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Dan Handley32f21302016-06-02 14:23:40 +01001#ifndef _FDT_H
2#define _FDT_H
3/*
4 * libfdt - Flat Device Tree manipulation
5 * Copyright (C) 2006 David Gibson, IBM Corporation.
6 * Copyright 2012 Kim Phillips, Freescale Semiconductor.
7 *
8 * libfdt is dual licensed: you can use it either under the terms of
9 * the GPL, or the BSD license, at your option.
10 *
11 * a) This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of the
14 * License, or (at your option) any later version.
15 *
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public
22 * License along with this library; if not, write to the Free
23 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
24 * MA 02110-1301 USA
25 *
26 * Alternatively,
27 *
28 * b) Redistribution and use in source and binary forms, with or
29 * without modification, are permitted provided that the following
30 * conditions are met:
31 *
32 * 1. Redistributions of source code must retain the above
33 * copyright notice, this list of conditions and the following
34 * disclaimer.
35 * 2. Redistributions in binary form must reproduce the above
36 * copyright notice, this list of conditions and the following
37 * disclaimer in the documentation and/or other materials
38 * provided with the distribution.
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
41 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
42 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
43 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
44 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
45 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
46 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
47 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
48 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
49 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
50 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
51 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
52 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
53 */
54
Dan Handleyfc0c6452016-06-02 15:28:23 +010055/*
Antonio Nino Diazfecb2c12017-01-16 16:11:48 +000056 * Portions copyright (c) 2016-2017, ARM Limited and Contributors.
Dan Handleyfc0c6452016-06-02 15:28:23 +010057 * All rights reserved.
58 */
59
Dan Handley32f21302016-06-02 14:23:40 +010060#ifndef __ASSEMBLY__
61
Dan Handleyfc0c6452016-06-02 15:28:23 +010062#include <libfdt_env.h>
63
64
Dan Handley32f21302016-06-02 14:23:40 +010065struct fdt_header {
66 fdt32_t magic; /* magic word FDT_MAGIC */
67 fdt32_t totalsize; /* total size of DT block */
68 fdt32_t off_dt_struct; /* offset to structure */
69 fdt32_t off_dt_strings; /* offset to strings */
70 fdt32_t off_mem_rsvmap; /* offset to memory reserve map */
71 fdt32_t version; /* format version */
72 fdt32_t last_comp_version; /* last compatible version */
73
74 /* version 2 fields below */
75 fdt32_t boot_cpuid_phys; /* Which physical CPU id we're
76 booting on */
77 /* version 3 fields below */
78 fdt32_t size_dt_strings; /* size of the strings block */
79
80 /* version 17 fields below */
81 fdt32_t size_dt_struct; /* size of the structure block */
82};
83
84struct fdt_reserve_entry {
85 fdt64_t address;
86 fdt64_t size;
87};
88
89struct fdt_node_header {
90 fdt32_t tag;
Dan Handleyfc0c6452016-06-02 15:28:23 +010091 char name[];
Dan Handley32f21302016-06-02 14:23:40 +010092};
93
94struct fdt_property {
95 fdt32_t tag;
96 fdt32_t len;
97 fdt32_t nameoff;
Dan Handleyfc0c6452016-06-02 15:28:23 +010098 char data[];
Dan Handley32f21302016-06-02 14:23:40 +010099};
100
101#endif /* !__ASSEMBLY */
102
103#define FDT_MAGIC 0xd00dfeed /* 4: version, 4: total size */
104#define FDT_TAGSIZE sizeof(fdt32_t)
105
106#define FDT_BEGIN_NODE 0x1 /* Start node: full name */
107#define FDT_END_NODE 0x2 /* End node */
108#define FDT_PROP 0x3 /* Property: name off,
109 size, content */
110#define FDT_NOP 0x4 /* nop */
111#define FDT_END 0x9
112
113#define FDT_V1_SIZE (7*sizeof(fdt32_t))
114#define FDT_V2_SIZE (FDT_V1_SIZE + sizeof(fdt32_t))
115#define FDT_V3_SIZE (FDT_V2_SIZE + sizeof(fdt32_t))
116#define FDT_V16_SIZE FDT_V3_SIZE
117#define FDT_V17_SIZE (FDT_V16_SIZE + sizeof(fdt32_t))
118
119#endif /* _FDT_H */