OvmfPkg/Library/NvVarsFileLib/NvVarsFileLib.h

   1 /** @file
   2   Save Non-Volatile Variables to a file system.
   3
   4   Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9 #ifndef __NV_VARS_FILE_LIB_INSTANCE__
  10 #define __NV_VARS_FILE_LIB_INSTANCE__
  11
  12 #include <Uefi.h>
  13
  14 #include <Guid/FileInfo.h>
  15
  16 #include <Protocol/SimpleFileSystem.h>
  17
  18 #include <Library/BaseLib.h>
  19 #include <Library/FileHandleLib.h>
  20 #include <Library/SerializeVariablesLib.h>
  21 #include <Library/UefiBootServicesTableLib.h>
  22 #include <Library/UefiRuntimeServicesTableLib.h>
  23 #include <Library/UefiLib.h>
  24
  25 /**
  26   Loads the non-volatile variables from the NvVars file on the
  27   given file system.
  28
  29   @param[in]  FsHandle - Handle for a gEfiSimpleFileSystemProtocolGuid instance
  30
  31   @return     EFI_STATUS based on the success or failure of load operation
  32
  33 **/
  34 EFI_STATUS
  35 LoadNvVarsFromFs (
  36   EFI_HANDLE  FsHandle
  37   );
  38
  39 /**
  40   Saves the non-volatile variables into the NvVars file on the
  41   given file system.
  42
  43   @param[in]  FsHandle - Handle for a gEfiSimpleFileSystemProtocolGuid instance
  44
  45   @return     EFI_STATUS based on the success or failure of load operation
  46
  47 **/
  48 EFI_STATUS
  49 SaveNvVarsToFs (
  50   EFI_HANDLE  FsHandle
  51   );
  52
  53 #endif