1 /*
2 * libfdt - Flat Device Tree manipulation
3 * Testcase for fdt_path_offset()
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 <libfdt.h>
27
28 #include "tests.h"
29 #include "testdata.h"
30
vcheck_search(void * fdt,const char * propname,const void * propval,int proplen,va_list ap)31 static void vcheck_search(void *fdt, const char *propname, const void *propval,
32 int proplen, va_list ap)
33 {
34 int offset = -1, target;
35
36 do {
37 target = va_arg(ap, int);
38 verbose_printf("Searching (target = %d): %d ->",
39 target, offset);
40 offset = fdt_node_offset_by_prop_value(fdt, offset, propname,
41 propval, proplen);
42 verbose_printf("%d\n", offset);
43
44 if (offset != target)
45 FAIL("fdt_node_offset_by_prop_value() returns %d "
46 "instead of %d", offset, target);
47 } while (target >= 0);
48 }
49
check_search(void * fdt,const char * propname,const void * propval,int proplen,...)50 static void check_search(void *fdt, const char *propname, const void *propval,
51 int proplen, ...)
52 {
53 va_list ap;
54
55 va_start(ap, proplen);
56 vcheck_search(fdt, propname, propval, proplen, ap);
57 va_end(ap);
58 }
59
check_search_str(void * fdt,const char * propname,const char * propval,...)60 static void check_search_str(void *fdt, const char *propname,
61 const char *propval, ...)
62 {
63 va_list ap;
64
65 va_start(ap, propval);
66 vcheck_search(fdt, propname, propval, strlen(propval)+1, ap);
67 va_end(ap);
68 }
69
70 #define check_search_cell(fdt, propname, propval, ...) \
71 { \
72 fdt32_t val = cpu_to_fdt32(propval); \
73 check_search((fdt), (propname), &val, sizeof(val), \
74 ##__VA_ARGS__); \
75 }
76
main(int argc,char * argv[])77 int main(int argc, char *argv[])
78 {
79 void *fdt;
80 int subnode1_offset, subnode2_offset;
81 int subsubnode1_offset, subsubnode2_offset;
82
83 test_init(argc, argv);
84 fdt = load_blob_arg(argc, argv);
85
86 subnode1_offset = fdt_path_offset(fdt, "/subnode@1");
87 subnode2_offset = fdt_path_offset(fdt, "/subnode@2");
88 subsubnode1_offset = fdt_path_offset(fdt, "/subnode@1/subsubnode");
89 subsubnode2_offset = fdt_path_offset(fdt, "/subnode@2/subsubnode@0");
90
91 if ((subnode1_offset < 0) || (subnode2_offset < 0)
92 || (subsubnode1_offset < 0) || (subsubnode2_offset < 0))
93 FAIL("Can't find required nodes");
94
95 check_search_cell(fdt, "prop-int", TEST_VALUE_1, 0, subnode1_offset,
96 subsubnode1_offset, -FDT_ERR_NOTFOUND);
97
98 check_search_cell(fdt, "prop-int", TEST_VALUE_2, subnode2_offset,
99 subsubnode2_offset, -FDT_ERR_NOTFOUND);
100
101 check_search_str(fdt, "prop-str", TEST_STRING_1, 0, -FDT_ERR_NOTFOUND);
102
103 check_search_str(fdt, "prop-str", "no such string", -FDT_ERR_NOTFOUND);
104
105 check_search_cell(fdt, "prop-int", TEST_VALUE_1+1, -FDT_ERR_NOTFOUND);
106
107 check_search(fdt, "no-such-prop", NULL, 0, -FDT_ERR_NOTFOUND);
108
109 PASS();
110 }
111