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  • #ifndef _LIBFDT_ENV_H
    #define _LIBFDT_ENV_H
    
    #include <stddef.h>
    #include <stdint.h>
    #include <string.h>
    #include <endian.h>
    #include <byteswap.h>
    
    #if __BYTE_ORDER == __BIG_ENDIAN
    #define fdt32_to_cpu(x)		(x)
    #define cpu_to_fdt32(x)		(x)
    #define fdt64_to_cpu(x)		(x)
    #define cpu_to_fdt64(x)		(x)
    #else
    #define fdt32_to_cpu(x)		(bswap_32((x)))
    #define cpu_to_fdt32(x)		(bswap_32((x)))
    #define fdt64_to_cpu(x)		(bswap_64((x)))
    #define cpu_to_fdt64(x)		(bswap_64((x)))
    #endif
    
    #endif /* _LIBFDT_ENV_H */