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AndroidKernel.mk
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AndroidKernel.mk
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#Android makefile to build kernel as a part of Android Build
PERL = perl
KERNEL_TARGET := $(strip $(INSTALLED_KERNEL_TARGET))
ifeq ($(KERNEL_TARGET),)
INSTALLED_KERNEL_TARGET := $(PRODUCT_OUT)/kernel
endif
TARGET_KERNEL_ARCH := $(strip $(TARGET_KERNEL_ARCH))
ifeq ($(TARGET_KERNEL_ARCH),)
KERNEL_ARCH := arm
else
KERNEL_ARCH := $(TARGET_KERNEL_ARCH)
endif
TARGET_KERNEL_HEADER_ARCH := $(strip $(TARGET_KERNEL_HEADER_ARCH))
ifeq ($(TARGET_KERNEL_HEADER_ARCH),)
KERNEL_HEADER_ARCH := $(KERNEL_ARCH)
else
$(warning Forcing kernel header generation only for '$(TARGET_KERNEL_HEADER_ARCH)')
KERNEL_HEADER_ARCH := $(TARGET_KERNEL_HEADER_ARCH)
endif
KERNEL_HEADER_DEFCONFIG := $(strip $(KERNEL_HEADER_DEFCONFIG))
ifeq ($(KERNEL_HEADER_DEFCONFIG),)
KERNEL_HEADER_DEFCONFIG := $(KERNEL_DEFCONFIG)
endif
# Force 32-bit binder IPC for 64bit kernel with 32bit userspace
ifeq ($(KERNEL_ARCH),arm64)
ifeq ($(TARGET_ARCH),arm)
KERNEL_CONFIG_OVERRIDE := CONFIG_ANDROID_BINDER_IPC_32BIT=y
endif
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_GCC_NOANDROID_CHK := $(shell (echo "int main() {return 0;}" | $(KERNEL_CROSS_COMPILE)gcc -E -mno-android - > /dev/null 2>&1 ; echo $$?))
ifeq ($(strip $(KERNEL_GCC_NOANDROID_CHK)),0)
KERNEL_CFLAGS := KCFLAGS=-mno-android
endif
KERNEL_OUT := $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ
KERNEL_CONFIG := $(KERNEL_OUT)/.config
ifeq ($(KERNEL_DEFCONFIG)$(wildcard $(KERNEL_CONFIG)),)
$(error Kernel configuration not defined, cannot build kernel)
else
ifeq ($(TARGET_USES_UNCOMPRESSED_KERNEL),true)
$(info Using uncompressed kernel)
TARGET_PREBUILT_INT_KERNEL := $(KERNEL_OUT)/arch/$(KERNEL_ARCH)/boot/Image
else
TARGET_PREBUILT_INT_KERNEL := $(KERNEL_OUT)/arch/$(KERNEL_ARCH)/boot/zImage
endif
ifeq ($(TARGET_KERNEL_APPEND_DTB), true)
$(info Using appended DTB)
TARGET_PREBUILT_INT_KERNEL := $(TARGET_PREBUILT_INT_KERNEL)-dtb
endif
KERNEL_HEADERS_INSTALL := $(KERNEL_OUT)/usr
KERNEL_MODULES_INSTALL := system
KERNEL_MODULES_OUT := $(TARGET_OUT)/lib/modules
TARGET_PREBUILT_KERNEL := $(TARGET_PREBUILT_INT_KERNEL)
define mv-modules
mdpath=`find $(KERNEL_MODULES_OUT) -type f -name modules.dep`;\
if [ "$$mdpath" != "" ];then\
mpath=`dirname $$mdpath`;\
ko=`find $$mpath/kernel -type f -name *.ko`;\
for i in $$ko; do mv $$i $(KERNEL_MODULES_OUT)/; done;\
fi
endef
define clean-module-folder
mdpath=`find $(KERNEL_MODULES_OUT) -type f -name modules.dep`;\
if [ "$$mdpath" != "" ];then\
mpath=`dirname $$mdpath`; rm -rf $$mpath;\
fi
endef
$(KERNEL_OUT):
mkdir -p $(KERNEL_OUT)
$(KERNEL_CONFIG): $(KERNEL_OUT)
$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(KERNEL_DEFCONFIG)
$(hide) if [ ! -z "$(KERNEL_CONFIG_OVERRIDE)" ]; then \
echo "Overriding kernel config with '$(KERNEL_CONFIG_OVERRIDE)'"; \
echo $(KERNEL_CONFIG_OVERRIDE) >> $(KERNEL_OUT)/.config; \
$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) oldconfig; fi
$(TARGET_PREBUILT_INT_KERNEL): $(KERNEL_OUT) $(KERNEL_HEADERS_INSTALL)
$(hide) echo "Building kernel..."
$(hide) rm -rf $(KERNEL_OUT)/arch/$(KERNEL_ARCH)/boot/dts
$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(KERNEL_CFLAGS)
$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(KERNEL_CFLAGS) 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)
$(clean-module-folder)
ifeq ($(PRODUCT_SUPPORT_EXFAT), y)
ifneq ($(PRODUCT_SUPPORT_OPEN_EXFAT), y)
@cp -f $(ANDROID_BUILD_TOP)/kernel/tuxera_update.sh $(ANDROID_BUILD_TOP)
@sh tuxera_update.sh --target target/lg.d/mobile-msm8939-arm64-4.9 --use-cache --latest --max-cache-entries 2 --source-dir $(ANDROID_BUILD_TOP)/kernel --output-dir $(ANDROID_BUILD_TOP)/$(KERNEL_OUT) -a --user lg-mobile --pass AumlTsj0ou
@tar -xzf tuxera-*.tgz
@mkdir -p $(TARGET_OUT_EXECUTABLES)
@cp $(ANDROID_BUILD_TOP)/tuxera-*/exfat/kernel-module/texfat.ko $(ANDROID_BUILD_TOP)/$(TARGET_OUT_EXECUTABLES)/../lib/modules/
@cp $(ANDROID_BUILD_TOP)/tuxera-*/exfat/tools/* $(TARGET_OUT_EXECUTABLES)
@cp $(ANDROID_BUILD_TOP)/tuxera-*/ntfs/kernel-module/tntfs.ko $(ANDROID_BUILD_TOP)/$(TARGET_OUT_EXECUTABLES)/../lib/modules/
@cp $(ANDROID_BUILD_TOP)/tuxera-*/ntfs/tools/* $(TARGET_OUT_EXECUTABLES)
perl $(ANDROID_BUILD_TOP)/kernel/scripts/sign-file sha1 $(ANDROID_BUILD_TOP)/$(KERNEL_OUT)/signing_key.priv $(ANDROID_BUILD_TOP)/$(KERNEL_OUT)/signing_key.x509 $(ANDROID_BUILD_TOP)/$(KERNEL_MODULES_OUT)/texfat.ko
perl $(ANDROID_BUILD_TOP)/kernel/scripts/sign-file sha1 $(ANDROID_BUILD_TOP)/$(KERNEL_OUT)/signing_key.priv $(ANDROID_BUILD_TOP)/$(KERNEL_OUT)/signing_key.x509 $(ANDROID_BUILD_TOP)/$(KERNEL_MODULES_OUT)/tntfs.ko
@rm -f kheaders*.tar.bz2
@rm -f tuxera-*.tgz
@rm -rf tuxera-*
@rm -f tuxera_update.sh
endif
endif
ifeq ($(TARGET_CARRIER), SPR)
ifeq ($(TARGET_BUILD_VARIANT), user)
perl $(ANDROID_BUILD_TOP)/kernel/scripts/sign-file sha1 \
$(ANDROID_BUILD_TOP)/$(KERNEL_OUT)/signing_key.priv $(ANDROID_BUILD_TOP)/$(KERNEL_OUT)/signing_key.x509 \
$(ANDROID_BUILD_TOP)/device/lge/$(MYDEVICE)/$(TARGET_PRODUCT)/products/itson/systemassets/system/lib/modules/itson_module1_user.ko \
$(ANDROID_BUILD_TOP)/$(KERNEL_MODULES_OUT)/itson_module1.ko
perl $(ANDROID_BUILD_TOP)/kernel/scripts/sign-file sha1 \
$(ANDROID_BUILD_TOP)/$(KERNEL_OUT)/signing_key.priv $(ANDROID_BUILD_TOP)/$(KERNEL_OUT)/signing_key.x509 \
$(ANDROID_BUILD_TOP)/device/lge/$(MYDEVICE)/$(TARGET_PRODUCT)/products/itson/systemassets/system/lib/modules/itson_module2_user.ko \
$(ANDROID_BUILD_TOP)/$(KERNEL_MODULES_OUT)/itson_module2.ko
else
perl $(ANDROID_BUILD_TOP)/kernel/scripts/sign-file sha1 \
$(ANDROID_BUILD_TOP)/$(KERNEL_OUT)/signing_key.priv $(ANDROID_BUILD_TOP)/$(KERNEL_OUT)/signing_key.x509 \
$(ANDROID_BUILD_TOP)/device/lge/$(MYDEVICE)/$(TARGET_PRODUCT)/products/itson/systemassets/system/lib/modules/itson_module1_debug.ko \
$(ANDROID_BUILD_TOP)/$(KERNEL_MODULES_OUT)/itson_module1.ko
perl $(ANDROID_BUILD_TOP)/kernel/scripts/sign-file sha1 \
$(ANDROID_BUILD_TOP)/$(KERNEL_OUT)/signing_key.priv $(ANDROID_BUILD_TOP)/$(KERNEL_OUT)/signing_key.x509 \
$(ANDROID_BUILD_TOP)/device/lge/$(MYDEVICE)/$(TARGET_PRODUCT)/products/itson/systemassets/system/lib/modules/itson_module2_debug.ko \
$(ANDROID_BUILD_TOP)/$(KERNEL_MODULES_OUT)/itson_module2.ko
endif
endif
# porting bootchart2 to android
ifeq ($(INIT_BOOTCHART2),true)
ifeq ($(TARGET_DEVICE),$(filter $(TARGET_DEVICE), altev2))
KERNEL_DEFCONFIG_PATH:=kernel/arch/arm64/configs/$(KERNEL_DEFCONFIG)
KERNEL_DEFCONFIG_BC2_PATH:=kernel/arch/arm64/configs/bc2_$(KERNEL_DEFCONFIG)
else
KERNEL_DEFCONFIG_PATH:=kernel/arch/arm/configs/$(KERNEL_DEFCONFIG)
KERNEL_DEFCONFIG_BC2_PATH:=kernel/arch/arm/configs/bc2_$(KERNEL_DEFCONFIG)
endif
bootchart2defconfig:
cp -f $(KERNEL_DEFCONFIG_PATH) $(KERNEL_DEFCONFIG_BC2_PATH)
echo "CONFIG_TASKSTATS=y" >> $(KERNEL_DEFCONFIG_BC2_PATH)
echo "CONFIG_TASK_DELAY_ACCT=y" >> $(KERNEL_DEFCONFIG_BC2_PATH)
echo "CONFIG_TASK_XACCT=y" >> $(KERNEL_DEFCONFIG_BC2_PATH)
echo "CONFIG_TASK_IO_ACCOUNTING=y" >> $(KERNEL_DEFCONFIG_BC2_PATH)
echo "CONFIG_CONNECTOR=y" >> $(KERNEL_DEFCONFIG_BC2_PATH)
echo "CONFIG_PROC_EVENTS=y" >> $(KERNEL_DEFCONFIG_BC2_PATH)
$(KERNEL_HEADERS_INSTALL): $(KERNEL_OUT) bootchart2defconfig
$(hide) if [ ! -z "$(KERNEL_HEADER_DEFCONFIG)" ]; then \
$(hide) rm -f ../bc2_$(KERNEL_CONFIG); \
$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_HEADER_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) bc2_$(KERNEL_HEADER_DEFCONFIG); \
$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_HEADER_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) headers_install; fi
$(hide) if [ "$(KERNEL_HEADER_DEFCONFIG)" != "bc2_$(KERNEL_DEFCONFIG)" ]; then \
echo "Used a different defconfig for header generation"; \
$(hide) rm -f ../$(KERNEL_CONFIG); \
$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) bc2_$(KERNEL_DEFCONFIG); fi
$(hide) if [ ! -z "$(KERNEL_CONFIG_OVERRIDE)" ]; then \
echo "Overriding kernel config with '$(KERNEL_CONFIG_OVERRIDE)'"; \
echo $(KERNEL_CONFIG_OVERRIDE) >> $(KERNEL_OUT)/.config; \
$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) oldconfig; fi
else
$(KERNEL_HEADERS_INSTALL): $(KERNEL_OUT)
$(hide) if [ ! -z "$(KERNEL_HEADER_DEFCONFIG)" ]; then \
$(hide) rm -f ../$(KERNEL_CONFIG); \
$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_HEADER_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(KERNEL_HEADER_DEFCONFIG); \
$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_HEADER_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) headers_install; fi
$(hide) if [ "$(KERNEL_HEADER_DEFCONFIG)" != "$(KERNEL_DEFCONFIG)" ]; then \
echo "Used a different defconfig for header generation"; \
$(hide) rm -f ../$(KERNEL_CONFIG); \
$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(KERNEL_DEFCONFIG); fi
$(hide) if [ ! -z "$(KERNEL_CONFIG_OVERRIDE)" ]; then \
echo "Overriding kernel config with '$(KERNEL_CONFIG_OVERRIDE)'"; \
echo $(KERNEL_CONFIG_OVERRIDE) >> $(KERNEL_OUT)/.config; \
$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) oldconfig; fi
endif
kerneltags: $(KERNEL_OUT) $(KERNEL_CONFIG)
$(MAKE) -C kernel O=../$(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=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) menuconfig
env KCONFIG_NOTIMESTAMP=true \
$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) savedefconfig
cp $(KERNEL_OUT)/defconfig kernel/arch/$(KERNEL_ARCH)/configs/$(KERNEL_DEFCONFIG)
endif
endif