| /** @file | |
| This file defines NvDataFv GUID and FTW working block structure header. | |
| This guid can be used as FileSystemGuid in EFI_FIRMWARE_VOLUME_HEADER if | |
| this FV image contains NV data, such as NV variable data. | |
| This guid can also be used as the signature of FTW working block header. | |
| Copyright (c) 2006 - 2009, Intel Corporation | |
| All rights reserved. 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 __SYSTEM_NV_DATA_GUID_H__ | |
| #define __SYSTEM_NV_DATA_GUID_H__ | |
| #define EFI_SYSTEM_NV_DATA_FV_GUID \ | |
| {0xfff12b8d, 0x7696, 0x4c8b, {0xa9, 0x85, 0x27, 0x47, 0x7, 0x5b, 0x4f, 0x50} } | |
| /// | |
| /// NvDataFv GUID used as the signature of FTW working block header. | |
| /// | |
| extern EFI_GUID gEfiSystemNvDataFvGuid; | |
| #define WORKING_BLOCK_VALID 0x1 | |
| #define WORKING_BLOCK_INVALID 0x2 | |
| /// | |
| /// EDKII Fault tolerant working block header | |
| /// The header is immediately followed by the write queue data. | |
| /// | |
| typedef struct { | |
| /// | |
| /// System Non Volatile FV Guid | |
| /// | |
| EFI_GUID Signature; | |
| /// | |
| /// 32bit CRC caculated for this header | |
| /// | |
| UINT32 Crc; | |
| /// | |
| /// Working block valid bit | |
| /// | |
| UINT8 WorkingBlockValid : 1; | |
| UINT8 WorkingBlockInvalid : 1; | |
| UINT8 Reserved : 6; | |
| UINT8 Reserved3[3]; | |
| /// | |
| /// Total size of the following write queue range. | |
| /// | |
| UINT64 WriteQueueSize; | |
| /// | |
| /// Write Queue data | |
| /// UINT8 WriteQueue[WriteQueueSize]; | |
| /// | |
| } EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER; | |
| #endif |