void
hexdump(uint8_t *buf, int length)
{
hexdumpoffset(buf, length, 0);
}
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);
}
