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 #include <linux/io.h>
  22
  23 #include <asm/tlb.h>
  24
  25 #include <asm/mach/map.h>
  26
  27 #include <mach/mux.h>
  28 #include <mach/omapfb.h>
  29 #include <mach/sram.h>
  30 #include <mach/sdrc.h>
  31 #include <mach/gpmc.h>
  32
  33 #include "clock.h"
  34
  35 #include <mach/powerdomain.h>
  36
  37 #include "powerdomains.h"
  38
  39 #include <mach/clockdomain.h>
  40 #include "clockdomains.h"
  41
  42 /*
  43  * The machine specific code may provide the extra mapping besides the
  44  * default mapping provided here.
  45  */
  46
  47 #ifdef CONFIG_ARCH_OMAP24XX
  48 static struct map_desc omap24xx_io_desc[] __initdata = {
  49         {
  50                 .virtual        = L3_24XX_VIRT,
  51                 .pfn            = __phys_to_pfn(L3_24XX_PHYS),
  52                 .length         = L3_24XX_SIZE,
  53                 .type           = MT_DEVICE
  54         },
  55         {
  56                 .virtual        = L4_24XX_VIRT,
  57                 .pfn            = __phys_to_pfn(L4_24XX_PHYS),
  58                 .length         = L4_24XX_SIZE,
  59                 .type           = MT_DEVICE
  60         },
  61 };
  62
  63 #ifdef CONFIG_ARCH_OMAP2420
  64 static struct map_desc omap242x_io_desc[] __initdata = {
  65         {
  66                 .virtual        = DSP_MEM_24XX_VIRT,
  67                 .pfn            = __phys_to_pfn(DSP_MEM_24XX_PHYS),
  68                 .length         = DSP_MEM_24XX_SIZE,
  69                 .type           = MT_DEVICE
  70         },
  71         {
  72                 .virtual        = DSP_IPI_24XX_VIRT,
  73                 .pfn            = __phys_to_pfn(DSP_IPI_24XX_PHYS),
  74                 .length         = DSP_IPI_24XX_SIZE,
  75                 .type           = MT_DEVICE
  76         },
  77         {
  78                 .virtual        = DSP_MMU_24XX_VIRT,
  79                 .pfn            = __phys_to_pfn(DSP_MMU_24XX_PHYS),
  80                 .length         = DSP_MMU_24XX_SIZE,
  81                 .type           = MT_DEVICE
  82         },
  83 };
  84
  85 #endif
  86
  87 #ifdef CONFIG_ARCH_OMAP2430
  88 static struct map_desc omap243x_io_desc[] __initdata = {
  89         {
  90                 .virtual        = L4_WK_243X_VIRT,
  91                 .pfn            = __phys_to_pfn(L4_WK_243X_PHYS),
  92                 .length         = L4_WK_243X_SIZE,
  93                 .type           = MT_DEVICE
  94         },
  95         {
  96                 .virtual        = OMAP243X_GPMC_VIRT,
  97                 .pfn            = __phys_to_pfn(OMAP243X_GPMC_PHYS),
  98                 .length         = OMAP243X_GPMC_SIZE,
  99                 .type           = MT_DEVICE
 100         },
 101         {
 102                 .virtual        = OMAP243X_SDRC_VIRT,
 103                 .pfn            = __phys_to_pfn(OMAP243X_SDRC_PHYS),
 104                 .length         = OMAP243X_SDRC_SIZE,
 105                 .type           = MT_DEVICE
 106         },
 107         {
 108                 .virtual        = OMAP243X_SMS_VIRT,
 109                 .pfn            = __phys_to_pfn(OMAP243X_SMS_PHYS),
 110                 .length         = OMAP243X_SMS_SIZE,
 111                 .type           = MT_DEVICE
 112         },
 113 };
 114 #endif
 115 #endif
 116
 117 #ifdef  CONFIG_ARCH_OMAP34XX
 118 static struct map_desc omap34xx_io_desc[] __initdata = {
 119         {
 120                 .virtual        = L3_34XX_VIRT,
 121                 .pfn            = __phys_to_pfn(L3_34XX_PHYS),
 122                 .length         = L3_34XX_SIZE,
 123                 .type           = MT_DEVICE
 124         },
 125         {
 126                 .virtual        = L4_34XX_VIRT,
 127                 .pfn            = __phys_to_pfn(L4_34XX_PHYS),
 128                 .length         = L4_34XX_SIZE,
 129                 .type           = MT_DEVICE
 130         },
 131         {
 132                 .virtual        = L4_WK_34XX_VIRT,
 133                 .pfn            = __phys_to_pfn(L4_WK_34XX_PHYS),
 134                 .length         = L4_WK_34XX_SIZE,
 135                 .type           = MT_DEVICE
 136         },
 137         {
 138                 .virtual        = OMAP34XX_GPMC_VIRT,
 139                 .pfn            = __phys_to_pfn(OMAP34XX_GPMC_PHYS),
 140                 .length         = OMAP34XX_GPMC_SIZE,
 141                 .type           = MT_DEVICE
 142         },
 143         {
 144                 .virtual        = OMAP343X_SMS_VIRT,
 145                 .pfn            = __phys_to_pfn(OMAP343X_SMS_PHYS),
 146                 .length         = OMAP343X_SMS_SIZE,
 147                 .type           = MT_DEVICE
 148         },
 149         {
 150                 .virtual        = OMAP343X_SDRC_VIRT,
 151                 .pfn            = __phys_to_pfn(OMAP343X_SDRC_PHYS),
 152                 .length         = OMAP343X_SDRC_SIZE,
 153                 .type           = MT_DEVICE
 154         },
 155         {
 156                 .virtual        = L4_PER_34XX_VIRT,
 157                 .pfn            = __phys_to_pfn(L4_PER_34XX_PHYS),
 158                 .length         = L4_PER_34XX_SIZE,
 159                 .type           = MT_DEVICE
 160         },
 161         {
 162                 .virtual        = L4_EMU_34XX_VIRT,
 163                 .pfn            = __phys_to_pfn(L4_EMU_34XX_PHYS),
 164                 .length         = L4_EMU_34XX_SIZE,
 165                 .type           = MT_DEVICE
 166         },
 167 };
 168 #endif
 169
 170 void __init omap2_map_common_io(void)
 171 {
 172 #if defined(CONFIG_ARCH_OMAP2420)
 173         iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc));
 174         iotable_init(omap242x_io_desc, ARRAY_SIZE(omap242x_io_desc));
 175 #endif
 176
 177 #if 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 #endif
 181
 182 #if defined(CONFIG_ARCH_OMAP34XX)
 183         iotable_init(omap34xx_io_desc, ARRAY_SIZE(omap34xx_io_desc));
 184 #endif
 185
 186         /* Normally devicemaps_init() would flush caches and tlb after
 187          * mdesc->map_io(), but we must also do it here because of the CPU
 188          * revision check below.
 189          */
 190         local_flush_tlb_all();
 191         flush_cache_all();
 192
 193         omap2_check_revision();
 194         omap_sram_init();
 195         omapfb_reserve_sdram();
 196 }
 197
 198 void __init omap2_init_common_hw(struct omap_sdrc_params *sp)
 199 {
 200         omap2_mux_init();
 201         pwrdm_init(powerdomains_omap);
 202         clkdm_init(clockdomains_omap, clkdm_pwrdm_autodeps);
 203         omap2_clk_init();
 204         omap2_sdrc_init(sp);
 205         gpmc_init();
 206 }