blob: 46eb93e4af5c471ecac7bc470065c11f6ae6f9e6 [file] [log] [blame]
Gerald Van Baren7cd5da02007-03-31 11:59:59 -04001#ifndef _LIBFDT_INTERNAL_H
2#define _LIBFDT_INTERNAL_H
3/*
4 * libfdt - Flat Device Tree manipulation
5 * Copyright (C) 2006 David Gibson, IBM Corporation.
6 *
Kumar Gala8d04f022007-10-24 11:04:22 -05007 * libfdt is dual licensed: you can use it either under the terms of
8 * the GPL, or the BSD license, at your option.
Gerald Van Baren7cd5da02007-03-31 11:59:59 -04009 *
Kumar Gala8d04f022007-10-24 11:04:22 -050010 * a) This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of the
13 * License, or (at your option) any later version.
Gerald Van Baren7cd5da02007-03-31 11:59:59 -040014 *
Kumar Gala8d04f022007-10-24 11:04:22 -050015 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public
21 * License along with this library; if not, write to the Free
22 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
23 * MA 02110-1301 USA
24 *
25 * Alternatively,
26 *
27 * b) Redistribution and use in source and binary forms, with or
28 * without modification, are permitted provided that the following
29 * conditions are met:
30 *
31 * 1. Redistributions of source code must retain the above
32 * copyright notice, this list of conditions and the following
33 * disclaimer.
34 * 2. Redistributions in binary form must reproduce the above
35 * copyright notice, this list of conditions and the following
36 * disclaimer in the documentation and/or other materials
37 * provided with the distribution.
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
40 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
41 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
42 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
43 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
44 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
49 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
50 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
51 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Gerald Van Baren7cd5da02007-03-31 11:59:59 -040052 */
53#include <fdt.h>
54
David Gibsonfc7758e2008-07-09 14:10:24 +100055#define FDT_ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1))
56#define FDT_TAGALIGN(x) (FDT_ALIGN((x), FDT_TAGSIZE))
Gerald Van Baren7cd5da02007-03-31 11:59:59 -040057
David Gibsonfc7758e2008-07-09 14:10:24 +100058#define FDT_CHECK_HEADER(fdt) \
David Gibsond0ccb9b2008-02-18 18:06:31 +110059 { \
60 int err; \
61 if ((err = fdt_check_header(fdt)) != 0) \
62 return err; \
63 }
64
Kumar Gala8d04f022007-10-24 11:04:22 -050065uint32_t _fdt_next_tag(const void *fdt, int startoffset, int *nextoffset);
David Gibson2f08bfa2008-05-20 17:19:11 +100066int _fdt_check_node_offset(const void *fdt, int offset);
Gerald Van Baren7cd5da02007-03-31 11:59:59 -040067const char *_fdt_find_string(const char *strtab, int tabsize, const char *s);
68int _fdt_node_end_offset(void *fdt, int nodeoffset);
69
Kumar Gala8d04f022007-10-24 11:04:22 -050070static inline const void *_fdt_offset_ptr(const void *fdt, int offset)
Gerald Van Baren7cd5da02007-03-31 11:59:59 -040071{
David Gibsonef4e8ce2008-07-07 10:10:48 +100072 return (const char *)fdt + fdt_off_dt_struct(fdt) + offset;
Kumar Gala8d04f022007-10-24 11:04:22 -050073}
74
75static inline void *_fdt_offset_ptr_w(void *fdt, int offset)
76{
David Gibsonc6683022008-07-07 10:14:15 +100077 return (void *)(uintptr_t)_fdt_offset_ptr(fdt, offset);
Kumar Gala8d04f022007-10-24 11:04:22 -050078}
79
80static inline const struct fdt_reserve_entry *_fdt_mem_rsv(const void *fdt, int n)
81{
David Gibsonc6683022008-07-07 10:14:15 +100082 const struct fdt_reserve_entry *rsv_table =
83 (const struct fdt_reserve_entry *)
David Gibsonef4e8ce2008-07-07 10:10:48 +100084 ((const char *)fdt + fdt_off_mem_rsvmap(fdt));
Kumar Gala8d04f022007-10-24 11:04:22 -050085
86 return rsv_table + n;
87}
88static inline struct fdt_reserve_entry *_fdt_mem_rsv_w(void *fdt, int n)
89{
David Gibsonc6683022008-07-07 10:14:15 +100090 return (void *)(uintptr_t)_fdt_mem_rsv(fdt, n);
Gerald Van Baren7cd5da02007-03-31 11:59:59 -040091}
92
David Gibsonfc7758e2008-07-09 14:10:24 +100093#define FDT_SW_MAGIC (~FDT_MAGIC)
Gerald Van Baren7cd5da02007-03-31 11:59:59 -040094
95#endif /* _LIBFDT_INTERNAL_H */