11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ts5500_flash.c -- MTD map driver for Technology Systems TS-5500 board 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 2004 Sean Young <sean@mess.org> 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is free software; you can redistribute it and/or modify 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it under the terms of the GNU General Public License as published by 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the Free Software Foundation; either version 2 of the License, or 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (at your option) any later version. 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is distributed in the hope that it will be useful, 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * but WITHOUT ANY WARRANTY; without even the implied warranty of 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * GNU General Public License for more details. 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * You should have received a copy of the GNU General Public License 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * along with this program; if not, write to the Free Software 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Note: 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - In order for detection to work, jumper 3 must be set. 2269f34c98c1416eb74c55e38a21dbf3e294966514Thomas Gleixner * - Drive A and B use the resident flash disk (RFD) flash translation layer. 2369f34c98c1416eb74c55e38a21dbf3e294966514Thomas Gleixner * - If you have created your own jffs file system and the bios overwrites 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it during boot, try disabling Drive A: and B: in the boot order. 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2728f462308e0fcd30dcab4c50862881dfb68a627cSean Young#include <linux/init.h> 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h> 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/mtd/map.h> 3128f462308e0fcd30dcab4c50862881dfb68a627cSean Young#include <linux/mtd/mtd.h> 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/mtd/partitions.h> 3328f462308e0fcd30dcab4c50862881dfb68a627cSean Young#include <linux/types.h> 3428f462308e0fcd30dcab4c50862881dfb68a627cSean Young 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define WINDOW_ADDR 0x09400000 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define WINDOW_SIZE 0x00200000 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct map_info ts5500_map = { 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .name = "TS-5500 Flash", 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .size = WINDOW_SIZE, 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .bankwidth = 1, 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .phys = WINDOW_ADDR 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct mtd_partition ts5500_partitions[] = { 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .name = "Drive A", 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .offset = 0, 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .size = 0x0e0000 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }, 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .name = "BIOS", 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .offset = 0x0e0000, 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .size = 0x020000, 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }, 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .name = "Drive B", 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .offset = 0x100000, 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .size = 0x100000 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6487d10f3c7954d143e509a2af2bca2a27aeb3114dTobias Klauser#define NUM_PARTITIONS ARRAY_SIZE(ts5500_partitions) 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct mtd_info *mymtd; 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init init_ts5500_map(void) 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc = 0; 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ts5500_map.virt = ioremap_nocache(ts5500_map.phys, ts5500_map.size); 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7428f462308e0fcd30dcab4c50862881dfb68a627cSean Young if (!ts5500_map.virt) { 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "Failed to ioremap_nocache\n"); 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = -EIO; 7728f462308e0fcd30dcab4c50862881dfb68a627cSean Young goto err2; 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds simple_map_init(&ts5500_map); 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mymtd = do_map_probe("jedec_probe", &ts5500_map); 8328f462308e0fcd30dcab4c50862881dfb68a627cSean Young if (!mymtd) 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mymtd = do_map_probe("map_rom", &ts5500_map); 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8628f462308e0fcd30dcab4c50862881dfb68a627cSean Young if (!mymtd) { 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = -ENXIO; 8828f462308e0fcd30dcab4c50862881dfb68a627cSean Young goto err1; 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mymtd->owner = THIS_MODULE; 92ee0e87b174bb41f0310cf089262bf5dd8f95a212Jamie Iles mtd_device_register(mymtd, ts5500_partitions, NUM_PARTITIONS); 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9628f462308e0fcd30dcab4c50862881dfb68a627cSean Youngerr1: 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds iounmap(ts5500_map.virt); 9828f462308e0fcd30dcab4c50862881dfb68a627cSean Youngerr2: 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit cleanup_ts5500_map(void) 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mymtd) { 105ee0e87b174bb41f0310cf089262bf5dd8f95a212Jamie Iles mtd_device_unregister(mymtd); 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds map_destroy(mymtd); 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ts5500_map.virt) { 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds iounmap(ts5500_map.virt); 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ts5500_map.virt = NULL; 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(init_ts5500_map); 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(cleanup_ts5500_map); 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR("Sean Young <sean@mess.org>"); 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION("MTD map driver for Techology Systems TS-5500 board"); 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 122