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/** @file
Build FV related hobs for platform.
Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "PiPei.h"
#include "Platform.h"
#include <Library/DebugLib.h>
#include <Library/HobLib.h>
#include <Library/PeiServicesLib.h>
#include <Library/PcdLib.h>
/**
Publish PEI & DXE (Decompressed) Memory based FVs to let PEI
and DXE know about them.
@retval EFI_SUCCESS Platform PEI FVs were initialized successfully.
**/
EFI_STATUS
PeiFvInitialization (
IN EFI_HOB_PLATFORM_INFO *PlatformInfoHob
)
{
BOOLEAN SecureS3Needed;
DEBUG ((DEBUG_INFO, "Platform PEI Firmware Volume Initialization\n"));
//
// Create a memory allocation HOB for the PEI FV.
//
// Allocate as ACPI NVS is S3 is supported
//
BuildMemoryAllocationHob (
PcdGet32 (PcdOvmfPeiMemFvBase),
PcdGet32 (PcdOvmfPeiMemFvSize),
PlatformInfoHob->S3Supported ? EfiACPIMemoryNVS : EfiBootServicesData
);
//
// Let DXE know about the DXE FV
//
BuildFvHob (PcdGet32 (PcdOvmfDxeMemFvBase), PcdGet32 (PcdOvmfDxeMemFvSize));
SecureS3Needed = PlatformInfoHob->S3Supported && PlatformInfoHob->SmmSmramRequire;
//
// Create a memory allocation HOB for the DXE FV.
//
// If "secure" S3 is needed, then SEC will decompress both PEI and DXE
// firmware volumes at S3 resume too, hence we need to keep away the OS from
// DXEFV as well. Otherwise we only need to keep away DXE itself from the
// DXEFV area.
//
BuildMemoryAllocationHob (
PcdGet32 (PcdOvmfDxeMemFvBase),
PcdGet32 (PcdOvmfDxeMemFvSize),
SecureS3Needed ? EfiACPIMemoryNVS : EfiBootServicesData
);
//
// Additionally, said decompression will use temporary memory above the end
// of DXEFV, so let's keep away the OS from there too.
//
if (SecureS3Needed) {
UINT32 DxeMemFvEnd;
DxeMemFvEnd = PcdGet32 (PcdOvmfDxeMemFvBase) +
PcdGet32 (PcdOvmfDxeMemFvSize);
BuildMemoryAllocationHob (
DxeMemFvEnd,
PcdGet32 (PcdOvmfDecompressionScratchEnd) - DxeMemFvEnd,
EfiACPIMemoryNVS
);
}
//
// Let PEI know about the DXE FV so it can find the DXE Core
//
PeiServicesInstallFvInfoPpi (
NULL,
(VOID *)(UINTN)PcdGet32 (PcdOvmfDxeMemFvBase),
PcdGet32 (PcdOvmfDxeMemFvSize),
NULL,
NULL
);
return EFI_SUCCESS;
}
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