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