From 876ac39540251437b69809fbea4fc8ed3bee57ca Mon Sep 17 00:00:00 2001
From: sfu5 <sfu5@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Tue, 17 Jul 2012 08:21:42 +0000
Subject: Return EFI_UNSUPPORTED if READY_TO_BOOT function is invoked at SMM
 runtime.

Signed-off-by: Fu Siyuan <siyuan.fu@intel.com>
Reviewed-by: Dong Guo <guo.dong@intel.com>
Reviewed-by: Ye Ting <ting.ye@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13535 6f19259b-4bc3-4df7-8a09-765794883524
---
 MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'MdeModulePkg')

diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.c b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.c
index f11300b96a..0a6c872baa 100644
--- a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.c
+++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.c
@@ -513,6 +513,10 @@ SmmVariableHandler (
       break;
 
     case SMM_VARIABLE_FUNCTION_READY_TO_BOOT:
+      if (AtRuntime()) {
+        Status = EFI_UNSUPPORTED;
+        break;
+      }
       ReclaimForOS ();
       Status = EFI_SUCCESS;
       break;
-- 
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