blob: d15da6fd84c10fce1c41aaba3f96a87afe997816 (
plain) (
tree)
|
|
/*
* sharpsl-flash.c
*
* Copyright (C) 2001 Lineo Japan, Inc.
* Copyright (C) 2002 SHARP
*
* $Id: sharpsl-flash.c,v 1.5 2005/03/21 08:42:11 rpurdie Exp $
*
* based on rpxlite.c,v 1.15 2001/10/02 15:05:14 dwmw2 Exp
* Handle mapping of the flash on the RPX Lite and CLLF boards
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>
#include <asm/io.h>
#include <asm/mach-types.h>
#define WINDOW_ADDR 0x00000000
#define WINDOW_SIZE 0x00800000
#define BANK_WIDTH 2
static struct mtd_info *mymtd;
struct map_info sharpsl_map = {
.name = "sharpsl-flash",
.size = WINDOW_SIZE,
.bankwidth = BANK_WIDTH,
.phys = WINDOW_ADDR
};
static struct mtd_partition sharpsl_partitions[1] = {
{
name: "Boot PROM Filesystem",
}
};
#define NB_OF(x) (sizeof(x)/sizeof(x[0]))
int __init init_sharpsl(void)
{
struct mtd_partition *parts;
int nb_parts = 0;
char *part_type = "static";
printk(KERN_NOTICE "Sharp SL series flash device: %x at %x\n",
WINDOW_SIZE, WINDOW_ADDR);
sharpsl_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
if (!sharpsl_map.virt) {
printk("Failed to ioremap\n");
return -EIO;
}
simple_map_init(&sharpsl_map);
mymtd = do_map_probe("map_rom", &sharpsl_map);
if (!mymtd) {
iounmap(sharpsl_map.virt);
return -ENXIO;
}
mymtd->owner = THIS_MODULE;
if (machine_is_corgi() || machine_is_shepherd() || machine_is_husky()
|| machine_is_poodle()) {
sharpsl_partitions[0].size=0x006d0000;
sharpsl_partitions[0].offset=0x00120000;
} else if (machine_is_tosa()) {
sharpsl_partitions[0].size=0x006a0000;
sharpsl_partitions[0].offset=0x00160000;
} else if (machine_is_spitz()) {
sharpsl_partitions[0].size=0x006b0000;
sharpsl_partitions[0].offset=0x00140000;
} else {
map_destroy(mymtd);
iounmap(sharpsl_map.virt);
return -ENODEV;
}
parts = sharpsl_partitions;
nb_parts = NB_OF(sharpsl_partitions);
printk(KERN_NOTICE "Using %s partision definition\n", part_type);
add_mtd_partitions(mymtd, parts, nb_parts);
return 0;
}
static void __exit cleanup_sharpsl(void)
{
if (mymtd) {
del_mtd_partitions(mymtd);
map_destroy(mymtd);
}
if (sharpsl_map.virt) {
iounmap(sharpsl_map.virt);
sharpsl_map.virt = 0;
}
}
module_init(init_sharpsl);
module_exit(cleanup_sharpsl);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("SHARP (Original: Arnold Christensen <AKC@pel.dk>)");
MODULE_DESCRIPTION("MTD map driver for SHARP SL series");
|
