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 #include <asm/arch/powerdomain.h>
  31
  32 #include "powerdomains.h"
  33
  34 #include <asm/arch/clockdomain.h>
  35 #include "clockdomains.h"
  36
  37 extern void omap_sram_init(void);
  38 extern int omap2_clk_init(void);
  39 extern void omap2_check_revision(void);
  40 extern void omap2_init_memory(void);
  41 extern void gpmc_init(void);
  42 extern void omapfb_reserve_sdram(void);
  43
  44 /*
  45  * The machine specific code may provide the extra mapping besides the
  46  * default mapping provided here.
  47  */
  48
  49 #ifdef CONFIG_ARCH_OMAP24XX
  50 static struct map_desc omap24xx_io_desc[] __initdata = {
  51         {
  52                 .virtual        = L3_24XX_VIRT,
  53                 .pfn            = __phys_to_pfn(L3_24XX_PHYS),
  54                 .length         = L3_24XX_SIZE,
  55                 .type           = MT_DEVICE
  56         },
  57         {
  58                 .virtual        = L4_24XX_VIRT,
  59                 .pfn            = __phys_to_pfn(L4_24XX_PHYS),
  60                 .length         = L4_24XX_SIZE,
  61                 .type           = MT_DEVICE
  62         },
  63 };
  64
  65 #ifdef CONFIG_ARCH_OMAP2420
  66 static struct map_desc omap242x_io_desc[] __initdata = {
  67         {
  68                 .virtual        = DSP_MEM_24XX_VIRT,
  69                 .pfn            = __phys_to_pfn(DSP_MEM_24XX_PHYS),
  70                 .length         = DSP_MEM_24XX_SIZE,
  71                 .type           = MT_DEVICE
  72         },
  73         {
  74                 .virtual        = DSP_IPI_24XX_VIRT,
  75                 .pfn            = __phys_to_pfn(DSP_IPI_24XX_PHYS),
  76                 .length         = DSP_IPI_24XX_SIZE,
  77                 .type           = MT_DEVICE
  78         },
  79         {
  80                 .virtual        = DSP_MMU_24XX_VIRT,
  81                 .pfn            = __phys_to_pfn(DSP_MMU_24XX_PHYS),
  82                 .length         = DSP_MMU_24XX_SIZE,
  83                 .type           = MT_DEVICE
  84         },
  85 };
  86
  87 #endif
  88
  89 #ifdef CONFIG_ARCH_OMAP2430
  90 static struct map_desc omap243x_io_desc[] __initdata = {
  91         {
  92                 .virtual        = L4_WK_243X_VIRT,
  93                 .pfn            = __phys_to_pfn(L4_WK_243X_PHYS),
  94                 .length         = L4_WK_243X_SIZE,
  95                 .type           = MT_DEVICE
  96         },
  97         {
  98                 .virtual        = OMAP243X_GPMC_VIRT,
  99                 .pfn            = __phys_to_pfn(OMAP243X_GPMC_PHYS),
 100                 .length         = OMAP243X_GPMC_SIZE,
 101                 .type           = MT_DEVICE
 102         },
 103         {
 104                 .virtual        = OMAP243X_SDRC_VIRT,
 105                 .pfn            = __phys_to_pfn(OMAP243X_SDRC_PHYS),
 106                 .length         = OMAP243X_SDRC_SIZE,
 107                 .type           = MT_DEVICE
 108         },
 109         {
 110                 .virtual        = OMAP243X_SMS_VIRT,
 111                 .pfn            = __phys_to_pfn(OMAP243X_SMS_PHYS),
 112                 .length         = OMAP243X_SMS_SIZE,
 113                 .type           = MT_DEVICE
 114         },
 115 };
 116 #endif
 117 #endif
 118
 119 #ifdef  CONFIG_ARCH_OMAP34XX
 120 static struct map_desc omap34xx_io_desc[] __initdata = {
 121         {
 122                 .virtual        = L3_34XX_VIRT,
 123                 .pfn            = __phys_to_pfn(L3_34XX_PHYS),
 124                 .length         = L3_34XX_SIZE,
 125                 .type           = MT_DEVICE
 126         },
 127         {
 128                 .virtual        = L4_34XX_VIRT,
 129                 .pfn            = __phys_to_pfn(L4_34XX_PHYS),
 130                 .length         = L4_34XX_SIZE,
 131                 .type           = MT_DEVICE
 132         },
 133         {
 134                 .virtual        = L4_WK_34XX_VIRT,
 135                 .pfn            = __phys_to_pfn(L4_WK_34XX_PHYS),
 136                 .length         = L4_WK_34XX_SIZE,
 137                 .type           = MT_DEVICE
 138         },
 139         {
 140                 .virtual        = OMAP34XX_GPMC_VIRT,
 141                 .pfn            = __phys_to_pfn(OMAP34XX_GPMC_PHYS),
 142                 .length         = OMAP34XX_GPMC_SIZE,
 143                 .type           = MT_DEVICE
 144         },
 145         {
 146                 .virtual        = OMAP343X_SMS_VIRT,
 147                 .pfn            = __phys_to_pfn(OMAP343X_SMS_PHYS),
 148                 .length         = OMAP343X_SMS_SIZE,
 149                 .type           = MT_DEVICE
 150         },
 151         {
 152                 .virtual        = OMAP343X_SDRC_VIRT,
 153                 .pfn            = __phys_to_pfn(OMAP343X_SDRC_PHYS),
 154                 .length         = OMAP343X_SDRC_SIZE,
 155                 .type           = MT_DEVICE
 156         },
 157         {
 158                 .virtual        = L4_PER_34XX_VIRT,
 159                 .pfn            = __phys_to_pfn(L4_PER_34XX_PHYS),
 160                 .length         = L4_PER_34XX_SIZE,
 161                 .type           = MT_DEVICE
 162         },
 163         {
 164                 .virtual        = L4_EMU_34XX_VIRT,
 165                 .pfn            = __phys_to_pfn(L4_EMU_34XX_PHYS),
 166                 .length         = L4_EMU_34XX_SIZE,
 167                 .type           = MT_DEVICE
 168         },
 169 };
 170 #endif
 171
 172 void __init omap2_map_common_io(void)
 173 {
 174 #if defined(CONFIG_ARCH_OMAP2420)
 175         iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc));
 176         iotable_init(omap242x_io_desc, ARRAY_SIZE(omap242x_io_desc));
 177 #elif defined(CONFIG_ARCH_OMAP2430)
 178         iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc));
 179         iotable_init(omap243x_io_desc, ARRAY_SIZE(omap243x_io_desc));
 180 #elif defined(CONFIG_ARCH_OMAP34XX)
 181         iotable_init(omap34xx_io_desc, ARRAY_SIZE(omap34xx_io_desc));
 182 #endif
 183         /* Normally devicemaps_init() would flush caches and tlb after
 184          * mdesc->map_io(), but we must also do it here because of the CPU
 185          * revision check below.
 186          */
 187         local_flush_tlb_all();
 188         flush_cache_all();
 189
 190         omap2_check_revision();
 191         omap_sram_init();
 192         omapfb_reserve_sdram();
 193 }
 194
 195 void __init omap2_init_common_hw(void)
 196 {
 197         omap2_mux_init();
 198         pwrdm_init(powerdomains_omap);
 199         clkdm_init(clockdomains_omap, clkdm_pwrdm_autodeps);
 200         omap2_clk_init();
 201         omap2_init_memory();
 202         gpmc_init();
 203 }