2010-08-25 14:36:17 +00:00
|
|
|
/*
|
|
|
|
* nandwrite.c - ported to busybox from mtd-utils
|
|
|
|
*
|
|
|
|
* Author: Baruch Siach <baruch@tkos.co.il>, Orex Computed Radiography
|
|
|
|
*
|
|
|
|
* Licensed under GPLv2, see file LICENSE in this source tree.
|
|
|
|
*
|
|
|
|
* TODO: add support for large (>4GB) MTD devices
|
|
|
|
*/
|
|
|
|
|
|
|
|
//applet:IF_NANDWRITE(APPLET(nandwrite, _BB_DIR_USR_SBIN, _BB_SUID_DROP))
|
|
|
|
|
|
|
|
//kbuild:lib-$(CONFIG_NANDWRITE) += nandwrite.o
|
|
|
|
|
|
|
|
//config:config NANDWRITE
|
|
|
|
//config: bool "nandwrite"
|
|
|
|
//config: default n
|
|
|
|
//config: depends on PLATFORM_LINUX
|
|
|
|
//config: help
|
|
|
|
//config: Write to the specified MTD device, with bad blocks awareness
|
|
|
|
|
|
|
|
#include "libbb.h"
|
|
|
|
#include <mtd/mtd-user.h>
|
|
|
|
|
|
|
|
//usage:#define nandwrite_trivial_usage
|
|
|
|
//usage: "[-p] [-s ADDR] MTD_DEVICE [FILE]"
|
|
|
|
//usage:#define nandwrite_full_usage "\n\n"
|
|
|
|
//usage: "Write to the specified MTD device\n"
|
|
|
|
//usage: "\nOptions:"
|
|
|
|
//usage: "\n -p Pad to page size"
|
|
|
|
//usage: "\n -s ADDR Start address"
|
|
|
|
|
|
|
|
static unsigned next_good_eraseblock(int fd, struct mtd_info_user *meminfo,
|
|
|
|
unsigned block_offset)
|
|
|
|
{
|
|
|
|
while (1) {
|
|
|
|
loff_t offs;
|
|
|
|
if (block_offset >= meminfo->size)
|
|
|
|
bb_error_msg_and_die("not enough space in MTD device");
|
|
|
|
offs = block_offset;
|
|
|
|
if (xioctl(fd, MEMGETBADBLOCK, &offs) == 0)
|
|
|
|
return block_offset;
|
|
|
|
/* ioctl returned 1 => "bad block" */
|
|
|
|
printf("Skipping bad block at 0x%08x\n", block_offset);
|
|
|
|
block_offset += meminfo->erasesize;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
int nandwrite_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
|
|
int nandwrite_main(int argc UNUSED_PARAM, char **argv)
|
|
|
|
{
|
|
|
|
unsigned opts;
|
|
|
|
int fd;
|
|
|
|
ssize_t cnt;
|
|
|
|
unsigned mtdoffset, meminfo_writesize;
|
|
|
|
struct mtd_info_user meminfo;
|
|
|
|
unsigned char *filebuf;
|
|
|
|
const char *opt_s = "0";
|
|
|
|
enum {
|
|
|
|
OPT_p = (1 << 0),
|
|
|
|
OPT_s = (1 << 1),
|
|
|
|
};
|
|
|
|
|
|
|
|
opt_complementary = "-1:?2";
|
|
|
|
opts = getopt32(argv, "ps:", &opt_s);
|
|
|
|
argv += optind;
|
|
|
|
|
|
|
|
if (argv[1])
|
|
|
|
xmove_fd(xopen_stdin(argv[1]), STDIN_FILENO);
|
|
|
|
|
|
|
|
fd = xopen(argv[0], O_RDWR);
|
|
|
|
xioctl(fd, MEMGETINFO, &meminfo);
|
|
|
|
|
2010-08-29 07:36:49 +00:00
|
|
|
mtdoffset = bb_strtou(opt_s, NULL, 0);
|
2010-08-29 11:29:02 +00:00
|
|
|
if (errno)
|
|
|
|
bb_error_msg_and_die("invalid number '%s'", opt_s);
|
2010-08-25 14:36:17 +00:00
|
|
|
|
|
|
|
/* Pull it into a CPU register (hopefully) - smaller code that way */
|
|
|
|
meminfo_writesize = meminfo.writesize;
|
|
|
|
|
|
|
|
if (mtdoffset & (meminfo_writesize - 1))
|
|
|
|
bb_error_msg_and_die("start address is not page aligned");
|
|
|
|
|
|
|
|
filebuf = xmalloc(meminfo_writesize);
|
|
|
|
|
|
|
|
cnt = -1;
|
|
|
|
while (mtdoffset < meminfo.size) {
|
|
|
|
unsigned blockstart = mtdoffset & ~(meminfo.erasesize - 1);
|
|
|
|
if (blockstart == mtdoffset) {
|
|
|
|
/* starting a new eraseblock */
|
|
|
|
mtdoffset = next_good_eraseblock(fd, &meminfo, blockstart);
|
|
|
|
printf("Writing at 0x%08x\n", mtdoffset);
|
|
|
|
}
|
|
|
|
/* get some more data from input */
|
|
|
|
cnt = full_read(STDIN_FILENO, filebuf, meminfo_writesize);
|
|
|
|
if (cnt == 0) {
|
|
|
|
/* even with -p, we do not pad past the end of input
|
|
|
|
* (-p only zero-pads last incomplete page)
|
|
|
|
*/
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (cnt < meminfo_writesize) {
|
|
|
|
if (!(opts & OPT_p))
|
|
|
|
bb_error_msg_and_die("input size is not rounded up to page size, "
|
|
|
|
"use -p to zero pad");
|
|
|
|
/* zero pad to end of write block */
|
|
|
|
memset(filebuf + cnt, 0, meminfo_writesize - cnt);
|
|
|
|
}
|
|
|
|
xlseek(fd, mtdoffset, SEEK_SET);
|
|
|
|
xwrite(fd, filebuf, meminfo_writesize);
|
|
|
|
mtdoffset += meminfo_writesize;
|
|
|
|
if (cnt < meminfo_writesize)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (cnt != 0) {
|
|
|
|
/* We filled entire MTD, but did we reach EOF on input? */
|
|
|
|
if (full_read(STDIN_FILENO, filebuf, meminfo_writesize) != 0) {
|
|
|
|
/* no */
|
|
|
|
bb_error_msg_and_die("not enough space in MTD device");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ENABLE_FEATURE_CLEAN_UP) {
|
|
|
|
free(filebuf);
|
|
|
|
close(fd);
|
|
|
|
}
|
|
|
|
|
|
|
|
return EXIT_SUCCESS;
|
|
|
|
}
|