1. 根目录:
2. arch
3. frv
4. mb93090-mb00
5. 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/module.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);