7f725bcd5c
The NAND Flash environment consists of several distinct components: - NAND framework (drivers harness for NAND controllers and NAND chips) - NAND simulator (NANDsim) - NAND file system (NAND FS) - Companion tools and utilities - Documentation (manual pages) This work is still experimental. Please use with caution. Obtained from: Semihalf Supported by: FreeBSD Foundation, Juniper Networks
140 lines
3.8 KiB
C
140 lines
3.8 KiB
C
/*-
|
|
* 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);
|
|
}
|
|
|