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