scripts/dtc/libfdt/libfdt_env.h

   1 #ifndef _LIBFDT_ENV_H
   2 #define _LIBFDT_ENV_H
   3
   4 #include <stddef.h>
   5 #include <stdint.h>
   6 #include <string.h>
   7
   8 #define EXTRACT_BYTE(n) ((unsigned long long)((uint8_t *)&x)[n])
   9 static inline uint16_t fdt16_to_cpu(uint16_t x)
  10 {
  11         return (EXTRACT_BYTE(0) << 8) | EXTRACT_BYTE(1);
  12 }
  13 #define cpu_to_fdt16(x) fdt16_to_cpu(x)
  14
  15 static inline uint32_t fdt32_to_cpu(uint32_t x)
  16 {
  17         return (EXTRACT_BYTE(0) << 24) | (EXTRACT_BYTE(1) << 16) | (EXTRACT_BYTE(2) << 8) | EXTRACT_BYTE(3);
  18 }
  19 #define cpu_to_fdt32(x) fdt32_to_cpu(x)
  20
  21 static inline uint64_t fdt64_to_cpu(uint64_t x)
  22 {
  23         return (EXTRACT_BYTE(0) << 56) | (EXTRACT_BYTE(1) << 48) | (EXTRACT_BYTE(2) << 40) | (EXTRACT_BYTE(3) << 32)
  24                 | (EXTRACT_BYTE(4) << 24) | (EXTRACT_BYTE(5) << 16) | (EXTRACT_BYTE(6) << 8) | EXTRACT_BYTE(7);
  25 }
  26 #define cpu_to_fdt64(x) fdt64_to_cpu(x)
  27 #undef EXTRACT_BYTE
  28
  29 #endif /* _LIBFDT_ENV_H */