target/linux/brcm63xx/files/arch/mips/bcm63xx/boards/board_livebox.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 Florian Fainelli <florian@openwrt.org>
   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_livebox: "
  32
  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_livebox = {
  41         .name                           = "Livebox",
  42         .expected_cpu_id                = 0x6348,
  43
  44         .has_enet0                      = 1,
  45         .has_enet1                      = 1,
  46         .has_pci                        = 1,
  47
  48         .enet0 = {
  49                 .has_phy                = 1,
  50                 .use_internal_phy       = 1,
  51         },
  52
  53         .enet1 = {
  54                 .force_speed_100        = 1,
  55                 .force_duplex_full      = 1,
  56         },
  57
  58         .has_ohci0                      = 1,
  59         .has_pccard                     = 1,
  60         .has_ehci0                      = 1,
  61 };
  62 #endif
  63
  64 /*
  65  * all boards
  66  */
  67 static const struct board_info __initdata *bcm963xx_boards[] = {
  68 #ifdef CONFIG_BCM63XX_CPU_6348
  69         &board_livebox
  70 #endif
  71 };
  72
  73 /*
  74  * early init callback
  75  */
  76 void __init board_prom_init(void)
  77 {
  78         u32 val;
  79
  80         /* read base address of boot chip select (0) */
  81         val = bcm_mpi_readl(MPI_CSBASE_REG(0));
  82         val &= MPI_CSBASE_BASE_MASK;
  83
  84         /* assume board is a Livebox */
  85         memcpy(&board, bcm963xx_boards[0], sizeof(board));
  86
  87         /* setup pin multiplexing depending on board enabled device,
  88          * this has to be done this early since PCI init is done
  89          * inside arch_initcall */
  90         val = 0;
  91
  92         if (board.has_pci) {
  93                 bcm63xx_pci_enabled = 1;
  94                 if (BCMCPU_IS_6348())
  95                         val |= GPIO_MODE_6348_G2_PCI;
  96         }
  97
  98         if (board.has_pccard) {
  99                 if (BCMCPU_IS_6348())
 100                         val |= GPIO_MODE_6348_G1_MII_PCCARD;
 101         }
 102
 103         if (board.has_enet0 && !board.enet0.use_internal_phy) {
 104                 if (BCMCPU_IS_6348())
 105                         val |= GPIO_MODE_6348_G3_EXT_MII |
 106                                 GPIO_MODE_6348_G0_EXT_MII;
 107         }
 108
 109         if (board.has_enet1 && !board.enet1.use_internal_phy) {
 110                 if (BCMCPU_IS_6348())
 111                         val |= GPIO_MODE_6348_G3_EXT_MII |
 112                                 GPIO_MODE_6348_G0_EXT_MII;
 113         }
 114
 115         bcm_gpio_writel(val, GPIO_MODE_REG);
 116 }
 117
 118 /*
 119  * second stage init callback, good time to panic if we couldn't
 120  * identify on which board we're running since early printk is working
 121  */
 122 void __init board_setup(void)
 123 {
 124         if (!board.name[0])
 125                 panic("unable to detect bcm963xx board");
 126         printk(KERN_INFO PFX "board name: %s\n", board.name);
 127
 128         /* make sure we're running on expected cpu */
 129         if (bcm63xx_get_cpu_id() != board.expected_cpu_id)
 130                 panic("unexpected CPU for bcm963xx board");
 131 }
 132
 133 /*
 134  * return board name for /proc/cpuinfo
 135  */
 136 const char *board_get_name(void)
 137 {
 138         return board.name;
 139 }
 140
 141 /*
 142  * register & return a new board mac address
 143  */
 144
 145 static int board_get_mac_address(u8 *mac)
 146 {
 147         u8 default_mac[ETH_ALEN] = {0x00, 0x07, 0x3A, 0x00, 0x00, 0x00};
 148         u8 *p;
 149         int count;
 150
 151         memcpy(mac, default_mac, ETH_ALEN);
 152
 153         p = mac + ETH_ALEN - 1;
 154         count = mac_addr_used;
 155
 156         while (count--) {
 157                 do {
 158                         (*p)++;
 159                         if (*p != 0)
 160                                 break;
 161                         p--;
 162                 } while (p != mac);
 163         }
 164
 165         if (p == mac) {
 166                 printk(KERN_ERR PFX "unable to fetch mac address\n");
 167                 return -ENODEV;
 168         }
 169         mac_addr_used++;
 170
 171         return 0;
 172 }
 173
 174 static struct resource mtd_resources[] = {
 175         {
 176                 .start          = 0,    /* filled at runtime */
 177                 .end            = 0,    /* filled at runtime */
 178                 .flags          = IORESOURCE_MEM,
 179         }
 180 };
 181
 182 static struct platform_device mtd_dev = {
 183         .name                   = "bcm963xx-flash",
 184         .resource               = mtd_resources,
 185         .num_resources          = ARRAY_SIZE(mtd_resources),
 186 };
 187
 188
 189 /*
 190  * third stage init callback, register all board devices.
 191  */
 192 int __init board_register_devices(void)
 193 {
 194         u32 val;
 195
 196         bcm63xx_uart_register();
 197         bcm63xx_wdt_register();
 198
 199         if (board.has_pccard)
 200                 bcm63xx_pcmcia_register();
 201
 202         if (board.has_enet0 &&
 203             !board_get_mac_address(board.enet0.mac_addr))
 204                 bcm63xx_enet_register(0, &board.enet0);
 205
 206         if (board.has_enet1 &&
 207             !board_get_mac_address(board.enet1.mac_addr))
 208                 bcm63xx_enet_register(1, &board.enet1);
 209
 210         if (board.has_ohci0)
 211                 bcm63xx_ohci_register();
 212
 213         if (board.has_ehci0)
 214                 bcm63xx_ehci_register();
 215
 216
 217         /* read base address of boot chip select (0) */
 218         val = bcm_mpi_readl(MPI_CSBASE_REG(0));
 219         val &= MPI_CSBASE_BASE_MASK;
 220         mtd_resources[0].start = val;
 221         mtd_resources[0].end = 0x1FFFFFFF;
 222
 223         platform_device_register(&mtd_dev);
 224
 225         return 0;
 226 }
 227