/* | |
* libfdt - Flat Device Tree manipulation | |
* Copyright (C) 2006 David Gibson, IBM Corporation. | |
* | |
* libfdt is dual licensed: you can use it either under the terms of | |
* the GPL, or the BSD license, at your option. | |
* | |
* a) This library is free software; you can redistribute it and/or | |
* modify it under the terms of the GNU General Public License as | |
* published by the Free Software Foundation; either version 2 of the | |
* License, or (at your option) any later version. | |
* | |
* This library is distributed in the hope that it will be useful, | |
* but WITHOUT ANY WARRANTY; without even the implied warranty of | |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
* GNU General Public License for more details. | |
* | |
* You should have received a copy of the GNU General Public | |
* License along with this library; if not, write to the Free | |
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, | |
* MA 02110-1301 USA | |
* | |
* Alternatively, | |
* | |
* b) Redistribution and use in source and binary forms, with or | |
* without modification, are permitted provided that the following | |
* conditions are met: | |
* | |
* 1. Redistributions of source code must retain the above | |
* copyright notice, this list of conditions and the following | |
* disclaimer. | |
* 2. Redistributions in binary form must reproduce the above | |
* copyright notice, this list of conditions and the following | |
* disclaimer in the documentation and/or other materials | |
* provided with the distribution. | |
* | |
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND | |
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, | |
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | |
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, | |
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
*/ | |
#include "libfdt_env.h" | |
#include <fdt.h> | |
#include <libfdt.h> | |
#include "libfdt_internal.h" | |
int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name, | |
const void *val, int len) | |
{ | |
void *propval; | |
int proplen; | |
propval = fdt_getprop_w(fdt, nodeoffset, name, &proplen); | |
if (! propval) | |
return proplen; | |
if (proplen != len) | |
return -FDT_ERR_NOSPACE; | |
memcpy(propval, val, len); | |
return 0; | |
} | |
static void _fdt_nop_region(void *start, int len) | |
{ | |
fdt32_t *p; | |
for (p = start; (char *)p < ((char *)start + len); p++) | |
*p = cpu_to_fdt32(FDT_NOP); | |
} | |
int fdt_nop_property(void *fdt, int nodeoffset, const char *name) | |
{ | |
struct fdt_property *prop; | |
int len; | |
prop = fdt_get_property_w(fdt, nodeoffset, name, &len); | |
if (! prop) | |
return len; | |
_fdt_nop_region(prop, len + sizeof(*prop)); | |
return 0; | |
} | |
int _fdt_node_end_offset(void *fdt, int offset) | |
{ | |
int depth = 0; | |
while ((offset >= 0) && (depth >= 0)) | |
offset = fdt_next_node(fdt, offset, &depth); | |
return offset; | |
} | |
int fdt_nop_node(void *fdt, int nodeoffset) | |
{ | |
int endoffset; | |
endoffset = _fdt_node_end_offset(fdt, nodeoffset); | |
if (endoffset < 0) | |
return endoffset; | |
_fdt_nop_region(fdt_offset_ptr_w(fdt, nodeoffset, 0), | |
endoffset - nodeoffset); | |
return 0; | |
} |