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  • #ifndef _LIBFDT_INTERNAL_H
    #define _LIBFDT_INTERNAL_H
    /*
     * libfdt - Flat Device Tree manipulation
     * Copyright (C) 2006 David Gibson, IBM Corporation.
     *
     * This library is free software; you can redistribute it and/or
     * modify it under the terms of the GNU Lesser General Public License
     * as published by the Free Software Foundation; either version 2.1 of
     * the License, or (at your option) any later version.
     *
     * This library is distributed in the hope that it will be useful, but
     * WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     * Lesser General Public License for more details.
     *
     * You should have received a copy of the GNU Lesser General Public
     * License along with this library; if not, write to the Free Software
     * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
     */
    #include <fdt.h>
    
    #define ALIGN(x, a)	(((x) + (a) - 1) & ~((a) - 1))
    #define PALIGN(p, a)	((void *)ALIGN((unsigned long)(p), (a)))
    
    #define memeq(p, q, n)	(memcmp((p), (q), (n)) == 0)
    #define streq(p, q)	(strcmp((p), (q)) == 0)
    
    int _fdt_check_header(const void *fdt);
    const char *_fdt_find_string(const char *strtab, int tabsize, const char *s);
    int _fdt_node_end_offset(void *fdt, int nodeoffset);
    
    static inline void *_fdt_offset_ptr(const struct fdt_header *fdt, int offset)
    {
    	return (void *)fdt + fdt_off_dt_struct(fdt) + offset;
    }
    
    #define SW_MAGIC		(~FDT_MAGIC)
    
    #endif /* _LIBFDT_INTERNAL_H */