]>
Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
69f34c98 | 2 | * $Id: mbx860.c,v 1.9 2005/11/07 11:14:27 gleixner Exp $ |
1da177e4 LT |
3 | * |
4 | * Handle mapping of the flash on MBX860 boards | |
5 | * | |
6 | * Author: Anton Todorov | |
7 | * Copyright: (C) 2001 Emness Technology | |
69f34c98 | 8 | * |
1da177e4 LT |
9 | * This program is free software; you can redistribute it and/or modify |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | * | |
13 | */ | |
14 | ||
15 | #include <linux/module.h> | |
16 | #include <linux/types.h> | |
17 | #include <linux/kernel.h> | |
18 | #include <linux/init.h> | |
19 | #include <asm/io.h> | |
20 | #include <linux/mtd/mtd.h> | |
21 | #include <linux/mtd/map.h> | |
22 | #include <linux/mtd/partitions.h> | |
23 | ||
24 | ||
25 | #define WINDOW_ADDR 0xfe000000 | |
26 | #define WINDOW_SIZE 0x00200000 | |
27 | ||
28 | /* Flash / Partition sizing */ | |
29 | #define MAX_SIZE_KiB 8192 | |
30 | #define BOOT_PARTITION_SIZE_KiB 512 | |
31 | #define KERNEL_PARTITION_SIZE_KiB 5632 | |
32 | #define APP_PARTITION_SIZE_KiB 2048 | |
33 | ||
34 | #define NUM_PARTITIONS 3 | |
35 | ||
36 | /* partition_info gives details on the logical partitions that the split the | |
37 | * single flash device into. If the size if zero we use up to the end of the | |
38 | * device. */ | |
39 | static struct mtd_partition partition_info[]={ | |
40 | { .name = "MBX flash BOOT partition", | |
41 | .offset = 0, | |
42 | .size = BOOT_PARTITION_SIZE_KiB*1024 }, | |
43 | { .name = "MBX flash DATA partition", | |
44 | .offset = BOOT_PARTITION_SIZE_KiB*1024, | |
45 | .size = (KERNEL_PARTITION_SIZE_KiB)*1024 }, | |
46 | { .name = "MBX flash APPLICATION partition", | |
47 | .offset = (BOOT_PARTITION_SIZE_KiB+KERNEL_PARTITION_SIZE_KiB)*1024 } | |
48 | }; | |
69f34c98 | 49 | |
1da177e4 LT |
50 | |
51 | static struct mtd_info *mymtd; | |
52 | ||
53 | struct map_info mbx_map = { | |
54 | .name = "MBX flash", | |
55 | .size = WINDOW_SIZE, | |
56 | .phys = WINDOW_ADDR, | |
57 | .bankwidth = 4, | |
58 | }; | |
59 | ||
60 | int __init init_mbx(void) | |
61 | { | |
62 | printk(KERN_NOTICE "Motorola MBX flash device: 0x%x at 0x%x\n", WINDOW_SIZE*4, WINDOW_ADDR); | |
63 | mbx_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE * 4); | |
64 | ||
65 | if (!mbx_map.virt) { | |
66 | printk("Failed to ioremap\n"); | |
67 | return -EIO; | |
68 | } | |
69 | simple_map_init(&mbx_map); | |
70 | ||
71 | mymtd = do_map_probe("jedec_probe", &mbx_map); | |
72 | if (mymtd) { | |
73 | mymtd->owner = THIS_MODULE; | |
74 | add_mtd_device(mymtd); | |
75 | add_mtd_partitions(mymtd, partition_info, NUM_PARTITIONS); | |
76 | return 0; | |
77 | } | |
78 | ||
79 | iounmap((void *)mbx_map.virt); | |
80 | return -ENXIO; | |
81 | } | |
82 | ||
83 | static void __exit cleanup_mbx(void) | |
84 | { | |
85 | if (mymtd) { | |
86 | del_mtd_device(mymtd); | |
87 | map_destroy(mymtd); | |
88 | } | |
89 | if (mbx_map.virt) { | |
90 | iounmap((void *)mbx_map.virt); | |
91 | mbx_map.virt = 0; | |
92 | } | |
93 | } | |
94 | ||
95 | module_init(init_mbx); | |
96 | module_exit(cleanup_mbx); | |
97 | ||
98 | MODULE_AUTHOR("Anton Todorov <a.todorov@emness.com>"); | |
99 | MODULE_DESCRIPTION("MTD map driver for Motorola MBX860 board"); | |
100 | MODULE_LICENSE("GPL"); |