1235537Sgber/*- 2330449Seadler * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3330449Seadler * 4235537Sgber * Copyright (c) 2010-2012 Semihalf. 5235537Sgber * All rights reserved. 6235537Sgber * 7235537Sgber * Redistribution and use in source and binary forms, with or without 8235537Sgber * modification, are permitted provided that the following conditions 9235537Sgber * are met: 10235537Sgber * 1. Redistributions of source code must retain the above copyright 11235537Sgber * notice, this list of conditions and the following disclaimer. 12235537Sgber * 2. Redistributions in binary form must reproduce the above copyright 13235537Sgber * notice, this list of conditions and the following disclaimer in the 14235537Sgber * documentation and/or other materials provided with the distribution. 15235537Sgber * 16235537Sgber * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17235537Sgber * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18235537Sgber * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19235537Sgber * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20235537Sgber * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21235537Sgber * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22235537Sgber * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23235537Sgber * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24235537Sgber * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25235537Sgber * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26235537Sgber * SUCH DAMAGE. 27235537Sgber */ 28235537Sgber 29235537Sgber#include <sys/cdefs.h> 30235537Sgber__FBSDID("$FreeBSD: stable/11/usr.sbin/nandtool/nand_read.c 330449 2018-03-05 07:26:05Z eadler $"); 31235537Sgber 32235537Sgber#include <stdio.h> 33235537Sgber#include <stdlib.h> 34235537Sgber#include <unistd.h> 35235537Sgber#include <fcntl.h> 36235537Sgber#include <libgeom.h> 37235537Sgber#include <sys/disk.h> 38235537Sgber#include <dev/nand/nand_dev.h> 39235537Sgber#include "nandtool.h" 40235537Sgber 41235537Sgberint nand_read(struct cmd_param *params) 42235537Sgber{ 43235537Sgber struct chip_param_io chip_params; 44235537Sgber int fd = -1, out_fd = -1, done = 0, ret = 0; 45235537Sgber char *dev, *out; 46235537Sgber int pos, count, mult, block_size; 47235537Sgber uint8_t *buf = NULL; 48235537Sgber 49235537Sgber if (!(dev = param_get_string(params, "dev"))) { 50235537Sgber fprintf(stderr, "You must specify 'dev' parameter\n"); 51235537Sgber return (1); 52235537Sgber } 53235537Sgber 54235537Sgber if ((out = param_get_string(params, "out"))) { 55327652Sjilles out_fd = open(out, O_WRONLY|O_CREAT, 0666); 56235537Sgber if (out_fd == -1) { 57235537Sgber perrorf("Cannot open %s for writing", out); 58235537Sgber return (1); 59235537Sgber } 60235537Sgber } 61235537Sgber 62235537Sgber if ((fd = g_open(dev, 1)) == -1) { 63235537Sgber perrorf("Cannot open %s", dev); 64235537Sgber ret = 1; 65235537Sgber goto out; 66235537Sgber } 67235537Sgber 68235537Sgber if (ioctl(fd, NAND_IO_GET_CHIP_PARAM, &chip_params) == -1) { 69235537Sgber perrorf("Cannot ioctl(NAND_IO_GET_CHIP_PARAM)"); 70235537Sgber ret = 1; 71235537Sgber goto out; 72235537Sgber } 73235537Sgber 74235537Sgber block_size = chip_params.page_size * chip_params.pages_per_block; 75235537Sgber 76235537Sgber if (param_has_value(params, "page")) { 77235537Sgber pos = chip_params.page_size * param_get_int(params, "page"); 78235537Sgber mult = chip_params.page_size; 79235537Sgber } else if (param_has_value(params, "block")) { 80235537Sgber pos = block_size * param_get_int(params, "block"); 81235537Sgber mult = block_size; 82235537Sgber } else if (param_has_value(params, "pos")) { 83235537Sgber pos = param_get_int(params, "pos"); 84235537Sgber mult = 1; 85235537Sgber if (pos % chip_params.page_size) { 86235537Sgber fprintf(stderr, "Position must be page-size aligned!\n"); 87235537Sgber ret = 1; 88235537Sgber goto out; 89235537Sgber } 90235537Sgber } else { 91235537Sgber fprintf(stderr, "You must specify one of: 'block', 'page'," 92235537Sgber "'pos' arguments\n"); 93235537Sgber ret = 1; 94235537Sgber goto out; 95235537Sgber } 96235537Sgber 97235537Sgber if (!(param_has_value(params, "count"))) 98235537Sgber count = mult; 99235537Sgber else 100235537Sgber count = param_get_int(params, "count") * mult; 101235537Sgber 102235537Sgber if (!(buf = malloc(chip_params.page_size))) { 103235537Sgber perrorf("Cannot allocate buffer [size %x]", 104235537Sgber chip_params.page_size); 105235537Sgber ret = 1; 106235537Sgber goto out; 107235537Sgber } 108235537Sgber 109235537Sgber lseek(fd, pos, SEEK_SET); 110235537Sgber 111235537Sgber while (done < count) { 112235537Sgber if ((ret = read(fd, buf, chip_params.page_size)) != 113235537Sgber (int32_t)chip_params.page_size) { 114235537Sgber perrorf("read error (read %d bytes)", ret); 115235537Sgber goto out; 116235537Sgber } 117235537Sgber 118235537Sgber if (out_fd != -1) { 119235537Sgber done += ret; 120235537Sgber if ((ret = write(out_fd, buf, chip_params.page_size)) != 121235537Sgber (int32_t)chip_params.page_size) { 122235537Sgber perrorf("write error (written %d bytes)", ret); 123235537Sgber ret = 1; 124235537Sgber goto out; 125235537Sgber } 126235537Sgber } else { 127235537Sgber hexdumpoffset(buf, chip_params.page_size, done); 128235537Sgber done += ret; 129235537Sgber } 130235537Sgber } 131235537Sgber 132235537Sgberout: 133235537Sgber g_close(fd); 134235537Sgber if (out_fd != -1) 135235537Sgber close(out_fd); 136235537Sgber if (buf) 137235537Sgber free(buf); 138235537Sgber 139235537Sgber return (ret); 140235537Sgber} 141235537Sgber 142