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         {
  45                 .virtual        = L4_24XX_VIRT,
  46                 .pfn            = __phys_to_pfn(L4_24XX_PHYS),
  47                 .length         = L4_24XX_SIZE,
  48                 .type           = MT_DEVICE
  49         },
  50 #ifdef CONFIG_ARCH_OMAP2430
  51         {
  52                 .virtual        = L4_WK_243X_VIRT,
  53                 .pfn            = __phys_to_pfn(L4_WK_243X_PHYS),
  54                 .length         = L4_WK_243X_SIZE,
  55                 .type           = MT_DEVICE
  56         },
  57         {
  58                 .virtual        = OMAP243X_GPMC_VIRT,
  59                 .pfn            = __phys_to_pfn(OMAP243X_GPMC_PHYS),
  60                 .length         = OMAP243X_GPMC_SIZE,
  61                 .type           = MT_DEVICE
  62         },
  63 #endif
  64         {
  65                 .virtual        = DSP_MEM_24XX_VIRT,
  66                 .pfn            = __phys_to_pfn(DSP_MEM_24XX_PHYS),
  67                 .length         = DSP_MEM_24XX_SIZE,
  68                 .type           = MT_DEVICE
  69         },
  70         {
  71                 .virtual        = DSP_IPI_24XX_VIRT,
  72                 .pfn            = __phys_to_pfn(DSP_IPI_24XX_PHYS),
  73                 .length         = DSP_IPI_24XX_SIZE,
  74                 .type           = MT_DEVICE
  75         },
  76         {
  77                 .virtual        = DSP_MMU_24XX_VIRT,
  78                 .pfn            = __phys_to_pfn(DSP_MMU_24XX_PHYS),
  79                 .length         = DSP_MMU_24XX_SIZE,
  80                 .type           = MT_DEVICE
  81         }
  82 };
  83
  84 void __init omap2_map_common_io(void)
  85 {
  86         iotable_init(omap2_io_desc, ARRAY_SIZE(omap2_io_desc));
  87
  88         /* Normally devicemaps_init() would flush caches and tlb after
  89          * mdesc->map_io(), but we must also do it here because of the CPU
  90          * revision check below.
  91          */
  92         local_flush_tlb_all();
  93         flush_cache_all();
  94
  95         omap2_check_revision();
  96         omap_sram_init();
  97         omapfb_reserve_mem();
  98 }
  99
 100 void __init omap2_init_common_hw(void)
 101 {
 102         omap2_mux_init();
 103         omap2_clk_init();
 104 /*
 105  * Need to Fix this for 2430
 106  */
 107 #ifndef CONFIG_ARCH_OMAP2430
 108         omap2_init_memory();
 109 #endif
 110         gpmc_init();
 111 }