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 extern int ifxmips_pci_req_mask;
  59
  60 static unsigned int chiprev;
  61 static int cmdline_mac;
  62 char board_name[MAX_BOARD_NAME_LEN + 1] = { 0 };
  63
  64 struct ifxmips_board {
  65         int type;
  66         char name[32];
  67         unsigned int system_type;
  68         struct platform_device **devs;
  69         struct resource reset_resource;
  70         struct resource gpiodev_resource;
  71         struct gpio_led *ifxmips_leds;
  72         struct gpio_led *gpio_leds;
  73         int pci_external_clock;
  74         int pci_req_mask;
  75         int num_devs;
  76 };
  77
  78 DEFINE_SPINLOCK(ebu_lock);
  79 EXPORT_SYMBOL_GPL(ebu_lock);
  80
  81 static unsigned char ifxmips_ethaddr[6];
  82 static int ifxmips_brn;
  83
  84 static struct gpio_led_platform_data ifxmips_led_data;
  85
  86 static struct platform_device ifxmips_led = {
  87         .id = 0,
  88         .name = "ifxmips_led",
  89         .dev = {
  90                 .platform_data = (void *) &ifxmips_led_data,
  91         }
  92 };
  93
  94 static struct platform_device ifxmips_gpio = {
  95         .id = 0,
  96         .name = "ifxmips_gpio",
  97         .num_resources = 1,
  98 };
  99
 100 static struct platform_device ifxmips_mii = {
 101         .id = 0,
 102         .name = "ifxmips_mii0",
 103         .dev = {
 104                 .platform_data = ifxmips_ethaddr,
 105         }
 106 };
 107
 108 static struct platform_device ifxmips_wdt = {
 109         .id = 0,
 110         .name = "ifxmips_wdt",
 111 };
 112
 113 static struct resource ifxmips_mtd_resource = {
 114         .start  = IFXMIPS_FLASH_START,
 115         .end    = IFXMIPS_FLASH_START + IFXMIPS_FLASH_MAX - 1,
 116         .flags  = IORESOURCE_MEM,
 117 };
 118
 119 static struct platform_device ifxmips_mtd = {
 120         .id = 0,
 121         .name = "ifxmips_mtd",
 122         .num_resources  = 1,
 123         .resource   = &ifxmips_mtd_resource,
 124 };
 125
 126 static struct platform_device ifxmips_gpio_dev = {
 127         .name     = "GPIODEV",
 128         .id     = -1,
 129         .num_resources    =     1,
 130 };
 131
 132 #ifdef CONFIG_LEDS_GPIO
 133 static struct gpio_led arv4519_gpio_leds[] = {
 134         { .name = "ifx:green:power", .gpio = 3, .active_low = 1, },
 135         { .name = "ifx:red:power", .gpio = 7, .active_low = 1, },
 136         { .name = "ifx:green:adsl", .gpio = 4, .active_low = 1, },
 137         { .name = "ifx:green:internet", .gpio = 5, .active_low = 1, },
 138         { .name = "ifx:red:internet", .gpio = 8, .active_low = 1, },
 139         { .name = "ifx:green:wlan", .gpio = 6, .active_low = 1, },
 140         { .name = "ifx:green:usbpwr", .gpio = 14, .active_low = 1, },
 141         { .name = "ifx:green:usb", .gpio = 19, .active_low = 1, },
 142 };
 143
 144 static struct gpio_led_platform_data ifxmips_gpio_led_data;
 145
 146 static struct platform_device ifxmips_gpio_leds = {
 147         .name = "leds-gpio",
 148         .id = -1,
 149         .dev = {
 150                 .platform_data = (void *) &ifxmips_gpio_led_data,
 151         }
 152 };
 153 #endif
 154
 155 static struct resource dwc_usb_res[] = {
 156         {
 157                 .name = "dwc_usb_membase",
 158                 .flags = IORESOURCE_MEM,
 159                 .start = 0x1E101000,
 160                 .end = 0x1E101FFF
 161         },
 162         {
 163                 .name = "dwc_usb_irq",
 164                 .flags = IORESOURCE_IRQ,
 165                 .start = IFXMIPS_USB_INT,
 166         }
 167 };
 168
 169 static struct platform_device dwc_usb =
 170 {
 171         .id = 0,
 172         .name = "dwc_usb",
 173         .resource = dwc_usb_res,
 174         .num_resources = ARRAY_SIZE(dwc_usb_res),
 175 };
 176
 177 struct platform_device *easy50712_devs[] = {
 178         &ifxmips_led, &ifxmips_gpio, &ifxmips_mii,
 179         &ifxmips_mtd, &ifxmips_wdt, &ifxmips_gpio_dev, &dwc_usb
 180 };
 181
 182 struct platform_device *easy4010_devs[] = {
 183         &ifxmips_led, &ifxmips_gpio, &ifxmips_mii,
 184         &ifxmips_mtd, &ifxmips_wdt, &ifxmips_gpio_dev, &dwc_usb
 185 };
 186
 187 struct platform_device *arv5419_devs[] = {
 188         &ifxmips_gpio, &ifxmips_mii, &ifxmips_mtd,
 189         &ifxmips_gpio_dev, &ifxmips_wdt, &dwc_usb,
 190 #ifdef CONFIG_LEDS_GPIO
 191         &ifxmips_gpio_leds,
 192 #endif
 193 };
 194
 195 static struct gpio_led easy50712_leds[] = {
 196         { .name = "ifx:green:test0", .gpio = 0,},
 197         { .name = "ifx:green:test1", .gpio = 1,},
 198         { .name = "ifx:green:test2", .gpio = 2,},
 199         { .name = "ifx:green:test3", .gpio = 3,},
 200 };
 201
 202 static struct gpio_led easy4010_leds[] = {
 203         { .name = "ifx:green:test0", .gpio = 0,},
 204         { .name = "ifx:green:test1", .gpio = 1,},
 205         { .name = "ifx:green:test2", .gpio = 2,},
 206         { .name = "ifx:green:test3", .gpio = 3,},
 207 };
 208
 209 static struct ifxmips_board boards[] = {
 210         {
 211                 /* infineon eval kit */
 212                 .type = EASY50712,
 213                 .name = "EASY50712",
 214                 .system_type = SYSTEM_DANUBE_CHIPID1,
 215                 .devs = easy50712_devs,
 216                 .reset_resource = {.name = "reset", .start = 1, .end = 15,},
 217                 .gpiodev_resource = { .name = "gpio",
 218                         .start = (1 << 0) | (1 << 1),
 219                         .end = (1 << 0) | (1 << 1)},
 220                 .ifxmips_leds = easy50712_leds,
 221         }, {
 222                 /* infineon eval kit */
 223                 .type = EASY4010,
 224                 .name = "EASY4010",
 225                 .system_type = SYSTEM_TWINPASS_CHIPID,
 226                 .devs = easy4010_devs,
 227                 .reset_resource = {.name = "reset", .start = 1, .end = 15},
 228                 .gpiodev_resource = { .name = "gpio",
 229                         .start = (1 << 0) | (1 << 1),
 230                         .end = (1 << 0) | (1 << 1)},
 231                 .ifxmips_leds = easy4010_leds,
 232         }, {
 233                 /* arcaydian annex-a board used by thompson, airties, ... */
 234                 .type = ARV4519,
 235                 .name = "ARV4519",
 236                 .system_type = SYSTEM_DANUBE_CHIPID2,
 237                 .devs = arv5419_devs,
 238                 .reset_resource = {.name = "reset", .start = 1, .end = 14},
 239                 .pci_external_clock = 1,
 240                 .gpio_leds = arv4519_gpio_leds,
 241         },
 242 };
 243
 244 const char *get_system_type(void)
 245 {
 246         chiprev = (ifxmips_r32(IFXMIPS_MPS_CHIPID) & 0x0FFFFFFF);
 247
 248         switch (chiprev) {
 249         case SYSTEM_DANUBE_CHIPID1:
 250         case SYSTEM_DANUBE_CHIPID2:
 251                 return SYSTEM_DANUBE;
 252
 253         case SYSTEM_TWINPASS_CHIPID:
 254                 return SYSTEM_TWINPASS;
 255         }
 256
 257         return BOARD_SYSTEM_TYPE;
 258 }
 259
 260 static int __init ifxmips_set_board_type(char *str)
 261 {
 262         str = strchr(str, '=');
 263         if (!str)
 264                 goto out;
 265         str++;
 266         if (strlen(str) > MAX_BOARD_NAME_LEN)
 267                 goto out;
 268         strncpy(board_name, str, MAX_BOARD_NAME_LEN);
 269         printk(KERN_INFO "bootloader told us, that this is a %s board\n",
 270                 board_name);
 271 out:
 272         return 1;
 273 }
 274 __setup("ifxmips_board", ifxmips_set_board_type);
 275
 276 static int __init ifxmips_set_ethaddr(char *str)
 277 {
 278 #define IS_HEX(x) \
 279         (((x >= '0' && x <= '9') || (x >= 'a' && x <= 'f') \
 280                 || (x >= 'A' && x <= 'F')) ? (1) : (0))
 281         int i;
 282         str = strchr(str, '=');
 283         if (!str)
 284                 goto out;
 285         str++;
 286         if (strlen(str) != 17)
 287                 goto out;
 288         for (i = 0; i < 6; i++) {
 289                 if (!IS_HEX(str[3 * i]) || !IS_HEX(str[(3 * i) + 1]))
 290                         goto out;
 291                 if ((i != 5) && (str[(3 * i) + 2] != ':'))
 292                         goto out;
 293                 ifxmips_ethaddr[i] = simple_strtoul(&str[3 * i], NULL, 16);
 294         }
 295         if (is_valid_ether_addr(ifxmips_ethaddr))
 296                 cmdline_mac = 1;
 297 out:
 298         return 1;
 299 }
 300 __setup("ethaddr", ifxmips_set_ethaddr);
 301
 302 int ifxmips_find_brn_block(void)
 303 {
 304         unsigned char temp[8];
 305         memcpy_fromio(temp,
 306                 (void *)KSEG1ADDR(IFXMIPS_FLASH_START + 0x800000 - 0x10000), 8);
 307         if (memcmp(temp, "BRN-BOOT", 8) == 0) {
 308                 if (!cmdline_mac)
 309                         memcpy_fromio(ifxmips_ethaddr,
 310                                 (void *)KSEG1ADDR(IFXMIPS_FLASH_START +
 311                                         0x800000 - 0x10000 + 0x16), 6);
 312                 if (is_valid_ether_addr(ifxmips_ethaddr))
 313                         cmdline_mac = 1;
 314                 return 1;
 315         } else {
 316                 return 0;
 317         }
 318 }
 319
 320 int ifxmips_has_brn_block(void)
 321 {
 322         return ifxmips_brn;
 323 }
 324 EXPORT_SYMBOL(ifxmips_has_brn_block);
 325
 326 struct ifxmips_board *ifxmips_find_board(void)
 327 {
 328         int i;
 329         if (!*board_name)
 330                 return 0;
 331         for (i = 0; i < ARRAY_SIZE(boards); i++)
 332                 if ((boards[i].system_type == chiprev) &&
 333                     (!strcmp(boards[i].name, board_name)))
 334                         return &boards[i];
 335         return 0;
 336 }
 337
 338 int __init ifxmips_init_devices(void)
 339 {
 340         struct ifxmips_board *board;
 341
 342         chiprev = (ifxmips_r32(IFXMIPS_MPS_CHIPID) & 0x0FFFFFFF);
 343         board = ifxmips_find_board();
 344         ifxmips_brn = ifxmips_find_brn_block();
 345
 346         if (!cmdline_mac)
 347                 random_ether_addr(ifxmips_ethaddr);
 348
 349         if (!board) {
 350                 switch (chiprev) {
 351                 case SYSTEM_DANUBE_CHIPID1:
 352                 case SYSTEM_DANUBE_CHIPID2:
 353                 default:
 354                         board = &boards[0];
 355                         break;
 356                 case SYSTEM_TWINPASS_CHIPID:
 357                         board = &boards[1];
 358                         break;
 359                 }
 360         }
 361
 362         switch (board->type) {
 363         case EASY50712:
 364                 board->num_devs = ARRAY_SIZE(easy50712_devs);
 365                 ifxmips_led_data.num_leds = ARRAY_SIZE(easy50712_leds);
 366                 break;
 367         case EASY4010:
 368                 board->num_devs = ARRAY_SIZE(easy4010_devs);
 369                 ifxmips_led_data.num_leds = ARRAY_SIZE(easy4010_leds);
 370                 break;
 371         case ARV4519:
 372                 /* set some sane defaults for the gpios */
 373                 gpio_set_value(3, 0);
 374                 gpio_set_value(4, 0);
 375                 gpio_set_value(5, 0);
 376                 gpio_set_value(6, 0);
 377                 gpio_set_value(7, 1);
 378                 gpio_set_value(8, 1);
 379                 gpio_set_value(19, 0);
 380                 board->num_devs = ARRAY_SIZE(arv5419_devs);
 381 #ifdef CONFIG_LEDS_GPIO
 382                 ifxmips_gpio_led_data.num_leds = ARRAY_SIZE(arv4519_gpio_leds);
 383 #endif
 384                 break;
 385         }
 386 #ifdef CONFIG_LEDS_GPIO
 387         ifxmips_gpio_led_data.leds = board->gpio_leds;
 388 #endif
 389         ifxmips_led_data.leds = board->ifxmips_leds;
 390
 391         printk(KERN_INFO "%s: adding %d devs\n",
 392                 __func__, board->num_devs);
 393
 394         ifxmips_gpio.resource = &board->reset_resource;
 395         ifxmips_gpio_dev.resource = &board->gpiodev_resource;
 396         if (board->pci_external_clock)
 397                 ifxmips_pci_external_clock = 1;
 398         if (board->pci_req_mask)
 399                 ifxmips_pci_req_mask = board->pci_req_mask;
 400         printk(KERN_INFO "using board definition %s\n", board->name);
 401         return platform_add_devices(board->devs, board->num_devs);
 402 }
 403
 404 arch_initcall(ifxmips_init_devices);