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