target/linux/ifxmips/files/arch/mips/ifxmips/board.c

   1 /*
   2  *   This program is free software; you can redistribute it and/or modify
   3  *   it under the terms of the GNU General Public License as published by
   4  *   the Free Software Foundation; either version 2 of the License, or
   5  *   (at your option) any later version.
   6  *
   7  *   This program is distributed in the hope that it will be useful,
   8  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  *   GNU General Public License for more details.
  11  *
  12  *   You should have received a copy of the GNU General Public License
  13  *   along with this program; if not, write to the Free Software
  14  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  15  *
  16  *   Copyright (C) 2007 John Crispin <blogic@openwrt.org>
  17  */
  18
  19 #include <linux/autoconf.h>
  20 #include <linux/init.h>
  21 #include <linux/module.h>
  22 #include <linux/types.h>
  23 #include <linux/string.h>
  24 #include <linux/mtd/physmap.h>
  25 #include <linux/kernel.h>
  26 #include <linux/reboot.h>
  27 #include <linux/platform_device.h>
  28 #include <linux/leds.h>
  29 #include <linux/etherdevice.h>
  30 #include <linux/reboot.h>
  31 #include <linux/time.h>
  32 #include <linux/io.h>
  33 #include <linux/gpio.h>
  34 #include <asm/bootinfo.h>
  35 #include <asm/irq.h>
  36 #include <asm/ifxmips/ifxmips.h>
  37
  38 #define MAX_BOARD_NAME_LEN              32
  39 #define MAX_IFXMIPS_DEVS                9
  40
  41 #define SYSTEM_DANUBE                   "Danube"
  42 #define SYSTEM_DANUBE_CHIPID1   0x00129083
  43 #define SYSTEM_DANUBE_CHIPID2   0x0012B083
  44
  45 #define SYSTEM_TWINPASS                 "Twinpass"
  46 #define SYSTEM_TWINPASS_CHIPID  0x0012D083
  47
  48 enum {
  49         EASY50712,
  50         EASY4010,
  51         ARV4519,
  52 };
  53
  54 extern int ifxmips_pci_external_clock;
  55
  56 static unsigned int chiprev;
  57 static int cmdline_mac;
  58 char board_name[MAX_BOARD_NAME_LEN + 1] = { 0 };
  59
  60 struct ifxmips_board {
  61         int type;
  62         char name[32];
  63         unsigned int system_type;
  64         struct platform_device **devs;
  65         struct resource reset_resource;
  66         struct resource gpiodev_resource;
  67         struct gpio_led *ifxmips_leds;
  68         struct gpio_led *gpio_leds;
  69         int pci_external_clock;
  70         int num_devs;
  71 };
  72
  73 DEFINE_SPINLOCK(ebu_lock);
  74 EXPORT_SYMBOL_GPL(ebu_lock);
  75
  76 static unsigned char ifxmips_ethaddr[6];
  77 static int ifxmips_brn;
  78
  79 static struct gpio_led_platform_data ifxmips_led_data;
  80
  81 static struct platform_device ifxmips_led = {
  82         .id = 0,
  83         .name = "ifxmips_led",
  84         .dev = {
  85                 .platform_data = (void *) &ifxmips_led_data,
  86         }
  87 };
  88
  89 static struct platform_device ifxmips_gpio = {
  90         .id = 0,
  91         .name = "ifxmips_gpio",
  92         .num_resources = 1,
  93 };
  94
  95 static struct platform_device ifxmips_mii = {
  96         .id = 0,
  97         .name = "ifxmips_mii0",
  98         .dev = {
  99                 .platform_data = ifxmips_ethaddr,
 100         }
 101 };
 102
 103 static struct platform_device ifxmips_wdt = {
 104         .id = 0,
 105         .name = "ifxmips_wdt",
 106 };
 107
 108 static struct resource ifxmips_mtd_resource = {
 109         .start  = IFXMIPS_FLASH_START,
 110         .end    = IFXMIPS_FLASH_START + IFXMIPS_FLASH_MAX - 1,
 111         .flags  = IORESOURCE_MEM,
 112 };
 113
 114 static struct platform_device ifxmips_mtd = {
 115         .id = 0,
 116         .name = "ifxmips_mtd",
 117         .num_resources  = 1,
 118         .resource   = &ifxmips_mtd_resource,
 119 };
 120
 121 static struct platform_device ifxmips_gpio_dev = {
 122         .name     = "GPIODEV",
 123         .id     = -1,
 124         .num_resources    =     1,
 125 };
 126
 127 #ifdef CONFIG_LEDS_GPIO
 128 static struct gpio_led arv4519_gpio_leds[] = {
 129         { .name = "ifx:green:power", .gpio = 3, .active_low = 1, },
 130         { .name = "ifx:red:power", .gpio = 7, .active_low = 1, },
 131         { .name = "ifx:green:adsl", .gpio = 4, .active_low = 1, },
 132         { .name = "ifx:green:internet", .gpio = 5, .active_low = 1, },
 133         { .name = "ifx:red:internet", .gpio = 8, .active_low = 1, },
 134         { .name = "ifx:green:wlan", .gpio = 6, .active_low = 1, },
 135         { .name = "ifx:green:usb", .gpio = 19, .active_low = 1, },
 136 };
 137
 138 static struct gpio_led_platform_data ifxmips_gpio_led_data;
 139
 140 static struct platform_device ifxmips_gpio_leds = {
 141         .name = "leds-gpio",
 142         .id = -1,
 143         .dev = {
 144                 .platform_data = (void *) &ifxmips_gpio_led_data,
 145         }
 146 };
 147 #endif
 148
 149 struct platform_device *easy50712_devs[] = {
 150         &ifxmips_led, &ifxmips_gpio, &ifxmips_mii,
 151         &ifxmips_mtd, &ifxmips_wdt, &ifxmips_gpio_dev
 152 };
 153
 154 struct platform_device *easy4010_devs[] = {
 155         &ifxmips_led, &ifxmips_gpio, &ifxmips_mii,
 156         &ifxmips_mtd, &ifxmips_wdt, &ifxmips_gpio_dev
 157 };
 158
 159 struct platform_device *arv5419_devs[] = {
 160         &ifxmips_gpio, &ifxmips_mii, &ifxmips_mtd, &ifxmips_wdt,
 161 #ifdef CONFIG_LEDS_GPIO
 162         &ifxmips_gpio_leds,
 163 #endif
 164 };
 165
 166 static struct gpio_led easy50712_leds[] = {
 167         { .name = "ifx:green:test0", .gpio = 0,},
 168         { .name = "ifx:green:test1", .gpio = 1,},
 169         { .name = "ifx:green:test2", .gpio = 2,},
 170         { .name = "ifx:green:test3", .gpio = 3,},
 171 };
 172
 173 static struct gpio_led easy4010_leds[] = {
 174         { .name = "ifx:green:test0", .gpio = 0,},
 175         { .name = "ifx:green:test1", .gpio = 1,},
 176         { .name = "ifx:green:test2", .gpio = 2,},
 177         { .name = "ifx:green:test3", .gpio = 3,},
 178 };
 179
 180 static struct ifxmips_board boards[] = {
 181         {
 182                 .type = EASY50712,
 183                 .name = "EASY50712",
 184                 .system_type = SYSTEM_DANUBE_CHIPID1,
 185                 .devs = easy50712_devs,
 186                 .reset_resource = {.name = "reset", .start = 1, .end = 15,},
 187                 .gpiodev_resource = { .name = "gpio",
 188                         .start = (1 << 0) | (1 << 1),
 189                         .end = (1 << 0) | (1 << 1)},
 190                 .ifxmips_leds = easy50712_leds,
 191         }, {
 192                 .type = EASY4010,
 193                 .name = "EASY4010",
 194                 .system_type = SYSTEM_TWINPASS_CHIPID,
 195                 .devs = easy4010_devs,
 196                 .reset_resource = {.name = "reset", .start = 1, .end = 15},
 197                 .gpiodev_resource = { .name = "gpio",
 198                         .start = (1 << 0) | (1 << 1),
 199                         .end = (1 << 0) | (1 << 1)},
 200                 .ifxmips_leds = easy4010_leds,
 201         }, {
 202                 .type = ARV4519,
 203                 .name = "ARV4519",
 204                 .system_type = SYSTEM_DANUBE_CHIPID2,
 205                 .devs = arv5419_devs,
 206                 .reset_resource = {.name = "reset", .start = 1, .end = 14},
 207                 .pci_external_clock = 1,
 208                 .gpio_leds = arv4519_gpio_leds,
 209         },
 210 };
 211
 212 const char *get_system_type(void)
 213 {
 214         chiprev = (ifxmips_r32(IFXMIPS_MPS_CHIPID) & 0x0FFFFFFF);
 215
 216         switch (chiprev) {
 217         case SYSTEM_DANUBE_CHIPID1:
 218         case SYSTEM_DANUBE_CHIPID2:
 219                 return SYSTEM_DANUBE;
 220
 221         case SYSTEM_TWINPASS_CHIPID:
 222                 return SYSTEM_TWINPASS;
 223         }
 224
 225         return BOARD_SYSTEM_TYPE;
 226 }
 227
 228 static int __init ifxmips_set_board_type(char *str)
 229 {
 230         str = strchr(str, '=');
 231         if (!str)
 232                 goto out;
 233         str++;
 234         if (strlen(str) > MAX_BOARD_NAME_LEN)
 235                 goto out;
 236         strncpy(board_name, str, MAX_BOARD_NAME_LEN);
 237         printk(KERN_INFO "bootloader told us, that this is a %s board\n",
 238                 board_name);
 239 out:
 240         return 1;
 241 }
 242 __setup("ifxmips_board", ifxmips_set_board_type);
 243
 244 static int __init ifxmips_set_ethaddr(char *str)
 245 {
 246 #define IS_HEX(x) \
 247         (((x >= '0' && x <= '9') || (x >= 'a' && x <= 'f') \
 248                 || (x >= 'A' && x <= 'F')) ? (1) : (0))
 249         int i;
 250         str = strchr(str, '=');
 251         if (!str)
 252                 goto out;
 253         str++;
 254         if (strlen(str) != 17)
 255                 goto out;
 256         for (i = 0; i < 6; i++) {
 257                 if (!IS_HEX(str[3 * i]) || !IS_HEX(str[(3 * i) + 1]))
 258                         goto out;
 259                 if ((i != 5) && (str[(3 * i) + 2] != ':'))
 260                         goto out;
 261                 ifxmips_ethaddr[i] = simple_strtoul(&str[3 * i], NULL, 16);
 262         }
 263         if (is_valid_ether_addr(ifxmips_ethaddr))
 264                 cmdline_mac = 1;
 265 out:
 266         return 1;
 267 }
 268 __setup("ethaddr", ifxmips_set_ethaddr);
 269
 270 int ifxmips_find_brn_block(void)
 271 {
 272         unsigned char temp[8];
 273         memcpy_fromio(temp,
 274                 (void *)KSEG1ADDR(IFXMIPS_FLASH_START + 0x800000 - 0x10000), 8);
 275         if (memcmp(temp, "BRN-BOOT", 8) == 0) {
 276                 if (!cmdline_mac)
 277                         memcpy_fromio(ifxmips_ethaddr,
 278                                 (void *)KSEG1ADDR(IFXMIPS_FLASH_START +
 279                                         0x800000 - 0x10000 + 0x16), 6);
 280                 if (is_valid_ether_addr(ifxmips_ethaddr))
 281                         cmdline_mac = 1;
 282                 return 1;
 283         } else {
 284                 return 0;
 285         }
 286 }
 287
 288 int ifxmips_has_brn_block(void)
 289 {
 290         return ifxmips_brn;
 291 }
 292 EXPORT_SYMBOL(ifxmips_has_brn_block);
 293
 294 struct ifxmips_board *ifxmips_find_board(void)
 295 {
 296         int i;
 297         if (!*board_name)
 298                 return 0;
 299         for (i = 0; i < ARRAY_SIZE(boards); i++)
 300                 if ((boards[i].system_type == chiprev) &&
 301                     (!strcmp(boards[i].name, board_name)))
 302                         return &boards[i];
 303         return 0;
 304 }
 305
 306 int __init ifxmips_init_devices(void)
 307 {
 308         struct ifxmips_board *board = ifxmips_find_board();
 309
 310         chiprev = (ifxmips_r32(IFXMIPS_MPS_CHIPID) & 0x0FFFFFFF);
 311         ifxmips_brn = ifxmips_find_brn_block();
 312
 313         if (!cmdline_mac)
 314                 random_ether_addr(ifxmips_ethaddr);
 315
 316         if (!board) {
 317                 switch (chiprev) {
 318                 case SYSTEM_DANUBE_CHIPID1:
 319                 case SYSTEM_DANUBE_CHIPID2:
 320                 default:
 321                         board = &boards[0];
 322                         break;
 323                 case SYSTEM_TWINPASS_CHIPID:
 324                         board = &boards[1];
 325                         break;
 326                 }
 327         }
 328
 329         switch (board->type) {
 330         case EASY50712:
 331                 board->num_devs = ARRAY_SIZE(easy50712_devs);
 332                 ifxmips_led_data.num_leds = ARRAY_SIZE(easy50712_leds);
 333                 break;
 334         case EASY4010:
 335                 board->num_devs = ARRAY_SIZE(easy4010_devs);
 336                 ifxmips_led_data.num_leds = ARRAY_SIZE(easy4010_leds);
 337                 break;
 338         case ARV4519:
 339                 gpio_set_value(3, 0);
 340                 gpio_set_value(4, 0);
 341                 gpio_set_value(5, 0);
 342                 gpio_set_value(6, 0);
 343                 gpio_set_value(7, 1);
 344                 gpio_set_value(8, 1);
 345                 gpio_set_value(19, 0);
 346                 board->num_devs = ARRAY_SIZE(arv5419_devs);
 347 #ifdef CONFIG_LEDS_GPIO
 348                 ifxmips_gpio_led_data.num_leds = ARRAY_SIZE(arv4519_gpio_leds);
 349 #endif
 350                 break;
 351         }
 352 #ifdef CONFIG_LEDS_GPIO
 353         ifxmips_gpio_led_data.leds = board->gpio_leds;
 354 #endif
 355         ifxmips_led_data.leds = board->ifxmips_leds;
 356
 357         printk(KERN_INFO "%s: adding %d devs\n",
 358                 __func__, board->num_devs);
 359
 360         ifxmips_gpio.resource = &board->reset_resource;
 361         ifxmips_gpio_dev.resource = &board->gpiodev_resource;
 362         if (board->pci_external_clock)
 363                 ifxmips_pci_external_clock = 1;
 364         printk(KERN_INFO "using board definition %s\n", board->name);
 365         return platform_add_devices(board->devs, board->num_devs);
 366 }
 367
 368 arch_initcall(ifxmips_init_devices);