diff options
Diffstat (limited to 'build/tasks/kernel.mk')
| -rw-r--r-- | build/tasks/kernel.mk | 311 |
1 files changed, 0 insertions, 311 deletions
diff --git a/build/tasks/kernel.mk b/build/tasks/kernel.mk deleted file mode 100644 index e5e59604..00000000 --- a/build/tasks/kernel.mk +++ /dev/null @@ -1,311 +0,0 @@ -# Copyright (C) 2012 The CyanogenMod Project -# (C) 2017 The LineageOS Project -# -# Licensed under the Apache License, Version 2.0 (the "License"); -# you may not use this file except in compliance with the License. -# You may obtain a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, -# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -# See the License for the specific language governing permissions and -# limitations under the License. - - -# Android makefile to build kernel as a part of Android Build -# -# Configuration -# ============= -# -# These config vars are usually set in BoardConfig.mk: -# -# TARGET_KERNEL_CONFIG = Kernel defconfig -# TARGET_KERNEL_VARIANT_CONFIG = Variant defconfig, optional -# TARGET_KERNEL_SELINUX_CONFIG = SELinux defconfig, optional -# TARGET_KERNEL_ADDITIONAL_CONFIG = Additional defconfig, optional -# -# TARGET_KERNEL_CLANG_COMPILE = Compile kernel with clang, defaults to false -# -# TARGET_KERNEL_CLANG_VERSION = Clang prebuilts version, optional, defaults to clang-stable -# -# TARGET_KERNEL_CLANG_PATH = Clang prebuilts path, optional -# -# BOARD_KERNEL_IMAGE_NAME = Built image name -# for ARM use: zImage -# for ARM64 use: Image.gz -# for uncompressed use: Image -# If using an appended DT, append '-dtb' -# to the end of the image name. -# For example, for ARM devices, -# use zImage-dtb instead of zImage. -# -# KERNEL_CC = The C Compiler used. This is automatically set based -# on whether the clang version is set, optional. -# -# KERNEL_CLANG_TRIPLE = Target triple for clang (e.g. aarch64-linux-gnu-) -# defaults to arm-linux-gnu- for arm -# aarch64-linux-gnu- for arm64 -# x86_64-linux-gnu- for x86 -# -# NEED_KERNEL_MODULE_ROOT = Optional, if true, install kernel -# modules in root instead of vendor -# NEED_KERNEL_MODULE_SYSTEM = Optional, if true, install kernel -# modules in system instead of vendor - -ifneq ($(TARGET_NO_KERNEL),true) - -## Externally influenced variables -KERNEL_SRC := $(TARGET_KERNEL_SOURCE) -# kernel configuration - mandatory -KERNEL_DEFCONFIG := $(TARGET_KERNEL_CONFIG) -VARIANT_DEFCONFIG := $(TARGET_KERNEL_VARIANT_CONFIG) -SELINUX_DEFCONFIG := $(TARGET_KERNEL_SELINUX_CONFIG) - -## Internal variables -KERNEL_OUT := $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ -KERNEL_CONFIG := $(KERNEL_OUT)/.config -KERNEL_RELEASE := $(KERNEL_OUT)/include/config/kernel.release - -ifeq ($(KERNEL_ARCH),x86_64) -KERNEL_DEFCONFIG_ARCH := x86 -else -KERNEL_DEFCONFIG_ARCH := $(KERNEL_ARCH) -endif -KERNEL_DEFCONFIG_SRC := $(KERNEL_SRC)/arch/$(KERNEL_DEFCONFIG_ARCH)/configs/$(KERNEL_DEFCONFIG) - -ifeq ($(BOARD_KERNEL_IMAGE_NAME),) -$(error BOARD_KERNEL_IMAGE_NAME not defined.) -endif -TARGET_PREBUILT_INT_KERNEL := $(KERNEL_OUT)/arch/$(KERNEL_ARCH)/boot/$(BOARD_KERNEL_IMAGE_NAME) - -ifneq ($(TARGET_KERNEL_ADDITIONAL_CONFIG),) -KERNEL_ADDITIONAL_CONFIG := $(TARGET_KERNEL_ADDITIONAL_CONFIG) -KERNEL_ADDITIONAL_CONFIG_SRC := $(KERNEL_SRC)/arch/$(KERNEL_ARCH)/configs/$(KERNEL_ADDITIONAL_CONFIG) - ifeq ("$(wildcard $(KERNEL_ADDITIONAL_CONFIG_SRC))","") - $(warning TARGET_KERNEL_ADDITIONAL_CONFIG '$(TARGET_KERNEL_ADDITIONAL_CONFIG)' doesn't exist) - KERNEL_ADDITIONAL_CONFIG_SRC := /dev/null - endif -else - KERNEL_ADDITIONAL_CONFIG_SRC := /dev/null -endif - -ifeq "$(wildcard $(KERNEL_SRC) )" "" - ifneq ($(TARGET_PREBUILT_KERNEL),) - HAS_PREBUILT_KERNEL := true - NEEDS_KERNEL_COPY := true - else - $(foreach cf,$(PRODUCT_COPY_FILES), \ - $(eval _src := $(call word-colon,1,$(cf))) \ - $(eval _dest := $(call word-colon,2,$(cf))) \ - $(ifeq kernel,$(_dest), \ - $(eval HAS_PREBUILT_KERNEL := true))) - endif - - ifneq ($(HAS_PREBUILT_KERNEL),) - $(warning ***************************************************************) - $(warning * Using prebuilt kernel binary instead of source *) - $(warning * THIS IS DEPRECATED, AND WILL BE DISCONTINUED *) - $(warning * Please configure your device to download the kernel *) - $(warning * source repository to $(KERNEL_SRC)) - $(warning * for more information *) - $(warning ***************************************************************) - FULL_KERNEL_BUILD := false - KERNEL_BIN := $(TARGET_PREBUILT_KERNEL) - else - $(warning ***************************************************************) - $(warning * *) - $(warning * No kernel source found, and no fallback prebuilt defined. *) - $(warning * Please make sure your device is properly configured to *) - $(warning * download the kernel repository to $(KERNEL_SRC)) - $(warning * and add the TARGET_KERNEL_CONFIG variable to BoardConfig.mk *) - $(warning * *) - $(warning * As an alternative, define the TARGET_PREBUILT_KERNEL *) - $(warning * variable with the path to the prebuilt binary kernel image *) - $(warning * in your BoardConfig.mk file *) - $(warning * *) - $(warning ***************************************************************) - $(error "NO KERNEL") - endif -else - NEEDS_KERNEL_COPY := true - ifeq ($(TARGET_KERNEL_CONFIG),) - $(warning **********************************************************) - $(warning * Kernel source found, but no configuration was defined *) - $(warning * Please add the TARGET_KERNEL_CONFIG variable to your *) - $(warning * BoardConfig.mk file *) - $(warning **********************************************************) - # $(error "NO KERNEL CONFIG") - else - #$(info Kernel source found, building it) - FULL_KERNEL_BUILD := true - KERNEL_BIN := $(TARGET_PREBUILT_INT_KERNEL) - endif -endif - -ifeq ($(FULL_KERNEL_BUILD),true) - -ifeq ($(NEED_KERNEL_MODULE_ROOT),true) -KERNEL_MODULES_OUT := $(TARGET_ROOT_OUT) -KERNEL_DEPMOD_STAGING_DIR := $(call intermediates-dir-for,PACKAGING,depmod_recovery) -KERNEL_MODULE_MOUNTPOINT := -else ifeq ($(NEED_KERNEL_MODULE_SYSTEM),true) -KERNEL_MODULES_OUT := $(TARGET_OUT) -KERNEL_DEPMOD_STAGING_DIR := $(call intermediates-dir-for,PACKAGING,depmod_system) -KERNEL_MODULE_MOUNTPOINT := system -else -KERNEL_MODULES_OUT := $(TARGET_OUT_VENDOR) -KERNEL_DEPMOD_STAGING_DIR := $(call intermediates-dir-for,PACKAGING,depmod_vendor) -KERNEL_MODULE_MOUNTPOINT := vendor -endif -MODULES_INTERMEDIATES := $(call intermediates-dir-for,PACKAGING,kernel_modules) - -ifeq ($(TARGET_KERNEL_CLANG_COMPILE),true) - ifneq ($(TARGET_KERNEL_CLANG_VERSION),) - # Find the clang-* directory containing the specified version - KERNEL_CLANG_VERSION := $(shell find $(BUILD_TOP)/prebuilts/clang/host/$(HOST_OS)-x86/ -name AndroidVersion.txt -exec grep -l $(TARGET_KERNEL_CLANG_VERSION) "{}" \; | sed -e 's|/AndroidVersion.txt$$||g;s|^.*/||g') - else - # Use the default version of clang if TARGET_KERNEL_CLANG_VERSION hasn't been set by the device config - KERNEL_CLANG_VERSION := $(LLVM_PREBUILTS_VERSION) - endif - TARGET_KERNEL_CLANG_PATH ?= $(BUILD_TOP)/prebuilts/clang/host/$(HOST_OS)-x86/$(KERNEL_CLANG_VERSION)/bin - ifeq ($(KERNEL_ARCH),arm64) - KERNEL_CLANG_TRIPLE ?= CLANG_TRIPLE=aarch64-linux-gnu- - else ifeq ($(KERNEL_ARCH),arm) - KERNEL_CLANG_TRIPLE ?= CLANG_TRIPLE=arm-linux-gnu- - else ifeq ($(KERNEL_ARCH),x86) - KERNEL_CLANG_TRIPLE ?= CLANG_TRIPLE=x86_64-linux-gnu- - endif - PATH_OVERRIDE := PATH=$(TARGET_KERNEL_CLANG_PATH):$$PATH LD_LIBRARY_PATH=$(BUILD_TOP)/prebuilts/clang/host/$(HOST_OS)-x86/$(KERNEL_CLANG_VERSION)/lib64:$$LD_LIBRARY_PATH - ifeq ($(KERNEL_CC),) - KERNEL_CC := CC="$(CCACHE_BIN) clang" - endif -endif - -ifeq ($(TARGET_KERNEL_MODULES),) - TARGET_KERNEL_MODULES := INSTALLED_KERNEL_MODULES -endif - -KERNEL_ADDITIONAL_CONFIG_OUT := $(KERNEL_OUT)/.additional_config - -# Internal implementation of make-kernel-target -# $(1): output path (The value passed to O=) -# $(2): target to build (eg. defconfig, modules, dtbo.img) -define internal-make-kernel-target -$(PATH_OVERRIDE) $(MAKE) $(KERNEL_MAKE_FLAGS) -C $(KERNEL_SRC) O=$(1) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) $(2) -endef - -# Make a kernel target -# $(1): The kernel target to build (eg. defconfig, modules, modules_install) -define make-kernel-target -$(call internal-make-kernel-target,$(KERNEL_OUT),$(1)) -endef - -# Make a DTBO target -# $(1): The DTBO target to build (eg. dtbo.img, defconfig) -define make-dtbo-target -$(call internal-make-kernel-target,$(PRODUCT_OUT)/dtbo,$(1)) -endef - -.PHONY: force_additional_config -$(KERNEL_ADDITIONAL_CONFIG_OUT): force_additional_config - $(hide) cmp -s $(KERNEL_ADDITIONAL_CONFIG_SRC) $@ || cp $(KERNEL_ADDITIONAL_CONFIG_SRC) $@; - -$(KERNEL_CONFIG): $(KERNEL_DEFCONFIG_SRC) $(KERNEL_ADDITIONAL_CONFIG_OUT) - @echo "Building Kernel Config" - $(hide) mkdir -p $(KERNEL_OUT) - $(call make-kernel-target,VARIANT_DEFCONFIG=$(VARIANT_DEFCONFIG) SELINUX_DEFCONFIG=$(SELINUX_DEFCONFIG) $(KERNEL_DEFCONFIG)) - $(hide) if [ ! -z "$(KERNEL_CONFIG_OVERRIDE)" ]; then \ - echo "Overriding kernel config with '$(KERNEL_CONFIG_OVERRIDE)'"; \ - echo $(KERNEL_CONFIG_OVERRIDE) >> $(KERNEL_OUT)/.config; \ - $(call make-kernel-target,oldconfig); \ - fi - # Create defconfig build artifact - $(call make-kernel-target,savedefconfig) - $(hide) if [ ! -z "$(KERNEL_ADDITIONAL_CONFIG)" ]; then \ - echo "Using additional config '$(KERNEL_ADDITIONAL_CONFIG)'"; \ - $(KERNEL_SRC)/scripts/kconfig/merge_config.sh -m -O $(KERNEL_OUT) $(KERNEL_OUT)/.config $(KERNEL_SRC)/arch/$(KERNEL_ARCH)/configs/$(KERNEL_ADDITIONAL_CONFIG); \ - $(call make-kernel-target,KCONFIG_ALLCONFIG=$(KERNEL_OUT)/.config alldefconfig); \ - fi - -.PHONY: TARGET_KERNEL_BINARIES -TARGET_KERNEL_BINARIES: $(KERNEL_CONFIG) - @echo "Building Kernel" - $(call make-kernel-target,$(BOARD_KERNEL_IMAGE_NAME)) - $(hide) if grep -q '^CONFIG_OF=y' $(KERNEL_CONFIG); then \ - echo "Building DTBs"; \ - $(call make-kernel-target,dtbs); \ - fi - $(hide) if grep -q '=m' $(KERNEL_CONFIG); then \ - echo "Building Kernel Modules"; \ - $(call make-kernel-target,modules); \ - fi - -.PHONY: INSTALLED_KERNEL_MODULES -INSTALLED_KERNEL_MODULES: depmod-host - $(hide) if grep -q '=m' $(KERNEL_CONFIG); then \ - echo "Installing Kernel Modules"; \ - $(call make-kernel-target,INSTALL_MOD_PATH=$(MODULES_INTERMEDIATES) modules_install); \ - kernel_release=$$(cat $(KERNEL_RELEASE)) \ - modules=$$(find $(MODULES_INTERMEDIATES)/lib/modules/$$kernel_release -type f -name '*.ko'); \ - for f in $$modules; do \ - $(KERNEL_TOOLCHAIN_PATH)strip --strip-unneeded $$f; \ - done; \ - ($(call build-image-kernel-modules,$$modules,$(KERNEL_MODULES_OUT),$(KERNEL_MODULE_MOUNTPOINT)/,$(KERNEL_DEPMOD_STAGING_DIR))); \ - fi - -$(TARGET_KERNEL_MODULES): TARGET_KERNEL_BINARIES - -$(TARGET_PREBUILT_INT_KERNEL): $(TARGET_KERNEL_MODULES) - -.PHONY: kerneltags -kerneltags: $(KERNEL_CONFIG) - $(hide) mkdir -p $(KERNEL_OUT) - $(call make-kernel-target,tags) - -.PHONY: kernelsavedefconfig alldefconfig - -kernelsavedefconfig: - $(hide) mkdir -p $(KERNEL_OUT) - $(call make-kernel-target,$(KERNEL_DEFCONFIG)) - env KCONFIG_NOTIMESTAMP=true \ - $(call make-kernel-target,savedefconfig) - cp $(KERNEL_OUT)/defconfig $(KERNEL_DEFCONFIG_SRC) - -alldefconfig: - $(hide) mkdir -p $(KERNEL_OUT) - env KCONFIG_NOTIMESTAMP=true \ - $(call make-kernel-target,alldefconfig) - -ifeq ($(TARGET_NEEDS_DTBOIMAGE),true) -BOARD_PREBUILT_DTBOIMAGE = $(PRODUCT_OUT)/dtbo/arch/$(KERNEL_ARCH)/boot/dtbo.img -$(BOARD_PREBUILT_DTBOIMAGE): - echo -e ${CL_GRN}"Building DTBO.img"${CL_RST} - $(call make-dtbo-target,$(KERNEL_DEFCONFIG)) - $(call make-dtbo-target,dtbo.img) -endif # TARGET_NEEDS_DTBOIMAGE - -endif # FULL_KERNEL_BUILD - -## Install it - -ifeq ($(NEEDS_KERNEL_COPY),true) -file := $(INSTALLED_KERNEL_TARGET) -ALL_PREBUILT += $(file) -$(file) : $(KERNEL_BIN) | $(ACP) - $(transform-prebuilt-to-target) - -ALL_PREBUILT += $(INSTALLED_KERNEL_TARGET) -endif - -INSTALLED_DTBOIMAGE_TARGET := $(PRODUCT_OUT)/dtbo.img -ALL_PREBUILT += $(INSTALLED_DTBOIMAGE_TARGET) - -.PHONY: kernel -kernel: $(INSTALLED_KERNEL_TARGET) - -.PHONY: dtboimage -dtboimage: $(INSTALLED_DTBOIMAGE_TARGET) - -endif # TARGET_NO_KERNEL |