BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3902
This is the OvmfPkg specific CcProbeLib. It checks the Ovmf WorkArea
(PcdOvmfWorkAreaBase) to return the guest type.
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
--- /dev/null
+/** @file\r
+\r
+ CcProbeLib is used to probe the Confidential computing guest type.\r
+\r
+ Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>\r
+ SPDX-License-Identifier: BSD-2-Clause-Patent\r
+\r
+**/\r
+\r
+#include <Library/CcProbeLib.h>\r
+#include <WorkArea.h>\r
+\r
+/**\r
+ Probe the ConfidentialComputing Guest type. See defition of\r
+ CC_GUEST_TYPE in <ConfidentialComputingGuestAttr.h>.\r
+\r
+ @return The guest type\r
+\r
+**/\r
+UINT8\r
+EFIAPI\r
+CcProbe (\r
+ VOID\r
+ )\r
+{\r
+ OVMF_WORK_AREA *WorkArea;\r
+\r
+ WorkArea = (OVMF_WORK_AREA *)FixedPcdGet32 (PcdOvmfWorkAreaBase);\r
+\r
+ return WorkArea != NULL ? WorkArea->Header.GuestType : CcGuestTypeNonEncrypted;\r
+}\r
--- /dev/null
+## @file\r
+# CcProbeLib is used to probe Confidential Computing guest type.\r
+#\r
+# Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>\r
+# SPDX-License-Identifier: BSD-2-Clause-Patent\r
+#\r
+##\r
+\r
+[Defines]\r
+ INF_VERSION = 0x00010005\r
+ BASE_NAME = CcProbeLib\r
+ FILE_GUID = 05184ec9-abb0-4491-8584-e388639a7c48\r
+ MODULE_TYPE = BASE\r
+ VERSION_STRING = 1.0\r
+ LIBRARY_CLASS = CcProbeLib\r
+\r
+[Sources]\r
+ CcProbeLib.c\r
+\r
+[Packages]\r
+ MdePkg/MdePkg.dec\r
+ OvmfPkg/OvmfPkg.dec\r
+\r
+[Pcd]\r
+ gUefiOvmfPkgTokenSpaceGuid.PcdOvmfWorkAreaBase\r