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 <asm/ifxmips/ifxmips.h>
  34
  35 #define MAX_IFXMIPS_DEVS                9
  36
  37 #define BOARD_DANUBE                    "Danube"
  38 #define BOARD_DANUBE_CHIPID             0x10129083
  39
  40 #define BOARD_TWINPASS                  "Twinpass"
  41 #define BOARD_TWINPASS_CHIPID   0x3012D083
  42
  43 static unsigned int chiprev;
  44 static struct platform_device *ifxmips_devs[MAX_IFXMIPS_DEVS];
  45
  46 spinlock_t ebu_lock = SPIN_LOCK_UNLOCKED;
  47 EXPORT_SYMBOL_GPL(ebu_lock);
  48
  49 static struct platform_device
  50 ifxmips_led[] =
  51 {
  52         {
  53                 .id = 0,
  54                 .name = "ifxmips_led",
  55         },
  56 };
  57
  58 static struct platform_device
  59 ifxmips_gpio[] =
  60 {
  61         {
  62                 .id = 0,
  63                 .name = "ifxmips_gpio",
  64         },
  65 };
  66
  67 static struct platform_device
  68 ifxmips_mii[] =
  69 {
  70         {
  71                 .id = 0,
  72                 .name = "ifxmips_mii0",
  73         },
  74 };
  75
  76 static struct platform_device
  77 ifxmips_wdt[] =
  78 {
  79         {
  80                 .id = 0,
  81                 .name = "ifxmips_wdt",
  82         },
  83 };
  84
  85 static struct physmap_flash_data
  86 ifxmips_mtd_data = {
  87         .width    = 2,
  88 };
  89
  90 static struct resource
  91 ifxmips_mtd_resource = {
  92         .start  = IFXMIPS_FLASH_START,
  93         .end    = IFXMIPS_FLASH_START + IFXMIPS_FLASH_MAX - 1,
  94         .flags  = IORESOURCE_MEM,
  95 };
  96
  97 static struct platform_device
  98 ifxmips_mtd[] =
  99 {
 100         {
 101                 .id = 0,
 102                 .name = "ifxmips_mtd",
 103                 .dev = {
 104                         .platform_data = &ifxmips_mtd_data,
 105                 },
 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 int __init
 152 ifxmips_init_devices(void)
 153 {
 154         int dev = 0;
 155
 156         ifxmips_devs[dev++] = ifxmips_led;
 157         ifxmips_devs[dev++] = ifxmips_gpio;
 158         ifxmips_devs[dev++] = ifxmips_mii;
 159         ifxmips_devs[dev++] = ifxmips_mtd;
 160         ifxmips_devs[dev++] = ifxmips_wdt;
 161 #ifdef CONFIG_GPIO_DEVICE
 162         ifxmips_devs[dev++] = ifxmips_gpio_dev;
 163 #endif
 164         return platform_add_devices(ifxmips_devs, dev);
 165 }
 166
 167 arch_initcall(ifxmips_init_devices);