2 * libfdt - Flat Device Tree manipulation
3 * Copyright (C) 2006 David Gibson, IBM Corporation.
5 * libfdt is dual licensed: you can use it either under the terms of
6 * the GPL, or the BSD license, at your option.
8 * a) This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of the
11 * License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public
19 * License along with this library; if not, write to the Free
20 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
25 * b) Redistribution and use in source and binary forms, with or
26 * without modification, are permitted provided that the following
29 * 1. Redistributions of source code must retain the above
30 * copyright notice, this list of conditions and the following
32 * 2. Redistributions in binary form must reproduce the above
33 * copyright notice, this list of conditions and the following
34 * disclaimer in the documentation and/or other materials
35 * provided with the distribution.
37 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
38 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
39 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
40 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
41 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
42 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
43 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
44 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
45 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
46 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
47 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
48 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
49 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
51 #include "libfdt_env.h"
56 #include "libfdt_internal.h"
58 int fdt_setprop_inplace_namelen_partial(void *fdt, int nodeoffset,
59 const char *name, int namelen,
60 uint32_t idx, const void *val,
66 propval = fdt_getprop_namelen_w(fdt, nodeoffset, name, namelen,
71 if (proplen < (len + idx))
72 return -FDT_ERR_NOSPACE;
74 memcpy((char *)propval + idx, val, len);
78 int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
79 const void *val, int len)
84 propval = fdt_getprop(fdt, nodeoffset, name, &proplen);
89 return -FDT_ERR_NOSPACE;
91 return fdt_setprop_inplace_namelen_partial(fdt, nodeoffset, name,
96 static void fdt_nop_region_(void *start, int len)
100 for (p = start; (char *)p < ((char *)start + len); p++)
101 *p = cpu_to_fdt32(FDT_NOP);
104 int fdt_nop_property(void *fdt, int nodeoffset, const char *name)
106 struct fdt_property *prop;
109 prop = fdt_get_property_w(fdt, nodeoffset, name, &len);
113 fdt_nop_region_(prop, len + sizeof(*prop));
118 int fdt_node_end_offset_(void *fdt, int offset)
122 while ((offset >= 0) && (depth >= 0))
123 offset = fdt_next_node(fdt, offset, &depth);
128 int fdt_nop_node(void *fdt, int nodeoffset)
132 endoffset = fdt_node_end_offset_(fdt, nodeoffset);
136 fdt_nop_region_(fdt_offset_ptr_w(fdt, nodeoffset, 0),
137 endoffset - nodeoffset);