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// SPDX-License-Identifier: GPL-2.0-only
// SPDX-FileCopyrightText: © 2011 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
/*
* 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>
static int do_memcpy(int argc, char *argv[])
{
loff_t count;
int sourcefd, destfd;
int ret = 0;
char *buf;
if (memcpy_parse_options(argc, argv, &sourcefd, &destfd, &count,
0, O_WRONLY | O_CREAT) < 0)
return 1;
buf = xmalloc(RW_BUF_SIZE);
while (count > 0) {
int now, r;
now = min_t(loff_t, RW_BUF_SIZE, count);
r = read(sourcefd, buf, now);
if (r < 0) {
perror("read");
goto out;
}
if (!r)
break;
if (write_full(destfd, buf, r) < 0) {
perror("write");
goto out;
}
count -= r;
if (ctrlc())
goto out;
}
if (count) {
printf("ran out of data\n");
ret = 1;
}
out:
free(buf);
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
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