OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FwBlockServiceSmm.c

   1 /**@file
   2   Functions related to the Firmware Volume Block service whose
   3   implementation is specific to the SMM driver build.
   4
   5   Copyright (C) 2015, Red Hat, Inc.
   6   Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
   7
   8   This program and the accompanying materials are licensed and made available
   9   under the terms and conditions of the BSD License which accompanies this
  10   distribution.  The full text of the license may be found at
  11   http://opensource.org/licenses/bsd-license.php
  12
  13   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  14   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  15 **/
  16
  17 #include <Library/DebugLib.h>
  18 #include <Library/SmmServicesTableLib.h>
  19 #include <Protocol/DevicePath.h>
  20 #include <Protocol/SmmFirmwareVolumeBlock.h>
  21
  22 #include "FwBlockService.h"
  23
  24 VOID
  25 InstallProtocolInterfaces (
  26   IN EFI_FW_VOL_BLOCK_DEVICE *FvbDevice
  27   )
  28 {
  29   EFI_HANDLE FvbHandle;
  30   EFI_STATUS Status;
  31
  32   //
  33   // There is no SMM service that can install multiple protocols in the SMM
  34   // protocol database in one go.
  35   //
  36   // The SMM Firmware Volume Block protocol structure is the same as the
  37   // Firmware Volume Block protocol structure.
  38   //
  39   FvbHandle = NULL;
  40   DEBUG ((EFI_D_INFO, "Installing QEMU flash SMM FVB\n"));
  41   Status = gSmst->SmmInstallProtocolInterface (
  42                     &FvbHandle,
  43                     &gEfiSmmFirmwareVolumeBlockProtocolGuid,
  44                     EFI_NATIVE_INTERFACE,
  45                     &FvbDevice->FwVolBlockInstance
  46                     );
  47   ASSERT_EFI_ERROR (Status);
  48
  49   Status = gSmst->SmmInstallProtocolInterface (
  50                     &FvbHandle,
  51                     &gEfiDevicePathProtocolGuid,
  52                     EFI_NATIVE_INTERFACE,
  53                     FvbDevice->DevicePath
  54                     );
  55   ASSERT_EFI_ERROR (Status);
  56 }
  57
  58 VOID
  59 InstallVirtualAddressChangeHandler (
  60   VOID
  61   )
  62 {
  63   //
  64   // Nothing.
  65   //
  66 }