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UefiCpuPkg/Include: Add MicrocodeFlashAccessLib header. 

This library is used to abstract microcode flash region access.
This library is consumed by a microcode capsule update module.

Cc: Jeff Fan <jeff.fan@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Michael Kinney <michael.d.kinney@intel.com>
This commit is contained in:
Jiewen Yao 2016-09-21 11:09:42 +08:00
parent cc0c03874a
commit faf2c63b4a
1 changed files with 39 additions and 0 deletions
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39
UefiCpuPkg/Include/Library/MicrocodeFlashAccessLib.h Normal file
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/** @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[in] FlashAddress The address of flash device to be accessed.
@param[in] Buffer The pointer to the data buffer.
@param[in] 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