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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6750 6f19259b-4bc3-4df7-8a09-765794883524
53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
/** @file
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The header structure of FTW working block region.
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Copyright (c) 2006 - 2008, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef __EFI_WORKING_BLOCK_HEADER_H__
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#define __EFI_WORKING_BLOCK_HEADER_H__
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#define WORKING_BLOCK_VALID 0x1
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#define WORKING_BLOCK_INVALID 0x2
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///
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/// EFI Fault tolerant working block header
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/// The header is immediately followed by the write queue.
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///
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typedef struct {
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///
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/// System Non Volatile FV Guid
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///
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EFI_GUID Signature;
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///
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/// 32bit CRC caculated for this header
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///
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UINT32 Crc;
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///
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/// Working block valid bit
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///
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UINT8 WorkingBlockValid : 1;
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UINT8 WorkingBlockInvalid : 1;
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UINT8 Reserved : 6;
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UINT8 Reserved3[3];
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///
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/// Total size of the following write queue range.
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///
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UINT64 WriteQueueSize;
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///
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/// Write Queue data
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/// UINT8 WriteQueue[WriteQueueSize];
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///
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} EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER;
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#endif
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