diff --git a/OvmfPkg/Library/CcProbeLib/CcProbeLib.c b/OvmfPkg/Library/CcProbeLib/CcProbeLib.c new file mode 100644 index 0000000000..d698e5c8d7 --- /dev/null +++ b/OvmfPkg/Library/CcProbeLib/CcProbeLib.c @@ -0,0 +1,31 @@ +/** @file + + CcProbeLib is used to probe the Confidential computing guest type. + + Copyright (c) 2022, Intel Corporation. All rights reserved.
+ SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include +#include + +/** + Probe the ConfidentialComputing Guest type. See defition of + CC_GUEST_TYPE in . + + @return The guest type + +**/ +UINT8 +EFIAPI +CcProbe ( + VOID + ) +{ + OVMF_WORK_AREA *WorkArea; + + WorkArea = (OVMF_WORK_AREA *)FixedPcdGet32 (PcdOvmfWorkAreaBase); + + return WorkArea != NULL ? WorkArea->Header.GuestType : CcGuestTypeNonEncrypted; +} diff --git a/OvmfPkg/Library/CcProbeLib/CcProbeLib.inf b/OvmfPkg/Library/CcProbeLib/CcProbeLib.inf new file mode 100644 index 0000000000..5300c9ba26 --- /dev/null +++ b/OvmfPkg/Library/CcProbeLib/CcProbeLib.inf @@ -0,0 +1,25 @@ +## @file +# CcProbeLib is used to probe Confidential Computing guest type. +# +# Copyright (c) 2022, Intel Corporation. All rights reserved.
+# SPDX-License-Identifier: BSD-2-Clause-Patent +# +## + +[Defines] + INF_VERSION = 0x00010005 + BASE_NAME = CcProbeLib + FILE_GUID = 05184ec9-abb0-4491-8584-e388639a7c48 + MODULE_TYPE = BASE + VERSION_STRING = 1.0 + LIBRARY_CLASS = CcProbeLib + +[Sources] + CcProbeLib.c + +[Packages] + MdePkg/MdePkg.dec + OvmfPkg/OvmfPkg.dec + +[Pcd] + gUefiOvmfPkgTokenSpaceGuid.PcdOvmfWorkAreaBase