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

[Alexey Kardashevskiy via groups.io]

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

Signed-off-by: Alexey Kardashevskiy <aik at 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 e1b9fd9b7f68..479f898adff4 100644
--- a/OvmfPkg/PlatformPei/AmdSev.c
+++ b/OvmfPkg/PlatformPei/AmdSev.c
@@ -324,6 +324,7 @@ AmdSevInitialize (
   )
 {
   UINT64         EncryptionMask;
+  UINT64         CCGuestAttr;
   RETURN_STATUS  PcdStatus;
 
   //
@@ -407,13 +408,19 @@ 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 |= CCAttrAmdSevFeatureDebugSwap;
+  }
+
+  PcdStatus = PcdSet64S (PcdConfidentialComputingGuestAttr, CCGuestAttr);
+
   ASSERT_RETURN_ERROR (PcdStatus);
 }
 
-- 
2.38.1



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