1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/*-
* Copyright (c) 2013 Juniper Networks, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_platform.h"
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/linker.h>
#include <machine/metadata.h>
#include <x86/fdt.h>
#include <dev/fdt/fdt_common.h>
#include <dev/ofw/openfirm.h>
int
x86_init_fdt(void)
{
void *dtbp, *mdp;
int error;
if (OF_install(OFW_FDT, 0) == FALSE) {
error = ENXIO;
goto out;
}
mdp = preload_search_by_type("elf kernel");
if (mdp == NULL)
mdp = preload_search_by_type("elf32 kernel");
dtbp = (mdp != NULL) ? MD_FETCH(mdp, MODINFOMD_DTBP, void *) : NULL;
#if defined(FDT_DTB_STATIC)
/*
* In case the device tree blob was not retrieved (from metadata) try
* to use the statically embedded one.
*/
if (dtbp == NULL)
dtbp = &fdt_static_dtb;
#endif
if (dtbp == NULL) {
error = ENOENT;
goto out;
}
error = OF_init(dtbp) ? ENXIO : 0;
out:
return (error);
}
|
