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

  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 DMA_DECLARE_COHERENT if HAS_DMA
 47	select OF_FLATTREE
 48
 49config OF_PROMTREE
 50	bool
 51
 52config OF_KOBJ
 53	def_bool SYSFS
 54
 55# Hardly any platforms need this.  It is safe to select, but only do so if you
 56# need it.
 57config OF_DYNAMIC
 58	bool "Support for dynamic device trees" if OF_UNITTEST
 59	select OF_KOBJ
 60	help
 61	  On some platforms, the device tree can be manipulated at runtime.
 62	  While this option is selected automatically on such platforms, you
 63	  can enable it manually to improve device tree unit test coverage.
 64
 65config OF_ADDRESS
 66	def_bool y
 67	depends on !SPARC && (HAS_IOMEM || UML)
 68
 69config OF_IRQ
 70	def_bool y
 71	depends on !SPARC && IRQ_DOMAIN
 72
 73config OF_NET
 74	depends on NETDEVICES
 75	def_bool y
 76
 77config OF_MDIO
 78	def_tristate PHYLIB
 79	depends on PHYLIB
 80	select FIXED_PHY
 81	help
 82	  OpenFirmware MDIO bus (Ethernet PHY) accessors
 83
 84config OF_RESERVED_MEM
 85	bool
 86	depends on OF_EARLY_FLATTREE
 87	default y if DMA_DECLARE_COHERENT || DMA_CMA
 88
 89config OF_RESOLVE
 90	bool
 91
 92config OF_OVERLAY
 93	bool "Device Tree overlays"
 94	select OF_DYNAMIC
 95	select OF_FLATTREE
 96	select OF_RESOLVE
 97	help
 98	  Overlays are a method to dynamically modify part of the kernel's
 99	  device tree with dynamically loaded data.
100	  While this option is selected automatically when needed, you can
101	  enable it manually to improve device tree unit test coverage.
102
103config OF_NUMA
104	bool
105
106config OF_DMA_DEFAULT_COHERENT
107	# arches should select this if DMA is coherent by default for OF devices
108	bool
109
110endif # OF