target/linux/rdc/files/arch/i386/mach-rdc/platform.c

   1 /*
   2  *  $Id: platform.c 8331 2007-08-03 15:59:23Z florian $
   3  *
   4  *  Generic RDC321x platform devices
   5  *
   6  *  Copyright (C) 2007-2008 OpenWrt.org
   7  *  Copyright (C) 2007 Florian Fainelli <florian@openwrt.org>
   8  *  Copyright (C) 2008 Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
   9  *
  10  *  This program is free software; you can redistribute it and/or
  11  *  modify it under the terms of the GNU General Public License
  12  *  as published by the Free Software Foundation; either version 2
  13  *  of the License, or (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the
  22  *  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  23  *  Boston, MA  02110-1301, USA.
  24  *
  25  */
  26
  27 #include <linux/init.h>
  28 #include <linux/kernel.h>
  29 #include <linux/list.h>
  30 #include <linux/device.h>
  31 #include <linux/platform_device.h>
  32 #include <linux/version.h>
  33 #include <linux/leds.h>
  34 #include <linux/gpio_keys.h>
  35 #include <linux/input.h>
  36 #include <linux/mtd/map.h>
  37 #include <linux/mtd/mtd.h>
  38 #include <linux/mtd/physmap.h>
  39 #include <linux/root_dev.h>
  40 #include <asm/gpio.h>
  41
  42 /* Flash */
  43 #ifdef CONFIG_MTD_RDC3210
  44 static struct resource rdc_flash_resource[] = {
  45         [0] = {
  46                 .start = (u32)-CONFIG_MTD_RDC3210_SIZE,
  47                 .end = (u32)-1,
  48                 .flags = IORESOURCE_MEM,
  49         },
  50 };
  51
  52 static struct platform_device rdc_flash_device = {
  53         .name = "rdc321x-flash",
  54         .id = -1,
  55         .num_resources = ARRAY_SIZE(rdc_flash_resource),
  56         .resource = rdc_flash_resource,
  57 };
  58 #else
  59 static struct mtd_partition rdc_flash_parts[15];
  60
  61 static struct resource rdc_flash_resource = {
  62         .end = (u32)-1,
  63         .flags = IORESOURCE_MEM,
  64 };
  65
  66 static struct physmap_flash_data rdc_flash_data = {
  67         .parts = rdc_flash_parts,
  68 };
  69
  70 static struct platform_device rdc_flash_device = {
  71         .name = "physmap-flash",
  72         .id = -1,
  73         .resource = &rdc_flash_resource,
  74         .num_resources = 1,
  75         .dev.platform_data = &rdc_flash_data,
  76 };
  77 #endif
  78
  79 /* LEDS */
  80 static struct gpio_led default_leds[] = {
  81         { .name = "rdc321x:dmz", .gpio = 1, },
  82 };
  83
  84 static struct gpio_led_platform_data rdc321x_led_data = {
  85         .num_leds = ARRAY_SIZE(default_leds),
  86         .leds = default_leds,
  87 };
  88
  89 static struct platform_device rdc321x_leds = {
  90         .name = "leds-gpio",
  91         .id = -1,
  92         .dev = {
  93                 .platform_data = &rdc321x_led_data,
  94         }
  95 };
  96
  97 /* Watchdog */
  98 static struct platform_device rdc321x_wdt = {
  99         .name = "rdc321x-wdt",
 100         .id = -1,
 101         .num_resources = 0,
 102 };
 103
 104 /* Button */
 105 static struct gpio_keys_button rdc321x_gpio_btn[] = {
 106         {
 107                 .gpio = 0,
 108                 .code = BTN_0,
 109                 .desc = "Reset",
 110                 .active_low = 1,
 111         }
 112 };
 113
 114 static struct gpio_keys_platform_data rdc321x_gpio_btn_data = {
 115         .buttons = rdc321x_gpio_btn,
 116         .nbuttons = ARRAY_SIZE(rdc321x_gpio_btn),
 117 };
 118
 119 static struct platform_device rdc321x_button = {
 120         .name = "gpio-keys",
 121         .id = -1,
 122         .dev = {
 123                 .platform_data = &rdc321x_gpio_btn_data,
 124         }
 125 };
 126
 127 static struct platform_device *rdc321x_devs[] = {
 128         &rdc_flash_device,
 129         &rdc321x_leds,
 130         &rdc321x_wdt,
 131         &rdc321x_button
 132 };
 133
 134 static int probe_flash_start(struct map_info *the_map)
 135 {
 136         struct mtd_info *res;
 137
 138         the_map->virt = ioremap(the_map->phys, the_map->size);
 139         if (the_map->virt == NULL)
 140                 return 1;
 141         for (the_map->bankwidth = 32; the_map->bankwidth; the_map->bankwidth
 142                         >>= 1) {
 143                 res = do_map_probe("cfi_probe", the_map);
 144                 if (res == NULL)
 145                         res = do_map_probe("jedec_probe", the_map);
 146                 if (res != NULL)
 147                         break;
 148         }
 149         iounmap(the_map->virt);
 150         if (res != NULL)
 151                 the_map->phys = (u32)-(s32)(the_map->size = res->size);
 152         return res == NULL;
 153 }
 154
 155 static __init int rdc_board_setup(void)
 156 {
 157 #ifndef CONFIG_MTD_RDC3210
 158         struct map_info rdc_map_info;
 159         u32 the_header[4];
 160
 161         ROOT_DEV = 0;
 162         rdc_map_info.name = rdc_flash_device.name;
 163         rdc_map_info.phys = 0xff000000;
 164         rdc_map_info.size = 0x1000000;
 165         rdc_map_info.bankwidth = 2;
 166         rdc_map_info.set_vpp = NULL;
 167         simple_map_init(&rdc_map_info);
 168         while (probe_flash_start(&rdc_map_info)) {
 169                 rdc_map_info.phys++;
 170                 if (--rdc_map_info.size)
 171                         panic("Not to be or to be: That"
 172                                 " is not the question.");
 173         }
 174         rdc_flash_resource.start = rdc_map_info.phys;
 175         rdc_flash_data.width = rdc_map_info.bankwidth;
 176         rdc_map_info.virt = (u32)ioremap_nocache(rdc_map_info.phys, 0x10);
 177         if (rdc_map_info.virt == NULL)
 178                 panic("Something's rotten in Denmark!");
 179         the_header[0] = ((u32 *)rdc_map_info.virt)[0];
 180         the_header[1] = ((u32 *)rdc_map_info.virt)[1];
 181         the_header[2] = ((u32 *)rdc_map_info.virt)[2];
 182         the_header[3] = ((u32 *)rdc_map_info.virt)[3];
 183         iounmap(rdc_map_info.virt);
 184         if (!memcmp(the_header, "GMTK", 4)) {   /* Gemtek */
 185                 /* TODO */
 186         } else if (!memcmp(the_header, "CSYS", 4)) {    /* Sitecom */
 187                 /* TODO */
 188         } else if (!memcmp(((u8 *)the_header) + 14, "Li", 2)) { /* AMIT */
 189                 rdc_flash_parts[0].name = "kernel_parthdr";
 190                 rdc_flash_parts[0].offset = 0;
 191                 rdc_flash_parts[0].size = 0x10;
 192                 rdc_flash_parts[1].name = "kernel";
 193                 rdc_flash_parts[1].offset = 0x10;
 194                 rdc_flash_parts[1].size = 0xffff0;
 195                 rdc_flash_parts[2].name = "rootfs_parthdr";
 196                 rdc_flash_parts[2].offset = 0x100000;
 197                 rdc_flash_parts[2].size = 0x10;
 198                 rdc_flash_parts[3].name = "rootfs";
 199                 rdc_flash_parts[3].offset = 0x100010;
 200                 rdc_flash_parts[3].size = rdc_map_info.size - 0x160010;
 201                 rdc_flash_parts[4].name = "config_parthdr";
 202                 rdc_flash_parts[4].offset = rdc_map_info.size - 0x60000;
 203                 rdc_flash_parts[4].size = 0x10;
 204                 rdc_flash_parts[5].name = "config";
 205                 rdc_flash_parts[5].offset = rdc_map_info.size - 0x5fff0;
 206                 rdc_flash_parts[5].size = 0xfff0;
 207                 rdc_flash_parts[6].name = "recoveryfs_parthdr";
 208                 rdc_flash_parts[6].offset = rdc_map_info.size - 0x50000;
 209                 rdc_flash_parts[6].size = 0x10;
 210                 rdc_flash_parts[7].name = "recoveryfs";
 211                 rdc_flash_parts[7].offset = rdc_map_info.size - 0x4fff0;
 212                 rdc_flash_parts[7].size = 0x3fff0;
 213                 rdc_flash_parts[8].name = "recovery_parthdr";
 214                 rdc_flash_parts[8].offset = rdc_map_info.size - 0x10000;
 215                 rdc_flash_parts[8].size = 0x10;
 216                 rdc_flash_parts[9].name = "recovery";
 217                 rdc_flash_parts[9].offset = rdc_map_info.size - 0xfff0;
 218                 rdc_flash_parts[9].size = 0x7ff0;
 219                 rdc_flash_parts[10].name = "productinfo_parthdr";
 220                 rdc_flash_parts[10].offset = rdc_map_info.size - 0x8000;
 221                 rdc_flash_parts[10].size = 0x10;
 222                 rdc_flash_parts[11].name = "productinfo";
 223                 rdc_flash_parts[11].offset = rdc_map_info.size - 0x7ff0;
 224                 rdc_flash_parts[11].size = 0x1ff0;
 225                 rdc_flash_parts[12].name = "bootloader_parthdr";
 226                 rdc_flash_parts[12].offset = rdc_map_info.size - 0x6000;
 227                 rdc_flash_parts[12].size = 0x10;
 228                 rdc_flash_parts[13].name = "bootloader";
 229                 rdc_flash_parts[13].offset = rdc_map_info.size - 0x5ff0;
 230                 rdc_flash_parts[13].size = 0x5ff0;
 231                 rdc_flash_parts[14].name = "everything";
 232                 rdc_flash_parts[14].offset = 0;
 233                 rdc_flash_parts[14].size = rdc_map_info.size;
 234                 rdc_flash_data.nr_parts = 15;
 235         } else {        /* ZyXEL */
 236                 rdc_flash_parts[0].name = "kernel";
 237                 rdc_flash_parts[0].offset = 0;
 238                 rdc_flash_parts[0].size = 0x100000;
 239                 rdc_flash_parts[1].name = "rootfs";
 240                 rdc_flash_parts[1].offset = 0x100000;
 241                 rdc_flash_parts[1].size = rdc_map_info.size - 0x140000;
 242                 rdc_flash_parts[2].name = "linux";
 243                 rdc_flash_parts[2].offset = 0;
 244                 rdc_flash_parts[2].size = rdc_map_info.size - 0x40000;
 245                 rdc_flash_parts[3].name = "config";
 246                 rdc_flash_parts[3].offset = rdc_map_info.size - 0x40000;
 247                 rdc_flash_parts[3].size = 0x10000;
 248                 rdc_flash_parts[4].name = "productinfo";
 249                 rdc_flash_parts[4].offset = rdc_map_info.size - 0x30000;
 250                 rdc_flash_parts[4].size = 0x10000;
 251                 rdc_flash_parts[5].name = "bootloader";
 252                 rdc_flash_parts[5].offset = rdc_map_info.size - 0x20000;
 253                 rdc_flash_parts[5].size = 0x20000;
 254                 rdc_flash_data.nr_parts = 6;
 255         }
 256 #endif
 257         return platform_add_devices(rdc321x_devs, ARRAY_SIZE(rdc321x_devs));
 258 }
 259
 260 #ifdef CONFIG_MTD_RDC3210
 261 arch_initcall(rdc_board_setup);
 262 #else
 263 late_initcall(rdc_board_setup);
 264 #endif