[edk2-devel] [PATCH ovmf v3 5/5] OvmfPkf: Enable AMD SEV-ES DebugSwap for DXE

["Alexey Kardashevskiy via groups.io" <aik=amd.com@groups.io>]

This writes the feature bit into PcdConfidentialComputingGuestAttr
and enables DebugSwap for the DXE stage too.

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Michael Roth <michael.roth@amd.com>
Cc: Min Xu <min.m.xu@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Alexey Kardashevskiy <aik@amd.com>
---
 OvmfPkg/PlatformPei/AmdSev.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/OvmfPkg/PlatformPei/AmdSev.c b/OvmfPkg/PlatformPei/AmdSev.c
index e6724cf493a7..785872537728 100644
--- a/OvmfPkg/PlatformPei/AmdSev.c
+++ b/OvmfPkg/PlatformPei/AmdSev.c
@@ -434,6 +434,7 @@ AmdSevInitialize (
   )
 {
   UINT64         EncryptionMask;
+  UINT64         CCGuestAttr;
   RETURN_STATUS  PcdStatus;
 
   //
@@ -517,13 +518,19 @@ AmdSevInitialize (
   // technology is active.
   //
   if (MemEncryptSevSnpIsEnabled ()) {
-    PcdStatus = PcdSet64S (PcdConfidentialComputingGuestAttr, CCAttrAmdSevSnp);
+    CCGuestAttr = CCAttrAmdSevSnp;
   } else if (MemEncryptSevEsIsEnabled ()) {
-    PcdStatus = PcdSet64S (PcdConfidentialComputingGuestAttr, CCAttrAmdSevEs);
+    CCGuestAttr = CCAttrAmdSevEs;
   } else {
-    PcdStatus = PcdSet64S (PcdConfidentialComputingGuestAttr, CCAttrAmdSev);
+    CCGuestAttr = CCAttrAmdSev;
   }
 
+  if (MemEncryptSevEsDebugSwapIsEnabled ()) {
+    CCGuestAttr |= CCAttrFeatureAmdSevDebugSwap;
+  }
+
+  PcdStatus = PcdSet64S (PcdConfidentialComputingGuestAttr, CCGuestAttr);
+
   ASSERT_RETURN_ERROR (PcdStatus);
 }
 
-- 
2.44.0



-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#118518): https://edk2.groups.io/g/devel/message/118518
Mute This Topic: https://groups.io/mt/105863832/7686176
Group Owner: devel+owner@edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [rebecca@openfw.io]
-=-=-=-=-=-=-=-=-=-=-=-