[edk2-devel] [PATCH 11/16] UefiCpuPkg: Create APIC ID list PCD

["Lendacky, Thomas via groups.io" <thomas.lendacky=amd.com@groups.io>]

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4654

Create a PCD that can be used to set and get the APIC ID information that
is required for starting APs when an SVSM is present.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
---
 UefiCpuPkg/UefiCpuPkg.dec | 7 ++++++-
 UefiCpuPkg/UefiCpuPkg.uni | 3 +++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/UefiCpuPkg/UefiCpuPkg.dec b/UefiCpuPkg/UefiCpuPkg.dec
index 571b59b36f0a..5ffab58189d9 100644
--- a/UefiCpuPkg/UefiCpuPkg.dec
+++ b/UefiCpuPkg/UefiCpuPkg.dec
@@ -2,7 +2,7 @@
 # This Package provides UEFI compatible CPU modules and libraries.
 #
 # Copyright (c) 2007 - 2023, Intel Corporation. All rights reserved.<BR>
-# Copyright (C) 2023 Advanced Micro Devices, Inc. All rights reserved.<BR>
+# Copyright (C) 2023 - 2024, Advanced Micro Devices, Inc. All rights reserved.<BR>
 #
 # SPDX-License-Identifier: BSD-2-Clause-Patent
 #
@@ -477,5 +477,10 @@ [PcdsDynamic, PcdsDynamicEx]
   # @Prompt GHCB Hypervisor Features
   gUefiCpuPkgTokenSpaceGuid.PcdGhcbHypervisorFeatures|0x0|UINT64|0x60000018
 
+  ## This dynamic PCD contains the address of the APIC ID list obtained through the GHCB GET APIC IDS
+  #  VMGEXIT defined in the version 3 of GHCB spec.
+  # @Prompt SEV-ES CPU APIC ID List
+  gUefiCpuPkgTokenSpaceGuid.PcdSevSnpApicIds|0x0|UINT64|0x6000001A
+
 [UserExtensions.TianoCore."ExtraFiles"]
   UefiCpuPkgExtra.uni
diff --git a/UefiCpuPkg/UefiCpuPkg.uni b/UefiCpuPkg/UefiCpuPkg.uni
index d17bcfd10c7a..329255a0efd4 100644
--- a/UefiCpuPkg/UefiCpuPkg.uni
+++ b/UefiCpuPkg/UefiCpuPkg.uni
@@ -301,3 +301,6 @@
 #string STR_gUefiCpuPkgTokenSpaceGuid_PcdSevEsWorkAreaSize_PROMPT  #language en-US "Specify the size of the SEV-ES work area"
 
 #string STR_gUefiCpuPkgTokenSpaceGuid_PcdSevEsWorkAreaSize_HELP    #language en-US "Specifies the size of the work area used by an SEV-ES guest."
+
+#string STR_gUefiCpuPkgTokenSpaceGuid_PcdSevSnpApicIds_PROMPT      #language en-US "Specifies the address of the APIC ID list."
+#string STR_gUefiCpuPkgTokenSpaceGuid_PcdSevSnpApicIds_HELP        #language en-US "Set to the address of the APIC ID list retrieved from the hypervisor, zero if unavailable."
-- 
2.42.0



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