arch/sh/boards/board-rsk7201.c

   1 /*
   2  * Renesas Technology Europe RSK+ 7201 Support.
   3  *
   4  * Copyright (C) 2008 Peter Griffin <pgriffin@mpc-data.co.uk>
   5  *
   6  * This file is subject to the terms and conditions of the GNU General Public
   7  * License.  See the file "COPYING" in the main directory of this archive
   8  * for more details.
   9  */
  10 #include <linux/init.h>
  11 #include <linux/types.h>
  12 #include <linux/platform_device.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/mtd/mtd.h>
  15 #include <linux/mtd/partitions.h>
  16 #include <linux/mtd/physmap.h>
  17 #include <linux/mtd/map.h>
  18 #include <asm/machvec.h>
  19 #include <asm/io.h>
  20
  21 static const char *probes[] = { "cmdlinepart", NULL };
  22
  23 static struct mtd_partition *parsed_partitions;
  24
  25 static struct mtd_partition rsk7201_partitions[] = {
  26         {
  27                 .name           = "Bootloader",
  28                 .offset         = 0x00000000,
  29                 .size           = 0x00040000,
  30                 .mask_flags     = MTD_WRITEABLE,
  31         }, {
  32                 .name           = "Kernel",
  33                 .offset         = MTDPART_OFS_NXTBLK,
  34                 .size           = 0x001c0000,
  35         }, {
  36                 .name           = "Flash_FS",
  37                 .offset         = MTDPART_OFS_NXTBLK,
  38                 .size           = MTDPART_SIZ_FULL,
  39         }
  40 };
  41
  42 static struct physmap_flash_data flash_data = {
  43         .width          = 2,
  44 };
  45
  46 static struct resource flash_resource = {
  47         .start          = 0x20000000,
  48         .end            = 0x20400000,
  49         .flags          = IORESOURCE_MEM,
  50 };
  51
  52 static struct platform_device flash_device = {
  53         .name           = "physmap-flash",
  54         .id             = -1,
  55         .resource       = &flash_resource,
  56         .num_resources  = 1,
  57         .dev            = {
  58                 .platform_data = &flash_data,
  59         },
  60 };
  61
  62 static struct mtd_info *flash_mtd;
  63
  64 static struct map_info rsk7201_flash_map = {
  65         .name           = "RSK+ Flash",
  66         .size           = 0x400000,
  67         .bankwidth      = 2,
  68 };
  69
  70 static void __init set_mtd_partitions(void)
  71 {
  72         int nr_parts = 0;
  73
  74         simple_map_init(&rsk7201_flash_map);
  75         flash_mtd = do_map_probe("cfi_probe", &rsk7201_flash_map);
  76         nr_parts = parse_mtd_partitions(flash_mtd, probes,
  77                                         &parsed_partitions, 0);
  78         /* If there is no partition table, used the hard coded table */
  79         if (nr_parts <= 0) {
  80                 flash_data.parts = rsk7201_partitions;
  81                 flash_data.nr_parts = ARRAY_SIZE(rsk7201_partitions);
  82         } else {
  83                 flash_data.nr_parts = nr_parts;
  84                 flash_data.parts = parsed_partitions;
  85         }
  86 }
  87
  88 static struct platform_device *rsk7201_devices[] __initdata = {
  89         &flash_device,
  90 };
  91
  92 static int __init rsk7201_devices_setup(void)
  93 {
  94         set_mtd_partitions();
  95         return platform_add_devices(rsk7201_devices,
  96                                     ARRAY_SIZE(rsk7201_devices));
  97 }
  98 device_initcall(rsk7201_devices_setup);
  99
 100 /*
 101  * The Machine Vector
 102  */
 103 static struct sh_machine_vector mv_rsk7201 __initmv = {
 104         .mv_name        = "RSK+7201",
 105 };