fdt_empty_tree.c revision 1.1.1.2 
1/*	$NetBSD: fdt_empty_tree.c,v 1.1.1.2 2017/06/08 15:53:12 skrll Exp $	*/
2
3/*
4 * libfdt - Flat Device Tree manipulation
5 * Copyright (C) 2012 David Gibson, IBM Corporation.
6 *
7 * libfdt is dual licensed: you can use it either under the terms of
8 * the GPL, or the BSD license, at your option.
9 *
10 *  a) This library is free software; you can redistribute it and/or
11 *     modify it under the terms of the GNU General Public License as
12 *     published by the Free Software Foundation; either version 2 of the
13 *     License, or (at your option) any later version.
14 *
15 *     This library is distributed in the hope that it will be useful,
16 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
17 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18 *     GNU General Public License for more details.
19 *
20 *     You should have received a copy of the GNU General Public
21 *     License along with this library; if not, write to the Free
22 *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
23 *     MA 02110-1301 USA
24 *
25 * Alternatively,
26 *
27 *  b) Redistribution and use in source and binary forms, with or
28 *     without modification, are permitted provided that the following
29 *     conditions are met:
30 *
31 *     1. Redistributions of source code must retain the above
32 *        copyright notice, this list of conditions and the following
33 *        disclaimer.
34 *     2. Redistributions in binary form must reproduce the above
35 *        copyright notice, this list of conditions and the following
36 *        disclaimer in the documentation and/or other materials
37 *        provided with the distribution.
38 *
39 *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
40 *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
41 *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
42 *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
43 *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
44 *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
49 *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
50 *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
51 *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
52 */
53#include "libfdt_env.h"
54
55#include <fdt.h>
56#include <libfdt.h>
57
58#include "libfdt_internal.h"
59
60int fdt_create_empty_tree(void *buf, int bufsize)
61{
62	int err;
63
64	err = fdt_create(buf, bufsize);
65	if (err)
66		return err;
67
68	err = fdt_finish_reservemap(buf);
69	if (err)
70		return err;
71
72	err = fdt_begin_node(buf, "");
73	if (err)
74		return err;
75
76	err =  fdt_end_node(buf);
77	if (err)
78		return err;
79
80	err = fdt_finish(buf);
81	if (err)
82		return err;
83
84	return fdt_open_into(buf, buf, bufsize);
85}
86
87