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| author | Min Xu <min.m.xu@intel.com> | 2022-04-19 08:26:25 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2022-04-19 01:26:08 +0000 |
| commit | 2f44d77c685bff190661393b5e14cb7da2851946 (patch) | |
| tree | ff8a415c3cb822eea00daa184c13a9c38a4f8044 | |
| parent | 74a3eb975da7059b825c84bed759d2845de8de68 (diff) | |
| download | edk2-2f44d77c685bff190661393b5e14cb7da2851946.tar.gz edk2-2f44d77c685bff190661393b5e14cb7da2851946.tar.bz2 edk2-2f44d77c685bff190661393b5e14cb7da2851946.zip | |
OvmfPkg: Add CcProbeLib
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>
| -rw-r--r-- | OvmfPkg/Library/CcProbeLib/CcProbeLib.c | 31 | ||||
| -rw-r--r-- | OvmfPkg/Library/CcProbeLib/CcProbeLib.inf | 25 |
2 files changed, 56 insertions, 0 deletions
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.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Library/CcProbeLib.h>
+#include <WorkArea.h>
+
+/**
+ Probe the ConfidentialComputing Guest type. See defition of
+ CC_GUEST_TYPE in <ConfidentialComputingGuestAttr.h>.
+
+ @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.<BR>
+# 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
|