1 /** @file 2 Microcode flash device access library. 3 4 Copyright (c) 2016, Intel Corporation. All rights reserved.<BR> 5 This program and the accompanying materials 6 are licensed and made available under the terms and conditions of the BSD License 7 which accompanies this distribution. The full text of the license may be found at 8 http://opensource.org/licenses/bsd-license.php 9 10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 12 13 **/ 14 15 16 #ifndef __MICROCODE_FLASH_ACCESS_LIB_H__ 17 #define __MICROCODE_FLASH_ACCESS_LIB_H__ 18 19 /** 20 Perform microcode write opreation. 21 22 @param[in] FlashAddress The address of flash device to be accessed. 23 @param[in] Buffer The pointer to the data buffer. 24 @param[in] Length The length of data buffer in bytes. 25 26 @retval EFI_SUCCESS The operation returns successfully. 27 @retval EFI_WRITE_PROTECTED The flash device is read only. 28 @retval EFI_UNSUPPORTED The flash device access is unsupported. 29 @retval EFI_INVALID_PARAMETER The input parameter is not valid. 30 **/ 31 EFI_STATUS 32 EFIAPI 33 MicrocodeFlashWrite ( 34 IN EFI_PHYSICAL_ADDRESS FlashAddress, 35 IN VOID *Buffer, 36 IN UINTN Length 37 ); 38 39 #endif 40