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
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
|
#define _GNU_SOURCE
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <getopt.h>
#include <asm/types.h>
#include "mtd/mtd-user.h"
void usage(void)
{
fprintf(stderr, "usage: nandtest [OPTIONS] <device>\n\n"
" -h, --help Display this help output\n"
" -m, --markbad Mark blocks bad if they appear so\n"
" -s, --seed Supply random seed\n"
" -p, --passes Number of passes\n"
" -o, --offset Start offset on flash\n"
" -l, --length Length of flash to test\n"
" -k, --keep Restore existing contents after test\n");
exit(1);
}
struct mtd_info_user meminfo;
struct mtd_ecc_stats oldstats, newstats;
int fd;
int markbad=0;
int seed;
int erase_and_write(loff_t ofs, unsigned char *data, unsigned char *rbuf)
{
struct erase_info_user er;
ssize_t len;
int i;
printf("\r%08x: erasing... ", (unsigned)ofs);
fflush(stdout);
er.start = ofs;
er.length = meminfo.erasesize;
if (ioctl(fd, MEMERASE, &er)) {
perror("MEMERASE");
if (markbad) {
printf("Mark block bad at %08lx\n", (long)ofs);
ioctl(fd, MEMSETBADBLOCK, &ofs);
}
return 1;
}
printf("\r%08x: writing...", (unsigned)ofs);
fflush(stdout);
len = pwrite(fd, data, meminfo.erasesize, ofs);
if (len < 0) {
printf("\n");
perror("write");
if (markbad) {
printf("Mark block bad at %08lx\n", (long)ofs);
ioctl(fd, MEMSETBADBLOCK, &ofs);
}
return 1;
}
if (len < meminfo.erasesize) {
printf("\n");
fprintf(stderr, "Short write (%zd bytes)\n", len);
exit(1);
}
printf("\r%08x: reading...", (unsigned)ofs);
fflush(stdout);
len = pread(fd, rbuf, meminfo.erasesize, ofs);
if (len < meminfo.erasesize) {
printf("\n");
if (len)
fprintf(stderr, "Short read (%zd bytes)\n", len);
else
perror("read");
exit(1);
}
if (ioctl(fd, ECCGETSTATS, &newstats)) {
printf("\n");
perror("ECCGETSTATS");
close(fd);
exit(1);
}
if (newstats.corrected > oldstats.corrected) {
printf("\nECC corrected at %08x\n", (unsigned) ofs);
oldstats.corrected = newstats.corrected;
}
if (newstats.failed > oldstats.failed) {
printf("\nECC failed at %08x\n", (unsigned) ofs);
oldstats.corrected = newstats.corrected;
}
if (len < meminfo.erasesize)
exit(1);
printf("\r%08x: checking...", (unsigned)ofs);
fflush(stdout);
if (memcmp(data, rbuf, meminfo.erasesize)) {
printf("\n");
fprintf(stderr, "compare failed. seed %d\n", seed);
for (i=0; i<meminfo.erasesize; i++) {
if (data[i] != rbuf[i])
printf("Byte 0x%x is %02x should be %02x\n",
i, rbuf[i], data[i]);
}
exit(1);
}
return 0;
}
/*
* Main program
*/
int main(int argc, char **argv)
{
int i;
unsigned char *wbuf, *rbuf, *kbuf;
int pass;
int nr_passes = 1;
int keep_contents = 0;
uint32_t offset = 0;
uint32_t length = -1;
for (;;) {
static const char *short_options="hkl:mo:p:s:";
static const struct option long_options[] = {
{ "help", no_argument, 0, 'h' },
{ "markbad", no_argument, 0, 'm' },
{ "seed", required_argument, 0, 's' },
{ "passes", required_argument, 0, 'p' },
{ "offset", required_argument, 0, 'o' },
{ "length", required_argument, 0, 'l' },
{ "keep", no_argument, 0, 'k' },
{0, 0, 0, 0},
};
int option_index = 0;
int c = getopt_long(argc, argv, short_options, long_options, &option_index);
if (c == EOF)
break;
switch (c) {
case 'h':
case '?':
usage();
break;
case 'm':
markbad = 1;
break;
case 'k':
keep_contents = 1;
break;
case 's':
seed = atol(optarg);
break;
case 'p':
nr_passes = atol(optarg);
break;
case 'o':
offset = atol(optarg);
break;
case 'l':
length = strtol(optarg, NULL, 0);
break;
}
}
if (argc - optind != 1)
usage();
fd = open(argv[optind], O_RDWR);
if (fd < 0) {
perror("open");
exit(1);
}
if (ioctl(fd, MEMGETINFO, &meminfo)) {
perror("MEMGETINFO");
close(fd);
exit(1);
}
if (length == -1)
length = meminfo.size;
if (offset % meminfo.erasesize) {
fprintf(stderr, "Offset %x not multiple of erase size %x\n",
offset, meminfo.erasesize);
exit(1);
}
if (length % meminfo.erasesize) {
fprintf(stderr, "Length %x not multiple of erase size %x\n",
length, meminfo.erasesize);
exit(1);
}
if (length + offset > meminfo.size) {
fprintf(stderr, "Length %x + offset %x exceeds device size %x\n",
length, offset, meminfo.size);
exit(1);
}
wbuf = malloc(meminfo.erasesize * 3);
if (!wbuf) {
fprintf(stderr, "Could not allocate %d bytes for buffer\n",
meminfo.erasesize * 2);
exit(1);
}
rbuf = wbuf + meminfo.erasesize;
kbuf = rbuf + meminfo.erasesize;
if (ioctl(fd, ECCGETSTATS, &oldstats)) {
perror("ECCGETSTATS");
close(fd);
exit(1);
}
printf("ECC corrections: %d\n", oldstats.corrected);
printf("ECC failures : %d\n", oldstats.failed);
printf("Bad blocks : %d\n", oldstats.badblocks);
printf("BBT blocks : %d\n", oldstats.bbtblocks);
for (pass = 0; pass < nr_passes; pass++) {
loff_t test_ofs;
for (test_ofs = offset; test_ofs < offset+length; test_ofs += meminfo.erasesize) {
ssize_t len;
seed = rand();
srand(seed);
if (ioctl(fd, MEMGETBADBLOCK, &test_ofs)) {
printf("\rBad block at 0x%08x\n", (unsigned)test_ofs);
continue;
}
for (i=0; i<meminfo.erasesize; i++)
wbuf[i] = rand();
if (keep_contents) {
printf("\r%08x: reading... ", (unsigned)test_ofs);
fflush(stdout);
len = pread(fd, kbuf, meminfo.erasesize, test_ofs);
if (len < meminfo.erasesize) {
printf("\n");
if (len)
fprintf(stderr, "Short read (%zd bytes)\n", len);
else
perror("read");
exit(1);
}
}
if (erase_and_write(test_ofs, wbuf, rbuf))
continue;
if (keep_contents)
erase_and_write(test_ofs, kbuf, rbuf);
}
printf("\nFinished pass %d successfully\n", pass+1);
}
/* Return happy */
return 0;
}
|