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_keys.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 #include <asm/rdc321x_gpio.h>
  40
  41 /* Flash */
  42 #ifdef CONFIG_MTD_R8610
  43 #define CONFIG_MTD_RDC3210 1
  44 #elif defined CONFIG_MTD_RDC3210
  45 static struct resource rdc_flash_resource[] = {
  46         [0] = {
  47                 .start = (u32)-CONFIG_MTD_RDC3210_SIZE,
  48                 .end = (u32)-1,
  49                 .flags = IORESOURCE_MEM,
  50         },
  51 };
  52
  53 static struct platform_device rdc_flash_device = {
  54         .name = "rdc321x-flash",
  55         .id = -1,
  56         .num_resources = ARRAY_SIZE(rdc_flash_resource),
  57         .resource = rdc_flash_resource,
  58 };
  59 #else
  60 static struct mtd_partition rdc_flash_parts[15];
  61
  62 static struct resource rdc_flash_resource = {
  63         .end = (u32)-1,
  64         .flags = IORESOURCE_MEM,
  65 };
  66
  67 static struct physmap_flash_data rdc_flash_data = {
  68         .parts = rdc_flash_parts,
  69 };
  70
  71 static struct platform_device rdc_flash_device = {
  72         .name = "physmap-flash",
  73         .id = -1,
  74         .resource = &rdc_flash_resource,
  75         .num_resources = 1,
  76         .dev.platform_data = &rdc_flash_data,
  77 };
  78 #endif
  79
  80 /* LEDS */
  81 static struct gpio_led default_leds[] = {
  82         { .name = "rdc321x:dmz", .gpio = 1, .active_low = 1},
  83 };
  84
  85 static struct gpio_led_platform_data rdc321x_led_data = {
  86         .num_leds = ARRAY_SIZE(default_leds),
  87         .leds = default_leds,
  88 };
  89
  90 static struct platform_device rdc321x_leds = {
  91         .name = "leds-gpio",
  92         .id = -1,
  93         .dev = {
  94                 .platform_data = &rdc321x_led_data,
  95         }
  96 };
  97
  98 /* Button */
  99 static struct gpio_keys_button rdc321x_gpio_btn[] = {
 100         {
 101                 .gpio = 0,
 102                 .code = BTN_0,
 103                 .desc = "Reset",
 104                 .active_low = 1,
 105         }
 106 };
 107
 108 static struct gpio_keys_platform_data rdc321x_gpio_btn_data = {
 109         .buttons = rdc321x_gpio_btn,
 110         .nbuttons = ARRAY_SIZE(rdc321x_gpio_btn),
 111 };
 112
 113 static struct platform_device rdc321x_button = {
 114         .name = "gpio-keys",
 115         .id = -1,
 116         .dev = {
 117                 .platform_data = &rdc321x_gpio_btn_data,
 118         }
 119 };
 120
 121 static struct platform_device *rdc321x_devs[] = {
 122         &rdc_flash_device,
 123         &rdc321x_leds,
 124         &rdc321x_button,
 125 };
 126
 127 static int probe_flash_start(struct map_info *the_map)
 128 {
 129         struct mtd_info *res;
 130
 131         the_map->virt = ioremap(the_map->phys, the_map->size);
 132         if (the_map->virt == NULL)
 133                 return 1;
 134         for (the_map->bankwidth = 32; the_map->bankwidth; the_map->bankwidth
 135                         >>= 1) {
 136                 res = do_map_probe("cfi_probe", the_map);
 137                 if (res == NULL)
 138                         res = do_map_probe("jedec_probe", the_map);
 139                 if (res != NULL)
 140                         break;
 141         }
 142         iounmap(the_map->virt);
 143         if (res != NULL)
 144                 the_map->phys = (u32)-(s32)(the_map->size = res->size);
 145         return res == NULL;
 146 }
 147
 148 static int __init rdc_board_setup(void)
 149 {
 150 #ifndef CONFIG_MTD_RDC3210
 151         struct map_info rdc_map_info;
 152         u32 the_header[8];
 153
 154         ROOT_DEV = 0;
 155         rdc_map_info.name = rdc_flash_device.name;
 156         rdc_map_info.size = 0x800000;   //8MB
 157         rdc_map_info.phys = (u32) -rdc_map_info.size;
 158         rdc_map_info.bankwidth = 2;
 159         rdc_map_info.set_vpp = NULL;
 160         simple_map_init(&rdc_map_info);
 161         while (probe_flash_start(&rdc_map_info)) {
 162                 if (rdc_map_info.size /= 2 < 0x100000)  //1MB
 163                         panic("Could not find start of flash!");
 164                 rdc_map_info.phys = (u32) -rdc_map_info.size;
 165         }
 166         rdc_flash_resource.start = rdc_map_info.phys;
 167         rdc_flash_data.width = rdc_map_info.bankwidth;
 168         rdc_map_info.virt = ioremap_nocache(rdc_map_info.phys, 0x10);
 169         if (rdc_map_info.virt == NULL)
 170                 panic("Could not ioremap to read device magic!");
 171         the_header[0] = ((u32 *)rdc_map_info.virt)[0];
 172         the_header[1] = ((u32 *)rdc_map_info.virt)[1];
 173         the_header[2] = ((u32 *)rdc_map_info.virt)[2];
 174         the_header[3] = ((u32 *)rdc_map_info.virt)[3];
 175         iounmap(rdc_map_info.virt);
 176         rdc_map_info.virt = ioremap_nocache(rdc_map_info.phys + 0x8000, 0x10);
 177         if (rdc_map_info.virt == NULL)
 178                 panic("Could not ioremap to read device magic!");
 179         the_header[4] = ((u32 *)rdc_map_info.virt)[0];
 180         the_header[5] = ((u32 *)rdc_map_info.virt)[1];
 181         the_header[6] = ((u32 *)rdc_map_info.virt)[2];
 182         the_header[7] = ((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 + 4, "CSYS", 4)) {        /* Sitecom */
 187                 rdc_flash_parts[0].name = "system";
 188                 rdc_flash_parts[0].offset = 0;
 189                 rdc_flash_parts[0].size = rdc_map_info.size - 0x10000;
 190                 rdc_flash_parts[1].name = "config";
 191                 rdc_flash_parts[1].offset = 0;
 192                 rdc_flash_parts[1].size = 0x8000;
 193                 rdc_flash_parts[2].name = "magic";
 194                 rdc_flash_parts[2].offset = 0x8000;
 195                 rdc_flash_parts[2].size = 0x14;
 196                 rdc_flash_parts[3].name = "kernel";
 197                 rdc_flash_parts[3].offset = 0x8014;
 198                 rdc_flash_parts[3].size = the_header[5];
 199                 rdc_flash_parts[4].name = "rootfs";
 200                 rdc_flash_parts[4].offset = 0x8014 + the_header[5];
 201                 rdc_flash_parts[4].size = rdc_flash_parts[0].size - rdc_flash_parts[4].offset;
 202                 rdc_flash_parts[5].name = "bootloader";
 203                 rdc_flash_parts[5].offset = rdc_flash_parts[0].size;
 204                 rdc_flash_parts[5].size = 0x10000;
 205                 rdc_flash_data.nr_parts = 6;
 206         } else if (!memcmp(((u8 *)the_header) + 14, "Li", 2)) { /* AMIT */
 207                 rdc_flash_parts[0].name = "kernel_parthdr";
 208                 rdc_flash_parts[0].offset = 0;
 209                 rdc_flash_parts[0].size = 0x10;
 210                 rdc_flash_parts[1].name = "kernel";
 211                 rdc_flash_parts[1].offset = 0x10;
 212                 rdc_flash_parts[1].size = 0xffff0;
 213                 rdc_flash_parts[2].name = "rootfs_parthdr";
 214                 rdc_flash_parts[2].offset = 0x100000;
 215                 rdc_flash_parts[2].size = 0x10;
 216                 rdc_flash_parts[3].name = "rootfs";
 217                 rdc_flash_parts[3].offset = 0x100010;
 218                 rdc_flash_parts[3].size = rdc_map_info.size - 0x160010;
 219                 rdc_flash_parts[4].name = "config_parthdr";
 220                 rdc_flash_parts[4].offset = rdc_map_info.size - 0x60000;
 221                 rdc_flash_parts[4].size = 0x10;
 222                 rdc_flash_parts[5].name = "config";
 223                 rdc_flash_parts[5].offset = rdc_map_info.size - 0x5fff0;
 224                 rdc_flash_parts[5].size = 0xfff0;
 225                 rdc_flash_parts[6].name = "recoveryfs_parthdr";
 226                 rdc_flash_parts[6].offset = rdc_map_info.size - 0x50000;
 227                 rdc_flash_parts[6].size = 0x10;
 228                 rdc_flash_parts[7].name = "recoveryfs";
 229                 rdc_flash_parts[7].offset = rdc_map_info.size - 0x4fff0;
 230                 rdc_flash_parts[7].size = 0x3fff0;
 231                 rdc_flash_parts[8].name = "recovery_parthdr";
 232                 rdc_flash_parts[8].offset = rdc_map_info.size - 0x10000;
 233                 rdc_flash_parts[8].size = 0x10;
 234                 rdc_flash_parts[9].name = "recovery";
 235                 rdc_flash_parts[9].offset = rdc_map_info.size - 0xfff0;
 236                 rdc_flash_parts[9].size = 0x7ff0;
 237                 rdc_flash_parts[10].name = "productinfo_parthdr";
 238                 rdc_flash_parts[10].offset = rdc_map_info.size - 0x8000;
 239                 rdc_flash_parts[10].size = 0x10;
 240                 rdc_flash_parts[11].name = "productinfo";
 241                 rdc_flash_parts[11].offset = rdc_map_info.size - 0x7ff0;
 242                 rdc_flash_parts[11].size = 0x1ff0;
 243                 rdc_flash_parts[12].name = "bootloader_parthdr";
 244                 rdc_flash_parts[12].offset = rdc_map_info.size - 0x6000;
 245                 rdc_flash_parts[12].size = 0x10;
 246                 rdc_flash_parts[13].name = "bootloader";
 247                 rdc_flash_parts[13].offset = rdc_map_info.size - 0x5ff0;
 248                 rdc_flash_parts[13].size = 0x5ff0;
 249                 rdc_flash_parts[14].name = "everything";
 250                 rdc_flash_parts[14].offset = 0;
 251                 rdc_flash_parts[14].size = rdc_map_info.size;
 252                 rdc_flash_data.nr_parts = 15;
 253         } else {        /* ZyXEL */
 254                 rdc_flash_parts[0].name = "kernel";
 255                 rdc_flash_parts[0].offset = 0;
 256                 rdc_flash_parts[0].size = 0x100000;
 257                 rdc_flash_parts[1].name = "rootfs";
 258                 rdc_flash_parts[1].offset = 0x100000;
 259                 rdc_flash_parts[1].size = rdc_map_info.size - 0x140000;
 260                 rdc_flash_parts[2].name = "linux";
 261                 rdc_flash_parts[2].offset = 0;
 262                 rdc_flash_parts[2].size = rdc_map_info.size - 0x40000;
 263                 rdc_flash_parts[3].name = "config";
 264                 rdc_flash_parts[3].offset = rdc_map_info.size - 0x40000;
 265                 rdc_flash_parts[3].size = 0x10000;
 266                 rdc_flash_parts[4].name = "productinfo";
 267                 rdc_flash_parts[4].offset = rdc_map_info.size - 0x30000;
 268                 rdc_flash_parts[4].size = 0x10000;
 269                 rdc_flash_parts[5].name = "bootloader";
 270                 rdc_flash_parts[5].offset = rdc_map_info.size - 0x20000;
 271                 rdc_flash_parts[5].size = 0x20000;
 272                 rdc_flash_data.nr_parts = 6;
 273         }
 274 #endif
 275         return platform_add_devices(rdc321x_devs, ARRAY_SIZE(rdc321x_devs));
 276 }
 277
 278 #ifdef CONFIG_MTD_RDC3210
 279 arch_initcall(rdc_board_setup);
 280 #else
 281 late_initcall(rdc_board_setup);
 282 #endif