1 files changed, 11 insertions, 0 deletions
diff --git a/ArmPkg/Library/ArmLib/Common/ArmLib.c b/ArmPkg/Library/ArmLib/Common/ArmLib.c
index ae1b785608..a7b9551ba1 100644
--- a/ArmPkg/Library/ArmLib/Common/ArmLib.c
+++ b/ArmPkg/Library/ArmLib/Common/ArmLib.c
@@ -1,6 +1,7 @@
 /** @file
 
   Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+  Copyright (c) 2011 - 2012, ARM Ltd. All rights reserved.<BR>
   
   This program and the accompanying materials
   are licensed and made available under the terms and conditions of the BSD License
@@ -70,3 +71,13 @@ ArmSetAuxCrBit (
   ArmWriteAuxCr(val);
 }
 
+VOID
+EFIAPI
+ArmUnsetAuxCrBit (
+  IN  UINT32    Bits
+  )
+{
+  UINT32 val = ArmReadAuxCr();
+  val &= ~Bits;
+  ArmWriteAuxCr(val);
+}