1# SPDX-License-Identifier: GPL-2.0 2config DTC 3 bool 4 5menuconfig 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 13if OF 14 15config 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 28config 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 38config OF_FLATTREE 39 bool 40 select DTC 41 select LIBFDT 42 select CRC32 43 44config OF_EARLY_FLATTREE 45 bool 46 select OF_FLATTREE 47 48config OF_PROMTREE 49 bool 50 51config 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. 56config 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 64config OF_ADDRESS 65 def_bool y 66 depends on !SPARC && (HAS_IOMEM || UML) 67 select OF_ADDRESS_PCI if PCI 68 69config OF_ADDRESS_PCI 70 bool 71 72config OF_IRQ 73 def_bool y 74 depends on !SPARC && IRQ_DOMAIN 75 76config OF_NET 77 depends on NETDEVICES 78 def_bool y 79 80config OF_MDIO 81 def_tristate PHYLIB 82 depends on PHYLIB 83 select FIXED_PHY 84 help 85 OpenFirmware MDIO bus (Ethernet PHY) accessors 86 87config OF_PCI 88 def_tristate PCI 89 depends on PCI 90 help 91 OpenFirmware PCI bus accessors 92 93config OF_PCI_IRQ 94 def_tristate PCI 95 depends on OF_PCI && OF_IRQ 96 help 97 OpenFirmware PCI IRQ routing helpers 98 99config OF_RESERVED_MEM 100 depends on OF_EARLY_FLATTREE 101 bool 102 help 103 Helpers to allow for reservation of memory regions 104 105config OF_RESOLVE 106 bool 107 108config OF_OVERLAY 109 bool "Device Tree overlays" 110 select OF_DYNAMIC 111 select OF_RESOLVE 112 help 113 Overlays are a method to dynamically modify part of the kernel's 114 device tree with dynamically loaded data. 115 While this option is selected automatically when needed, you can 116 enable it manually to improve device tree unit test coverage. 117 118config OF_NUMA 119 bool 120 121endif # OF 122