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
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
/*
* pnc2000.c - mapper for Photron PNC-2000 board.
*
* Copyright (C) 2000 Crossnet Co. <info@crossnet.co.jp>
*
* This code is GPL
*
* $Id: pnc2000.c,v 1.10 2001/10/02 15:05:14 dwmw2 Exp $
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>
#define WINDOW_ADDR 0xbf000000
#define WINDOW_SIZE 0x00400000
/*
* MAP DRIVER STUFF
*/
__u8 pnc_read8(struct map_info *map, unsigned long ofs)
{
return *(__u8 *)(WINDOW_ADDR + ofs);
}
__u16 pnc_read16(struct map_info *map, unsigned long ofs)
{
return *(__u16 *)(WINDOW_ADDR + ofs);
}
__u32 pnc_read32(struct map_info *map, unsigned long ofs)
{
return *(volatile unsigned int *)(WINDOW_ADDR + ofs);
}
void pnc_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
{
memcpy(to, (void *)(WINDOW_ADDR + from), len);
}
void pnc_write8(struct map_info *map, __u8 d, unsigned long adr)
{
*(__u8 *)(WINDOW_ADDR + adr) = d;
}
void pnc_write16(struct map_info *map, __u16 d, unsigned long adr)
{
*(__u16 *)(WINDOW_ADDR + adr) = d;
}
void pnc_write32(struct map_info *map, __u32 d, unsigned long adr)
{
*(__u32 *)(WINDOW_ADDR + adr) = d;
}
void pnc_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
{
memcpy((void *)(WINDOW_ADDR + to), from, len);
}
struct map_info pnc_map = {
name: "PNC-2000",
size: WINDOW_SIZE,
buswidth: 4,
read8: pnc_read8,
read16: pnc_read16,
read32: pnc_read32,
copy_from: pnc_copy_from,
write8: pnc_write8,
write16: pnc_write16,
write32: pnc_write32,
copy_to: pnc_copy_to
};
/*
* MTD 'PARTITIONING' STUFF
*/
static struct mtd_partition pnc_partitions[3] = {
{
name: "PNC-2000 boot firmware",
size: 0x20000,
offset: 0
},
{
name: "PNC-2000 kernel",
size: 0x1a0000,
offset: 0x20000
},
{
name: "PNC-2000 filesystem",
size: 0x240000,
offset: 0x1c0000
}
};
/*
* This is the master MTD device for which all the others are just
* auto-relocating aliases.
*/
static struct mtd_info *mymtd;
int __init init_pnc2000(void)
{
printk(KERN_NOTICE "Photron PNC-2000 flash mapping: %x at %x\n", WINDOW_SIZE, WINDOW_ADDR);
mymtd = do_map_probe("cfi_probe", &pnc_map);
if (mymtd) {
mymtd->module = THIS_MODULE;
return add_mtd_partitions(mymtd, pnc_partitions, 3);
}
return -ENXIO;
}
static void __exit cleanup_pnc2000(void)
{
if (mymtd) {
del_mtd_partitions(mymtd);
map_destroy(mymtd);
}
}
module_init(init_pnc2000);
module_exit(cleanup_pnc2000);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Crossnet Co. <info@crossnet.co.jp>");
MODULE_DESCRIPTION("MTD map driver for Photron PNC-2000 board");
|
