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 Yrjola<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 extern void omapfb_reserve_sdram(void);
  33
  34 /*
  35  * The machine specific code may provide the extra mapping besides the
  36  * default mapping provided here.
  37  */
  38 static struct map_desc omap2_io_desc[] __initdata = {
  39         {
  40                 .virtual        = L3_24XX_VIRT,
  41                 .pfn            = __phys_to_pfn(L3_24XX_PHYS),
  42                 .length         = L3_24XX_SIZE,
  43                 .type           = MT_DEVICE
  44         },
  45         {
  46                 .virtual        = L4_24XX_VIRT,
  47                 .pfn            = __phys_to_pfn(L4_24XX_PHYS),
  48                 .length         = L4_24XX_SIZE,
  49                 .type           = MT_DEVICE
  50         },
  51 #ifdef CONFIG_ARCH_OMAP2430
  52         {
  53                 .virtual        = L4_WK_243X_VIRT,
  54                 .pfn            = __phys_to_pfn(L4_WK_243X_PHYS),
  55                 .length         = L4_WK_243X_SIZE,
  56                 .type           = MT_DEVICE
  57         },
  58         {
  59                 .virtual        = OMAP243X_GPMC_VIRT,
  60                 .pfn            = __phys_to_pfn(OMAP243X_GPMC_PHYS),
  61                 .length         = OMAP243X_GPMC_SIZE,
  62                 .type           = MT_DEVICE
  63         },
  64         {
  65                 .virtual        = OMAP243X_SDRC_VIRT,
  66                 .pfn            = __phys_to_pfn(OMAP243X_SDRC_PHYS),
  67                 .length         = OMAP243X_SDRC_SIZE,
  68                 .type           = MT_DEVICE
  69         },
  70         {
  71                 .virtual        = OMAP243X_SMS_VIRT,
  72                 .pfn            = __phys_to_pfn(OMAP243X_SMS_PHYS),
  73                 .length         = OMAP243X_SMS_SIZE,
  74                 .type           = MT_DEVICE
  75         },
  76 #endif
  77         {
  78                 .virtual        = DSP_MEM_24XX_VIRT,
  79                 .pfn            = __phys_to_pfn(DSP_MEM_24XX_PHYS),
  80                 .length         = DSP_MEM_24XX_SIZE,
  81                 .type           = MT_DEVICE
  82         },
  83 #ifdef CONFIG_ARCH_OMAP2420
  84         {
  85                 .virtual        = DSP_IPI_24XX_VIRT,
  86                 .pfn            = __phys_to_pfn(DSP_IPI_24XX_PHYS),
  87                 .length         = DSP_IPI_24XX_SIZE,
  88                 .type           = MT_DEVICE
  89         },
  90 #endif
  91         {
  92                 .virtual        = DSP_MMU_24XX_VIRT,
  93                 .pfn            = __phys_to_pfn(DSP_MMU_24XX_PHYS),
  94                 .length         = DSP_MMU_24XX_SIZE,
  95                 .type           = MT_DEVICE
  96         },
  97 };
  98
  99 void __init omap2_map_common_io(void)
 100 {
 101         iotable_init(omap2_io_desc, ARRAY_SIZE(omap2_io_desc));
 102
 103         /* Normally devicemaps_init() would flush caches and tlb after
 104          * mdesc->map_io(), but we must also do it here because of the CPU
 105          * revision check below.
 106          */
 107         local_flush_tlb_all();
 108         flush_cache_all();
 109
 110         omap2_check_revision();
 111         omap_sram_init();
 112         omapfb_reserve_sdram();
 113 }
 114
 115 void __init omap2_init_common_hw(void)
 116 {
 117         omap2_mux_init();
 118         omap2_clk_init();
 119         omap2_init_memory();
 120         gpmc_init();
 121 }