arch/arm/mach-s3c2412/mach-jive.c

   1 /* linux/arch/arm/mach-s3c2410/mach-jive.c
   2  *
   3  * Copyright 2007 Simtec Electronics
   4  *      Ben Dooks <ben@simtec.co.uk>
   5  *
   6  * http://armlinux.simtec.co.uk/
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11 */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/types.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/list.h>
  17 #include <linux/timer.h>
  18 #include <linux/init.h>
  19 #include <linux/sysdev.h>
  20 #include <linux/serial_core.h>
  21 #include <linux/platform_device.h>
  22
  23 #include <linux/mtd/mtd.h>
  24 #include <linux/mtd/partitions.h>
  25
  26 #include <asm/mach/arch.h>
  27 #include <asm/mach/map.h>
  28 #include <asm/mach/irq.h>
  29
  30 #include <asm/plat-s3c/regs-serial.h>
  31 #include <asm/plat-s3c/nand.h>
  32
  33 #include <asm/arch/regs-power.h>
  34 #include <asm/arch/regs-gpio.h>
  35 #include <asm/arch/regs-mem.h>
  36 #include <asm/arch/regs-lcd.h>
  37
  38 #include <asm/mach-types.h>
  39
  40 #include <linux/mtd/mtd.h>
  41 #include <linux/mtd/nand.h>
  42 #include <linux/mtd/nand_ecc.h>
  43 #include <linux/mtd/partitions.h>
  44
  45 #include <asm/plat-s3c24xx/clock.h>
  46 #include <asm/plat-s3c24xx/devs.h>
  47 #include <asm/plat-s3c24xx/cpu.h>
  48 #include <asm/plat-s3c24xx/pm.h>
  49 #include <asm/plat-s3c24xx/udc.h>
  50
  51 static struct map_desc jive_iodesc[] __initdata = {
  52 };
  53
  54 #define UCON S3C2410_UCON_DEFAULT
  55 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE
  56 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
  57
  58 static struct s3c2410_uartcfg jive_uartcfgs[] = {
  59         [0] = {
  60                 .hwport      = 0,
  61                 .flags       = 0,
  62                 .ucon        = UCON,
  63                 .ulcon       = ULCON,
  64                 .ufcon       = UFCON,
  65         },
  66         [1] = {
  67                 .hwport      = 1,
  68                 .flags       = 0,
  69                 .ucon        = UCON,
  70                 .ulcon       = ULCON,
  71                 .ufcon       = UFCON,
  72         },
  73         [2] = {
  74                 .hwport      = 2,
  75                 .flags       = 0,
  76                 .ucon        = UCON,
  77                 .ulcon       = ULCON,
  78                 .ufcon       = UFCON,
  79         }
  80 };
  81
  82 /* Jive flash assignment
  83  *
  84  * 0x00000000-0x00028000 : uboot
  85  * 0x00028000-0x0002c000 : uboot env
  86  * 0x0002c000-0x00030000 : spare
  87  * 0x00030000-0x00200000 : zimage A
  88  * 0x00200000-0x01600000 : cramfs A
  89  * 0x01600000-0x017d0000 : zimage B
  90  * 0x017d0000-0x02bd0000 : cramfs B
  91  * 0x02bd0000-0x03fd0000 : yaffs
  92  */
  93 static struct mtd_partition jive_imageA_nand_part[] = {
  94
  95 #ifdef CONFIG_MACH_JIVE_SHOW_BOOTLOADER
  96         /* Don't allow access to the bootloader from linux */
  97         {
  98                 .name           = "uboot",
  99                 .offset         = 0,
 100                 .size           = (160 * SZ_1K),
 101                 .mask_flags     = MTD_WRITEABLE, /* force read-only */
 102         },
 103
 104         /* spare */
 105         {
 106                 .name           = "spare",
 107                 .offset         = (176 * SZ_1K),
 108                 .size           = (16 * SZ_1K),
 109         },
 110 #endif
 111
 112         /* booted images */
 113         {
 114                 .name           = "kernel (ro)",
 115                 .offset         = (192 * SZ_1K),
 116                 .size           = (SZ_2M) - (192 * SZ_1K),
 117                 .mask_flags     = MTD_WRITEABLE, /* force read-only */
 118         }, {
 119                 .name           = "root (ro)",
 120                 .offset         = (SZ_2M),
 121                 .size           = (20 * SZ_1M),
 122                 .mask_flags     = MTD_WRITEABLE, /* force read-only */
 123         },
 124
 125         /* yaffs */
 126         {
 127                 .name           = "yaffs",
 128                 .offset         = (44 * SZ_1M),
 129                 .size           = (20 * SZ_1M),
 130         },
 131
 132         /* bootloader environment */
 133         {
 134                 .name           = "env",
 135                 .offset         = (160 * SZ_1K),
 136                 .size           = (16 * SZ_1K),
 137         },
 138
 139         /* upgrade images */
 140         {
 141                 .name           = "zimage",
 142                 .offset         = (22 * SZ_1M),
 143                 .size           = (2 * SZ_1M) - (192 * SZ_1K),
 144         }, {
 145                 .name           = "cramfs",
 146                 .offset         = (24 * SZ_1M) - (192*SZ_1K),
 147                 .size           = (20 * SZ_1M),
 148         },
 149 };
 150
 151 static struct mtd_partition jive_imageB_nand_part[] = {
 152
 153 #ifdef CONFIG_MACH_JIVE_SHOW_BOOTLOADER
 154         /* Don't allow access to the bootloader from linux */
 155         {
 156                 .name           = "uboot",
 157                 .offset         = 0,
 158                 .size           = (160 * SZ_1K),
 159                 .mask_flags     = MTD_WRITEABLE, /* force read-only */
 160         },
 161
 162         /* spare */
 163         {
 164                 .name           = "spare",
 165                 .offset         = (176 * SZ_1K),
 166                 .size           = (16 * SZ_1K),
 167         },
 168 #endif
 169
 170         /* booted images */
 171         {
 172                 .name           = "kernel (ro)",
 173                 .offset         = (22 * SZ_1M),
 174                 .size           = (2 * SZ_1M) - (192 * SZ_1K),
 175                 .mask_flags     = MTD_WRITEABLE, /* force read-only */
 176         },
 177         {
 178                 .name           = "root (ro)",
 179                 .offset         = (24 * SZ_1M) - (192 * SZ_1K),
 180                 .size           = (20 * SZ_1M),
 181                 .mask_flags     = MTD_WRITEABLE, /* force read-only */
 182         },
 183
 184         /* yaffs */
 185         {
 186                 .name           = "yaffs",
 187                 .offset         = (44 * SZ_1M),
 188                 .size           = (20 * SZ_1M),
 189         },
 190
 191         /* bootloader environment */
 192         {
 193                 .name           = "env",
 194                 .offset         = (160 * SZ_1K),
 195                 .size           = (16 * SZ_1K),
 196         },
 197
 198         /* upgrade images */
 199         {
 200                 .name           = "zimage",
 201                 .offset         = (192 * SZ_1K),
 202                 .size           = (2 * SZ_1M) - (192 * SZ_1K),
 203         }, {
 204                 .name           = "cramfs",
 205                 .offset         = (2 * SZ_1M),
 206                 .size           = (20 * SZ_1M),
 207         },
 208 };
 209
 210 static struct s3c2410_nand_set jive_nand_sets[] = {
 211         [0] = {
 212                 .name           = "flash",
 213                 .nr_chips       = 1,
 214                 .nr_partitions  = ARRAY_SIZE(jive_imageA_nand_part),
 215                 .partitions     = jive_imageA_nand_part,
 216         },
 217 };
 218
 219 static struct s3c2410_platform_nand jive_nand_info = {
 220         /* set taken from osiris nand timings, possibly still conservative */
 221         .tacls          = 30,
 222         .twrph0         = 55,
 223         .twrph1         = 40,
 224         .sets           = jive_nand_sets,
 225         .nr_sets        = ARRAY_SIZE(jive_nand_sets),
 226 };
 227
 228 static int __init jive_mtdset(char *options)
 229 {
 230         struct s3c2410_nand_set *nand = &jive_nand_sets[0];
 231         unsigned long set;
 232
 233         if (options == NULL || options[0] == '\0')
 234                 return 0;
 235
 236         if (strict_strtoul(options, 10, &set)) {
 237                 printk(KERN_ERR "failed to parse mtdset=%s\n", options);
 238                 return 0;
 239         }
 240
 241         switch (set) {
 242         case 1:
 243                 nand->nr_partitions = ARRAY_SIZE(jive_imageB_nand_part);
 244                 nand->partitions = jive_imageB_nand_part;
 245         case 0:
 246                 /* this is already setup in the nand info */
 247                 break;
 248         default:
 249                 printk(KERN_ERR "Unknown mtd set %ld specified,"
 250                        "using default.", set);
 251         }
 252
 253         return 0;
 254 }
 255
 256 /* parse the mtdset= option given to the kernel command line */
 257 __setup("mtdset=", jive_mtdset);
 258
 259 static struct platform_device *jive_devices[] __initdata = {
 260         &s3c_device_usb,
 261         &s3c_device_rtc,
 262         &s3c_device_wdt,
 263         &s3c_device_i2c,
 264         &s3c_device_nand,
 265         &s3c_device_usbgadget,
 266 };
 267
 268 static struct s3c2410_udc_mach_info jive_udc_cfg __initdata = {
 269         .vbus_pin       = S3C2410_GPG1,         /* detect is on GPG1 */
 270 };
 271
 272 /* Jive power management device */
 273
 274 #ifdef CONFIG_PM
 275 static int jive_pm_suspend(struct sys_device *sd, pm_message_t state)
 276 {
 277         /* Write the magic value u-boot uses to check for resume into
 278          * the INFORM0 register, and ensure INFORM1 is set to the
 279          * correct address to resume from. */
 280
 281         __raw_writel(0x2BED, S3C2412_INFORM0);
 282         __raw_writel(virt_to_phys(s3c2410_cpu_resume), S3C2412_INFORM1);
 283
 284         return 0;
 285 }
 286
 287 static int jive_pm_resume(struct sys_device *sd)
 288 {
 289         __raw_writel(0x0, S3C2412_INFORM0);
 290         return 0;
 291 }
 292
 293 #else
 294 #define jive_pm_suspend NULL
 295 #define jive_pm_resume NULL
 296 #endif
 297
 298 static struct sysdev_class jive_pm_sysclass = {
 299         .name           = "jive-pm",
 300         .suspend        = jive_pm_suspend,
 301         .resume         = jive_pm_resume,
 302 };
 303
 304 static struct sys_device jive_pm_sysdev = {
 305         .cls            = &jive_pm_sysclass,
 306 };
 307
 308 static void __init jive_map_io(void)
 309 {
 310         s3c24xx_init_io(jive_iodesc, ARRAY_SIZE(jive_iodesc));
 311         s3c24xx_init_clocks(12000000);
 312         s3c24xx_init_uarts(jive_uartcfgs, ARRAY_SIZE(jive_uartcfgs));
 313 }
 314
 315 static void __init jive_machine_init(void)
 316 {
 317         /* register system devices for managing low level suspend */
 318
 319         sysdev_class_register(&jive_pm_sysclass);
 320         sysdev_register(&jive_pm_sysdev);
 321
 322         s3c2410_pm_init();
 323
 324         s3c_device_nand.dev.platform_data = &jive_nand_info;
 325
 326         /* Turn off suspend on both USB ports, and switch the
 327          * selectable USB port to USB device mode. */
 328
 329         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 330                               S3C2410_MISCCR_USBSUSPND0 |
 331                               S3C2410_MISCCR_USBSUSPND1, 0x0);
 332
 333         s3c24xx_udc_set_platdata(&jive_udc_cfg);
 334
 335         platform_add_devices(jive_devices, ARRAY_SIZE(jive_devices));
 336 }
 337
 338 MACHINE_START(JIVE, "JIVE")
 339         /* Maintainer: Ben Dooks <ben@fluff.org> */
 340         .phys_io        = S3C2410_PA_UART,
 341         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
 342         .boot_params    = S3C2410_SDRAM_PA + 0x100,
 343
 344         .init_irq       = s3c24xx_init_irq,
 345         .map_io         = jive_map_io,
 346         .init_machine   = jive_machine_init,
 347         .timer          = &s3c24xx_timer,
 348 MACHINE_END