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/module.h>
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17
  18 #include <asm/tlb.h>
  19 #include <asm/io.h>
  20
  21 #include <asm/mach/map.h>
  22
  23 #include <asm/arch/mux.h>
  24 #include <asm/arch/omapfb.h>
  25
  26 extern void omap_sram_init(void);
  27 extern int omap2_clk_init(void);
  28 extern void omap2_check_revision(void);
  29 extern void omap2_init_memory(void);
  30 extern void gpmc_init(void);
  31 extern void omapfb_reserve_sdram(void);
  32
  33 /*
  34  * The machine specific code may provide the extra mapping besides the
  35  * default mapping provided here.
  36  */
  37 static struct map_desc omap2_io_desc[] __initdata = {
  38         {
  39                 .virtual        = L3_24XX_VIRT,
  40                 .pfn            = __phys_to_pfn(L3_24XX_PHYS),
  41                 .length         = L3_24XX_SIZE,
  42                 .type           = MT_DEVICE
  43         },
  44         {
  45                 .virtual        = DSP_MEM_24XX_VIRT,
  46                 .pfn            = __phys_to_pfn(DSP_MEM_24XX_PHYS),
  47                 .length         = DSP_MEM_24XX_SIZE,
  48                 .type           = MT_DEVICE
  49         },
  50         {
  51                 .virtual        = DSP_IPI_24XX_VIRT,
  52                 .pfn            = __phys_to_pfn(DSP_IPI_24XX_PHYS),
  53                 .length         = DSP_IPI_24XX_SIZE,
  54                 .type           = MT_DEVICE
  55         },
  56         {
  57                 .virtual        = DSP_MMU_24XX_VIRT,
  58                 .pfn            = __phys_to_pfn(DSP_MMU_24XX_PHYS),
  59                 .length         = DSP_MMU_24XX_SIZE,
  60                 .type           = MT_DEVICE
  61         }
  62 };
  63
  64 void __init omap2_map_common_io(void)
  65 {
  66         iotable_init(omap2_io_desc, ARRAY_SIZE(omap2_io_desc));
  67
  68         /* Normally devicemaps_init() would flush caches and tlb after
  69          * mdesc->map_io(), but we must also do it here because of the CPU
  70          * revision check below.
  71          */
  72         local_flush_tlb_all();
  73         flush_cache_all();
  74
  75         omap2_check_revision();
  76         omap_sram_init();
  77         omapfb_reserve_sdram();
  78 }
  79
  80 void __init omap2_init_common_hw(void)
  81 {
  82         omap2_mux_init();
  83         omap2_clk_init();
  84         omap2_init_memory();
  85         gpmc_init();
  86 }