]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * sharpsl-flash.c | |
3 | * | |
4 | * Copyright (C) 2001 Lineo Japan, Inc. | |
5 | * Copyright (C) 2002 SHARP | |
6 | * | |
8f5a4486 | 7 | * $Id: sharpsl-flash.c,v 1.5 2005/03/21 08:42:11 rpurdie Exp $ |
1da177e4 LT |
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> | |
1da177e4 LT |
27 | #include <linux/mtd/mtd.h> |
28 | #include <linux/mtd/map.h> | |
29 | #include <linux/mtd/partitions.h> | |
ba380698 RP |
30 | #include <asm/io.h> |
31 | #include <asm/mach-types.h> | |
1da177e4 LT |
32 | |
33 | #define WINDOW_ADDR 0x00000000 | |
ba380698 | 34 | #define WINDOW_SIZE 0x00800000 |
1da177e4 LT |
35 | #define BANK_WIDTH 2 |
36 | ||
37 | static struct mtd_info *mymtd; | |
38 | ||
39 | struct map_info sharpsl_map = { | |
40 | .name = "sharpsl-flash", | |
41 | .size = WINDOW_SIZE, | |
42 | .bankwidth = BANK_WIDTH, | |
43 | .phys = WINDOW_ADDR | |
44 | }; | |
45 | ||
46 | static struct mtd_partition sharpsl_partitions[1] = { | |
47 | { | |
ba380698 | 48 | name: "Boot PROM Filesystem", |
1da177e4 LT |
49 | } |
50 | }; | |
51 | ||
52 | #define NB_OF(x) (sizeof(x)/sizeof(x[0])) | |
53 | ||
54 | int __init init_sharpsl(void) | |
55 | { | |
56 | struct mtd_partition *parts; | |
57 | int nb_parts = 0; | |
58 | char *part_type = "static"; | |
59 | ||
8f5a4486 RP |
60 | printk(KERN_NOTICE "Sharp SL series flash device: %x at %x\n", |
61 | WINDOW_SIZE, WINDOW_ADDR); | |
1da177e4 LT |
62 | sharpsl_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE); |
63 | if (!sharpsl_map.virt) { | |
64 | printk("Failed to ioremap\n"); | |
65 | return -EIO; | |
66 | } | |
ba380698 RP |
67 | |
68 | simple_map_init(&sharpsl_map); | |
69 | ||
1da177e4 LT |
70 | mymtd = do_map_probe("map_rom", &sharpsl_map); |
71 | if (!mymtd) { | |
72 | iounmap(sharpsl_map.virt); | |
73 | return -ENXIO; | |
74 | } | |
75 | ||
76 | mymtd->owner = THIS_MODULE; | |
77 | ||
8f5a4486 RP |
78 | if (machine_is_corgi() || machine_is_shepherd() || machine_is_husky() |
79 | || machine_is_poodle()) { | |
ba380698 RP |
80 | sharpsl_partitions[0].size=0x006d0000; |
81 | sharpsl_partitions[0].offset=0x00120000; | |
82 | } else if (machine_is_tosa()) { | |
83 | sharpsl_partitions[0].size=0x006a0000; | |
84 | sharpsl_partitions[0].offset=0x00160000; | |
62052d42 | 85 | } else if (machine_is_spitz() || machine_is_akita() || machine_is_borzoi()) { |
ba380698 RP |
86 | sharpsl_partitions[0].size=0x006b0000; |
87 | sharpsl_partitions[0].offset=0x00140000; | |
8f5a4486 RP |
88 | } else { |
89 | map_destroy(mymtd); | |
90 | iounmap(sharpsl_map.virt); | |
91 | return -ENODEV; | |
92 | } | |
ba380698 | 93 | |
1da177e4 LT |
94 | parts = sharpsl_partitions; |
95 | nb_parts = NB_OF(sharpsl_partitions); | |
96 | ||
97 | printk(KERN_NOTICE "Using %s partision definition\n", part_type); | |
98 | add_mtd_partitions(mymtd, parts, nb_parts); | |
99 | ||
100 | return 0; | |
101 | } | |
102 | ||
103 | static void __exit cleanup_sharpsl(void) | |
104 | { | |
105 | if (mymtd) { | |
106 | del_mtd_partitions(mymtd); | |
107 | map_destroy(mymtd); | |
108 | } | |
109 | if (sharpsl_map.virt) { | |
110 | iounmap(sharpsl_map.virt); | |
111 | sharpsl_map.virt = 0; | |
112 | } | |
113 | } | |
114 | ||
115 | module_init(init_sharpsl); | |
116 | module_exit(cleanup_sharpsl); | |
117 | ||
118 | MODULE_LICENSE("GPL"); | |
119 | MODULE_AUTHOR("SHARP (Original: Arnold Christensen <AKC@pel.dk>)"); | |
120 | MODULE_DESCRIPTION("MTD map driver for SHARP SL series"); |