Commit | Line | Data |
---|---|---|
ed95d745 DG |
1 | #ifndef _LIBFDT_ENV_H |
2 | #define _LIBFDT_ENV_H | |
47605971 RH |
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 | */ | |
ed95d745 DG |
54 | |
55 | #include <stddef.h> | |
56 | #include <stdint.h> | |
57 | #include <string.h> | |
58 | ||
47605971 RH |
59 | #ifdef __CHECKER__ |
60 | #define __force __attribute__((force)) | |
61 | #define __bitwise __attribute__((bitwise)) | |
62 | #else | |
63 | #define __force | |
64 | #define __bitwise | |
65 | #endif | |
66 | ||
67 | typedef uint16_t __bitwise fdt16_t; | |
68 | typedef uint32_t __bitwise fdt32_t; | |
69 | typedef uint64_t __bitwise fdt64_t; | |
70 | ||
71 | #define EXTRACT_BYTE(x, n) ((unsigned long long)((uint8_t *)&x)[n]) | |
72 | #define CPU_TO_FDT16(x) ((EXTRACT_BYTE(x, 0) << 8) | EXTRACT_BYTE(x, 1)) | |
73 | #define CPU_TO_FDT32(x) ((EXTRACT_BYTE(x, 0) << 24) | (EXTRACT_BYTE(x, 1) << 16) | \ | |
74 | (EXTRACT_BYTE(x, 2) << 8) | EXTRACT_BYTE(x, 3)) | |
75 | #define CPU_TO_FDT64(x) ((EXTRACT_BYTE(x, 0) << 56) | (EXTRACT_BYTE(x, 1) << 48) | \ | |
76 | (EXTRACT_BYTE(x, 2) << 40) | (EXTRACT_BYTE(x, 3) << 32) | \ | |
77 | (EXTRACT_BYTE(x, 4) << 24) | (EXTRACT_BYTE(x, 5) << 16) | \ | |
78 | (EXTRACT_BYTE(x, 6) << 8) | EXTRACT_BYTE(x, 7)) | |
79 | ||
80 | static inline uint16_t fdt16_to_cpu(fdt16_t x) | |
81 | { | |
82 | return (__force uint16_t)CPU_TO_FDT16(x); | |
83 | } | |
84 | static inline fdt16_t cpu_to_fdt16(uint16_t x) | |
cd296721 | 85 | { |
47605971 | 86 | return (__force fdt16_t)CPU_TO_FDT16(x); |
cd296721 | 87 | } |
cd296721 | 88 | |
47605971 | 89 | static inline uint32_t fdt32_to_cpu(fdt32_t x) |
ed95d745 | 90 | { |
47605971 RH |
91 | return (__force uint32_t)CPU_TO_FDT32(x); |
92 | } | |
93 | static inline fdt32_t cpu_to_fdt32(uint32_t x) | |
94 | { | |
95 | return (__force fdt32_t)CPU_TO_FDT32(x); | |
ed95d745 | 96 | } |
ed95d745 | 97 | |
47605971 RH |
98 | static inline uint64_t fdt64_to_cpu(fdt64_t x) |
99 | { | |
100 | return (__force uint64_t)CPU_TO_FDT64(x); | |
101 | } | |
102 | static inline fdt64_t cpu_to_fdt64(uint64_t x) | |
ed95d745 | 103 | { |
47605971 | 104 | return (__force fdt64_t)CPU_TO_FDT64(x); |
ed95d745 | 105 | } |
47605971 RH |
106 | #undef CPU_TO_FDT64 |
107 | #undef CPU_TO_FDT32 | |
108 | #undef CPU_TO_FDT16 | |
cd296721 | 109 | #undef EXTRACT_BYTE |
ed95d745 DG |
110 | |
111 | #endif /* _LIBFDT_ENV_H */ |