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1/* SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause) */
2#ifndef FDT_H
3#define FDT_H
4/*
5 * libfdt - Flat Device Tree manipulation
6 * Copyright (C) 2006 David Gibson, IBM Corporation.
7 * Copyright 2012 Kim Phillips, Freescale Semiconductor.
8 */
9
10#ifndef __ASSEMBLER__
11
12struct fdt_header {
13 fdt32_t magic; /* magic word FDT_MAGIC */
14 fdt32_t totalsize; /* total size of DT block */
15 fdt32_t off_dt_struct; /* offset to structure */
16 fdt32_t off_dt_strings; /* offset to strings */
17 fdt32_t off_mem_rsvmap; /* offset to memory reserve map */
18 fdt32_t version; /* format version */
19 fdt32_t last_comp_version; /* last compatible version */
20
21 /* version 2 fields below */
22 fdt32_t boot_cpuid_phys; /* Which physical CPU id we're
23 booting on */
24 /* version 3 fields below */
25 fdt32_t size_dt_strings; /* size of the strings block */
26
27 /* version 17 fields below */
28 fdt32_t size_dt_struct; /* size of the structure block */
29};
30
31struct fdt_reserve_entry {
32 fdt64_t address;
33 fdt64_t size;
34};
35
36struct fdt_node_header {
37 fdt32_t tag;
38 char name[];
39};
40
41struct fdt_property {
42 fdt32_t tag;
43 fdt32_t len;
44 fdt32_t nameoff;
45 char data[];
46};
47
48#endif /* !__ASSEMBLER__ */
49
50#define FDT_MAGIC 0xd00dfeed /* 4: version, 4: total size */
51#define FDT_TAGSIZE sizeof(fdt32_t)
52
53#define FDT_BEGIN_NODE 0x1 /* Start node: full name */
54#define FDT_END_NODE 0x2 /* End node */
55#define FDT_PROP 0x3 /* Property: name off,
56 size, content */
57#define FDT_NOP 0x4 /* nop */
58#define FDT_END 0x9
59
60#define FDT_V1_SIZE (7*sizeof(fdt32_t))
61#define FDT_V2_SIZE (FDT_V1_SIZE + sizeof(fdt32_t))
62#define FDT_V3_SIZE (FDT_V2_SIZE + sizeof(fdt32_t))
63#define FDT_V16_SIZE FDT_V3_SIZE
64#define FDT_V17_SIZE (FDT_V16_SIZE + sizeof(fdt32_t))
65
66#endif /* FDT_H */