1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
/*
* Flash memory access on 4G Systems MTX-1 boards
*
* $Id: mtx-1_flash.c,v 1.1 2005/09/18 10:46:41 joern Exp $
*
* (C) 2005 Bruno Randolf <bruno.randolf@4g-systems.biz>
* (C) 2005 Jörn Engel <joern@wohnheim.fh-wedel.de>
*
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>
#include <asm/io.h>
static struct map_info mtx1_map = {
.name = "MTX-1 flash",
.bankwidth = 4,
.size = 0x2000000,
.phys = 0x1E000000,
};
static struct mtd_partition mtx1_partitions[] = {
{
.name = "filesystem",
.size = 0x01C00000,
.offset = 0,
},{
.name = "yamon",
.size = 0x00100000,
.offset = MTDPART_OFS_APPEND,
.mask_flags = MTD_WRITEABLE,
},{
.name = "kernel",
.size = 0x002c0000,
.offset = MTDPART_OFS_APPEND,
},{
.name = "yamon env",
.size = 0x00040000,
.offset = MTDPART_OFS_APPEND,
}
};
static struct mtd_info *mtx1_mtd;
int __init mtx1_mtd_init(void)
{
int ret = -ENXIO;
simple_map_init(&mtx1_map);
mtx1_map.virt = ioremap(mtx1_map.phys, mtx1_map.size);
if (!mtx1_map.virt)
return -EIO;
mtx1_mtd = do_map_probe("cfi_probe", &mtx1_map);
if (!mtx1_mtd)
goto err;
mtx1_mtd->owner = THIS_MODULE;
ret = add_mtd_partitions(mtx1_mtd, mtx1_partitions,
ARRAY_SIZE(mtx1_partitions));
if (ret)
goto err;
return 0;
err:
iounmap(mtx1_map.virt);
return ret;
}
static void __exit mtx1_mtd_cleanup(void)
{
if (mtx1_mtd) {
del_mtd_partitions(mtx1_mtd);
map_destroy(mtx1_mtd);
}
if (mtx1_map.virt)
iounmap(mtx1_map.virt);
}
module_init(mtx1_mtd_init);
module_exit(mtx1_mtd_cleanup);
MODULE_AUTHOR("Bruno Randolf <bruno.randolf@4g-systems.biz>");
MODULE_DESCRIPTION("MTX-1 flash map");
MODULE_LICENSE("GPL");
|
