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-rw-r--r--ArmPkg/Library/ArmMmuLib/Arm/ArmMmuLibV7Support.S35
1 files changed, 35 insertions, 0 deletions
diff --git a/ArmPkg/Library/ArmMmuLib/Arm/ArmMmuLibV7Support.S b/ArmPkg/Library/ArmMmuLib/Arm/ArmMmuLibV7Support.S
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index 0000000000..c89ee5e40b
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+++ b/ArmPkg/Library/ArmMmuLib/Arm/ArmMmuLibV7Support.S
@@ -0,0 +1,35 @@
+#------------------------------------------------------------------------------
+#
+# Copyright (c) 2016, Linaro Limited. All rights reserved.
+#
+# This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution. The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+#------------------------------------------------------------------------------
+
+#include <AsmMacroIoLib.h>
+
+.text
+.align 2
+
+GCC_ASM_EXPORT (ArmReadIdMmfr0)
+GCC_ASM_EXPORT (ArmHasMpExtensions)
+
+#------------------------------------------------------------------------------
+
+ASM_PFX (ArmHasMpExtensions):
+ mrc p15,0,R0,c0,c0,5
+ // Get Multiprocessing extension (bit31)
+ lsr R0, R0, #31
+ bx LR
+
+ASM_PFX(ArmReadIdMmfr0):
+ mrc p15, 0, r0, c0, c1, 4 @ Read ID_MMFR0 Register
+ bx lr
+
+ASM_FUNCTION_REMOVE_IF_UNREFERENCED