYSICAL_ADDRESS         FlashAddress,
  30   IN VOID                         *Buffer,
  31   IN UINTN                        Length
  32   )
  33 {
  34   CopyMem((VOID *)(UINTN)(FlashAddress), Buffer, Length);
  35   return EFI_SUCCESS;
  36 }