Index: C/VfrCompile/VfrError.cpp
===================================================================
--- C/VfrCompile/VfrError.cpp	(revision 2671)
+++ C/VfrCompile/VfrError.cpp	(working copy)
@@ -53,6 +53,7 @@
   { VFR_WARNING_DEFAULT_VALUE_REDEFINED, ": default value re-defined with different value"},
   { VFR_WARNING_STRING_TO_UINT_OVERFLOW, ": String to UINT* Overflow"},
   { VFR_WARNING_ACTION_WITH_TEXT_TWO, ": Action opcode should not have TextTwo part"},
+  { VFR_WARNING_OBSOLETED_FRAMEWORK_OPCODE, ": Not recommend to use obsoleted framework opcode"},
   { VFR_WARNING_CODEUNDEFINED, ": undefined Warning Code" }
 };
 
Index: C/VfrCompile/VfrError.h
===================================================================
--- C/VfrCompile/VfrError.h	(revision 2671)
+++ C/VfrCompile/VfrError.h	(working copy)
@@ -51,6 +51,7 @@
   VFR_WARNING_DEFAULT_VALUE_REDEFINED = 0,
   VFR_WARNING_STRING_TO_UINT_OVERFLOW,
   VFR_WARNING_ACTION_WITH_TEXT_TWO,
+  VFR_WARNING_OBSOLETED_FRAMEWORK_OPCODE,
   VFR_WARNING_CODEUNDEFINED
 } EFI_VFR_WARNING_CODE;
 
Index: C/VfrCompile/VfrSyntax.g
===================================================================
--- C/VfrCompile/VfrSyntax.g	(revision 2672)
+++ C/VfrCompile/VfrSyntax.g	(working copy)
@@ -1184,9 +1184,35 @@
     ReadOnlyFlag                                    << $Flags |= 0x01; >>
   | InteractiveFlag                                 << $Flags |= 0x04; >>
   | ResetRequiredFlag                               << $Flags |= 0x10; >>
-  | OptionOnlyFlag                                  << $Flags |= 0x80; >>
-  | NVAccessFlag
-  | LateCheckFlag
+  | O:OptionOnlyFlag                                << 
+                                                       if (mCompatibleMode) {
+                                                         $Flags |= 0x80;
+                                                       } else {
+                                                         gCVfrErrorHandle.HandleWarning (
+                                                            VFR_WARNING_OBSOLETED_FRAMEWORK_OPCODE,
+                                                            O->getLine(),
+                                                            O->getText()
+                                                            );
+                                                       }
+                                                    >>
+  | N:NVAccessFlag                                  << 
+                                                       if (!mCompatibleMode) {
+                                                          gCVfrErrorHandle.HandleWarning (
+                                                            VFR_WARNING_OBSOLETED_FRAMEWORK_OPCODE,
+                                                            N->getLine(),
+                                                            N->getText()
+                                                            );
+                                                       }
+                                                    >>
+  | L:LateCheckFlag                                 << 
+                                                       if (!mCompatibleMode) {
+                                                          gCVfrErrorHandle.HandleWarning (
+                                                            VFR_WARNING_OBSOLETED_FRAMEWORK_OPCODE,
+                                                            L->getLine(),
+                                                            L->getText()
+                                                            );
+                                                       }
+                                                    >>
   ;
 
 vfrStorageVarId[EFI_VARSTORE_INFO & Info, CHAR8 *&QuestVarIdStr, BOOLEAN CheckFlag = TRUE] :
@@ -1617,8 +1643,29 @@
   ;
 
 flagsField :
-  Number | InteractiveFlag | ManufacturingFlag | DefaultFlag |
-  NVAccessFlag | ResetRequiredFlag | LateCheckFlag
+  Number 
+  | InteractiveFlag 
+  | ManufacturingFlag 
+  | DefaultFlag 
+  | ResetRequiredFlag 
+  | N:NVAccessFlag                                     << 
+                                                          if (!mCompatibleMode) {
+                                                            gCVfrErrorHandle.HandleWarning (
+                                                              VFR_WARNING_OBSOLETED_FRAMEWORK_OPCODE,
+                                                              N->getLine(),
+                                                              N->getText()
+                                                              );
+                                                          }
+                                                       >>
+  | L:LateCheckFlag                                    << 
+                                                          if (!mCompatibleMode) {
+                                                            gCVfrErrorHandle.HandleWarning (
+                                                              VFR_WARNING_OBSOLETED_FRAMEWORK_OPCODE,
+                                                              L->getLine(),
+                                                              L->getText()
+                                                              );
+                                                          }
+                                                       >> 
   ;
 
 vfrStatementValue :
@@ -3042,11 +3089,31 @@
   | "OPTION_DEFAULT"                                   << $LFlags |= 0x10; >>
   | "OPTION_DEFAULT_MFG"                               << $LFlags |= 0x20; >>
   | InteractiveFlag                                    << $HFlags |= 0x04; >>
-  | NVAccessFlag                                       << $HFlags |= 0x08; >>
   | ResetRequiredFlag                                  << $HFlags |= 0x10; >>
-  | LateCheckFlag                                      << $HFlags |= 0x20; >>
   | ManufacturingFlag                                  << $LFlags |= 0x20; >>
   | DefaultFlag                                        << $LFlags |= 0x10; >>
+  | A:NVAccessFlag                                     << 
+                                                          if (mCompatibleMode) {
+                                                            $HFlags |= 0x08;
+                                                          } else {
+                                                            gCVfrErrorHandle.HandleWarning (
+                                                              VFR_WARNING_OBSOLETED_FRAMEWORK_OPCODE,
+                                                              A->getLine(),
+                                                              A->getText()
+                                                              );
+                                                          }
+                                                       >>
+  | L:LateCheckFlag                                    << 
+                                                          if (mCompatibleMode) {
+                                                            $HFlags |= 0x20;
+                                                          } else {
+                                                            gCVfrErrorHandle.HandleWarning (
+                                                              VFR_WARNING_OBSOLETED_FRAMEWORK_OPCODE,
+                                                              L->getLine(),
+                                                              L->getText()
+                                                              );
+                                                          }
+                                                       >>
   ;
 
 vfrStatementLabel :