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
  35 #include <asm/bootinfo.h>
  36 #include <asm/irq.h>
  37
  38 #include <ifxmips.h>
  39 #include <ifxmips_irq.h>
  40
  41 #define MAX_BOARD_NAME_LEN              32
  42 #define MAX_IFXMIPS_DEVS                9
  43
  44 #define SYSTEM_DANUBE                   "Danube"
  45 #define SYSTEM_DANUBE_CHIPID1   0x00129083
  46 #define SYSTEM_DANUBE_CHIPID2   0x0012B083
  47
  48 #define SYSTEM_TWINPASS                 "Twinpass"
  49 #define SYSTEM_TWINPASS_CHIPID  0x0012D083
  50
  51 enum {
  52         EASY50712,
  53         EASY4010,
  54         ARV4519,
  55 };
  56
  57 extern int ifxmips_pci_external_clock;
  58
  59 static unsigned int chiprev;
  60 static int cmdline_mac;
  61 char board_name[MAX_BOARD_NAME_LEN + 1] = { 0 };
  62
  63 struct ifxmips_board {
  64         int type;
  65         char name[32];
  66         unsigned int system_type;
  67         struct platform_device **devs;
  68         struct resource reset_resource;
  69         struct resource gpiodev_resource;
  70         struct gpio_led *ifxmips_leds;
  71         struct gpio_led *gpio_leds;
  72         int pci_external_clock;
  73         int num_devs;
  74 };
  75
  76 DEFINE_SPINLOCK(ebu_lock);
  77 EXPORT_SYMBOL_GPL(ebu_lock);
  78
  79 static unsigned char ifxmips_ethaddr[6];
  80 static int ifxmips_brn;
  81
  82 static struct gpio_led_platform_data ifxmips_led_data;
  83
  84 static struct platform_device ifxmips_led = {
  85         .id = 0,
  86         .name = "ifxmips_led",
  87         .dev = {
  88                 .platform_data = (void *) &ifxmips_led_data,
  89         }
  90 };
  91
  92 static struct platform_device ifxmips_gpio = {
  93         .id = 0,
  94         .name = "ifxmips_gpio",
  95         .num_resources = 1,
  96 };
  97
  98 static struct platform_device ifxmips_mii = {
  99         .id = 0,
 100         .name = "ifxmips_mii0",
 101         .dev = {
 102                 .platform_data = ifxmips_ethaddr,
 103         }
 104 };
 105
 106 static struct platform_device ifxmips_wdt = {
 107         .id = 0,
 108         .name = "ifxmips_wdt",
 109 };
 110
 111 static struct resource ifxmips_mtd_resource = {
 112         .start  = IFXMIPS_FLASH_START,
 113         .end    = IFXMIPS_FLASH_START + IFXMIPS_FLASH_MAX - 1,
 114         .flags  = IORESOURCE_MEM,
 115 };
 116
 117 static struct platform_device ifxmips_mtd = {
 118         .id = 0,
 119         .name = "ifxmips_mtd",
 120         .num_resources  = 1,
 121         .resource   = &ifxmips_mtd_resource,
 122 };
 123
 124 static struct platform_device ifxmips_gpio_dev = {
 125         .name     = "GPIODEV",
 126         .id     = -1,
 127         .num_resources    =     1,
 128 };
 129
 130 #ifdef CONFIG_LEDS_GPIO
 131 static struct gpio_led arv4519_gpio_leds[] = {
 132         { .name = "ifx:green:power", .gpio = 3, .active_low = 1, },
 133         { .name = "ifx:red:power", .gpio = 7, .active_low = 1, },
 134         { .name = "ifx:green:adsl", .gpio = 4, .active_low = 1, },
 135         { .name = "ifx:green:internet", .gpio = 5, .active_low = 1, },
 136         { .name = "ifx:red:internet", .gpio = 8, .active_low = 1, },
 137         { .name = "ifx:green:wlan", .gpio = 6, .active_low = 1, },
 138         { .name = "ifx:green:usbpwr", .gpio = 14, .active_low = 1, },
 139         { .name = "ifx:green:usb", .gpio = 19, .active_low = 1, },
 140 };
 141
 142 static struct gpio_led_platform_data ifxmips_gpio_led_data;
 143
 144 static struct platform_device ifxmips_gpio_leds = {
 145         .name = "leds-gpio",
 146         .id = -1,
 147         .dev = {
 148                 .platform_data = (void *) &ifxmips_gpio_led_data,
 149         }
 150 };
 151 #endif
 152
 153 static struct resource dwc_usb_res[] = {
 154         {
 155                 .name = "dwc_usb_membase",
 156                 .flags = IORESOURCE_MEM,
 157                 .start = 0x1E101000,
 158                 .end = 0x1E101FFF
 159         },
 160         {
 161                 .name = "dwc_usb_irq",
 162                 .flags = IORESOURCE_IRQ,
 163                 .start = IFXMIPS_USB_INT,
 164         }
 165 };
 166
 167 static struct platform_device dwc_usb =
 168 {
 169         .id = 0,
 170         .name = "dwc_usb",
 171         .resource = dwc_usb_res,
 172         .num_resources = ARRAY_SIZE(dwc_usb_res),
 173 };
 174
 175 struct platform_device *easy50712_devs[] = {
 176         &ifxmips_led, &ifxmips_gpio, &ifxmips_mii,
 177         &ifxmips_mtd, &ifxmips_wdt, &ifxmips_gpio_dev, &dwc_usb
 178 };
 179
 180 struct platform_device *easy4010_devs[] = {
 181         &ifxmips_led, &ifxmips_gpio, &ifxmips_mii,
 182         &ifxmips_mtd, &ifxmips_wdt, &ifxmips_gpio_dev, &dwc_usb
 183 };
 184
 185 struct platform_device *arv5419_devs[] = {
 186         &ifxmips_gpio, &ifxmips_mii, &ifxmips_mtd,
 187         &ifxmips_gpio_dev, &ifxmips_wdt, &dwc_usb,
 188 #ifdef CONFIG_LEDS_GPIO
 189         &ifxmips_gpio_leds,
 190 #endif
 191 };
 192
 193 static struct gpio_led easy50712_leds[] = {
 194         { .name = "ifx:green:test0", .gpio = 0,},
 195         { .name = "ifx:green:test1", .gpio = 1,},
 196         { .name = "ifx:green:test2", .gpio = 2,},
 197         { .name = "ifx:green:test3", .gpio = 3,},
 198 };
 199
 200 static struct gpio_led easy4010_leds[] = {
 201         { .name = "ifx:green:test0", .gpio = 0,},
 202         { .name = "ifx:green:test1", .gpio = 1,},
 203         { .name = "ifx:green:test2", .gpio = 2,},
 204         { .name = "ifx:green:test3", .gpio = 3,},
 205 };
 206
 207 static struct ifxmips_board boards[] = {
 208         {
 209                 /* infineon eval kit */
 210                 .type = EASY50712,
 211                 .name = "EASY50712",
 212                 .system_type = SYSTEM_DANUBE_CHIPID1,
 213                 .devs = easy50712_devs,
 214                 .reset_resource = {.name = "reset", .start = 1, .end = 15,},
 215                 .gpiodev_resource = { .name = "gpio",
 216                         .start = (1 << 0) | (1 << 1),
 217                         .end = (1 << 0) | (1 << 1)},
 218                 .ifxmips_leds = easy50712_leds,
 219         }, {
 220                 /* infineon eval kit */
 221                 .type = EASY4010,
 222                 .name = "EASY4010",
 223                 .system_type = SYSTEM_TWINPASS_CHIPID,
 224                 .devs = easy4010_devs,
 225                 .reset_resource = {.name = "reset", .start = 1, .end = 15},
 226                 .gpiodev_resource = { .name = "gpio",
 227                         .start = (1 << 0) | (1 << 1),
 228                         .end = (1 << 0) | (1 << 1)},
 229                 .ifxmips_leds = easy4010_leds,
 230         }, {
 231                 /* arcaydian annex-a board used by thompson, airties, ... */
 232                 .type = ARV4519,
 233                 .name = "ARV4519",
 234                 .system_type = SYSTEM_DANUBE_CHIPID2,
 235                 .devs = arv5419_devs,
 236                 .reset_resource = {.name = "reset", .start = 1, .end = 14},
 237                 .pci_external_clock = 1,
 238                 .gpio_leds = arv4519_gpio_leds,
 239         },
 240 };
 241
 242 const char *get_system_type(void)
 243 {
 244         chiprev = (ifxmips_r32(IFXMIPS_MPS_CHIPID) & 0x0FFFFFFF);
 245
 246         switch (chiprev) {
 247         case SYSTEM_DANUBE_CHIPID1:
 248         case SYSTEM_DANUBE_CHIPID2:
 249                 return SYSTEM_DANUBE;
 250
 251         case SYSTEM_TWINPASS_CHIPID:
 252                 return SYSTEM_TWINPASS;
 253         }
 254
 255         return BOARD_SYSTEM_TYPE;
 256 }
 257
 258 static int __init ifxmips_set_board_type(char *str)
 259 {
 260         str = strchr(str, '=');
 261         if (!str)
 262                 goto out;
 263         str++;
 264         if (strlen(str) > MAX_BOARD_NAME_LEN)
 265                 goto out;
 266         strncpy(board_name, str, MAX_BOARD_NAME_LEN);
 267         printk(KERN_INFO "bootloader told us, that this is a %s board\n",
 268                 board_name);
 269 out:
 270         return 1;
 271 }
 272 __setup("ifxmips_board", ifxmips_set_board_type);
 273
 274 static int __init ifxmips_set_ethaddr(char *str)
 275 {
 276 #define IS_HEX(x) \
 277         (((x >= '0' && x <= '9') || (x >= 'a' && x <= 'f') \
 278                 || (x >= 'A' && x <= 'F')) ? (1) : (0))
 279         int i;
 280         str = strchr(str, '=');
 281         if (!str)
 282                 goto out;
 283         str++;
 284         if (strlen(str) != 17)
 285                 goto out;
 286         for (i = 0; i < 6; i++) {
 287                 if (!IS_HEX(str[3 * i]) || !IS_HEX(str[(3 * i) + 1]))
 288                         goto out;
 289                 if ((i != 5) && (str[(3 * i) + 2] != ':'))
 290                         goto out;
 291                 ifxmips_ethaddr[i] = simple_strtoul(&str[3 * i], NULL, 16);
 292         }
 293         if (is_valid_ether_addr(ifxmips_ethaddr))
 294                 cmdline_mac = 1;
 295 out:
 296         return 1;
 297 }
 298 __setup("ethaddr", ifxmips_set_ethaddr);
 299
 300 int ifxmips_find_brn_block(void)
 301 {
 302         unsigned char temp[8];
 303         memcpy_fromio(temp,
 304                 (void *)KSEG1ADDR(IFXMIPS_FLASH_START + 0x800000 - 0x10000), 8);
 305         if (memcmp(temp, "BRN-BOOT", 8) == 0) {
 306                 if (!cmdline_mac)
 307                         memcpy_fromio(ifxmips_ethaddr,
 308                                 (void *)KSEG1ADDR(IFXMIPS_FLASH_START +
 309                                         0x800000 - 0x10000 + 0x16), 6);
 310                 if (is_valid_ether_addr(ifxmips_ethaddr))
 311                         cmdline_mac = 1;
 312                 return 1;
 313         } else {
 314                 return 0;
 315         }
 316 }
 317
 318 int ifxmips_has_brn_block(void)
 319 {
 320         return ifxmips_brn;
 321 }
 322 EXPORT_SYMBOL(ifxmips_has_brn_block);
 323
 324 struct ifxmips_board *ifxmips_find_board(void)
 325 {
 326         int i;
 327         if (!*board_name)
 328                 return 0;
 329         for (i = 0; i < ARRAY_SIZE(boards); i++)
 330                 if ((boards[i].system_type == chiprev) &&
 331                     (!strcmp(boards[i].name, board_name)))
 332                         return &boards[i];
 333         return 0;
 334 }
 335
 336 int __init ifxmips_init_devices(void)
 337 {
 338         struct ifxmips_board *board = ifxmips_find_board();
 339
 340         chiprev = (ifxmips_r32(IFXMIPS_MPS_CHIPID) & 0x0FFFFFFF);
 341         ifxmips_brn = ifxmips_find_brn_block();
 342
 343         if (!cmdline_mac)
 344                 random_ether_addr(ifxmips_ethaddr);
 345
 346         if (!board) {
 347                 switch (chiprev) {
 348                 case SYSTEM_DANUBE_CHIPID1:
 349                 case SYSTEM_DANUBE_CHIPID2:
 350                 default:
 351                         board = &boards[0];
 352                         break;
 353                 case SYSTEM_TWINPASS_CHIPID:
 354                         board = &boards[1];
 355                         break;
 356                 }
 357         }
 358
 359         switch (board->type) {
 360         case EASY50712:
 361                 board->num_devs = ARRAY_SIZE(easy50712_devs);
 362                 ifxmips_led_data.num_leds = ARRAY_SIZE(easy50712_leds);
 363                 break;
 364         case EASY4010:
 365                 board->num_devs = ARRAY_SIZE(easy4010_devs);
 366                 ifxmips_led_data.num_leds = ARRAY_SIZE(easy4010_leds);
 367                 break;
 368         case ARV4519:
 369                 /* set some sane defaults for the gpios */
 370                 gpio_set_value(3, 0);
 371                 gpio_set_value(4, 0);
 372                 gpio_set_value(5, 0);
 373                 gpio_set_value(6, 0);
 374                 gpio_set_value(7, 1);
 375                 gpio_set_value(8, 1);
 376                 gpio_set_value(19, 0);
 377                 board->num_devs = ARRAY_SIZE(arv5419_devs);
 378 #ifdef CONFIG_LEDS_GPIO
 379                 ifxmips_gpio_led_data.num_leds = ARRAY_SIZE(arv4519_gpio_leds);
 380 #endif
 381                 break;
 382         }
 383 #ifdef CONFIG_LEDS_GPIO
 384         ifxmips_gpio_led_data.leds = board->gpio_leds;
 385 #endif
 386         ifxmips_led_data.leds = board->ifxmips_leds;
 387
 388         printk(KERN_INFO "%s: adding %d devs\n",
 389                 __func__, board->num_devs);
 390
 391         ifxmips_gpio.resource = &board->reset_resource;
 392         ifxmips_gpio_dev.resource = &board->gpiodev_resource;
 393         if (board->pci_external_clock)
 394                 ifxmips_pci_external_clock = 1;
 395         printk(KERN_INFO "using board definition %s\n", board->name);
 396         return platform_add_devices(board->devs, board->num_devs);
 397 }
 398
 399 arch_initcall(ifxmips_init_devices);