kernel: Add support for external kernel configs
For targets that uses mainline kernel, the kernel tree usually only
contains configs on top of the upstream repository.
In such case, if we put the configs in elsewhere, we can simply just
track the upstream kernel repo, without needing to import configs.
Example usage:
TARGET_KERNEL_CONFIG_EXT := \
$(COMMON_PATH)/kconfig/platform_defconfig \
$(COMMON_PATH)/kconfig/common-addons.config
TARGET_KERNEL_CONFIG_EXT += \
$(DEVICE_PATH)/kconfig/device.config
Change-Id: I021ffb76d0c0612343cff7b5c81541c2b88ef7e6
This commit is contained in:
Yumi Yukimura
committed by
Jan Altensen
Jan Altensen
parent
f171568f8b
commit
1b1687b456
@@ -26,6 +26,10 @@
|
||||
# while all the others are fragments that will be merged
|
||||
# to main one in .config.
|
||||
# TARGET_KERNEL_RECOVERY_CONFIG = Same as above, but applicable to recovery kernel instead.
|
||||
# TARGET_KERNEL_CONFIG_EXT = List of path to external kernel defconfigs.
|
||||
# Same as TARGET_KERNEL_CONFIG, but paths are specified
|
||||
# instead of filenames.
|
||||
# TARGET_KERNEL_RECOVERY_CONFIG_EXT = Same as above, but applicable to recovery kernel instead.
|
||||
# TARGET_KERNEL_VARIANT_CONFIG = Variant defconfig, optional
|
||||
# TARGET_KERNEL_SELINUX_CONFIG = SELinux defconfig, optional
|
||||
#
|
||||
@@ -62,6 +66,11 @@
|
||||
#
|
||||
# KERNEL_LTO = Optional, force LTO to none / thin / full
|
||||
#
|
||||
# MERGE_ALL_KERNEL_CONFIGS_AT_ONCE = Optional, whether or not to merge all kernel config
|
||||
# fragments in one merge_configs.sh call. if true,
|
||||
# kernel config fragments will get merged faster, but
|
||||
# may cause some differences.
|
||||
#
|
||||
# NEED_KERNEL_MODULE_ROOT = Optional, if true, install kernel
|
||||
# modules in root instead of vendor
|
||||
# NEED_KERNEL_MODULE_SYSTEM = Optional, if true, install kernel
|
||||
@@ -81,8 +90,11 @@ ifneq ($(TARGET_NO_KERNEL_OVERRIDE),true)
|
||||
## Externally influenced variables
|
||||
KERNEL_SRC := $(TARGET_KERNEL_SOURCE)
|
||||
# kernel configuration - mandatory
|
||||
MERGE_ALL_KERNEL_CONFIGS_AT_ONCE ?= false
|
||||
KERNEL_DEFCONFIG := $(TARGET_KERNEL_CONFIG)
|
||||
KERNEL_DEFCONFIG_EXT := $(TARGET_KERNEL_CONFIG_EXT)
|
||||
RECOVERY_DEFCONFIG := $(TARGET_KERNEL_RECOVERY_CONFIG)
|
||||
RECOVERY_DEFCONFIG_EXT := $(TARGET_KERNEL_RECOVERY_CONFIG_EXT)
|
||||
VARIANT_DEFCONFIG := $(TARGET_KERNEL_VARIANT_CONFIG)
|
||||
SELINUX_DEFCONFIG := $(TARGET_KERNEL_SELINUX_CONFIG)
|
||||
# dtb generation - optional
|
||||
@@ -112,12 +124,13 @@ else
|
||||
KERNEL_DEFCONFIG_ARCH := $(KERNEL_ARCH)
|
||||
endif
|
||||
KERNEL_DEFCONFIG_DIR := $(KERNEL_SRC)/arch/$(KERNEL_DEFCONFIG_ARCH)/configs
|
||||
ALL_KERNEL_DEFCONFIG_SRCS := $(foreach config,$(KERNEL_DEFCONFIG),$(KERNEL_DEFCONFIG_DIR)/$(config))
|
||||
ALL_RECOVERY_KERNEL_DEFCONFIG_SRCS := $(foreach config,$(RECOVERY_DEFCONFIG),$(KERNEL_DEFCONFIG_DIR)/$(config))
|
||||
|
||||
BASE_KERNEL_DEFCONFIG := $(word 1, $(KERNEL_DEFCONFIG))
|
||||
ALL_KERNEL_DEFCONFIG_SRCS := $(foreach config,$(KERNEL_DEFCONFIG),$(KERNEL_DEFCONFIG_DIR)/$(config))
|
||||
ALL_KERNEL_DEFCONFIG_SRCS += $(KERNEL_DEFCONFIG_EXT)
|
||||
ALL_RECOVERY_KERNEL_DEFCONFIG_SRCS := $(foreach config,$(RECOVERY_DEFCONFIG),$(KERNEL_DEFCONFIG_DIR)/$(config))
|
||||
ALL_RECOVERY_KERNEL_DEFCONFIG_SRCS += $(RECOVERY_DEFCONFIG_EXT)
|
||||
|
||||
BASE_KERNEL_DEFCONFIG_SRC := $(word 1, $(ALL_KERNEL_DEFCONFIG_SRCS))
|
||||
BASE_RECOVERY_KERNEL_DEFCONFIG := $(word 1, $(RECOVERY_DEFCONFIG))
|
||||
BASE_RECOVERY_KERNEL_DEFCONFIG_SRC := $(word 1, $(ALL_RECOVERY_KERNEL_DEFCONFIG_SRCS))
|
||||
|
||||
ifeq ($(TARGET_PREBUILT_KERNEL),)
|
||||
@@ -168,7 +181,7 @@ ifeq "$(wildcard $(KERNEL_SRC) )" ""
|
||||
endif
|
||||
else
|
||||
NEEDS_KERNEL_COPY := true
|
||||
ifeq ($(TARGET_KERNEL_CONFIG),)
|
||||
ifeq ($(TARGET_KERNEL_CONFIG)$(TARGET_KERNEL_CONFIG_EXT),)
|
||||
$(warning **********************************************************)
|
||||
$(warning * Kernel source found, but no configuration was defined *)
|
||||
$(warning * Please add the TARGET_KERNEL_CONFIG variable to your *)
|
||||
@@ -298,9 +311,16 @@ endef
|
||||
|
||||
# Generate kernel .config from a given defconfig
|
||||
# $(1): Output path (The value passed to O=)
|
||||
# $(2): The defconfig to process (just the filename, no need for full path to file)
|
||||
# $(2): The defconfig to process (full path to file)
|
||||
define make-kernel-config
|
||||
$(call internal-make-kernel-target,$(1),VARIANT_DEFCONFIG=$(VARIANT_DEFCONFIG) SELINUX_DEFCONFIG=$(SELINUX_DEFCONFIG) $(2))
|
||||
cp $(word 1,$(2)) $(1)/.config
|
||||
$(call internal-make-kernel-target,$(1),olddefconfig)
|
||||
$(if $(filter true,$(MERGE_ALL_KERNEL_CONFIGS_AT_ONCE)),\
|
||||
$(KERNEL_SRC)/scripts/kconfig/merge_config.sh -m -O $(1) $(1)/.config $(filter %.config,$(2)),
|
||||
$(foreach config,$(filter %.config,$(2)),
|
||||
$(KERNEL_SRC)/scripts/kconfig/merge_config.sh -m -O $(1) $(1)/.config $(config); \
|
||||
$(call internal-make-kernel-target,$(1),olddefconfig);))
|
||||
$(call internal-make-kernel-target,$(1),VARIANT_DEFCONFIG=$(VARIANT_DEFCONFIG) SELINUX_DEFCONFIG=$(SELINUX_DEFCONFIG) olddefconfig)
|
||||
$(hide) if [ "$(KERNEL_LTO)" = "none" ]; then \
|
||||
$(KERNEL_SRC)/scripts/config --file $(1)/.config \
|
||||
-d LTO_CLANG \
|
||||
@@ -485,7 +505,7 @@ $(KERNEL_OUT):
|
||||
|
||||
$(KERNEL_CONFIG): $(KERNEL_OUT) $(ALL_KERNEL_DEFCONFIG_SRCS)
|
||||
@echo "Building Kernel Config"
|
||||
$(call make-kernel-config,$(KERNEL_OUT),$(KERNEL_DEFCONFIG))
|
||||
$(call make-kernel-config,$(KERNEL_OUT),$(ALL_KERNEL_DEFCONFIG_SRCS))
|
||||
|
||||
$(TARGET_PREBUILT_INT_KERNEL): $(KERNEL_CONFIG) $(DEPMOD) $(DTC) $(KERNEL_MODULES_PARTITION_FILE_LIST) $(SYSTEM_KERNEL_MODULES_PARTITION_FILE_LIST)
|
||||
@echo "Building Kernel Image ($(BOARD_KERNEL_IMAGE_NAME))"
|
||||
@@ -567,7 +587,7 @@ kerneltags: $(KERNEL_CONFIG)
|
||||
.PHONY: kernelsavedefconfig alldefconfig kernelconfig recoverykernelconfig
|
||||
|
||||
kernelsavedefconfig: $(KERNEL_OUT)
|
||||
$(call make-kernel-config,$(KERNEL_OUT),$(BASE_KERNEL_DEFCONFIG))
|
||||
$(call make-kernel-config,$(KERNEL_OUT),$(BASE_KERNEL_DEFCONFIG_SRC))
|
||||
$(call make-kernel-target,savedefconfig)
|
||||
cp $(KERNEL_OUT)/defconfig $(BASE_KERNEL_DEFCONFIG_SRC)
|
||||
|
||||
@@ -577,11 +597,11 @@ alldefconfig: $(KERNEL_OUT)
|
||||
|
||||
kernelconfig: $(KERNEL_OUT) $(ALL_KERNEL_DEFCONFIG_SRCS)
|
||||
@echo "Building Kernel Config"
|
||||
$(call make-kernel-config,$(KERNEL_OUT),$(KERNEL_DEFCONFIG))
|
||||
$(call make-kernel-config,$(KERNEL_OUT),$(ALL_KERNEL_DEFCONFIG_SRCS))
|
||||
|
||||
recoverykernelconfig: $(KERNEL_OUT) $(ALL_RECOVERY_KERNEL_DEFCONFIG_SRCS)
|
||||
@echo "Building Recovery Kernel Config"
|
||||
$(call make-kernel-config,$(RECOVERY_KERNEL_OUT),$(RECOVERY_DEFCONFIG))
|
||||
$(call make-kernel-config,$(RECOVERY_KERNEL_OUT),$(ALL_RECOVERY_KERNEL_DEFCONFIG_SRCS))
|
||||
|
||||
ifeq (true,$(filter true, $(TARGET_NEEDS_DTBOIMAGE) $(BOARD_KERNEL_SEPARATED_DTBO)))
|
||||
ifneq ($(BOARD_CUSTOM_DTBOIMG_MK),)
|
||||
@@ -680,7 +700,7 @@ $(RECOVERY_KERNEL_OUT):
|
||||
|
||||
$(RECOVERY_KERNEL_CONFIG): $(ALL_RECOVERY_KERNEL_DEFCONFIG_SRCS)
|
||||
@echo "Building Recovery Kernel Config"
|
||||
$(call make-kernel-config,$(RECOVERY_KERNEL_OUT),$(RECOVERY_DEFCONFIG))
|
||||
$(call make-kernel-config,$(RECOVERY_KERNEL_OUT),$(ALL_RECOVERY_KERNEL_DEFCONFIG_SRCS))
|
||||
|
||||
$(TARGET_PREBUILT_INT_RECOVERY_KERNEL): $(RECOVERY_KERNEL_CONFIG) $(DEPMOD) $(DTC)
|
||||
@echo "Building Recovery Kernel Image ($(BOARD_KERNEL_IMAGE_NAME))"
|
||||
|
||||
Reference in New Issue
Block a user