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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * sharpsl-flash.c
Thomas Gleixner69f34c92005-11-07 11:15:40 +00003 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 * Copyright (C) 2001 Lineo Japan, Inc.
5 * Copyright (C) 2002 SHARP
6 *
Thomas Gleixner69f34c92005-11-07 11:15:40 +00007 * $Id: sharpsl-flash.c,v 1.7 2005/11/07 11:14:28 gleixner Exp $
Linus Torvalds1da177e2005-04-16 15:20:36 -07008 *
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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#include <linux/mtd/mtd.h>
28#include <linux/mtd/map.h>
29#include <linux/mtd/partitions.h>
Richard Purdieba380692005-03-21 00:10:24 +000030#include <asm/io.h>
31#include <asm/mach-types.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070032
33#define WINDOW_ADDR 0x00000000
Richard Purdieba380692005-03-21 00:10:24 +000034#define WINDOW_SIZE 0x00800000
Linus Torvalds1da177e2005-04-16 15:20:36 -070035#define BANK_WIDTH 2
36
37static struct mtd_info *mymtd;
38
39struct map_info sharpsl_map = {
40 .name = "sharpsl-flash",
41 .size = WINDOW_SIZE,
42 .bankwidth = BANK_WIDTH,
43 .phys = WINDOW_ADDR
44};
45
46static struct mtd_partition sharpsl_partitions[1] = {
47 {
Richard Purdieba380692005-03-21 00:10:24 +000048 name: "Boot PROM Filesystem",
Linus Torvalds1da177e2005-04-16 15:20:36 -070049 }
50};
51
Linus Torvalds1da177e2005-04-16 15:20:36 -070052int __init init_sharpsl(void)
53{
54 struct mtd_partition *parts;
55 int nb_parts = 0;
56 char *part_type = "static";
57
Thomas Gleixner69f34c92005-11-07 11:15:40 +000058 printk(KERN_NOTICE "Sharp SL series flash device: %x at %x\n",
Richard Purdie8f5a4482005-03-21 08:42:14 +000059 WINDOW_SIZE, WINDOW_ADDR);
Linus Torvalds1da177e2005-04-16 15:20:36 -070060 sharpsl_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
61 if (!sharpsl_map.virt) {
62 printk("Failed to ioremap\n");
63 return -EIO;
64 }
Richard Purdieba380692005-03-21 00:10:24 +000065
66 simple_map_init(&sharpsl_map);
67
Linus Torvalds1da177e2005-04-16 15:20:36 -070068 mymtd = do_map_probe("map_rom", &sharpsl_map);
69 if (!mymtd) {
70 iounmap(sharpsl_map.virt);
71 return -ENXIO;
72 }
73
74 mymtd->owner = THIS_MODULE;
75
Thomas Gleixner69f34c92005-11-07 11:15:40 +000076 if (machine_is_corgi() || machine_is_shepherd() || machine_is_husky()
Richard Purdie8f5a4482005-03-21 08:42:14 +000077 || machine_is_poodle()) {
Richard Purdieba380692005-03-21 00:10:24 +000078 sharpsl_partitions[0].size=0x006d0000;
79 sharpsl_partitions[0].offset=0x00120000;
80 } else if (machine_is_tosa()) {
81 sharpsl_partitions[0].size=0x006a0000;
82 sharpsl_partitions[0].offset=0x00160000;
Richard Purdie62052d42005-09-16 19:27:31 -070083 } else if (machine_is_spitz() || machine_is_akita() || machine_is_borzoi()) {
Richard Purdieba380692005-03-21 00:10:24 +000084 sharpsl_partitions[0].size=0x006b0000;
85 sharpsl_partitions[0].offset=0x00140000;
Richard Purdie8f5a4482005-03-21 08:42:14 +000086 } else {
87 map_destroy(mymtd);
Thomas Gleixner69f34c92005-11-07 11:15:40 +000088 iounmap(sharpsl_map.virt);
Richard Purdie8f5a4482005-03-21 08:42:14 +000089 return -ENODEV;
90 }
Thomas Gleixner69f34c92005-11-07 11:15:40 +000091
Linus Torvalds1da177e2005-04-16 15:20:36 -070092 parts = sharpsl_partitions;
Tobias Klauser87d10f32006-03-31 02:29:45 -080093 nb_parts = ARRAY_SIZE(sharpsl_partitions);
Linus Torvalds1da177e2005-04-16 15:20:36 -070094
95 printk(KERN_NOTICE "Using %s partision definition\n", part_type);
96 add_mtd_partitions(mymtd, parts, nb_parts);
97
98 return 0;
99}
100
101static void __exit cleanup_sharpsl(void)
102{
103 if (mymtd) {
104 del_mtd_partitions(mymtd);
105 map_destroy(mymtd);
106 }
107 if (sharpsl_map.virt) {
108 iounmap(sharpsl_map.virt);
109 sharpsl_map.virt = 0;
110 }
111}
112
113module_init(init_sharpsl);
114module_exit(cleanup_sharpsl);
115
116MODULE_LICENSE("GPL");
117MODULE_AUTHOR("SHARP (Original: Arnold Christensen <AKC@pel.dk>)");
118MODULE_DESCRIPTION("MTD map driver for SHARP SL series");