ArmPkg/Library/ArmMmuLib/Arm/ArmMmuLibV7Support.asm

   1 //------------------------------------------------------------------------------
   2 //
   3 // Copyright (c) 2016, Linaro 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
  16
  17     INCLUDE AsmMacroExport.inc
  18
  19
  20 //------------------------------------------------------------------------------
  21
  22  RVCT_ASM_EXPORT ArmHasMpExtensions
  23   mrc     p15,0,R0,c0,c0,5
  24   // Get Multiprocessing extension (bit31)
  25   lsr     R0, R0, #31
  26   bx      LR
  27
  28  RVCT_ASM_EXPORT ArmReadIdMmfr0
  29   mrc    p15, 0, r0, c0, c1, 4     ; Read ID_MMFR0 Register
  30   bx     lr
  31
  32   END