mirror of https://github.com/acidanthera/audk.git
98 lines
2.5 KiB
C
98 lines
2.5 KiB
C
/** @file
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EDK II specific implementation of UEFI variable depend on data structure.
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Copyright (c) 2006 - 2008 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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//
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// Variable Store region header
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//
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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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//
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// Variable header structure
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//
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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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