1 | #ifndef _LIBFDT_ENV_H |
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2 | #define _LIBFDT_ENV_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 | #include <stddef.h> |
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56 | #include <stdint.h> |
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57 | #include <stdlib.h> |
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58 | #include <string.h> |
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59 | |
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60 | #ifdef __CHECKER__ |
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61 | #define FDT_FORCE __attribute__((force)) |
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62 | #define FDT_BITWISE __attribute__((bitwise)) |
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63 | #else |
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64 | #define FDT_FORCE |
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65 | #define FDT_BITWISE |
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66 | #endif |
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67 | |
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68 | typedef uint16_t FDT_BITWISE fdt16_t; |
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69 | typedef uint32_t FDT_BITWISE fdt32_t; |
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70 | typedef uint64_t FDT_BITWISE fdt64_t; |
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71 | |
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72 | #define EXTRACT_BYTE(x, n) ((unsigned long long)((uint8_t *)&x)[n]) |
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73 | #define CPU_TO_FDT16(x) ((EXTRACT_BYTE(x, 0) << 8) | EXTRACT_BYTE(x, 1)) |
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74 | #define CPU_TO_FDT32(x) ((EXTRACT_BYTE(x, 0) << 24) | (EXTRACT_BYTE(x, 1) << 16) | \ |
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75 | (EXTRACT_BYTE(x, 2) << 8) | EXTRACT_BYTE(x, 3)) |
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76 | #define CPU_TO_FDT64(x) ((EXTRACT_BYTE(x, 0) << 56) | (EXTRACT_BYTE(x, 1) << 48) | \ |
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77 | (EXTRACT_BYTE(x, 2) << 40) | (EXTRACT_BYTE(x, 3) << 32) | \ |
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78 | (EXTRACT_BYTE(x, 4) << 24) | (EXTRACT_BYTE(x, 5) << 16) | \ |
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79 | (EXTRACT_BYTE(x, 6) << 8) | EXTRACT_BYTE(x, 7)) |
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80 | |
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81 | static inline uint16_t fdt16_to_cpu(fdt16_t x) |
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82 | { |
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83 | return (FDT_FORCE uint16_t)CPU_TO_FDT16(x); |
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84 | } |
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85 | static inline fdt16_t cpu_to_fdt16(uint16_t x) |
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86 | { |
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87 | return (FDT_FORCE fdt16_t)CPU_TO_FDT16(x); |
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88 | } |
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89 | |
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90 | static inline uint32_t fdt32_to_cpu(fdt32_t x) |
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91 | { |
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92 | return (FDT_FORCE uint32_t)CPU_TO_FDT32(x); |
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93 | } |
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94 | static inline fdt32_t cpu_to_fdt32(uint32_t x) |
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95 | { |
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96 | return (FDT_FORCE fdt32_t)CPU_TO_FDT32(x); |
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97 | } |
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98 | |
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99 | static inline uint64_t fdt64_to_cpu(fdt64_t x) |
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100 | { |
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101 | return (FDT_FORCE uint64_t)CPU_TO_FDT64(x); |
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102 | } |
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103 | static inline fdt64_t cpu_to_fdt64(uint64_t x) |
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104 | { |
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105 | return (FDT_FORCE fdt64_t)CPU_TO_FDT64(x); |
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106 | } |
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107 | #undef CPU_TO_FDT64 |
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108 | #undef CPU_TO_FDT32 |
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109 | #undef CPU_TO_FDT16 |
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110 | #undef EXTRACT_BYTE |
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111 | |
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112 | #endif /* _LIBFDT_ENV_H */ |
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