CloverBootloader/OvmfPkg/IntelTdx/PrePiHobListPointerLibTdx/PrePiHobListPointer.c

58 lines
1.1 KiB
C

/** @file
*
* Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
* SPDX-License-Identifier: BSD-2-Clause-Patent
*
**/
#include <PiPei.h>
#include <Library/PrePiHobListPointerLib.h>
#include <Library/DebugLib.h>
#include <Library/HobLib.h>
#include <WorkArea.h>
/**
Returns the pointer to the HOB list.
This function returns the pointer to first HOB in the list.
@return The pointer to the HOB list.
**/
VOID *
EFIAPI
PrePeiGetHobList (
VOID
)
{
TDX_WORK_AREA *TdxWorkArea;
TdxWorkArea = (TDX_WORK_AREA *)(UINTN)FixedPcdGet32 (PcdOvmfWorkAreaBase);
ASSERT (TdxWorkArea != NULL);
ASSERT (TdxWorkArea->SecTdxWorkArea.HobList != 0);
return (VOID *)(UINTN)TdxWorkArea->SecTdxWorkArea.HobList;
}
/**
Updates the pointer to the HOB list.
@param HobList Hob list pointer to store
**/
EFI_STATUS
EFIAPI
PrePeiSetHobList (
IN VOID *HobList
)
{
TDX_WORK_AREA *TdxWorkArea;
TdxWorkArea = (TDX_WORK_AREA *)(UINTN)FixedPcdGet32 (PcdOvmfWorkAreaBase);
ASSERT (TdxWorkArea != NULL);
TdxWorkArea->SecTdxWorkArea.HobList = (UINTN)HobList;
return EFI_SUCCESS;
}