nand_readoob.c revision 285830
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/10.2/usr.sbin/nandtool/nand_readoob.c 235537 2012-05-17 10:11:18Z gber $"); 29 30#include <stdio.h> 31#include <stdlib.h> 32#include <unistd.h> 33#include <fcntl.h> 34#include <libgeom.h> 35#include <sys/types.h> 36#include <sys/disk.h> 37#include <dev/nand/nand_dev.h> 38#include "nandtool.h" 39 40int nand_read_oob(struct cmd_param *params) 41{ 42 struct chip_param_io chip_params; 43 struct nand_oob_rw req; 44 char *dev, *out; 45 int fd = -1, fd_out = -1, ret = 0; 46 int page; 47 uint8_t *buf = NULL; 48 49 if ((page = param_get_int(params, "page")) < 0) { 50 fprintf(stderr, "You must supply valid 'page' argument.\n"); 51 return (1); 52 } 53 54 if (!(dev = param_get_string(params, "dev"))) { 55 fprintf(stderr, "You must supply 'dev' argument.\n"); 56 return (1); 57 } 58 59 if ((out = param_get_string(params, "out"))) { 60 if ((fd_out = open(out, O_WRONLY | O_CREAT)) == -1) { 61 perrorf("Cannot open %s", out); 62 ret = 1; 63 goto out; 64 } 65 } 66 67 if ((fd = g_open(dev, 1)) == -1) { 68 perrorf("Cannot open %s", dev); 69 ret = 1; 70 goto out; 71 } 72 73 if (ioctl(fd, NAND_IO_GET_CHIP_PARAM, &chip_params) == -1) { 74 perrorf("Cannot ioctl(NAND_IO_GET_CHIP_PARAM)"); 75 ret = 1; 76 goto out; 77 } 78 79 buf = malloc(chip_params.oob_size); 80 if (buf == NULL) { 81 perrorf("Cannot allocate %d bytes\n", chip_params.oob_size); 82 ret = 1; 83 goto out; 84 } 85 86 req.page = page; 87 req.len = chip_params.oob_size; 88 req.data = buf; 89 90 if (ioctl(fd, NAND_IO_OOB_READ, &req) == -1) { 91 perrorf("Cannot read OOB from %s", dev); 92 ret = 1; 93 goto out; 94 } 95 96 if (fd_out != -1) 97 write(fd_out, buf, chip_params.oob_size); 98 else 99 hexdump(buf, chip_params.oob_size); 100 101out: 102 close(fd_out); 103 104 if (fd != -1) 105 g_close(fd); 106 if (buf) 107 free(buf); 108 109 return (ret); 110} 111 112