aa7254d9cb
According to the device tree specification, the default value for #size-cells is 1, but fdt_size_cells() was returning 2 if this property was not present. This patch also makes fdt_address_cells() and fdt_size_cells() conform to the behaviour documented in libfdt.h. The defaults are only returned if fdt_getprop() returns -FDT_ERR_NOTFOUND, otherwise the actual error is returned. Signed-off-by: John Clarke <johnc@kirriwa.net>
62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
/*
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* libfdt - Flat Device Tree manipulation
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* Testcase for #address-cells and #size-cells handling
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* Copyright (C) 2014 David Gibson, <david@gibson.dropbear.id.au>
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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 <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdint.h>
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#include <libfdt.h>
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#include "tests.h"
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#include "testdata.h"
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static void check_node(const void *fdt, const char *path, int ac, int sc)
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{
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int offset;
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int xac, xsc;
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offset = fdt_path_offset(fdt, path);
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if (offset < 0)
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FAIL("Couldn't find path %s", path);
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xac = fdt_address_cells(fdt, offset);
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xsc = fdt_size_cells(fdt, offset);
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if (xac != ac)
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FAIL("Address cells for %s is %d instead of %d\n",
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path, xac, ac);
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if (xsc != sc)
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FAIL("Size cells for %s is %d instead of %d\n",
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path, xsc, sc);
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}
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int main(int argc, char *argv[])
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{
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void *fdt;
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if (argc != 2)
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CONFIG("Usage: %s <dtb file>\n", argv[0]);
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test_init(argc, argv);
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fdt = load_blob(argv[1]);
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check_node(fdt, "/", 2, 1);
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PASS();
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}
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