arch/sh/boards/renesas/rsk7203/setup.c

   1 /*
   2  * Renesas Technology Europe RSK+ 7203 Support.
   3  *
   4  * Copyright (C) 2008 Paul Mundt
   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/mtd/mtd.h>
  14 #include <linux/mtd/partitions.h>
  15 #include <linux/mtd/physmap.h>
  16 #include <linux/mtd/map.h>
  17 #include <asm/machvec.h>
  18 #include <asm/io.h>
  19
  20 static struct resource smc911x_resources[] = {
  21         [0] = {
  22                 .start          = 0x24000000,
  23                 .end            = 0x24000000 + 0x100,
  24                 .flags          = IORESOURCE_MEM,
  25         },
  26         [1] = {
  27                 .start          = 64,
  28                 .end            = 64,
  29                 .flags          = IORESOURCE_IRQ,
  30         },
  31 };
  32
  33 static struct platform_device smc911x_device = {
  34         .name           = "smc911x",
  35         .id             = -1,
  36         .num_resources  = ARRAY_SIZE(smc911x_resources),
  37         .resource       = smc911x_resources,
  38 };
  39
  40 static const char *probes[] = { "cmdlinepart", NULL };
  41
  42 static struct mtd_partition *parsed_partitions;
  43
  44 static struct mtd_partition rsk7203_partitions[] = {
  45         {
  46                 .name           = "Bootloader",
  47                 .offset         = 0x00000000,
  48                 .size           = 0x00040000,
  49                 .mask_flags     = MTD_WRITEABLE,
  50         }, {
  51                 .name           = "Kernel",
  52                 .offset         = MTDPART_OFS_NXTBLK,
  53                 .size           = 0x001c0000,
  54         }, {
  55                 .name           = "Flash_FS",
  56                 .offset         = MTDPART_OFS_NXTBLK,
  57                 .size           = MTDPART_SIZ_FULL,
  58         }
  59 };
  60
  61 static struct physmap_flash_data flash_data = {
  62         .width          = 2,
  63 };
  64
  65 static struct resource flash_resource = {
  66         .start          = 0x20000000,
  67         .end            = 0x20400000,
  68         .flags          = IORESOURCE_MEM,
  69 };
  70
  71 static struct platform_device flash_device = {
  72         .name           = "physmap-flash",
  73         .id             = -1,
  74         .resource       = &flash_resource,
  75         .num_resources  = 1,
  76         .dev            = {
  77                 .platform_data = &flash_data,
  78         },
  79 };
  80
  81 static struct mtd_info *flash_mtd;
  82
  83 static struct map_info rsk7203_flash_map = {
  84         .name           = "RSK+ Flash",
  85         .size           = 0x400000,
  86         .bankwidth      = 2,
  87 };
  88
  89 static void __init set_mtd_partitions(void)
  90 {
  91         int nr_parts = 0;
  92
  93         simple_map_init(&rsk7203_flash_map);
  94         flash_mtd = do_map_probe("cfi_probe", &rsk7203_flash_map);
  95         nr_parts = parse_mtd_partitions(flash_mtd, probes,
  96                                         &parsed_partitions, 0);
  97         /* If there is no partition table, used the hard coded table */
  98         if (nr_parts <= 0) {
  99                 flash_data.parts = rsk7203_partitions;
 100                 flash_data.nr_parts = ARRAY_SIZE(rsk7203_partitions);
 101         } else {
 102                 flash_data.nr_parts = nr_parts;
 103                 flash_data.parts = parsed_partitions;
 104         }
 105 }
 106
 107
 108 static struct platform_device *rsk7203_devices[] __initdata = {
 109         &smc911x_device,
 110         &flash_device,
 111 };
 112
 113 static int __init rsk7203_devices_setup(void)
 114 {
 115         set_mtd_partitions();
 116         return platform_add_devices(rsk7203_devices,
 117                                     ARRAY_SIZE(rsk7203_devices));
 118 }
 119 device_initcall(rsk7203_devices_setup);
 120
 121 /*
 122  * The Machine Vector
 123  */
 124 static struct sh_machine_vector mv_rsk7203 __initmv = {
 125         .mv_name        = "RSK+7203",
 126 };