flash.c

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/* Flash mappings for the MB93090-MB00 motherboard
 *
 * Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells ([email protected])
 *
 * 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);