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/*
* 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_namelen_partial (
void *fdt,
int nodeoffset,
const char *name,
int namelen,
uint32_t idx,
const void *val,
int len
)
{
void *propval;
int proplen;
propval = fdt_getprop_namelen_w (
fdt,
nodeoffset,
name,
namelen,
&proplen
);
if (!propval) {
return proplen;
}
if (proplen < (len + idx)) {
return -FDT_ERR_NOSPACE;
}
memcpy ((char *)propval + idx, val, len);
return 0;
}
int
fdt_setprop_inplace (
void *fdt,
int nodeoffset,
const char *name,
const void *val,
int len
)
{
const void *propval;
int proplen;
propval = fdt_getprop (fdt, nodeoffset, name, &proplen);
if (!propval) {
return proplen;
}
if (proplen != len) {
return -FDT_ERR_NOSPACE;
}
return fdt_setprop_inplace_namelen_partial (
fdt,
nodeoffset,
name,
strlen (name),
0,
val,
len
);
}
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;
}
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