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Diffstat (limited to 'misc-utils/flash_otp_dump.c')
-rw-r--r--misc-utils/flash_otp_dump.c56
1 files changed, 56 insertions, 0 deletions
diff --git a/misc-utils/flash_otp_dump.c b/misc-utils/flash_otp_dump.c
new file mode 100644
index 0000000..f0c0fb9
--- /dev/null
+++ b/misc-utils/flash_otp_dump.c
@@ -0,0 +1,56 @@
+/*
+ * flash_otp_dump.c -- display One-Time-Programm data
+ */
+
+#define PROGRAM_NAME "flash_otp_dump"
+
+#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, offset, ret;
+ unsigned char buf[16];
+
+ 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;
+ }
+
+ printf("OTP %s data for %s\n",
+ argv[1][1] == 'f' ? "factory" : "user", argv[2]);
+ offset = 0;
+ while ((ret = read(fd, buf, sizeof(buf)))) {
+ if (ret < 0) {
+ perror("read()");
+ return errno;
+ }
+ printf("0x%04x:", offset);
+ for (i = 0; i < ret; i++)
+ printf(" %02x", buf[i]);
+ printf("\n");
+ offset += ret;
+ }
+
+ close(fd);
+ return 0;
+}