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	  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.
 39
 40config 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
 50config OF_FLATTREE
 51	bool
 52	select DTC
 53	select LIBFDT
 54	select CRC32
 55
 56config OF_EARLY_FLATTREE
 57	bool
 58	select DMA_DECLARE_COHERENT if HAS_DMA && HAS_IOMEM
 59	select OF_FLATTREE
 60
 61config OF_PROMTREE
 62	bool
 63
 64config OF_KOBJ
 65	def_bool SYSFS
 66
 67# Hardly any platforms need this.  It is safe to select, but only do so if you
 68# need it.
 69config OF_DYNAMIC
 70	bool "Support for dynamic device trees" if OF_UNITTEST
 71	select OF_KOBJ
 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.
 76
 77config OF_ADDRESS
 78	def_bool y
 79	depends on !SPARC && (HAS_IOMEM || UML)
 
 
 
 
 80
 81config OF_IRQ
 82	def_bool y
 83	depends on !SPARC && IRQ_DOMAIN
 84
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 85config OF_RESERVED_MEM
 86	def_bool OF_EARLY_FLATTREE
 
 
 
 87
 88config OF_RESOLVE
 89	bool
 90
 91config OF_OVERLAY
 92	bool "Device Tree overlays"
 93	select OF_DYNAMIC
 94	select OF_FLATTREE
 95	select OF_RESOLVE
 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.
101
102config OF_NUMA
103	bool
104
105endif # OF

 
  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	select FIXED_PHY
 78	help
 79	  OpenFirmware MDIO bus (Ethernet PHY) accessors
 80
 81config OF_PCI
 82	def_tristate PCI
 83	depends on PCI
 84	help
 85	  OpenFirmware PCI bus accessors
 86
 87config OF_PCI_IRQ
 88	def_tristate PCI
 89	depends on OF_PCI && OF_IRQ
 90	help
 91	  OpenFirmware PCI IRQ routing helpers
 92
 93config OF_RESERVED_MEM
 94	depends on OF_EARLY_FLATTREE
 95	bool
 96	help
 97	  Helpers to allow for reservation of memory regions
 98
 99config OF_RESOLVE
100	bool
101
102config OF_OVERLAY
103	bool "Device Tree overlays"
104	select OF_DYNAMIC
 
105	select OF_RESOLVE
106	help
107	  Overlays are a method to dynamically modify part of the kernel's
108	  device tree with dynamically loaded data.
109	  While this option is selected automatically when needed, you can
110	  enable it manually to improve device tree unit test coverage.
111
112config OF_NUMA
113	bool
114
115endif # OF