arch/sh/boards/mach-rsk/setup.c

   1 /*
   2  * Renesas Technology Europe RSK+ Support.
   3  *
   4  * Copyright (C) 2008 Paul Mundt
   5  * Copyright (C) 2008 Peter Griffin <pgriffin@mpc-data.co.uk>
   6  *
   7  * This file is subject to the terms and conditions of the GNU General Public
   8  * License.  See the file "COPYING" in the main directory of this archive
   9  * for more details.
  10  */
  11 #include <linux/init.h>
  12 #include <linux/types.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/interrupt.h>
  15 #include <linux/mtd/mtd.h>
  16 #include <linux/mtd/partitions.h>
  17 #include <linux/mtd/physmap.h>
  18 #include <linux/mtd/map.h>
  19 #include <asm/machvec.h>
  20 #include <asm/io.h>
  21
  22 static const char *probes[] = { "cmdlinepart", NULL };
  23
  24 static struct mtd_partition *parsed_partitions;
  25
  26 static struct mtd_partition rsk_partitions[] = {
  27         {
  28                 .name           = "Bootloader",
  29                 .offset         = 0x00000000,
  30                 .size           = 0x00040000,
  31                 .mask_flags     = MTD_WRITEABLE,
  32         }, {
  33                 .name           = "Kernel",
  34                 .offset         = MTDPART_OFS_NXTBLK,
  35                 .size           = 0x001c0000,
  36         }, {
  37                 .name           = "Flash_FS",
  38                 .offset         = MTDPART_OFS_NXTBLK,
  39                 .size           = MTDPART_SIZ_FULL,
  40         }
  41 };
  42
  43 static struct physmap_flash_data flash_data = {
  44         .width          = 2,
  45 };
  46
  47 static struct resource flash_resource = {
  48         .start          = 0x20000000,
  49         .end            = 0x20400000,
  50         .flags          = IORESOURCE_MEM,
  51 };
  52
  53 static struct platform_device flash_device = {
  54         .name           = "physmap-flash",
  55         .id             = -1,
  56         .resource       = &flash_resource,
  57         .num_resources  = 1,
  58         .dev            = {
  59                 .platform_data = &flash_data,
  60         },
  61 };
  62
  63 static struct mtd_info *flash_mtd;
  64
  65 static struct map_info rsk_flash_map = {
  66         .name           = "RSK+ Flash",
  67         .size           = 0x400000,
  68         .bankwidth      = 2,
  69 };
  70
  71 static void __init set_mtd_partitions(void)
  72 {
  73         int nr_parts = 0;
  74
  75         simple_map_init(&rsk_flash_map);
  76         flash_mtd = do_map_probe("cfi_probe", &rsk_flash_map);
  77         nr_parts = parse_mtd_partitions(flash_mtd, probes,
  78                                         &parsed_partitions, 0);
  79         /* If there is no partition table, used the hard coded table */
  80         if (nr_parts <= 0) {
  81                 flash_data.parts = rsk_partitions;
  82                 flash_data.nr_parts = ARRAY_SIZE(rsk_partitions);
  83         } else {
  84                 flash_data.nr_parts = nr_parts;
  85                 flash_data.parts = parsed_partitions;
  86         }
  87 }
  88
  89 static struct platform_device *rsk_devices[] __initdata = {
  90         &flash_device,
  91 };
  92
  93 static int __init rsk_devices_setup(void)
  94 {
  95         set_mtd_partitions();
  96         return platform_add_devices(rsk_devices,
  97                                     ARRAY_SIZE(rsk_devices));
  98 }
  99 device_initcall(rsk_devices_setup);
 100
 101 /*
 102  * The Machine Vector
 103  */
 104 static struct sh_machine_vector mv_rsk __initmv = {
 105         .mv_name        = "RSK+",
 106 };