AndroidKernel.mk

   1 KERNEL_OUT := $(TARGET_OUT_INTERMEDIATES)/KERNEL
   2 KERNEL_CONFIG := $(KERNEL_OUT)/.config
   3 KERNEL_MODULES_OUT := $(TARGET_ROOT_OUT)/lib/modules
   4
   5 ifeq ($(TARGET_ARCH),arm64)
   6 ARCH_ := arm64
   7 CROSS_COMPILE_ := aarch64-linux-android-
   8 else
   9 ARCH_ := arm
  10 CROSS_COMPILE_ := arm-eabi-
  11 endif
  12
  13 JOBS := $(shell if [ $(cat /proc/cpuinfo | grep processor | wc -l) -gt 8 ]; then echo 8; else echo 4; fi)
  14
  15 ifeq ($(USES_UNCOMPRESSED_KERNEL),true)
  16 TARGET_PREBUILT_KERNEL := $(KERNEL_OUT)/arch/$(ARCH_)/boot/Image
  17 else
  18 TARGET_PREBUILT_KERNEL := $(KERNEL_OUT)/arch/$(ARCH_)/boot/zImage
  19 endif
  20
  21 $(KERNEL_OUT):
  22         @echo "==== Start Kernel Compiling ... ===="
  23
  24
  25 $(KERNEL_CONFIG): kernel/arch/$(ARCH_)/configs/$(KERNEL_DEFCONFIG)
  26         echo "KERNEL_OUT = $KERNEL_OUT,  KERNEL_DEFCONFIG = KERNEL_DEFCONFIG"
  27         mkdir -p $(KERNEL_OUT)
  28         $(MAKE) ARCH=$(ARCH_) -C kernel O=../$(KERNEL_OUT) $(KERNEL_DEFCONFIG)
  29
  30 ifeq ($(TARGET_BUILD_VARIANT),user)
  31 DEBUGMODE := BUILD=no
  32 USER_CONFIG := $(TARGET_OUT)/dummy
  33 TARGET_DEVICE_USER_CONFIG := $(PLATDIR)/user_diff_config
  34 TARGET_DEVICE_CUSTOM_CONFIG := device/sprd/$(TARGET_DEVICE)/ProjectConfig.mk
  35 $(USER_CONFIG) : $(KERNEL_CONFIG)
  36         $(info $(shell ./kernel/scripts/sprd_custom_config_kernel.sh $(KERNEL_CONFIG) $(TARGET_DEVICE_CUSTOM_CONFIG)))
  37         $(info $(shell ./kernel/scripts/sprd_create_user_config.sh $(KERNEL_CONFIG) $(TARGET_DEVICE_USER_CONFIG)))
  38 else
  39 DEBUGMODE := $(DEBUGMODE)
  40 USER_CONFIG  := $(TARGET_OUT)/dummy
  41 TARGET_DEVICE_CUSTOM_CONFIG := device/sprd/$(TARGET_DEVICE)/ProjectConfig.mk
  42 $(USER_CONFIG) : $(KERNEL_CONFIG)
  43         $(info $(shell ./kernel/scripts/sprd_custom_config_kernel.sh $(KERNEL_CONFIG) $(TARGET_DEVICE_CUSTOM_CONFIG)))
  44 endif
  45
  46 $(TARGET_PREBUILT_KERNEL) : $(KERNEL_OUT) $(USER_CONFIG)  | $(KERNEL_CONFIG)
  47         $(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(ARCH_) CROSS_COMPILE=$(CROSS_COMPILE_) headers_install
  48         $(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(ARCH_) CROSS_COMPILE=$(CROSS_COMPILE_) -j${JOBS}
  49         $(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(ARCH_) CROSS_COMPILE=$(CROSS_COMPILE_) modules
  50         @-mkdir -p $(KERNEL_MODULES_OUT)
  51         @-find $(TARGET_OUT_INTERMEDIATES) -name *.ko ! -name mali.ko | xargs -I{} cp {} $(KERNEL_MODULES_OUT)
  52         @-find $(KERNEL_MODULES_OUT) -name *.ko ! -name mali.ko -exec $(CROSS_COMPILE_)strip -d --strip-unneeded {} \;
  53
  54 kernelheader:
  55         mkdir -p $(KERNEL_OUT)
  56         $(MAKE) ARCH=$(ARCH_) -C kernel O=../$(KERNEL_OUT) headers_install