2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2010-2012 Semihalf.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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
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25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
38 #include <dev/nand/nand_dev.h>
41 int nand_read(struct cmd_param *params)
43 struct chip_param_io chip_params;
44 int fd = -1, out_fd = -1, done = 0, ret = 0;
46 int pos, count, mult, block_size;
49 if (!(dev = param_get_string(params, "dev"))) {
50 fprintf(stderr, "You must specify 'dev' parameter\n");
54 if ((out = param_get_string(params, "out"))) {
55 out_fd = open(out, O_WRONLY|O_CREAT, 0666);
57 perrorf("Cannot open %s for writing", out);
62 if ((fd = g_open(dev, 1)) == -1) {
63 perrorf("Cannot open %s", dev);
68 if (ioctl(fd, NAND_IO_GET_CHIP_PARAM, &chip_params) == -1) {
69 perrorf("Cannot ioctl(NAND_IO_GET_CHIP_PARAM)");
74 block_size = chip_params.page_size * chip_params.pages_per_block;
76 if (param_has_value(params, "page")) {
77 pos = chip_params.page_size * param_get_int(params, "page");
78 mult = chip_params.page_size;
79 } else if (param_has_value(params, "block")) {
80 pos = block_size * param_get_int(params, "block");
82 } else if (param_has_value(params, "pos")) {
83 pos = param_get_int(params, "pos");
85 if (pos % chip_params.page_size) {
86 fprintf(stderr, "Position must be page-size aligned!\n");
91 fprintf(stderr, "You must specify one of: 'block', 'page',"
97 if (!(param_has_value(params, "count")))
100 count = param_get_int(params, "count") * mult;
102 if (!(buf = malloc(chip_params.page_size))) {
103 perrorf("Cannot allocate buffer [size %x]",
104 chip_params.page_size);
109 lseek(fd, pos, SEEK_SET);
111 while (done < count) {
112 if ((ret = read(fd, buf, chip_params.page_size)) !=
113 (int32_t)chip_params.page_size) {
114 perrorf("read error (read %d bytes)", ret);
120 if ((ret = write(out_fd, buf, chip_params.page_size)) !=
121 (int32_t)chip_params.page_size) {
122 perrorf("write error (written %d bytes)", ret);
127 hexdumpoffset(buf, chip_params.page_size, done);