target/linux/ifxmips/files/arch/mips/ifxmips/board.c

   1 /*
   2  *   This program is free software; you can redistribute it and/or modify
   3  *   it under the terms of the GNU General Public License as published by
   4  *   the Free Software Foundation; either version 2 of the License, or
   5  *   (at your option) any later version.
   6  *
   7  *   This program is distributed in the hope that it will be useful,
   8  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  *   GNU General Public License for more details.
  11  *
  12  *   You should have received a copy of the GNU General Public License
  13  *   along with this program; if not, write to the Free Software
  14  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  15  *
  16  *   Copyright (C) 2007 John Crispin <blogic@openwrt.org>
  17  */
  18
  19 #include <linux/autoconf.h>
  20 #include <linux/init.h>
  21 #include <linux/module.h>
  22 #include <linux/types.h>
  23 #include <linux/string.h>
  24 #include <linux/mtd/physmap.h>
  25 #include <linux/kernel.h>
  26 #include <linux/reboot.h>
  27 #include <linux/platform_device.h>
  28 #include <asm/bootinfo.h>
  29 #include <asm/reboot.h>
  30 #include <asm/time.h>
  31 #include <asm/irq.h>
  32 #include <asm/io.h>
  33 #include <linux/etherdevice.h>
  34 #include <asm/ifxmips/ifxmips.h>
  35 #include <asm/ifxmips/ifxmips_mii0.h>
  36
  37 #define MAX_IFXMIPS_DEVS                9
  38
  39 #define BOARD_DANUBE                    "Danube"
  40 #define BOARD_DANUBE_CHIPID             0x10129083
  41
  42 #define BOARD_TWINPASS                  "Twinpass"
  43 #define BOARD_TWINPASS_CHIPID   0x3012D083
  44
  45 static unsigned int chiprev;
  46 static struct platform_device *ifxmips_devs[MAX_IFXMIPS_DEVS];
  47 static int cmdline_mac = 0;
  48
  49 spinlock_t ebu_lock = SPIN_LOCK_UNLOCKED;
  50 EXPORT_SYMBOL_GPL(ebu_lock);
  51
  52 static struct ifxmips_mac ifxmips_mii_mac;
  53
  54 static struct platform_device
  55 ifxmips_led[] =
  56 {
  57         {
  58                 .id = 0,
  59                 .name = "ifxmips_led",
  60         },
  61 };
  62
  63 static struct platform_device
  64 ifxmips_gpio[] =
  65 {
  66         {
  67                 .id = 0,
  68                 .name = "ifxmips_gpio",
  69         },
  70 };
  71
  72 static struct platform_device
  73 ifxmips_mii[] =
  74 {
  75         {
  76                 .id = 0,
  77                 .name = "ifxmips_mii0",
  78                 .dev = {
  79                         .platform_data = &ifxmips_mii_mac,
  80                 }
  81         },
  82 };
  83
  84 static struct platform_device
  85 ifxmips_wdt[] =
  86 {
  87         {
  88                 .id = 0,
  89                 .name = "ifxmips_wdt",
  90         },
  91 };
  92
  93 static struct resource
  94 ifxmips_mtd_resource = {
  95         .start  = IFXMIPS_FLASH_START,
  96         .end    = IFXMIPS_FLASH_START + IFXMIPS_FLASH_MAX - 1,
  97         .flags  = IORESOURCE_MEM,
  98 };
  99
 100 static struct platform_device
 101 ifxmips_mtd[] =
 102 {
 103         {
 104                 .id = 0,
 105                 .name = "ifxmips_mtd",
 106                 .num_resources  = 1,
 107                 .resource   = &ifxmips_mtd_resource,
 108         },
 109 };
 110
 111 #ifdef CONFIG_GPIO_DEVICE
 112 static struct resource
 113 ifxmips_gpio_dev_resources[] = {
 114         {
 115                 .name = "gpio",
 116                 .flags  = 0,
 117                 .start = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3) |
 118                         (1 << 4) | (1 << 5) | (1 << 8) | (1 << 9) | (1 << 12),
 119                 .end = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3) |
 120                         (1 << 4) | (1 << 5) | (1 << 8) | (1 << 9) | (1 << 12),
 121         },
 122 };
 123
 124 static struct platform_device
 125 ifxmips_gpio_dev[] = {
 126         {
 127                 .name     = "GPIODEV",
 128                 .id     = -1,
 129                 .num_resources    = ARRAY_SIZE(ifxmips_gpio_dev_resources),
 130                 .resource   = ifxmips_gpio_dev_resources,
 131         }
 132 };
 133 #endif
 134
 135 const char*
 136 get_system_type(void)
 137 {
 138         chiprev = ifxmips_r32(IFXMIPS_MPS_CHIPID);
 139         switch(chiprev)
 140         {
 141         case BOARD_DANUBE_CHIPID:
 142                 return BOARD_DANUBE;
 143
 144         case BOARD_TWINPASS_CHIPID:
 145                 return BOARD_TWINPASS;
 146         }
 147
 148         return BOARD_SYSTEM_TYPE;
 149 }
 150
 151 #define IS_HEX(x)       (((x >='0' && x <= '9') || (x >='a' && x <= 'f') || (x >='A' && x <= 'F'))?(1):(0))
 152 static int __init
 153 ifxmips_set_mii0_mac(char *str)
 154 {
 155         int i;
 156         str = strchr(str, '=');
 157         if(!str)
 158                 goto out;
 159         str++;
 160         if(strlen(str) != 17)
 161                 goto out;
 162         for(i = 0; i < 6; i++)
 163         {
 164                 if(!IS_HEX(str[3 * i]) || !IS_HEX(str[(3 * i) + 1]))
 165                         goto out;
 166                 if((i != 5) && (str[(3 * i) + 2] != ':'))
 167                         goto out;
 168                 ifxmips_mii_mac.mac[i] = simple_strtoul(&str[3 * i], NULL, 16);
 169         }
 170         if(is_valid_ether_addr(ifxmips_mii_mac.mac))
 171                 cmdline_mac = 1;
 172 out:
 173         return 1;
 174 }
 175 __setup("mii0_mac", ifxmips_set_mii0_mac);
 176
 177 int __init
 178 ifxmips_init_devices(void)
 179 {
 180         int dev = 0;
 181
 182         if(!cmdline_mac)
 183                 random_ether_addr(ifxmips_mii_mac.mac);
 184
 185         ifxmips_devs[dev++] = ifxmips_led;
 186         ifxmips_devs[dev++] = ifxmips_gpio;
 187         ifxmips_devs[dev++] = ifxmips_mii;
 188         ifxmips_devs[dev++] = ifxmips_mtd;
 189         ifxmips_devs[dev++] = ifxmips_wdt;
 190 #ifdef CONFIG_GPIO_DEVICE
 191         ifxmips_devs[dev++] = ifxmips_gpio_dev;
 192 #endif
 193         return platform_add_devices(ifxmips_devs, dev);
 194 }
 195
 196 arch_initcall(ifxmips_init_devices);