arch/blackfin/mach-common/cache-c.c

   1 /*
   2  * Blackfin cache control code (simpler control-style functions)
   3  *
   4  * Copyright 2004-2008 Analog Devices Inc.
   5  *
   6  * Enter bugs at http://blackfin.uclinux.org/
   7  *
   8  * Licensed under the GPL-2 or later.
   9  */
  10
  11 #include <asm/blackfin.h>
  12
  13 /* Invalidate the Entire Data cache by
  14  * clearing DMC[1:0] bits
  15  */
  16 void blackfin_invalidate_entire_dcache(void)
  17 {
  18         u32 dmem = bfin_read_DMEM_CONTROL();
  19         bfin_write_DMEM_CONTROL(dmem & ~0xc);
  20         SSYNC();
  21         bfin_write_DMEM_CONTROL(dmem);
  22         SSYNC();
  23 }
  24
  25 /* Invalidate the Entire Instruction cache by
  26  * clearing IMC bit
  27  */
  28 void blackfin_invalidate_entire_icache(void)
  29 {
  30         u32 imem = bfin_read_IMEM_CONTROL();
  31         bfin_write_IMEM_CONTROL(imem & ~0x4);
  32         SSYNC();
  33         bfin_write_IMEM_CONTROL(imem);
  34         SSYNC();
  35 }
  36