From 39099cbdcf8584a0ad3259eb3fdf330439679948 Mon Sep 17 00:00:00 2001
From: ydong10 <ydong10@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Mon, 10 Oct 2011 03:17:46 +0000
Subject: Enhance op-code EFI_IFR_TO_BOOLEAN to case insensitive.
 Signed-off-by: ydong10 Reviewed-by: lgao4

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12520 6f19259b-4bc3-4df7-8a09-765794883524
---
 MdeModulePkg/Universal/SetupBrowserDxe/Expression.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/MdeModulePkg/Universal/SetupBrowserDxe/Expression.c b/MdeModulePkg/Universal/SetupBrowserDxe/Expression.c
index cbbb20dc9f..60a23f1822 100644
--- a/MdeModulePkg/Universal/SetupBrowserDxe/Expression.c
+++ b/MdeModulePkg/Universal/SetupBrowserDxe/Expression.c
@@ -2034,18 +2034,23 @@ EvaluateExpression (
         //
         // When converting from a string, if case-insensitive compare
         // with "true" is True, then push True. If a case-insensitive compare
-        // with "false" is True, then push False.
+        // with "false" is True, then push False. Otherwise, push Undefined. 
         //
         StrPtr = GetToken (Value->Value.string, FormSet->HiiHandle);
         if (StrPtr == NULL) {
           Status = EFI_INVALID_PARAMETER;
           goto Done;
         }
-
-        if ((StrCmp (StrPtr, L"true") == 0) || (StrCmp (StrPtr, L"false") == 0)){
+        
+        IfrStrToUpper (StrPtr);
+        if (StrCmp (StrPtr, L"TRUE") == 0){
           Value->Value.b = TRUE;
-        } else {
+        } else if (StrCmp (StrPtr, L"FALSE") == 0) {
           Value->Value.b = FALSE;
+        } else {
+          Status = EFI_INVALID_PARAMETER;
+          FreePool (StrPtr);
+          goto Done;
         }
         FreePool (StrPtr);
         Value->Type = EFI_IFR_TYPE_BOOLEAN;
-- 
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