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/*
* libfdt - Flat Device Tree manipulation
* Copyright (C) 2006 David Gibson, IBM Corporation.
*
* 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 <fdt.h>
#include <libfdt.h>
#include "libfdt_env.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;
}
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