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fdt: Add an option to disable device tree in SPL

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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
1 changed files with 8 additions and 3 deletions
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11
dts/Kconfig
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@ -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