1/*-
2 * Copyright (c) 2010 Rui Paulo <rpaulo@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#if defined(LOADER_FDT_SUPPORT)
28#include <sys/param.h>
29#include <fdt_platform.h>
30#endif
31
32#include "loader_efi.h"
33
34int
35efi_autoload(void)
36{
37
38#if defined(LOADER_FDT_SUPPORT)
39	/*
40	 * Setup the FDT early so that we're not loading files during bi_load.
41	 * Any such loading is inherently broken since bi_load uses the space
42	 * just after all currently loaded files for the data that will be
43	 * passed to the kernel and newly loaded files will be positioned in
44	 * that same space.
45	 *
46	 * We're glossing over errors here because LOADER_FDT_SUPPORT does not
47	 * imply that we're on a platform where FDT is a requirement.  If we
48	 * fix this, then the error handling here should be fixed accordingly.
49	 */
50	if (fdt_is_setup() == 0)
51		fdt_setup_fdtp();
52#endif
53	return (0);
54}
55