u-boot/dts/Kconfig
Simon Glass 2860f03b91 fdt: Add an option to disable device tree in SPL
Some boards cannot support device tree due to lack of memory. Add an option
to allow these boards to continue to work (and even use driver model).
This is a 'negative' option since most boards are expected to support device
tree in SPL.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-04-23 09:05:54 -06:00

59 lines
1.5 KiB
Text

#
# Device Tree Control
#
config SUPPORT_OF_CONTROL
bool
menu "Device Tree Control"
depends on SUPPORT_OF_CONTROL
config OF_CONTROL
bool "Run-time configuration via Device Tree"
help
This feature provides for run-time configuration of U-Boot
via a flattened device tree.
config SPL_DISABLE_OF_CONTROL
bool "Disable run-time configuration via Device Tree in SPL"
depends on OF_CONTROL
help
Some boards use device tree in U-Boot but only have 4KB of SRAM
which is not enough to support device tree. Enable this option to
allow such boards to be supported by U-Boot SPL.
choice
prompt "Provider of DTB for DT control"
depends on OF_CONTROL
config OF_SEPARATE
bool "Separate DTB for DT control"
depends on !SANDBOX
help
If this option is enabled, the device tree will be built and
placed as a separate u-boot.dtb file alongside the U-Boot image.
config OF_EMBED
bool "Embedded DTB for DT control"
help
If this option is enabled, the device tree will be picked up and
built into the U-Boot image.
config OF_HOSTFILE
bool "Host filed DTB for DT control"
depends on SANDBOX
help
If this option is enabled, DTB will be read from a file on startup.
This is only useful for Sandbox. Use the -d flag to U-Boot to
specify the file to read.
endchoice
config DEFAULT_DEVICE_TREE
string "Default Device Tree for DT control"
help
This option specifies the default Device Tree used for DT control.
It can be overridden from the command line:
$ make DEVICE_TREE=<device-tree-name>
endmenu