151 lines
3.2 KiB
C
151 lines
3.2 KiB
C
/*
|
|
* Copyright (c) 2011 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Memory Functions
|
|
*
|
|
* Copied from FADS ROM, Dan Malek (dmalek@jlc.net)
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <init.h>
|
|
#include <driver.h>
|
|
#include <malloc.h>
|
|
#include <errno.h>
|
|
#include <fs.h>
|
|
#include <libfile.h>
|
|
#include <fcntl.h>
|
|
#include <getopt.h>
|
|
#include <linux/stat.h>
|
|
#include <xfuncs.h>
|
|
|
|
extern char *mem_rw_buf;
|
|
|
|
static char *devmem = "/dev/mem";
|
|
|
|
static int do_memcpy(int argc, char *argv[])
|
|
{
|
|
loff_t count, dest, src;
|
|
char *sourcefile = devmem;
|
|
char *destfile = devmem;
|
|
int sourcefd, destfd;
|
|
int mode = 0;
|
|
struct stat statbuf;
|
|
int ret = 0;
|
|
|
|
if (mem_parse_options(argc, argv, "bwlqs:d:", &mode, &sourcefile,
|
|
&destfile, NULL) < 0)
|
|
return 1;
|
|
|
|
if (optind + 2 > argc)
|
|
return COMMAND_ERROR_USAGE;
|
|
|
|
src = strtoull_suffix(argv[optind], NULL, 0);
|
|
dest = strtoull_suffix(argv[optind + 1], NULL, 0);
|
|
|
|
if (optind + 2 == argc) {
|
|
if (sourcefile == devmem) {
|
|
printf("source and count not given\n");
|
|
return 1;
|
|
}
|
|
if (stat(sourcefile, &statbuf)) {
|
|
perror("stat");
|
|
return 1;
|
|
}
|
|
count = statbuf.st_size - src;
|
|
} else {
|
|
count = strtoull_suffix(argv[optind + 2], NULL, 0);
|
|
}
|
|
|
|
sourcefd = open_and_lseek(sourcefile, mode | O_RDONLY, src);
|
|
if (sourcefd < 0)
|
|
return 1;
|
|
|
|
destfd = open_and_lseek(destfile, O_WRONLY | O_CREAT | mode, dest);
|
|
if (destfd < 0) {
|
|
close(sourcefd);
|
|
return 1;
|
|
}
|
|
|
|
while (count > 0) {
|
|
int now, r, w, tmp;
|
|
|
|
now = min((loff_t)RW_BUF_SIZE, count);
|
|
|
|
r = read(sourcefd, mem_rw_buf, now);
|
|
if (r < 0) {
|
|
perror("read");
|
|
goto out;
|
|
}
|
|
|
|
if (!r)
|
|
break;
|
|
|
|
tmp = 0;
|
|
now = r;
|
|
while (now) {
|
|
w = write(destfd, mem_rw_buf + tmp, now);
|
|
if (w < 0) {
|
|
perror("write");
|
|
goto out;
|
|
}
|
|
if (!w)
|
|
break;
|
|
|
|
now -= w;
|
|
tmp += w;
|
|
}
|
|
|
|
count -= r;
|
|
|
|
if (ctrlc())
|
|
goto out;
|
|
}
|
|
|
|
if (count) {
|
|
printf("ran out of data\n");
|
|
ret = 1;
|
|
}
|
|
|
|
out:
|
|
close(sourcefd);
|
|
close(destfd);
|
|
|
|
return ret;
|
|
}
|
|
|
|
BAREBOX_CMD_HELP_START(memcpy)
|
|
BAREBOX_CMD_HELP_TEXT("Copy memory at SRC of COUNT bytes to DEST")
|
|
BAREBOX_CMD_HELP_TEXT("")
|
|
BAREBOX_CMD_HELP_TEXT("Options:")
|
|
BAREBOX_CMD_HELP_OPT ("-b", "byte access")
|
|
BAREBOX_CMD_HELP_OPT ("-w", "word access (16 bit)")
|
|
BAREBOX_CMD_HELP_OPT ("-l", "long access (32 bit)")
|
|
BAREBOX_CMD_HELP_OPT ("-q", "quad access (64 bit)")
|
|
BAREBOX_CMD_HELP_OPT ("-s FILE", "source file (default /dev/mem)")
|
|
BAREBOX_CMD_HELP_OPT ("-d FILE", "write file (default /dev/mem)")
|
|
BAREBOX_CMD_HELP_END
|
|
|
|
BAREBOX_CMD_START(memcpy)
|
|
.cmd = do_memcpy,
|
|
BAREBOX_CMD_DESC("memory copy")
|
|
BAREBOX_CMD_OPTS("[-bwlsd] SRC DEST COUNT")
|
|
BAREBOX_CMD_GROUP(CMD_GRP_MEM)
|
|
BAREBOX_CMD_HELP(cmd_memcpy_help)
|
|
BAREBOX_CMD_END
|