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_erase.c 235537 2012-05-17 10:11:18Z gber $"); 29 30#include <stdio.h> 31#include <stdlib.h> 32#include <unistd.h> 33#include <sys/types.h> 34#include <sys/disk.h> 35#include <libgeom.h> 36#include <dev/nand/nand_dev.h> 37#include "nandtool.h" 38 39int nand_erase(struct cmd_param *params) 40{ 41 struct chip_param_io chip_params; 42 char *dev; 43 int fd = -1, ret = 0; 44 off_t pos, count; 45 off_t start, nblocks, i; 46 int block_size, mult; 47 48 if (!(dev = param_get_string(params, "dev"))) { 49 fprintf(stderr, "Please supply valid 'dev' parameter.\n"); 50 return (1); 51 } 52 53 if (param_has_value(params, "count")) 54 count = param_get_intx(params, "count"); 55 else 56 count = 1; 57 58 if ((fd = g_open(dev, 1)) < 0) { 59 perrorf("Cannot open %s", dev); 60 return (1); 61 } 62 63 if (ioctl(fd, NAND_IO_GET_CHIP_PARAM, &chip_params) == -1) { 64 perrorf("Cannot ioctl(NAND_IO_GET_CHIP_PARAM)"); 65 ret = 1; 66 goto out; 67 } 68 69 block_size = chip_params.page_size * chip_params.pages_per_block; 70 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"); 76 mult = block_size; 77 } else if (param_has_value(params, "pos")) { 78 pos = param_get_intx(params, "pos"); 79 mult = 1; 80 } else { 81 /* Erase whole chip */ 82 if (ioctl(fd, DIOCGMEDIASIZE, &count) == -1) { 83 ret = 1; 84 goto out; 85 } 86 87 pos = 0; 88 mult = 1; 89 } 90 91 if (pos % block_size) { 92 fprintf(stderr, "Position must be block-size aligned!\n"); 93 ret = 1; 94 goto out; 95 } 96 97 count *= mult; 98 start = pos / block_size; 99 nblocks = count / block_size; 100 101 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", 104 start + i); 105 ret = 1; 106 } 107 } 108 109out: 110 g_close(fd); 111 112 return (ret); 113} 114 115