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diff --git a/ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.S b/ArmPkg/Library/ArmLib/Arm/ArmLibSupportV7.S
new file mode 100644
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+#------------------------------------------------------------------------------
+#
+# Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+# Copyright (c) 2011-2013, ARM Limited. All rights reserved.
+# 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>
+
+ASM_FUNC(ArmIsMpCore)
+  mrc     p15,0,R0,c0,c0,5
+  // Get Multiprocessing extension (bit31) & U bit (bit30)
+  and     R0, R0, #0xC0000000
+  // if (bit31 == 1) && (bit30 == 0) then the processor is part of a multiprocessor system
+  cmp     R0, #0x80000000
+  moveq   R0, #1
+  movne   R0, #0
+  bx      LR
+
+ASM_FUNC(ArmEnableAsynchronousAbort)
+  cpsie   a
+  isb
+  bx      LR
+
+ASM_FUNC(ArmDisableAsynchronousAbort)
+  cpsid   a
+  isb
+  bx      LR
+
+ASM_FUNC(ArmEnableIrq)
+  cpsie   i
+  isb
+  bx      LR
+
+ASM_FUNC(ArmDisableIrq)
+  cpsid   i
+  isb
+  bx      LR
+
+ASM_FUNC(ArmEnableFiq)
+  cpsie   f
+  isb
+  bx      LR
+
+ASM_FUNC(ArmDisableFiq)
+  cpsid   f
+  isb
+  bx      LR
+
+ASM_FUNC(ArmEnableInterrupts)
+  cpsie   if
+  isb
+  bx      LR
+
+ASM_FUNC(ArmDisableInterrupts)
+  cpsid   if
+  isb
+  bx      LR
+
+// UINT32
+// ReadCCSIDR (
+//   IN UINT32 CSSELR
+//   )
+ASM_FUNC(ReadCCSIDR)
+  mcr p15,2,r0,c0,c0,0   @ Write Cache Size Selection Register (CSSELR)
+  isb
+  mrc p15,1,r0,c0,c0,0   @ Read current CP15 Cache Size ID Register (CCSIDR)
+  bx  lr
+
+// UINT32
+// ReadCLIDR (
+//   IN UINT32 CSSELR
+//   )
+ASM_FUNC(ReadCLIDR)
+  mrc p15,1,r0,c0,c0,1 @ Read CP15 Cache Level ID Register
+  bx  lr
+
+ASM_FUNC(ArmReadNsacr)
+  mrc     p15, 0, r0, c1, c1, 2
+  bx      lr
+
+ASM_FUNC(ArmWriteNsacr)
+  mcr     p15, 0, r0, c1, c1, 2
+  bx      lr
+
+ASM_FUNCTION_REMOVE_IF_UNREFERENCED