u-boot.mk: add support for config customization
Make it possible to easily customize U-Boot config options via new
`UBOOT_CUSTOMIZE_CONFIG` variable, so we don't need to patch config
files or override config step with shell hackery.
This generic approach uses `config` CLI to tweak the .config as needed,
for example:
UBOOT_CUSTOMIZE_CONFIG := \
--enable CMD_EFIDEBUG \
--enable CMD_BOOTMENU \
--enable AUTOBOOT \
--enable AUTOBOOT_MENU_SHOW \
--disable AUTOBOOT_KEYED \
--disable AUTOBOOT_USE_MENUKEY \
--disable BOOTMENU_DISABLE_UBOOT_CONSOLE \
--set-val BOOTDELAY 2
Signed-off-by: Petr Štetiar <ynezz@true.cz>
(cherry picked from commit 186b97590b
)
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@ -83,6 +83,9 @@ endef
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define Build/Configure/U-Boot
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+$(MAKE) $(PKG_JOBS) -C $(PKG_BUILD_DIR) $(UBOOT_CONFIGURE_VARS) $(UBOOT_CONFIG)_config
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$(if $(strip $(UBOOT_CUSTOMIZE_CONFIG)),
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$(PKG_BUILD_DIR)/scripts/config --file $(PKG_BUILD_DIR)/.config $(UBOOT_CUSTOMIZE_CONFIG)
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+$(MAKE) $(PKG_JOBS) -C $(PKG_BUILD_DIR) $(UBOOT_CONFIGURE_VARS) oldconfig)
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endef
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DTC=$(wildcard $(LINUX_DIR)/scripts/dtc/dtc)
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