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_11 = {
  54         .name                           = "96348GW-11",
  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
  66         .enet1 = {
  67                 .force_speed_100        = 1,
  68                 .force_duplex_full      = 1,
  69         },
  70
  71
  72         .has_ohci0 = 1,
  73         .has_pccard = 1,
  74         .has_ehci0 = 1,
  75 };
  76
  77 static struct board_info __initdata board_96348gw = {
  78         .name                           = "96348GW",
  79         .expected_cpu_id                = 0x6348,
  80
  81         .has_enet0                      = 1,
  82         .has_enet1                      = 1,
  83         .has_pci                        = 1,
  84
  85         .enet0 = {
  86                 .has_phy                = 1,
  87                 .use_internal_phy       = 1,
  88         },
  89         .enet1 = {
  90                 .force_speed_100        = 1,
  91                 .force_duplex_full      = 1,
  92         },
  93 };
  94 #endif
  95
  96 /*
  97  * known 6358 boards
  98  */
  99 #ifdef CONFIG_BCM63XX_CPU_6358
 100 static struct board_info __initdata board_96358vw = {
 101         .name                           = "96358VW",
 102         .expected_cpu_id                = 0x6358,
 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
 113         .enet1 = {
 114                 .force_speed_100        = 1,
 115                 .force_duplex_full      = 1,
 116         },
 117
 118
 119         .has_ohci0 = 1,
 120         .has_pccard = 1,
 121         .has_ehci0 = 1,
 122 };
 123
 124 static struct board_info __initdata board_96358vw2 = {
 125         .name                           = "96358VW2",
 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 #endif
 148
 149 /*
 150  * all boards
 151  */
 152 static const struct board_info __initdata *bcm963xx_boards[] = {
 153 #ifdef CONFIG_BCM63XX_CPU_6348
 154         &board_96348r,
 155         &board_96348gw,
 156         &board_96348gw_11,
 157 #endif
 158
 159 #ifdef CONFIG_BCM63XX_CPU_6358
 160         &board_96358vw,
 161         &board_96358vw2,
 162 #endif
 163 };
 164
 165 /*
 166  * early init callback, read nvram data from flash and checksum it
 167  */
 168 void __init board_prom_init(void)
 169 {
 170         unsigned int check_len, i;
 171         u8 *boot_addr, *cfe, *p;
 172         char cfe_version[32];
 173         u32 val;
 174
 175         /* read base address of boot chip select (0) */
 176         val = bcm_mpi_readl(MPI_CSBASE_REG(0));
 177         val &= MPI_CSBASE_BASE_MASK;
 178         boot_addr = (u8 *)KSEG1ADDR(val);
 179
 180         /* dump cfe version */
 181         cfe = boot_addr + BCM963XX_CFE_VERSION_OFFSET;
 182         if (!memcmp(cfe, "cfe-v", 5))
 183                 snprintf(cfe_version, sizeof(cfe_version), "%u.%u.%u-%u.%u",
 184                          cfe[5], cfe[6], cfe[7], cfe[8], cfe[9]);
 185         else
 186                 strcpy(cfe_version, "unknown");
 187         printk(KERN_INFO PFX "CFE version: %s\n", cfe_version);
 188
 189         /* extract nvram data */
 190         memcpy(&nvram, boot_addr + BCM963XX_NVRAM_OFFSET, sizeof(nvram));
 191
 192         /* check checksum before using data */
 193         if (nvram.version <= 4)
 194                 check_len = offsetof(struct bcm963xx_nvram, checksum_old);
 195         else
 196                 check_len = sizeof(nvram);
 197         val = 0;
 198         p = (u8 *)&nvram;
 199         while (check_len--)
 200                 val += *p;
 201         if (val) {
 202                 printk(KERN_ERR PFX "invalid nvram checksum\n");
 203                 return;
 204         }
 205
 206         /* find board by name */
 207         for (i = 0; i < ARRAY_SIZE(bcm963xx_boards); i++) {
 208                 if (strncmp(nvram.name, bcm963xx_boards[i]->name,
 209                             sizeof(nvram.name)))
 210                         continue;
 211                 /* copy, board desc array is marked initdata */
 212                 memcpy(&board, bcm963xx_boards[i], sizeof(board));
 213                 break;
 214         }
 215
 216         /* bail out if board is not found, will complain later */
 217         if (!board.name[0]) {
 218                 char name[17];
 219                 memcpy(name, nvram.name, 16);
 220                 name[16] = 0;
 221                 printk(KERN_ERR PFX "unknown bcm963xx board: %s\n",
 222                        name);
 223                 return;
 224         }
 225
 226         /* setup pin multiplexing depending on board enabled device,
 227          * this has to be done this early since PCI init is done
 228          * inside arch_initcall */
 229         val = 0;
 230
 231         if (board.has_pci) {
 232                 bcm63xx_pci_enabled = 1;
 233                 if (BCMCPU_IS_6348())
 234                         val |= GPIO_MODE_6348_G2_PCI;
 235         }
 236
 237         if (board.has_pccard) {
 238                 if (BCMCPU_IS_6348())
 239                         val |= GPIO_MODE_6348_G1_MII_PCCARD;
 240         }
 241
 242         if (board.has_enet0 && !board.enet0.use_internal_phy) {
 243                 if (BCMCPU_IS_6348())
 244                         val |= GPIO_MODE_6348_G3_EXT_MII |
 245                                 GPIO_MODE_6348_G0_EXT_MII;
 246         }
 247
 248         if (board.has_enet1 && !board.enet1.use_internal_phy) {
 249                 if (BCMCPU_IS_6348())
 250                         val |= GPIO_MODE_6348_G3_EXT_MII |
 251                                 GPIO_MODE_6348_G0_EXT_MII;
 252         }
 253
 254         bcm_gpio_writel(val, GPIO_MODE_REG);
 255 }
 256
 257 /*
 258  * second stage init callback, good time to panic if we couldn't
 259  * identify on which board we're running since early printk is working
 260  */
 261 void __init board_setup(void)
 262 {
 263         if (!board.name[0])
 264                 panic("unable to detect bcm963xx board");
 265         printk(KERN_INFO PFX "board name: %s\n", board.name);
 266
 267         /* make sure we're running on expected cpu */
 268         if (bcm63xx_get_cpu_id() != board.expected_cpu_id)
 269                 panic("unexpected CPU for bcm963xx board");
 270 }
 271
 272 /*
 273  * return board name for /proc/cpuinfo
 274  */
 275 const char *board_get_name(void)
 276 {
 277         return board.name;
 278 }
 279
 280 /*
 281  * register & return a new board mac address
 282  */
 283 static int board_get_mac_address(u8 *mac)
 284 {
 285         u8 *p;
 286         int count;
 287
 288         if (mac_addr_used >= nvram.mac_addr_count) {
 289                 printk(KERN_ERR PFX "not enough mac address\n");
 290                 return -ENODEV;
 291         }
 292
 293         memcpy(mac, nvram.mac_addr_base, ETH_ALEN);
 294         p = mac + ETH_ALEN - 1;
 295         count = mac_addr_used;
 296
 297         while (count--) {
 298                 do {
 299                         (*p)++;
 300                         if (*p != 0)
 301                                 break;
 302                         p--;
 303                 } while (p != mac);
 304         }
 305
 306         if (p == mac) {
 307                 printk(KERN_ERR PFX "unable to fetch mac address\n");
 308                 return -ENODEV;
 309         }
 310
 311         mac_addr_used++;
 312         return 0;
 313 }
 314
 315 static struct resource mtd_resources[] = {
 316         {
 317                 .start          = 0,    /* filled at runtime */
 318                 .end            = 0,    /* filled at runtime */
 319                 .flags          = IORESOURCE_MEM,
 320         }
 321 };
 322
 323 static struct platform_device mtd_dev = {
 324         .name                   = "bcm963xx-flash",
 325         .resource               = mtd_resources,
 326         .num_resources          = ARRAY_SIZE(mtd_resources),
 327 };
 328
 329 /*
 330  * third stage init callback, register all board devices.
 331  */
 332 int __init board_register_devices(void)
 333 {
 334         u32 val;
 335
 336         bcm63xx_uart_register();
 337
 338         if (board.has_pccard)
 339                 bcm63xx_pcmcia_register();
 340
 341         if (board.has_enet0 &&
 342             !board_get_mac_address(board.enet0.mac_addr))
 343                 bcm63xx_enet_register(0, &board.enet0);
 344
 345         if (board.has_enet1 &&
 346             !board_get_mac_address(board.enet1.mac_addr))
 347                 bcm63xx_enet_register(1, &board.enet1);
 348
 349         if (board.has_ohci0)
 350                 bcm63xx_ohci_register();
 351
 352         if (board.has_ehci0)
 353                 bcm63xx_ehci_register();
 354
 355
 356         /* read base address of boot chip select (0) */
 357         val = bcm_mpi_readl(MPI_CSBASE_REG(0));
 358         val &= MPI_CSBASE_BASE_MASK;
 359         mtd_resources[0].start = val;
 360         mtd_resources[0].end = 0x1FFFFFFF;
 361
 362         platform_device_register(&mtd_dev);
 363
 364         return 0;
 365 }
 366