From a72e6fe7ab07e002f087b88caf776b3d73b5048a Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kraxel@redhat.com>
Date: Wed, 4 Jun 2025 12:32:05 +0200
Subject: [PATCH] UefiCpuPkg/AmdSvsmLib: add AmdSvsmQueryProtocol

AmdSvsmQueryProtocol() is a helper function for QUERY_PROTOCOL
calls of the core svsm protocol.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 UefiCpuPkg/Include/Library/AmdSvsmLib.h            |  9 +++++++++
 UefiCpuPkg/Library/AmdSvsmLibNull/AmdSvsmLibNull.c | 12 ++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/UefiCpuPkg/Include/Library/AmdSvsmLib.h b/UefiCpuPkg/Include/Library/AmdSvsmLib.h
index 693b79bda5..b84c0bb213 100644
--- a/UefiCpuPkg/Include/Library/AmdSvsmLib.h
+++ b/UefiCpuPkg/Include/Library/AmdSvsmLib.h
@@ -139,4 +139,13 @@ AmdSvsmVtpmCmd (
   IN OUT UINT8  *Buffer
   );
 
+BOOLEAN
+EFIAPI
+AmdSvsmQueryProtocol (
+  IN  UINT32  ProtocolId,
+  IN  UINT32  ProtocolVersion,
+  OUT UINT32  *ProtocolMin,
+  OUT UINT32  *ProtocolMax
+  );
+
 #endif
diff --git a/UefiCpuPkg/Library/AmdSvsmLibNull/AmdSvsmLibNull.c b/UefiCpuPkg/Library/AmdSvsmLibNull/AmdSvsmLibNull.c
index fc6871c7b2..990d6407cd 100644
--- a/UefiCpuPkg/Library/AmdSvsmLibNull/AmdSvsmLibNull.c
+++ b/UefiCpuPkg/Library/AmdSvsmLibNull/AmdSvsmLibNull.c
@@ -153,3 +153,15 @@ AmdSvsmVtpmCmd (
 {
   return FALSE;
 }
+
+BOOLEAN
+EFIAPI
+AmdSvsmQueryProtocol (
+  IN  UINT32  ProtocolId,
+  IN  UINT32  ProtocolVersion,
+  OUT UINT32  *ProtocolMin,
+  OUT UINT32  *ProtocolMax
+  )
+{
+  return FALSE;
+}