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   SPDX-License-Identifier: BSD-2-Clause-Patent
   9 **/
  10
  11 #include <Library/DebugLib.h>
  12 #include <Library/PcdLib.h>
  13 #include <Library/SmmServicesTableLib.h>
  14 #include <Protocol/DevicePath.h>
  15 #include <Protocol/SmmFirmwareVolumeBlock.h>
  16
  17 #include "FwBlockService.h"
  18
  19 VOID
  20 InstallProtocolInterfaces (
  21   IN EFI_FW_VOL_BLOCK_DEVICE *FvbDevice
  22   )
  23 {
  24   EFI_HANDLE FvbHandle;
  25   EFI_STATUS Status;
  26
  27   ASSERT (FeaturePcdGet (PcdSmmSmramRequire));
  28
  29   //
  30   // There is no SMM service that can install multiple protocols in the SMM
  31   // protocol database in one go.
  32   //
  33   // The SMM Firmware Volume Block protocol structure is the same as the
  34   // Firmware Volume Block protocol structure.
  35   //
  36   FvbHandle = NULL;
  37   DEBUG ((EFI_D_INFO, "Installing QEMU flash SMM FVB\n"));
  38   Status = gSmst->SmmInstallProtocolInterface (
  39                     &FvbHandle,
  40                     &gEfiSmmFirmwareVolumeBlockProtocolGuid,
  41                     EFI_NATIVE_INTERFACE,
  42                     &FvbDevice->FwVolBlockInstance
  43                     );
  44   ASSERT_EFI_ERROR (Status);
  45
  46   Status = gSmst->SmmInstallProtocolInterface (
  47                     &FvbHandle,
  48                     &gEfiDevicePathProtocolGuid,
  49                     EFI_NATIVE_INTERFACE,
  50                     FvbDevice->DevicePath
  51                     );
  52   ASSERT_EFI_ERROR (Status);
  53 }
  54
  55 VOID
  56 InstallVirtualAddressChangeHandler (
  57   VOID
  58   )
  59 {
  60   //
  61   // Nothing.
  62   //
  63 }
  64
  65 EFI_STATUS
  66 MarkIoMemoryRangeForRuntimeAccess (
  67   IN EFI_PHYSICAL_ADDRESS                BaseAddress,
  68   IN UINTN                               Length
  69   )
  70 {
  71   //
  72   // Nothing
  73   //
  74
  75   return EFI_SUCCESS;
  76 }
  77
  78 VOID
  79 SetPcdFlashNvStorageBaseAddresses (
  80   VOID
  81   )
  82 {
  83   RETURN_STATUS PcdStatus;
  84
  85   //
  86   // Set several PCD values to point to flash
  87   //
  88   PcdStatus = PcdSet64S (
  89     PcdFlashNvStorageVariableBase64,
  90     (UINTN) PcdGet32 (PcdOvmfFlashNvStorageVariableBase)
  91     );
  92   ASSERT_RETURN_ERROR (PcdStatus);
  93   PcdStatus = PcdSet32S (
  94     PcdFlashNvStorageFtwWorkingBase,
  95     PcdGet32 (PcdOvmfFlashNvStorageFtwWorkingBase)
  96     );
  97   ASSERT_RETURN_ERROR (PcdStatus);
  98   PcdStatus = PcdSet32S (
  99     PcdFlashNvStorageFtwSpareBase,
 100     PcdGet32 (PcdOvmfFlashNvStorageFtwSpareBase)
 101     );
 102   ASSERT_RETURN_ERROR (PcdStatus);
 103 }