OvmfPkg/XenPlatformPei/Fv.c

   1 /** @file
   2   Build FV related hobs for platform.
   3
   4   Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
   5   Copyright (c) 2019, Citrix Systems, Inc.
   6
   7   SPDX-License-Identifier: BSD-2-Clause-Patent
   8
   9 **/
  10
  11 #include "PiPei.h"
  12 #include "Platform.h"
  13 #include <Library/DebugLib.h>
  14 #include <Library/HobLib.h>
  15 #include <Library/PeiServicesLib.h>
  16 #include <Library/PcdLib.h>
  17
  18
  19 /**
  20   Publish PEI & DXE (Decompressed) Memory based FVs to let PEI
  21   and DXE know about them.
  22
  23   @retval EFI_SUCCESS   Platform PEI FVs were initialized successfully.
  24
  25 **/
  26 EFI_STATUS
  27 PeiFvInitialization (
  28   VOID
  29   )
  30 {
  31   DEBUG ((DEBUG_INFO, "Platform PEI Firmware Volume Initialization\n"));
  32
  33   //
  34   // Create a memory allocation HOB for the PEI FV.
  35   //
  36   // Allocate as ACPI NVS is S3 is supported
  37   //
  38   BuildMemoryAllocationHob (
  39     PcdGet32 (PcdOvmfPeiMemFvBase),
  40     PcdGet32 (PcdOvmfPeiMemFvSize),
  41     EfiBootServicesData
  42     );
  43
  44   //
  45   // Let DXE know about the DXE FV
  46   //
  47   BuildFvHob (PcdGet32 (PcdOvmfDxeMemFvBase), PcdGet32 (PcdOvmfDxeMemFvSize));
  48
  49   //
  50   // Create a memory allocation HOB for the DXE FV.
  51   //
  52   // If "secure" S3 is needed, then SEC will decompress both PEI and DXE
  53   // firmware volumes at S3 resume too, hence we need to keep away the OS from
  54   // DXEFV as well. Otherwise we only need to keep away DXE itself from the
  55   // DXEFV area.
  56   //
  57   BuildMemoryAllocationHob (
  58     PcdGet32 (PcdOvmfDxeMemFvBase),
  59     PcdGet32 (PcdOvmfDxeMemFvSize),
  60     EfiBootServicesData
  61     );
  62
  63   //
  64   // Let PEI know about the DXE FV so it can find the DXE Core
  65   //
  66   PeiServicesInstallFvInfoPpi (
  67     NULL,
  68     (VOID *)(UINTN) PcdGet32 (PcdOvmfDxeMemFvBase),
  69     PcdGet32 (PcdOvmfDxeMemFvSize),
  70     NULL,
  71     NULL
  72     );
  73
  74   return EFI_SUCCESS;
  75 }
  76