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 <asm/bootinfo.h>
  31 #include <asm/reboot.h>
  32 #include <asm/time.h>
  33 #include <asm/irq.h>
  34 #include <asm/io.h>
  35 #include <asm/gpio.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   0x10129083
  43 #define SYSTEM_DANUBE_CHIPID2   0x3012B083
  44
  45 #define SYSTEM_TWINPASS                 "Twinpass"
  46 #define SYSTEM_TWINPASS_CHIPID  0x3012D083
  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 = 0;
  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 spinlock_t ebu_lock = SPIN_LOCK_UNLOCKED;
  74 EXPORT_SYMBOL_GPL(ebu_lock);
  75
  76 static unsigned char ifxmips_mii_mac[6];
  77 static int ifxmips_brn = 0;
  78
  79 static struct gpio_led_platform_data ifxmips_led_data;
  80
  81 static struct platform_device
  82 ifxmips_led =
  83 {
  84         .id = 0,
  85         .name = "ifxmips_led",
  86         .dev = {
  87                 .platform_data = (void *) &ifxmips_led_data,
  88         }
  89 };
  90
  91 static struct platform_device
  92 ifxmips_gpio =
  93 {
  94         .id = 0,
  95         .name = "ifxmips_gpio",
  96         .num_resources = 1,
  97 };
  98
  99 static struct platform_device
 100 ifxmips_mii =
 101 {
 102         .id = 0,
 103         .name = "ifxmips_mii0",
 104         .dev = {
 105                 .platform_data = ifxmips_mii_mac,
 106         }
 107 };
 108
 109 static struct platform_device
 110 ifxmips_wdt =
 111 {
 112         .id = 0,
 113         .name = "ifxmips_wdt",
 114 };
 115
 116 static struct resource
 117 ifxmips_mtd_resource = {
 118         .start  = IFXMIPS_FLASH_START,
 119         .end    = IFXMIPS_FLASH_START + IFXMIPS_FLASH_MAX - 1,
 120         .flags  = IORESOURCE_MEM,
 121 };
 122
 123 static struct platform_device
 124 ifxmips_mtd =
 125 {
 126         .id = 0,
 127         .name = "ifxmips_mtd",
 128         .num_resources  = 1,
 129         .resource   = &ifxmips_mtd_resource,
 130 };
 131
 132 static struct platform_device
 133 ifxmips_gpio_dev = {
 134         .name     = "GPIODEV",
 135         .id     = -1,
 136         .num_resources    =     1,
 137 };
 138
 139 #ifdef CONFIG_LEDS_GPIO
 140 static struct gpio_led arv4519_gpio_leds[] = {
 141         { .name = "ifx:green:power", .gpio = 3, .active_low = 1, },
 142         { .name = "ifx:red:power", .gpio = 7, .active_low = 1, },
 143         { .name = "ifx:green:adsl", .gpio = 4, .active_low = 1, },
 144         { .name = "ifx:green:internet", .gpio = 5, .active_low = 1, },
 145         { .name = "ifx:red:internet", .gpio = 8, .active_low = 1, },
 146         { .name = "ifx:green:wlan", .gpio = 6, .active_low = 1, },
 147         { .name = "ifx:green:usb", .gpio = 19, .active_low = 1, },
 148 };
 149
 150 static struct gpio_led_platform_data ifxmips_gpio_led_data;
 151
 152 static struct platform_device ifxmips_gpio_leds = {
 153         .name = "leds-gpio",
 154         .id = -1,
 155         .dev = {
 156                 .platform_data = (void *) &ifxmips_gpio_led_data,
 157          }
 158 };
 159 #endif
 160
 161 struct platform_device *easy50712_devs[] = {
 162         &ifxmips_led, &ifxmips_gpio, &ifxmips_mii,
 163         &ifxmips_mtd, &ifxmips_wdt, &ifxmips_gpio_dev
 164 };
 165
 166 struct platform_device *easy4010_devs[] = {
 167         &ifxmips_led, &ifxmips_gpio, &ifxmips_mii,
 168         &ifxmips_mtd, &ifxmips_wdt, &ifxmips_gpio_dev
 169 };
 170
 171 struct platform_device *arv5419_devs[] = {
 172         &ifxmips_gpio, &ifxmips_mii, &ifxmips_mtd, &ifxmips_wdt,
 173 #ifdef CONFIG_LEDS_GPIO
 174         &ifxmips_gpio_leds,
 175 #endif
 176 };
 177
 178 static struct gpio_led easy50712_leds[] = {
 179         { .name = "ifx:green:test0", .gpio = 0,},
 180         { .name = "ifx:green:test1", .gpio = 1,},
 181         { .name = "ifx:green:test2", .gpio = 2,},
 182         { .name = "ifx:green:test3", .gpio = 3,},
 183 };
 184
 185 static struct gpio_led easy4010_leds[] = {
 186         { .name = "ifx:green:test0", .gpio = 0,},
 187         { .name = "ifx:green:test1", .gpio = 1,},
 188         { .name = "ifx:green:test2", .gpio = 2,},
 189         { .name = "ifx:green:test3", .gpio = 3,},
 190 };
 191
 192 static struct ifxmips_board boards[] =
 193 {
 194         {
 195                 .type = EASY50712,
 196                 .name = "EASY50712",
 197                 .system_type = SYSTEM_DANUBE_CHIPID1,
 198                 .devs = easy50712_devs,
 199                 .reset_resource = {.name = "reset", .start = 1, .end = 15,},
 200                 .gpiodev_resource =     {.name = "gpio", .start = (1 << 0) | (1 << 1),
 201                         .end = (1 << 0) | (1 << 1)},
 202                 .ifxmips_leds = easy50712_leds,
 203         }, {
 204                 .type = EASY4010,
 205                 .name = "EASY4010",
 206                 .system_type = SYSTEM_TWINPASS_CHIPID,
 207                 .devs = easy4010_devs,
 208                 .reset_resource = {.name = "reset", .start = 1, .end = 15},
 209                 .gpiodev_resource =     {.name = "gpio", .start = (1 << 0) | (1 << 1),
 210                         .end = (1 << 0) | (1 << 1)},
 211                 .ifxmips_leds = easy4010_leds,
 212         }, {
 213                 .type = ARV4519,
 214                 .name = "ARV4519",
 215                 .system_type = SYSTEM_DANUBE_CHIPID2,
 216                 .devs = arv5419_devs,
 217                 .reset_resource = {.name = "reset", .start = 1, .end = 14},
 218                 .pci_external_clock = 1,
 219                 .gpio_leds = arv4519_gpio_leds,
 220         },
 221 };
 222
 223 const char*
 224 get_system_type(void)
 225 {
 226         chiprev = ifxmips_r32(IFXMIPS_MPS_CHIPID);
 227         switch(chiprev)
 228         {
 229         case SYSTEM_DANUBE_CHIPID1:
 230         case SYSTEM_DANUBE_CHIPID2:
 231                 return SYSTEM_DANUBE;
 232
 233         case SYSTEM_TWINPASS_CHIPID:
 234                 return SYSTEM_TWINPASS;
 235         }
 236
 237         return BOARD_SYSTEM_TYPE;
 238 }
 239
 240 static int __init
 241 ifxmips_set_board_type(char *str)
 242 {
 243         str = strchr(str, '=');
 244         if(!str)
 245                 goto out;
 246         str++;
 247         if(strlen(str) > MAX_BOARD_NAME_LEN)
 248                 goto out;
 249         strncpy(board_name, str, MAX_BOARD_NAME_LEN);
 250         printk("bootloader told us, that this is a %s board\n", board_name);
 251 out:
 252         return 1;
 253 }
 254 __setup("ifxmips_board", ifxmips_set_board_type);
 255
 256 static int __init
 257 ifxmips_set_mii0_mac(char *str)
 258 {
 259 #define IS_HEX(x) \
 260         (((x >='0' && x <= '9') || (x >='a' && x <= 'f') || (x >='A' && x <= 'F'))?(1):(0))
 261         int i;
 262         str = strchr(str, '=');
 263         if(!str)
 264                 goto out;
 265         str++;
 266         if(strlen(str) != 17)
 267                 goto out;
 268         for(i = 0; i < 6; i++)
 269         {
 270                 if(!IS_HEX(str[3 * i]) || !IS_HEX(str[(3 * i) + 1]))
 271                         goto out;
 272                 if((i != 5) && (str[(3 * i) + 2] != ':'))
 273                         goto out;
 274                 ifxmips_mii_mac[i] = simple_strtoul(&str[3 * i], NULL, 16);
 275         }
 276         if(is_valid_ether_addr(ifxmips_mii_mac))
 277                 cmdline_mac = 1;
 278 out:
 279         return 1;
 280 }
 281 __setup("mii0_mac", ifxmips_set_mii0_mac);
 282
 283 int
 284 ifxmips_find_brn_block(void){
 285         unsigned char temp[8];
 286         memcpy_fromio(temp, (void*)KSEG1ADDR(IFXMIPS_FLASH_START + 0x800000 - 0x10000), 8);
 287         if(memcmp(temp, "BRN-BOOT", 8) == 0)
 288         {
 289                 if(!cmdline_mac)
 290                         memcpy_fromio(ifxmips_mii_mac, (void*)KSEG1ADDR(IFXMIPS_FLASH_START + 0x800000 - 0x10000 + 0x16), 6);
 291                 cmdline_mac = 1;
 292                 return 1;
 293         } else {
 294                 return 0;
 295         }
 296 }
 297
 298 int
 299 ifxmips_has_brn_block(void)
 300 {
 301         return ifxmips_brn;
 302 }
 303 EXPORT_SYMBOL(ifxmips_has_brn_block);
 304
 305 struct ifxmips_board*
 306 ifxmips_find_board(void)
 307 {
 308         int i;
 309         if(!*board_name)
 310                 return 0;
 311         for(i = 0; i < ARRAY_SIZE(boards); i++)
 312                 if((boards[i].system_type == chiprev) && (!strcmp(boards[i].name, board_name)))
 313                         return &boards[i];
 314         return 0;
 315 }
 316
 317 int __init
 318 ifxmips_init_devices(void)
 319 {
 320         struct ifxmips_board *board = ifxmips_find_board();
 321
 322         chiprev = ifxmips_r32(IFXMIPS_MPS_CHIPID);
 323         ifxmips_brn = ifxmips_find_brn_block();
 324
 325         if(!cmdline_mac)
 326                 random_ether_addr(ifxmips_mii_mac);
 327
 328         if(!board)
 329         {
 330                 switch(chiprev)
 331                 {
 332                 case SYSTEM_DANUBE_CHIPID1:
 333                 case SYSTEM_DANUBE_CHIPID2:
 334                         board = &boards[0];
 335                         break;
 336                 case SYSTEM_TWINPASS_CHIPID:
 337                         board = &boards[1];
 338                         break;
 339                 }
 340         }
 341
 342         switch(board->type)
 343         {
 344         case EASY50712:
 345                 board->num_devs = ARRAY_SIZE(easy50712_devs);
 346                 ifxmips_led_data.num_leds = ARRAY_SIZE(easy50712_leds);
 347                 break;
 348         case EASY4010:
 349                 board->num_devs = ARRAY_SIZE(easy4010_devs);
 350                 ifxmips_led_data.num_leds = ARRAY_SIZE(easy4010_leds);
 351                 break;
 352         case ARV4519:
 353                 gpio_set_value(3, 0);
 354                 gpio_set_value(4, 0);
 355                 gpio_set_value(5, 0);
 356                 gpio_set_value(6, 0);
 357                 gpio_set_value(7, 1);
 358                 gpio_set_value(8, 1);
 359                 gpio_set_value(19, 0);
 360                 board->num_devs = ARRAY_SIZE(arv5419_devs);
 361 #ifdef CONFIG_LEDS_GPIO
 362                 ifxmips_gpio_led_data.num_leds = ARRAY_SIZE(arv4519_gpio_leds);
 363 #endif
 364                 break;
 365         }
 366 #ifdef CONFIG_LEDS_GPIO
 367         ifxmips_gpio_led_data.leds = board->gpio_leds;
 368 #endif
 369         ifxmips_led_data.leds = board->ifxmips_leds;
 370
 371         printk("%s:%s[%d]adding %d devs\n", __FILE__, __func__, __LINE__, board->num_devs);
 372
 373         ifxmips_gpio.resource = &board->reset_resource;
 374         ifxmips_gpio_dev.resource = &board->gpiodev_resource;
 375         if(board->pci_external_clock)
 376                 ifxmips_pci_external_clock = 1;
 377         printk("using board definition %s\n", board->name);
 378         return platform_add_devices(board->devs, board->num_devs);
 379 }
 380
 381 arch_initcall(ifxmips_init_devices);