From a099239015eb5b352ba3afdf4d0f4fdbfbaec4d0 Mon Sep 17 00:00:00 2001 From: Pankaj Bansal Date: Fri, 5 Jan 2018 16:47:37 +0530 Subject: EmbeddedPkg/FdtLib: Update FdtLib to v1.4.5 Update the FdtLib so that new APIs provided by FdtLib like fdt_address_cells, fdt_size_cells etc. can be used. Reference code: https://git.kernel.org/pub/scm/utils/dtc/dtc.git/tree/libfdt?h=v1.4.5 Cc: Leif Lindholm Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Pankaj Bansal Reviewed-by: Ard Biesheuvel --- EmbeddedPkg/Library/FdtLib/fdt_addresses.c | 96 ++++++++++++++++++++++++++++++ 1 file changed, 96 insertions(+) create mode 100644 EmbeddedPkg/Library/FdtLib/fdt_addresses.c (limited to 'EmbeddedPkg/Library/FdtLib/fdt_addresses.c') diff --git a/EmbeddedPkg/Library/FdtLib/fdt_addresses.c b/EmbeddedPkg/Library/FdtLib/fdt_addresses.c new file mode 100644 index 0000000000..f48da28f06 --- /dev/null +++ b/EmbeddedPkg/Library/FdtLib/fdt_addresses.c @@ -0,0 +1,96 @@ +/* + * 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; +} -- cgit v1.2.3