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130e25699a
2) Add HEADER_VALID_ONLY state of variable, which represents only the header is valid and the data/name is stale. This may be caused by incomplete data updating. Adding the state helps to check whether the header is valid. If variable header is valid, then we must skip the data of variable with the valid size. If the header is invalid, we should only skip the header of variable. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4555 6f19259b-4bc3-4df7-8a09-765794883524
92 lines
2.4 KiB
C
92 lines
2.4 KiB
C
/**@file
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Header file for EFI Variable Services.
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Copyright (c) 2006 - 2007 Intel Corporation. <BR>
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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 __VARIABLE_FORMAT_H__
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#define __VARIABLE_FORMAT_H__
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#define VARIABLE_STORE_SIGNATURE EFI_SIGNATURE_32 ('$', 'V', 'S', 'S')
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#define MAX_VARIABLE_SIZE FixedPcdGet32(PcdMaxVariableSize)
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//
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// Enlarges the hardware error record maximum variable size to 32K bytes
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//
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#define MAX_HARDWARE_ERROR_VARIABLE_SIZE FixedPcdGet32(PcdMaxHardwareErrorVariableSize)
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#define VARIABLE_DATA 0x55AA
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//
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// Variable Store Header flags
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//
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#define VARIABLE_STORE_FORMATTED 0x5a
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#define VARIABLE_STORE_HEALTHY 0xfe
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//
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// The alignment of variable's start offset.
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// For IA32/X64 architecture, the alignment is set to 1, and
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// 8 is for IPF archtecture.
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//
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#if defined (MDE_CPU_IPF)
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#define ALIGNMENT 8
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#else
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#define ALIGNMENT 1
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#endif
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#define HEADER_ALIGNMENT 4
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//
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// Variable Store Status
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//
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typedef enum {
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EfiRaw,
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EfiValid,
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EfiInvalid,
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EfiUnknown
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} VARIABLE_STORE_STATUS;
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//
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// Variable State flags
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//
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#define VAR_IN_DELETED_TRANSITION 0xfe // Variable is in obsolete transistion
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#define VAR_DELETED 0xfd // Variable is obsolete
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#define VAR_HEADER_VALID_ONLY 0x7f // Variable header has been valid
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#define VAR_ADDED 0x3f // Variable has been completely added
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//
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#define IS_VARIABLE_STATE(_c, _Mask) (BOOLEAN) (((~_c) & (~_Mask)) != 0)
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#pragma pack(1)
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typedef struct {
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UINT32 Signature;
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UINT32 Size;
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UINT8 Format;
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UINT8 State;
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UINT16 Reserved;
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UINT32 Reserved1;
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} VARIABLE_STORE_HEADER;
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typedef struct {
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UINT16 StartId;
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UINT8 State;
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UINT8 Reserved;
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UINT32 Attributes;
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UINT32 NameSize;
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UINT32 DataSize;
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EFI_GUID VendorGuid;
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} VARIABLE_HEADER;
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#pragma pack()
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#endif // _EFI_VARIABLE_H_
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