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Commit 931617e3 authored by David Ng's avatar David Ng
Browse files

AndroidKernel.mk: Parameterize ARCH and CROSS_COMPILE compile flags 



Allow overriding of the ARCH and CROSS_COMPILE parameters passed
to kernel make, with fallback to previous hardcoded values if
the overrides are not defined.

Change-Id: I33b571e22363fdc06eb9b867e13d4487a7b5bf55
Signed-off-by: default avatarDavid Ng <dave@codeaurora.org>
parent 02983880

AndroidKernel.mk

+27 −13
Original line number Diff line number Diff line 
#Android makefile to build kernel as a part of Android Build

PERL		= perl



TARGET_KERNEL_ARCH := $(strip $(TARGET_KERNEL_ARCH))

ifeq ($(TARGET_KERNEL_ARCH),)

KERNEL_ARCH := arm

else

KERNEL_ARCH := $(TARGET_KERNEL_ARCH)

endif



TARGET_KERNEL_CROSS_COMPILE_PREFIX := $(strip $(TARGET_KERNEL_CROSS_COMPILE_PREFIX))

ifeq ($(TARGET_KERNEL_CROSS_COMPILE_PREFIX),)

KERNEL_CROSS_COMPILE := arm-eabi-

else

KERNEL_CROSS_COMPILE := $(TARGET_KERNEL_CROSS_COMPILE_PREFIX)

endif



ifeq ($(TARGET_PREBUILT_KERNEL),)



KERNEL_OUT := $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ

KERNEL_CONFIG := $(KERNEL_OUT)/.config

ifeq ($(TARGET_KERNEL_APPEND_DTB), true)

TARGET_PREBUILT_INT_KERNEL := $(KERNEL_OUT)/arch/arm/boot/zImage-dtb

TARGET_PREBUILT_INT_KERNEL := $(KERNEL_OUT)/arch/$(KERNEL_ARCH)/boot/zImage-dtb

else

TARGET_PREBUILT_INT_KERNEL := $(KERNEL_OUT)/arch/arm/boot/zImage

TARGET_PREBUILT_INT_KERNEL := $(KERNEL_OUT)/arch/$(KERNEL_ARCH)/boot/zImage

endif

KERNEL_HEADERS_INSTALL := $(KERNEL_OUT)/usr

KERNEL_MODULES_INSTALL := system
@@ -41,30 +55,30 @@ $(KERNEL_OUT): 
	mkdir -p $(KERNEL_OUT)



$(KERNEL_CONFIG): $(KERNEL_OUT)

	$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=arm CROSS_COMPILE=arm-eabi- $(KERNEL_DEFCONFIG)

	$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(KERNEL_DEFCONFIG)



$(KERNEL_OUT)/piggy : $(TARGET_PREBUILT_INT_KERNEL)

	$(hide) gunzip -c $(KERNEL_OUT)/arch/arm/boot/compressed/piggy.gzip > $(KERNEL_OUT)/piggy

	$(hide) gunzip -c $(KERNEL_OUT)/arch/$(KERNEL_ARCH)/boot/compressed/piggy.gzip > $(KERNEL_OUT)/piggy



$(TARGET_PREBUILT_INT_KERNEL): $(KERNEL_OUT) $(KERNEL_CONFIG) $(KERNEL_HEADERS_INSTALL)

	$(hide) rm -rf $(KERNEL_OUT)/arch/arm/boot/dts

	$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=arm CROSS_COMPILE=arm-eabi-

	$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=arm CROSS_COMPILE=arm-eabi- modules

	$(MAKE) -C kernel O=../$(KERNEL_OUT) INSTALL_MOD_PATH=../../$(KERNEL_MODULES_INSTALL) INSTALL_MOD_STRIP=1 ARCH=arm CROSS_COMPILE=arm-eabi- modules_install

	$(hide) rm -rf $(KERNEL_OUT)/arch/$(KERNEL_ARCH)/boot/dts

	$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE)

	$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) modules

	$(MAKE) -C kernel O=../$(KERNEL_OUT) INSTALL_MOD_PATH=../../$(KERNEL_MODULES_INSTALL) INSTALL_MOD_STRIP=1 ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) modules_install

	$(mv-modules)

	$(clean-module-folder)



$(KERNEL_HEADERS_INSTALL): $(KERNEL_OUT) $(KERNEL_CONFIG)

	$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=arm CROSS_COMPILE=arm-eabi- headers_install

	$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) headers_install



kerneltags: $(KERNEL_OUT) $(KERNEL_CONFIG)

	$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=arm CROSS_COMPILE=arm-eabi- tags

	$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) tags



kernelconfig: $(KERNEL_OUT) $(KERNEL_CONFIG)

	env KCONFIG_NOTIMESTAMP=true \

	     $(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=arm CROSS_COMPILE=arm-eabi- menuconfig

	     $(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) menuconfig

	env KCONFIG_NOTIMESTAMP=true \

	     $(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=arm CROSS_COMPILE=arm-eabi- savedefconfig

	cp $(KERNEL_OUT)/defconfig kernel/arch/arm/configs/$(KERNEL_DEFCONFIG)

	     $(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) savedefconfig

	cp $(KERNEL_OUT)/defconfig kernel/arch/$(KERNEL_ARCH)/configs/$(KERNEL_DEFCONFIG)



endif