efi_fdt.c revision 346302 
1/*-
2 * Copyright (c) 2014 The FreeBSD Foundation
3 * All rights reserved.
4 *
5 * This software was developed by Andrew Turner under
6 * sponsorship from the FreeBSD Foundation.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD: stable/11/stand/efi/fdt/efi_fdt.c 346302 2019-04-16 21:01:07Z kevans $");
32
33#include <sys/param.h>
34#include <stand.h>
35#include <efi.h>
36#include <efilib.h>
37#include <fdt_platform.h>
38
39#include "bootstrap.h"
40
41static EFI_GUID fdtdtb = FDT_TABLE_GUID;
42
43int
44fdt_platform_load_dtb(void)
45{
46	struct fdt_header *hdr;
47
48	hdr = efi_get_table(&fdtdtb);
49	if (hdr == NULL)
50		return (1);
51	if (fdt_load_dtb_addr(hdr) != 0)
52		return (1);
53	printf("Using DTB provided by EFI at %p.\n", hdr);
54
55	return (0);
56}
57
58void
59fdt_platform_load_overlays(void)
60{
61
62	fdt_load_dtb_overlays(NULL);
63}
64
65void
66fdt_platform_fixups(void)
67{
68
69	fdt_apply_overlays();
70}
71