From 72212c137c574b564723327af751c4054c7cfca6 Mon Sep 17 00:00:00 2001
From: David Woodhouse <dwmw2@shinybook.infradead.org>
Date: Tue, 11 Apr 2006 19:09:16 -0400
Subject: Initial commit

---
 flash_otp_dump.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 flash_otp_dump.c

(limited to 'flash_otp_dump.c')

diff --git a/flash_otp_dump.c b/flash_otp_dump.c
new file mode 100644
index 0000000..b930ca4
--- /dev/null
+++ b/flash_otp_dump.c
@@ -0,0 +1,54 @@
+/*
+ * flash_otp_dump.c -- display 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, 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", 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;
+	}
+
+	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;
+}
-- 
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