BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3275
The MpInitLib uses the ConfidentialComputingAttr PCD to determine whether AMD SEV is active so that it can use the VMGEXITs defined in the GHCB specification to create APs. Cc: Michael Roth <michael.r...@amd.com> Cc: Ray Ni <ray...@intel.com> Cc: Rahul Kumar <rahul1.ku...@intel.com> Cc: Eric Dong <eric.d...@intel.com> Cc: James Bottomley <j...@linux.ibm.com> Cc: Min Xu <min.m...@intel.com> Cc: Jiewen Yao <jiewen....@intel.com> Cc: Tom Lendacky <thomas.lenda...@amd.com> Cc: Jordan Justen <jordan.l.jus...@intel.com> Cc: Ard Biesheuvel <ardb+tianoc...@kernel.org> Cc: Erdem Aktas <erdemak...@google.com> Cc: Gerd Hoffmann <kra...@redhat.com> Suggested-by: Jiewen Yao <jiewen....@intel.com> Signed-off-by: Brijesh Singh <brijesh.si...@amd.com> --- OvmfPkg/PlatformPei/PlatformPei.inf | 1 + OvmfPkg/PlatformPei/AmdSev.c | 15 +++++++++++++++ 2 files changed, 16 insertions(+) diff --git a/OvmfPkg/PlatformPei/PlatformPei.inf b/OvmfPkg/PlatformPei/PlatformPei.inf index 67eb7aa7166b..233b9494f64b 100644 --- a/OvmfPkg/PlatformPei/PlatformPei.inf +++ b/OvmfPkg/PlatformPei/PlatformPei.inf @@ -106,6 +106,7 @@ [Pcd] gUefiCpuPkgTokenSpaceGuid.PcdCpuBootLogicalProcessorNumber gUefiCpuPkgTokenSpaceGuid.PcdCpuApStackSize gUefiCpuPkgTokenSpaceGuid.PcdSevEsIsEnabled + gUefiCpuPkgTokenSpaceGuid.PcdConfidentialComputingGuestAttr [FixedPcd] gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress diff --git a/OvmfPkg/PlatformPei/AmdSev.c b/OvmfPkg/PlatformPei/AmdSev.c index 391e7bbb7dbd..5e2c891309d4 100644 --- a/OvmfPkg/PlatformPei/AmdSev.c +++ b/OvmfPkg/PlatformPei/AmdSev.c @@ -20,6 +20,7 @@ #include <Register/Amd/Msr.h> #include <Register/Intel/SmramSaveStateMap.h> #include <Library/VmgExitLib.h> +#include <ConfidentialComputingGuestAttr.h> #include "Platform.h" @@ -342,4 +343,18 @@ AmdSevInitialize ( // Check and perform SEV-ES initialization if required. // AmdSevEsInitialize (); + + // + // Set the Confidential computing attr PCD to communicate which SEV + // technology is active. + // + if (MemEncryptSevSnpIsEnabled ()) { + PcdStatus = PcdSet64S (PcdConfidentialComputingGuestAttr, CCAttrAmdSevSnp); + } else if (MemEncryptSevEsIsEnabled ()) { + PcdStatus = PcdSet64S (PcdConfidentialComputingGuestAttr, CCAttrAmdSevEs); + } else { + PcdStatus = PcdSet64S (PcdConfidentialComputingGuestAttr, CCAttrAmdSev); + } + ASSERT_RETURN_ERROR (PcdStatus); + } -- 2.25.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#80905): https://edk2.groups.io/g/devel/message/80905 Mute This Topic: https://groups.io/mt/85749039/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-