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Commit b4be6197 authored by /e/ robot's avatar /e/ robot
Browse files

Merge remote-tracking branch 'origin/lineage-22.2' into a15

parents 9b9fdc40 1b1687b4

build/tasks/kernel.mk

+56 −10
Original line number Diff line number Diff line
@@ -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

#
@@ -41,6 +45,9 @@ 
#                                          For example, for ARM devices,

#                                          use zImage-dtb instead of zImage.

#

#   BOARD_KERNEL_APPEND_DTBS           = List of DTBs to be appended to the kernel image,

#                                          wildcard is allowed for filename.

#

#   BOARD_DTB_CFG                      = Path to a mkdtboimg config file for dtb.img

#

#   BOARD_DTBO_CFG                     = Path to a mkdtboimg config file
@@ -59,6 +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
@@ -78,8 +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
@@ -109,12 +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_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 := $(word 1, $(KERNEL_DEFCONFIG))

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 ($(TARGET_PREBUILT_KERNEL),)
@@ -165,7 +181,7 @@ ifeq "$(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   *)
@@ -295,9 +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 \
@@ -482,7 +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))"
@@ -564,7 +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)
@@ -574,11 +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),)
@@ -677,7 +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))"
@@ -688,14 +711,37 @@ endif 


## Install it



ifeq ($(or $(FULL_RECOVERY_KERNEL_BUILD), $(FULL_KERNEL_BUILD)),true)



# Append DTBs to kernel image

# $(1): output directory path (The value passed to O=)

# $(2): output kernel image path

define append-dtbs-to-kernel-image

	$(hide) if grep -q '^CONFIG_OF=y' $(1)/.config; then \

			$(if $(BOARD_KERNEL_APPEND_DTBS),\

				echo "Appending DTBs to kernel image";\

				$(foreach dtb,$(BOARD_KERNEL_APPEND_DTBS),\

					cat `find $(1)/arch/$(KERNEL_ARCH)/boot/dts/$(dir $(dtb)) -maxdepth 1 -type f -name "$(notdir $(dtb))"` >> $(2);\

				)\

			)\

			true;\

		fi

endef



endif # FULL_RECOVERY_KERNEL_BUILD or FULL_KERNEL_BUILD



ifeq ($(NEEDS_KERNEL_COPY),true)

$(INSTALLED_KERNEL_TARGET): $(KERNEL_BIN)

	$(transform-prebuilt-to-target)

	$(if $(filter true,$(FULL_KERNEL_BUILD)),\

		$(call append-dtbs-to-kernel-image,$(KERNEL_OUT),$@))

endif



ifeq ($(RECOVERY_KERNEL_COPY),true)

$(INSTALLED_RECOVERY_KERNEL_TARGET): $(RECOVERY_BIN)

	$(transform-prebuilt-to-target)

	$(if $(filter true,$(FULL_RECOVERY_KERNEL_BUILD)),\

		$(call append-dtbs-to-kernel-image,$(RECOVERY_KERNEL_OUT),$@))

endif



.PHONY: recovery-kernel