node_offset_by_compatible.c revision 1.1.1.3
1/* $NetBSD: node_offset_by_compatible.c,v 1.1.1.3 2019/12/22 12:34:06 skrll Exp $ */ 2 3// SPDX-License-Identifier: LGPL-2.1-or-later 4/* 5 * libfdt - Flat Device Tree manipulation 6 * Testcase for fdt_node_offset_by_compatible() 7 * Copyright (C) 2006 David Gibson, IBM Corporation. 8 */ 9#include <stdlib.h> 10#include <stdio.h> 11#include <string.h> 12#include <stdint.h> 13#include <stdarg.h> 14 15#include <libfdt.h> 16 17#include "tests.h" 18#include "testdata.h" 19 20static void check_search(void *fdt, const char *compat, ...) 21{ 22 va_list ap; 23 int offset = -1, target; 24 25 va_start(ap, compat); 26 do { 27 target = va_arg(ap, int); 28 verbose_printf("Searching (target = %d): %d ->", 29 target, offset); 30 offset = fdt_node_offset_by_compatible(fdt, offset, compat); 31 verbose_printf("%d\n", offset); 32 33 if (offset != target) 34 FAIL("fdt_node_offset_by_compatible(%s) returns %d " 35 "instead of %d", compat, offset, target); 36 } while (target >= 0); 37 38 va_end(ap); 39} 40 41int main(int argc, char *argv[]) 42{ 43 void *fdt; 44 int subnode1_offset, subnode2_offset; 45 int subsubnode1_offset, subsubnode2_offset; 46 47 test_init(argc, argv); 48 fdt = load_blob_arg(argc, argv); 49 50 subnode1_offset = fdt_path_offset(fdt, "/subnode@1"); 51 subnode2_offset = fdt_path_offset(fdt, "/subnode@2"); 52 subsubnode1_offset = fdt_path_offset(fdt, "/subnode@1/subsubnode"); 53 subsubnode2_offset = fdt_path_offset(fdt, "/subnode@2/subsubnode@0"); 54 55 if ((subnode1_offset < 0) || (subnode2_offset < 0) 56 || (subsubnode1_offset < 0) || (subsubnode2_offset < 0)) 57 FAIL("Can't find required nodes"); 58 59 check_search(fdt, "test_tree1", 0, -FDT_ERR_NOTFOUND); 60 check_search(fdt, "subnode1", subnode1_offset, -FDT_ERR_NOTFOUND); 61 check_search(fdt, "subsubnode1", subsubnode1_offset, -FDT_ERR_NOTFOUND); 62 check_search(fdt, "subsubnode2", subsubnode2_offset, -FDT_ERR_NOTFOUND); 63 /* Eek.. HACK to make this work whatever the order in the 64 * example tree */ 65 if (subsubnode1_offset < subsubnode2_offset) 66 check_search(fdt, "subsubnode", subsubnode1_offset, 67 subsubnode2_offset, -FDT_ERR_NOTFOUND); 68 else 69 check_search(fdt, "subsubnode", subsubnode2_offset, 70 subsubnode1_offset, -FDT_ERR_NOTFOUND); 71 check_search(fdt, "nothing-like-this", -FDT_ERR_NOTFOUND); 72 73 PASS(); 74} 75