OvmfPkg: QemuFlashFvbServices: Introduce Standalone MM instance

This update introduces the implementation of QemuFlashFvbServices to
support operation with Standalone MM backed platforms.

Signed-off-by: Kun Qin <kun.qin@microsoft.com>

OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FvbServicesStandaloneMm.inf

@@ -0,0 +1,78 @@
+## @file
+#  Component description file for QEMU Flash Firmware Volume Block MM driver
+#  module.
+#
+#  This Standalone MM driver implements and produces the MM Firmware Volue Block Protocol
+#  for a QEMU flash device.
+#
+#  Copyright (C) 2015, Red Hat, Inc.
+#  Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) Microsoft Corporation.
+#
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+  INF_VERSION                    = 0x0001001B
+  BASE_NAME                      = FvbServicesStandaloneMm
+  FILE_GUID                      = 834DA76A-4EA1-41C7-9601-FE7A7C564757
+  MODULE_TYPE                    = MM_STANDALONE
+  VERSION_STRING                 = 1.0
+  PI_SPECIFICATION_VERSION       = 0x00010032
+  ENTRY_POINT                    = FvbInitializeStandaloneMm
+
+#
+# The following information is for reference only and not required by the build
+# tools.
+#
+#  VALID_ARCHITECTURES           = IA32 X64
+#
+
+[Sources]
+  FvbInfo.c
+  FwBlockService.c
+  FwBlockService.h
+  FwBlockServiceStandaloneMm.c
+  QemuFlash.c
+  QemuFlash.h
+  QemuFlashSmm.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+  MdeModulePkg/MdeModulePkg.dec
+  OvmfPkg/OvmfPkg.dec
+  StandaloneMmPkg/StandaloneMmPkg.dec
+
+[LibraryClasses]
+  BaseLib
+  BaseMemoryLib
+  DebugLib
+  DevicePathLib
+  MemoryAllocationLib
+  MemEncryptSevLib
+  PcdLib
+  MmServicesTableLib
+  StandaloneMmDriverEntryPoint
+
+[Guids]
+
+[Protocols]
+  gEfiSmmFirmwareVolumeBlockProtocolGuid        # PROTOCOL ALWAYS_PRODUCED
+  gEfiDevicePathProtocolGuid                    # PROTOCOL ALWAYS_PRODUCED
+
+[FixedPcd]
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableSize
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingSize
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareSize
+  gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFlashNvStorageVariableBase
+  gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFlashNvStorageEventLogSize
+  gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFdBaseAddress
+  gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFirmwareFdSize
+  gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFirmwareBlockSize
+
+[FeaturePcd]
+  gUefiOvmfPkgTokenSpaceGuid.PcdSmmSmramRequire
+
+[Depex]
+  TRUE

OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FwBlockServiceStandaloneMm.c

@@ -0,0 +1,116 @@
+/**@file
+  Functions related to the Firmware Volume Block service whose
+  implementation is specific to the SMM driver build.
+
+  Copyright (C) 2015, Red Hat, Inc.
+  Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include <Library/DebugLib.h>
+#include <Library/PcdLib.h>
+#include <Library/MmServicesTableLib.h>
+#include <Protocol/DevicePath.h>
+#include <Protocol/SmmFirmwareVolumeBlock.h>
+
+#include "FwBlockService.h"
+
+VOID
+InstallProtocolInterfaces (
+  IN EFI_FW_VOL_BLOCK_DEVICE  *FvbDevice
+  )
+{
+  EFI_HANDLE  FvbHandle;
+  EFI_STATUS  Status;
+
+  ASSERT (FeaturePcdGet (PcdSmmSmramRequire));
+
+  //
+  // There is no SMM service that can install multiple protocols in the SMM
+  // protocol database in one go.
+  //
+  // The SMM Firmware Volume Block protocol structure is the same as the
+  // Firmware Volume Block protocol structure.
+  //
+  FvbHandle = NULL;
+  DEBUG ((DEBUG_INFO, "Installing QEMU flash SMM FVB\n"));
+  Status = gMmst->MmInstallProtocolInterface (
+                    &FvbHandle,
+                    &gEfiSmmFirmwareVolumeBlockProtocolGuid,
+                    EFI_NATIVE_INTERFACE,
+                    &FvbDevice->FwVolBlockInstance
+                    );
+  ASSERT_EFI_ERROR (Status);
+
+  Status = gMmst->MmInstallProtocolInterface (
+                    &FvbHandle,
+                    &gEfiDevicePathProtocolGuid,
+                    EFI_NATIVE_INTERFACE,
+                    FvbDevice->DevicePath
+                    );
+  ASSERT_EFI_ERROR (Status);
+}
+
+VOID
+InstallVirtualAddressChangeHandler (
+  VOID
+  )
+{
+  //
+  // Nothing.
+  //
+}
+
+EFI_STATUS
+MarkIoMemoryRangeForRuntimeAccess (
+  IN EFI_PHYSICAL_ADDRESS  BaseAddress,
+  IN UINTN                 Length
+  )
+{
+  //
+  // Nothing
+  //
+
+  return EFI_SUCCESS;
+}
+
+VOID
+SetPcdFlashNvStorageBaseAddresses (
+  VOID
+  )
+{
+  //
+  // Do nothing.
+  //
+}
+
+VOID
+UpdateQemuFlashVariablesEnable (
+  VOID
+  )
+{
+  //
+  // Do nothing for Standalone MM.
+  //
+}
+
+/**
+  Abstracted entry point for Standalone MM instance.
+  FVB Standalone MM driver entry point.
+
+  @param[in] ImageHandle    A handle for the image that is initializing this
+                            driver
+  @param[in] MmSystemTable  A pointer to the MM system table
+
+  @retval EFI_SUCCESS       Variable service successfully initialized.
+**/
+EFI_STATUS
+EFIAPI
+FvbInitializeStandaloneMm (
+  IN EFI_HANDLE           ImageHandle,
+  IN EFI_MM_SYSTEM_TABLE  *MmSystemTable
+  )
+{
+  return FvbInitialize (NULL, NULL);
+}