]>
Commit | Line | Data |
---|---|---|
0596d35d SG |
1 | /* |
2 | * libfdt - Flat Device Tree manipulation | |
3 | * Copyright (C) 2014 David Gibson <david@gibson.dropbear.id.au> | |
4 | * SPDX-License-Identifier: GPL-2.0+ BSD-2-Clause | |
5 | */ | |
6feed2a5 | 6 | #include <libfdt_env.h> |
0596d35d SG |
7 | |
8 | #ifndef USE_HOSTCC | |
9 | #include <fdt.h> | |
10 | #include <libfdt.h> | |
11 | #else | |
12 | #include "fdt_host.h" | |
13 | #endif | |
14 | ||
15 | #include "libfdt_internal.h" | |
16 | ||
17 | int fdt_address_cells(const void *fdt, int nodeoffset) | |
18 | { | |
19 | const fdt32_t *ac; | |
20 | int val; | |
21 | int len; | |
22 | ||
23 | ac = fdt_getprop(fdt, nodeoffset, "#address-cells", &len); | |
24 | if (!ac) | |
25 | return 2; | |
26 | ||
27 | if (len != sizeof(*ac)) | |
28 | return -FDT_ERR_BADNCELLS; | |
29 | ||
30 | val = fdt32_to_cpu(*ac); | |
31 | if ((val <= 0) || (val > FDT_MAX_NCELLS)) | |
32 | return -FDT_ERR_BADNCELLS; | |
33 | ||
34 | return val; | |
35 | } | |
36 | ||
37 | int fdt_size_cells(const void *fdt, int nodeoffset) | |
38 | { | |
39 | const fdt32_t *sc; | |
40 | int val; | |
41 | int len; | |
42 | ||
43 | sc = fdt_getprop(fdt, nodeoffset, "#size-cells", &len); | |
44 | if (!sc) | |
45 | return 2; | |
46 | ||
47 | if (len != sizeof(*sc)) | |
48 | return -FDT_ERR_BADNCELLS; | |
49 | ||
50 | val = fdt32_to_cpu(*sc); | |
51 | if ((val < 0) || (val > FDT_MAX_NCELLS)) | |
52 | return -FDT_ERR_BADNCELLS; | |
53 | ||
54 | return val; | |
55 | } |