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authorDavid Gibson <david@gibson.dropbear.id.au>2009-04-30 01:25:53 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-05-02 19:52:26 -0400
commit9fffb55f66127b52c937ede5196ebfa0c0d50bce (patch)
tree11664fb82734ba8dcde9556b8d47e780451a740a /scripts/dtc/libfdt/libfdt_internal.h
parentafc1e702e8e8355faa712d4e90d9afe26a4995a5 (diff)
Move dtc and libfdt sources from arch/powerpc/boot to scripts/dtc
The powerpc kernel always requires an Open Firmware like device tree to supply device information. On systems without OF, this comes from a flattened device tree blob. This blob is usually generated by dtc, a tool which compiles a text description of the device tree into the flattened format used by the kernel. Sometimes, the bootwrapper makes small changes to the pre-compiled device tree blob (e.g. filling in the size of RAM). To do this it uses the libfdt library. Because these are only used on powerpc, the code for both these tools is included under arch/powerpc/boot (these were imported and are periodically updated from the upstream dtc tree). However, the microblaze architecture, currently being prepared for merging to mainline also uses dtc to produce device tree blobs. A few other archs have also mentioned some interest in using dtc. Therefore, this patch moves dtc and libfdt from arch/powerpc into scripts, where it can be used by any architecture. The vast bulk of this patch is a literal move, the rest is adjusting the various Makefiles to use dtc and libfdt correctly from their new locations. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts/dtc/libfdt/libfdt_internal.h')
-rw-r--r--scripts/dtc/libfdt/libfdt_internal.h95
1 files changed, 95 insertions, 0 deletions
diff --git a/scripts/dtc/libfdt/libfdt_internal.h b/scripts/dtc/libfdt/libfdt_internal.h
new file mode 100644
index 000000000000..46eb93e4af5c
--- /dev/null
+++ b/scripts/dtc/libfdt/libfdt_internal.h
@@ -0,0 +1,95 @@
1#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 *
7 * libfdt is dual licensed: you can use it either under the terms of
8 * the GPL, or the BSD license, at your option.
9 *
10 * 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.
14 *
15 * 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.
52 */
53#include <fdt.h>
54
55#define FDT_ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1))
56#define FDT_TAGALIGN(x) (FDT_ALIGN((x), FDT_TAGSIZE))
57
58#define FDT_CHECK_HEADER(fdt) \
59 { \
60 int err; \
61 if ((err = fdt_check_header(fdt)) != 0) \
62 return err; \
63 }
64
65uint32_t _fdt_next_tag(const void *fdt, int startoffset, int *nextoffset);
66int _fdt_check_node_offset(const void *fdt, int offset);
67const char *_fdt_find_string(const char *strtab, int tabsize, const char *s);
68int _fdt_node_end_offset(void *fdt, int nodeoffset);
69
70static inline const void *_fdt_offset_ptr(const void *fdt, int offset)
71{
72 return (const char *)fdt + fdt_off_dt_struct(fdt) + offset;
73}
74
75static inline void *_fdt_offset_ptr_w(void *fdt, int offset)
76{
77 return (void *)(uintptr_t)_fdt_offset_ptr(fdt, offset);
78}
79
80static inline const struct fdt_reserve_entry *_fdt_mem_rsv(const void *fdt, int n)
81{
82 const struct fdt_reserve_entry *rsv_table =
83 (const struct fdt_reserve_entry *)
84 ((const char *)fdt + fdt_off_mem_rsvmap(fdt));
85
86 return rsv_table + n;
87}
88static inline struct fdt_reserve_entry *_fdt_mem_rsv_w(void *fdt, int n)
89{
90 return (void *)(uintptr_t)_fdt_mem_rsv(fdt, n);
91}
92
93#define FDT_SW_MAGIC (~FDT_MAGIC)
94
95#endif /* _LIBFDT_INTERNAL_H */