ArmPkg/Drivers/ArmCpuLib/ArmCortexA5xLib/AArch64/ArmCortexA5xHelper.S

   1 #------------------------------------------------------------------------------
   2 #
   3 # Copyright (c) 2013 - 2014, ARM Limited. All rights reserved.
   4 #
   5 # This program and the accompanying materials
   6 # are licensed and made available under the terms and conditions of the BSD License
   7 # which accompanies this distribution.  The full text of the license may be found at
   8 # http://opensource.org/licenses/bsd-license.php
   9 #
  10 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12 #
  13 #------------------------------------------------------------------------------
  14
  15 #include <AsmMacroIoLibV8.h>
  16
  17 ASM_FUNC(ArmReadCpuExCr)
  18   mrs   x0, S3_1_c15_c2_1
  19   ret
  20
  21 ASM_FUNC(ArmWriteCpuExCr)
  22   msr   S3_1_c15_c2_1, x0
  23   dsb   sy
  24   isb
  25   ret
  26
  27 ASM_FUNCTION_REMOVE_IF_UNREFERENCED