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  * Copyright (C) 2007 Texas Instruments
   8  *
   9  * Author:
  10  *      Juha Yrjola <juha.yrjola@nokia.com>
  11  *      Syed Khasim <x0khasim@ti.com>
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License version 2 as
  15  * published by the Free Software Foundation.
  16  */
  17
  18 #include <linux/module.h>
  19 #include <linux/kernel.h>
  20 #include <linux/init.h>
  21
  22 #include <asm/tlb.h>
  23 #include <asm/io.h>
  24
  25 #include <asm/mach/map.h>
  26
  27 #include <asm/arch/mux.h>
  28 #include <asm/arch/omapfb.h>
  29
  30 extern void omap_sram_init(void);
  31 extern int omap2_clk_init(void);
  32 extern void omap2_check_revision(void);
  33 extern void omap2_init_memory(void);
  34 extern void gpmc_init(void);
  35 extern void omapfb_reserve_sdram(void);
  36
  37 /*
  38  * The machine specific code may provide the extra mapping besides the
  39  * default mapping provided here.
  40  */
  41
  42 #ifdef CONFIG_ARCH_OMAP24XX
  43 static struct map_desc omap24xx_io_desc[] __initdata = {
  44         {
  45                 .virtual        = L3_24XX_VIRT,
  46                 .pfn            = __phys_to_pfn(L3_24XX_PHYS),
  47                 .length         = L3_24XX_SIZE,
  48                 .type           = MT_DEVICE
  49         },
  50         {
  51                 .virtual        = L4_24XX_VIRT,
  52                 .pfn            = __phys_to_pfn(L4_24XX_PHYS),
  53                 .length         = L4_24XX_SIZE,
  54                 .type           = MT_DEVICE
  55         },
  56 };
  57
  58 #ifdef CONFIG_ARCH_OMAP2420
  59 static struct map_desc omap242x_io_desc[] __initdata = {
  60         {
  61                 .virtual        = DSP_MEM_24XX_VIRT,
  62                 .pfn            = __phys_to_pfn(DSP_MEM_24XX_PHYS),
  63                 .length         = DSP_MEM_24XX_SIZE,
  64                 .type           = MT_DEVICE
  65         },
  66         {
  67                 .virtual        = DSP_IPI_24XX_VIRT,
  68                 .pfn            = __phys_to_pfn(DSP_IPI_24XX_PHYS),
  69                 .length         = DSP_IPI_24XX_SIZE,
  70                 .type           = MT_DEVICE
  71         },
  72         {
  73                 .virtual        = DSP_MMU_24XX_VIRT,
  74                 .pfn            = __phys_to_pfn(DSP_MMU_24XX_PHYS),
  75                 .length         = DSP_MMU_24XX_SIZE,
  76                 .type           = MT_DEVICE
  77         },
  78 };
  79
  80 #endif
  81
  82 #ifdef CONFIG_ARCH_OMAP2430
  83 static struct map_desc omap243x_io_desc[] __initdata = {
  84         {
  85                 .virtual        = L4_WK_243X_VIRT,
  86                 .pfn            = __phys_to_pfn(L4_WK_243X_PHYS),
  87                 .length         = L4_WK_243X_SIZE,
  88                 .type           = MT_DEVICE
  89         },
  90         {
  91                 .virtual        = OMAP243X_GPMC_VIRT,
  92                 .pfn            = __phys_to_pfn(OMAP243X_GPMC_PHYS),
  93                 .length         = OMAP243X_GPMC_SIZE,
  94                 .type           = MT_DEVICE
  95         },
  96         {
  97                 .virtual        = OMAP243X_SDRC_VIRT,
  98                 .pfn            = __phys_to_pfn(OMAP243X_SDRC_PHYS),
  99                 .length         = OMAP243X_SDRC_SIZE,
 100                 .type           = MT_DEVICE
 101         },
 102         {
 103                 .virtual        = OMAP243X_SMS_VIRT,
 104                 .pfn            = __phys_to_pfn(OMAP243X_SMS_PHYS),
 105                 .length         = OMAP243X_SMS_SIZE,
 106                 .type           = MT_DEVICE
 107         },
 108 };
 109 #endif
 110 #endif
 111
 112 #ifdef  CONFIG_ARCH_OMAP34XX
 113 static struct map_desc omap34xx_io_desc[] __initdata = {
 114         {
 115                 .virtual        = L3_34XX_VIRT,
 116                 .pfn            = __phys_to_pfn(L3_34XX_PHYS),
 117                 .length         = L3_34XX_SIZE,
 118                 .type           = MT_DEVICE
 119         },
 120         {
 121                 .virtual        = L4_34XX_VIRT,
 122                 .pfn            = __phys_to_pfn(L4_34XX_PHYS),
 123                 .length         = L4_34XX_SIZE,
 124                 .type           = MT_DEVICE
 125         },
 126         {
 127                 .virtual        = L4_WK_34XX_VIRT,
 128                 .pfn            = __phys_to_pfn(L4_WK_34XX_PHYS),
 129                 .length         = L4_WK_34XX_SIZE,
 130                 .type           = MT_DEVICE
 131         },
 132         {
 133                 .virtual        = OMAP34XX_GPMC_VIRT,
 134                 .pfn            = __phys_to_pfn(OMAP34XX_GPMC_PHYS),
 135                 .length         = OMAP34XX_GPMC_SIZE,
 136                 .type           = MT_DEVICE
 137         },
 138         {
 139                 .virtual        = OMAP343X_SMS_VIRT,
 140                 .pfn            = __phys_to_pfn(OMAP343X_SMS_PHYS),
 141                 .length         = OMAP343X_SMS_SIZE,
 142                 .type           = MT_DEVICE
 143         },
 144         {
 145                 .virtual        = OMAP343X_SDRC_VIRT,
 146                 .pfn            = __phys_to_pfn(OMAP343X_SDRC_PHYS),
 147                 .length         = OMAP343X_SDRC_SIZE,
 148                 .type           = MT_DEVICE
 149         },
 150         {
 151                 .virtual        = L4_PER_34XX_VIRT,
 152                 .pfn            = __phys_to_pfn(L4_PER_34XX_PHYS),
 153                 .length         = L4_PER_34XX_SIZE,
 154                 .type           = MT_DEVICE
 155         },
 156         {
 157                 .virtual        = L4_EMU_34XX_VIRT,
 158                 .pfn            = __phys_to_pfn(L4_EMU_34XX_PHYS),
 159                 .length         = L4_EMU_34XX_SIZE,
 160                 .type           = MT_DEVICE
 161         },
 162 };
 163 #endif
 164
 165 void __init omap2_map_common_io(void)
 166 {
 167 #if defined(CONFIG_ARCH_OMAP2420)
 168         iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc));
 169         iotable_init(omap242x_io_desc, ARRAY_SIZE(omap242x_io_desc));
 170 #elif defined(CONFIG_ARCH_OMAP2430)
 171         iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc));
 172         iotable_init(omap243x_io_desc, ARRAY_SIZE(omap243x_io_desc));
 173 #elif defined(CONFIG_ARCH_OMAP34XX)
 174         iotable_init(omap34xx_io_desc, ARRAY_SIZE(omap34xx_io_desc));
 175 #endif
 176         /* Normally devicemaps_init() would flush caches and tlb after
 177          * mdesc->map_io(), but we must also do it here because of the CPU
 178          * revision check below.
 179          */
 180         local_flush_tlb_all();
 181         flush_cache_all();
 182
 183         omap2_check_revision();
 184         omap_sram_init();
 185         omapfb_reserve_sdram();
 186 }
 187
 188 void __init omap2_init_common_hw(void)
 189 {
 190         omap2_mux_init();
 191         omap2_clk_init();
 192         omap2_init_memory();
 193         gpmc_init();
 194 }