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 #include <asm/ifxmips/ifxmips_irq.h>
  38
  39 #define MAX_BOARD_NAME_LEN              32
  40 #define MAX_IFXMIPS_DEVS                9
  41
  42 #define SYSTEM_DANUBE                   "Danube"
  43 #define SYSTEM_DANUBE_CHIPID1   0x00129083
  44 #define SYSTEM_DANUBE_CHIPID2   0x0012B083
  45
  46 #define SYSTEM_TWINPASS                 "Twinpass"
  47 #define SYSTEM_TWINPASS_CHIPID  0x0012D083
  48
  49 enum {
  50         EASY50712,
  51         EASY4010,
  52         ARV4519,
  53 };
  54
  55 extern int ifxmips_pci_external_clock;
  56
  57 static unsigned int chiprev;
  58 static int cmdline_mac;
  59 char board_name[MAX_BOARD_NAME_LEN + 1] = { 0 };
  60
  61 struct ifxmips_board {
  62         int type;
  63         char name[32];
  64         unsigned int system_type;
  65         struct platform_device **devs;
  66         struct resource reset_resource;
  67         struct resource gpiodev_resource;
  68         struct gpio_led *ifxmips_leds;
  69         struct gpio_led *gpio_leds;
  70         int pci_external_clock;
  71         int num_devs;
  72 };
  73
  74 DEFINE_SPINLOCK(ebu_lock);
  75 EXPORT_SYMBOL_GPL(ebu_lock);
  76
  77 static unsigned char ifxmips_ethaddr[6];
  78 static int ifxmips_brn;
  79
  80 static struct gpio_led_platform_data ifxmips_led_data;
  81
  82 static struct platform_device ifxmips_led = {
  83         .id = 0,
  84         .name = "ifxmips_led",
  85         .dev = {
  86                 .platform_data = (void *) &ifxmips_led_data,
  87         }
  88 };
  89
  90 static struct platform_device ifxmips_gpio = {
  91         .id = 0,
  92         .name = "ifxmips_gpio",
  93         .num_resources = 1,
  94 };
  95
  96 static struct platform_device ifxmips_mii = {
  97         .id = 0,
  98         .name = "ifxmips_mii0",
  99         .dev = {
 100                 .platform_data = ifxmips_ethaddr,
 101         }
 102 };
 103
 104 static struct platform_device ifxmips_wdt = {
 105         .id = 0,
 106         .name = "ifxmips_wdt",
 107 };
 108
 109 static struct resource ifxmips_mtd_resource = {
 110         .start  = IFXMIPS_FLASH_START,
 111         .end    = IFXMIPS_FLASH_START + IFXMIPS_FLASH_MAX - 1,
 112         .flags  = IORESOURCE_MEM,
 113 };
 114
 115 static struct platform_device ifxmips_mtd = {
 116         .id = 0,
 117         .name = "ifxmips_mtd",
 118         .num_resources  = 1,
 119         .resource   = &ifxmips_mtd_resource,
 120 };
 121
 122 static struct platform_device ifxmips_gpio_dev = {
 123         .name     = "GPIODEV",
 124         .id     = -1,
 125         .num_resources    =     1,
 126 };
 127
 128 #ifdef CONFIG_LEDS_GPIO
 129 static struct gpio_led arv4519_gpio_leds[] = {
 130         { .name = "ifx:green:power", .gpio = 3, .active_low = 1, },
 131         { .name = "ifx:red:power", .gpio = 7, .active_low = 1, },
 132         { .name = "ifx:green:adsl", .gpio = 4, .active_low = 1, },
 133         { .name = "ifx:green:internet", .gpio = 5, .active_low = 1, },
 134         { .name = "ifx:red:internet", .gpio = 8, .active_low = 1, },
 135         { .name = "ifx:green:wlan", .gpio = 6, .active_low = 1, },
 136         { .name = "ifx:green:usbpwr", .gpio = 14, .active_low = 1, },
 137         { .name = "ifx:green:usb", .gpio = 19, .active_low = 1, },
 138 };
 139
 140 static struct gpio_led_platform_data ifxmips_gpio_led_data;
 141
 142 static struct platform_device ifxmips_gpio_leds = {
 143         .name = "leds-gpio",
 144         .id = -1,
 145         .dev = {
 146                 .platform_data = (void *) &ifxmips_gpio_led_data,
 147         }
 148 };
 149 #endif
 150
 151 static struct resource dwc_usb_res[] = {
 152         {
 153                 .name = "dwc_usb_membase",
 154                 .flags = IORESOURCE_MEM,
 155                 .start = 0x1E101000,
 156                 .end = 0x1E101FFF
 157         },
 158         {
 159                 .name = "dwc_usb_irq",
 160                 .flags = IORESOURCE_IRQ,
 161                 .start = IFXMIPS_USB_INT,
 162         }
 163 };
 164
 165 static struct platform_device dwc_usb =
 166 {
 167         .id = 0,
 168         .name = "dwc_usb",
 169         .resource = dwc_usb_res,
 170         .num_resources = ARRAY_SIZE(dwc_usb_res),
 171 };
 172
 173 struct platform_device *easy50712_devs[] = {
 174         &ifxmips_led, &ifxmips_gpio, &ifxmips_mii,
 175         &ifxmips_mtd, &ifxmips_wdt, &ifxmips_gpio_dev, &dwc_usb
 176 };
 177
 178 struct platform_device *easy4010_devs[] = {
 179         &ifxmips_led, &ifxmips_gpio, &ifxmips_mii,
 180         &ifxmips_mtd, &ifxmips_wdt, &ifxmips_gpio_dev, &dwc_usb
 181 };
 182
 183 struct platform_device *arv5419_devs[] = {
 184         &ifxmips_gpio, &ifxmips_mii, &ifxmips_mtd,
 185         &ifxmips_gpio_dev, &ifxmips_wdt, &dwc_usb,
 186 #ifdef CONFIG_LEDS_GPIO
 187         &ifxmips_gpio_leds,
 188 #endif
 189 };
 190
 191 static struct gpio_led easy50712_leds[] = {
 192         { .name = "ifx:green:test0", .gpio = 0,},
 193         { .name = "ifx:green:test1", .gpio = 1,},
 194         { .name = "ifx:green:test2", .gpio = 2,},
 195         { .name = "ifx:green:test3", .gpio = 3,},
 196 };
 197
 198 static struct gpio_led easy4010_leds[] = {
 199         { .name = "ifx:green:test0", .gpio = 0,},
 200         { .name = "ifx:green:test1", .gpio = 1,},
 201         { .name = "ifx:green:test2", .gpio = 2,},
 202         { .name = "ifx:green:test3", .gpio = 3,},
 203 };
 204
 205 static struct ifxmips_board boards[] = {
 206         {
 207                 .type = EASY50712,
 208                 .name = "EASY50712",
 209                 .system_type = SYSTEM_DANUBE_CHIPID1,
 210                 .devs = easy50712_devs,
 211                 .reset_resource = {.name = "reset", .start = 1, .end = 15,},
 212                 .gpiodev_resource = { .name = "gpio",
 213                         .start = (1 << 0) | (1 << 1),
 214                         .end = (1 << 0) | (1 << 1)},
 215                 .ifxmips_leds = easy50712_leds,
 216         }, {
 217                 .type = EASY4010,
 218                 .name = "EASY4010",
 219                 .system_type = SYSTEM_TWINPASS_CHIPID,
 220                 .devs = easy4010_devs,
 221                 .reset_resource = {.name = "reset", .start = 1, .end = 15},
 222                 .gpiodev_resource = { .name = "gpio",
 223                         .start = (1 << 0) | (1 << 1),
 224                         .end = (1 << 0) | (1 << 1)},
 225                 .ifxmips_leds = easy4010_leds,
 226         }, {
 227                 .type = ARV4519,
 228                 .name = "ARV4519",
 229                 .system_type = SYSTEM_DANUBE_CHIPID2,
 230                 .devs = arv5419_devs,
 231                 .reset_resource = {.name = "reset", .start = 1, .end = 14},
 232                 .pci_external_clock = 1,
 233                 .gpio_leds = arv4519_gpio_leds,
 234         },
 235 };
 236
 237 const char *get_system_type(void)
 238 {
 239         chiprev = (ifxmips_r32(IFXMIPS_MPS_CHIPID) & 0x0FFFFFFF);
 240
 241         switch (chiprev) {
 242         case SYSTEM_DANUBE_CHIPID1:
 243         case SYSTEM_DANUBE_CHIPID2:
 244                 return SYSTEM_DANUBE;
 245
 246         case SYSTEM_TWINPASS_CHIPID:
 247                 return SYSTEM_TWINPASS;
 248         }
 249
 250         return BOARD_SYSTEM_TYPE;
 251 }
 252
 253 static int __init ifxmips_set_board_type(char *str)
 254 {
 255         str = strchr(str, '=');
 256         if (!str)
 257                 goto out;
 258         str++;
 259         if (strlen(str) > MAX_BOARD_NAME_LEN)
 260                 goto out;
 261         strncpy(board_name, str, MAX_BOARD_NAME_LEN);
 262         printk(KERN_INFO "bootloader told us, that this is a %s board\n",
 263                 board_name);
 264 out:
 265         return 1;
 266 }
 267 __setup("ifxmips_board", ifxmips_set_board_type);
 268
 269 static int __init ifxmips_set_ethaddr(char *str)
 270 {
 271 #define IS_HEX(x) \
 272         (((x >= '0' && x <= '9') || (x >= 'a' && x <= 'f') \
 273                 || (x >= 'A' && x <= 'F')) ? (1) : (0))
 274         int i;
 275         str = strchr(str, '=');
 276         if (!str)
 277                 goto out;
 278         str++;
 279         if (strlen(str) != 17)
 280                 goto out;
 281         for (i = 0; i < 6; i++) {
 282                 if (!IS_HEX(str[3 * i]) || !IS_HEX(str[(3 * i) + 1]))
 283                         goto out;
 284                 if ((i != 5) && (str[(3 * i) + 2] != ':'))
 285                         goto out;
 286                 ifxmips_ethaddr[i] = simple_strtoul(&str[3 * i], NULL, 16);
 287         }
 288         if (is_valid_ether_addr(ifxmips_ethaddr))
 289                 cmdline_mac = 1;
 290 out:
 291         return 1;
 292 }
 293 __setup("ethaddr", ifxmips_set_ethaddr);
 294
 295 int ifxmips_find_brn_block(void)
 296 {
 297         unsigned char temp[8];
 298         memcpy_fromio(temp,
 299                 (void *)KSEG1ADDR(IFXMIPS_FLASH_START + 0x800000 - 0x10000), 8);
 300         if (memcmp(temp, "BRN-BOOT", 8) == 0) {
 301                 if (!cmdline_mac)
 302                         memcpy_fromio(ifxmips_ethaddr,
 303                                 (void *)KSEG1ADDR(IFXMIPS_FLASH_START +
 304                                         0x800000 - 0x10000 + 0x16), 6);
 305                 if (is_valid_ether_addr(ifxmips_ethaddr))
 306                         cmdline_mac = 1;
 307                 return 1;
 308         } else {
 309                 return 0;
 310         }
 311 }
 312
 313 int ifxmips_has_brn_block(void)
 314 {
 315         return ifxmips_brn;
 316 }
 317 EXPORT_SYMBOL(ifxmips_has_brn_block);
 318
 319 struct ifxmips_board *ifxmips_find_board(void)
 320 {
 321         int i;
 322         if (!*board_name)
 323                 return 0;
 324         for (i = 0; i < ARRAY_SIZE(boards); i++)
 325                 if ((boards[i].system_type == chiprev) &&
 326                     (!strcmp(boards[i].name, board_name)))
 327                         return &boards[i];
 328         return 0;
 329 }
 330
 331 int __init ifxmips_init_devices(void)
 332 {
 333         struct ifxmips_board *board = ifxmips_find_board();
 334
 335         chiprev = (ifxmips_r32(IFXMIPS_MPS_CHIPID) & 0x0FFFFFFF);
 336         ifxmips_brn = ifxmips_find_brn_block();
 337
 338         if (!cmdline_mac)
 339                 random_ether_addr(ifxmips_ethaddr);
 340
 341         if (!board) {
 342                 switch (chiprev) {
 343                 case SYSTEM_DANUBE_CHIPID1:
 344                 case SYSTEM_DANUBE_CHIPID2:
 345                 default:
 346                         board = &boards[0];
 347                         break;
 348                 case SYSTEM_TWINPASS_CHIPID:
 349                         board = &boards[1];
 350                         break;
 351                 }
 352         }
 353
 354         switch (board->type) {
 355         case EASY50712:
 356                 board->num_devs = ARRAY_SIZE(easy50712_devs);
 357                 ifxmips_led_data.num_leds = ARRAY_SIZE(easy50712_leds);
 358                 break;
 359         case EASY4010:
 360                 board->num_devs = ARRAY_SIZE(easy4010_devs);
 361                 ifxmips_led_data.num_leds = ARRAY_SIZE(easy4010_leds);
 362                 break;
 363         case ARV4519:
 364                 gpio_set_value(3, 0);
 365                 gpio_set_value(4, 0);
 366                 gpio_set_value(5, 0);
 367                 gpio_set_value(6, 0);
 368                 gpio_set_value(7, 1);
 369                 gpio_set_value(8, 1);
 370                 gpio_set_value(19, 0);
 371                 board->num_devs = ARRAY_SIZE(arv5419_devs);
 372 #ifdef CONFIG_LEDS_GPIO
 373                 ifxmips_gpio_led_data.num_leds = ARRAY_SIZE(arv4519_gpio_leds);
 374 #endif
 375                 break;
 376         }
 377 #ifdef CONFIG_LEDS_GPIO
 378         ifxmips_gpio_led_data.leds = board->gpio_leds;
 379 #endif
 380         ifxmips_led_data.leds = board->ifxmips_leds;
 381
 382         printk(KERN_INFO "%s: adding %d devs\n",
 383                 __func__, board->num_devs);
 384
 385         ifxmips_gpio.resource = &board->reset_resource;
 386         ifxmips_gpio_dev.resource = &board->gpiodev_resource;
 387         if (board->pci_external_clock)
 388                 ifxmips_pci_external_clock = 1;
 389         printk(KERN_INFO "using board definition %s\n", board->name);
 390         return platform_add_devices(board->devs, board->num_devs);
 391 }
 392
 393 arch_initcall(ifxmips_init_devices);