/*
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* libfdt - Flat Device Tree manipulation
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* Testcase for DT overlays()
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* Copyright (C) 2016 Free Electrons
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* Copyright (C) 2016 NextThing Co.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1 of
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* the 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, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdio.h>
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#include <libfdt.h>
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#include "tests.h"
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#define CHECK(code, expected) \
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{ \
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err = (code); \
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if (err != expected) \
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FAIL(#code ": %s", fdt_strerror(err)); \
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}
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/* 4k ought to be enough for anybody */
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#define FDT_COPY_SIZE (4 * 1024)
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static void *open_dt(char *path)
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{
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void *dt, *copy;
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int err;
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dt = load_blob(path);
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copy = xmalloc(FDT_COPY_SIZE);
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/*
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* Resize our DTs to 4k so that we have room to operate on
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*/
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CHECK(fdt_open_into(dt, copy, FDT_COPY_SIZE), 0);
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return copy;
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}
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int main(int argc, char *argv[])
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{
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void *fdt_base, *fdt_overlay;
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int err;
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test_init(argc, argv);
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if (argc != 3)
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CONFIG("Usage: %s <base dtb> <overlay dtb>", argv[0]);
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fdt_base = open_dt(argv[1]);
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fdt_overlay = open_dt(argv[2]);
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/* Apply the overlay */
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CHECK(fdt_overlay_apply(fdt_base, fdt_overlay), -FDT_ERR_BADOVERLAY);
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PASS();
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}
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