1 /** @file 2 Defines data structure that is the headers found at the runtime 3 updatable firmware volumes, such as the FileSystemGuid of the 4 working block, the header structure of the variable block, FTW 5 working block, or event log block. 6 7 Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR> 8 9 This program and the accompanying materials are licensed and made available 10 under the terms and conditions of the BSD License which accompanies this 11 distribution. The full text of the license may be found at 12 http://opensource.org/licenses/bsd-license.php 13 14 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 15 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 16 17 **/ 18 19 #ifndef __EFI_WORKING_BLOCK_HEADER_H__ 20 #define __EFI_WORKING_BLOCK_HEADER_H__ 21 22 // 23 // EFI Fault tolerant working block header 24 // The header is immediately followed by the write queue. 25 // 26 typedef struct { 27 EFI_GUID Signature; 28 UINT32 Crc; 29 UINT8 WorkingBlockValid : 1; 30 UINT8 WorkingBlockInvalid : 1; 31 #define WORKING_BLOCK_VALID 0x1 32 #define WORKING_BLOCK_INVALID 0x2 33 UINT8 Reserved : 6; 34 UINT8 Reserved3[3]; 35 UINT64 WriteQueueSize; 36 // 37 // UINT8 WriteQueue[WriteQueueSize]; 38 // 39 } EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER; 40 41 #endif 42
