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
check_search(void * fdt,const char * compat,...)20 static 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
main(int argc,char * argv[])41 int 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