xref: /openbmc/u-boot/dts/Kconfig (revision 643ad899)
1#
2# Device Tree Control
3#
4# TODO:
5#   This feature is not currently supported for SPL,
6#    but this restriction should be removed in the future.
7
8config SUPPORT_OF_CONTROL
9	bool
10
11menu "Device Tree Control"
12	depends on !SPL_BUILD
13	depends on SUPPORT_OF_CONTROL
14
15config OF_CONTROL
16	bool "Run-time configuration via Device Tree"
17	help
18	  This feature provides for run-time configuration of U-Boot
19	  via a flattened device tree.
20
21choice
22	prompt "Provider of DTB for DT control"
23	depends on OF_CONTROL
24
25config OF_SEPARATE
26	bool "Separate DTB for DT control"
27	depends on !SANDBOX
28	help
29	  If this option is enabled, the device tree will be built and
30	  placed as a separate u-boot.dtb file alongside the U-Boot image.
31
32config OF_EMBED
33	bool "Embedded DTB for DT control"
34	help
35	  If this option is enabled, the device tree will be picked up and
36	  built into the U-Boot image.
37
38config OF_HOSTFILE
39	bool "Host filed DTB for DT control"
40	depends on SANDBOX
41	help
42	  If this option is enabled, DTB will be read from a file on startup.
43	  This is only useful for Sandbox.  Use the -d flag to U-Boot to
44	  specify the file to read.
45
46endchoice
47
48config DEFAULT_DEVICE_TREE
49	string "Default Device Tree for DT control"
50	help
51	  This option specifies the default Device Tree used for DT control.
52	  It can be overridden from the command line:
53	  $ make DEVICE_TREE=<device-tree-name>
54
55endmenu
56