target/linux/brcm63xx/files/arch/mips/bcm63xx/boards/board_bcm963xx.c

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
   7  */
   8
   9 #include <linux/init.h>
  10 #include <linux/kernel.h>
  11 #include <linux/string.h>
  12 #include <linux/platform_device.h>
  13 #include <linux/mtd/mtd.h>
  14 #include <linux/mtd/partitions.h>
  15 #include <linux/mtd/physmap.h>
  16 #include <asm/addrspace.h>
  17 #include <bcm63xx_board.h>
  18 #include <bcm63xx_cpu.h>
  19 #include <bcm63xx_regs.h>
  20 #include <bcm63xx_io.h>
  21 #include <bcm63xx_board.h>
  22 #include <bcm63xx_dev_pci.h>
  23 #include <bcm63xx_dev_uart.h>
  24 #include <bcm63xx_dev_wdt.h>
  25 #include <bcm63xx_dev_enet.h>
  26 #include <bcm63xx_dev_pcmcia.h>
  27 #include <bcm63xx_dev_usb_ohci.h>
  28 #include <bcm63xx_dev_usb_ehci.h>
  29 #include <board_bcm963xx.h>
  30
  31 #define PFX     "board_bcm963xx: "
  32
  33 static struct bcm963xx_nvram nvram;
  34 static unsigned int mac_addr_used = 0;
  35 static struct board_info board;
  36
  37 /*
  38  * known 6338 boards
  39  */
  40
  41 #ifdef CONFIG_BCM63XX_CPU_6338
  42 static struct board_info __initdata board_96338gw = {
  43         .name                           = "96338GW",
  44         .expected_cpu_id                = 0x6338,
  45
  46         .has_enet0                      = 1,
  47         .enet0 = {
  48                 .has_phy                = 1,
  49                 .use_internal_phy       = 1,
  50         },
  51
  52         .has_ohci0                      = 1,
  53 };
  54 #endif
  55
  56 /*
  57  * known 6348 boards
  58  */
  59 #ifdef CONFIG_BCM63XX_CPU_6348
  60 static struct board_info __initdata board_96348r = {
  61         .name                           = "96348R",
  62         .expected_cpu_id                = 0x6348,
  63
  64         .has_enet0                      = 1,
  65         .has_pci                        = 1,
  66
  67         .enet0 = {
  68                 .has_phy                = 1,
  69                 .use_internal_phy       = 1,
  70         },
  71 };
  72
  73 static struct board_info __initdata board_96348gw_10 = {
  74         .name                           = "96348GW-10",
  75         .expected_cpu_id                = 0x6348,
  76
  77         .has_enet0                      = 1,
  78         .has_enet1                      = 1,
  79         .has_pci                        = 1,
  80
  81         .enet0 = {
  82                 .has_phy                = 1,
  83                 .use_internal_phy       = 1,
  84         },
  85         .enet1 = {
  86                 .force_speed_100        = 1,
  87                 .force_duplex_full      = 1,
  88         },
  89
  90         .has_ohci0                      = 1,
  91         .has_pccard                     = 1,
  92         .has_ehci0                      = 1,
  93 };
  94
  95 static struct board_info __initdata board_96348gw_11 = {
  96         .name                           = "96348GW-11",
  97         .expected_cpu_id                = 0x6348,
  98
  99         .has_enet0                      = 1,
 100         .has_enet1                      = 1,
 101         .has_pci                        = 1,
 102
 103         .enet0 = {
 104                 .has_phy                = 1,
 105                 .use_internal_phy       = 1,
 106         },
 107
 108         .enet1 = {
 109                 .force_speed_100        = 1,
 110                 .force_duplex_full      = 1,
 111         },
 112
 113
 114         .has_ohci0 = 1,
 115         .has_pccard = 1,
 116         .has_ehci0 = 1,
 117 };
 118
 119 static struct board_info __initdata board_96348gw = {
 120         .name                           = "96348GW",
 121         .expected_cpu_id                = 0x6348,
 122
 123         .has_enet0                      = 1,
 124         .has_enet1                      = 1,
 125         .has_pci                        = 1,
 126
 127         .enet0 = {
 128                 .has_phy                = 1,
 129                 .use_internal_phy       = 1,
 130         },
 131         .enet1 = {
 132                 .force_speed_100        = 1,
 133                 .force_duplex_full      = 1,
 134         },
 135
 136         .has_ohci0 = 1,
 137 };
 138
 139 static struct board_info __initdata board_FAST2404 = {
 140         .name                           = "F@ST2404",
 141         .expected_cpu_id                = 0x6348,
 142
 143         .has_enet0                      = 1,
 144         .has_enet1                      = 1,
 145         .has_pci                        = 1,
 146
 147         .enet0 = {
 148                 .has_phy                = 1,
 149                 .use_internal_phy       = 1,
 150         },
 151
 152         .enet1 = {
 153                 .force_speed_100        = 1,
 154                 .force_duplex_full      = 1,
 155         },
 156
 157
 158         .has_ohci0 = 1,
 159         .has_pccard = 1,
 160         .has_ehci0 = 1,
 161 };
 162
 163 #endif
 164
 165 /*
 166  * known 6358 boards
 167  */
 168 #ifdef CONFIG_BCM63XX_CPU_6358
 169 static struct board_info __initdata board_96358vw = {
 170         .name                           = "96358VW",
 171         .expected_cpu_id                = 0x6358,
 172
 173         .has_enet0                      = 1,
 174         .has_enet1                      = 1,
 175         .has_pci                        = 1,
 176
 177         .enet0 = {
 178                 .has_phy                = 1,
 179                 .use_internal_phy       = 1,
 180         },
 181
 182         .enet1 = {
 183                 .force_speed_100        = 1,
 184                 .force_duplex_full      = 1,
 185         },
 186
 187
 188         .has_ohci0 = 1,
 189         .has_pccard = 1,
 190         .has_ehci0 = 1,
 191 };
 192
 193 static struct board_info __initdata board_96358vw2 = {
 194         .name                           = "96358VW2",
 195         .expected_cpu_id                = 0x6358,
 196
 197         .has_enet0                      = 1,
 198         .has_enet1                      = 1,
 199         .has_pci                        = 1,
 200
 201         .enet0 = {
 202                 .has_phy                = 1,
 203                 .use_internal_phy       = 1,
 204         },
 205
 206         .enet1 = {
 207                 .force_speed_100        = 1,
 208                 .force_duplex_full      = 1,
 209         },
 210
 211
 212         .has_ohci0 = 1,
 213         .has_pccard = 1,
 214         .has_ehci0 = 1,
 215 };
 216 #endif
 217
 218 /*
 219  * all boards
 220  */
 221 static const struct board_info __initdata *bcm963xx_boards[] = {
 222 #ifdef CONFIG_BCM63XX_CPU_6338
 223         &board_96338gw,
 224 #endif
 225 #ifdef CONFIG_BCM63XX_CPU_6348
 226         &board_96348r,
 227         &board_96348gw,
 228         &board_96348gw_10,
 229         &board_96348gw_11,
 230         &board_FAST2404,
 231 #endif
 232
 233 #ifdef CONFIG_BCM63XX_CPU_6358
 234         &board_96358vw,
 235         &board_96358vw2,
 236 #endif
 237 };
 238
 239 /*
 240  * early init callback, read nvram data from flash and checksum it
 241  */
 242 void __init board_prom_init(void)
 243 {
 244         unsigned int check_len, i;
 245         u8 *boot_addr, *cfe, *p;
 246         char cfe_version[32];
 247         u32 val;
 248
 249         /* read base address of boot chip select (0) */
 250         val = bcm_mpi_readl(MPI_CSBASE_REG(0));
 251         val &= MPI_CSBASE_BASE_MASK;
 252         boot_addr = (u8 *)KSEG1ADDR(val);
 253
 254         /* dump cfe version */
 255         cfe = boot_addr + BCM963XX_CFE_VERSION_OFFSET;
 256         if (!memcmp(cfe, "cfe-v", 5))
 257                 snprintf(cfe_version, sizeof(cfe_version), "%u.%u.%u-%u.%u",
 258                          cfe[5], cfe[6], cfe[7], cfe[8], cfe[9]);
 259         else
 260                 strcpy(cfe_version, "unknown");
 261         printk(KERN_INFO PFX "CFE version: %s\n", cfe_version);
 262
 263         /* extract nvram data */
 264         memcpy(&nvram, boot_addr + BCM963XX_NVRAM_OFFSET, sizeof(nvram));
 265
 266         /* check checksum before using data */
 267         if (nvram.version <= 4)
 268                 check_len = offsetof(struct bcm963xx_nvram, checksum_old);
 269         else
 270                 check_len = sizeof(nvram);
 271         val = 0;
 272         p = (u8 *)&nvram;
 273         while (check_len--)
 274                 val += *p;
 275         if (val) {
 276                 printk(KERN_ERR PFX "invalid nvram checksum\n");
 277                 return;
 278         }
 279
 280         /* find board by name */
 281         for (i = 0; i < ARRAY_SIZE(bcm963xx_boards); i++) {
 282                 if (strncmp(nvram.name, bcm963xx_boards[i]->name,
 283                             sizeof(nvram.name)))
 284                         continue;
 285                 /* copy, board desc array is marked initdata */
 286                 memcpy(&board, bcm963xx_boards[i], sizeof(board));
 287                 break;
 288         }
 289
 290         /* bail out if board is not found, will complain later */
 291         if (!board.name[0]) {
 292                 char name[17];
 293                 memcpy(name, nvram.name, 16);
 294                 name[16] = 0;
 295                 printk(KERN_ERR PFX "unknown bcm963xx board: %s\n",
 296                        name);
 297                 return;
 298         }
 299
 300         /* setup pin multiplexing depending on board enabled device,
 301          * this has to be done this early since PCI init is done
 302          * inside arch_initcall */
 303         val = 0;
 304
 305         if (board.has_pci) {
 306                 bcm63xx_pci_enabled = 1;
 307                 if (BCMCPU_IS_6348())
 308                         val |= GPIO_MODE_6348_G2_PCI;
 309         }
 310
 311         if (board.has_pccard) {
 312                 if (BCMCPU_IS_6348())
 313                         val |= GPIO_MODE_6348_G1_MII_PCCARD;
 314         }
 315
 316         if (board.has_enet0 && !board.enet0.use_internal_phy) {
 317                 if (BCMCPU_IS_6348())
 318                         val |= GPIO_MODE_6348_G3_EXT_MII |
 319                                 GPIO_MODE_6348_G0_EXT_MII;
 320         }
 321
 322         if (board.has_enet1 && !board.enet1.use_internal_phy) {
 323                 if (BCMCPU_IS_6348())
 324                         val |= GPIO_MODE_6348_G3_EXT_MII |
 325                                 GPIO_MODE_6348_G0_EXT_MII;
 326         }
 327
 328         bcm_gpio_writel(val, GPIO_MODE_REG);
 329 }
 330
 331 /*
 332  * second stage init callback, good time to panic if we couldn't
 333  * identify on which board we're running since early printk is working
 334  */
 335 void __init board_setup(void)
 336 {
 337         if (!board.name[0])
 338                 panic("unable to detect bcm963xx board");
 339         printk(KERN_INFO PFX "board name: %s\n", board.name);
 340
 341         /* make sure we're running on expected cpu */
 342         if (bcm63xx_get_cpu_id() != board.expected_cpu_id)
 343                 panic("unexpected CPU for bcm963xx board");
 344 }
 345
 346 /*
 347  * return board name for /proc/cpuinfo
 348  */
 349 const char *board_get_name(void)
 350 {
 351         return board.name;
 352 }
 353
 354 /*
 355  * register & return a new board mac address
 356  */
 357 static int board_get_mac_address(u8 *mac)
 358 {
 359         u8 *p;
 360         int count;
 361
 362         if (mac_addr_used >= nvram.mac_addr_count) {
 363                 printk(KERN_ERR PFX "not enough mac address\n");
 364                 return -ENODEV;
 365         }
 366
 367         memcpy(mac, nvram.mac_addr_base, ETH_ALEN);
 368         p = mac + ETH_ALEN - 1;
 369         count = mac_addr_used;
 370
 371         while (count--) {
 372                 do {
 373                         (*p)++;
 374                         if (*p != 0)
 375                                 break;
 376                         p--;
 377                 } while (p != mac);
 378         }
 379
 380         if (p == mac) {
 381                 printk(KERN_ERR PFX "unable to fetch mac address\n");
 382                 return -ENODEV;
 383         }
 384
 385         mac_addr_used++;
 386         return 0;
 387 }
 388
 389 static struct resource mtd_resources[] = {
 390         {
 391                 .start          = 0,    /* filled at runtime */
 392                 .end            = 0,    /* filled at runtime */
 393                 .flags          = IORESOURCE_MEM,
 394         }
 395 };
 396
 397 static struct platform_device mtd_dev = {
 398         .name                   = "bcm963xx-flash",
 399         .resource               = mtd_resources,
 400         .num_resources          = ARRAY_SIZE(mtd_resources),
 401 };
 402
 403 /*
 404  * third stage init callback, register all board devices.
 405  */
 406 int __init board_register_devices(void)
 407 {
 408         u32 val;
 409
 410         bcm63xx_uart_register();
 411         bcm63xx_wdt_register();
 412
 413         if (board.has_pccard)
 414                 bcm63xx_pcmcia_register();
 415
 416         if (board.has_enet0 &&
 417             !board_get_mac_address(board.enet0.mac_addr))
 418                 bcm63xx_enet_register(0, &board.enet0);
 419
 420         if (board.has_enet1 &&
 421             !board_get_mac_address(board.enet1.mac_addr))
 422                 bcm63xx_enet_register(1, &board.enet1);
 423
 424         if (board.has_ohci0)
 425                 bcm63xx_ohci_register();
 426
 427         if (board.has_ehci0)
 428                 bcm63xx_ehci_register();
 429
 430
 431         /* read base address of boot chip select (0) */
 432         val = bcm_mpi_readl(MPI_CSBASE_REG(0));
 433         val &= MPI_CSBASE_BASE_MASK;
 434         mtd_resources[0].start = val;
 435         mtd_resources[0].end = 0x1FFFFFFF;
 436
 437         platform_device_register(&mtd_dev);
 438
 439         return 0;
 440 }
 441