diff options
| author | Jiewen Yao <jiewen.yao@intel.com> | 2016-09-21 11:09:42 +0800 |
|---|---|---|
| committer | Jiewen Yao <jiewen.yao@intel.com> | 2016-11-08 22:43:16 +0800 |
| commit | faf2c63b4a0fdd93576a76c3f90f9f8f3abeaf58 (patch) | |
| tree | 992d564d366a75807f1338fa4e58fc9b4ae78a83 /UefiCpuPkg/Include | |
| parent | cc0c03874a8130870f2ab477c334dfcc4a4aba0e (diff) | |
| download | edk2-faf2c63b4a0fdd93576a76c3f90f9f8f3abeaf58.tar.gz edk2-faf2c63b4a0fdd93576a76c3f90f9f8f3abeaf58.tar.bz2 edk2-faf2c63b4a0fdd93576a76c3f90f9f8f3abeaf58.zip | |
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>
Diffstat (limited to 'UefiCpuPkg/Include')
| -rw-r--r-- | UefiCpuPkg/Include/Library/MicrocodeFlashAccessLib.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/UefiCpuPkg/Include/Library/MicrocodeFlashAccessLib.h b/UefiCpuPkg/Include/Library/MicrocodeFlashAccessLib.h new file mode 100644 index 0000000000..0dfc3ef376 --- /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[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
|