libfdt_env.h 857 B

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  1. #ifndef _LIBFDT_ENV_H
  2. #define _LIBFDT_ENV_H
  3. #include <stddef.h>
  4. #include <stdint.h>
  5. #include <string.h>
  6. #define EXTRACT_BYTE(n) ((unsigned long long)((uint8_t *)&x)[n])
  7. static inline uint16_t fdt16_to_cpu(uint16_t x)
  8. {
  9. return (EXTRACT_BYTE(0) << 8) | EXTRACT_BYTE(1);
  10. }
  11. #define cpu_to_fdt16(x) fdt16_to_cpu(x)
  12. static inline uint32_t fdt32_to_cpu(uint32_t x)
  13. {
  14. return (EXTRACT_BYTE(0) << 24) | (EXTRACT_BYTE(1) << 16) | (EXTRACT_BYTE(2) << 8) | EXTRACT_BYTE(3);
  15. }
  16. #define cpu_to_fdt32(x) fdt32_to_cpu(x)
  17. static inline uint64_t fdt64_to_cpu(uint64_t x)
  18. {
  19. return (EXTRACT_BYTE(0) << 56) | (EXTRACT_BYTE(1) << 48) | (EXTRACT_BYTE(2) << 40) | (EXTRACT_BYTE(3) << 32)
  20. | (EXTRACT_BYTE(4) << 24) | (EXTRACT_BYTE(5) << 16) | (EXTRACT_BYTE(6) << 8) | EXTRACT_BYTE(7);
  21. }
  22. #define cpu_to_fdt64(x) fdt64_to_cpu(x)
  23. #undef EXTRACT_BYTE
  24. #endif /* _LIBFDT_ENV_H */