projects / deliverable / linux.git / blame
| 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. | |
| 69f34c98 TG |
22 | * - Drive A and B use the resident flash disk (RFD) flash translation layer. |
| 23 | * - If you have created your own jffs file system and the bios overwrites | |
| 1da177e4 | 24 | * it during boot, try disabling Drive A: and B: in the boot order. |
| 1da177e4 LT |
25 | */ |
| 26 | ||
| 28f46230 | 27 | #include <linux/init.h> |
| 1da177e4 | 28 | #include <linux/module.h> |
| 1da177e4 | 29 | #include <linux/kernel.h> |
| 1da177e4 | 30 | #include <linux/mtd/map.h> |
| 28f46230 | 31 | #include <linux/mtd/mtd.h> |
| 1da177e4 | 32 | #include <linux/mtd/partitions.h> |
| 28f46230 SY |
33 | #include <linux/types.h> |
| 34 | ||
| 1da177e4 LT |
35 | |
| 36 | #define WINDOW_ADDR 0x09400000 | |
| 37 | #define WINDOW_SIZE 0x00200000 | |
| 38 | ||
| 39 | static struct map_info ts5500_map = { | |
| 40 | .name = "TS-5500 Flash", | |
| 41 | .size = WINDOW_SIZE, | |
| 42 | .bankwidth = 1, | |
| 43 | .phys = WINDOW_ADDR | |
| 44 | }; | |
| 45 | ||
| 1da177e4 LT |
46 | static struct mtd_partition ts5500_partitions[] = { |
| 47 | { | |
| 48 | .name = "Drive A", | |
| 49 | .offset = 0, | |
| 50 | .size = 0x0e0000 | |
| 51 | }, | |
| 52 | { | |
| 53 | .name = "BIOS", | |
| 54 | .offset = 0x0e0000, | |
| 55 | .size = 0x020000, | |
| 56 | }, | |
| 57 | { | |
| 58 | .name = "Drive B", | |
| 59 | .offset = 0x100000, | |
| 60 | .size = 0x100000 | |
| 61 | } | |
| 62 | }; | |
| 63 | ||
| 87d10f3c | 64 | #define NUM_PARTITIONS ARRAY_SIZE(ts5500_partitions) |
| 1da177e4 | 65 | |
| 1da177e4 LT |
66 | static struct mtd_info *mymtd; |
| 67 | ||
| 68 | static int __init init_ts5500_map(void) | |
| 69 | { | |
| 70 | int rc = 0; | |
| 71 | ||
| 72 | ts5500_map.virt = ioremap_nocache(ts5500_map.phys, ts5500_map.size); | |
| 73 | ||
| 28f46230 | 74 | if (!ts5500_map.virt) { |
| 1da177e4 LT |
75 | printk(KERN_ERR "Failed to ioremap_nocache\n"); |
| 76 | rc = -EIO; | |
| 28f46230 | 77 | goto err2; |
| 1da177e4 LT |
78 | } |
| 79 | ||
| 80 | simple_map_init(&ts5500_map); | |
| 81 | ||
| 82 | mymtd = do_map_probe("jedec_probe", &ts5500_map); | |
| 28f46230 | 83 | if (!mymtd) |
| 1da177e4 LT |
84 | mymtd = do_map_probe("map_rom", &ts5500_map); |
| 85 | ||
| 28f46230 | 86 | if (!mymtd) { |
| 1da177e4 | 87 | rc = -ENXIO; |
| 28f46230 | 88 | goto err1; |
| 1da177e4 LT |
89 | } |
| 90 | ||
| 91 | mymtd->owner = THIS_MODULE; | |
| ee0e87b1 | 92 | mtd_device_register(mymtd, ts5500_partitions, NUM_PARTITIONS); |
| 1da177e4 LT |
93 | |
| 94 | return 0; | |
| 95 | ||
| 28f46230 | 96 | err1: |
| 1da177e4 | 97 | iounmap(ts5500_map.virt); |
| 28f46230 | 98 | err2: |
| 1da177e4 LT |
99 | return rc; |
| 100 | } | |
| 101 | ||
| 102 | static void __exit cleanup_ts5500_map(void) | |
| 103 | { | |
| 104 | if (mymtd) { | |
| ee0e87b1 | 105 | mtd_device_unregister(mymtd); |
| 1da177e4 LT |
106 | map_destroy(mymtd); |
| 107 | } | |
| 108 | ||
| 109 | if (ts5500_map.virt) { | |
| 110 | iounmap(ts5500_map.virt); | |
| 111 | ts5500_map.virt = NULL; | |
| 112 | } | |
| 113 | } | |
| 114 | ||
| 115 | module_init(init_ts5500_map); | |
| 116 | module_exit(cleanup_ts5500_map); | |
| 117 | ||
| 118 | MODULE_LICENSE("GPL"); | |
| 119 | MODULE_AUTHOR("Sean Young <sean@mess.org>"); | |
| 120 | MODULE_DESCRIPTION("MTD map driver for Techology Systems TS-5500 board"); | |
| 121 |