1 files changed, 139 insertions, 0 deletions
diff --git a/Android.mk b/Android.mk
new file mode 100644
index 000000000..b0cccf8fe
--- /dev/null
+++ b/Android.mk
@@ -0,0 +1,139 @@
+LOCAL_PATH := $(call my-dir)
+KERNEL_ROOT_DIR := $(PWD)
+
+define touch-kernel-image-timestamp
+if [ -e $(1) ] && [ -e $(2) ] && cmp -s $(1) $(2); then \
+ echo $(2) has no change;\
+ mv -f $(1) $(2);\
+else \
+ rm -f $(1);\
+fi
+endef
+
+define move-kernel-module-files
+v=`cat $(2)/include/config/kernel.release`;\
+for i in `grep -h '\.ko' /dev/null $(2)/.tmp_versions/*.mod`; do \
+ o=`basename $$i`;\
+ if [ -e $(1)/lib/modules/$$o ] && cmp -s $(1)/lib/modules/$$v/kernel/$$i $(1)/lib/modules/$$o; then \
+  echo $(1)/lib/modules/$$o has no change;\
+ else \
+  echo Update $(1)/lib/modules/$$o;\
+  mv -f $(1)/lib/modules/$$v/kernel/$$i $(1)/lib/modules/$$o;\
+ fi;\
+done
+endef
+
+define clean-kernel-module-dirs
+rm -rf $(1)/lib/modules/$(if $(2),`cat $(2)/include/config/kernel.release`,*/)
+endef
+
+# '\\' in command is wrongly replaced to '\\\\' in kernel/out/arch/arm/boot/compressed/.piggy.xzkern.cmd
+define fixup-kernel-cmd-file
+if [ -e $(1) ]; then cp $(1) $(1).bak; sed -e 's/\\\\\\\\/\\\\/g' < $(1).bak > $(1); rm -f $(1).bak; fi
+endef
+
+ifeq ($(notdir $(LOCAL_PATH)),$(strip $(LINUX_KERNEL_VERSION)))
+ifneq ($(strip $(TARGET_NO_KERNEL)),true)
+    KERNEL_DIR := $(LOCAL_PATH)
+    BUILT_SYSTEMIMAGE := $(call intermediates-dir-for,PACKAGING,systemimage)/system.img
+
+  ifeq ($(KERNEL_CROSS_COMPILE),)
+  ifeq ($(TARGET_ARCH), arm64)
+    KERNEL_CROSS_COMPILE := $(KERNEL_ROOT_DIR)/$(TARGET_TOOLS_PREFIX)
+  else
+    KERNEL_CROSS_COMPILE := $(KERNEL_ROOT_DIR)/prebuilts/gcc/$(HOST_PREBUILT_TAG)/arm/arm-eabi-$(TARGET_GCC_VERSION)/bin/arm-eabi-
+  endif
+  endif
+  ifeq ($(wildcard $(TARGET_PREBUILT_KERNEL)),)
+    KERNEL_OUT ?= $(if $(filter /% ~%,$(TARGET_OUT_INTERMEDIATES)),,$(KERNEL_ROOT_DIR)/)$(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ
+    ifeq ($(TARGET_ARCH), arm64)
+      ifeq ($(MTK_APPENDED_DTB_SUPPORT), yes)
+        KERNEL_ZIMAGE_OUT := $(KERNEL_OUT)/arch/$(TARGET_ARCH)/boot/Image.gz-dtb
+      else
+        KERNEL_ZIMAGE_OUT := $(KERNEL_OUT)/arch/$(TARGET_ARCH)/boot/Image.gz
+      endif
+    else
+      ifeq ($(MTK_APPENDED_DTB_SUPPORT), yes)
+        KERNEL_ZIMAGE_OUT := $(KERNEL_OUT)/arch/$(TARGET_ARCH)/boot/zImage-dtb
+      else
+        KERNEL_ZIMAGE_OUT := $(KERNEL_OUT)/arch/$(TARGET_ARCH)/boot/zImage
+      endif
+    endif
+    BUILT_KERNEL_TARGET := $(KERNEL_ZIMAGE_OUT).bin
+    INSTALLED_KERNEL_TARGET := $(PRODUCT_OUT)/kernel
+    TARGET_KERNEL_CONFIG := $(KERNEL_OUT)/.config
+    KERNEL_HEADERS_INSTALL := $(KERNEL_OUT)/usr
+    KERNEL_CONFIG_FILE := $(KERNEL_DIR)/arch/$(TARGET_ARCH)/configs/$(KERNEL_DEFCONFIG)
+    KERNEL_CONFIG_MODULES := $(shell grep ^CONFIG_MODULES=y $(KERNEL_CONFIG_FILE))
+    KERNEL_MODULES_OUT := $(if $(filter /% ~%,$(TARGET_OUT)),,$(KERNEL_ROOT_DIR)/)$(TARGET_OUT)
+    KERNEL_MODULES_DEPS := $(if $(wildcard $(KERNEL_MODULES_OUT)/lib/modules/*.ko),$(wildcard $(KERNEL_MODULES_OUT)/lib/modules/*.ko),$(KERNEL_MODULES_OUT)/lib/modules)
+    KERNEL_MODULES_SYMBOLS_OUT := $(if $(filter /% ~%,$(TARGET_OUT_UNSTRIPPED)),,$(KERNEL_ROOT_DIR)/)$(TARGET_OUT_UNSTRIPPED)/system
+    KERNEL_MAKE_OPTION := O=$(KERNEL_OUT) ARCH=$(TARGET_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) ROOTDIR=$(KERNEL_ROOT_DIR) $(if $(strip $(SHOW_COMMANDS)),V=1)
+
+# .config cannot be PHONY due to config_data.gz
+$(TARGET_KERNEL_CONFIG): $(KERNEL_CONFIG_FILE)
+	$(hide) mkdir -p $(KERNEL_OUT)
+	$(MAKE) -C $(KERNEL_DIR) $(KERNEL_MAKE_OPTION) $(KERNEL_DEFCONFIG)
+
+$(KERNEL_MODULES_DEPS): $(KERNEL_ZIMAGE_OUT) ;
+
+$(KERNEL_ZIMAGE_OUT): $(TARGET_KERNEL_CONFIG) FORCE
+	$(hide) mkdir -p $(KERNEL_OUT)
+	$(MAKE) -C $(KERNEL_DIR) $(KERNEL_MAKE_OPTION)
+	$(hide) $(call fixup-kernel-cmd-file,$(KERNEL_OUT)/arch/$(TARGET_ARCH)/boot/compressed/.piggy.xzkern.cmd)
+ifneq ($(KERNEL_CONFIG_MODULES),)
+	$(MAKE) -C $(KERNEL_DIR) $(KERNEL_MAKE_OPTION) modules
+	$(MAKE) -C $(KERNEL_DIR) $(KERNEL_MAKE_OPTION) INSTALL_MOD_PATH=$(KERNEL_MODULES_SYMBOLS_OUT) modules_install
+	$(hide) $(call move-kernel-module-files,$(KERNEL_MODULES_SYMBOLS_OUT),$(KERNEL_OUT))
+	$(hide) $(call clean-kernel-module-dirs,$(KERNEL_MODULES_SYMBOLS_OUT),$(KERNEL_OUT))
+	$(MAKE) -C $(KERNEL_DIR) $(KERNEL_MAKE_OPTION) INSTALL_MOD_PATH=$(KERNEL_MODULES_OUT) modules_install
+	$(hide) $(call move-kernel-module-files,$(KERNEL_MODULES_OUT),$(KERNEL_OUT))
+	$(hide) $(call clean-kernel-module-dirs,$(KERNEL_MODULES_OUT),$(KERNEL_OUT))
+endif
+
+ifeq ($(strip $(MTK_HEADER_SUPPORT)), yes)
+$(BUILT_KERNEL_TARGET): $(KERNEL_ZIMAGE_OUT) $(TARGET_KERNEL_CONFIG) | $(HOST_OUT_EXECUTABLES)/mkimage$(HOST_EXECUTABLE_SUFFIX)
+	$(hide) $(HOST_OUT_EXECUTABLES)/mkimage$(HOST_EXECUTABLE_SUFFIX) $< KERNEL 0xffffffff > $@
+
+else
+$(BUILT_KERNEL_TARGET): $(KERNEL_ZIMAGE_OUT) $(TARGET_KERNEL_CONFIG) | $(ACP)
+	$(copy-file-to-target)
+
+endif
+
+$(TARGET_PREBUILT_KERNEL): $(BUILT_KERNEL_TARGET) | $(ACP)
+	$(copy-file-to-new-target)
+
+  else
+    BUILT_KERNEL_TARGET := $(TARGET_PREBUILT_KERNEL)
+  endif#TARGET_PREBUILT_KERNEL
+
+$(INSTALLED_KERNEL_TARGET): $(BUILT_KERNEL_TARGET) | $(ACP)
+	$(copy-file-to-target)
+
+ifneq ($(KERNEL_CONFIG_MODULES),)
+$(BUILT_SYSTEMIMAGE): $(KERNEL_MODULES_DEPS)
+endif
+
+.PHONY: kernel install-kernel savedefconfig-kernel %config-kernel clean-kernel
+kernel: $(INSTALLED_KERNEL_TARGET)
+all_modules: $(INSTALLED_KERNEL_TARGET)
+save-kernel: $(TARGET_PREBUILT_KERNEL)
+
+#TODO
+savedefconfig-kernel:
+
+%config-kernel:
+	$(hide) mkdir -p $(KERNEL_OUT)
+	$(MAKE) -C $(KERNEL_DIR) $(KERNEL_MAKE_OPTION) $(patsubst %config-kernel,%config,$@)
+
+clean-kernel:
+	$(hide) rm -rf $(KERNEL_OUT) $(KERNEL_MODULES_OUT) $(INSTALLED_KERNEL_TARGET)
+
+droid: check-kernel-config
+check-mtk-config: check-kernel-config
+check-kernel-config:
+	-python device/mediatek/build/build/tools/check_kernel_config.py -c $(MTK_TARGET_PROJECT_FOLDER)/ProjectConfig.mk -k $(KERNEL_DIR)/arch/$(TARGET_ARCH)/configs/$(KERNEL_DEFCONFIG) -p $(MTK_PROJECT_NAME)
+
+endif#TARGET_NO_KERNEL
+endif#LINUX_KERNEL_VERSION