node_offset_by_compatible.c revision 1.1.1.2
1/* $NetBSD: node_offset_by_compatible.c,v 1.1.1.2 2017/06/08 15:59:27 skrll Exp $ */ 2 3/* 4 * libfdt - Flat Device Tree manipulation 5 * Testcase for fdt_node_offset_by_compatible() 6 * Copyright (C) 2006 David Gibson, IBM Corporation. 7 * 8 * This library is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public License 10 * as published by the Free Software Foundation; either version 2.1 of 11 * the License, or (at your option) any later version. 12 * 13 * This library is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with this library; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22#include <stdlib.h> 23#include <stdio.h> 24#include <string.h> 25#include <stdint.h> 26#include <stdarg.h> 27 28#include <libfdt.h> 29 30#include "tests.h" 31#include "testdata.h" 32 33static void check_search(void *fdt, const char *compat, ...) 34{ 35 va_list ap; 36 int offset = -1, target; 37 38 va_start(ap, compat); 39 do { 40 target = va_arg(ap, int); 41 verbose_printf("Searching (target = %d): %d ->", 42 target, offset); 43 offset = fdt_node_offset_by_compatible(fdt, offset, compat); 44 verbose_printf("%d\n", offset); 45 46 if (offset != target) 47 FAIL("fdt_node_offset_by_compatible(%s) returns %d " 48 "instead of %d", compat, offset, target); 49 } while (target >= 0); 50 51 va_end(ap); 52} 53 54int main(int argc, char *argv[]) 55{ 56 void *fdt; 57 int subnode1_offset, subnode2_offset; 58 int subsubnode1_offset, subsubnode2_offset; 59 60 test_init(argc, argv); 61 fdt = load_blob_arg(argc, argv); 62 63 subnode1_offset = fdt_path_offset(fdt, "/subnode@1"); 64 subnode2_offset = fdt_path_offset(fdt, "/subnode@2"); 65 subsubnode1_offset = fdt_path_offset(fdt, "/subnode@1/subsubnode"); 66 subsubnode2_offset = fdt_path_offset(fdt, "/subnode@2/subsubnode@0"); 67 68 if ((subnode1_offset < 0) || (subnode2_offset < 0) 69 || (subsubnode1_offset < 0) || (subsubnode2_offset < 0)) 70 FAIL("Can't find required nodes"); 71 72 check_search(fdt, "test_tree1", 0, -FDT_ERR_NOTFOUND); 73 check_search(fdt, "subnode1", subnode1_offset, -FDT_ERR_NOTFOUND); 74 check_search(fdt, "subsubnode1", subsubnode1_offset, -FDT_ERR_NOTFOUND); 75 check_search(fdt, "subsubnode2", subsubnode2_offset, -FDT_ERR_NOTFOUND); 76 /* Eek.. HACK to make this work whatever the order in the 77 * example tree */ 78 if (subsubnode1_offset < subsubnode2_offset) 79 check_search(fdt, "subsubnode", subsubnode1_offset, 80 subsubnode2_offset, -FDT_ERR_NOTFOUND); 81 else 82 check_search(fdt, "subsubnode", subsubnode2_offset, 83 subsubnode1_offset, -FDT_ERR_NOTFOUND); 84 check_search(fdt, "nothing-like-this", -FDT_ERR_NOTFOUND); 85 86 PASS(); 87} 88