2 * Copyright (c) 2010-2012 Semihalf.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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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
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27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
33 #include <sys/types.h>
36 #include <dev/nand/nand_dev.h>
39 int nand_erase(struct cmd_param *params)
41 struct chip_param_io chip_params;
45 off_t start, nblocks, i;
48 if (!(dev = param_get_string(params, "dev"))) {
49 fprintf(stderr, "Please supply valid 'dev' parameter.\n");
53 if (param_has_value(params, "count"))
54 count = param_get_intx(params, "count");
58 if ((fd = g_open(dev, 1)) < 0) {
59 perrorf("Cannot open %s", dev);
63 if (ioctl(fd, NAND_IO_GET_CHIP_PARAM, &chip_params) == -1) {
64 perrorf("Cannot ioctl(NAND_IO_GET_CHIP_PARAM)");
69 block_size = chip_params.page_size * chip_params.pages_per_block;
71 if (param_has_value(params, "page")) {
72 pos = chip_params.page_size * param_get_intx(params, "page");
73 mult = chip_params.page_size;
74 } else if (param_has_value(params, "block")) {
75 pos = block_size * param_get_intx(params, "block");
77 } else if (param_has_value(params, "pos")) {
78 pos = param_get_intx(params, "pos");
81 /* Erase whole chip */
82 if (ioctl(fd, DIOCGMEDIASIZE, &count) == -1) {
91 if (pos % block_size) {
92 fprintf(stderr, "Position must be block-size aligned!\n");
98 start = pos / block_size;
99 nblocks = count / block_size;
101 for (i = 0; i < nblocks; i++) {
102 if (g_delete(fd, (start + i) * block_size, block_size) == -1) {
103 perrorf("Cannot erase block %d - probably a bad block",