| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * sharpsl-flash.c |
| 3 | * |
| 4 | * Copyright (C) 2001 Lineo Japan, Inc. |
| 5 | * Copyright (C) 2002 SHARP |
| 6 | * |
| 7 | * $Id: sharpsl-flash.c,v 1.2 2004/11/24 20:38:06 rpurdie Exp $ |
| 8 | * |
| 9 | * based on rpxlite.c,v 1.15 2001/10/02 15:05:14 dwmw2 Exp |
| 10 | * Handle mapping of the flash on the RPX Lite and CLLF boards |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU General Public License as published by |
| 14 | * the Free Software Foundation; either version 2 of the License, or |
| 15 | * (at your option) any later version. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, |
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | * GNU General Public License for more details. |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/types.h> |
| 26 | #include <linux/kernel.h> |
| 27 | #include <asm/io.h> |
| 28 | #include <linux/mtd/mtd.h> |
| 29 | #include <linux/mtd/map.h> |
| 30 | #include <linux/mtd/partitions.h> |
| 31 | |
| 32 | #define WINDOW_ADDR 0x00000000 |
| 33 | #define WINDOW_SIZE 0x01000000 |
| 34 | #define BANK_WIDTH 2 |
| 35 | |
| 36 | static struct mtd_info *mymtd; |
| 37 | |
| 38 | struct map_info sharpsl_map = { |
| 39 | .name = "sharpsl-flash", |
| 40 | .size = WINDOW_SIZE, |
| 41 | .bankwidth = BANK_WIDTH, |
| 42 | .phys = WINDOW_ADDR |
| 43 | }; |
| 44 | |
| 45 | static struct mtd_partition sharpsl_partitions[1] = { |
| 46 | { |
| 47 | name: "Filesystem", |
| 48 | size: 0x006d0000, |
| 49 | offset: 0x00120000 |
| 50 | } |
| 51 | }; |
| 52 | |
| 53 | #define NB_OF(x) (sizeof(x)/sizeof(x[0])) |
| 54 | |
| 55 | int __init init_sharpsl(void) |
| 56 | { |
| 57 | struct mtd_partition *parts; |
| 58 | int nb_parts = 0; |
| 59 | char *part_type = "static"; |
| 60 | |
| 61 | printk(KERN_NOTICE "Sharp SL series flash device: %x at %x\n", WINDOW_SIZE, WINDOW_ADDR); |
| 62 | sharpsl_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE); |
| 63 | if (!sharpsl_map.virt) { |
| 64 | printk("Failed to ioremap\n"); |
| 65 | return -EIO; |
| 66 | } |
| 67 | mymtd = do_map_probe("map_rom", &sharpsl_map); |
| 68 | if (!mymtd) { |
| 69 | iounmap(sharpsl_map.virt); |
| 70 | return -ENXIO; |
| 71 | } |
| 72 | |
| 73 | mymtd->owner = THIS_MODULE; |
| 74 | |
| 75 | parts = sharpsl_partitions; |
| 76 | nb_parts = NB_OF(sharpsl_partitions); |
| 77 | |
| 78 | printk(KERN_NOTICE "Using %s partision definition\n", part_type); |
| 79 | add_mtd_partitions(mymtd, parts, nb_parts); |
| 80 | |
| 81 | return 0; |
| 82 | } |
| 83 | |
| 84 | static void __exit cleanup_sharpsl(void) |
| 85 | { |
| 86 | if (mymtd) { |
| 87 | del_mtd_partitions(mymtd); |
| 88 | map_destroy(mymtd); |
| 89 | } |
| 90 | if (sharpsl_map.virt) { |
| 91 | iounmap(sharpsl_map.virt); |
| 92 | sharpsl_map.virt = 0; |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | module_init(init_sharpsl); |
| 97 | module_exit(cleanup_sharpsl); |
| 98 | |
| 99 | MODULE_LICENSE("GPL"); |
| 100 | MODULE_AUTHOR("SHARP (Original: Arnold Christensen <AKC@pel.dk>)"); |
| 101 | MODULE_DESCRIPTION("MTD map driver for SHARP SL series"); |