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 <asm/bootinfo.h>
  29 #include <asm/reboot.h>
  30 #include <asm/time.h>
  31 #include <asm/irq.h>
  32 #include <asm/io.h>
  33 #include <linux/etherdevice.h>
  34 #include <asm/ifxmips/ifxmips.h>
  35 #include <linux/leds.h>
  36
  37 #define MAX_BOARD_NAME_LEN              32
  38 #define MAX_IFXMIPS_DEVS                9
  39
  40 #define SYSTEM_DANUBE                   "Danube"
  41 #define SYSTEM_DANUBE_CHIPID1   0x10129083
  42 #define SYSTEM_DANUBE_CHIPID2   0x3012B083
  43
  44 #define SYSTEM_TWINPASS                 "Twinpass"
  45 #define SYSTEM_TWINPASS_CHIPID  0x3012D083
  46
  47 extern int ifxmips_pci_external_clock;
  48
  49 static unsigned int chiprev;
  50 static int cmdline_mac = 0;
  51 char board_name[MAX_BOARD_NAME_LEN + 1] = { 0 };
  52
  53 struct ifxmips_board {
  54         char name[32];
  55         unsigned int system_type;
  56         struct platform_device *devs[MAX_IFXMIPS_DEVS];
  57         struct resource reset_resource;
  58         struct resource gpiodev_resource;
  59         int pci_external_clock;
  60         int num_devs;
  61 };
  62
  63 spinlock_t ebu_lock = SPIN_LOCK_UNLOCKED;
  64 EXPORT_SYMBOL_GPL(ebu_lock);
  65
  66 static unsigned char ifxmips_mii_mac[6];
  67 static int ifxmips_brn = 0;
  68
  69 static struct platform_device
  70 ifxmips_led =
  71 {
  72         .id = 0,
  73         .name = "ifxmips_led",
  74 };
  75
  76 static struct platform_device
  77 ifxmips_gpio =
  78 {
  79         .id = 0,
  80         .name = "ifxmips_gpio",
  81         .num_resources = 1,
  82 };
  83
  84 static struct platform_device
  85 ifxmips_mii =
  86 {
  87         .id = 0,
  88         .name = "ifxmips_mii0",
  89         .dev = {
  90                 .platform_data = ifxmips_mii_mac,
  91         }
  92 };
  93
  94 static struct platform_device
  95 ifxmips_wdt =
  96 {
  97         .id = 0,
  98         .name = "ifxmips_wdt",
  99 };
 100
 101 static struct resource
 102 ifxmips_mtd_resource = {
 103         .start  = IFXMIPS_FLASH_START,
 104         .end    = IFXMIPS_FLASH_START + IFXMIPS_FLASH_MAX - 1,
 105         .flags  = IORESOURCE_MEM,
 106 };
 107
 108 static struct platform_device
 109 ifxmips_mtd =
 110 {
 111         .id = 0,
 112         .name = "ifxmips_mtd",
 113         .num_resources  = 1,
 114         .resource   = &ifxmips_mtd_resource,
 115 };
 116
 117 static struct platform_device
 118 ifxmips_gpio_dev = {
 119         .name     = "GPIODEV",
 120         .id     = -1,
 121         .num_resources    =     1,
 122 };
 123
 124 #ifdef CONFIG_LEDS_GPIO
 125 static struct gpio_led arv4519_leds[] = {
 126         { .name = "ifxmips:green:power0", .gpio = 3, .active_low = 0, },
 127         { .name = "ifxmips:red:power1", .gpio = 7, .active_low = 1, },
 128         { .name = "ifxmips:green:adsl", .gpio = 4, .active_low = 1, },
 129         { .name = "ifxmips:green:internet0", .gpio = 5, .active_low = 0, },
 130         { .name = "ifxmips:red:internet1", .gpio = 8, .active_low = 1, },
 131         { .name = "ifxmips:green:wlan", .gpio = 6, .active_low = 1, },
 132         { .name = "ifxmips:green:usb", .gpio = 19, .active_low = 1, },
 133 };
 134
 135 static const struct gpio_led_platform_data arv4519_led_data = {
 136         .num_leds = ARRAY_SIZE(arv4519_leds),
 137         .leds = (void *) arv4519_leds,
 138 };
 139
 140 static struct platform_device arv4519_gpio_leds = {
 141         .name = "leds-gpio",
 142         .id = -1,
 143         .dev = {
 144                 .platform_data = (void *) &arv4519_led_data,
 145          }
 146 };
 147 #endif
 148
 149 const char*
 150 get_system_type(void)
 151 {
 152         chiprev = ifxmips_r32(IFXMIPS_MPS_CHIPID);
 153         switch(chiprev)
 154         {
 155         case SYSTEM_DANUBE_CHIPID1:
 156         case SYSTEM_DANUBE_CHIPID2:
 157                 return SYSTEM_DANUBE;
 158
 159         case SYSTEM_TWINPASS_CHIPID:
 160                 return SYSTEM_TWINPASS;
 161         }
 162
 163         return BOARD_SYSTEM_TYPE;
 164 }
 165
 166 static int __init
 167 ifxmips_set_board_type(char *str)
 168 {
 169         str = strchr(str, '=');
 170         if(!str)
 171                 goto out;
 172         str++;
 173         if(strlen(str) > MAX_BOARD_NAME_LEN)
 174                 goto out;
 175         strncpy(board_name, str, MAX_BOARD_NAME_LEN);
 176         printk("bootloader told us, that this is a %s board\n", board_name);
 177 out:
 178         return 1;
 179 }
 180 __setup("ifxmips_board", ifxmips_set_board_type);
 181
 182 #define IS_HEX(x) \
 183         (((x >='0' && x <= '9') || (x >='a' && x <= 'f') || (x >='A' && x <= 'F'))?(1):(0))
 184
 185 static int __init
 186 ifxmips_set_mii0_mac(char *str)
 187 {
 188         int i;
 189         str = strchr(str, '=');
 190         if(!str)
 191                 goto out;
 192         str++;
 193         if(strlen(str) != 17)
 194                 goto out;
 195         for(i = 0; i < 6; i++)
 196         {
 197                 if(!IS_HEX(str[3 * i]) || !IS_HEX(str[(3 * i) + 1]))
 198                         goto out;
 199                 if((i != 5) && (str[(3 * i) + 2] != ':'))
 200                         goto out;
 201                 ifxmips_mii_mac[i] = simple_strtoul(&str[3 * i], NULL, 16);
 202         }
 203         if(is_valid_ether_addr(ifxmips_mii_mac))
 204                 cmdline_mac = 1;
 205 out:
 206         return 1;
 207 }
 208 __setup("mii0_mac", ifxmips_set_mii0_mac);
 209
 210
 211 static struct ifxmips_board boards[] =
 212 {
 213         {
 214                 .name = "EASY50712",
 215                 .system_type = SYSTEM_DANUBE_CHIPID1,
 216                 .devs =
 217                 {
 218                         &ifxmips_led, &ifxmips_gpio, &ifxmips_mii,
 219                         &ifxmips_mtd, &ifxmips_wdt, &ifxmips_gpio_dev,
 220                 },
 221                 .reset_resource =
 222                 {
 223                         .name = "reset",
 224                         .start = 1,
 225                         .end = 15,
 226                 },
 227                 .gpiodev_resource =
 228                 {
 229                         .name = "gpio",
 230                         .start = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3) |
 231                                         (1 << 4) | (1 << 5) | (1 << 8) | (1 << 9) | (1 << 12),
 232                         .end = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3) |
 233                                         (1 << 4) | (1 << 5) | (1 << 8) | (1 << 9) | (1 << 12),
 234                 },
 235                 .num_devs = 6,
 236         }, {
 237                 .name = "EASY4010",
 238                 .system_type = SYSTEM_TWINPASS_CHIPID,
 239                 .devs =
 240                 {
 241                         &ifxmips_led, &ifxmips_gpio, &ifxmips_mii,
 242                         &ifxmips_mtd, &ifxmips_wdt, &ifxmips_gpio_dev,
 243                 },
 244                 .reset_resource =
 245                 {
 246                         .name = "reset",
 247                         .start = 1,
 248                         .end = 15,
 249                 },
 250                 .gpiodev_resource =
 251                 {
 252                         .name = "gpio",
 253                         .start = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3) |
 254                                         (1 << 4) | (1 << 5) | (1 << 8) | (1 << 9) | (1 << 12),
 255                         .end = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3) |
 256                                         (1 << 4) | (1 << 5) | (1 << 8) | (1 << 9) | (1 << 12),
 257                 },
 258                 .num_devs = 6,
 259         }, {
 260                 .name = "ARV4519",
 261                 .system_type = SYSTEM_DANUBE_CHIPID2,
 262                 .devs =
 263                 {
 264                         &ifxmips_gpio, &ifxmips_mii,
 265                         &ifxmips_mtd, &ifxmips_wdt, &ifxmips_gpio_dev,
 266 #ifdef CONFIG_LEDS_GPIO
 267                         &arv4519_gpio_leds,
 268 #endif
 269                 },
 270                 .reset_resource =
 271                 {
 272                         .name = "reset",
 273                         .start = 1,
 274                         .end = 12,
 275                 },
 276                 .gpiodev_resource =
 277                 {
 278                         .name = "gpio",
 279                         .start = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3) |
 280                                         (1 << 4) | (1 << 5) | (1 << 8) | (1 << 9) | (1 << 12),
 281                         .end = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3) |
 282                                         (1 << 4) | (1 << 5) | (1 << 8) | (1 << 9) | (1 << 12),
 283                 },
 284                 .pci_external_clock = 1,
 285                 .num_devs = 6,
 286         },
 287 };
 288
 289 int
 290 ifxmips_find_brn_block(void){
 291         unsigned char temp[8];
 292         memcpy_fromio(temp, (void*)KSEG1ADDR(IFXMIPS_FLASH_START + 0x800000 - 0x10000), 8);
 293         if(memcmp(temp, "BRN-BOOT", 8) == 0)
 294         {
 295                 if(!cmdline_mac)
 296                         memcpy_fromio(ifxmips_mii_mac, (void*)KSEG1ADDR(IFXMIPS_FLASH_START + 0x800000 - 0x10000 + 0x16), 6);
 297                 cmdline_mac = 1;
 298                 return 1;
 299         } else {
 300                 return 0;
 301         }
 302 }
 303
 304 int
 305 ifxmips_has_brn_block(void)
 306 {
 307         return ifxmips_brn;
 308 }
 309 EXPORT_SYMBOL(ifxmips_has_brn_block);
 310
 311 struct ifxmips_board*
 312 ifxmips_find_board(void)
 313 {
 314         int i;
 315         if(!*board_name)
 316                 return 0;
 317         for(i = 0; i < ARRAY_SIZE(boards); i++)
 318                 if((boards[i].system_type == chiprev) && (!strcmp(boards[i].name, board_name)))
 319                         return &boards[i];
 320         return 0;
 321 }
 322
 323 int __init
 324 ifxmips_init_devices(void)
 325 {
 326         struct ifxmips_board *board = ifxmips_find_board();
 327
 328         chiprev = ifxmips_r32(IFXMIPS_MPS_CHIPID);
 329         ifxmips_brn = ifxmips_find_brn_block();
 330
 331         if(!cmdline_mac)
 332                 random_ether_addr(ifxmips_mii_mac);
 333
 334         if(!board)
 335         {
 336                 switch(chiprev)
 337                 {
 338                 case SYSTEM_DANUBE_CHIPID1:
 339                 case SYSTEM_DANUBE_CHIPID2:
 340                         board = &boards[0];
 341                         break;
 342                 case SYSTEM_TWINPASS_CHIPID:
 343                         board = &boards[1];
 344                         break;
 345                 }
 346         }
 347         ifxmips_gpio.resource = &board->reset_resource;
 348         ifxmips_gpio_dev.resource = &board->gpiodev_resource;
 349         if(board->pci_external_clock)
 350                 ifxmips_pci_external_clock = 1;
 351         printk("using board definition %s\n", board->name);
 352         return platform_add_devices(board->devs, board->num_devs);
 353 }
 354
 355 arch_initcall(ifxmips_init_devices);