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diff --git a/ArmPkg/Include/Library/ArmV7ArchTimerLib.h b/ArmPkg/Include/Library/ArmV7ArchTimerLib.h
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+/** @file
+
+ Copyright (c) 2011, 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
+ 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.
+
+**/
+
+#ifndef __ARM_V7_ARCH_TIMER_LIB_H__
+#define __ARM_V7_ARCH_TIMER_LIB_H__
+
+#define ARM_ARCH_TIMER_ENABLE (1 << 0)
+#define ARM_ARCH_TIMER_IMASK (1 << 1)
+#define ARM_ARCH_TIMER_ISTATUS (1 << 2)
+
+typedef enum {
+ CntFrq = 0,
+ CntPct,
+ CntkCtl,
+ CntpTval,
+ CntpCtl,
+ CntvTval,
+ CntvCtl,
+ CntvCt,
+ CntpCval,
+ CntvCval,
+ CntvOff,
+ CnthCtl,
+ CnthpTval,
+ CnthpCtl,
+ CnthpCval,
+ RegMaximum
+}ARM_ARCH_TIMER_REGS;
+
+VOID
+EFIAPI
+ArmArchTimerReadReg (
+ IN ARM_ARCH_TIMER_REGS Reg,
+ OUT VOID *DstBuf
+ );
+
+VOID
+EFIAPI
+ArmArchTimerWriteReg (
+ IN ARM_ARCH_TIMER_REGS Reg,
+ IN VOID *SrcBuf
+ );
+
+VOID
+EFIAPI
+ArmArchTimerEnableTimer (
+ VOID
+ );
+
+VOID
+EFIAPI
+ArmArchTimerDisableTimer (
+ VOID
+ );
+
+VOID
+EFIAPI
+ArmArchTimerSetTimerFreq (
+ IN UINTN FreqInHz
+ );
+
+UINTN
+EFIAPI
+ArmArchTimerGetTimerFreq (
+ VOID
+ );
+
+VOID
+EFIAPI
+ArmArchTimerSetTimerVal (
+ IN UINTN Val
+ );
+
+UINTN
+EFIAPI
+ArmArchTimerGetTimerVal (
+ VOID
+ );
+
+UINT64
+EFIAPI
+ArmArchTimerGetSystemCount (
+ VOID
+ );
+
+UINTN
+EFIAPI
+ArmArchTimerGetTimerCtrlReg (
+ VOID
+ );
+
+VOID
+EFIAPI
+ArmArchTimerSetTimerCtrlReg (
+ UINTN Val
+ );
+
+VOID
+EFIAPI
+ArmArchTimerSetCompareVal (
+ IN UINT64 Val
+ );
+
+#endif // __ARM_V7_ARCH_TIMER_LIB_H__