UefiCpuPkg: Move AsmRelocateApLoopStart from Mpfuncs.nasm to AmdSev.nasm

[mirror_edk2.git] / OvmfPkg / Include / Library / NvVarsFileLib.h

/** @file\r
  Provides functions to save and restore NV variables in a file.\r
\r
  Copyright (c) 2009, Intel Corporation. All rights reserved.<BR>\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#ifndef __NV_VARS_FILE_LIB__\r
#define __NV_VARS_FILE_LIB__\r
\r
/**\r
  Attempts to connect the NvVarsFileLib to the specified file system.\r
\r
  @param[in]  FsHandle - Handle for a gEfiSimpleFileSystemProtocolGuid instance\r
\r
  @return     The EFI_STATUS while attempting to connect the NvVarsFileLib\r
              to the file system instance.\r
  @retval     EFI_SUCCESS - The given file system was connected successfully\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
ConnectNvVarsToFileSystem (\r
  IN EFI_HANDLE  FsHandle\r
  );\r
\r
/**\r
  Update non-volatile variables stored on the file system.\r
\r
  @return     The EFI_STATUS while attempting to update the variable on\r
              the connected file system.\r
  @retval     EFI_SUCCESS - The non-volatile variables were saved to the disk\r
  @retval     EFI_NOT_STARTED - A file system has not been connected\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
UpdateNvVarsOnFileSystem (\r
  );\r
\r
#endif\r