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