From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from 82-168-191-45-bbxl.xdsl.tiscali.nl ([82.168.191.45] helo=levin) by canuck.infradead.org with esmtp (Exim 4.42 #1 (Red Hat Linux)) id 1C8h6Q-0004bR-Sk for linux-mtd@lists.infradead.org; Sat, 18 Sep 2004 11:26:21 -0400 Date: Sat, 18 Sep 2004 17:26:06 +0200 From: Sean Young To: David Woodhouse Message-ID: <20040918152606.GA3666@levin.pad.mess.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Cc: linux-mtd@lists.infradead.org Subject: [PATCH] New mapping driver for Technology Systems TS-5500 board List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Here is a new mapping driver, patch against kernel 2.6.9-rc2 (I hope that's okay): MTD Mapping driver for Technology Systems TS-5500 board Signed-off-by: Sean Young Note that the bios on this board uses a proprietary ftl of General Software which I haven't been able to figure out. Any ideas here would be most welcome. Sean diff -uprN ./drivers/mtd/maps/Kconfig /usr/src/linux-2.6.6/drivers/mtd/maps/Kconfig --- ./drivers/mtd/maps/Kconfig 2004-09-18 16:52:09.000000000 +0200 +++ /usr/src/linux-2.6.6/drivers/mtd/maps/Kconfig 2004-09-18 16:51:53.000000000 +0200 @@ -84,6 +84,25 @@ config MTD_SC520CDP Dual-in-line JEDEC chip. This 'mapping' driver supports that arrangement, implementing three MTD devices. +config MTD_TS5500 + tristate "JEDEC Flash device mapped on Technologic Systems TS-5500" + depends on X86 && MTD_JEDECPROBE && MTD_PARTITIONS + help + This provides a driver for the on-board flash of the Technologic + System's TS-5500 board. The flash is split into 3 partitions + which are accessed as separate MTD devices. + + mtd0 and mtd2 are the two BIOS drives. Unfortunately the BIOS + uses a proprietary flash translation layer from General Software, + which is not supported (the drives cannot be mounted). You can + create your own file system (jffs for example), but the BIOS + won't be able to boot from it. + + mtd1 allows you to reprogram your BIOS. BE VERY CAREFUL. + + Note that if jumper 3 ("Write Enable Drive A") must be set + otherwise detection won't succeeed. + config MTD_NETSC520 tristate "CFI Flash device mapped on AMD NetSc520" depends on X86 && MTD_CFI && MTD_PARTITIONS diff -uprN ./drivers/mtd/maps/Makefile /usr/src/linux-2.6.6/drivers/mtd/maps/Makefile --- ./drivers/mtd/maps/Makefile 2004-09-18 16:52:09.000000000 +0200 +++ /usr/src/linux-2.6.6/drivers/mtd/maps/Makefile 2004-09-15 22:54:34.000000000 +0200 @@ -33,6 +33,7 @@ obj-$(CONFIG_MTD_TQM8XXL) += tqm8xxl.o obj-$(CONFIG_MTD_SA1100) += sa1100-flash.o obj-$(CONFIG_MTD_SBC_GXX) += sbc_gxx.o obj-$(CONFIG_MTD_SC520CDP) += sc520cdp.o +obj-$(CONFIG_MTD_TS5500) += ts5500_flash.o obj-$(CONFIG_MTD_NETSC520) += netsc520.o obj-$(CONFIG_MTD_SUN_UFLASH) += sun_uflash.o obj-$(CONFIG_MTD_VMAX) += vmax301.o diff -uprN ./drivers/mtd/maps/ts5500_flash.c /usr/src/linux-2.6.6/drivers/mtd/maps/ts5500_flash.c --- ./drivers/mtd/maps/ts5500_flash.c 1970-01-01 01:00:00.000000000 +0100 +++ /usr/src/linux-2.6.6/drivers/mtd/maps/ts5500_flash.c 2004-09-18 16:47:51.000000000 +0200 @@ -0,0 +1,139 @@ +/* + * ts5500.c -- MTD map driver for Technology Systems TS-5500 board + * + * Copyright (C) 2004 Sean Young + * + * 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 a proprietary FTL from General Software which isn't + * supported as of yet so standard drives can't be mounted; you can create + * your own (e.g. jffs) file system. + * - 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. + */ + +#include +#include +#include +#include +#include +#include +#include + +#ifdef CONFIG_MTD_PARTITIONS +#include +#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 = (void*)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((void *)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((void *)ts5500_map.virt); + ts5500_map.virt = 0; + } +} + +module_init(init_ts5500_map); +module_exit(cleanup_ts5500_map); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Sean Young "); +MODULE_DESCRIPTION("MTD map driver for Techology Systems TS-5500 board"); +