/*
 * Copyright (c) 2000 - 2017 Samsung Electronics Co., Ltd.
 *
 * Contact: MyoungJune Park <mj2004.park@samsung.com>
 *   Created by Wonil Choi <wonil22.choi@samsung.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

#include <stdio.h>
#include <stdint.h>
#include <fcntl.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include <errno.h>

#include "ccerror.h"

#define PARAM_CC_ENC_RAW_SIZE	64
#define PARAM_CC_FLAG_OFFSET	0x800

static const char dev_params[]  = {
	"/dev/disk/by-partlabel/param"
};

int resetSBFCCM(void)
{
	int ret, fd;
	uint8_t eraw[PARAM_CC_ENC_RAW_SIZE];

	memset(eraw, 0, PARAM_CC_ENC_RAW_SIZE);
	if ((fd = open(dev_params, O_WRONLY)) == -1) {
		ret = -CC_ERROR_UTIL_RESETSBFCCM;
		goto open_fail;
	}

	if (lseek(fd, -(PARAM_CC_FLAG_OFFSET), SEEK_END) == -1) {
		ret = -(CC_ERROR_UTIL_RESETSBFCCM + 2);
		goto out;
	}

	if (write(fd, eraw, PARAM_CC_ENC_RAW_SIZE) != PARAM_CC_ENC_RAW_SIZE) {
		ret = -(CC_ERROR_UTIL_RESETSBFCCM + 3);
		goto out;
	}

	ret = CC_ERROR_NONE;
out:
	close(fd);
open_fail:
	return ret;
}

int main(void)
{
	int ret = resetSBFCCM();
	printf("resetSBFCCM() returns %d\n", ret);
	return ret;
}