[deliverable/linux.git] / drivers / mtd / maps / ts5500_flash.c

/*
 * 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 1.4 2005/06/29 09:29:43 sean Exp $
 */

#include <linux/config.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/mtd/map.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/types.h>


#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
};

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))

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 err2;
	}

	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 err1;
	}

	mymtd->owner = THIS_MODULE;
	add_mtd_partitions(mymtd, ts5500_partitions, NUM_PARTITIONS);

	return 0;

err1:
	map_destroy(mymtd);
	iounmap(ts5500_map.virt);
err2:
	return rc;
}

static void __exit cleanup_ts5500_map(void)
{
	if (mymtd) {
		del_mtd_partitions(mymtd);
		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");
Commit	Line	Data
1da177e4 LT	1	/*
	2	* ts5500_flash.c -- MTD map driver for Technology Systems TS-5500 board
	3	*
	4	* Copyright (C) 2004 Sean Young <sean@mess.org>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
	19	*
	20	* Note:
	21	* - In order for detection to work, jumper 3 must be set.
e27a9960	22	* - Drive A and B use the resident flash disk (RFD) flash translation layer.
1da177e4 LT	23	* - If you have created your own jffs file system and the bios overwrites
	24	* it during boot, try disabling Drive A: and B: in the boot order.
	25	*
28f46230	26	* $Id: ts5500_flash.c,v 1.4 2005/06/29 09:29:43 sean Exp $
1da177e4 LT	27	*/
	28
	29	#include <linux/config.h>
28f46230	30	#include <linux/init.h>
1da177e4	31	#include <linux/module.h>
1da177e4	32	#include <linux/kernel.h>
1da177e4	33	#include <linux/mtd/map.h>
28f46230	34	#include <linux/mtd/mtd.h>
1da177e4	35	#include <linux/mtd/partitions.h>
28f46230 SY	36	#include <linux/types.h>
28f46230 SY	37
1da177e4 LT	38
	39	#define WINDOW_ADDR 0x09400000
	40	#define WINDOW_SIZE 0x00200000
	41
	42	static struct map_info ts5500_map = {
	43	.name = "TS-5500 Flash",
	44	.size = WINDOW_SIZE,
	45	.bankwidth = 1,
	46	.phys = WINDOW_ADDR
	47	};
	48
1da177e4 LT	49	static struct mtd_partition ts5500_partitions[] = {
	50	{
	51	.name = "Drive A",
	52	.offset = 0,
	53	.size = 0x0e0000
	54	},
	55	{
	56	.name = "BIOS",
	57	.offset = 0x0e0000,
	58	.size = 0x020000,
	59	},
	60	{
	61	.name = "Drive B",
	62	.offset = 0x100000,
	63	.size = 0x100000
	64	}
	65	};
	66
	67	#define NUM_PARTITIONS (sizeof(ts5500_partitions)/sizeof(struct mtd_partition))
	68
1da177e4 LT	69	static struct mtd_info *mymtd;
	70
	71	static int __init init_ts5500_map(void)
	72	{
	73	int rc = 0;
	74
	75	ts5500_map.virt = ioremap_nocache(ts5500_map.phys, ts5500_map.size);
	76
28f46230	77	if (!ts5500_map.virt) {
1da177e4 LT	78	printk(KERN_ERR "Failed to ioremap_nocache\n");
1da177e4 LT	79	rc = -EIO;
28f46230	80	goto err2;
1da177e4 LT	81	}
	82
	83	simple_map_init(&ts5500_map);
	84
	85	mymtd = do_map_probe("jedec_probe", &ts5500_map);
28f46230	86	if (!mymtd)
1da177e4 LT	87	mymtd = do_map_probe("map_rom", &ts5500_map);
1da177e4 LT	88
28f46230	89	if (!mymtd) {
1da177e4	90	rc = -ENXIO;
28f46230	91	goto err1;
1da177e4 LT	92	}
	93
	94	mymtd->owner = THIS_MODULE;
1da177e4	95	add_mtd_partitions(mymtd, ts5500_partitions, NUM_PARTITIONS);
1da177e4 LT	96
	97	return 0;
	98
28f46230	99	err1:
1da177e4	100	map_destroy(mymtd);
1da177e4	101	iounmap(ts5500_map.virt);
28f46230	102	err2:
1da177e4 LT	103	return rc;
	104	}
	105
	106	static void __exit cleanup_ts5500_map(void)
	107	{
	108	if (mymtd) {
1da177e4	109	del_mtd_partitions(mymtd);
1da177e4 LT	110	map_destroy(mymtd);
	111	}
	112
	113	if (ts5500_map.virt) {
	114	iounmap(ts5500_map.virt);
	115	ts5500_map.virt = NULL;
	116	}
	117	}
	118
	119	module_init(init_ts5500_map);
	120	module_exit(cleanup_ts5500_map);
	121
	122	MODULE_LICENSE("GPL");
	123	MODULE_AUTHOR("Sean Young <sean@mess.org>");
	124	MODULE_DESCRIPTION("MTD map driver for Techology Systems TS-5500 board");
	125