MdeModulePkg/Include/Guid/VariableInfo.h

   1 /** @file
   2   This file defines GUIDs used for variable list entries put in the EFI system table.
   3
   4 Copyright (c) 2006 - 2008, Intel Corporation
   5 All rights reserved. This program and the accompanying materials
   6 are licensed and made available under the terms and conditions of the BSD License
   7 which accompanies this distribution.  The full text of the license may be found at
   8 http://opensource.org/licenses/bsd-license.php
   9
  10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #ifndef __VARIABLE_INFO_GUID_H__
  16 #define __VARIABLE_INFO_GUID_H__
  17
  18 // {DDCF3616-3275-4164-98B6-FE85707FFE7D}
  19 #define EFI_VARIABLE_INFO_GUID \
  20   { 0xddcf3616, 0x3275, 0x4164, { 0x98, 0xb6, 0xfe, 0x85, 0x70, 0x7f, 0xfe, 0x7d } }
  21
  22 extern EFI_GUID gEfiVariableInfoGuid;
  23
  24
  25 typedef struct _VARIABLE_INFO_ENTRY  VARIABLE_INFO_ENTRY;
  26
  27 ///
  28 /// This list gets put in the EFI system table. It is produced by the Variable driver at
  29 /// Boot Services time and records read and write access to a given variable
  30 ///
  31 struct _VARIABLE_INFO_ENTRY {
  32   VARIABLE_INFO_ENTRY *Next;       /// Pointer to next entry
  33   EFI_GUID            VendorGuid;  /// Guid of Variable
  34   CHAR16              *Name;       /// Name of Variable
  35   UINT32              Attributes;  /// Attributes of variable defined in UEFI spec
  36   UINT32              ReadCount;   /// Times to read this variable
  37   UINT32              WriteCount;  /// Times to write this variable
  38   UINT32              DeleteCount; /// Times to delete this variable
  39   UINT32              CacheCount;  /// Times that cache hits this variable
  40   BOOLEAN             Volatile;    /// TRUE if volatile FALSE if non-volatile
  41 };
  42
  43 #endif