1# SPDX-License-Identifier: GPL-2.0
  2config DTC
  3	bool
  4
  5config GENERIC_BUILTIN_DTB
  6	bool
  7
  8config BUILTIN_DTB_ALL
  9	bool
 10
 11menuconfig OF
 12	bool "Device Tree and Open Firmware support"
 13	help
 14	  This option enables the device tree infrastructure.
 15	  It is automatically selected by platforms that need it or can
 16	  be enabled manually for unittests, overlays or
 17	  compile-coverage.
 18
 19if OF
 20
 21config OF_UNITTEST
 22	bool "Device Tree runtime unit tests"
 23	depends on OF_EARLY_FLATTREE
 24	select IRQ_DOMAIN
 25	select OF_RESOLVE
 26	help
 27	  This option builds in test cases for the device tree infrastructure
 28	  that are executed once at boot time, and the results dumped to the
 29	  console.
 30
 31	  This option should only be enabled for a development kernel. The tests
 32	  will taint the kernel with TAINT_TEST. The tests will cause ERROR and
 33	  WARNING messages to print on the console. The tests will cause stack
 34	  traces to print on the console.  It is possible that the tests will
 35	  leave the devicetree in a corrupted state.
 36
 37	  The unittest output will be verbose.  Copy the output to a file
 38	  via capturing the console output or via the dmesg command.  Process
 39	  this file with scripts/dtc/of_unittest_expect to reduce the
 40	  verbosity, test whether expected output is present, and to
 41	  summarize the results.
 42
 43	  If unsure, say N here. This option is not safe to enable.
 44
 45config OF_KUNIT_TEST
 46	tristate "Devicetree KUnit Test" if !KUNIT_ALL_TESTS
 47	depends on KUNIT
 48	default KUNIT_ALL_TESTS
 49	help
 50	  This option builds KUnit unit tests for device tree infrastructure.
 51
 52	  If unsure, say N here, but this option is safe to enable.
 53
 54config OF_ALL_DTBS
 55	bool "Build all Device Tree Blobs"
 56	depends on COMPILE_TEST
 57	select DTC
 58	help
 59	  This option builds all possible Device Tree Blobs (DTBs) for the
 60	  current architecture.
 61
 62	  If unsure, say N here, but this option is safe to enable.
 63
 64config OF_FLATTREE
 65	bool
 66	select DTC
 67	select LIBFDT
 68	select CRC32
 69
 70config OF_EARLY_FLATTREE
 71	def_bool OF && !(SPARC || ALPHA || HEXAGON || M68K || PARISC || S390)
 72	select DMA_DECLARE_COHERENT if HAS_DMA && HAS_IOMEM
 73	select OF_FLATTREE
 74
 75config OF_PROMTREE
 76	bool
 77
 78config OF_KOBJ
 79	def_bool SYSFS
 80
 81# Hardly any platforms need this.  It is safe to select, but only do so if you
 82# need it.
 83config OF_DYNAMIC
 84	bool "Support for dynamic device trees" if OF_UNITTEST
 85	select OF_KOBJ
 86	help
 87	  On some platforms, the device tree can be manipulated at runtime.
 88	  While this option is selected automatically on such platforms, you
 89	  can enable it manually to improve device tree unit test coverage.
 90
 91config OF_ADDRESS
 92	def_bool y
 93	depends on !SPARC && (HAS_IOMEM || UML)
 94
 95config OF_IRQ
 96	def_bool y
 97	depends on !SPARC && IRQ_DOMAIN
 98
 99config OF_RESERVED_MEM
100	def_bool OF_EARLY_FLATTREE
101
102config OF_RESOLVE
103	bool
 
 
 
104
105config OF_OVERLAY
106	bool "Device Tree overlays"
107	select OF_DYNAMIC
108	select OF_FLATTREE
109	select OF_RESOLVE
110	help
111	  Overlays are a method to dynamically modify part of the kernel's
112	  device tree with dynamically loaded data.
113	  While this option is selected automatically when needed, you can
114	  enable it manually to improve device tree unit test coverage.
115
116config OF_OVERLAY_KUNIT_TEST
117	tristate "Device Tree overlay KUnit tests" if !KUNIT_ALL_TESTS
118	depends on KUNIT
119	default KUNIT_ALL_TESTS
120	select DTC
121	help
122	  This option builds KUnit unit tests for the device tree overlay code.
123
124	  If unsure, say N here, but this option is safe to enable.
 
 
 
 
125
126config OF_NUMA
127	bool
 
 
 
 
 
 
 
 
 
128
129endif # OF

 
 1config DTC
 2	bool
 3
 4config OF
 5	bool
 6
 7menu "Device Tree and Open Firmware support"
 8	depends on OF
 9
10config PROC_DEVICETREE
11	bool "Support for device tree in /proc"
12	depends on PROC_FS && !SPARC
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
13	help
14	  This option adds a device-tree directory under /proc which contains
15	  an image of the device tree that the kernel copies from Open
16	  Firmware or other boot firmware. If unsure, say Y here.
 
17
18config OF_FLATTREE
19	bool
20	select DTC
 
 
21
22config OF_EARLY_FLATTREE
23	bool
 
24	select OF_FLATTREE
25
26config OF_PROMTREE
27	bool
28
 
 
 
 
 
29config OF_DYNAMIC
30	def_bool y
31	depends on PPC_OF
 
 
 
 
32
33config OF_ADDRESS
34	def_bool y
35	depends on !SPARC
36
37config OF_IRQ
38	def_bool y
39	depends on !SPARC
40
41config OF_DEVICE
42	def_bool y
43
44config OF_GPIO
45	def_bool y
46	depends on GPIOLIB && !SPARC
47	help
48	  OpenFirmware GPIO accessors
49
50config OF_I2C
51	def_tristate I2C
52	depends on I2C && !SPARC
 
 
53	help
54	  OpenFirmware I2C accessors
55
56config OF_NET
57	depends on NETDEVICES
58	def_bool y
59
60config OF_SPI
61	def_tristate SPI
62	depends on SPI && !SPARC
 
63	help
64	  OpenFirmware SPI accessors
65
66config OF_MDIO
67	def_tristate PHYLIB
68	depends on PHYLIB
69	help
70	  OpenFirmware MDIO bus (Ethernet PHY) accessors
71
72config OF_PCI
73	def_tristate PCI
74	depends on PCI
75	help
76	  OpenFirmware PCI bus accessors
77
78config OF_PCI_IRQ
79	def_tristate PCI
80	depends on OF_PCI && OF_IRQ
81	help
82	  OpenFirmware PCI IRQ routing helpers
83
84endmenu # OF