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/*
* flash_otp_info.c -- print info about One-Time-Programm data
*/
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <mtd/mtd-user.h>
int main(int argc,char *argv[])
{
int fd, val, i, ret;
if (argc != 3 || (strcmp(argv[1], "-f") && strcmp(argv[1], "-u"))) {
fprintf(stderr,"Usage: %s [ -f | -u ] <device>\n", argv[0]);
return EINVAL;
}
fd = open(argv[2], O_RDONLY);
if (fd < 0) {
perror(argv[2]);
return errno;
}
val = argv[1][1] == 'f' ? MTD_OTP_FACTORY : MTD_OTP_USER;
ret = ioctl(fd, OTPSELECT, &val);
if (ret < 0) {
perror("OTPSELECT");
return errno;
}
ret = ioctl(fd, OTPGETREGIONCOUNT, &val);
if (ret < 0) {
perror("OTPGETREGIONCOUNT");
return errno;
}
printf("Number of OTP %s blocks on %s: %d\n",
argv[1][1] == 'f' ? "factory" : "user", argv[2], val);
if (val > 0) {
struct otp_info info[val];
ret = ioctl(fd, OTPGETREGIONINFO, &info);
if (ret < 0) {
perror("OTPGETREGIONCOUNT");
return errno;
}
for (i = 0; i < val; i++)
printf("block %2d: offset = 0x%04x "
"size = %2d bytes %s\n",
i, info[i].start, info[i].length,
info[i].locked ? "[locked]" : "[unlocked]");
}
close(fd);
return 0;
}
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