net: tftpput: add tftpput command

This adds the tftpput command to U-Boot.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/common/cmd_net.c b/common/cmd_net.c
index f610385..f89a24b 100644
--- a/common/cmd_net.c
+++ b/common/cmd_net.c
@@ -52,6 +52,22 @@
 	"[loadAddress] [[hostIPaddr:]bootfilename]"
 );
 
+#ifdef CONFIG_CMD_TFTPPUT
+int do_tftpput(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	int ret;
+
+	ret = netboot_common(TFTPPUT, cmdtp, argc, argv);
+	return ret;
+}
+
+U_BOOT_CMD(
+	tftpput,	4,	1,	do_tftpput,
+	"TFTP put command, for uploading files to a server",
+	"Address Size [[hostIPaddr:]filename]"
+);
+#endif
+
 #ifdef CONFIG_CMD_TFTPSRV
 static int do_tftpsrv(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
 {
@@ -203,6 +219,13 @@
 
 		break;
 
+#ifdef CONFIG_CMD_TFTPPUT
+	case 4:
+		save_addr = strict_strtoul(argv[1], NULL, 16);
+		save_size = strict_strtoul(argv[2], NULL, 16);
+		copy_filename(BootFile, argv[3], sizeof(BootFile));
+		break;
+#endif
 	default:
 		show_boot_progress (-80);
 		return cmd_usage(cmdtp);