/*
* ts5500_flash.c -- MTD map driver for Technology Systems TS-5500 board
*
* Copyright (C) 2004 Sean Young <sean@mess.org>
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
* Note:
* - In order for detection to work, jumper 3 must be set.
* - Drive A and B use the resident flash disk (RFD) flash translation layer.
* - If you have created your own jffs file system and the bios overwrites
* it during boot, try disabling Drive A: and B: in the boot order.
*
* $Id: ts5500_flash.c,v 1.3 2005/06/16 08:49:30 sean Exp $
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#ifdef CONFIG_MTD_PARTITIONS
#include <linux/mtd/partitions.h>
#endif
#define WINDOW_ADDR 0x09400000
#define WINDOW_SIZE 0x00200000
static struct map_info ts5500_map = {
.name = "TS-5500 Flash",
.size = WINDOW_SIZE,
.bankwidth = 1,
.phys = WINDOW_ADDR
};
#ifdef CONFIG_MTD_PARTITIONS
static struct mtd_partition ts5500_partitions[] = {
{
.name = "Drive A",
.offset = 0,
.size = 0x0e0000
},
{
.name = "BIOS",
.offset = 0x0e0000,
.size = 0x020000,
},
{
.name = "Drive B",
.offset = 0x100000,
.size = 0x100000
}
};
#define NUM_PARTITIONS (sizeof(ts5500_partitions)/sizeof(struct mtd_partition))
#endif
static struct mtd_info *mymtd;
static int __init init_ts5500_map(void)
{
int rc = 0;
ts5500_map.virt = ioremap_nocache(ts5500_map.phys, ts5500_map.size);
if(!ts5500_map.virt) {
printk(KERN_ERR "Failed to ioremap_nocache\n");
rc = -EIO;
goto err_out_ioremap;
}
simple_map_init(&ts5500_map);
mymtd = do_map_probe("jedec_probe", &ts5500_map);
if(!mymtd)
mymtd = do_map_probe("map_rom", &ts5500_map);
if(!mymtd) {
rc = -ENXIO;
goto err_out_map;
}
mymtd->owner = THIS_MODULE;
#ifdef CONFIG_MTD_PARTITIONS
add_mtd_partitions(mymtd, ts5500_partitions, NUM_PARTITIONS);
#else
add_mtd_device(mymtd);
#endif
return 0;
err_out_map:
map_destroy(mymtd);
err_out_ioremap:
iounmap(ts5500_map.virt);
return rc;
}
static void __exit cleanup_ts5500_map(void)
{
if (mymtd) {
#ifdef CONFIG_MTD_PARTITIONS
del_mtd_partitions(mymtd);
#else
del_mtd_device(mymtd);
#endif
map_destroy(mymtd);
}
if (ts5500_map.virt) {
iounmap(ts5500_map.virt);
ts5500_map.virt = NULL;
}
}
module_init(init_ts5500_map);
module_exit(cleanup_ts5500_map);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Sean Young <sean@mess.org>");
MODULE_DESCRIPTION("MTD map driver for Techology Systems TS-5500 board");
