MdePkg/Library/BaseCpuLib/Arm/CpuSleep.asm

;------------------------------------------------------------------------------ 
;
; CpuSleep() for ARMv7
;
; ARMv6 versions was:
;    MOV r0,#0
;    MCR p15,0,r0,c7,c0,4   ;Wait for Interrupt instruction
;
; But this is a no-op on ARMv7
;
; Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
; Portions copyright (c) 2008 - 2011, Apple Inc. 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.
;
;------------------------------------------------------------------------------

  EXPORT CpuSleep
  AREA cpu_sleep, CODE, READONLY

;/**
;  Places the CPU in a sleep state until an interrupt is received.
;
;  Places the CPU in a sleep state until an interrupt is received. If interrupts
;  are disabled prior to calling this function, then the CPU will be placed in a
;  sleep state indefinitely.
;
;**/
;VOID
;EFIAPI
;CpuSleep (
;  VOID
;  );
;
CpuSleep
    WFI
    BX LR

  END