arch/mn10300/mm/cache-dbg-inv.S

   1 /* MN10300 CPU cache invalidation routines
   2  *
   3  * Copyright (C) 2011 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public Licence
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the Licence, or (at your option) any later version.
  10  */
  11 #include <linux/sys.h>
  12 #include <linux/linkage.h>
  13 #include <asm/smp.h>
  14 #include <asm/page.h>
  15 #include <asm/cache.h>
  16 #include <asm/irqflags.h>
  17 #include <asm/cacheflush.h>
  18 #include "cache.inc"
  19
  20         .am33_2
  21
  22         .globl  debugger_local_cache_flushinv
  23
  24 ###############################################################################
  25 #
  26 # void debugger_local_cache_flushinv(void)
  27 #
  28 # Invalidate the entire icache
  29 #
  30 ###############################################################################
  31         ALIGN
  32         .globl  debugger_local_cache_flushinv
  33         .type   debugger_local_cache_flushinv,@function
  34 debugger_local_cache_flushinv:
  35         #
  36         # we only need to invalidate the icache in this cache mode
  37         #
  38         mov     CHCTR,a0
  39         movhu   (a0),d0
  40         btst    CHCTR_ICEN,d0
  41         beq     debugger_local_cache_flushinv_end
  42
  43         invalidate_icache 1
  44
  45 debugger_local_cache_flushinv_end:
  46         ret     [],0
  47         .size   debugger_local_cache_flushinv,.-debugger_local_cache_flushinv