release/src-rt-6.x.4708/linux/linux-2.6.36/arch/frv/mb93090-mb00/flash.c

   1 /* Flash mappings for the MB93090-MB00 motherboard
   2  *
   3  * Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public Licence
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the Licence, or (at your option) any later version.
  10  */
  11
  12 #include <linux/init.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/mtd/partitions.h>
  15 #include <linux/mtd/physmap.h>
  16
  17 #define MB93090_BOOTROM_ADDR    0xFF000000      /* Boot ROM */
  18 #define MB93090_BOOTROM_SIZE    (2 * 1024 * 1024)
  19 #define MB93090_USERROM_ADDR    0xFF200000      /* User ROM */
  20 #define MB93090_USERROM_SIZE    (2 * 1024 * 1024)
  21
  22 /*
  23  * default MTD partition table for both main flash devices, expected to be
  24  * overridden by RedBoot
  25  */
  26 static struct mtd_partition mb93090_partitions[] = {
  27         {
  28                 .name           = "Filesystem",
  29                 .size           = MTDPART_SIZ_FULL,
  30                 .offset         = 0,
  31         }
  32 };
  33
  34 /*
  35  * Definition of the MB93090 Boot ROM (on the CPU card)
  36  */
  37 static struct physmap_flash_data mb93090_bootrom_data = {
  38         .width          = 2,
  39         .nr_parts       = 2,
  40         .parts          = mb93090_partitions,
  41 };
  42
  43 static struct resource mb93090_bootrom_resource = {
  44         .start          = MB93090_BOOTROM_ADDR,
  45         .end            = MB93090_BOOTROM_ADDR + MB93090_BOOTROM_SIZE - 1,
  46         .flags          = IORESOURCE_MEM,
  47 };
  48
  49 static struct platform_device mb93090_bootrom = {
  50         .name           = "physmap-flash",
  51         .id             = 0,
  52         .dev.platform_data = &mb93090_bootrom_data,
  53         .num_resources  = 1,
  54         .resource       = &mb93090_bootrom_resource,
  55 };
  56
  57 /*
  58  * Definition of the MB93090 User ROM definition (on the motherboard)
  59  */
  60 static struct physmap_flash_data mb93090_userrom_data = {
  61         .width          = 2,
  62         .nr_parts       = 2,
  63         .parts          = mb93090_partitions,
  64 };
  65
  66 static struct resource mb93090_userrom_resource = {
  67         .start          = MB93090_USERROM_ADDR,
  68         .end            = MB93090_USERROM_ADDR + MB93090_USERROM_SIZE - 1,
  69         .flags          = IORESOURCE_MEM,
  70 };
  71
  72 static struct platform_device mb93090_userrom = {
  73         .name           = "physmap-flash",
  74         .id             = 1,
  75         .dev.platform_data = &mb93090_userrom_data,
  76         .num_resources  = 1,
  77         .resource       = &mb93090_userrom_resource,
  78 };
  79
  80 /*
  81  * register the MB93090 flashes
  82  */
  83 static int __init mb93090_mtd_init(void)
  84 {
  85         platform_device_register(&mb93090_bootrom);
  86         platform_device_register(&mb93090_userrom);
  87         return 0;
  88 }
  89
  90 module_init(mb93090_mtd_init);