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  * Updated map desc to add 2430 support : <x0khasim@ti.com>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  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 extern void omap2_init_memory(void);
  31 extern void gpmc_init(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 #ifdef CONFIG_ARCH_OMAP2430
  45         {
  46                 .virtual        = L4_WK_243X_VIRT,
  47                 .pfn            = __phys_to_pfn(L4_WK_243X_PHYS),
  48                 .length         = L4_WK_243X_SIZE,
  49                 .type           = MT_DEVICE
  50         },
  51         {
  52                 .virtual        = OMAP243X_GPMC_VIRT,
  53                 .pfn            = __phys_to_pfn(OMAP243X_GPMC_PHYS),
  54                 .length         = OMAP243X_GPMC_SIZE,
  55                 .type           = MT_DEVICE
  56         },
  57 #endif
  58         {
  59                 .virtual        = L4_24XX_VIRT,
  60                 .pfn            = __phys_to_pfn(L4_24XX_PHYS),
  61                 .length         = L4_24XX_SIZE,
  62                 .type           = MT_DEVICE
  63         }
  64 };
  65
  66 void __init omap2_map_common_io(void)
  67 {
  68         iotable_init(omap2_io_desc, ARRAY_SIZE(omap2_io_desc));
  69
  70         /* Normally devicemaps_init() would flush caches and tlb after
  71          * mdesc->map_io(), but we must also do it here because of the CPU
  72          * revision check below.
  73          */
  74         local_flush_tlb_all();
  75         flush_cache_all();
  76
  77         omap2_check_revision();
  78         omap_sram_init();
  79         omapfb_reserve_mem();
  80 }
  81
  82 void __init omap2_init_common_hw(void)
  83 {
  84         omap2_mux_init();
  85         omap2_clk_init();
  86 /*
  87  * Need to Fix this for 2430
  88  */
  89 #ifndef CONFIG_ARCH_OMAP2430
  90         omap2_init_memory();
  91 #endif
  92         gpmc_init();
  93 }