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>
This commit is contained in:
Simon Glass 2015-02-27 22:06:38 -07:00
parent 293f16b1e7
commit 2860f03b91

View File

@ -1,9 +1,6 @@
#
# Device Tree Control
#
# TODO:
# This feature is not currently supported for SPL,
# but this restriction should be removed in the future.
config SUPPORT_OF_CONTROL
bool
@ -17,6 +14,14 @@ config OF_CONTROL
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