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+/*++
+
+Copyright (c) 2006, Intel Corporation
+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.
+
+Module Name:
+
+ EfiVariable.h
+
+Abstract:
+
+ Header file for EFI Variable Services
+
+--*/
+
+#ifndef _EFI_VARIABLE_H_
+#define _EFI_VARIABLE_H_
+
+#define VARIABLE_STORE_SIGNATURE EFI_SIGNATURE_32 ('$', 'V', 'S', 'S')
+
+#define MAX_VARIABLE_SIZE 1024
+
+#define VARIABLE_DATA 0x55AA
+
+//
+// Variable Store Header flags
+//
+#define VARIABLE_STORE_FORMATTED 0x5a
+#define VARIABLE_STORE_HEALTHY 0xfe
+
+//
+// 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+#define VAR_DELETED 0xfd // Variable is obsolete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_ADDED 0x7f // Variable has been completely added
+#define IS_VARIABLE_STATE(_c, _Mask) (BOOLEAN) (((~_c) & (~_Mask)) != 0)
+
+#pragma pack(1)
+
+typedef struct {
+ UINT32 Signature;
+ UINT32 Size;
+ UINT8 Format;
+ UINT8 State;
+ UINT16 Reserved;
+ UINT32 Reserved1;
+} VARIABLE_STORE_HEADER;
+
+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_