1 /** @file 2 The variable data structures are related to EDK II-specific implementation of UEFI variables. 3 VariableFormat.h defines variable data headers and variable storage region headers. 4 5 Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR> 6 This program and the accompanying materials are licensed and made available under 7 the terms and conditions of the BSD License that accompanies this distribution. 8 The full text of the license may be found at 9 http://opensource.org/licenses/bsd-license.php. 10 11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 13 14 **/ 15 16 #ifndef __VARIABLE_INDEX_TABLE_H__ 17 #define __VARIABLE_INDEX_TABLE_H__ 18 19 typedef struct { 20 VARIABLE_HEADER *CurrPtr; 21 VARIABLE_HEADER *EndPtr; 22 VARIABLE_HEADER *StartPtr; 23 } VARIABLE_POINTER_TRACK; 24 25 #define VARIABLE_INDEX_TABLE_VOLUME 122 26 27 #define EFI_VARIABLE_INDEX_TABLE_GUID \ 28 { 0x8cfdb8c8, 0xd6b2, 0x40f3, { 0x8e, 0x97, 0x02, 0x30, 0x7c, 0xc9, 0x8b, 0x7c } } 29 30 extern EFI_GUID gEfiVariableIndexTableGuid; 31 32 /// 33 /// Use this data structure to store variable-related info, which can decrease 34 /// the cost of access to NV. 35 /// 36 typedef struct { 37 UINT16 Length; 38 UINT16 GoneThrough; 39 VARIABLE_HEADER *EndPtr; 40 VARIABLE_HEADER *StartPtr; 41 /// 42 /// This field is used to store the distance of two neighbouring VAR_ADDED type variables. 43 /// The meaning of the field is implement-dependent. 44 UINT16 Index[VARIABLE_INDEX_TABLE_VOLUME]; 45 } VARIABLE_INDEX_TABLE; 46 47 #endif // __VARIABLE_INDEX_TABLE_H__ 48
