/* $NetBSD: fdt_addresses.c,v 1.1.1.2 2017/06/08 15:53:11 skrll Exp $ */ /* * libfdt - Flat Device Tree manipulation * Copyright (C) 2014 David Gibson * * 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 #include #include "libfdt_internal.h" int fdt_address_cells(const void *fdt, int nodeoffset) { const fdt32_t *ac; int val; int len; ac = fdt_getprop(fdt, nodeoffset, "#address-cells", &len); if (!ac) return 2; if (len != sizeof(*ac)) return -FDT_ERR_BADNCELLS; val = fdt32_to_cpu(*ac); if ((val <= 0) || (val > FDT_MAX_NCELLS)) return -FDT_ERR_BADNCELLS; return val; } int fdt_size_cells(const void *fdt, int nodeoffset) { const fdt32_t *sc; int val; int len; sc = fdt_getprop(fdt, nodeoffset, "#size-cells", &len); if (!sc) return 2; if (len != sizeof(*sc)) return -FDT_ERR_BADNCELLS; val = fdt32_to_cpu(*sc); if ((val < 0) || (val > FDT_MAX_NCELLS)) return -FDT_ERR_BADNCELLS; return val; }