[edk2-devel] [PATCH ovmf v3 2/5] MdePkg: Add AMD SEV features to PcdConfidentialComputingGuestAttr

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

PcdConfidentialComputingGuestAttr so far only contained an SEV mode bit
but there are more other features which do not translate to levels
such as DebugSwap or SecureTsc.

This adds the features mask and the DebugSwap feature bit to a PCD.

Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Alexey Kardashevskiy <aik@amd.com>
---
Changes:
v2:
* expanded features mask
* added type mask
---
 MdePkg/Include/ConfidentialComputingGuestAttr.h | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/MdePkg/Include/ConfidentialComputingGuestAttr.h b/MdePkg/Include/ConfidentialComputingGuestAttr.h
index 44e6df800207..c3a3dfb393f0 100644
--- a/MdePkg/Include/ConfidentialComputingGuestAttr.h
+++ b/MdePkg/Include/ConfidentialComputingGuestAttr.h
@@ -29,9 +29,20 @@ typedef enum {
 
   /* The guest is running with Intel TDX memory encryption enabled. */
   CCAttrIntelTdx = 0x200,
+
+  CCAttrTypeMask = 0x000000000000ffff,
+
+  /* Features */
+
+  /* The AMD SEV-ES DebugSwap feature is enabled in SEV_STATUS */
+  CCAttrFeatureAmdSevDebugSwap = 0x0000000000010000,
+
+  CCAttrFeatureMask = 0xffffffffffff0000,
 } CONFIDENTIAL_COMPUTING_GUEST_ATTR;
 
-#define CC_GUEST_IS_TDX(x)  ((x) == CCAttrIntelTdx)
-#define CC_GUEST_IS_SEV(x)  ((x) == CCAttrAmdSev || (x) == CCAttrAmdSevEs || (x) == CCAttrAmdSevSnp)
+#define _CC_GUEST_IS_TDX(x)  ((x) == CCAttrIntelTdx)
+#define CC_GUEST_IS_TDX(x)   _CC_GUEST_IS_TDX((x) & CCAttrTypeMask)
+#define _CC_GUEST_IS_SEV(x)  ((x) == CCAttrAmdSev || (x) == CCAttrAmdSevEs || (x) == CCAttrAmdSevSnp)
+#define CC_GUEST_IS_SEV(x)   _CC_GUEST_IS_SEV((x) & CCAttrTypeMask)
 
 #endif
-- 
2.44.0



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