1 /*

     2  * libfdt - Flat Device Tree manipulation

     3  *	Testcase for fdt_node_offset_by_phandle()

     4  * Copyright (C) 2006 David Gibson, IBM Corporation.

     5  *

     6  * This library is free software; you can redistribute it and/or

     7  * modify it under the terms of the GNU Lesser General Public License

     8  * as published by the Free Software Foundation; either version 2.1 of

     9  * the License, or (at your option) any later version.

    10  *

    11  * This library is distributed in the hope that it will be useful, but

    12  * WITHOUT ANY WARRANTY; without even the implied warranty of

    13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    14  * Lesser General Public License for more details.

    15  *

    16  * You should have received a copy of the GNU Lesser General Public

    17  * License along with this library; if not, write to the Free Software

    18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

    19  */

    20 #include <stdlib.h>

    21 #include <stdio.h>

    22 #include <string.h>

    23 #include <stdint.h>

    24 #include <stdarg.h>

    25 

    26 #include <fdt.h>

    27 #include <libfdt.h>

    28 

    29 #include "tests.h"

    30 #include "testdata.h"

    31 

    32 void check_search(void *fdt, uint32_t phandle, int target)

    33 {

    34 	int offset;

    35 

    36 	offset = fdt_node_offset_by_phandle(fdt, phandle);

    37 

    38 	if (offset != target)

    39 		FAIL("fdt_node_offset_by_phandle(0x%x) returns %d "

    40 		     "instead of %d", phandle, offset, target);

    41 }

    42 

    43 int main(int argc, char *argv[])

    44 {

    45 	void *fdt;

    46 	int subnode2_offset, subsubnode2_offset;

    47 

    48 	test_init(argc, argv);

    49 	fdt = load_blob_arg(argc, argv);

    50 

    51 	subnode2_offset = fdt_path_offset(fdt, "/subnode@2");

    52 	subsubnode2_offset = fdt_path_offset(fdt, "/subnode@2/subsubnode@0");

    53 

    54 	if ((subnode2_offset < 0) || (subsubnode2_offset < 0))

    55 		FAIL("Can't find required nodes");

    56 

    57 	check_search(fdt, PHANDLE_1, subnode2_offset);

    58 	check_search(fdt, PHANDLE_2, subsubnode2_offset);

    59 	check_search(fdt, ~PHANDLE_1, -FDT_ERR_NOTFOUND);

    60 	check_search(fdt, 0, -FDT_ERR_BADPHANDLE);

    61 	check_search(fdt, -1, -FDT_ERR_BADPHANDLE);

    62 

    63 	PASS();

    64 }