diff --git a/OvmfPkg/IntelTdx/PrePiHobListPointerLibTdx/PrePiHobListPointer.c b/OvmfPkg/IntelTdx/PrePiHobListPointerLibTdx/PrePiHobListPointer.c new file mode 100644 index 0000000000..1b41a3983c --- /dev/null +++ b/OvmfPkg/IntelTdx/PrePiHobListPointerLibTdx/PrePiHobListPointer.c @@ -0,0 +1,57 @@ +/** @file +* +* Copyright (c) 2021, Intel Corporation. All rights reserved.
+* SPDX-License-Identifier: BSD-2-Clause-Patent +* +**/ + +#include +#include +#include +#include +#include + +/** + 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 (PcdSevEsWorkAreaBase); + 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 (PcdSevEsWorkAreaBase); + ASSERT (TdxWorkArea != NULL); + + TdxWorkArea->SecTdxWorkArea.HobList = (UINTN)HobList; + + return EFI_SUCCESS; +} diff --git a/OvmfPkg/IntelTdx/PrePiHobListPointerLibTdx/PrePiHobListPointerLibTdx.inf b/OvmfPkg/IntelTdx/PrePiHobListPointerLibTdx/PrePiHobListPointerLibTdx.inf new file mode 100644 index 0000000000..2667f841ce --- /dev/null +++ b/OvmfPkg/IntelTdx/PrePiHobListPointerLibTdx/PrePiHobListPointerLibTdx.inf @@ -0,0 +1,29 @@ +#/** @file +# +# Copyright (c) 2021, Intel Corporation. All rights reserved.
+# SPDX-License-Identifier: BSD-2-Clause-Patent +# +#**/ + +[Defines] + INF_VERSION = 0x00010005 + BASE_NAME = PrePiHobListPointerLibTdx + FILE_GUID = 28297DB9-4CE7-4679-80E6-0270B215A2F2 + MODULE_TYPE = BASE + VERSION_STRING = 1.0 + LIBRARY_CLASS = PrePiHobListPointerLib + +[Sources] + PrePiHobListPointer.c + +[Packages] + MdePkg/MdePkg.dec + OvmfPkg/OvmfPkg.dec + EmbeddedPkg/EmbeddedPkg.dec + UefiCpuPkg/UefiCpuPkg.dec + +[Pcd] + gUefiCpuPkgTokenSpaceGuid.PcdSevEsWorkAreaBase + +[LibraryClasses] + PcdLib