arch/arm/mach-s5pc100/common.c

   1 /*
   2  * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
   3  *              http://www.samsung.com
   4  *
   5  * Copyright 2009 Samsung Electronics Co.
   6  *      Byungho Min <bhmin@samsung.com>
   7  *
   8  * Common Codes for S5PC100
   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/kernel.h>
  16 #include <linux/types.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/list.h>
  19 #include <linux/timer.h>
  20 #include <linux/init.h>
  21 #include <linux/clk.h>
  22 #include <linux/io.h>
  23 #include <linux/device.h>
  24 #include <linux/serial_core.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/sched.h>
  27 #include <linux/reboot.h>
  28
  29 #include <asm/irq.h>
  30 #include <asm/proc-fns.h>
  31 #include <asm/system_misc.h>
  32 #include <asm/mach/arch.h>
  33 #include <asm/mach/map.h>
  34 #include <asm/mach/irq.h>
  35
  36 #include <mach/map.h>
  37 #include <mach/hardware.h>
  38 #include <mach/regs-clock.h>
  39
  40 #include <plat/cpu.h>
  41 #include <plat/devs.h>
  42 #include <plat/clock.h>
  43 #include <plat/sdhci.h>
  44 #include <plat/adc-core.h>
  45 #include <plat/ata-core.h>
  46 #include <plat/fb-core.h>
  47 #include <plat/iic-core.h>
  48 #include <plat/onenand-core.h>
  49 #include <plat/spi-core.h>
  50 #include <plat/regs-serial.h>
  51 #include <plat/watchdog-reset.h>
  52
  53 #include "common.h"
  54
  55 static const char name_s5pc100[] = "S5PC100";
  56
  57 static struct cpu_table cpu_ids[] __initdata = {
  58         {
  59                 .idcode         = S5PC100_CPU_ID,
  60                 .idmask         = S5PC100_CPU_MASK,
  61                 .map_io         = s5pc100_map_io,
  62                 .init_clocks    = s5pc100_init_clocks,
  63                 .init_uarts     = s5pc100_init_uarts,
  64                 .init           = s5pc100_init,
  65                 .name           = name_s5pc100,
  66         },
  67 };
  68
  69 /* Initial IO mappings */
  70
  71 static struct map_desc s5pc100_iodesc[] __initdata = {
  72         {
  73                 .virtual        = (unsigned long)S5P_VA_CHIPID,
  74                 .pfn            = __phys_to_pfn(S5PC100_PA_CHIPID),
  75                 .length         = SZ_4K,
  76                 .type           = MT_DEVICE,
  77         }, {
  78                 .virtual        = (unsigned long)S3C_VA_SYS,
  79                 .pfn            = __phys_to_pfn(S5PC100_PA_SYSCON),
  80                 .length         = SZ_64K,
  81                 .type           = MT_DEVICE,
  82         }, {
  83                 .virtual        = (unsigned long)S3C_VA_TIMER,
  84                 .pfn            = __phys_to_pfn(S5PC100_PA_TIMER),
  85                 .length         = SZ_16K,
  86                 .type           = MT_DEVICE,
  87         }, {
  88                 .virtual        = (unsigned long)S3C_VA_WATCHDOG,
  89                 .pfn            = __phys_to_pfn(S5PC100_PA_WATCHDOG),
  90                 .length         = SZ_4K,
  91                 .type           = MT_DEVICE,
  92         }, {
  93                 .virtual        = (unsigned long)S5P_VA_SROMC,
  94                 .pfn            = __phys_to_pfn(S5PC100_PA_SROMC),
  95                 .length         = SZ_4K,
  96                 .type           = MT_DEVICE,
  97         }, {
  98                 .virtual        = (unsigned long)S5P_VA_SYSTIMER,
  99                 .pfn            = __phys_to_pfn(S5PC100_PA_SYSTIMER),
 100                 .length         = SZ_16K,
 101                 .type           = MT_DEVICE,
 102         }, {
 103                 .virtual        = (unsigned long)S5P_VA_GPIO,
 104                 .pfn            = __phys_to_pfn(S5PC100_PA_GPIO),
 105                 .length         = SZ_4K,
 106                 .type           = MT_DEVICE,
 107         }, {
 108                 .virtual        = (unsigned long)VA_VIC0,
 109                 .pfn            = __phys_to_pfn(S5PC100_PA_VIC0),
 110                 .length         = SZ_16K,
 111                 .type           = MT_DEVICE,
 112         }, {
 113                 .virtual        = (unsigned long)VA_VIC1,
 114                 .pfn            = __phys_to_pfn(S5PC100_PA_VIC1),
 115                 .length         = SZ_16K,
 116                 .type           = MT_DEVICE,
 117         }, {
 118                 .virtual        = (unsigned long)VA_VIC2,
 119                 .pfn            = __phys_to_pfn(S5PC100_PA_VIC2),
 120                 .length         = SZ_16K,
 121                 .type           = MT_DEVICE,
 122         }, {
 123                 .virtual        = (unsigned long)S3C_VA_UART,
 124                 .pfn            = __phys_to_pfn(S3C_PA_UART),
 125                 .length         = SZ_512K,
 126                 .type           = MT_DEVICE,
 127         }, {
 128                 .virtual        = (unsigned long)S5PC100_VA_OTHERS,
 129                 .pfn            = __phys_to_pfn(S5PC100_PA_OTHERS),
 130                 .length         = SZ_4K,
 131                 .type           = MT_DEVICE,
 132         }
 133 };
 134
 135 /*
 136  * s5pc100_map_io
 137  *
 138  * register the standard CPU IO areas
 139  */
 140
 141 void __init s5pc100_init_io(struct map_desc *mach_desc, int size)
 142 {
 143         /* initialize the io descriptors we need for initialization */
 144         iotable_init(s5pc100_iodesc, ARRAY_SIZE(s5pc100_iodesc));
 145         if (mach_desc)
 146                 iotable_init(mach_desc, size);
 147
 148         /* detect cpu id and rev. */
 149         s5p_init_cpu(S5P_VA_CHIPID);
 150
 151         s3c_init_cpu(samsung_cpu_id, cpu_ids, ARRAY_SIZE(cpu_ids));
 152 }
 153
 154 void __init s5pc100_map_io(void)
 155 {
 156         /* initialise device information early */
 157         s5pc100_default_sdhci0();
 158         s5pc100_default_sdhci1();
 159         s5pc100_default_sdhci2();
 160
 161         s3c_adc_setname("s3c64xx-adc");
 162
 163         /* the i2c devices are directly compatible with s3c2440 */
 164         s3c_i2c0_setname("s3c2440-i2c");
 165         s3c_i2c1_setname("s3c2440-i2c");
 166
 167         s3c_onenand_setname("s5pc100-onenand");
 168         s3c_fb_setname("s5pc100-fb");
 169         s3c_cfcon_setname("s5pc100-pata");
 170
 171         s3c64xx_spi_setname("s5pc100-spi");
 172 }
 173
 174 void __init s5pc100_init_clocks(int xtal)
 175 {
 176         printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
 177
 178         s3c24xx_register_baseclocks(xtal);
 179         s5p_register_clocks(xtal);
 180         s5pc100_register_clocks();
 181         s5pc100_setup_clocks();
 182         samsung_wdt_reset_init(S3C_VA_WATCHDOG);
 183 }
 184
 185 void __init s5pc100_init_irq(void)
 186 {
 187         u32 vic[] = {~0, ~0, ~0};
 188
 189         /* VIC0, VIC1, and VIC2 are fully populated. */
 190         s5p_init_irq(vic, ARRAY_SIZE(vic));
 191 }
 192
 193 static struct bus_type s5pc100_subsys = {
 194         .name           = "s5pc100-core",
 195         .dev_name       = "s5pc100-core",
 196 };
 197
 198 static struct device s5pc100_dev = {
 199         .bus    = &s5pc100_subsys,
 200 };
 201
 202 static int __init s5pc100_core_init(void)
 203 {
 204         return subsys_system_register(&s5pc100_subsys, NULL);
 205 }
 206 core_initcall(s5pc100_core_init);
 207
 208 int __init s5pc100_init(void)
 209 {
 210         printk(KERN_INFO "S5PC100: Initializing architecture\n");
 211         return device_register(&s5pc100_dev);
 212 }
 213
 214 /* uart registration process */
 215
 216 void __init s5pc100_init_uarts(struct s3c2410_uartcfg *cfg, int no)
 217 {
 218         s3c24xx_init_uartdevs("s3c6400-uart", s5p_uart_resources, cfg, no);
 219 }
 220
 221 void s5pc100_restart(enum reboot_mode mode, const char *cmd)
 222 {
 223         if (mode != REBOOT_SOFT)
 224                 samsung_wdt_reset();
 225
 226         soft_restart(0);
 227 }