MdeModulePkg/Include/Guid/SystemNvDataGuid.h

   1 /** @file
   2   This file defines NvDataHob GUIDs for System Non Volatile HOB entries
   3   in the HOB list and NV system hob entry structure.
   4   It also defines NvDataFv GUID used as the signature of FTW working block header.
   5
   6 Copyright (c) 2006 - 2008, Intel Corporation
   7 All rights reserved. This program and the accompanying materials
   8 are licensed and made available under the terms and conditions of the BSD License
   9 which accompanies this distribution.  The full text of the license may be found at
  10 http://opensource.org/licenses/bsd-license.php
  11
  12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  14
  15 **/
  16
  17 #ifndef __SYSTEM_NV_DATA_GUID_H__
  18 #define __SYSTEM_NV_DATA_GUID_H__
  19
  20 #define EFI_SYSTEM_NV_DATA_FV_GUID \
  21   {0xfff12b8d, 0x7696, 0x4c8b, {0xa9, 0x85, 0x27, 0x47, 0x7, 0x5b, 0x4f, 0x50} }
  22
  23 #define EFI_SYSTEM_NV_DATA_HOB_GUID \
  24   {0xd6e5092d, 0xc7b2, 0x4872, {0xaf, 0x66, 0xfd, 0xc0, 0xe6, 0xf9, 0x5e, 0x78} }
  25
  26 ///
  27 /// Hob entry for NV data region
  28 ///
  29 typedef struct {
  30   EFI_GUID                  SystemNvDataHobGuid; /// EFI_SYSTEM_NV_DATA_HOB_GUID
  31   EFI_GUID                  SystemNvDataFvGuid;  /// Guid specifies the NvData Fv for the specific purpose, such as FTW, Error Log.
  32   EFI_LBA                   StartLba;            /// The starting logical block index.
  33   UINTN                     StartLbaOffset;      /// Offset into the starting block at which to the start of NvData region.
  34   EFI_LBA                   EndLba;              /// The last logical block index.
  35   UINTN                     EndLbaOffset;        /// Offset into the last block at which to the end of Nvdata region.
  36   UINT32                    DataTypeSignature;   /// NvData type in the specified NV range.
  37 } NV_SYSTEM_DATA_GUID_TYPE;
  38
  39 extern EFI_GUID gEfiSystemNvDataHobGuid;
  40
  41 ///
  42 /// NvDataFv GUID used as the signature of FTW working block header.
  43 ///
  44 extern EFI_GUID gEfiSystemNvDataFvGuid;
  45
  46 #endif