Merge "Make build support vendor_kernel_boot image" am: 8842016b30

Original change: https://android-review.googlesource.com/c/platform/build/+/2018599

Change-Id: I7789e6570061b8808e661a1748dc7c8385820289

core/Makefile

@@ -518,6 +518,12 @@ else
   VENDOR_RAMDISK_STRIPPED_MODULE_STAGING_DIR :=
 endif
 
+ifneq ($(BOARD_DO_NOT_STRIP_VENDOR_KERNEL_RAMDISK_MODULES),true)
+  VENDOR_KERNEL_RAMDISK_STRIPPED_MODULE_STAGING_DIR := $(call intermediates-dir-for,PACKAGING,depmod_vendor_kernel_ramdisk_stripped)
+else
+  VENDOR_KERNEL_RAMDISK_STRIPPED_MODULE_STAGING_DIR :=
+endif
+
 BOARD_KERNEL_MODULE_DIRS += top
 $(foreach kmd,$(BOARD_KERNEL_MODULE_DIRS), \
   $(eval ALL_DEFAULT_INSTALLED_MODULES += $(call build-image-kernel-modules-dir,RECOVERY,$(TARGET_RECOVERY_ROOT_OUT),,modules.load.recovery,$(RECOVERY_STRIPPED_MODULE_STAGING_DIR),$(kmd))) \
@@ -529,6 +535,7 @@ $(foreach kmd,$(BOARD_KERNEL_MODULE_DIRS), \
     $(eval output_dir := $(TARGET_VENDOR_RAMDISK_OUT)) \
     $(eval result_var := ALL_DEFAULT_INSTALLED_MODULES)) \
   $(eval $(result_var) += $(call build-image-kernel-modules-dir,VENDOR_RAMDISK,$(output_dir),,modules.load,$(VENDOR_RAMDISK_STRIPPED_MODULE_STAGING_DIR),$(kmd))) \
+  $(eval ALL_DEFAULT_INSTALLED_MODULES += $(call build-image-kernel-modules-dir,VENDOR_KERNEL_RAMDISK,$(TARGET_VENDOR_KERNEL_RAMDISK_OUT),,modules.load,$(VENDOR_KERNEL_RAMDISK_STRIPPED_MODULE_STAGING_DIR),$(kmd))) \
   $(eval ALL_DEFAULT_INSTALLED_MODULES += $(call build-vendor-ramdisk-recovery-load,$(kmd))) \
   $(eval ALL_DEFAULT_INSTALLED_MODULES += $(call build-image-kernel-modules-dir,VENDOR,$(if $(filter true,$(BOARD_USES_VENDOR_DLKMIMAGE)),$(TARGET_OUT_VENDOR_DLKM),$(TARGET_OUT_VENDOR)),vendor,modules.load,$(VENDOR_STRIPPED_MODULE_STAGING_DIR),$(kmd))) \
   $(eval ALL_DEFAULT_INSTALLED_MODULES += $(call build-vendor-charger-load,$(kmd))) \
@@ -1288,7 +1295,11 @@ $(INSTALLED_FILES_FILE_VENDOR_RAMDISK): $(INTERNAL_VENDOR_RAMDISK_FILES) $(FILES
 $(eval $(call declare-0p-target,$(INSTALLED_FILES_FILE_VENDOR_RAMDISK)))
 
 ifdef BOARD_INCLUDE_DTB_IN_BOOTIMG
-  INTERNAL_VENDOR_BOOTIMAGE_ARGS += --dtb $(INSTALLED_DTBIMAGE_TARGET)
+  ifneq ($(BUILDING_VENDOR_KERNEL_BOOT_IMAGE),true)
+    # If we have vendor_kernel_boot partition, we migrate dtb image to that image
+    # and allow dtb in vendor_boot to be empty.
+    INTERNAL_VENDOR_BOOTIMAGE_ARGS += --dtb $(INSTALLED_DTBIMAGE_TARGET)
+  endif
 endif
 ifdef BOARD_KERNEL_BASE
   INTERNAL_VENDOR_BOOTIMAGE_ARGS += --base $(BOARD_KERNEL_BASE)
@@ -1374,6 +1385,66 @@ $(call declare-container-license-deps,$(INSTALLED_VENDOR_BOOTIMAGE_TARGET),$(INT
 VENDOR_NOTICE_DEPS += $(INSTALLED_VENDOR_BOOTIMAGE_TARGET)
 endif # BUILDING_VENDOR_BOOT_IMAGE
 
+# -----------------------------------------------------------------
+# vendor kernel boot image
+ifeq ($(BUILDING_VENDOR_KERNEL_BOOT_IMAGE),true)
+
+INTERNAL_VENDOR_KERNEL_RAMDISK_FILES := $(filter $(TARGET_VENDOR_KERNEL_RAMDISK_OUT)/%, \
+    $(ALL_GENERATED_SOURCES) \
+    $(ALL_DEFAULT_INSTALLED_MODULES))
+
+INTERNAL_VENDOR_KERNEL_RAMDISK_TARGET := $(call intermediates-dir-for,PACKAGING,vendor_kernel_boot)/vendor_kernel_ramdisk.cpio$(RAMDISK_EXT)
+
+$(INTERNAL_VENDOR_KERNEL_RAMDISK_TARGET): $(MKBOOTFS) $(INTERNAL_VENDOR_KERNEL_RAMDISK_FILES) | $(COMPRESSION_COMMAND_DEPS)
+	$(MKBOOTFS) -d $(TARGET_OUT) $(TARGET_VENDOR_KERNEL_RAMDISK_OUT) | $(COMPRESSION_COMMAND) > $@
+
+INSTALLED_VENDOR_KERNEL_RAMDISK_TARGET := $(PRODUCT_OUT)/vendor_kernel_ramdisk.img
+$(INSTALLED_VENDOR_KERNEL_RAMDISK_TARGET): $(INTERNAL_VENDOR_KERNEL_RAMDISK_TARGET)
+	@echo "Target vendor kernel ramdisk: $@"
+	$(copy-file-to-target)
+
+INSTALLED_FILES_FILE_VENDOR_KERNEL_RAMDISK := $(PRODUCT_OUT)/installed-files-vendor-kernel-ramdisk.txt
+INSTALLED_FILES_JSON_VENDOR_KERNEL_RAMDISK := $(INSTALLED_FILES_FILE_VENDOR_KERNEL_RAMDISK:.txt=.json)
+$(INSTALLED_FILES_FILE_VENDOR_KERNEL_RAMDISK): .KATI_IMPLICIT_OUTPUTS := $(INSTALLED_FILES_JSON_VENDOR_KERNEL_RAMDISK)
+$(INSTALLED_FILES_FILE_VENDOR_KERNEL_RAMDISK): $(INTERNAL_VENDOR_KERNEL_RAMDISK_TARGET)
+$(INSTALLED_FILES_FILE_VENDOR_KERNEL_RAMDISK): $(INTERNAL_VENDOR_KERNEL_RAMDISK_FILES) $(FILESLIST) $(FILESLIST_UTIL)
+	@echo Installed file list: $@
+	mkdir -p $(dir $@)
+	rm -f $@
+	$(FILESLIST) $(TARGET_VENDOR_KERNEL_RAMDISK_OUT) > $(@:.txt=.json)
+	$(FILESLIST_UTIL) -c $(@:.txt=.json) > $@
+
+INTERNAL_VENDOR_KERNEL_BOOTIMAGE_ARGS := --vendor_ramdisk $(INTERNAL_VENDOR_KERNEL_RAMDISK_TARGET)
+INSTALLED_VENDOR_KERNEL_BOOTIMAGE_TARGET := $(PRODUCT_OUT)/vendor_kernel_boot.img
+$(INSTALLED_VENDOR_KERNEL_BOOTIMAGE_TARGET): $(MKBOOTIMG) $(INTERNAL_VENDOR_KERNEL_RAMDISK_TARGET)
+
+ifdef BOARD_INCLUDE_DTB_IN_BOOTIMG
+  INTERNAL_VENDOR_KERNEL_BOOTIMAGE_ARGS += --dtb $(INSTALLED_DTBIMAGE_TARGET)
+  $(INSTALLED_VENDOR_KERNEL_BOOTIMAGE_TARGET): $(INSTALLED_DTBIMAGE_TARGET)
+endif
+ifdef BOARD_KERNEL_PAGESIZE
+  INTERNAL_VENDOR_KERNEL_BOOTIMAGE_ARGS += --pagesize $(BOARD_KERNEL_PAGESIZE)
+endif
+
+
+ifeq ($(BOARD_AVB_ENABLE),true)
+$(INSTALLED_VENDOR_KERNEL_BOOTIMAGE_TARGET): $(AVBTOOL) $(BOARD_AVB_VENDOR_KERNEL_BOOTIMAGE_KEY_PATH)
+	$(call pretty,"Target vendor_kernel_boot image: $@")
+	$(MKBOOTIMG) $(INTERNAL_VENDOR_KERNEL_BOOTIMAGE_ARGS) $(BOARD_MKBOOTIMG_ARGS) --vendor_boot $@
+	$(call assert-max-image-size,$@,$(BOARD_VENDOR_KERNEL_BOOTIMAGE_PARTITION_SIZE))
+	$(AVBTOOL) add_hash_footer \
+	    --image $@ \
+	   $(call get-partition-size-argument,$(BOARD_VENDOR_KERNEL_BOOTIMAGE_PARTITION_SIZE)) \
+	   --partition_name vendor_kernel_boot $(INTERNAL_AVB_VENDOR_KERNEL_BOOT_SIGNING_ARGS) \
+	   $(BOARD_AVB_VENDOR_KERNEL_BOOT_ADD_HASH_FOOTER_ARGS)
+else
+$(INSTALLED_VENDOR_KERNEL_BOOTIMAGE_TARGET):
+	$(call pretty,"Target vendor_kernel_boot image: $@")
+	$(MKBOOTIMG) $(INTERNAL_VENDOR_KERNEL_BOOTIMAGE_ARGS) $(BOARD_MKBOOTIMG_ARGS) --vendor_boot $@
+	$(call assert-max-image-size,$@,$(BOARD_VENDOR_KERNEL_BOOTIMAGE_PARTITION_SIZE))
+endif
+endif # BUILDING_VENDOR_KERNEL_BOOT_IMAGE
+
 # -----------------------------------------------------------------
 # NOTICE files
 #
@@ -3969,6 +4040,9 @@ BOARD_AVB_INIT_BOOT_ADD_HASH_FOOTER_ARGS += \
 BOARD_AVB_VENDOR_BOOT_ADD_HASH_FOOTER_ARGS += \
     --prop com.android.build.vendor_boot.fingerprint:$(BUILD_FINGERPRINT_FROM_FILE) \
 
+BOARD_AVB_VENDOR_KERNEL_BOOT_ADD_HASH_FOOTER_ARGS += \
+    --prop com.android.build.vendor_kernel_boot.fingerprint:$(BUILD_FINGERPRINT_FROM_FILE) \
+
 BOARD_AVB_RECOVERY_ADD_HASH_FOOTER_ARGS += \
     --prop com.android.build.recovery.fingerprint:$(BUILD_FINGERPRINT_FROM_FILE)
 
@@ -4055,6 +4129,7 @@ endif
 BOOT_FOOTER_ARGS := BOARD_AVB_BOOT_ADD_HASH_FOOTER_ARGS
 INIT_BOOT_FOOTER_ARGS := BOARD_AVB_INIT_BOOT_ADD_HASH_FOOTER_ARGS
 VENDOR_BOOT_FOOTER_ARGS := BOARD_AVB_VENDOR_BOOT_ADD_HASH_FOOTER_ARGS
+VENDOR_KERNEL_BOOT_FOOTER_ARGS := BOARD_AVB_VENDOR_KERNEL_BOOT_ADD_HASH_FOOTER_ARGS
 DTBO_FOOTER_ARGS := BOARD_AVB_DTBO_ADD_HASH_FOOTER_ARGS
 PVMFW_FOOTER_ARGS := BOARD_AVB_PVMFW_ADD_HASH_FOOTER_ARGS
 SYSTEM_FOOTER_ARGS := BOARD_AVB_SYSTEM_ADD_HASHTREE_FOOTER_ARGS
@@ -4146,6 +4221,10 @@ ifdef INSTALLED_VENDOR_BOOTIMAGE_TARGET
 $(eval $(call check-and-set-avb-args,vendor_boot))
 endif
 
+ifdef INSTALLED_VENDOR_KERNEL_BOOTIMAGE_TARGET
+$(eval $(call check-and-set-avb-args,vendor_kernel_boot))
+endif
+
 ifdef INSTALLED_SYSTEMIMAGE_TARGET
 $(eval $(call check-and-set-avb-args,system))
 endif
@@ -4250,6 +4329,9 @@ define extract-avb-chain-public-keys
   $(if $(BOARD_AVB_VENDOR_BOOT_KEY_PATH),\
     $(AVBTOOL) extract_public_key --key $(BOARD_AVB_VENDOR_BOOT_KEY_PATH) \
       --output $(1)/vendor_boot.avbpubkey)
+  $(if $(BOARD_AVB_VENDOR_KERNEL_BOOT_KEY_PATH),\
+    $(AVBTOOL) extract_public_key --key $(BOARD_AVB_VENDOR_KERNEL_BOOT_KEY_PATH) \
+      --output $(1)/vendor_kernel_boot.avbpubkey)
   $(if $(BOARD_AVB_SYSTEM_KEY_PATH),\
     $(hide) $(AVBTOOL) extract_public_key --key $(BOARD_AVB_SYSTEM_KEY_PATH) \
       --output $(1)/system.avbpubkey)
@@ -4363,6 +4445,7 @@ $(INSTALLED_VBMETAIMAGE_TARGET): \
 	    $(INSTALLED_BOOTIMAGE_TARGET) \
 	    $(INSTALLED_INIT_BOOT_IMAGE_TARGET) \
 	    $(INSTALLED_VENDOR_BOOTIMAGE_TARGET) \
+	    $(INSTALLED_VENDOR_KERNEL_BOOTIMAGE_TARGET) \
 	    $(INSTALLED_SYSTEMIMAGE_TARGET) \
 	    $(INSTALLED_VENDORIMAGE_TARGET) \
 	    $(INSTALLED_PRODUCTIMAGE_TARGET) \
@@ -4951,6 +5034,10 @@ ifneq ($(INSTALLED_VENDOR_BOOTIMAGE_TARGET),)
 	echo "vendor_boot=true" >> $@
 	echo "vendor_boot_size=$(BOARD_VENDOR_BOOTIMAGE_PARTITION_SIZE)" >> $@
 endif
+ifneq ($(INSTALLED_VENDOR_KERNEL_BOOTIMAGE_TARGET),)
+	echo "vendor_kernel_boot=true" >> $@
+	echo "vendor_kernel_boot_size=$(BOARD_VENDOR_KERNEL_BOOTIMAGE_PARTITION_SIZE)" >> $@
+endif
 ifeq ($(INSTALLED_RECOVERYIMAGE_TARGET),)
 	$(hide) echo "no_recovery=true" >> $@
 endif
@@ -5031,6 +5118,12 @@ ifdef BOARD_AVB_VENDOR_BOOT_KEY_PATH
 	echo "avb_vendor_boot_algorithm=$(BOARD_AVB_VENDOR_BOOT_ALGORITHM)" >> $@
 	echo "avb_vendor_boot_rollback_index_location=$(BOARD_AVB_VENDOR_BOOT_ROLLBACK_INDEX_LOCATION)" >> $@
 endif # BOARD_AVB_VENDOR_BOOT_KEY_PATH
+	echo "avb_vendor_kernel_boot_add_hash_footer_args=$(BOARD_AVB_VENDOR_KERNEL_BOOT_ADD_HASH_FOOTER_ARGS)" >> $@
+ifdef BOARD_AVB_VENDOR_KERNEL_BOOT_KEY_PATH
+	echo "avb_vendor_kernel_boot_key_path=$(BOARD_AVB_VENDOR_KERNEL_BOOT_KEY_PATH)" >> $@
+	echo "avb_vendor_kernel_boot_algorithm=$(BOARD_AVB_VENDOR_KERNEL_BOOT_ALGORITHM)" >> $@
+	echo "avb_vendor_kernel_boot_rollback_index_location=$(BOARD_AVB_VENDOR_KERNEL_BOOT_ROLLBACK_INDEX_LOCATION)" >> $@
+endif # BOARD_AVB_VENDOR_KERNEL_BOOT_KEY_PATH
 	$(hide) echo "avb_recovery_add_hash_footer_args=$(BOARD_AVB_RECOVERY_ADD_HASH_FOOTER_ARGS)" >> $@
 ifdef BOARD_AVB_RECOVERY_KEY_PATH
 	$(hide) echo "avb_recovery_key_path=$(BOARD_AVB_RECOVERY_KEY_PATH)" >> $@
@@ -5548,8 +5641,10 @@ ifdef INSTALLED_VENDOR_BOOTIMAGE_TARGET
 	$(call package_files-copy-root, \
 	    $(TARGET_VENDOR_RAMDISK_OUT),$(zip_root)/VENDOR_BOOT/RAMDISK)
 ifdef INSTALLED_DTBIMAGE_TARGET
+ifneq ($(BUILDING_VENDOR_KERNEL_BOOT_IMAGE),true)
 	cp $(INSTALLED_DTBIMAGE_TARGET) $(zip_root)/VENDOR_BOOT/dtb
 endif
+endif # end of INSTALLED_DTBIMAGE_TARGET
 ifdef INTERNAL_VENDOR_BOOTCONFIG_TARGET
 	cp $(INTERNAL_VENDOR_BOOTCONFIG_TARGET) $(zip_root)/VENDOR_BOOT/vendor_bootconfig
 endif
@@ -5574,6 +5669,17 @@ ifdef INTERNAL_VENDOR_RAMDISK_FRAGMENTS
 	  ))
 endif # INTERNAL_VENDOR_RAMDISK_FRAGMENTS != ""
 endif # INSTALLED_VENDOR_BOOTIMAGE_TARGET
+ifdef INSTALLED_VENDOR_KERNEL_BOOTIMAGE_TARGET
+	mkdir -p $(zip_root)/VENDOR_KERNEL_BOOT
+	$(call package_files-copy-root, \
+	    $(TARGET_VENDOR_KERNEL_RAMDISK_OUT),$(zip_root)/VENDOR_KERNEL_BOOT/RAMDISK)
+ifdef INSTALLED_DTBIMAGE_TARGET
+	cp $(INSTALLED_DTBIMAGE_TARGET) $(zip_root)/VENDOR_KERNEL_BOOT/dtb
+endif
+ifdef BOARD_KERNEL_PAGESIZE
+	echo "$(BOARD_KERNEL_PAGESIZE)" > $(zip_root)/VENDOR_KERNEL_BOOT/pagesize
+endif
+endif # INSTALLED_VENDOR_BOOTIMAGE_TARGET
 ifdef BUILDING_SYSTEM_IMAGE
 	@# Contents of the system image
 	$(hide) $(call package_files-copy-root, \

core/board_config.mk

@@ -161,11 +161,15 @@ _board_strip_list += BOARD_AVB_RECOVERY_ROLLBACK_INDEX_LOCATION
 _board_strip_list += BOARD_AVB_VENDOR_BOOT_KEY_PATH
 _board_strip_list += BOARD_AVB_VENDOR_BOOT_ALGORITHM
 _board_strip_list += BOARD_AVB_VENDOR_BOOT_ROLLBACK_INDEX_LOCATION
+_board_strip_list += BOARD_AVB_VENDOR_KERNEL_BOOT_KEY_PATH
+_board_strip_list += BOARD_AVB_VENDOR_KERNEL_BOOT_ALGORITHM
+_board_strip_list += BOARD_AVB_VENDOR_KERNEL_BOOT_ROLLBACK_INDEX_LOCATION
 _board_strip_list += BOARD_GKI_SIGNING_SIGNATURE_ARGS
 _board_strip_list += BOARD_GKI_SIGNING_ALGORITHM
 _board_strip_list += BOARD_GKI_SIGNING_KEY_PATH
 _board_strip_list += BOARD_MKBOOTIMG_ARGS
 _board_strip_list += BOARD_VENDOR_BOOTIMAGE_PARTITION_SIZE
+_board_strip_list += BOARD_VENDOR_KERNEL_BOOTIMAGE_PARTITION_SIZE
 _board_strip_list += ODM_MANIFEST_SKUS
 
 
@@ -520,6 +524,25 @@ ifdef BOARD_BOOT_HEADER_VERSION
 endif
 .KATI_READONLY := BUILDING_VENDOR_BOOT_IMAGE
 
+# Are we building a vendor kernel boot image
+BUILDING_VENDOR_KERNEL_BOOT_IMAGE :=
+ifeq ($(PRODUCT_BUILD_VENDOR_KERNEL_BOOT_IMAGE),true)
+  ifneq ($(BUILDING_VENDOR_BOOT_IMAGE),true)
+    $(error BUILDING_VENDOR_BOOT_IMAGE is required, but BUILDING_VENDOR_BOOT_IMAGE is not true)
+  endif
+  ifndef BOARD_VENDOR_KERNEL_BOOTIMAGE_PARTITION_SIZE
+    $(error BOARD_VENDOR_KERNEL_BOOTIMAGE_PARTITION_SIZE is required when PRODUCT_BUILD_VENDOR_KERNEL_BOOT_IMAGE is true)
+  endif
+  BUILDING_VENDOR_KERNEL_BOOT_IMAGE := true
+else ifeq ($(PRODUCT_BUILD_VENDOR_KERNEL),)
+  ifdef BOARD_VENDOR_KERNEL_BOOTIMAGE_PARTITION_SIZE
+    ifeq ($(BUILDING_VENDOR_BOOT_IMAGE),true)
+      BUILDING_VENDOR_KERNEL_BOOT_IMAGE := true
+    endif
+  endif
+endif # end of PRODUCT_BUILD_VENDOR_KERNEL_BOOT_IMAGE
+.KATI_READONLY := BUILDING_VENDOR_KERNEL_BOOT_IMAGE
+
 # Are we building a ramdisk image
 BUILDING_RAMDISK_IMAGE := true
 ifeq ($(PRODUCT_BUILD_RAMDISK_IMAGE),)

core/envsetup.mk

@@ -282,6 +282,7 @@ _odm_dlkm_path_placeholder := ||ODM_DLKM-PATH-PH||
 _system_dlkm_path_placeholder := ||SYSTEM_DLKM-PATH-PH||
 TARGET_COPY_OUT_VENDOR := $(_vendor_path_placeholder)
 TARGET_COPY_OUT_VENDOR_RAMDISK := vendor_ramdisk
+TARGET_COPY_OUT_VENDOR_KERNEL_RAMDISK := vendor_kernel_ramdisk
 TARGET_COPY_OUT_PRODUCT := $(_product_path_placeholder)
 # TODO(b/135957588) TARGET_COPY_OUT_PRODUCT_SERVICES will copy the target to
 # product
@@ -988,6 +989,7 @@ TARGET_SYSTEM_DLKM_OUT := $(PRODUCT_OUT)/$(TARGET_COPY_OUT_SYSTEM_DLKM)
 .KATI_READONLY := TARGET_SYSTEM_DLKM_OUT
 
 TARGET_VENDOR_RAMDISK_OUT := $(PRODUCT_OUT)/$(TARGET_COPY_OUT_VENDOR_RAMDISK)
+TARGET_VENDOR_KERNEL_RAMDISK_OUT := $(PRODUCT_OUT)/$(TARGET_COPY_OUT_VENDOR_KERNEL_RAMDISK)
 
 TARGET_ROOT_OUT := $(PRODUCT_OUT)/$(TARGET_COPY_OUT_ROOT)
 TARGET_ROOT_OUT_BIN := $(TARGET_ROOT_OUT)/bin

core/main.mk

@@ -1560,6 +1560,9 @@ vendorimage: $(INSTALLED_VENDORIMAGE_TARGET)
 .PHONY: vendorbootimage
 vendorbootimage: $(INSTALLED_VENDOR_BOOTIMAGE_TARGET)
 
+.PHONY: vendorkernelbootimage
+vendorkernelbootimage: $(INSTALLED_VENDOR_KERNEL_BOOTIMAGE_TARGET)
+
 .PHONY: vendorbootimage_debug
 vendorbootimage_debug: $(INSTALLED_VENDOR_DEBUG_BOOTIMAGE_TARGET)
 
@@ -1569,6 +1572,9 @@ vendorbootimage_test_harness: $(INSTALLED_VENDOR_TEST_HARNESS_BOOTIMAGE_TARGET)
 .PHONY: vendorramdisk
 vendorramdisk: $(INSTALLED_VENDOR_RAMDISK_TARGET)
 
+.PHONY: vendorkernelramdisk
+vendorkernelramdisk: $(INSTALLED_VENDOR_KERNEL_RAMDISK_TARGET)
+
 .PHONY: vendorramdisk_debug
 vendorramdisk_debug: $(INSTALLED_VENDOR_DEBUG_RAMDISK_TARGET)
 
@@ -1644,10 +1650,12 @@ droidcore-unbundled: $(filter $(HOST_OUT_ROOT)/%,$(modules_to_install)) \
     $(INSTALLED_BPTIMAGE_TARGET) \
     $(INSTALLED_VENDORIMAGE_TARGET) \
     $(INSTALLED_VENDOR_BOOTIMAGE_TARGET) \
+    $(INSTALLED_VENDOR_KERNEL_BOOTIMAGE_TARGET) \
     $(INSTALLED_VENDOR_DEBUG_BOOTIMAGE_TARGET) \
     $(INSTALLED_VENDOR_TEST_HARNESS_RAMDISK_TARGET) \
     $(INSTALLED_VENDOR_TEST_HARNESS_BOOTIMAGE_TARGET) \
     $(INSTALLED_VENDOR_RAMDISK_TARGET) \
+    $(INSTALLED_VENDOR_KERNEL_RAMDISK_TARGET) \
     $(INSTALLED_VENDOR_DEBUG_RAMDISK_TARGET) \
     $(INSTALLED_ODMIMAGE_TARGET) \
     $(INSTALLED_VENDOR_DLKMIMAGE_TARGET) \
@@ -1684,6 +1692,8 @@ droidcore-unbundled: $(filter $(HOST_OUT_ROOT)/%,$(modules_to_install)) \
     $(INSTALLED_FILES_JSON_VENDOR_RAMDISK) \
     $(INSTALLED_FILES_FILE_VENDOR_DEBUG_RAMDISK) \
     $(INSTALLED_FILES_JSON_VENDOR_DEBUG_RAMDISK) \
+    $(INSTALLED_FILES_FILE_VENDOR_KERNEL_RAMDISK) \
+    $(INSTALLED_FILES_JSON_VENDOR_KERNEL_RAMDISK) \
     $(INSTALLED_FILES_FILE_ROOT) \
     $(INSTALLED_FILES_JSON_ROOT) \
     $(INSTALLED_FILES_FILE_RECOVERY) \
@@ -1867,6 +1877,8 @@ else ifeq ($(TARGET_BUILD_UNBUNDLED),$(TARGET_BUILD_UNBUNDLED_IMAGE))
       $(INSTALLED_FILES_JSON_DEBUG_RAMDISK) \
       $(INSTALLED_FILES_FILE_VENDOR_RAMDISK) \
       $(INSTALLED_FILES_JSON_VENDOR_RAMDISK) \
+      $(INSTALLED_FILES_FILE_VENDOR_KERNEL_RAMDISK) \
+      $(INSTALLED_FILES_JSON_VENDOR_KERNEL_RAMDISK) \
       $(INSTALLED_FILES_FILE_VENDOR_DEBUG_RAMDISK) \
       $(INSTALLED_FILES_JSON_VENDOR_DEBUG_RAMDISK) \
       $(INSTALLED_DEBUG_RAMDISK_TARGET) \
@@ -1878,6 +1890,7 @@ else ifeq ($(TARGET_BUILD_UNBUNDLED),$(TARGET_BUILD_UNBUNDLED_IMAGE))
       $(INSTALLED_VENDOR_TEST_HARNESS_BOOTIMAGE_TARGET) \
       $(INSTALLED_VENDOR_RAMDISK_TARGET) \
       $(INSTALLED_VENDOR_DEBUG_RAMDISK_TARGET) \
+      $(INSTALLED_VENDOR_KERNEL_RAMDISK_TARGET) \
     )
   endif
 

core/product.mk

@@ -310,6 +310,7 @@ _product_single_value_vars += PRODUCT_BUILD_BOOT_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_INIT_BOOT_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_DEBUG_BOOT_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_VENDOR_BOOT_IMAGE
+_product_single_value_vars += PRODUCT_BUILD_VENDOR_KERNEL_BOOT_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_DEBUG_VENDOR_BOOT_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_VBMETA_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_SUPER_EMPTY_IMAGE

tools/releasetools/add_img_to_target_files.py

@@ -783,6 +783,7 @@ def AddImagesToTargetFiles(filename):
   has_boot = OPTIONS.info_dict.get("no_boot") != "true"
   has_init_boot = OPTIONS.info_dict.get("init_boot") == "true"
   has_vendor_boot = OPTIONS.info_dict.get("vendor_boot") == "true"
+  has_vendor_kernel_boot = OPTIONS.info_dict.get("vendor_kernel_boot") == "true"
 
   # {vendor,odm,product,system_ext,vendor_dlkm,odm_dlkm, system_dlkm, system, system_other}.img
   # can be built from source, or  dropped into target_files.zip as a prebuilt blob.
@@ -868,6 +869,19 @@ def AddImagesToTargetFiles(filename):
         if output_zip:
           vendor_boot_image.AddToZip(output_zip)
 
+  if has_vendor_kernel_boot:
+    banner("vendor_kernel_boot")
+    vendor_kernel_boot_image = common.GetVendorBootImage(
+        "IMAGES/vendor_kernel_boot.img", "vendor_kernel_boot.img", OPTIONS.input_tmp,
+        "VENDOR_KERNEL_BOOT")
+    if vendor_kernel_boot_image:
+      partitions['vendor_kernel_boot'] = os.path.join(OPTIONS.input_tmp, "IMAGES",
+                                               "vendor_kernel_boot.img")
+      if not os.path.exists(partitions['vendor_kernel_boot']):
+        vendor_kernel_boot_image.WriteToDir(OPTIONS.input_tmp)
+        if output_zip:
+          vendor_kernel_boot_image.AddToZip(output_zip)
+
   recovery_image = None
   if has_recovery:
     banner("recovery")