PERL = perl

ifeq ($(TARGET_PREBUILT_KERNEL),)

KERNEL_OUT := $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ

KERNEL_CONFIG := $(KERNEL_OUT)/.config

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

KERNEL_HEADERS_INSTALL := $(KERNEL_OUT)/usr

KERNEL_MODULES_INSTALL := system

KERNEL_MODULES_OUT := $(TARGET_OUT)/lib/modules

KERNEL_IMG=$(KERNEL_OUT)/arch/arm/boot/Image

MSM_ARCH ?= $(shell $(PERL) -e 'while (<>) {$$a = $$1 if /CONFIG_ARCH_((?:MSM|QSD)[a-zA-Z0-9]+)=y/; $$r = $$1 if /CONFIG_MSM_SOC_REV_(?!NONE)(\w+)=y/;} print lc("$$a$$r\n");' $(KERNEL_CONFIG))

KERNEL_USE_OF ?= $(shell $(PERL) -e '$$of = "n"; while (<>) { if (/CONFIG_USE_OF=y/) { $$of = "y"; break; } } print $$of;' kernel/arch/arm/configs/$(KERNEL_DEFCONFIG))

ifeq "$(KERNEL_USE_OF)" "y"

DTS_NAME ?= $(MSM_ARCH)

DTS_FILES = $(wildcard $(TOP)/kernel/arch/arm/boot/dts/$(DTS_NAME)*.dts)

DTS_FILE = $(lastword $(subst /, ,$(1)))

DTB_FILE = $(addprefix $(KERNEL_OUT)/arch/arm/boot/,$(patsubst %.dts,%.dtb,$(call DTS_FILE,$(1))))

ZIMG_FILE = $(addprefix $(KERNEL_OUT)/arch/arm/boot/,$(patsubst %.dts,%-zImage,$(call DTS_FILE,$(1))))

KERNEL_ZIMG = $(KERNEL_OUT)/arch/arm/boot/zImage

DTC = $(KERNEL_OUT)/scripts/dtc/dtc

define append-dtb

mkdir -p $(KERNEL_OUT)/arch/arm/boot;\

define append-dtb

ifeq ($(TARGET_USES_UNCOMPRESSED_KERNEL),true)

$(info Using uncompressed kernel)

TARGET_PREBUILT_KERNEL := $(KERNEL_OUT)/piggy

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

define clean-module-folder

mdpath=`find $(KERNEL_MODULES_OUT) -type f -name modules.dep`;\

if [ "$$mdpath" != "" ];then\

mpath=`dirname $$mdpath`; rm -rf $$mpath;\

fi

$(KERNEL_OUT):

mkdir -p $(KERNEL_OUT)

$(KERNEL_CONFIG): $(KERNEL_OUT)

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

$(KERNEL_OUT)/piggy : $(TARGET_PREBUILT_INT_KERNEL)

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

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

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

$(mv-modules)

$(clean-module-folder)

$(append-dtb)

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

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

kerneltags: $(KERNEL_OUT) $(KERNEL_CONFIG)

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

kernelconfig: $(KERNEL_OUT) $(KERNEL_CONFIG)

env KCONFIG_NOTIMESTAMP=true \

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