arch/sh/boards/board-rsk7203.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/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 <linux/smc911x.h>
  19 #include <linux/gpio.h>
  20 #include <asm/machvec.h>
  21 #include <asm/io.h>
  22 #include <cpu/sh7203.h>
  23
  24 static struct smc911x_platdata smc911x_info = {
  25         .flags          = SMC911X_USE_16BIT,
  26         .irq_flags      = IRQF_TRIGGER_LOW,
  27 };
  28
  29 static struct resource smc911x_resources[] = {
  30         [0] = {
  31                 .start          = 0x24000000,
  32                 .end            = 0x24000000 + 0x100,
  33                 .flags          = IORESOURCE_MEM,
  34         },
  35         [1] = {
  36                 .start          = 64,
  37                 .end            = 64,
  38                 .flags          = IORESOURCE_IRQ,
  39         },
  40 };
  41
  42 static struct platform_device smc911x_device = {
  43         .name           = "smc911x",
  44         .id             = -1,
  45         .num_resources  = ARRAY_SIZE(smc911x_resources),
  46         .resource       = smc911x_resources,
  47         .dev            = {
  48                 .platform_data = &smc911x_info,
  49         },
  50 };
  51
  52 static const char *probes[] = { "cmdlinepart", NULL };
  53
  54 static struct mtd_partition *parsed_partitions;
  55
  56 static struct mtd_partition rsk7203_partitions[] = {
  57         {
  58                 .name           = "Bootloader",
  59                 .offset         = 0x00000000,
  60                 .size           = 0x00040000,
  61                 .mask_flags     = MTD_WRITEABLE,
  62         }, {
  63                 .name           = "Kernel",
  64                 .offset         = MTDPART_OFS_NXTBLK,
  65                 .size           = 0x001c0000,
  66         }, {
  67                 .name           = "Flash_FS",
  68                 .offset         = MTDPART_OFS_NXTBLK,
  69                 .size           = MTDPART_SIZ_FULL,
  70         }
  71 };
  72
  73 static struct physmap_flash_data flash_data = {
  74         .width          = 2,
  75 };
  76
  77 static struct resource flash_resource = {
  78         .start          = 0x20000000,
  79         .end            = 0x20400000,
  80         .flags          = IORESOURCE_MEM,
  81 };
  82
  83 static struct platform_device flash_device = {
  84         .name           = "physmap-flash",
  85         .id             = -1,
  86         .resource       = &flash_resource,
  87         .num_resources  = 1,
  88         .dev            = {
  89                 .platform_data = &flash_data,
  90         },
  91 };
  92
  93 static struct mtd_info *flash_mtd;
  94
  95 static struct map_info rsk7203_flash_map = {
  96         .name           = "RSK+ Flash",
  97         .size           = 0x400000,
  98         .bankwidth      = 2,
  99 };
 100
 101 static void __init set_mtd_partitions(void)
 102 {
 103         int nr_parts = 0;
 104
 105         simple_map_init(&rsk7203_flash_map);
 106         flash_mtd = do_map_probe("cfi_probe", &rsk7203_flash_map);
 107         nr_parts = parse_mtd_partitions(flash_mtd, probes,
 108                                         &parsed_partitions, 0);
 109         /* If there is no partition table, used the hard coded table */
 110         if (nr_parts <= 0) {
 111                 flash_data.parts = rsk7203_partitions;
 112                 flash_data.nr_parts = ARRAY_SIZE(rsk7203_partitions);
 113         } else {
 114                 flash_data.nr_parts = nr_parts;
 115                 flash_data.parts = parsed_partitions;
 116         }
 117 }
 118
 119
 120 static struct platform_device *rsk7203_devices[] __initdata = {
 121         &smc911x_device,
 122         &flash_device,
 123 };
 124
 125 static int __init rsk7203_devices_setup(void)
 126 {
 127         /* Select pins for SCIF0 */
 128         gpio_request(GPIO_FN_TXD0, NULL);
 129         gpio_request(GPIO_FN_RXD0, NULL);
 130
 131         /* Lit LED0 */
 132         gpio_request(GPIO_PE10, NULL);
 133         gpio_direction_output(GPIO_PE10, 0);
 134         gpio_export(GPIO_PE10, 0);
 135
 136         set_mtd_partitions();
 137         return platform_add_devices(rsk7203_devices,
 138                                     ARRAY_SIZE(rsk7203_devices));
 139 }
 140 device_initcall(rsk7203_devices_setup);
 141
 142 /*
 143  * The Machine Vector
 144  */
 145 static struct sh_machine_vector mv_rsk7203 __initmv = {
 146         .mv_name        = "RSK+7203",
 147 };