Commit 76f2230d authored Oct 03, 2015 by Thomas Petazzoni Committed by Peter Korsgaard Oct 04, 2015

u-boot: add an option to indicate that DTC is needed



Some U-Boot configurations require the Device Tree compiler to be
available, so we need to depend on host-dtc (example configuration:
zynq_zed).

However, we don't want to build it unconditionally, since the vast
majority of U-Boot configurations don't need it (and host-dtc itself
has a bunch of dependencies).

So, we simply add a Config.in option that allows users to indicate
whether their U-Boot needs DTC or not, and depend on host-dtc if this
option is enabled.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

parent 5774f07d

boot/uboot/Config.in

+7 −0

Original line number	Diff line number	Diff line
		@@ -139,6 +139,13 @@ config BR2_TARGET_UBOOT_CUSTOM_CONFIG_FILE
		Path to the U-Boot configuration file.
		endif

		config BR2_TARGET_UBOOT_NEEDS_DTC
		bool "U-Boot needs dtc"
		select BR2_PACKAGE_HOST_DTC
		help
		Select this option if your U-Boot board configuration
		requires the Device Tree compiler to be available.

		choice
		prompt "U-Boot binary format"
		default BR2_TARGET_UBOOT_FORMAT_BIN

boot/uboot/uboot.mk

+4 −0

Original line number	Diff line number	Diff line
		@@ -77,6 +77,10 @@ UBOOT_MAKE_OPTS += \
		CROSS_COMPILE="$(TARGET_CROSS)" \
		ARCH=$(UBOOT_ARCH)

		ifeq ($(BR2_TARGET_UBOOT_NEEDS_DTC),y)
		UBOOT_DEPENDENCIES += host-dtc
		endif

		# Helper function to fill the U-Boot config.h file.
		# Argument 1: option name
		# Argument 2: option value