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|
ifneq ($(strip $(SHOW_COMMANDS)),)
KERNEL_VERBOSE="V=1"
endif
KERNEL_TOOLS_PREFIX ?= $(shell sh -c "cd $(TOP); cd `dirname $(TARGET_TOOLS_PREFIX)`; pwd")/$(shell basename $(TARGET_TOOLS_PREFIX))
REALTOP=$(realpath $(TOP))
KERNEL_OUT=$(realpath $(PRODUCT_OUT))/obj/kernel
# Decide on path for kernel
# 1. use TARGET_KERNEL_SOURCE if defined
# 2. try to use kernel/<vendor>/<device> if it exists
# 3. try to use kernel
TARGET_AUTO_KDIR := $(shell echo $(TARGET_DEVICE_DIR) | sed -e 's/^device/kernel/g')
TARGET_KERNEL_SOURCE ?= $(shell if [ -e $(TARGET_AUTO_KDIR) ]; then echo $(TARGET_AUTO_KDIR); else echo kernel; fi;)
KERNEL_SRC := $(TARGET_KERNEL_SOURCE)
ifneq ($(strip $(ANDROID_64)),true)
# Building perf for an architecture different from the kernel's is currently
# not supported.
ifneq ($(strip $(BUILD_TINY_ANDROID)),true)
# We can build perf if it's included in the kernel and has the
# Android compatibility patch in
ifneq ($(wildcard $(KERNEL_SRC)/tools/perf/compat-android.h),)
INCLUDE_PERF ?= 1
ifeq ($(INCLUDE_PERF),1)
PERF_DEP := $(PRODUCT_OUT)/obj/STATIC_LIBRARIES/libelf_intermediates/libelf.a $(TARGET_OUT_SHARED_LIBRARIES)/libc.so
endif
endif
endif
endif
ifeq ($(strip $(ANDROID_64)),true)
KERNEL_TARGET := Image
else
ifeq ($(strip $(TARGET_BOOTLOADER_TYPE)),uboot)
BOOTLOADER_DEP := $(PRODUCT_OUT)/u-boot.bin
KERNEL_TARGET := $(or $(KERNEL_TARGET),uImage)
else
BOOTLOADER_DEP :=
KERNEL_TARGET := $(or $(KERNEL_TARGET),zImage)
endif
endif
ifeq ($(strip $(ANDROID_64)),true)
ARCH := arm64
LOCAL_CFLAGS=
KERNEL_COMPILER_PATHS := $(REALTOP)/gcc-linaro-aarch64-linux-gnu-4.7/bin:../$(BUILD_OUT_EXECUTABLES)
else
ARCH := arm
LOCAL_CFLAGS=$(call cc-option,"-mno-unaligned-access", )
KERNEL_COMPILER_PATHS := ../$(BUILD_OUT_EXECUTABLES)
endif
android_kernel: $(BOOTLOADER_DEP) $(PERF_DEP)
echo building kernel $(KERNEL_TARGET) with config $(KERNEL_CONFIG) for bootloader $(TARGET_BOOTLOADER_TYPE)
mkdir -p $(KERNEL_OUT)
cd $(KERNEL_SRC) &&\
export PATH=$(KERNEL_COMPILER_PATHS):$(PATH) && \
if [ -e $(KERNEL_TOOLS_PREFIX)ld.bfd ]; then LD=$(KERNEL_TOOLS_PREFIX)ld.bfd; else LD=$(KERNEL_TOOLS_PREFIX)ld; fi && \
if [ $(words $(KERNEL_CONFIG)) -gt 1 ]; \
then scripts/kconfig/merge_config.sh -m $(KERNEL_CONFIG) && mv -f .config $(KERNEL_OUT)/.merged.config && $(MAKE) -j1 $(KERNEL_VERBOSE) O=$(KERNEL_OUT) ARCH=$(ARCH) KCONFIG_ALLCONFIG=$(KERNEL_OUT)/.merged.config alldefconfig; \
else $(MAKE) -j1 KCFLAGS="$(TARGET_EXTRA_CFLAGS) -fno-pic $(LOCAL_CFLAGS)" $(KERNEL_VERBOSE) O=$(KERNEL_OUT) ARCH=$(ARCH) CROSS_COMPILE=$(KERNEL_TOOLS_PREFIX) LD=$$LD defconfig $(KERNEL_CONFIG); \
fi && \
$(MAKE) $(KERNEL_VERBOSE) O=$(KERNEL_OUT) ARCH=$(ARCH) CROSS_COMPILE=$(KERNEL_TOOLS_PREFIX) KCFLAGS="$(TARGET_EXTRA_CFLAGS) -fno-pic $(LOCAL_CFLAGS)" LD=$$LD $(KERNEL_TARGET)
ifeq ($(INCLUDE_PERF),1)
export PATH=$(KERNEL_COMPILER_PATHS):$(PATH) &&\
cd $(KERNEL_SRC)/tools/perf &&\
mkdir -p $(KERNEL_OUT)/tools/perf &&\
if [ -e $(TARGET_TOOLS_PREFIX)ld.bfd ]; then LD=$(TARGET_TOOLS_PREFIX)ld.bfd; else LD=$(TARGET_TOOLS_PREFIX)ld; fi && \
$(MAKE) ANDROID_CFLAGS="$(TARGET_EXTRA_CFLAGS) $(LOCAL_CFLAGS) -isystem $(REALTOP)/bionic/libc/include -isystem $(REALTOP)/bionic/libc/kernel/common -isystem $(REALTOP)/bionic/libc/kernel/arch-arm -isystem $(REALTOP)/bionic/libc/arch-arm/include -I$(REALTOP)/external/elfutils/libelf -isystem $(REALTOP)/bionic/libm/include -isystem $(shell dirname $(TARGET_TOOLS_PREFIX))/../include -I$(KERNEL_OUT)/tools/perf" BASIC_LDFLAGS="-nostdlib -Wl,-dynamic-linker,/system/bin/linker,-z,muldefs$(shell if test $(PLATFORM_SDK_VERSION) -lt 16; then echo -ne ',-T$(REALTOP)/$(BUILD_SYSTEM)/armelf.x'; fi),-z,nocopyreloc,--no-undefined -L$(REALTOP)/$(TARGET_OUT_STATIC_LIBRARIES) -L$(REALTOP)/$(PRODUCT_OUT)/system/lib -L$(REALTOP)/external/elfutils -L$(realpath $(PRODUCT_OUT))/obj/STATIC_LIBRARIES/libelf_intermediates -lpthread -lelf -lm -lc $(REALTOP)/$(TARGET_CRTBEGIN_DYNAMIC_O) $(REALTOP)/$(TARGET_CRTEND_O)" $(KERNEL_VERBOSE) O=$(KERNEL_OUT)/tools/perf/ OUTPUT=$(KERNEL_OUT)/tools/perf/ ARCH=$(ARCH) CROSS_COMPILE=$(TARGET_TOOLS_PREFIX) LD=$$LD prefix=/system NO_DWARF=1 NO_NEWT=1 NO_LIBPERL=1 NO_LIBPYTHON=1 NO_GTK2=1 NO_STRLCPY=1 WERROR=0 && \
cp -f $(KERNEL_OUT)/tools/perf/perf $(REALTOP)/$(PRODUCT_OUT)/system/bin/
endif
android_kernel_modules: $(INSTALLED_KERNEL_TARGET) $(ACP)
export PATH=$(KERNEL_COMPILER_PATHS):$(PATH) &&\
cd $(KERNEL_SRC) &&\
if [ -e $(KERNEL_TOOLS_PREFIX)ld.bfd ]; then LD=$(KERNEL_TOOLS_PREFIX)ld.bfd; else LD=$(KERNEL_TOOLS_PREFIX)ld; fi && \
$(MAKE) $(KERNEL_VERBOSE) O=$(KERNEL_OUT) ARCH=$(ARCH) CROSS_COMPILE=$(KERNEL_TOOLS_PREFIX) LD=$$LD EXTRA_CFLAGS="$(EXTRA_CFLAGS) -fno-pic" KCFLAGS="$(TARGET_EXTRA_CFLAGS) -fno-pic $(LOCAL_CFLAGS)" modules
mkdir -p $(KERNEL_OUT)/modules_for_android
cd $(KERNEL_SRC) &&\
if [ -e $(KERNEL_TOOLS_PREFIX)ld.bfd ]; then LD=$(KERNEL_TOOLS_PREFIX)ld.bfd; else LD=$(KERNEL_TOOLS_PREFIX)ld; fi && \
$(MAKE) O=$(KERNEL_OUT) ARCH=$(ARCH) CROSS_COMPILE=$(KERNEL_TOOLS_PREFIX) KCFLAGS="$(TARGET_EXTRA_CFLAGS) -fno-pic $(LOCAL_CFLAGS)" LD=$$LD modules_install INSTALL_MOD_PATH=$(KERNEL_OUT)/modules_for_android
mkdir -p $(TARGET_OUT)/modules
find $(KERNEL_OUT)/modules_for_android -name "*.ko" -exec $(ACP) -fpt {} $(TARGET_OUT)/modules/ \;
#NOTE: the gator driver's Makefile wasn't done properly and doesn't put build
# artifacts in the O=$(KERNEL_OUT)
ifeq ($(TARGET_USE_GATOR),true)
KERNEL_PATH:=$(shell pwd)/$(KERNEL_SRC)
ifneq ($(TARGET_GATOR_WITH_MALI_SUPPORT),)
ifndef TARGET_MALI_DRIVER_DIR
$(error TARGET_MALI_DRIVER_DIR must be defined if TARGET_GATOR_WITH_MALI_SUPPORT is.)
endif
GATOR_EXTRA_CFLAGS += -DMALI_SUPPORT=$(TARGET_GATOR_WITH_MALI_SUPPORT) -I$(KERNEL_PATH)/$(TARGET_MALI_DRIVER_DIR)
GATOR_EXTRA_MAKE_ARGS += GATOR_WITH_MALI_SUPPORT=$(TARGET_GATOR_WITH_MALI_SUPPORT)
endif
ifneq ($(realpath $(TOP)/external/gator/driver),)
gator_driver: android_kernel_modules $(INSTALLED_KERNEL_TARGET) $(ACP)
export PATH=$(KERNEL_COMPILER_PATHS):$(PATH) &&\
cd $(TOP)/external/gator/driver &&\
if [ -e $(KERNEL_TOOLS_PREFIX)ld.bfd ]; then LD=$(KERNEL_TOOLS_PREFIX)ld.bfd; else LD=$(KERNEL_TOOLS_PREFIX)ld; fi && \
$(MAKE) O=$(KERNEL_OUT) ARCH=$(ARCH) CROSS_COMPILE=$(KERNEL_TOOLS_PREFIX) LD=$$LD EXTRA_CFLAGS="$(EXTRA_CFLAGS) -fno-pic $(GATOR_EXTRA_CFLAGS)" KCFLAGS="$(TARGET_EXTRA_CFLAGS) -fno-pic $(LOCAL_CFLAGS)" $(GATOR_EXTRA_MAKE_ARGS) -C $(KERNEL_PATH) M=`pwd` modules
mkdir -p $(TARGET_OUT)/modules
find $(TOP)/external/gator/driver/. -name "*.ko" -exec $(ACP) -fpt {} $(TARGET_OUT)/modules/ \;
else
gator_driver:
endif
else
gator_driver:
endif
out_of_tree_modules: $(INSTALLED_KERNEL_TARGET) gator_driver
$(INSTALLED_KERNEL_TARGET): android_kernel
ln -sf $(KERNEL_OUT)/arch/$(ARCH)/boot/$(KERNEL_TARGET) $(INSTALLED_KERNEL_TARGET)
$(INSTALLED_SYSTEMTARBALL_TARGET): android_kernel_modules out_of_tree_modules
droidcore: android_kernel_modules out_of_tree_modules
#
# Generate a rule to build a device-tree.
#
# Usage: $(eval $(call MAKE_DEVICE_TREE, target-blob, source-name))
#
# target-blob Path and name for generated device tree blob
# source-name Name of source in arch/arm/boot/dts/ without trailing '.dts'
#
#
define MAKE_DEVICE_TREE
$(1): $$(KERNEL_OUT)/arch/arm/boot/$(2).dtb $$(ACP)
@mkdir -p $$(dir $$@)
$$(ACP) -fpt $$< $$@
DTB_TARGETS += $(2).dtb
DTB_INSTALL_TARGETS += $(1)
endef
#
# DEVICE_TREES contains a list of device-trees to build, each
# entry in the list is in the form <source-name>:<blob-name>
#
DTB_TARGETS :=
DTB_INSTALL_TARGETS :=
$(foreach _ub,$(DEVICE_TREES), \
$(eval _source := $(call word-colon,1,$(_ub))) \
$(eval _blob := $(call word-colon,2,$(_ub))) \
$(eval _target := $(PRODUCT_OUT)/boot/$(_blob)) \
$(eval $(call MAKE_DEVICE_TREE,$(_target),$(_source))) \
)
ifneq ($(strip $(DTB_TARGETS)),)
.PHONY : all_dtbs
all_dtbs : $(INSTALLED_KERNEL_TARGET)
export PATH=$(KERNEL_COMPILER_PATHS):$(PATH) &&\
cd $(KERNEL_SRC) && \
$(MAKE) O=$(KERNEL_OUT) ARCH=$(ARCH) CROSS_COMPILE=$(KERNEL_TOOLS_PREFIX) $(DTB_TARGETS)
-mv -f $(KERNEL_OUT)/arch/arm/boot/dts/*.dtb $(KERNEL_OUT)/arch/arm/boot/
$(patsubst %,$(KERNEL_OUT)/arch/arm/boot/%,$(DTB_TARGETS)) : all_dtbs
endif
$(INSTALLED_BOOTTARBALL_TARGET): $(DTB_INSTALL_TARGETS)
ifeq ($(TARGET_PRODUCT), vexpress_rtsm)
bootwrapper: $(DTB_INSTALL_TARGETS)
endif
|
