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