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flash.c

/* Flash mappings for the MB93090-MB00 motherboard
 *
 * Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public Licence
 * as published by the Free Software Foundation; either version
 * 2 of the Licence, or (at your option) any later version.
 */

#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>

#define MB93090_BOOTROM_ADDR  0xFF000000  /* Boot ROM */
#define MB93090_BOOTROM_SIZE  (2 * 1024 * 1024)
#define MB93090_USERROM_ADDR  0xFF200000  /* User ROM */
#define MB93090_USERROM_SIZE  (2 * 1024 * 1024)

/*
 * default MTD partition table for both main flash devices, expected to be
 * overridden by RedBoot
 */
static struct mtd_partition mb93090_partitions[] = {
      {
            .name       = "Filesystem",
            .size       = MTDPART_SIZ_FULL,
            .offset           = 0,
      }
};

/*
 * Definition of the MB93090 Boot ROM (on the CPU card)
 */
static struct physmap_flash_data mb93090_bootrom_data = {
      .width            = 2,
      .nr_parts   = 2,
      .parts            = mb93090_partitions,
};

static struct resource mb93090_bootrom_resource = {
      .start            = MB93090_BOOTROM_ADDR,
      .end        = MB93090_BOOTROM_ADDR + MB93090_BOOTROM_SIZE - 1,
      .flags            = IORESOURCE_MEM,
};

static struct platform_device mb93090_bootrom = {
      .name       = "physmap-flash",
      .id         = 0,
      .dev.platform_data = &mb93090_bootrom_data,
      .num_resources    = 1,
      .resource   = &mb93090_bootrom_resource,
};

/*
 * Definition of the MB93090 User ROM definition (on the motherboard)
 */
static struct physmap_flash_data mb93090_userrom_data = {
      .width            = 2,
      .nr_parts   = 2,
      .parts            = mb93090_partitions,
};

static struct resource mb93090_userrom_resource = {
      .start            = MB93090_USERROM_ADDR,
      .end        = MB93090_USERROM_ADDR + MB93090_USERROM_SIZE - 1,
      .flags            = IORESOURCE_MEM,
};

static struct platform_device mb93090_userrom = {
      .name       = "physmap-flash",
      .id         = 1,
      .dev.platform_data = &mb93090_userrom_data,
      .num_resources    = 1,
      .resource   = &mb93090_userrom_resource,
};

/*
 * register the MB93090 flashes
 */
static int __init mb93090_mtd_init(void)
{
      platform_device_register(&mb93090_bootrom);
      platform_device_register(&mb93090_userrom);
      return 0;
}

module_init(mb93090_mtd_init);

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