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