Commit | Line | Data |
---|---|---|
af6074fc | 1 | # SPDX-License-Identifier: GPL-2.0 |
5ab5fc7e GL |
2 | config DTC |
3 | bool | |
4 | ||
0166dc11 RH |
5 | menuconfig OF |
6 | bool "Device Tree and Open Firmware support" | |
7 | help | |
8 | This option enables the device tree infrastructure. | |
9 | It is automatically selected by platforms that need it or can | |
10 | be enabled manually for unittests, overlays or | |
11 | compile-coverage. | |
bcbefae2 | 12 | |
0166dc11 | 13 | if OF |
5ab5fc7e | 14 | |
19fd7487 GL |
15 | config OF_UNITTEST |
16 | bool "Device Tree runtime unit tests" | |
6019a3d0 RH |
17 | depends on !SPARC |
18 | select IRQ_DOMAIN | |
649e0a77 | 19 | select OF_EARLY_FLATTREE |
2eb46da2 | 20 | select OF_RESOLVE |
53a42093 GL |
21 | help |
22 | This option builds in test cases for the device tree infrastructure | |
5d927086 | 23 | that are executed once at boot time, and the results dumped to the |
53a42093 GL |
24 | console. |
25 | ||
f381b31a FR |
26 | This option should only be enabled for a development kernel. The tests |
27 | will taint the kernel with TAINT_TEST. The tests will cause ERROR and | |
28 | WARNING messages to print on the console. The tests will cause stack | |
29 | traces to print on the console. It is possible that the tests will | |
30 | leave the devicetree in a corrupted state. | |
31 | ||
32 | The unittest output will be verbose. Copy the output to a file | |
33 | via capturing the console output or via the dmesg command. Process | |
34 | this file with scripts/dtc/of_unittest_expect to reduce the | |
35 | verbosity, test whether expected output is present, and to | |
36 | summarize the results. | |
37 | ||
38 | If unsure, say N here. This option is not safe to enable. | |
53a42093 | 39 | |
1b7c501b RH |
40 | config OF_ALL_DTBS |
41 | bool "Build all Device Tree Blobs" | |
42 | depends on COMPILE_TEST | |
43 | select DTC | |
44 | help | |
45 | This option builds all possible Device Tree Blobs (DTBs) for the | |
46 | current architecture. | |
47 | ||
48 | If unsure, say N here, but this option is safe to enable. | |
49 | ||
e169cfbe GL |
50 | config OF_FLATTREE |
51 | bool | |
5ab5fc7e | 52 | select DTC |
e6a6928c | 53 | select LIBFDT |
08d53aa5 | 54 | select CRC32 |
e169cfbe | 55 | |
e6ce1324 SN |
56 | config OF_EARLY_FLATTREE |
57 | bool | |
7e08baf6 | 58 | select DMA_DECLARE_COHERENT if HAS_DMA && HAS_IOMEM |
e6ce1324 SN |
59 | select OF_FLATTREE |
60 | ||
3cfc535c AS |
61 | config OF_PROMTREE |
62 | bool | |
63 | ||
b56b5528 RH |
64 | config OF_KOBJ |
65 | def_bool SYSFS | |
66 | ||
0f22dd39 GL |
67 | # Hardly any platforms need this. It is safe to select, but only do so if you |
68 | # need it. | |
fcdeb7fe | 69 | config OF_DYNAMIC |
121c92ca | 70 | bool "Support for dynamic device trees" if OF_UNITTEST |
b56b5528 | 71 | select OF_KOBJ |
121c92ca GU |
72 | help |
73 | On some platforms, the device tree can be manipulated at runtime. | |
74 | While this option is selected automatically on such platforms, you | |
75 | can enable it manually to improve device tree unit test coverage. | |
fcdeb7fe | 76 | |
6b884a8d GL |
77 | config OF_ADDRESS |
78 | def_bool y | |
6019a3d0 | 79 | depends on !SPARC && (HAS_IOMEM || UML) |
6b884a8d | 80 | |
e3873444 GL |
81 | config OF_IRQ |
82 | def_bool y | |
63c60e3a | 83 | depends on !SPARC && IRQ_DOMAIN |
e3873444 | 84 | |
3f0c8206 | 85 | config OF_RESERVED_MEM |
1ee292a6 | 86 | def_bool OF_EARLY_FLATTREE |
3f0c8206 | 87 | |
7941b27b PA |
88 | config OF_RESOLVE |
89 | bool | |
90 | ||
7518b589 | 91 | config OF_OVERLAY |
5c776064 | 92 | bool "Device Tree overlays" |
7518b589 | 93 | select OF_DYNAMIC |
39a751a4 | 94 | select OF_FLATTREE |
7518b589 | 95 | select OF_RESOLVE |
121c92ca GU |
96 | help |
97 | Overlays are a method to dynamically modify part of the kernel's | |
98 | device tree with dynamically loaded data. | |
99 | While this option is selected automatically when needed, you can | |
100 | enable it manually to improve device tree unit test coverage. | |
7518b589 | 101 | |
298535c0 DD |
102 | config OF_NUMA |
103 | bool | |
104 | ||
0166dc11 | 105 | endif # OF |