1 files changed, 49 insertions, 0 deletions
diff --git a/OvmfPkg/SmmControl2Dxe/SmiFeatures.h b/OvmfPkg/SmmControl2Dxe/SmiFeatures.h
new file mode 100644
index 0000000000..9d5f1dbcb5
--- /dev/null
+++ b/OvmfPkg/SmmControl2Dxe/SmiFeatures.h
@@ -0,0 +1,49 @@
+/**@file
+  Negotiate SMI features with QEMU, and configure UefiCpuPkg/PiSmmCpuDxeSmm
+  accordingly.
+
+  Copyright (C) 2016-2017, Red Hat, Inc.
+
+  This program and the accompanying materials are licensed and made available
+  under the terms and conditions of the BSD License which accompanies this
+  distribution.  The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
+  WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+**/
+
+#ifndef __SMI_FEATURES_H__
+#define __SMI_FEATURES_H__
+
+#include <Protocol/S3SaveState.h>
+
+/**
+  Negotiate SMI features with QEMU.
+
+  @retval FALSE  If SMI feature negotiation is not supported by QEMU. This is
+                 not an error, it just means that SaveSmiFeatures() should not
+                 be called.
+
+  @retval TRUE   SMI feature negotiation is supported, and it has completed
+                 successfully as well. (Failure to negotiate is a fatal error
+                 and the function never returns in that case.)
+**/
+BOOLEAN
+NegotiateSmiFeatures (
+  VOID
+  );
+
+/**
+  Append a boot script fragment that will re-select the previously negotiated
+  SMI features during S3 resume.
+
+  @param[in] S3SaveState  The EFI_S3_SAVE_STATE_PROTOCOL instance to append to
+                          the S3 boot script with.
+**/
+VOID
+SaveSmiFeatures (
+  IN EFI_S3_SAVE_STATE_PROTOCOL *S3SaveState
+  );
+
+#endif