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From: "Alexey Kardashevskiy" <aik@amd.com>
To: <devel@edk2.groups.io>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>,
	Jiewen Yao <jiewen.yao@intel.com>,
	Jordan Justen <jordan.l.justen@intel.com>,
	"Gerd Hoffmann" <kraxel@redhat.com>,
	Brijesh Singh <brijesh.singh@amd.com>,
	"Erdem Aktas" <erdemaktas@google.com>,
	James Bottomley <jejb@linux.ibm.com>, Min Xu <min.m.xu@intel.com>,
	Tom Lendacky <thomas.lendacky@amd.com>,
	"Alexey Kardashevskiy" <aik@amd.com>
Subject: [PATCH ovmf 5/5] OvmfPkf: Enable AMD SEV-ES DebugSwap for DXE
Date: Thu, 1 Dec 2022 13:35:21 +1100	[thread overview]
Message-ID: <20221201023521.10028-6-aik@amd.com> (raw)
In-Reply-To: <20221201023521.10028-1-aik@amd.com>

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

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 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


  parent reply	other threads:[~2022-12-01  2:38 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-12-01  2:35 [PATCH ovmf 0/5] Enable AMD SEV-ES DebugSwap Alexey Kardashevskiy
2022-12-01  2:35 ` [PATCH ovmf 1/5] MdePkg/Register/Amd: Define all bits from MSR_SEV_STATUS_REGISTER Alexey Kardashevskiy
2022-12-07  2:13   ` 回复: [edk2-devel] " gaoliming
2022-12-07 12:24     ` Alexey Kardashevskiy
2022-12-21  1:01       ` 回复: " gaoliming
2022-12-01  2:35 ` [PATCH ovmf 3/5] OvmfPkg: Add AMD SEV-ES DebugSwap feature support Alexey Kardashevskiy
2022-12-01  2:35 ` [PATCH ovmf 4/5] UefiCpuPkg: Add AMD SEV-ES features support Alexey Kardashevskiy
2022-12-01  2:35 ` Alexey Kardashevskiy [this message]
2022-12-01  5:36 ` [PATCH ovmf 2/5] MdePkg: Add AMD SEV features to PcdConfidentialComputingGuestAttr Alexey Kardashevskiy
     [not found] ` <20221201023521.10028-3-aik@amd.com>
2022-12-01 14:47   ` Subject: " Lendacky, Thomas
2022-12-02 12:26     ` Alexey Kardashevskiy
2022-12-02 12:59       ` Gerd Hoffmann

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