1 | #ifndef FDT_H |
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2 | #define FDT_H |
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3 | /* |
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4 | * libfdt - Flat Device Tree manipulation |
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5 | * Copyright (C) 2006 David Gibson, IBM Corporation. |
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6 | * Copyright 2012 Kim Phillips, Freescale Semiconductor. |
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7 | * |
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8 | * libfdt is dual licensed: you can use it either under the terms of |
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9 | * the GPL, or the BSD license, at your option. |
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10 | * |
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11 | * a) This library is free software; you can redistribute it and/or |
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12 | * modify it under the terms of the GNU General Public License as |
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13 | * published by the Free Software Foundation; either version 2 of the |
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14 | * License, or (at your option) any later version. |
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15 | * |
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16 | * This library is distributed in the hope that it will be useful, |
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17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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19 | * GNU General Public License for more details. |
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20 | * |
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21 | * You should have received a copy of the GNU General Public |
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22 | * License along with this library; if not, write to the Free |
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23 | * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, |
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24 | * MA 02110-1301 USA |
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25 | * |
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26 | * Alternatively, |
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27 | * |
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28 | * b) Redistribution and use in source and binary forms, with or |
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29 | * without modification, are permitted provided that the following |
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30 | * conditions are met: |
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31 | * |
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32 | * 1. Redistributions of source code must retain the above |
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33 | * copyright notice, this list of conditions and the following |
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34 | * disclaimer. |
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35 | * 2. Redistributions in binary form must reproduce the above |
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36 | * copyright notice, this list of conditions and the following |
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37 | * disclaimer in the documentation and/or other materials |
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38 | * provided with the distribution. |
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39 | * |
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40 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
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41 | * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
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42 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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43 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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44 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
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45 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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46 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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47 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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48 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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49 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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50 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
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51 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
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52 | * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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53 | */ |
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54 | |
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55 | #ifndef __ASSEMBLY__ |
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56 | |
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57 | struct fdt_header { |
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58 | fdt32_t magic; /* magic word FDT_MAGIC */ |
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59 | fdt32_t totalsize; /* total size of DT block */ |
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60 | fdt32_t off_dt_struct; /* offset to structure */ |
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61 | fdt32_t off_dt_strings; /* offset to strings */ |
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62 | fdt32_t off_mem_rsvmap; /* offset to memory reserve map */ |
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63 | fdt32_t version; /* format version */ |
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64 | fdt32_t last_comp_version; /* last compatible version */ |
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65 | |
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66 | /* version 2 fields below */ |
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67 | fdt32_t boot_cpuid_phys; /* Which physical CPU id we're |
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68 | booting on */ |
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69 | /* version 3 fields below */ |
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70 | fdt32_t size_dt_strings; /* size of the strings block */ |
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71 | |
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72 | /* version 17 fields below */ |
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73 | fdt32_t size_dt_struct; /* size of the structure block */ |
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74 | }; |
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75 | |
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76 | struct fdt_reserve_entry { |
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77 | fdt64_t address; |
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78 | fdt64_t size; |
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79 | }; |
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80 | |
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81 | struct fdt_node_header { |
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82 | fdt32_t tag; |
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83 | char name[0]; |
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84 | }; |
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85 | |
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86 | struct fdt_property { |
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87 | fdt32_t tag; |
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88 | fdt32_t len; |
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89 | fdt32_t nameoff; |
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90 | char data[0]; |
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91 | }; |
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92 | |
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93 | #endif /* !__ASSEMBLY */ |
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94 | |
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95 | #define FDT_MAGIC 0xd00dfeed /* 4: version, 4: total size */ |
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96 | #define FDT_TAGSIZE sizeof(fdt32_t) |
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97 | |
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98 | #define FDT_BEGIN_NODE 0x1 /* Start node: full name */ |
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99 | #define FDT_END_NODE 0x2 /* End node */ |
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100 | #define FDT_PROP 0x3 /* Property: name off, |
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101 | size, content */ |
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102 | #define FDT_NOP 0x4 /* nop */ |
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103 | #define FDT_END 0x9 |
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104 | |
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105 | #define FDT_V1_SIZE (7*sizeof(fdt32_t)) |
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106 | #define FDT_V2_SIZE (FDT_V1_SIZE + sizeof(fdt32_t)) |
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107 | #define FDT_V3_SIZE (FDT_V2_SIZE + sizeof(fdt32_t)) |
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108 | #define FDT_V16_SIZE FDT_V3_SIZE |
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109 | #define FDT_V17_SIZE (FDT_V16_SIZE + sizeof(fdt32_t)) |
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110 | |
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111 | #endif /* FDT_H */ |
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