MdePkg/Library/BaseCpuLib/Arm/CpuFlushTlb.S

   1 #------------------------------------------------------------------------------
   2 #
   3 # CpuFlushTlb() for ARM
   4 #
   5 # Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
   6 # Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
   7 # SPDX-License-Identifier: BSD-2-Clause-Patent
   8 #
   9 #------------------------------------------------------------------------------
  10
  11 .text
  12 .p2align 2
  13 GCC_ASM_EXPORT(CpuFlushTlb)
  14
  15 #/**
  16 #  Flushes all the Translation Lookaside Buffers(TLB) entries in a CPU.
  17 #
  18 #  Flushes all the Translation Lookaside Buffers(TLB) entries in a CPU.
  19 #
  20 #**/
  21 #VOID
  22 #EFIAPI
  23 #CpuFlushTlb (
  24 #  VOID
  25 #  )#
  26 #
  27 ASM_PFX(CpuFlushTlb):
  28     mov r0,#0
  29     mcr p15,0,r0,c8,c5,0        // Invalidate all the unlocked entried in TLB
  30     bx  LR