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