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      1 /*	$NetBSD: libfdt_internal.h,v 1.1.1.3 2019/12/22 12:30:37 skrll Exp $	*/
      2 
      3 /* SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause) */
      4 #ifndef LIBFDT_INTERNAL_H
      5 #define LIBFDT_INTERNAL_H
      6 /*
      7  * libfdt - Flat Device Tree manipulation
      8  * Copyright (C) 2006 David Gibson, IBM Corporation.
      9  */
     10 #include <fdt.h>
     11 
     12 #define FDT_ALIGN(x, a)		(((x) + (a) - 1) & ~((a) - 1))
     13 #define FDT_TAGALIGN(x)		(FDT_ALIGN((x), FDT_TAGSIZE))
     14 
     15 int fdt_ro_probe_(const void *fdt);
     16 #define FDT_RO_PROBE(fdt)					\
     17 	{							\
     18 		int totalsize_;					\
     19 		if ((totalsize_ = fdt_ro_probe_(fdt)) < 0)	\
     20 			return totalsize_;			\
     21 	}
     22 
     23 int fdt_check_node_offset_(const void *fdt, int offset);
     24 int fdt_check_prop_offset_(const void *fdt, int offset);
     25 const char *fdt_find_string_(const char *strtab, int tabsize, const char *s);
     26 int fdt_node_end_offset_(void *fdt, int nodeoffset);
     27 
     28 static inline const void *fdt_offset_ptr_(const void *fdt, int offset)
     29 {
     30 	return (const char *)fdt + fdt_off_dt_struct(fdt) + offset;
     31 }
     32 
     33 static inline void *fdt_offset_ptr_w_(void *fdt, int offset)
     34 {
     35 	return (void *)(uintptr_t)fdt_offset_ptr_(fdt, offset);
     36 }
     37 
     38 static inline const struct fdt_reserve_entry *fdt_mem_rsv_(const void *fdt, int n)
     39 {
     40 	const struct fdt_reserve_entry *rsv_table =
     41 		(const struct fdt_reserve_entry *)
     42 		((const char *)fdt + fdt_off_mem_rsvmap(fdt));
     43 
     44 	return rsv_table + n;
     45 }
     46 static inline struct fdt_reserve_entry *fdt_mem_rsv_w_(void *fdt, int n)
     47 {
     48 	return (void *)(uintptr_t)fdt_mem_rsv_(fdt, n);
     49 }
     50 
     51 #define FDT_SW_MAGIC		(~FDT_MAGIC)
     52 
     53 #endif /* LIBFDT_INTERNAL_H */
     54