1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2010-2012 Semihalf.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD$");
31
32#include <stdio.h>
33#include <stdlib.h>
34#include <unistd.h>
35#include <fcntl.h>
36#include <libgeom.h>
37#include <sys/types.h>
38#include <sys/disk.h>
39#include <dev/nand/nand_dev.h>
40#include "nandtool.h"
41
42int nand_read_oob(struct cmd_param *params)
43{
44	struct chip_param_io chip_params;
45	struct nand_oob_rw req;
46	char *dev, *out;
47	int fd = -1, fd_out = -1, ret = 0;
48	int page;
49	uint8_t *buf = NULL;
50
51	if ((page = param_get_int(params, "page")) < 0) {
52		fprintf(stderr, "You must supply valid 'page' argument.\n");
53		return (1);
54	}
55
56	if (!(dev = param_get_string(params, "dev"))) {
57		fprintf(stderr, "You must supply 'dev' argument.\n");
58		return (1);
59	}
60
61	if ((out = param_get_string(params, "out"))) {
62		if ((fd_out = open(out, O_WRONLY | O_CREAT, 0666)) == -1) {
63			perrorf("Cannot open %s", out);
64			ret = 1;
65			goto out;
66		}
67	}
68
69	if ((fd = g_open(dev, 1)) == -1) {
70		perrorf("Cannot open %s", dev);
71		ret = 1;
72		goto out;
73	}
74
75	if (ioctl(fd, NAND_IO_GET_CHIP_PARAM, &chip_params) == -1) {
76		perrorf("Cannot ioctl(NAND_IO_GET_CHIP_PARAM)");
77		ret = 1;
78		goto out;
79	}
80
81	buf = malloc(chip_params.oob_size);
82	if (buf == NULL) {
83		perrorf("Cannot allocate %d bytes\n", chip_params.oob_size);
84		ret = 1;
85		goto out;
86	}
87
88	req.page = page;
89	req.len = chip_params.oob_size;
90	req.data = buf;
91
92	if (ioctl(fd, NAND_IO_OOB_READ, &req) == -1) {
93		perrorf("Cannot read OOB from %s", dev);
94		ret = 1;
95		goto out;
96	}
97
98	if (fd_out != -1)
99		write(fd_out, buf, chip_params.oob_size);
100	else
101		hexdump(buf, chip_params.oob_size);
102
103out:
104	close(fd_out);
105
106	if (fd != -1)
107		g_close(fd);
108	if (buf)
109		free(buf);
110
111	return (ret);
112}
113
114