target/linux/rdc/files-2.6.24/arch/x86/mach-rdc/platform.c

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