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96 lines
3.1 KiB
96 lines
3.1 KiB
/* |
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* libfdt - Flat Device Tree manipulation |
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* Copyright (C) 2014 David Gibson <david@gibson.dropbear.id.au> |
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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_address_cells(const void *fdt, int nodeoffset) |
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{ |
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const fdt32_t *ac; |
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int val; |
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int len; |
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ac = fdt_getprop(fdt, nodeoffset, "#address-cells", &len); |
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if (!ac) |
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return 2; |
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if (len != sizeof(*ac)) |
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return -FDT_ERR_BADNCELLS; |
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val = fdt32_to_cpu(*ac); |
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if ((val <= 0) || (val > FDT_MAX_NCELLS)) |
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return -FDT_ERR_BADNCELLS; |
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return val; |
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} |
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int fdt_size_cells(const void *fdt, int nodeoffset) |
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{ |
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const fdt32_t *sc; |
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int val; |
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int len; |
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sc = fdt_getprop(fdt, nodeoffset, "#size-cells", &len); |
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if (!sc) |
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return 2; |
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if (len != sizeof(*sc)) |
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return -FDT_ERR_BADNCELLS; |
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val = fdt32_to_cpu(*sc); |
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if ((val < 0) || (val > FDT_MAX_NCELLS)) |
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return -FDT_ERR_BADNCELLS; |
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return val; |
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}
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