285 lines
6.0 KiB
C
Executable File
285 lines
6.0 KiB
C
Executable File
#define PROGRAM_NAME "nandtest"
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#define _GNU_SOURCE
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <getopt.h>
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#include <asm/types.h>
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#include "mtd/mtd-user.h"
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void usage(void)
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{
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fprintf(stderr, "usage: %s [OPTIONS] <device>\n\n"
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" -h, --help Display this help output\n"
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" -m, --markbad Mark blocks bad if they appear so\n"
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" -s, --seed Supply random seed\n"
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" -p, --passes Number of passes\n"
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" -o, --offset Start offset on flash\n"
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" -l, --length Length of flash to test\n"
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" -k, --keep Restore existing contents after test\n",
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PROGRAM_NAME);
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exit(1);
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}
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struct mtd_info_user meminfo;
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struct mtd_ecc_stats oldstats, newstats;
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int fd;
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int markbad=0;
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int seed;
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int erase_and_write(loff_t ofs, unsigned char *data, unsigned char *rbuf)
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{
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struct erase_info_user er;
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ssize_t len;
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int i;
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printf("\r%08x: erasing... ", (unsigned)ofs);
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fflush(stdout);
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er.start = ofs;
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er.length = meminfo.erasesize;
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if (ioctl(fd, MEMERASE, &er)) {
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perror("MEMERASE");
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if (markbad) {
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printf("Mark block bad at %08lx\n", (long)ofs);
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ioctl(fd, MEMSETBADBLOCK, &ofs);
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}
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return 1;
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}
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printf("\r%08x: writing...", (unsigned)ofs);
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fflush(stdout);
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len = pwrite(fd, data, meminfo.erasesize, ofs);
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if (len < 0) {
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printf("\n");
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perror("write");
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if (markbad) {
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printf("Mark block bad at %08lx\n", (long)ofs);
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ioctl(fd, MEMSETBADBLOCK, &ofs);
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}
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return 1;
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}
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if (len < meminfo.erasesize) {
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printf("\n");
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fprintf(stderr, "Short write (%zd bytes)\n", len);
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exit(1);
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}
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printf("\r%08x: reading...", (unsigned)ofs);
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fflush(stdout);
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len = pread(fd, rbuf, meminfo.erasesize, ofs);
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if (len < meminfo.erasesize) {
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printf("\n");
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if (len)
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fprintf(stderr, "Short read (%zd bytes)\n", len);
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else
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perror("read");
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exit(1);
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}
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if (ioctl(fd, ECCGETSTATS, &newstats)) {
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printf("\n");
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perror("ECCGETSTATS");
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close(fd);
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exit(1);
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}
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if (newstats.corrected > oldstats.corrected) {
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printf("\nECC corrected at %08x\n", (unsigned) ofs);
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oldstats.corrected = newstats.corrected;
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}
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if (newstats.failed > oldstats.failed) {
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printf("\nECC failed at %08x\n", (unsigned) ofs);
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oldstats.corrected = newstats.corrected;
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}
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if (len < meminfo.erasesize)
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exit(1);
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printf("\r%08x: checking...", (unsigned)ofs);
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fflush(stdout);
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if (memcmp(data, rbuf, meminfo.erasesize)) {
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printf("\n");
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fprintf(stderr, "compare failed. seed %d\n", seed);
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for (i=0; i<meminfo.erasesize; i++) {
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if (data[i] != rbuf[i])
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printf("Byte 0x%x is %02x should be %02x\n",
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i, rbuf[i], data[i]);
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}
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exit(1);
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}
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return 0;
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}
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/*
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* Main program
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*/
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int main(int argc, char **argv)
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{
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int i;
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unsigned char *wbuf, *rbuf, *kbuf;
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int pass;
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int nr_passes = 1;
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int keep_contents = 0;
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uint32_t offset = 0;
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uint32_t length = -1;
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for (;;) {
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static const char *short_options="hkl:mo:p:s:";
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static const struct option long_options[] = {
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{ "help", no_argument, 0, 'h' },
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{ "markbad", no_argument, 0, 'm' },
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{ "seed", required_argument, 0, 's' },
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{ "passes", required_argument, 0, 'p' },
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{ "offset", required_argument, 0, 'o' },
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{ "length", required_argument, 0, 'l' },
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{ "keep", no_argument, 0, 'k' },
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{0, 0, 0, 0},
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};
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int option_index = 0;
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int c = getopt_long(argc, argv, short_options, long_options, &option_index);
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if (c == EOF)
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break;
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switch (c) {
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case 'h':
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case '?':
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usage();
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break;
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case 'm':
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markbad = 1;
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break;
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case 'k':
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keep_contents = 1;
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break;
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case 's':
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seed = atol(optarg);
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break;
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case 'p':
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nr_passes = atol(optarg);
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break;
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case 'o':
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offset = atol(optarg);
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break;
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case 'l':
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length = strtol(optarg, NULL, 0);
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break;
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}
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}
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if (argc - optind != 1)
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usage();
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fd = open(argv[optind], O_RDWR);
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if (fd < 0) {
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perror("open");
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exit(1);
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}
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if (ioctl(fd, MEMGETINFO, &meminfo)) {
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perror("MEMGETINFO");
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close(fd);
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exit(1);
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}
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if (length == -1)
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length = meminfo.size;
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if (offset % meminfo.erasesize) {
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fprintf(stderr, "Offset %x not multiple of erase size %x\n",
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offset, meminfo.erasesize);
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exit(1);
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}
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if (length % meminfo.erasesize) {
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fprintf(stderr, "Length %x not multiple of erase size %x\n",
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length, meminfo.erasesize);
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exit(1);
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}
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if (length + offset > meminfo.size) {
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fprintf(stderr, "Length %x + offset %x exceeds device size %x\n",
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length, offset, meminfo.size);
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exit(1);
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}
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wbuf = malloc(meminfo.erasesize * 3);
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if (!wbuf) {
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fprintf(stderr, "Could not allocate %d bytes for buffer\n",
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meminfo.erasesize * 2);
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exit(1);
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}
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rbuf = wbuf + meminfo.erasesize;
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kbuf = rbuf + meminfo.erasesize;
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if (ioctl(fd, ECCGETSTATS, &oldstats)) {
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perror("ECCGETSTATS");
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close(fd);
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exit(1);
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}
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printf("ECC corrections: %d\n", oldstats.corrected);
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printf("ECC failures : %d\n", oldstats.failed);
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printf("Bad blocks : %d\n", oldstats.badblocks);
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printf("BBT blocks : %d\n", oldstats.bbtblocks);
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for (pass = 0; pass < nr_passes; pass++) {
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loff_t test_ofs;
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for (test_ofs = offset; test_ofs < offset+length; test_ofs += meminfo.erasesize) {
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ssize_t len;
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seed = rand();
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srand(seed);
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if (ioctl(fd, MEMGETBADBLOCK, &test_ofs)) {
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printf("\rBad block at 0x%08x\n", (unsigned)test_ofs);
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continue;
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}
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for (i=0; i<meminfo.erasesize; i++)
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wbuf[i] = rand();
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if (keep_contents) {
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printf("\r%08x: reading... ", (unsigned)test_ofs);
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fflush(stdout);
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len = pread(fd, kbuf, meminfo.erasesize, test_ofs);
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if (len < meminfo.erasesize) {
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printf("\n");
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if (len)
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fprintf(stderr, "Short read (%zd bytes)\n", len);
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else
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perror("read");
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exit(1);
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}
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}
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if (erase_and_write(test_ofs, wbuf, rbuf))
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continue;
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if (keep_contents)
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erase_and_write(test_ofs, kbuf, rbuf);
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}
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printf("\nFinished pass %d successfully\n", pass+1);
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}
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/* Return happy */
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return 0;
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}
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