blob: 526aedb51556b60efb35960a4a2012af170a8e78
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 | |
57 | struct 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 | |
76 | struct fdt_reserve_entry { |
77 | fdt64_t address; |
78 | fdt64_t size; |
79 | }; |
80 | |
81 | struct fdt_node_header { |
82 | fdt32_t tag; |
83 | char name[0]; |
84 | }; |
85 | |
86 | struct 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 |