arch/arm/mach-omap2/io.c

   1 /*
   2  * linux/arch/arm/mach-omap2/io.c
   3  *
   4  * OMAP2 I/O mapping code
   5  *
   6  * Copyright (C) 2005 Nokia Corporation
   7  * Author: Juha Yrjölä <juha.yrjola@nokia.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13
  14 #include <linux/config.h>
  15 #include <linux/module.h>
  16 #include <linux/kernel.h>
  17 #include <linux/init.h>
  18
  19 #include <asm/tlb.h>
  20 #include <asm/io.h>
  21
  22 #include <asm/mach/map.h>
  23
  24 #include <asm/arch/mux.h>
  25 #include <asm/arch/omapfb.h>
  26
  27 extern void omap_sram_init(void);
  28 extern int omap2_clk_init(void);
  29 extern void omap2_check_revision(void);
  30
  31 /*
  32  * The machine specific code may provide the extra mapping besides the
  33  * default mapping provided here.
  34  */
  35 static struct map_desc omap2_io_desc[] __initdata = {
  36         {
  37                 .virtual        = L3_24XX_VIRT,
  38                 .pfn            = __phys_to_pfn(L3_24XX_PHYS),
  39                 .length         = L3_24XX_SIZE,
  40                 .type           = MT_DEVICE
  41         },
  42         {
  43                 .virtual        = L4_24XX_VIRT,
  44                 .pfn            = __phys_to_pfn(L4_24XX_PHYS),
  45                 .length         = L4_24XX_SIZE,
  46                 .type           = MT_DEVICE
  47         }
  48 };
  49
  50 void __init omap2_map_common_io(void)
  51 {
  52         iotable_init(omap2_io_desc, ARRAY_SIZE(omap2_io_desc));
  53
  54         /* Normally devicemaps_init() would flush caches and tlb after
  55          * mdesc->map_io(), but we must also do it here because of the CPU
  56          * revision check below.
  57          */
  58         local_flush_tlb_all();
  59         flush_cache_all();
  60
  61         omap2_check_revision();
  62         omap_sram_init();
  63         omapfb_reserve_mem();
  64 }
  65
  66 void __init omap2_init_common_hw(void)
  67 {
  68         omap2_mux_init();
  69         omap2_clk_init();
  70 }