| /* |
| * 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"); |
| |