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
|
/*-
* Copyright (c) 2010-2012 Semihalf.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/disk.h>
#include <libgeom.h>
#include <dev/nand/nand_dev.h>
#include "nandtool.h"
int nand_erase(struct cmd_param *params)
{
struct chip_param_io chip_params;
char *dev;
int fd = -1, ret = 0;
off_t pos, count;
off_t start, nblocks, i;
int block_size, mult;
if (!(dev = param_get_string(params, "dev"))) {
fprintf(stderr, "Please supply valid 'dev' parameter.\n");
return (1);
}
if (param_has_value(params, "count"))
count = param_get_intx(params, "count");
else
count = 1;
if ((fd = g_open(dev, 1)) < 0) {
perrorf("Cannot open %s", dev);
return (1);
}
if (ioctl(fd, NAND_IO_GET_CHIP_PARAM, &chip_params) == -1) {
perrorf("Cannot ioctl(NAND_IO_GET_CHIP_PARAM)");
ret = 1;
goto out;
}
block_size = chip_params.page_size * chip_params.pages_per_block;
if (param_has_value(params, "page")) {
pos = chip_params.page_size * param_get_intx(params, "page");
mult = chip_params.page_size;
} else if (param_has_value(params, "block")) {
pos = block_size * param_get_intx(params, "block");
mult = block_size;
} else if (param_has_value(params, "pos")) {
pos = param_get_intx(params, "pos");
mult = 1;
} else {
/* Erase whole chip */
if (ioctl(fd, DIOCGMEDIASIZE, &count) == -1) {
ret = 1;
goto out;
}
pos = 0;
mult = 1;
}
if (pos % block_size) {
fprintf(stderr, "Position must be block-size aligned!\n");
ret = 1;
goto out;
}
count *= mult;
start = pos / block_size;
nblocks = count / block_size;
for (i = 0; i < nblocks; i++) {
if (g_delete(fd, (start + i) * block_size, block_size) == -1) {
perrorf("Cannot erase block %d - probably a bad block",
start + i);
ret = 1;
}
}
out:
g_close(fd);
return (ret);
}
|
