target/linux/rdc/files-2.6.30/arch/x86/mach-rdc321x/platform.c

   1 /*
   2  *  Generic RDC321x platform devices
   3  *
   4  *  Copyright (C) 2007-2009 OpenWrt.org
   5  *  Copyright (C) 2007 Florian Fainelli <florian@openwrt.org>
   6  *  Copyright (C) 2008-2009 Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
   7  *
   8  *  This program is free software; you can redistribute it and/or
   9  *  modify it under the terms of the GNU General Public License
  10  *  as published by the Free Software Foundation; either version 2
  11  *  of the License, or (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the
  20  *  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  21  *  Boston, MA  02110-1301, USA.
  22  *
  23  */
  24
  25 #include <linux/init.h>
  26 #include <linux/kernel.h>
  27 #include <linux/list.h>
  28 #include <linux/device.h>
  29 #include <linux/platform_device.h>
  30 #include <linux/version.h>
  31 #include <linux/leds.h>
  32 #include <linux/gpio_buttons.h>
  33 #include <linux/input.h>
  34 #include <linux/mtd/map.h>
  35 #include <linux/mtd/mtd.h>
  36 #include <linux/mtd/physmap.h>
  37 #include <linux/root_dev.h>
  38
  39 /* Flash */
  40 #ifdef CONFIG_MTD_R8610
  41 #define CONFIG_MTD_RDC3210 1
  42 #elif defined 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, .active_low = 1},
  81 };
  82
  83 static struct gpio_led sitecom_leds[] = {
  84         { .name = "rdc321x:power", .gpio = 15, .active_low = 1},
  85         { .name = "rdc321x:usb0", .gpio = 0, .active_low = 1},
  86         { .name = "rdc321x:usb1", .gpio = 1, .active_low = 1},
  87 };
  88
  89 static struct gpio_led_platform_data rdc321x_led_data = {
  90         .num_leds = ARRAY_SIZE(default_leds),
  91         .leds = default_leds,
  92 };
  93
  94 static struct platform_device rdc321x_leds = {
  95         .name = "leds-gpio",
  96         .id = -1,
  97         .dev = {
  98                 .platform_data = &rdc321x_led_data,
  99         }
 100 };
 101
 102 /* Button */
 103 static struct gpio_button rdc321x_gpio_btn[] = {
 104         {
 105                 .gpio = 6,
 106                 .code = BTN_0,
 107                 .desc = "Reset",
 108                 .active_low = 1,
 109         }
 110 };
 111
 112 static struct gpio_buttons_platform_data rdc321x_gpio_btn_data = {
 113         .buttons = rdc321x_gpio_btn,
 114         .nbuttons = ARRAY_SIZE(rdc321x_gpio_btn),
 115 };
 116
 117 static struct platform_device rdc321x_button = {
 118         .name = "gpio-buttons",
 119         .id = -1,
 120         .dev = {
 121                 .platform_data = &rdc321x_gpio_btn_data,
 122         }
 123 };
 124
 125 static struct platform_device *rdc321x_devs[] = {
 126         &rdc_flash_device,
 127         &rdc321x_leds,
 128         &rdc321x_button,
 129 };
 130
 131 static int probe_flash_start(struct map_info *the_map)
 132 {
 133         struct mtd_info *res;
 134
 135         the_map->virt = ioremap(the_map->phys, the_map->size);
 136         if (the_map->virt == NULL)
 137                 return 1;
 138         for (the_map->bankwidth = 32; the_map->bankwidth; the_map->bankwidth
 139                         >>= 1) {
 140                 res = do_map_probe("cfi_probe", the_map);
 141                 if (res == NULL)
 142                         res = do_map_probe("jedec_probe", the_map);
 143                 if (res != NULL)
 144                         break;
 145         }
 146         iounmap(the_map->virt);
 147         if (res != NULL)
 148                 the_map->phys = (u32)-(s32)(the_map->size = res->size);
 149         return res == NULL;
 150 }
 151
 152 static int __init rdc_board_setup(void)
 153 {
 154 #ifndef CONFIG_MTD_RDC3210
 155         struct map_info rdc_map_info;
 156         u32 the_header[8];
 157
 158         ROOT_DEV = 0;
 159         rdc_map_info.name = rdc_flash_device.name;
 160         rdc_map_info.size = 0x800000;   //8MB
 161         rdc_map_info.phys = (u32) -rdc_map_info.size;
 162         rdc_map_info.bankwidth = 2;
 163         rdc_map_info.set_vpp = NULL;
 164         simple_map_init(&rdc_map_info);
 165         while (probe_flash_start(&rdc_map_info)) {
 166                 if (rdc_map_info.size /= 2 < 0x100000)  //1MB
 167                         panic("Could not find start of flash!");
 168                 rdc_map_info.phys = (u32) -rdc_map_info.size;
 169         }
 170         rdc_flash_resource.start = rdc_map_info.phys;
 171         rdc_flash_data.width = rdc_map_info.bankwidth;
 172         rdc_map_info.virt = ioremap_nocache(rdc_map_info.phys, 0x10);
 173         if (rdc_map_info.virt == NULL)
 174                 panic("Could not ioremap to read device magic!");
 175         the_header[0] = ((u32 *)rdc_map_info.virt)[0];
 176         the_header[1] = ((u32 *)rdc_map_info.virt)[1];
 177         the_header[2] = ((u32 *)rdc_map_info.virt)[2];
 178         the_header[3] = ((u32 *)rdc_map_info.virt)[3];
 179         iounmap(rdc_map_info.virt);
 180         rdc_map_info.virt = ioremap_nocache(rdc_map_info.phys + 0x8000, 0x10);
 181         if (rdc_map_info.virt == NULL)
 182                 panic("Could not ioremap to read device magic!");
 183         the_header[4] = ((u32 *)rdc_map_info.virt)[0];
 184         the_header[5] = ((u32 *)rdc_map_info.virt)[1];
 185         the_header[6] = ((u32 *)rdc_map_info.virt)[2];
 186         the_header[7] = ((u32 *)rdc_map_info.virt)[3];
 187         iounmap(rdc_map_info.virt);
 188         if (!memcmp(the_header, "GMTK", 4)) {   /* Gemtek */
 189                 /* TODO */
 190         } else if (!memcmp(the_header + 4, "CSYS", 4)) {        /* Sitecom */
 191                 rdc_flash_parts[0].name = "system";
 192                 rdc_flash_parts[0].offset = 0;
 193                 rdc_flash_parts[0].size = rdc_map_info.size - 0x10000;
 194                 rdc_flash_parts[1].name = "config";
 195                 rdc_flash_parts[1].offset = 0;
 196                 rdc_flash_parts[1].size = 0x8000;
 197                 rdc_flash_parts[2].name = "magic";
 198                 rdc_flash_parts[2].offset = 0x8000;
 199                 rdc_flash_parts[2].size = 0x14;
 200                 rdc_flash_parts[3].name = "kernel";
 201                 rdc_flash_parts[3].offset = 0x8014;
 202                 rdc_flash_parts[3].size = the_header[5];
 203                 rdc_flash_parts[4].name = "rootfs";
 204                 rdc_flash_parts[4].offset = 0x8014 + the_header[5];
 205                 rdc_flash_parts[4].size = rdc_flash_parts[0].size - rdc_flash_parts[4].offset;
 206                 rdc_flash_parts[5].name = "bootloader";
 207                 rdc_flash_parts[5].offset = rdc_flash_parts[0].size;
 208                 rdc_flash_parts[5].size = 0x10000;
 209                 rdc_flash_data.nr_parts = 6;
 210
 211                 rdc321x_led_data.num_leds = ARRAY_SIZE(sitecom_leds);
 212                 rdc321x_led_data.leds = sitecom_leds;
 213         } else if (!memcmp(((u8 *)the_header) + 14, "Li", 2)) { /* AMIT */
 214                 rdc_flash_parts[0].name = "kernel_parthdr";
 215                 rdc_flash_parts[0].offset = 0;
 216                 rdc_flash_parts[0].size = 0x10;
 217                 rdc_flash_parts[1].name = "kernel";
 218                 rdc_flash_parts[1].offset = 0x10;
 219                 rdc_flash_parts[1].size = 0xffff0;
 220                 rdc_flash_parts[2].name = "rootfs_parthdr";
 221                 rdc_flash_parts[2].offset = 0x100000;
 222                 rdc_flash_parts[2].size = 0x10;
 223                 rdc_flash_parts[3].name = "rootfs";
 224                 rdc_flash_parts[3].offset = 0x100010;
 225                 rdc_flash_parts[3].size = rdc_map_info.size - 0x160010;
 226                 rdc_flash_parts[4].name = "config_parthdr";
 227                 rdc_flash_parts[4].offset = rdc_map_info.size - 0x60000;
 228                 rdc_flash_parts[4].size = 0x10;
 229                 rdc_flash_parts[5].name = "config";
 230                 rdc_flash_parts[5].offset = rdc_map_info.size - 0x5fff0;
 231                 rdc_flash_parts[5].size = 0xfff0;
 232                 rdc_flash_parts[6].name = "recoveryfs_parthdr";
 233                 rdc_flash_parts[6].offset = rdc_map_info.size - 0x50000;
 234                 rdc_flash_parts[6].size = 0x10;
 235                 rdc_flash_parts[7].name = "recoveryfs";
 236                 rdc_flash_parts[7].offset = rdc_map_info.size - 0x4fff0;
 237                 rdc_flash_parts[7].size = 0x3fff0;
 238                 rdc_flash_parts[8].name = "recovery_parthdr";
 239                 rdc_flash_parts[8].offset = rdc_map_info.size - 0x10000;
 240                 rdc_flash_parts[8].size = 0x10;
 241                 rdc_flash_parts[9].name = "recovery";
 242                 rdc_flash_parts[9].offset = rdc_map_info.size - 0xfff0;
 243                 rdc_flash_parts[9].size = 0x7ff0;
 244                 rdc_flash_parts[10].name = "productinfo_parthdr";
 245                 rdc_flash_parts[10].offset = rdc_map_info.size - 0x8000;
 246                 rdc_flash_parts[10].size = 0x10;
 247                 rdc_flash_parts[11].name = "productinfo";
 248                 rdc_flash_parts[11].offset = rdc_map_info.size - 0x7ff0;
 249                 rdc_flash_parts[11].size = 0x1ff0;
 250                 rdc_flash_parts[12].name = "bootloader_parthdr";
 251                 rdc_flash_parts[12].offset = rdc_map_info.size - 0x6000;
 252                 rdc_flash_parts[12].size = 0x10;
 253                 rdc_flash_parts[13].name = "bootloader";
 254                 rdc_flash_parts[13].offset = rdc_map_info.size - 0x5ff0;
 255                 rdc_flash_parts[13].size = 0x5ff0;
 256                 rdc_flash_parts[14].name = "everything";
 257                 rdc_flash_parts[14].offset = 0;
 258                 rdc_flash_parts[14].size = rdc_map_info.size;
 259                 rdc_flash_data.nr_parts = 15;
 260         } else {        /* ZyXEL */
 261                 rdc_flash_parts[0].name = "kernel";
 262                 rdc_flash_parts[0].offset = 0;
 263                 rdc_flash_parts[0].size = 0x100000;
 264                 rdc_flash_parts[1].name = "rootfs";
 265                 rdc_flash_parts[1].offset = 0x100000;
 266                 rdc_flash_parts[1].size = rdc_map_info.size - 0x140000;
 267                 rdc_flash_parts[2].name = "linux";
 268                 rdc_flash_parts[2].offset = 0;
 269                 rdc_flash_parts[2].size = rdc_map_info.size - 0x40000;
 270                 rdc_flash_parts[3].name = "config";
 271                 rdc_flash_parts[3].offset = rdc_map_info.size - 0x40000;
 272                 rdc_flash_parts[3].size = 0x10000;
 273                 rdc_flash_parts[4].name = "productinfo";
 274                 rdc_flash_parts[4].offset = rdc_map_info.size - 0x30000;
 275                 rdc_flash_parts[4].size = 0x10000;
 276                 rdc_flash_parts[5].name = "bootloader";
 277                 rdc_flash_parts[5].offset = rdc_map_info.size - 0x20000;
 278                 rdc_flash_parts[5].size = 0x20000;
 279                 rdc_flash_data.nr_parts = 6;
 280         }
 281 #endif
 282         return platform_add_devices(rdc321x_devs, ARRAY_SIZE(rdc321x_devs));
 283 }
 284
 285 #ifdef CONFIG_MTD_RDC3210
 286 arch_initcall(rdc_board_setup);
 287 #else
 288 late_initcall(rdc_board_setup);
 289 #endif