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
fdt_offset_ptr_(const void * fdt,int offset)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
fdt_offset_ptr_w_(void * fdt,int offset)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
fdt_mem_rsv_(const void * fdt,int n)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 }
fdt_mem_rsv_w_(void * fdt,int n)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