1 /*
2 * libfdt - Flat Device Tree manipulation
3 * Testcase for string references in dtc
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
25 #include <libfdt.h>
26
27 #include "tests.h"
28 #include "testdata.h"
29
check_ref(const void * fdt,int node,const char * checkpath)30 static void check_ref(const void *fdt, int node, const char *checkpath)
31 {
32 const char *p;
33 int len;
34
35 p = fdt_getprop(fdt, node, "ref", &len);
36 if (!p)
37 FAIL("fdt_getprop(%d, \"ref\"): %s", node, fdt_strerror(len));
38 if (!streq(p, checkpath))
39 FAIL("'ref' in node at %d has value \"%s\" instead of \"%s\"",
40 node, p, checkpath);
41
42 p = fdt_getprop(fdt, node, "lref", &len);
43 if (!p)
44 FAIL("fdt_getprop(%d, \"lref\"): %s", node, fdt_strerror(len));
45 if (!streq(p, checkpath))
46 FAIL("'lref' in node at %d has value \"%s\" instead of \"%s\"",
47 node, p, checkpath);
48 }
49
check_rref(const void * fdt)50 static void check_rref(const void *fdt)
51 {
52 const char *p;
53 int len;
54
55 /* Check reference to root node */
56 p = fdt_getprop(fdt, 0, "rref", &len);
57 if (!p)
58 FAIL("fdt_getprop(0, \"rref\"): %s", fdt_strerror(len));
59 if (!streq(p, "/"))
60 FAIL("'rref' in root node has value \"%s\" instead of \"/\"",
61 p);
62 }
63
main(int argc,char * argv[])64 int main(int argc, char *argv[])
65 {
66 void *fdt;
67 const char *p;
68 int len, multilen;
69 int n1, n2, n3, n4;
70
71 test_init(argc, argv);
72 fdt = load_blob_arg(argc, argv);
73
74 n1 = fdt_path_offset(fdt, "/node1");
75 if (n1 < 0)
76 FAIL("fdt_path_offset(/node1): %s", fdt_strerror(n1));
77 n2 = fdt_path_offset(fdt, "/node2");
78 if (n2 < 0)
79 FAIL("fdt_path_offset(/node2): %s", fdt_strerror(n2));
80
81 check_ref(fdt, n1, "/node2");
82 check_ref(fdt, n2, "/node1");
83
84 /* Check multiple reference */
85 multilen = strlen("/node1") + strlen("/node2") + 2;
86 p = fdt_getprop(fdt, 0, "multiref", &len);
87 if (!p)
88 FAIL("fdt_getprop(0, \"multiref\"): %s", fdt_strerror(len));
89 if (len != multilen)
90 FAIL("multiref has wrong length, %d instead of %d",
91 len, multilen);
92 if ((!streq(p, "/node1") || !streq(p + strlen("/node1") + 1, "/node2")))
93 FAIL("multiref has wrong value");
94
95 /* Check reference to nested nodes with common prefix */
96 n3 = fdt_path_offset(fdt, "/foo/baz");
97 if (n3 < 0)
98 FAIL("fdt_path_offset(/foo/baz): %s", fdt_strerror(n3));
99 n4 = fdt_path_offset(fdt, "/foobar/baz");
100 if (n4 < 0)
101 FAIL("fdt_path_offset(/foobar/baz): %s", fdt_strerror(n4));
102 check_ref(fdt, n3, "/foobar/baz");
103 check_ref(fdt, n4, "/foo/baz");
104
105 check_rref(fdt);
106
107 PASS();
108 }
109