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1da177e4 LT |
1 | /* |
2 | * sharpsl-flash.c | |
69f34c98 | 3 | * |
1da177e4 LT |
4 | * Copyright (C) 2001 Lineo Japan, Inc. |
5 | * Copyright (C) 2002 SHARP | |
6 | * | |
1da177e4 LT |
7 | * based on rpxlite.c,v 1.15 2001/10/02 15:05:14 dwmw2 Exp |
8 | * Handle mapping of the flash on the RPX Lite and CLLF boards | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | */ | |
21 | ||
22 | #include <linux/module.h> | |
23 | #include <linux/types.h> | |
24 | #include <linux/kernel.h> | |
1da177e4 LT |
25 | #include <linux/mtd/mtd.h> |
26 | #include <linux/mtd/map.h> | |
27 | #include <linux/mtd/partitions.h> | |
ba380698 RP |
28 | #include <asm/io.h> |
29 | #include <asm/mach-types.h> | |
1da177e4 LT |
30 | |
31 | #define WINDOW_ADDR 0x00000000 | |
ba380698 | 32 | #define WINDOW_SIZE 0x00800000 |
1da177e4 LT |
33 | #define BANK_WIDTH 2 |
34 | ||
35 | static struct mtd_info *mymtd; | |
36 | ||
37 | struct map_info sharpsl_map = { | |
38 | .name = "sharpsl-flash", | |
39 | .size = WINDOW_SIZE, | |
40 | .bankwidth = BANK_WIDTH, | |
41 | .phys = WINDOW_ADDR | |
42 | }; | |
43 | ||
44 | static struct mtd_partition sharpsl_partitions[1] = { | |
45 | { | |
ba380698 | 46 | name: "Boot PROM Filesystem", |
1da177e4 LT |
47 | } |
48 | }; | |
49 | ||
26eb1085 | 50 | static int __init init_sharpsl(void) |
1da177e4 LT |
51 | { |
52 | struct mtd_partition *parts; | |
53 | int nb_parts = 0; | |
54 | char *part_type = "static"; | |
55 | ||
69f34c98 | 56 | printk(KERN_NOTICE "Sharp SL series flash device: %x at %x\n", |
8f5a4486 | 57 | WINDOW_SIZE, WINDOW_ADDR); |
1da177e4 LT |
58 | sharpsl_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE); |
59 | if (!sharpsl_map.virt) { | |
60 | printk("Failed to ioremap\n"); | |
61 | return -EIO; | |
62 | } | |
ba380698 RP |
63 | |
64 | simple_map_init(&sharpsl_map); | |
65 | ||
1da177e4 LT |
66 | mymtd = do_map_probe("map_rom", &sharpsl_map); |
67 | if (!mymtd) { | |
68 | iounmap(sharpsl_map.virt); | |
69 | return -ENXIO; | |
70 | } | |
71 | ||
72 | mymtd->owner = THIS_MODULE; | |
73 | ||
69f34c98 | 74 | if (machine_is_corgi() || machine_is_shepherd() || machine_is_husky() |
8f5a4486 | 75 | || machine_is_poodle()) { |
ba380698 RP |
76 | sharpsl_partitions[0].size=0x006d0000; |
77 | sharpsl_partitions[0].offset=0x00120000; | |
78 | } else if (machine_is_tosa()) { | |
79 | sharpsl_partitions[0].size=0x006a0000; | |
80 | sharpsl_partitions[0].offset=0x00160000; | |
62052d42 | 81 | } else if (machine_is_spitz() || machine_is_akita() || machine_is_borzoi()) { |
ba380698 RP |
82 | sharpsl_partitions[0].size=0x006b0000; |
83 | sharpsl_partitions[0].offset=0x00140000; | |
8f5a4486 RP |
84 | } else { |
85 | map_destroy(mymtd); | |
69f34c98 | 86 | iounmap(sharpsl_map.virt); |
8f5a4486 RP |
87 | return -ENODEV; |
88 | } | |
69f34c98 | 89 | |
1da177e4 | 90 | parts = sharpsl_partitions; |
87d10f3c | 91 | nb_parts = ARRAY_SIZE(sharpsl_partitions); |
1da177e4 | 92 | |
8e2537e4 | 93 | printk(KERN_NOTICE "Using %s partition definition\n", part_type); |
1da177e4 LT |
94 | add_mtd_partitions(mymtd, parts, nb_parts); |
95 | ||
96 | return 0; | |
97 | } | |
98 | ||
99 | static void __exit cleanup_sharpsl(void) | |
100 | { | |
101 | if (mymtd) { | |
102 | del_mtd_partitions(mymtd); | |
103 | map_destroy(mymtd); | |
104 | } | |
105 | if (sharpsl_map.virt) { | |
106 | iounmap(sharpsl_map.virt); | |
107 | sharpsl_map.virt = 0; | |
108 | } | |
109 | } | |
110 | ||
111 | module_init(init_sharpsl); | |
112 | module_exit(cleanup_sharpsl); | |
113 | ||
114 | MODULE_LICENSE("GPL"); | |
115 | MODULE_AUTHOR("SHARP (Original: Arnold Christensen <AKC@pel.dk>)"); | |
116 | MODULE_DESCRIPTION("MTD map driver for SHARP SL series"); |