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/** @file
EDK II specific implementation of UEFI variable depend on data structure.
Copyright (c) 2006 - 2008 Intel Corporation. <BR>
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 __VARIABLE_FORMAT_H__
#define __VARIABLE_FORMAT_H__
#define VARIABLE_STORE_SIGNATURE EFI_SIGNATURE_32 ('$', 'V', 'S', 'S')
#define MAX_VARIABLE_SIZE FixedPcdGet32(PcdMaxVariableSize)
//
// Enlarges the hardware error record maximum variable size to 32K bytes
//
#define MAX_HARDWARE_ERROR_VARIABLE_SIZE FixedPcdGet32(PcdMaxHardwareErrorVariableSize)
#define VARIABLE_DATA 0x55AA
//
// Variable Store Header flags
//
#define VARIABLE_STORE_FORMATTED 0x5a
#define VARIABLE_STORE_HEALTHY 0xfe
//
// The alignment of variable's start offset.
// For IA32/X64 architecture, the alignment is set to 1, and
// 8 is for IPF archtecture.
//
#if defined (MDE_CPU_IPF)
#define ALIGNMENT 8
#else
#define ALIGNMENT 1
#endif
#define HEADER_ALIGNMENT 4
//
// Variable Store Status
//
typedef enum {
EfiRaw,
EfiValid,
EfiInvalid,
EfiUnknown
} VARIABLE_STORE_STATUS;
//
// Variable State flags
//
#define VAR_IN_DELETED_TRANSITION 0xfe // Variable is in obsolete transistion
#define VAR_DELETED 0xfd // Variable is obsolete
#define VAR_HEADER_VALID_ONLY 0x7f // Variable header has been valid
#define VAR_ADDED 0x3f // Variable has been completely added
//
#define IS_VARIABLE_STATE(_c, _Mask) (BOOLEAN) (((~_c) & (~_Mask)) != 0)
#pragma pack(1)
//
// Variable Store region header
//
typedef struct {
UINT32 Signature;
UINT32 Size;
UINT8 Format;
UINT8 State;
UINT16 Reserved;
UINT32 Reserved1;
} VARIABLE_STORE_HEADER;
//
// Variable header structure
//
typedef struct {
UINT16 StartId;
UINT8 State;
UINT8 Reserved;
UINT32 Attributes;
UINT32 NameSize;
UINT32 DataSize;
EFI_GUID VendorGuid;
} VARIABLE_HEADER;
#pragma pack()
#endif // _EFI_VARIABLE_H_
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