| 1 |
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| 2 | #ifndef LIBFDT_ENV_H
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| 3 | #define LIBFDT_ENV_H
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| 4 | |
| 5 | * libfdt - Flat Device Tree manipulation
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| 6 | * Copyright (C) 2006 David Gibson, IBM Corporation.
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| 7 | * Copyright 2012 Kim Phillips, Freescale Semiconductor.
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| 8 |
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| 9 |
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| 10 | #include <stdbool.h>
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| 11 | #include <stddef.h>
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| 12 | #include <stdint.h>
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| 13 | #include <stdlib.h>
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| 14 | #include <string.h>
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| 15 | #include <limits.h>
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| 16 |
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| 17 | #ifdef __CHECKER__
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| 18 | #define FDT_FORCE __attribute__((force))
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| 19 | #define FDT_BITWISE __attribute__((bitwise))
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| 20 | #else
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| 21 | #define FDT_FORCE
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| 22 | #define FDT_BITWISE
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| 23 | #endif
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| 24 |
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| 25 | typedef uint16_t FDT_BITWISE fdt16_t;
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| 26 | typedef uint32_t FDT_BITWISE fdt32_t;
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| 27 | typedef uint64_t FDT_BITWISE fdt64_t;
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| 28 |
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| 29 | #define EXTRACT_BYTE(x, n) ((unsigned long long)((uint8_t *)&x)[n])
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| 30 | #define CPU_TO_FDT16(x) ((EXTRACT_BYTE(x, 0) << 8) | EXTRACT_BYTE(x, 1))
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| 31 | #define CPU_TO_FDT32(x) ((EXTRACT_BYTE(x, 0) << 24) | (EXTRACT_BYTE(x, 1) << 16) | \
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| 32 | (EXTRACT_BYTE(x, 2) << 8) | EXTRACT_BYTE(x, 3))
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| 33 | #define CPU_TO_FDT64(x) ((EXTRACT_BYTE(x, 0) << 56) | (EXTRACT_BYTE(x, 1) << 48) | \
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| 34 | (EXTRACT_BYTE(x, 2) << 40) | (EXTRACT_BYTE(x, 3) << 32) | \
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| 35 | (EXTRACT_BYTE(x, 4) << 24) | (EXTRACT_BYTE(x, 5) << 16) | \
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| 36 | (EXTRACT_BYTE(x, 6) << 8) | EXTRACT_BYTE(x, 7))
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| 37 |
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| 38 | static inline uint16_t fdt16_to_cpu(fdt16_t x)
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| 39 | {
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| 40 | return (FDT_FORCE uint16_t)CPU_TO_FDT16(x);
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| 41 | }
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| 42 | static inline fdt16_t cpu_to_fdt16(uint16_t x)
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| 43 | {
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| 44 | return (FDT_FORCE fdt16_t)CPU_TO_FDT16(x);
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| 45 | }
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| 46 |
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| 47 | static inline uint32_t fdt32_to_cpu(fdt32_t x)
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| 48 | {
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| 49 | return (FDT_FORCE uint32_t)CPU_TO_FDT32(x);
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| 50 | }
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| 51 | static inline fdt32_t cpu_to_fdt32(uint32_t x)
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| 52 | {
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| 53 | return (FDT_FORCE fdt32_t)CPU_TO_FDT32(x);
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| 54 | }
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| 55 |
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| 56 | static inline uint64_t fdt64_to_cpu(fdt64_t x)
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| 57 | {
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| 58 | return (FDT_FORCE uint64_t)CPU_TO_FDT64(x);
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| 59 | }
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| 60 | static inline fdt64_t cpu_to_fdt64(uint64_t x)
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| 61 | {
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| 62 | return (FDT_FORCE fdt64_t)CPU_TO_FDT64(x);
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| 63 | }
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| 64 | #undef CPU_TO_FDT64
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| 65 | #undef CPU_TO_FDT32
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| 66 | #undef CPU_TO_FDT16
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| 67 | #undef EXTRACT_BYTE
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| 68 |
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| 69 | #endif
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