1#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
55#ifndef __ASSEMBLY__
56
57struct fdt_header {
58 fdt32_t magic; /* magic word FDT_MAGIC */
59 fdt32_t totalsize; /* total size of DT block */
60 fdt32_t off_dt_struct; /* offset to structure */
61 fdt32_t off_dt_strings; /* offset to strings */
62 fdt32_t off_mem_rsvmap; /* offset to memory reserve map */
63 fdt32_t version; /* format version */
64 fdt32_t last_comp_version; /* last compatible version */
65
66 /* version 2 fields below */
67 fdt32_t boot_cpuid_phys; /* Which physical CPU id we're
68 booting on */
69 /* version 3 fields below */
70 fdt32_t size_dt_strings; /* size of the strings block */
71
72 /* version 17 fields below */
73 fdt32_t size_dt_struct; /* size of the structure block */
74};
75
76struct fdt_reserve_entry {
77 fdt64_t address;
78 fdt64_t size;
79};
80
81struct fdt_node_header {
82 fdt32_t tag;
83 char name[0];
84};
85
86struct fdt_property {
87 fdt32_t tag;
88 fdt32_t len;
89 fdt32_t nameoff;
90 char data[0];
91};
92
93#endif /* !__ASSEMBLY */
94
95#define FDT_MAGIC 0xd00dfeed /* 4: version, 4: total size */
96#define FDT_TAGSIZE sizeof(fdt32_t)
97
98#define FDT_BEGIN_NODE 0x1 /* Start node: full name */
99#define FDT_END_NODE 0x2 /* End node */
100#define FDT_PROP 0x3 /* Property: name off,
101 size, content */
102#define FDT_NOP 0x4 /* nop */
103#define FDT_END 0x9
104
105#define FDT_V1_SIZE (7*sizeof(fdt32_t))
106#define FDT_V2_SIZE (FDT_V1_SIZE + sizeof(fdt32_t))
107#define FDT_V3_SIZE (FDT_V2_SIZE + sizeof(fdt32_t))
108#define FDT_V16_SIZE FDT_V3_SIZE
109#define FDT_V17_SIZE (FDT_V16_SIZE + sizeof(fdt32_t))
110
111#endif /* FDT_H */
112