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

   1 /*
   2  *   arch/mips/ifxmips/board.c
   3  *
   4  *   This program is free software; you can redistribute it and/or modify
   5  *   it under the terms of the GNU General Public License as published by
   6  *   the Free Software Foundation; either version 2 of the License, or
   7  *   (at your option) any later version.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details.
  13  *
  14  *   You should have received a copy of the GNU General Public License
  15  *   along with this program; if not, write to the Free Software
  16  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  17  *
  18  *   Copyright (C) 2007 John Crispin <blogic@openwrt.org>
  19  *
  20  */
  21
  22 #include <linux/autoconf.h>
  23 #include <linux/init.h>
  24 #include <linux/module.h>
  25 #include <linux/types.h>
  26 #include <linux/string.h>
  27 #include <linux/mtd/physmap.h>
  28 #include <linux/kernel.h>
  29 #include <linux/reboot.h>
  30 #include <linux/platform_device.h>
  31 #include <asm/bootinfo.h>
  32 #include <asm/reboot.h>
  33 #include <asm/time.h>
  34 #include <asm/irq.h>
  35 #include <asm/io.h>
  36 #include <asm/ifxmips/ifxmips.h>
  37
  38 #define MAX_IFXMIPS_DEVS                5
  39
  40 #define BOARD_DANUBE                    "Danube"
  41 #define BOARD_DANUBE_CHIPID             0x10129083
  42
  43 #define BOARD_TWINPASS                  "Twinpass"
  44 #define BOARD_TWINPASS_CHIPID   0x3012D083
  45
  46 #define BOARD_DANUBE                    "Danube"
  47
  48 static unsigned int chiprev;
  49
  50 static struct platform_device *ifxmips_devs[MAX_IFXMIPS_DEVS];
  51
  52 static struct platform_device ifxmips_led[] =
  53 {
  54         {
  55                 .id = 0,
  56                 .name = "ifxmips_led",
  57         },
  58 };
  59
  60 static struct platform_device ifxmips_gpio[] =
  61 {
  62         {
  63                 .id = 0,
  64                 .name = "ifxmips_gpio",
  65         },
  66 };
  67
  68 static struct platform_device ifxmips_mii[] =
  69 {
  70         {
  71                 .id = 0,
  72                 .name = "ifxmips_mii0",
  73         },
  74 };
  75
  76 static struct physmap_flash_data ifxmips_mtd_data = {
  77         .width    = 2,
  78 };
  79
  80 static struct resource ifxmips_mtd_resource = {
  81         .start  = IFXMIPS_FLASH_START,
  82         .end    = IFXMIPS_FLASH_START + IFXMIPS_FLASH_MAX - 1,
  83         .flags  = IORESOURCE_MEM,
  84 };
  85
  86 static struct platform_device ifxmips_mtd[] =
  87 {
  88         {
  89                 .id = 0,
  90                 .name = "ifxmips_mtd",
  91                 .dev = {
  92                         .platform_data = &ifxmips_mtd_data,
  93                 },
  94                 .num_resources  = 1,
  95                 .resource   = &ifxmips_mtd_resource,
  96         },
  97 };
  98
  99 const char*
 100 get_system_type (void)
 101 {
 102         chiprev = ifxmips_r32(IFXMIPS_MPS_CHIPID);
 103         switch(chiprev)
 104         {
 105         case BOARD_DANUBE_CHIPID:
 106                 return BOARD_DANUBE;
 107
 108         case BOARD_TWINPASS_CHIPID:
 109                 return BOARD_TWINPASS;
 110         }
 111
 112         return BOARD_SYSTEM_TYPE;
 113 }
 114
 115 int __init ifxmips_init_devices(void)
 116 {
 117         /*
 118         *       This is where we detect what chip we are running on
 119         *       Currently we support 3 chips
 120         *       1.) Danube
 121         *       2.) Twinpass (Danube without dsl phy)
 122         *       3.) KDbg74 (used for debuging)
 123         */
 124
 125         int dev = 0;
 126
 127         /* the following devices are generic for all targets */
 128
 129         ifxmips_devs[dev++] = ifxmips_led;
 130         ifxmips_devs[dev++] = ifxmips_gpio;
 131         ifxmips_devs[dev++] = ifxmips_mii;
 132         ifxmips_devs[dev++] = ifxmips_mtd;
 133
 134         return platform_add_devices(ifxmips_devs, dev);
 135 }
 136
 137 arch_initcall(ifxmips_init_devices);