153 lines
3.4 KiB
C
153 lines
3.4 KiB
C
/*
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* (C) Copyright 2000
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/**
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* @file
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* @brief memcpy: memory copy command
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*/
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#include <common.h>
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#include <command.h>
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#include <malloc.h>
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#include <errno.h>
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#include <fs.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <linux/stat.h>
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#include <xfuncs.h>
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static int do_mem_cp(cmd_tbl_t *cmdtp, int argc, char *argv[])
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{
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ulong count;
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ulong dest, src;
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char *sourcefile = memory_device;
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char *destfile = memory_device;
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int sourcefd, destfd;
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int mode = O_RWSIZE_1;
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struct stat statbuf;
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int ret = 0;
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if (mem_parse_options(argc, argv, "bwls:d:", &mode, &sourcefile, &destfile) < 0)
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return 1;
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if (optind + 2 > argc) {
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u_boot_cmd_usage(cmdtp);
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return 1;
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}
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src = simple_strtoul(argv[optind], NULL, 0);
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dest = simple_strtoul(argv[optind + 1], NULL, 0);
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if (optind + 2 == argc) {
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if (sourcefile == memory_device) {
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printf("source and count not given\n");
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return 1;
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}
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if (stat(sourcefile, &statbuf)) {
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perror("stat");
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return 1;
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}
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count = statbuf.st_size - src;
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} else {
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count = simple_strtoul(argv[optind + 2], NULL, 0);
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}
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sourcefd = open_and_lseek(sourcefile, mode | O_RDONLY, src);
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if (sourcefd < 0)
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return 1;
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destfd = open_and_lseek(destfile, O_WRONLY | O_CREAT | mode, dest);
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if (destfd < 0) {
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close(sourcefd);
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return 1;
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}
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while (count > 0) {
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int now, r, w;
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now = min(RW_BUF_SIZE, count);
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if ((r = read(sourcefd, rw_buf, now)) < 0) {
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perror("read");
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goto out;
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}
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if ((w = write(destfd, rw_buf, r)) < 0) {
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perror("write");
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goto out;
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}
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if (r < now)
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break;
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if (w < r)
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break;
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count -= now;
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}
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if (count) {
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printf("ran out of data\n");
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ret = 1;
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}
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out:
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close(sourcefd);
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close(destfd);
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return ret;
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}
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static __maybe_unused char cmd_memcpy_help[] =
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"Usage: memcpy [OPTIONS] <src> <dst> <count>\n"
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"\n"
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"options:\n"
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" -b, -w, -l use byte, halfword, or word accesses\n"
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" -s <file> source file (default /dev/mem)\n"
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" -d <file> destination file (default /dev/mem)\n"
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"\n"
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"Copy memory at <src> of <count> bytes to <dst>\n";
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U_BOOT_CMD_START(memcpy)
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.maxargs = CONFIG_MAXARGS,
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.cmd = do_mem_cp,
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.usage = "memory copy",
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U_BOOT_CMD_HELP(cmd_memcpy_help)
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U_BOOT_CMD_END
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/**
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@page mcpy_command memcpy: Copy something to something
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Usage is: memcpy [OPTIONS] \<src> \<dst> \<count>
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Options are:
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- -s \<file> source file (default \c /dev/mem)
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- -d \<file> destination file (default \c /dev/mem)
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- -b accesses in bytes
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- -w accesses in halfwords (16bit)
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- -l accesses in words (32bit)
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Copy memory at \<src> of \<count> bytes to \<dst>.
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*/
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