This library is used to abstract microcode flash region access. This library is consumed by a microcode capsule update module.
Cc: Jeff Fan <jeff....@intel.com> Cc: Feng Tian <feng.t...@intel.com> Cc: Star Zeng <star.z...@intel.com> Cc: Michael D Kinney <michael.d.kin...@intel.com> Cc: Liming Gao <liming....@intel.com> Cc: Chao Zhang <chao.b.zh...@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jiewen Yao <jiewen....@intel.com> Reviewed-by: Jeff Fan <jeff....@intel.com> --- UefiCpuPkg/Include/Library/MicrocodeFlashAccessLib.h | 39 ++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/UefiCpuPkg/Include/Library/MicrocodeFlashAccessLib.h b/UefiCpuPkg/Include/Library/MicrocodeFlashAccessLib.h new file mode 100644 index 0000000..fe2f630 --- /dev/null +++ b/UefiCpuPkg/Include/Library/MicrocodeFlashAccessLib.h @@ -0,0 +1,39 @@ +/** @file + Microcode flash device access library. + + Copyright (c) 2016, Intel Corporation. All rights reserved.<BR> + 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. + +**/ + + +#ifndef __MICROCODE_FLASH_ACCESS_LIB_H__ +#define __MICROCODE_FLASH_ACCESS_LIB_H__ + +/** + Perform microcode write opreation. + + @param FlashAddress The address of flash device to be accessed. + @param Buffer The pointer to the data buffer. + @param Length The length of data buffer in bytes. + + @retval EFI_SUCCESS The operation returns successfully. + @retval EFI_WRITE_PROTECTED The flash device is read only. + @retval EFI_UNSUPPORTED The flash device access is unsupported. + @retval EFI_INVALID_PARAMETER The input parameter is not valid. +**/ +EFI_STATUS +EFIAPI +MicrocodeFlashWrite ( + IN EFI_PHYSICAL_ADDRESS FlashAddress, + IN VOID *Buffer, + IN UINTN Length + ); + +#endif -- 2.7.4.windows.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
