66 lines
1.3 KiB
C
66 lines
1.3 KiB
C
|
/*
|
||
|
|
* flash_otp_info.c -- print info about One-Time-Programm data
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define PROGRAM_NAME "flash_otp_info"
|
||
|
|
|
||
|
|
#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", PROGRAM_NAME);
|
||
|
|
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;
|
||
|
|
}
|