diff options
Diffstat (limited to 'usr.sbin/nandtool/nand_read.c')
| -rw-r--r-- | usr.sbin/nandtool/nand_read.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/usr.sbin/nandtool/nand_read.c b/usr.sbin/nandtool/nand_read.c new file mode 100644 index 0000000..5267b7d --- /dev/null +++ b/usr.sbin/nandtool/nand_read.c @@ -0,0 +1,139 @@ +/*- + * Copyright (c) 2010-2012 Semihalf. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <fcntl.h> +#include <libgeom.h> +#include <sys/disk.h> +#include <dev/nand/nand_dev.h> +#include "nandtool.h" + +int nand_read(struct cmd_param *params) +{ + struct chip_param_io chip_params; + int fd = -1, out_fd = -1, done = 0, ret = 0; + char *dev, *out; + int pos, count, mult, block_size; + uint8_t *buf = NULL; + + if (!(dev = param_get_string(params, "dev"))) { + fprintf(stderr, "You must specify 'dev' parameter\n"); + return (1); + } + + if ((out = param_get_string(params, "out"))) { + out_fd = open(out, O_WRONLY|O_CREAT); + if (out_fd == -1) { + perrorf("Cannot open %s for writing", out); + return (1); + } + } + + if ((fd = g_open(dev, 1)) == -1) { + perrorf("Cannot open %s", dev); + ret = 1; + goto out; + } + + if (ioctl(fd, NAND_IO_GET_CHIP_PARAM, &chip_params) == -1) { + perrorf("Cannot ioctl(NAND_IO_GET_CHIP_PARAM)"); + ret = 1; + goto out; + } + + block_size = chip_params.page_size * chip_params.pages_per_block; + + if (param_has_value(params, "page")) { + pos = chip_params.page_size * param_get_int(params, "page"); + mult = chip_params.page_size; + } else if (param_has_value(params, "block")) { + pos = block_size * param_get_int(params, "block"); + mult = block_size; + } else if (param_has_value(params, "pos")) { + pos = param_get_int(params, "pos"); + mult = 1; + if (pos % chip_params.page_size) { + fprintf(stderr, "Position must be page-size aligned!\n"); + ret = 1; + goto out; + } + } else { + fprintf(stderr, "You must specify one of: 'block', 'page'," + "'pos' arguments\n"); + ret = 1; + goto out; + } + + if (!(param_has_value(params, "count"))) + count = mult; + else + count = param_get_int(params, "count") * mult; + + if (!(buf = malloc(chip_params.page_size))) { + perrorf("Cannot allocate buffer [size %x]", + chip_params.page_size); + ret = 1; + goto out; + } + + lseek(fd, pos, SEEK_SET); + + while (done < count) { + if ((ret = read(fd, buf, chip_params.page_size)) != + (int32_t)chip_params.page_size) { + perrorf("read error (read %d bytes)", ret); + goto out; + } + + if (out_fd != -1) { + done += ret; + if ((ret = write(out_fd, buf, chip_params.page_size)) != + (int32_t)chip_params.page_size) { + perrorf("write error (written %d bytes)", ret); + ret = 1; + goto out; + } + } else { + hexdumpoffset(buf, chip_params.page_size, done); + done += ret; + } + } + +out: + g_close(fd); + if (out_fd != -1) + close(out_fd); + if (buf) + free(buf); + + return (ret); +} + |
