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https://github.com/CloverHackyColor/CloverBootloader.git
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92 lines
2.2 KiB
C
92 lines
2.2 KiB
C
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/** @file
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TdxHelper Functions which are used in PEI phase
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Copyright (c) 2022 - 2023, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Base.h>
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#include <PiPei.h>
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/**
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Build the GuidHob for tdx measurements which were done in SEC phase.
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The measurement values are stored in WorkArea.
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@retval EFI_SUCCESS The GuidHob is built successfully
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@retval Others Other errors as indicated
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**/
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EFI_STATUS
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InternalBuildGuidHobForTdxMeasurement (
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VOID
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);
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/**
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In Tdx guest, some information need to be passed from host VMM to guest
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firmware. For example, the memory resource, etc. These information are
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prepared by host VMM and put in TdHob which is described in TdxMetadata.
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TDVF processes the TdHob to accept memories.
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@retval EFI_SUCCESS Successfully process the TdHob
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@retval Others Other error as indicated
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**/
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EFI_STATUS
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EFIAPI
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TdxHelperProcessTdHob (
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VOID
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)
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{
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return EFI_UNSUPPORTED;
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}
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/**
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In Tdx guest, TdHob is passed from host VMM to guest firmware and it contains
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the information of the memory resource. From the security perspective before
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it is consumed, it should be measured and extended.
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*
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* @retval EFI_SUCCESS Successfully measure the TdHob
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* @retval Others Other error as indicated
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*/
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EFI_STATUS
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EFIAPI
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TdxHelperMeasureTdHob (
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VOID
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)
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{
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return EFI_UNSUPPORTED;
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}
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/**
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* In Tdx guest, Configuration FV (CFV) is treated as external input because it
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* may contain the data provided by VMM. From the sucurity perspective Cfv image
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* should be measured before it is consumed.
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*
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* @retval EFI_SUCCESS Successfully measure the CFV image
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* @retval Others Other error as indicated
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*/
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EFI_STATUS
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EFIAPI
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TdxHelperMeasureCfvImage (
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VOID
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)
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{
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return EFI_UNSUPPORTED;
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}
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/**
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Build the GuidHob for tdx measurements which were done in SEC phase.
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The measurement values are stored in WorkArea.
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@retval EFI_SUCCESS The GuidHob is built successfully
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@retval Others Other errors as indicated
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**/
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EFI_STATUS
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EFIAPI
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TdxHelperBuildGuidHobForTdxMeasurement (
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VOID
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)
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{
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return InternalBuildGuidHobForTdxMeasurement ();
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}
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