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libfdt_internal.h revision 1.1.1.2 
      1 /*	$NetBSD: libfdt_internal.h,v 1.1.1.2 2017/06/08 15:53:15 skrll Exp $	*/
      2 
      3 #ifndef _LIBFDT_INTERNAL_H
      4 #define _LIBFDT_INTERNAL_H
      5 /*
      6  * libfdt - Flat Device Tree manipulation
      7  * Copyright (C) 2006 David Gibson, IBM Corporation.
      8  *
      9  * libfdt is dual licensed: you can use it either under the terms of
     10  * the GPL, or the BSD license, at your option.
     11  *
     12  *  a) This library is free software; you can redistribute it and/or
     13  *     modify it under the terms of the GNU General Public License as
     14  *     published by the Free Software Foundation; either version 2 of the
     15  *     License, or (at your option) any later version.
     16  *
     17  *     This library is distributed in the hope that it will be useful,
     18  *     but WITHOUT ANY WARRANTY; without even the implied warranty of
     19  *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     20  *     GNU General Public License for more details.
     21  *
     22  *     You should have received a copy of the GNU General Public
     23  *     License along with this library; if not, write to the Free
     24  *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
     25  *     MA 02110-1301 USA
     26  *
     27  * Alternatively,
     28  *
     29  *  b) Redistribution and use in source and binary forms, with or
     30  *     without modification, are permitted provided that the following
     31  *     conditions are met:
     32  *
     33  *     1. Redistributions of source code must retain the above
     34  *        copyright notice, this list of conditions and the following
     35  *        disclaimer.
     36  *     2. Redistributions in binary form must reproduce the above
     37  *        copyright notice, this list of conditions and the following
     38  *        disclaimer in the documentation and/or other materials
     39  *        provided with the distribution.
     40  *
     41  *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
     42  *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
     43  *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     44  *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     45  *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
     46  *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     47  *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     48  *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     49  *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     50  *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     51  *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     52  *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
     53  *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     54  */
     55 #include <fdt.h>
     56 
     57 #define FDT_ALIGN(x, a)		(((x) + (a) - 1) & ~((a) - 1))
     58 #define FDT_TAGALIGN(x)		(FDT_ALIGN((x), FDT_TAGSIZE))
     59 
     60 #define FDT_CHECK_HEADER(fdt) \
     61 	{ \
     62 		int __err; \
     63 		if ((__err = fdt_check_header(fdt)) != 0) \
     64 			return __err; \
     65 	}
     66 
     67 int _fdt_check_node_offset(const void *fdt, int offset);
     68 int _fdt_check_prop_offset(const void *fdt, int offset);
     69 const char *_fdt_find_string(const char *strtab, int tabsize, const char *s);
     70 int _fdt_node_end_offset(void *fdt, int nodeoffset);
     71 
     72 static inline const void *_fdt_offset_ptr(const void *fdt, int offset)
     73 {
     74 	return (const char *)fdt + fdt_off_dt_struct(fdt) + offset;
     75 }
     76 
     77 static inline void *_fdt_offset_ptr_w(void *fdt, int offset)
     78 {
     79 	return (void *)(uintptr_t)_fdt_offset_ptr(fdt, offset);
     80 }
     81 
     82 static inline const struct fdt_reserve_entry *_fdt_mem_rsv(const void *fdt, int n)
     83 {
     84 	const struct fdt_reserve_entry *rsv_table =
     85 		(const struct fdt_reserve_entry *)
     86 		((const char *)fdt + fdt_off_mem_rsvmap(fdt));
     87 
     88 	return rsv_table + n;
     89 }
     90 static inline struct fdt_reserve_entry *_fdt_mem_rsv_w(void *fdt, int n)
     91 {
     92 	return (void *)(uintptr_t)_fdt_mem_rsv(fdt, n);
     93 }
     94 
     95 #define FDT_SW_MAGIC		(~FDT_MAGIC)
     96 
     97 #endif /* _LIBFDT_INTERNAL_H */
     98