1 files changed, 6 insertions, 0 deletions
diff --git a/MdeModulePkg/Include/Guid/SmmVariableCommon.h b/MdeModulePkg/Include/Guid/SmmVariableCommon.h
index 478fd05..a2daae8 100644
--- a/MdeModulePkg/Include/Guid/SmmVariableCommon.h
+++ b/MdeModulePkg/Include/Guid/SmmVariableCommon.h
@@ -60,6 +60,10 @@ typedef struct {
 // is gEfiSmmVariableProtocolGuid.
 //
 #define SMM_VARIABLE_FUNCTION_GET_STATISTICS          7
+//
+// The payload for this function is SMM_VARIABLE_COMMUNICATE_LOCK_VARIABLE
+//
+#define SMM_VARIABLE_FUNCTION_LOCK_VARIABLE           8
 
 ///
 /// Size of SMM communicate header, without including the payload.
@@ -101,4 +105,6 @@ typedef struct {
   UINT32          Attributes; 
 } SMM_VARIABLE_COMMUNICATE_QUERY_VARIABLE_INFO;
 
+typedef SMM_VARIABLE_COMMUNICATE_GET_NEXT_VARIABLE_NAME SMM_VARIABLE_COMMUNICATE_LOCK_VARIABLE;
+
 #endif // _SMM_VARIABLE_COMMON_H_
 \ No newline at end of file