1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2010-2012 Semihalf. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 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. 15 * 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 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30__FBSDID("$FreeBSD: stable/11/usr.sbin/nandtool/nand_read.c 330449 2018-03-05 07:26:05Z eadler $"); 31 32#include <stdio.h> 33#include <stdlib.h> 34#include <unistd.h> 35#include <fcntl.h> 36#include <libgeom.h> 37#include <sys/disk.h> 38#include <dev/nand/nand_dev.h> 39#include "nandtool.h" 40 41int nand_read(struct cmd_param *params) 42{ 43 struct chip_param_io chip_params; 44 int fd = -1, out_fd = -1, done = 0, ret = 0; 45 char *dev, *out; 46 int pos, count, mult, block_size; 47 uint8_t *buf = NULL; 48 49 if (!(dev = param_get_string(params, "dev"))) { 50 fprintf(stderr, "You must specify 'dev' parameter\n"); 51 return (1); 52 } 53 54 if ((out = param_get_string(params, "out"))) { 55 out_fd = open(out, O_WRONLY|O_CREAT, 0666); 56 if (out_fd == -1) { 57 perrorf("Cannot open %s for writing", out); 58 return (1); 59 } 60 } 61 62 if ((fd = g_open(dev, 1)) == -1) { 63 perrorf("Cannot open %s", dev); 64 ret = 1; 65 goto out; 66 } 67 68 if (ioctl(fd, NAND_IO_GET_CHIP_PARAM, &chip_params) == -1) { 69 perrorf("Cannot ioctl(NAND_IO_GET_CHIP_PARAM)"); 70 ret = 1; 71 goto out; 72 } 73 74 block_size = chip_params.page_size * chip_params.pages_per_block; 75 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"); 81 mult = block_size; 82 } else if (param_has_value(params, "pos")) { 83 pos = param_get_int(params, "pos"); 84 mult = 1; 85 if (pos % chip_params.page_size) { 86 fprintf(stderr, "Position must be page-size aligned!\n"); 87 ret = 1; 88 goto out; 89 } 90 } else { 91 fprintf(stderr, "You must specify one of: 'block', 'page'," 92 "'pos' arguments\n"); 93 ret = 1; 94 goto out; 95 } 96 97 if (!(param_has_value(params, "count"))) 98 count = mult; 99 else 100 count = param_get_int(params, "count") * mult; 101 102 if (!(buf = malloc(chip_params.page_size))) { 103 perrorf("Cannot allocate buffer [size %x]", 104 chip_params.page_size); 105 ret = 1; 106 goto out; 107 } 108 109 lseek(fd, pos, SEEK_SET); 110 111 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); 115 goto out; 116 } 117 118 if (out_fd != -1) { 119 done += 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); 123 ret = 1; 124 goto out; 125 } 126 } else { 127 hexdumpoffset(buf, chip_params.page_size, done); 128 done += ret; 129 } 130 } 131 132out: 133 g_close(fd); 134 if (out_fd != -1) 135 close(out_fd); 136 if (buf) 137 free(buf); 138 139 return (ret); 140} 141 142