1 files changed, 152 insertions, 0 deletions
diff --git a/commands/memcpy.c b/commands/memcpy.c
new file mode 100644
index 0000000000..9935ce0e84
--- /dev/null
+++ b/commands/memcpy.c
@@ -0,0 +1,152 @@
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * 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 as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/**
+ * @file
+ * @brief memcpy: memory copy command
+ */
+
+#include <common.h>
+#include <command.h>
+#include <malloc.h>
+#include <errno.h>
+#include <fs.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <linux/stat.h>
+#include <xfuncs.h>
+
+static int do_mem_cp(cmd_tbl_t *cmdtp, int argc, char *argv[])
+{
+	ulong count;
+	ulong	dest, src;
+	char *sourcefile = memory_device;
+	char *destfile = memory_device;
+	int sourcefd, destfd;
+	int mode = O_RWSIZE_1;
+	struct stat statbuf;
+	int ret = 0;
+
+	if (mem_parse_options(argc, argv, "bwls:d:", &mode, &sourcefile, &destfile) < 0)
+		return 1;
+
+	if (optind + 2 > argc) {
+		u_boot_cmd_usage(cmdtp);
+		return 1;
+	}
+
+	src = simple_strtoul(argv[optind], NULL, 0);
+	dest = simple_strtoul(argv[optind + 1], NULL, 0);
+
+	if (optind + 2 == argc) {
+		if (sourcefile == memory_device) {
+			printf("source and count not given\n");
+			return 1;
+		}
+		if (stat(sourcefile, &statbuf)) {
+			perror("stat");
+			return 1;
+		}
+		count = statbuf.st_size - src;
+	} else {
+		count = simple_strtoul(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;
+
+		now = min(RW_BUF_SIZE, count);
+
+		if ((r = read(sourcefd, rw_buf, now)) < 0) {
+			perror("read");
+			goto out;
+		}
+
+		if ((w = write(destfd, rw_buf, r)) < 0) {
+			perror("write");
+			goto out;
+		}
+
+		if (r < now)
+			break;
+
+		if (w < r)
+			break;
+
+		count -= now;
+	}
+
+	if (count) {
+		printf("ran out of data\n");
+		ret = 1;
+	}
+
+out:
+	close(sourcefd);
+	close(destfd);
+
+	return ret;
+}
+
+static __maybe_unused char cmd_memcpy_help[] =
+"Usage: memcpy [OPTIONS] <src> <dst> <count>\n"
+"\n"
+"options:\n"
+"  -b, -w, -l   use byte, halfword, or word accesses\n"
+"  -s <file>    source file (default /dev/mem)\n"
+"  -d <file>    destination file (default /dev/mem)\n"
+"\n"
+"Copy memory at <src> of <count> bytes to <dst>\n";
+
+U_BOOT_CMD_START(memcpy)
+	.maxargs	= CONFIG_MAXARGS,
+	.cmd		= do_mem_cp,
+	.usage		= "memory copy",
+	U_BOOT_CMD_HELP(cmd_memcpy_help)
+U_BOOT_CMD_END
+
+/**
+@page mcpy_command memcpy: Copy something to something
+
+Usage is: memcpy [OPTIONS] \<src> \<dst> \<count>
+
+Options are:
+- -s \<file>   source file (default \c /dev/mem)
+- -d \<file>   destination file (default \c /dev/mem)
+- -b          accesses in bytes
+- -w          accesses in halfwords (16bit)
+- -l          accesses in words (32bit)
+
+Copy memory at \<src> of \<count> bytes to \<dst>.
+
+*/