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
 4config OF
 5	bool
 
 
 
 
 
 6
 7menu "Device Tree and Open Firmware support"
 8	depends on OF
 9
10config OF_SELFTEST
11	bool "Device Tree Runtime self tests"
12	depends on OF_IRQ
 
 
 
13	help
14	  This option builds in test cases for the device tree infrastructure
15	  that are executed once at boot time, and the results dumped to the
16	  console.
17
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
18	  If unsure, say N here, but this option is safe to enable.
19
20config OF_FLATTREE
21	bool
22	select DTC
 
 
23
24config OF_EARLY_FLATTREE
25	bool
 
26	select OF_FLATTREE
27
28config OF_PROMTREE
29	bool
30
 
 
 
31# Hardly any platforms need this.  It is safe to select, but only do so if you
32# need it.
33config OF_DYNAMIC
34	bool
 
 
 
 
 
35
36config OF_ADDRESS
37	def_bool y
38	depends on !SPARC
39	select OF_ADDRESS_PCI if PCI
40
41config OF_ADDRESS_PCI
42	bool
43
44config OF_IRQ
45	def_bool y
46	depends on !SPARC
47
48config OF_NET
49	depends on NETDEVICES
50	def_bool y
51
52config OF_MDIO
53	def_tristate PHYLIB
54	depends on PHYLIB
55	help
56	  OpenFirmware MDIO bus (Ethernet PHY) accessors
57
58config OF_PCI
59	def_tristate PCI
60	depends on PCI
 
 
61	help
62	  OpenFirmware PCI bus accessors
 
 
 
63
64config OF_PCI_IRQ
65	def_tristate PCI
66	depends on OF_PCI && OF_IRQ
67	help
68	  OpenFirmware PCI IRQ routing helpers
69
70config OF_MTD
71	depends on MTD
72	def_bool y
73
74config OF_RESERVED_MEM
75	depends on OF_EARLY_FLATTREE
76	bool
77	help
78	  Helpers to allow for reservation of memory regions
79
80endmenu # OF