mirror of
https://github.com/torvalds/linux.git
synced 2024-11-16 09:02:00 +00:00
121 lines
3.0 KiB
C
121 lines
3.0 KiB
C
/*
|
|
* sharpsl-flash.c
|
|
*
|
|
* Copyright (C) 2001 Lineo Japan, Inc.
|
|
* Copyright (C) 2002 SHARP
|
|
*
|
|
* $Id: sharpsl-flash.c,v 1.7 2005/11/07 11:14:28 gleixner 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() || machine_is_akita() || machine_is_borzoi()) {
|
|
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");
|