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 31 #include "memory.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(void) 199 { 200 omap2_mux_init(); 201 pwrdm_init(powerdomains_omap); 202 clkdm_init(clockdomains_omap, clkdm_pwrdm_autodeps); 203 omap2_clk_init(); 204 omap2_init_memory(); 205 gpmc_init(); 206 } 207