From 7d81790ced345585b1e647ca9d0f6678e7062fa4 Mon Sep 17 00:00:00 2001
From: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Date: Sat, 31 Oct 2015 11:12:01 +0800
Subject: mtd-utils: Restructure the mtd-utils source.

* There is no code modification in this commit, only moving
* the files to proper place.

The user tools looks a little messy as we place almost
the all tools in the root directory of mtd-utils. To make
it more clear, I propose to introduce the following structure
for our source code.

mtd-utils/
	|-- lib
	|-- include
	|-- misc-utils
	|-- jffsX-utils
	|-- nand-utils
	|-- nor-utils
	|-- ubi-utils
	|-- ubifs-utils
	`-- tests

Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
---
 misc-utils/flash_otp_lock.c | 72 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 misc-utils/flash_otp_lock.c

(limited to 'misc-utils/flash_otp_lock.c')

diff --git a/misc-utils/flash_otp_lock.c b/misc-utils/flash_otp_lock.c
new file mode 100644
index 0000000..3c39a2d
--- /dev/null
+++ b/misc-utils/flash_otp_lock.c
@@ -0,0 +1,72 @@
+/*
+ * flash_otp_lock.c -- lock area of One-Time-Program data
+ */
+
+#define PROGRAM_NAME "flash_otp_lock"
+
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+
+#include <mtd/mtd-user.h>
+#include "common.h"
+
+int main(int argc,char *argv[])
+{
+	int fd, val, ret, offset, size;
+	char *p;
+
+	if (argc != 5 || strcmp(argv[1], "-u")) {
+		fprintf(stderr, "Usage: %s -u <device> <offset> <size>\n", PROGRAM_NAME);
+		fprintf(stderr, "offset and size must match on OTP region boundaries\n");
+		fprintf(stderr, "CAUTION! ONCE LOCKED, OTP REGIONS CAN'T BE UNLOCKED!\n");
+		return EINVAL;
+	}
+
+	fd = open(argv[2], O_WRONLY);
+	if (fd < 0) {
+		perror(argv[2]);
+		return errno;
+	}
+
+	val = MTD_OTP_USER;
+	ret = ioctl(fd, OTPSELECT, &val);
+	if (ret < 0) {
+		perror("OTPSELECT");
+		return errno;
+	}
+
+	offset = strtoul(argv[3], &p, 0);
+	if (argv[3][0] == 0 || *p != 0) {
+		fprintf(stderr, "%s: bad offset value\n", PROGRAM_NAME);
+		return ERANGE;
+	}
+
+	size = strtoul(argv[4], &p, 0);
+	if (argv[4][0] == 0 || *p != 0) {
+		fprintf(stderr, "%s: bad size value\n", PROGRAM_NAME);
+		return ERANGE;
+	}
+
+	printf("About to lock OTP user data on %s from 0x%x to 0x%x\n",
+			argv[2], offset, offset + size);
+	if (prompt("Are you sure?", false)) {
+		struct otp_info info;
+		info.start = offset;
+		info.length = size;
+		ret = ioctl(fd, OTPLOCK, &info);
+		if (ret	< 0) {
+			perror("OTPLOCK");
+			return errno;
+		}
+		printf("Done.\n");
+	} else {
+		printf("Aborted\n");
+	}
+
+	return 0;
+}
-- 
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