1/*-
2 * Copyright (c) 2010-2012 Semihalf.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: releng/11.0/usr.sbin/nandtool/nand_readoob.c 235537 2012-05-17 10:11:18Z gber $");
29
30#include <stdio.h>
31#include <stdlib.h>
32#include <unistd.h>
33#include <fcntl.h>
34#include <libgeom.h>
35#include <sys/types.h>
36#include <sys/disk.h>
37#include <dev/nand/nand_dev.h>
38#include "nandtool.h"
39
40int nand_read_oob(struct cmd_param *params)
41{
42	struct chip_param_io chip_params;
43	struct nand_oob_rw req;
44	char *dev, *out;
45	int fd = -1, fd_out = -1, ret = 0;
46	int page;
47	uint8_t *buf = NULL;
48
49	if ((page = param_get_int(params, "page")) < 0) {
50		fprintf(stderr, "You must supply valid 'page' argument.\n");
51		return (1);
52	}
53
54	if (!(dev = param_get_string(params, "dev"))) {
55		fprintf(stderr, "You must supply 'dev' argument.\n");
56		return (1);
57	}
58
59	if ((out = param_get_string(params, "out"))) {
60		if ((fd_out = open(out, O_WRONLY | O_CREAT)) == -1) {
61			perrorf("Cannot open %s", out);
62			ret = 1;
63			goto out;
64		}
65	}
66
67	if ((fd = g_open(dev, 1)) == -1) {
68		perrorf("Cannot open %s", dev);
69		ret = 1;
70		goto out;
71	}
72
73	if (ioctl(fd, NAND_IO_GET_CHIP_PARAM, &chip_params) == -1) {
74		perrorf("Cannot ioctl(NAND_IO_GET_CHIP_PARAM)");
75		ret = 1;
76		goto out;
77	}
78
79	buf = malloc(chip_params.oob_size);
80	if (buf == NULL) {
81		perrorf("Cannot allocate %d bytes\n", chip_params.oob_size);
82		ret = 1;
83		goto out;
84	}
85
86	req.page = page;
87	req.len = chip_params.oob_size;
88	req.data = buf;
89
90	if (ioctl(fd, NAND_IO_OOB_READ, &req) == -1) {
91		perrorf("Cannot read OOB from %s", dev);
92		ret = 1;
93		goto out;
94	}
95
96	if (fd_out != -1)
97		write(fd_out, buf, chip_params.oob_size);
98	else
99		hexdump(buf, chip_params.oob_size);
100
101out:
102	close(fd_out);
103
104	if (fd != -1)
105		g_close(fd);
106	if (buf)
107		free(buf);
108
109	return (ret);
110}
111
112