1config DTC
  2	bool
  3
  4menuconfig OF
  5	bool "Device Tree and Open Firmware support"
  6	help
  7	  This option enables the device tree infrastructure.
  8	  It is automatically selected by platforms that need it or can
  9	  be enabled manually for unittests, overlays or
 10	  compile-coverage.
 11
 12if OF
 13
 14config OF_UNITTEST
 15	bool "Device Tree runtime unit tests"
 16	depends on OF_IRQ
 17	select OF_EARLY_FLATTREE
 18	select OF_RESOLVE
 19	help
 20	  This option builds in test cases for the device tree infrastructure
 21	  that are executed once at boot time, and the results dumped to the
 22	  console.
 23
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 24	  If unsure, say N here, but this option is safe to enable.
 25
 26config OF_ALL_DTBS
 27	bool "Build all Device Tree Blobs"
 28	depends on COMPILE_TEST
 29	select DTC
 30	help
 31	  This option builds all possible Device Tree Blobs (DTBs) for the
 32	  current architecture.
 33
 34	  If unsure, say N here, but this option is safe to enable.
 35
 36config OF_FLATTREE
 37	bool
 38	select DTC
 39	select LIBFDT
 40	select CRC32
 41
 42config OF_EARLY_FLATTREE
 43	bool
 
 44	select OF_FLATTREE
 45
 46config OF_PROMTREE
 47	bool
 48
 
 
 
 49# Hardly any platforms need this.  It is safe to select, but only do so if you
 50# need it.
 51config OF_DYNAMIC
 52	bool "Support for dynamic device trees" if OF_UNITTEST
 
 53	help
 54	  On some platforms, the device tree can be manipulated at runtime.
 55	  While this option is selected automatically on such platforms, you
 56	  can enable it manually to improve device tree unit test coverage.
 57
 58config OF_ADDRESS
 59	def_bool y
 60	depends on !SPARC && HAS_IOMEM
 61	select OF_ADDRESS_PCI if PCI
 62
 63config OF_ADDRESS_PCI
 64	bool
 65
 66config OF_IRQ
 67	def_bool y
 68	depends on !SPARC && IRQ_DOMAIN
 69
 70config OF_NET
 71	depends on NETDEVICES
 72	def_bool y
 73
 74config OF_MDIO
 75	def_tristate PHYLIB
 76	depends on PHYLIB
 77	help
 78	  OpenFirmware MDIO bus (Ethernet PHY) accessors
 79
 80config OF_PCI
 81	def_tristate PCI
 82	depends on PCI
 83	help
 84	  OpenFirmware PCI bus accessors
 85
 86config OF_PCI_IRQ
 87	def_tristate PCI
 88	depends on OF_PCI && OF_IRQ
 89	help
 90	  OpenFirmware PCI IRQ routing helpers
 91
 92config OF_MTD
 93	depends on MTD
 94	def_bool y
 95
 96config OF_RESERVED_MEM
 97	depends on OF_EARLY_FLATTREE
 98	bool
 99	help
100	  Helpers to allow for reservation of memory regions
101
102config OF_RESOLVE
103	bool
104
105config OF_OVERLAY
106	bool "Device Tree overlays"
107	select OF_DYNAMIC
 
108	select OF_RESOLVE
109	help
110	  Overlays are a method to dynamically modify part of the kernel's
111	  device tree with dynamically loaded data.
112	  While this option is selected automatically when needed, you can
113	  enable it manually to improve device tree unit test coverage.
 
 
 
114
115endif # OF

  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 OF_EARLY_FLATTREE
 18	select IRQ_DOMAIN
 19	select OF_RESOLVE
 20	help
 21	  This option builds in test cases for the device tree infrastructure
 22	  that are executed once at boot time, and the results dumped to the
 23	  console.
 24
 25	  This option should only be enabled for a development kernel. The tests
 26	  will taint the kernel with TAINT_TEST. The tests will cause ERROR and
 27	  WARNING messages to print on the console. The tests will cause stack
 28	  traces to print on the console.  It is possible that the tests will
 29	  leave the devicetree in a corrupted state.
 30
 31	  The unittest output will be verbose.  Copy the output to a file
 32	  via capturing the console output or via the dmesg command.  Process
 33	  this file with scripts/dtc/of_unittest_expect to reduce the
 34	  verbosity, test whether expected output is present, and to
 35	  summarize the results.
 36
 37	  If unsure, say N here. This option is not safe to enable.
 38
 39config OF_KUNIT_TEST
 40	tristate "Devicetree KUnit Test" if !KUNIT_ALL_TESTS
 41	depends on KUNIT
 42	default KUNIT_ALL_TESTS
 43	help
 44	  This option builds KUnit unit tests for device tree infrastructure.
 45
 46	  If unsure, say N here, but this option is safe to enable.
 47
 48config OF_ALL_DTBS
 49	bool "Build all Device Tree Blobs"
 50	depends on COMPILE_TEST
 51	select DTC
 52	help
 53	  This option builds all possible Device Tree Blobs (DTBs) for the
 54	  current architecture.
 55
 56	  If unsure, say N here, but this option is safe to enable.
 57
 58config OF_FLATTREE
 59	bool
 60	select DTC
 61	select LIBFDT
 62	select CRC32
 63
 64config OF_EARLY_FLATTREE
 65	def_bool OF && !(SPARC || ALPHA || HEXAGON || M68K || PARISC || S390)
 66	select DMA_DECLARE_COHERENT if HAS_DMA && HAS_IOMEM
 67	select OF_FLATTREE
 68
 69config OF_PROMTREE
 70	bool
 71
 72config OF_KOBJ
 73	def_bool SYSFS
 74
 75# Hardly any platforms need this.  It is safe to select, but only do so if you
 76# need it.
 77config OF_DYNAMIC
 78	bool "Support for dynamic device trees" if OF_UNITTEST
 79	select OF_KOBJ
 80	help
 81	  On some platforms, the device tree can be manipulated at runtime.
 82	  While this option is selected automatically on such platforms, you
 83	  can enable it manually to improve device tree unit test coverage.
 84
 85config OF_ADDRESS
 86	def_bool y
 87	depends on !SPARC && (HAS_IOMEM || UML)
 
 
 
 
 88
 89config OF_IRQ
 90	def_bool y
 91	depends on !SPARC && IRQ_DOMAIN
 92
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 93config OF_RESERVED_MEM
 94	def_bool OF_EARLY_FLATTREE
 
 
 
 95
 96config OF_RESOLVE
 97	bool
 98
 99config OF_OVERLAY
100	bool "Device Tree overlays"
101	select OF_DYNAMIC
102	select OF_FLATTREE
103	select OF_RESOLVE
104	help
105	  Overlays are a method to dynamically modify part of the kernel's
106	  device tree with dynamically loaded data.
107	  While this option is selected automatically when needed, you can
108	  enable it manually to improve device tree unit test coverage.
109
110config OF_NUMA
111	bool
112
113endif # OF