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