1 // SPDX-License-Identifier: LGPL-2.1-or-later
2 /*
3 * libfdt - Flat Device Tree manipulation
4 * Testcase for #address-cells and #size-cells handling
5 * Copyright (C) 2014 David Gibson, <david@gibson.dropbear.id.au>
6 */
7 #include <stdlib.h>
8 #include <stdio.h>
9 #include <string.h>
10 #include <stdint.h>
11
12 #include <libfdt.h>
13
14 #include "tests.h"
15 #include "testdata.h"
16
check_node(const void * fdt,const char * path,int ac,int sc)17 static void check_node(const void *fdt, const char *path, int ac, int sc)
18 {
19 int offset;
20 int xac, xsc;
21
22 offset = fdt_path_offset(fdt, path);
23 if (offset < 0)
24 FAIL("Couldn't find path %s", path);
25
26 xac = fdt_address_cells(fdt, offset);
27 xsc = fdt_size_cells(fdt, offset);
28
29 if (xac != ac)
30 FAIL("Address cells for %s is %d instead of %d\n",
31 path, xac, ac);
32 if (xsc != sc)
33 FAIL("Size cells for %s is %d instead of %d\n",
34 path, xsc, sc);
35 }
36
main(int argc,char * argv[])37 int main(int argc, char *argv[])
38 {
39 void *fdt;
40
41 if (argc != 2)
42 CONFIG("Usage: %s <dtb file>\n", argv[0]);
43
44 test_init(argc, argv);
45 fdt = load_blob(argv[1]);
46
47 check_node(fdt, "/", 2, 2);
48 check_node(fdt, "/identity-bus@0", 2, 1);
49 check_node(fdt, "/simple-bus@1000000", 2, 1);
50 check_node(fdt, "/discrete-bus@2000000", 1, 0);
51 check_node(fdt, "/c0", -FDT_ERR_BADNCELLS, -FDT_ERR_BADNCELLS);
52 check_node(fdt, "/c1", -FDT_ERR_BADNCELLS, -FDT_ERR_BADNCELLS);
53 check_node(fdt, "/c2", -FDT_ERR_BADNCELLS, -FDT_ERR_BADNCELLS);
54 check_node(fdt, "/c3", -FDT_ERR_BADNCELLS, 0);
55 PASS();
56 }
57