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
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23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
35 #include <sys/types.h>
38 #include <dev/nand/nand_dev.h>
41 int nand_erase(struct cmd_param *params)
43 struct chip_param_io chip_params;
47 off_t start, nblocks, i;
50 if (!(dev = param_get_string(params, "dev"))) {
51 fprintf(stderr, "Please supply valid 'dev' parameter.\n");
55 if (param_has_value(params, "count"))
56 count = param_get_intx(params, "count");
60 if ((fd = g_open(dev, 1)) < 0) {
61 perrorf("Cannot open %s", dev);
65 if (ioctl(fd, NAND_IO_GET_CHIP_PARAM, &chip_params) == -1) {
66 perrorf("Cannot ioctl(NAND_IO_GET_CHIP_PARAM)");
71 block_size = chip_params.page_size * chip_params.pages_per_block;
73 if (param_has_value(params, "page")) {
74 pos = chip_params.page_size * param_get_intx(params, "page");
75 mult = chip_params.page_size;
76 } else if (param_has_value(params, "block")) {
77 pos = block_size * param_get_intx(params, "block");
79 } else if (param_has_value(params, "pos")) {
80 pos = param_get_intx(params, "pos");
83 /* Erase whole chip */
84 if (ioctl(fd, DIOCGMEDIASIZE, &count) == -1) {
93 if (pos % block_size) {
94 fprintf(stderr, "Position must be block-size aligned!\n");
100 start = pos / block_size;
101 nblocks = count / block_size;
103 for (i = 0; i < nblocks; i++) {
104 if (g_delete(fd, (start + i) * block_size, block_size) == -1) {
105 perrorf("Cannot erase block %d - probably a bad block",