| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 1 | # SPDX-License-Identifier: GPL-2.0 |
| 2 | config DTC |
| 3 | bool |
| 4 | |
| 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. |
| 12 | |
| 13 | if OF |
| 14 | |
| 15 | config OF_UNITTEST |
| 16 | bool "Device Tree runtime unit tests" |
| 17 | depends on !SPARC |
| 18 | select IRQ_DOMAIN |
| 19 | select OF_EARLY_FLATTREE |
| 20 | select OF_RESOLVE |
| 21 | help |
| 22 | This option builds in test cases for the device tree infrastructure |
| 23 | that are executed once at boot time, and the results dumped to the |
| 24 | console. |
| 25 | |
| 26 | If unsure, say N here, but this option is safe to enable. |
| 27 | |
| 28 | config OF_ALL_DTBS |
| 29 | bool "Build all Device Tree Blobs" |
| 30 | depends on COMPILE_TEST |
| 31 | select DTC |
| 32 | help |
| 33 | This option builds all possible Device Tree Blobs (DTBs) for the |
| 34 | current architecture. |
| 35 | |
| 36 | If unsure, say N here, but this option is safe to enable. |
| 37 | |
| 38 | config OF_FLATTREE |
| 39 | bool |
| 40 | select DTC |
| 41 | select LIBFDT |
| 42 | select CRC32 |
| 43 | |
| 44 | config OF_EARLY_FLATTREE |
| 45 | bool |
| 46 | select OF_FLATTREE |
| 47 | |
| 48 | config OF_PROMTREE |
| 49 | bool |
| 50 | |
| 51 | config OF_KOBJ |
| 52 | def_bool SYSFS |
| 53 | |
| 54 | # Hardly any platforms need this. It is safe to select, but only do so if you |
| 55 | # need it. |
| 56 | config OF_DYNAMIC |
| 57 | bool "Support for dynamic device trees" if OF_UNITTEST |
| 58 | select OF_KOBJ |
| 59 | help |
| 60 | On some platforms, the device tree can be manipulated at runtime. |
| 61 | While this option is selected automatically on such platforms, you |
| 62 | can enable it manually to improve device tree unit test coverage. |
| 63 | |
| 64 | config OF_ADDRESS |
| 65 | def_bool y |
| 66 | depends on !SPARC && (HAS_IOMEM || UML) |
| 67 | |
| 68 | config OF_IRQ |
| 69 | def_bool y |
| 70 | depends on !SPARC && IRQ_DOMAIN |
| 71 | |
| 72 | config OF_NET |
| 73 | depends on NETDEVICES |
| 74 | select NVMEM |
| 75 | def_bool y |
| 76 | |
| 77 | config OF_MDIO |
| 78 | def_tristate PHYLIB |
| 79 | depends on PHYLIB |
| 80 | select FIXED_PHY |
| 81 | help |
| 82 | OpenFirmware MDIO bus (Ethernet PHY) accessors |
| 83 | |
| 84 | config OF_RESERVED_MEM |
| 85 | depends on OF_EARLY_FLATTREE |
| 86 | bool |
| 87 | help |
| 88 | Helpers to allow for reservation of memory regions |
| 89 | |
| 90 | config OF_RESOLVE |
| 91 | bool |
| 92 | |
| 93 | config OF_OVERLAY |
| 94 | bool "Device Tree overlays" |
| 95 | select OF_DYNAMIC |
| 96 | select OF_FLATTREE |
| 97 | select OF_RESOLVE |
| 98 | help |
| 99 | Overlays are a method to dynamically modify part of the kernel's |
| 100 | device tree with dynamically loaded data. |
| 101 | While this option is selected automatically when needed, you can |
| 102 | enable it manually to improve device tree unit test coverage. |
| 103 | |
| 104 | config OF_NUMA |
| 105 | bool |
| 106 | |
| 107 | endif # OF |