Add vendor_dlkm partition.

Test: define vendor_dlkm for CF.
Bug: 156020364

Change-Id: I459059e1c20df7a285a377b8b3bbc8decc60b124

core/Makefile

@@ -1177,7 +1177,14 @@ ifeq ($(TARGET_USERIMAGES_USE_F2FS),true)
 INTERNAL_USERIMAGES_DEPS += $(MKF2FSUSERIMG)
 endif
 
-ifneq ($(filter $(BOARD_PRODUCTIMAGE_FILE_SYSTEM_TYPE) $(BOARD_SYSTEM_EXTIMAGE_FILE_SYSTEM_TYPE) $(BOARD_ODMIMAGE_FILE_SYSTEM_TYPE) $(BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE) $(BOARD_SYSTEMIMAGE_FILE_SYSTEM_TYPE),squashfs),)
+ifneq ($(filter \
+    $(BOARD_PRODUCTIMAGE_FILE_SYSTEM_TYPE) \
+    $(BOARD_SYSTEM_EXTIMAGE_FILE_SYSTEM_TYPE) \
+    $(BOARD_ODMIMAGE_FILE_SYSTEM_TYPE) \
+    $(BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE) \
+    $(BOARD_SYSTEMIMAGE_FILE_SYSTEM_TYPE) \
+    $(BOARD_VENDOR_DLKMIMAGE_FILE_SYSTEM_TYPE) \
+  ,squashfs),)
 INTERNAL_USERIMAGES_DEPS += $(MKSQUASHFSUSERIMG)
 endif
 
@@ -1207,7 +1214,7 @@ endif
 endif # PRODUCT_USE_DYNAMIC_PARTITIONS
 
 # $(1): the path of the output dictionary file
-# $(2): a subset of "system vendor cache userdata product system_ext oem odm"
+# $(2): a subset of "system vendor cache userdata product system_ext oem odm vendor_dlkm"
 # $(3): additional "key=value" pairs to append to the dictionary file.
 define generate-image-prop-dictionary
 $(if $(filter $(2),system),\
@@ -1303,6 +1310,20 @@ $(if $(filter $(2),odm),\
     $(hide) echo "odm_selinux_fc=$(SELINUX_FC)" >> $(1)
     $(hide) echo "building_odm_image=$(BUILDING_ODM_IMAGE)" >> $(1)
 )
+$(if $(filter $(2),vendor_dlkm),\
+    $(if $(BOARD_VENDOR_DLKMIMAGE_FILE_SYSTEM_TYPE),$(hide) echo "vendor_dlkm_fs_type=$(BOARD_VENDOR_DLKMIMAGE_FILE_SYSTEM_TYPE)" >> $(1))
+    $(if $(BOARD_VENDOR_DLKMIMAGE_EXTFS_INODE_COUNT),$(hide) echo "vendor_dlkm_extfs_inode_count=$(BOARD_VENDOR_DLKMIMAGE_EXTFS_INODE_COUNT)" >> $(1))
+    $(if $(BOARD_VENDOR_DLKMIMAGE_EXTFS_RSV_PCT),$(hide) echo "vendor_dlkm_extfs_rsv_pct=$(BOARD_VENDOR_DLKMIMAGE_EXTFS_RSV_PCT)" >> $(1))
+    $(if $(BOARD_VENDOR_DLKMIMAGE_PARTITION_SIZE),$(hide) echo "vendor_dlkm_size=$(BOARD_VENDOR_DLKMIMAGE_PARTITION_SIZE)" >> $(1))
+    $(if $(BOARD_VENDOR_DLKMIMAGE_JOURNAL_SIZE),$(hide) echo "vendor_dlkm_journal_size=$(BOARD_VENDOR_DLKMIMAGE_JOURNAL_SIZE)" >> $(1))
+    $(if $(BOARD_VENDOR_DLKMIMAGE_SQUASHFS_COMPRESSOR),$(hide) echo "vendor_dlkm_squashfs_compressor=$(BOARD_VENDOR_DLKMIMAGE_SQUASHFS_COMPRESSOR)" >> $(1))
+    $(if $(BOARD_VENDOR_DLKMIMAGE_SQUASHFS_COMPRESSOR_OPT),$(hide) echo "vendor_dlkm_squashfs_compressor_opt=$(BOARD_VENDOR_DLKMIMAGE_SQUASHFS_COMPRESSOR_OPT)" >> $(1))
+    $(if $(BOARD_VENDOR_DLKMIMAGE_SQUASHFS_BLOCK_SIZE),$(hide) echo "vendor_dlkm_squashfs_block_size=$(BOARD_VENDOR_DLKMIMAGE_SQUASHFS_BLOCK_SIZE)" >> $(1))
+    $(if $(BOARD_VENDOR_DLKMIMAGE_SQUASHFS_DISABLE_4K_ALIGN),$(hide) echo "vendor_dlkm_squashfs_disable_4k_align=$(BOARD_VENDOR_DLKMIMAGE_SQUASHFS_DISABLE_4K_ALIGN)" >> $(1))
+    $(if $(BOARD_VENDOR_DLKMIMAGE_PARTITION_RESERVED_SIZE),$(hide) echo "vendor_dlkm_reserved_size=$(BOARD_VENDOR_DLKMIMAGE_PARTITION_RESERVED_SIZE)" >> $(1))
+    $(hide) echo "vendor_dlkm_selinux_fc=$(SELINUX_FC)" >> $(1)
+    $(hide) echo "building_vendor_dlkm_image=$(BUILDING_VENDOR_DLKM_IMAGE)" >> $(1)
+)
 $(if $(filter $(2),oem),\
     $(if $(BOARD_OEMIMAGE_PARTITION_SIZE),$(hide) echo "oem_size=$(BOARD_OEMIMAGE_PARTITION_SIZE)" >> $(1))
     $(if $(BOARD_OEMIMAGE_JOURNAL_SIZE),$(hide) echo "oem_journal_size=$(BOARD_OEMIMAGE_JOURNAL_SIZE)" >> $(1))
@@ -1329,6 +1350,7 @@ $(if $(PRODUCT_SYSTEM_VERITY_PARTITION),$(hide) echo "system_verity_block_device
 $(if $(PRODUCT_VENDOR_VERITY_PARTITION),$(hide) echo "vendor_verity_block_device=$(PRODUCT_VENDOR_VERITY_PARTITION)" >> $(1))
 $(if $(PRODUCT_PRODUCT_VERITY_PARTITION),$(hide) echo "product_verity_block_device=$(PRODUCT_PRODUCT_VERITY_PARTITION)" >> $(1))
 $(if $(PRODUCT_SYSTEM_EXT_VERITY_PARTITION),$(hide) echo "system_ext_verity_block_device=$(PRODUCT_SYSTEM_EXT_VERITY_PARTITION)" >> $(1))
+$(if $(PRODUCT_VENDOR_DLKM_VERITY_PARTITION),$(hide) echo "vendor_dlkm_verity_block_device=$(PRODUCT_VENDOR_DLKM_VERITY_PARTITION)" >> $(1))
 $(if $(PRODUCT_SUPPORTS_VBOOT),$(hide) echo "vboot=$(PRODUCT_SUPPORTS_VBOOT)" >> $(1))
 $(if $(PRODUCT_SUPPORTS_VBOOT),$(hide) echo "vboot_key=$(PRODUCT_VBOOT_SIGNING_KEY)" >> $(1))
 $(if $(PRODUCT_SUPPORTS_VBOOT),$(hide) echo "vboot_subkey=$(PRODUCT_VBOOT_SIGNING_SUBKEY)" >> $(1))
@@ -1377,6 +1399,14 @@ $(if $(BOARD_AVB_ENABLE),\
         $(hide) echo "avb_odm_key_path=$(BOARD_AVB_ODM_KEY_PATH)" >> $(1)
         $(hide) echo "avb_odm_algorithm=$(BOARD_AVB_ODM_ALGORITHM)" >> $(1)
         $(hide) echo "avb_odm_rollback_index_location=$(BOARD_AVB_ODM_ROLLBACK_INDEX_LOCATION)" >> $(1)))
+$(if $(BOARD_AVB_ENABLE),$(hide) echo "avb_vendor_dlkm_hashtree_enable=$(BOARD_AVB_ENABLE)" >> $(1))
+$(if $(BOARD_AVB_ENABLE),\
+    $(hide) echo "avb_vendor_dlkm_add_hashtree_footer_args=$(BOARD_AVB_VENDOR_DLKM_ADD_HASHTREE_FOOTER_ARGS)" >> $(1))
+$(if $(BOARD_AVB_ENABLE),\
+    $(if $(BOARD_AVB_VENDOR_DLKM_KEY_PATH),\
+        $(hide) echo "avb_vendor_dlkm_key_path=$(BOARD_AVB_VENDOR_DLKM_KEY_PATH)" >> $(1)
+        $(hide) echo "avb_vendor_dlkm_algorithm=$(BOARD_AVB_VENDOR_DLKM_ALGORITHM)" >> $(1)
+        $(hide) echo "avb_vendor_dlkm_rollback_index_location=$(BOARD_AVB_VENDOR_DLKM_ROLLBACK_INDEX_LOCATION)" >> $(1)))
 $(if $(filter true,$(BOARD_USES_RECOVERY_AS_BOOT)),\
     $(hide) echo "recovery_as_boot=true" >> $(1))
 $(if $(filter true,$(BOARD_BUILD_SYSTEM_ROOT_IMAGE)),\
@@ -1414,6 +1444,9 @@ endif
 ifdef BUILDING_ODM_IMAGE
   PROP_DICTIONARY_IMAGES += odm
 endif
+ifdef BUILDING_VENDOR_DLKM_IMAGE
+  PROP_DICTIONARY_IMAGES += vendor_dlkm
+endif
 define generate-userimage-prop-dictionary
   $(call generate-image-prop-dictionary,$(1),$(PROP_DICTIONARY_IMAGES),$(2))
 endef
@@ -2406,6 +2439,9 @@ endif
 ifdef BUILDING_ODM_IMAGE
 	echo "-D $(TARGET_OUT_ODM)" >> $@.lst
 endif
+ifdef BUILDING_VENDOR_DLKM_IMAGE
+	echo "-D $(TARGET_OUT_VENDOR_DLKM)" >> $@.lst
+endif
 ifneq ($(PDK_PLATFORM_JAVA_ZIP_CONTENTS),)
 	echo "-C $(OUT_DIR)" >> $@.lst
 	for f in $(filter-out $(PRIVATE_DEX_FILES),$(addprefix -f $(OUT_DIR)/,$(PDK_PLATFORM_JAVA_ZIP_CONTENTS))); do \
@@ -2872,6 +2908,61 @@ INSTALLED_ODMIMAGE_TARGET := $(PRODUCT_OUT)/odm.img
 $(eval $(call copy-one-file,$(BOARD_PREBUILT_ODMIMAGE),$(INSTALLED_ODMIMAGE_TARGET)))
 endif
 
+# -----------------------------------------------------------------
+# vendor_dlkm partition image
+ifdef BUILDING_VENDOR_DLKM_IMAGE
+INTERNAL_VENDOR_DLKMIMAGE_FILES := \
+    $(filter $(TARGET_OUT_VENDOR_DLKM)/%,\
+      $(ALL_DEFAULT_INSTALLED_MODULES)\
+      $(ALL_PDK_FUSION_FILES)) \
+    $(PDK_FUSION_SYMLINK_STAMP)
+# platform.zip depends on $(INTERNAL_VENDOR_DLKMIMAGE_FILES).
+$(INSTALLED_PLATFORM_ZIP) : $(INTERNAL_VENDOR_DLKMIMAGE_FILES)
+
+INSTALLED_FILES_FILE_VENDOR_DLKM := $(PRODUCT_OUT)/installed-files-vendor_dlkm.txt
+INSTALLED_FILES_JSON_VENDOR_DLKM := $(INSTALLED_FILES_FILE_VENDOR_DLKM:.txt=.json)
+$(INSTALLED_FILES_FILE_VENDOR_DLKM): .KATI_IMPLICIT_OUTPUTS := $(INSTALLED_FILES_JSON_VENDOR_DLKM)
+$(INSTALLED_FILES_FILE_VENDOR_DLKM) : $(INTERNAL_VENDOR_DLKMIMAGE_FILES) $(FILESLIST) $(FILESLIST_UTIL)
+	@echo Installed file list: $@
+	@mkdir -p $(dir $@)
+	@rm -f $@
+	$(hide) $(FILESLIST) $(TARGET_OUT_VENDOR_DLKM) > $(@:.txt=.json)
+	$(hide) $(FILESLIST_UTIL) -c $(@:.txt=.json) > $@
+
+vendor_dlkmimage_intermediates := \
+    $(call intermediates-dir-for,PACKAGING,vendor_dlkm)
+BUILT_VENDOR_DLKMIMAGE_TARGET := $(PRODUCT_OUT)/vendor_dlkm.img
+define build-vendor_dlkmimage-target
+  $(call pretty,"Target vendor_dlkm fs image: $(INSTALLED_VENDOR_DLKMIMAGE_TARGET)")
+  @mkdir -p $(TARGET_OUT_VENDOR_DLKM)
+  @mkdir -p $(vendor_dlkmimage_intermediates) && rm -rf $(vendor_dlkmimage_intermediates)/vendor_dlkm_image_info.txt
+  $(call generate-userimage-prop-dictionary, $(vendor_dlkmimage_intermediates)/vendor_dlkm_image_info.txt, skip_fsck=true)
+  PATH=$(INTERNAL_USERIMAGES_BINARY_PATHS):$$PATH \
+      $(BUILD_IMAGE) \
+          $(TARGET_OUT_VENDOR_DLKM) $(vendor_dlkmimage_intermediates)/vendor_dlkm_image_info.txt \
+          $(INSTALLED_VENDOR_DLKMIMAGE_TARGET) $(TARGET_OUT)
+  $(call assert-max-image-size,$(INSTALLED_VENDOR_DLKMIMAGE_TARGET),$(BOARD_VENDOR_DLKMIMAGE_PARTITION_SIZE))
+endef
+
+# We just build this directly to the install location.
+INSTALLED_VENDOR_DLKMIMAGE_TARGET := $(BUILT_VENDOR_DLKMIMAGE_TARGET)
+$(INSTALLED_VENDOR_DLKMIMAGE_TARGET): \
+    $(INTERNAL_USERIMAGES_DEPS) \
+    $(INTERNAL_VENDOR_DLKMIMAGE_FILES) \
+    $(INSTALLED_FILES_FILE_VENDOR_DLKM)
+	$(build-vendor_dlkmimage-target)
+
+.PHONY: vendor_dlkmimage-nodeps vdnod
+vendor_dlkmimage-nodeps vdnod: | $(INTERNAL_USERIMAGES_DEPS)
+	$(build-vendor_dlkmimage-target)
+
+sync: $(INTERNAL_VENDOR_DLKMIMAGE_FILES)
+
+else ifdef BOARD_PREBUILT_VENDOR_DLKMIMAGE
+INSTALLED_VENDOR_DLKMIMAGE_TARGET := $(PRODUCT_OUT)/vendor_dlkm.img
+$(eval $(call copy-one-file,$(BOARD_PREBUILT_VENDOR_DLKMIMAGE),$(INSTALLED_VENDOR_DLKMIMAGE_TARGET)))
+endif
+
 # -----------------------------------------------------------------
 # dtbo image
 ifdef BOARD_PREBUILT_DTBOIMAGE
@@ -3028,6 +3119,10 @@ BOARD_AVB_ODM_ADD_HASHTREE_FOOTER_ARGS += \
     --prop com.android.build.odm.fingerprint:$(BUILD_FINGERPRINT_FROM_FILE) \
     --prop com.android.build.odm.os_version:$(PLATFORM_VERSION)
 
+BOARD_AVB_VENDOR_DLKM_ADD_HASHTREE_FOOTER_ARGS += \
+    --prop com.android.build.vendor_dlkm.fingerprint:$(BUILD_FINGERPRINT_FROM_FILE) \
+    --prop com.android.build.vendor_dlkm.os_version:$(PLATFORM_VERSION_LAST_STABLE)
+
 BOARD_AVB_DTBO_ADD_HASH_FOOTER_ARGS += \
     --prop com.android.build.dtbo.fingerprint:$(BUILD_FINGERPRINT_FROM_FILE)
 
@@ -3047,6 +3142,11 @@ BOARD_AVB_ODM_ADD_HASHTREE_FOOTER_ARGS += \
     --prop com.android.build.odm.security_patch:$(ODM_SECURITY_PATCH)
 endif
 
+ifdef VENDOR_DLKM_SECURITY_PATCH
+BOARD_AVB_VENDOR_DLKM_ADD_HASHTREE_FOOTER_ARGS += \
+    --prop com.android.build.vendor_dlkm.security_patch:$(VENDOR_DLKM_SECURITY_PATCH)
+endif
+
 BOOT_FOOTER_ARGS := BOARD_AVB_BOOT_ADD_HASH_FOOTER_ARGS
 VENDOR_BOOT_FOOTER_ARGS := BOARD_AVB_VENDOR_BOOT_ADD_HASH_FOOTER_ARGS
 DTBO_FOOTER_ARGS := BOARD_AVB_DTBO_ADD_HASH_FOOTER_ARGS
@@ -3056,6 +3156,7 @@ RECOVERY_FOOTER_ARGS := BOARD_AVB_RECOVERY_ADD_HASH_FOOTER_ARGS
 PRODUCT_FOOTER_ARGS := BOARD_AVB_PRODUCT_ADD_HASHTREE_FOOTER_ARGS
 SYSTEM_EXT_FOOTER_ARGS := BOARD_AVB_SYSTEM_EXT_ADD_HASHTREE_FOOTER_ARGS
 ODM_FOOTER_ARGS := BOARD_AVB_ODM_ADD_HASHTREE_FOOTER_ARGS
+VENDOR_DLKM_FOOTER_ARGS := BOARD_AVB_VENDOR_DLKM_ADD_HASHTREE_FOOTER_ARGS
 
 # Helper function that checks and sets required build variables for an AVB chained partition.
 # $(1): the partition to enable AVB chain, e.g., boot or system or vbmeta_system.
@@ -3150,6 +3251,10 @@ ifdef INSTALLED_ODMIMAGE_TARGET
 $(eval $(call check-and-set-avb-args,odm))
 endif
 
+ifdef INSTALLED_VENDOR_DLKMIMAGE_TARGET
+$(eval $(call check-and-set-avb-args,vendor_dlkm))
+endif
+
 ifdef INSTALLED_DTBOIMAGE_TARGET
 $(eval $(call check-and-set-avb-args,dtbo))
 endif
@@ -3230,6 +3335,9 @@ define extract-avb-chain-public-keys
   $(if $(BOARD_AVB_ODM_KEY_PATH),\
     $(hide) $(AVBTOOL) extract_public_key --key $(BOARD_AVB_ODM_KEY_PATH) \
       --output $(1)/odm.avbpubkey)
+  $(if $(BOARD_AVB_VENDOR_DLKM_KEY_PATH),\
+    $(hide) $(AVBTOOL) extract_public_key --key $(BOARD_AVB_VENDOR_DLKM_KEY_PATH) \
+      --output $(1)/vendor_dlkm.avbpubkey)
   $(if $(BOARD_AVB_DTBO_KEY_PATH),\
     $(hide) $(AVBTOOL) extract_public_key --key $(BOARD_AVB_DTBO_KEY_PATH) \
       --output $(1)/dtbo.avbpubkey)
@@ -3312,6 +3420,7 @@ $(INSTALLED_VBMETAIMAGE_TARGET): \
 	    $(INSTALLED_PRODUCTIMAGE_TARGET) \
 	    $(INSTALLED_SYSTEM_EXTIMAGE_TARGET) \
 	    $(INSTALLED_ODMIMAGE_TARGET) \
+	    $(INSTALLED_VENDOR_DLKMIMAGE_TARGET) \
 	    $(INSTALLED_DTBOIMAGE_TARGET) \
 	    $(INSTALLED_CUSTOMIMAGES_TARGET) \
 	    $(INSTALLED_RECOVERYIMAGE_TARGET) \
@@ -3334,7 +3443,9 @@ endif # BOARD_AVB_ENABLE
 # -----------------------------------------------------------------
 # Check VINTF of build
 
+# Note: vendor_dlkm does not have VINTF files.
 ifeq (,$(TARGET_BUILD_UNBUNDLED))
+
 intermediates := $(call intermediates-dir-for,PACKAGING,check_vintf_all)
 check_vintf_all_deps :=
 
@@ -4119,6 +4230,7 @@ $(BUILT_TARGET_FILES_PACKAGE): \
 	    $(INSTALLED_SYSTEM_EXTIMAGE_TARGET) \
 	    $(INSTALLED_VBMETAIMAGE_TARGET) \
 	    $(INSTALLED_ODMIMAGE_TARGET) \
+	    $(INSTALLED_VENDOR_DLKMIMAGE_TARGET) \
 	    $(INSTALLED_DTBOIMAGE_TARGET) \
 	    $(INSTALLED_CUSTOMIMAGES_TARGET) \
 	    $(INTERNAL_SYSTEMOTHERIMAGE_FILES) \
@@ -4134,6 +4246,7 @@ $(BUILT_TARGET_FILES_PACKAGE): \
 	    $(PRODUCT_PRODUCT_BASE_FS_PATH) \
 	    $(PRODUCT_SYSTEM_EXT_BASE_FS_PATH) \
 	    $(PRODUCT_ODM_BASE_FS_PATH) \
+	    $(PRODUCT_VENDOR_DLKM_BASE_FS_PATH) \
 	    $(LPMAKE) \
 	    $(SELINUX_FC) \
 	    $(INSTALLED_MISC_INFO_TARGET) \
@@ -4271,6 +4384,11 @@ ifdef BUILDING_ODM_IMAGE
 	$(hide) $(call package_files-copy-root, \
 	    $(TARGET_OUT_ODM),$(zip_root)/ODM)
 endif
+ifdef BUILDING_VENDOR_DLKM_IMAGE
+	@# Contents of the vendor_dlkm image
+	$(hide) $(call package_files-copy-root, \
+	    $(TARGET_OUT_VENDOR_DLKM),$(zip_root)/VENDOR_DLKM)
+endif
 ifdef BUILDING_SYSTEM_OTHER_IMAGE
 	@# Contents of the system_other image
 	$(hide) $(call package_files-copy-root, \
@@ -4316,6 +4434,10 @@ ifneq ($(PRODUCT_ODM_BASE_FS_PATH),)
 	$(hide) cp $(PRODUCT_ODM_BASE_FS_PATH) \
 	  $(zip_root)/META/$(notdir $(PRODUCT_ODM_BASE_FS_PATH))
 endif
+ifneq ($(PRODUCT_VENDOR_DLKM_BASE_FS_PATH),)
+	$(hide) cp $(PRODUCT_VENDOR_DLKM_BASE_FS_PATH) \
+	  $(zip_root)/META/$(notdir $(PRODUCT_VENDOR_DLKM_BASE_FS_PATH))
+endif
 ifeq ($(TARGET_OTA_ALLOW_NON_AB),true)
 ifneq ($(INSTALLED_RECOVERYIMAGE_TARGET),)
 	$(hide) PATH=$(INTERNAL_USERIMAGES_BINARY_PATHS):$$PATH MKBOOTIMG=$(MKBOOTIMG) \
@@ -4361,6 +4483,10 @@ ifdef BOARD_PREBUILT_ODMIMAGE
 	$(hide) mkdir -p $(zip_root)/IMAGES
 	$(hide) cp $(INSTALLED_ODMIMAGE_TARGET) $(zip_root)/IMAGES/
 endif
+ifdef BOARD_PREBUILT_VENDOR_DLKIMMAGE
+	$(hide) mkdir -p $(zip_root)/IMAGES
+	$(hide) cp $(INSTALLED_VENDOR_DLKIMMAGE_TARGET) $(zip_root)/IMAGES/
+endif
 ifdef BOARD_PREBUILT_DTBOIMAGE
 	$(hide) mkdir -p $(zip_root)/PREBUILT_IMAGES
 	$(hide) cp $(INSTALLED_DTBOIMAGE_TARGET) $(zip_root)/PREBUILT_IMAGES/
@@ -4391,6 +4517,9 @@ ifdef BUILDING_SYSTEM_EXT_IMAGE
 endif
 ifdef BUILDING_ODM_IMAGE
 	$(hide) $(call fs_config,$(zip_root)/ODM,odm/) > $(zip_root)/META/odm_filesystem_config.txt
+endif
+ifdef BUILDING_VENDOR_DLKM_IMAGE
+	$(hide) $(call fs_config,$(zip_root)/VENDOR_DLKM,vendor_dlkm/) > $(zip_root)/META/vendor_dlkm_filesystem_config.txt
 endif
 	@# ROOT always contains the files for the root under normal boot.
 	$(hide) $(call fs_config,$(zip_root)/ROOT,) > $(zip_root)/META/root_filesystem_config.txt
@@ -4550,6 +4679,7 @@ $(SYMBOLS_ZIP): $(INSTALLED_SYSTEMIMAGE_TARGET) \
 	    $(INSTALLED_PRODUCTIMAGE_TARGET) \
 	    $(INSTALLED_SYSTEM_EXTIMAGE_TARGET) \
 	    $(INSTALLED_ODMIMAGE_TARGET) \
+	    $(INSTALLED_VENDOR_DLKMIMAGE_TARGET) \
 	    $(updater_dep)
 endif
 $(SYMBOLS_ZIP): PRIVATE_LIST_FILE := $(call intermediates-dir-for,PACKAGING,symbols)/filelist
@@ -4575,7 +4705,8 @@ $(COVERAGE_ZIP): $(INSTALLED_SYSTEMIMAGE_TARGET) \
 	    $(INSTALLED_VENDORIMAGE_TARGET) \
 	    $(INSTALLED_PRODUCTIMAGE_TARGET) \
 	    $(INSTALLED_SYSTEM_EXTIMAGE_TARGET) \
-	    $(INSTALLED_ODMIMAGE_TARGET)
+	    $(INSTALLED_ODMIMAGE_TARGET) \
+	    $(INSTALLED_VENDOR_DLKMIMAGE_TARGET)
 endif
 $(COVERAGE_ZIP): PRIVATE_LIST_FILE := $(call intermediates-dir-for,PACKAGING,coverage)/filelist
 $(COVERAGE_ZIP): $(SOONG_ZIP)
@@ -4652,6 +4783,7 @@ $(PROGUARD_DICT_ZIP): \
     $(INSTALLED_PRODUCTIMAGE_TARGET) \
     $(INSTALLED_SYSTEM_EXTIMAGE_TARGET) \
     $(INSTALLED_ODMIMAGE_TARGET) \
+    $(INSTALLED_VENDOR_DLKMIMAGE_TARGET) \
     $(updater_dep)
 endif
 $(PROGUARD_DICT_ZIP): PRIVATE_LIST_FILE := $(call intermediates-dir-for,PACKAGING,proguard)/filelist
@@ -4890,6 +5022,17 @@ odmimage: $(INSTALLED_QEMU_ODMIMAGE)
 droidcore: $(INSTALLED_QEMU_ODMIMAGE)
 endif
 
+ifdef INSTALLED_VENDOR_DLKMIMAGE_TARGET
+INSTALLED_QEMU_VENDOR_DLKMIMAGE := $(PRODUCT_OUT)/vendor_dlkm-qemu.img
+$(INSTALLED_QEMU_VENDOR_DLKMIMAGE): $(INSTALLED_VENDOR_DLKMIMAGE_TARGET) $(MK_QEMU_IMAGE_SH) $(SGDISK_HOST)
+	@echo Create vendor_dlkm-qemu.img
+	(export SGDISK=$(SGDISK_HOST); $(MK_QEMU_IMAGE_SH) $(INSTALLED_VENDOR_DLKMIMAGE_TARGET))
+
+vendor_dlkmimage: $(INSTALLED_QEMU_VENDOR_DLKMIMAGE)
+droidcore: $(INSTALLED_QEMU_VENDOR_DLKMIMAGE)
+endif
+
+
 QEMU_VERIFIED_BOOT_PARAMS := $(PRODUCT_OUT)/VerifiedBootParams.textproto
 $(QEMU_VERIFIED_BOOT_PARAMS): $(INSTALLED_VBMETAIMAGE_TARGET) $(INSTALLED_SYSTEMIMAGE_TARGET) \
     $(MK_VBMETA_BOOT_KERNEL_CMDLINE_SH) $(AVBTOOL)

core/board_config.mk

@@ -72,12 +72,15 @@ _board_strip_readonly_list += \
   BOARD_SYSTEM_EXTIMAGE_FILE_SYSTEM_TYPE \
   BOARD_ODMIMAGE_PARTITION_SIZE \
   BOARD_ODMIMAGE_FILE_SYSTEM_TYPE \
+  BOARD_VENDOR_DLKMIMAGE_PARTITION_SIZE \
+  BOARD_VENDOR_DLKMIMAGE_FILE_SYSTEM_TYPE \
 
 # Logical partitions related variables.
 _dynamic_partitions_var_list += \
   BOARD_SYSTEMIMAGE_PARTITION_RESERVED_SIZE \
   BOARD_VENDORIMAGE_PARTITION_RESERVED_SIZE \
   BOARD_ODMIMAGE_PARTITION_RESERVED_SIZE \
+  BOARD_VENDOR_DLKMIMAGE_PARTITION_RESERVED_SIZE \
   BOARD_PRODUCTIMAGE_PARTITION_RESERVED_SIZE \
   BOARD_SYSTEM_EXTIMAGE_PARTITION_RESERVED_SIZE \
   BOARD_SUPER_PARTITION_SIZE \
@@ -511,6 +514,40 @@ ifdef BOARD_PREBUILT_SYSTEM_EXTIMAGE
 endif
 .KATI_READONLY := BUILDING_SYSTEM_EXT_IMAGE
 
+###########################################
+# Now we can substitute with the real value of TARGET_COPY_OUT_VENDOR_DLKM
+ifeq ($(TARGET_COPY_OUT_VENDOR_DLKM),$(_vendor_dlkm_path_placeholder))
+  TARGET_COPY_OUT_VENDOR_DLKM := $(TARGET_COPY_OUT_VENDOR)/vendor_dlkm
+else ifeq ($(filter vendor_dlkm system/vendor/vendor_dlkm vendor/vendor_dlkm,$(TARGET_COPY_OUT_VENDOR_DLKM)),)
+  $(error TARGET_COPY_OUT_VENDOR_DLKM must be either 'vendor_dlkm', 'system/vendor/vendor_dlkm' or 'vendor/vendor_dlkm', seeing '$(TARGET_COPY_OUT_VENDOR_DLKM)'.)
+endif
+PRODUCT_COPY_FILES := $(subst $(_vendor_dlkm_path_placeholder),$(TARGET_COPY_OUT_VENDOR_DLKM),$(PRODUCT_COPY_FILES))
+
+BOARD_USES_VENDOR_DLKMIMAGE :=
+ifdef BOARD_PREBUILT_VENDOR_DLKMIMAGE
+  BOARD_USES_VENDOR_DLKMIMAGE := true
+endif
+ifdef BOARD_VENDOR_DLKMIMAGE_FILE_SYSTEM_TYPE
+  BOARD_USES_VENDOR_DLKMIMAGE := true
+endif
+$(call check_image_config,vendor_dlkm)
+
+BUILDING_VENDOR_DLKM_IMAGE :=
+ifeq ($(PRODUCT_BUILD_VENDOR_DLKM_IMAGE),)
+  ifdef BOARD_VENDOR_DLKMIMAGE_FILE_SYSTEM_TYPE
+    BUILDING_VENDOR_DLKM_IMAGE := true
+  endif
+else ifeq ($(PRODUCT_BUILD_VENDOR_DLKM_IMAGE),true)
+  BUILDING_VENDOR_DLKM_IMAGE := true
+  ifndef BOARD_VENDOR_DLKMIMAGE_FILE_SYSTEM_TYPE
+    $(error PRODUCT_BUILD_VENDOR_DLKM_IMAGE set to true, but BOARD_VENDOR_DLKMIMAGE_FILE_SYSTEM_TYPE not defined)
+  endif
+endif
+ifdef BOARD_PREBUILT_VENDOR_DLKMIMAGE
+  BUILDING_VENDOR_DLKM_IMAGE :=
+endif
+.KATI_READONLY := BUILDING_VENDOR_DLKM_IMAGE
+
 ###########################################
 # Now we can substitute with the real value of TARGET_COPY_OUT_ODM
 ifeq ($(TARGET_COPY_OUT_ODM),$(_odm_path_placeholder))

core/config.mk

@@ -930,6 +930,13 @@ $(error Should not define BOARD_ODMIMAGE_PARTITION_SIZE and \
 endif
 endif
 
+ifneq ($(BOARD_VENDOR_DLKMIMAGE_PARTITION_SIZE),)
+ifneq ($(BOARD_VENDOR_DLKMIMAGE_PARTITION_RESERVED_SIZE),)
+$(error Should not define BOARD_VENDOR_DLKMIMAGE_PARTITION_SIZE and \
+    BOARD_VENDOR_DLKMIMAGE_PARTITION_RESERVED_SIZE together)
+endif
+endif
+
 ifneq ($(BOARD_PRODUCTIMAGE_PARTITION_SIZE),)
 ifneq ($(BOARD_PRODUCTIMAGE_PARTITION_RESERVED_SIZE),)
 $(error Should not define BOARD_PRODUCTIMAGE_PARTITION_SIZE and \
@@ -965,7 +972,7 @@ $(foreach group,$(call to-upper,$(BOARD_SUPER_PARTITION_GROUPS)), \
 )
 
 # BOARD_*_PARTITION_LIST: a list of the following tokens
-valid_super_partition_list := system vendor product system_ext odm
+valid_super_partition_list := system vendor product system_ext odm vendor_dlkm
 $(foreach group,$(call to-upper,$(BOARD_SUPER_PARTITION_GROUPS)), \
     $(if $(filter-out $(valid_super_partition_list),$(BOARD_$(group)_PARTITION_LIST)), \
         $(error BOARD_$(group)_PARTITION_LIST contains invalid partition name \

core/envsetup.mk

@@ -253,6 +253,7 @@ _vendor_path_placeholder := ||VENDOR-PATH-PH||
 _product_path_placeholder := ||PRODUCT-PATH-PH||
 _system_ext_path_placeholder := ||SYSTEM_EXT-PATH-PH||
 _odm_path_placeholder := ||ODM-PATH-PH||
+_vendor_dlkm_path_placeholder := ||VENDOR_DLKM-PATH-PH||
 TARGET_COPY_OUT_VENDOR := $(_vendor_path_placeholder)
 TARGET_COPY_OUT_VENDOR_RAMDISK := vendor-ramdisk
 TARGET_COPY_OUT_PRODUCT := $(_product_path_placeholder)
@@ -261,6 +262,7 @@ TARGET_COPY_OUT_PRODUCT := $(_product_path_placeholder)
 TARGET_COPY_OUT_PRODUCT_SERVICES := $(_product_path_placeholder)
 TARGET_COPY_OUT_SYSTEM_EXT := $(_system_ext_path_placeholder)
 TARGET_COPY_OUT_ODM := $(_odm_path_placeholder)
+TARGET_COPY_OUT_VENDOR_DLKM := $(_vendor_dlkm_path_placeholder)
 
 # Returns the non-sanitized version of the path provided in $1.
 define get_non_asan_path
@@ -719,6 +721,40 @@ $(TARGET_2ND_ARCH_VAR_PREFIX)TARGET_OUT_ODM_APPS_PRIVILEGED := $(TARGET_OUT_ODM_
   $(TARGET_2ND_ARCH_VAR_PREFIX)TARGET_OUT_ODM_APPS \
   $(TARGET_2ND_ARCH_VAR_PREFIX)TARGET_OUT_ODM_APPS_PRIVILEGED
 
+TARGET_OUT_VENDOR_DLKM := $(PRODUCT_OUT)/$(TARGET_COPY_OUT_VENDOR_DLKM)
+
+TARGET_OUT_VENDOR_DLKM_ETC := $(TARGET_OUT_VENDOR_DLKM)/etc
+.KATI_READONLY := \
+  TARGET_OUT_VENDOR_DLKM_ETC
+
+# Unlike other partitions, vendor_dlkm should only contain kernel modules.
+TARGET_OUT_VENDOR_DLKM_EXECUTABLES :=
+TARGET_OUT_VENDOR_DLKM_OPTIONAL_EXECUTABLES :=
+TARGET_OUT_VENDOR_DLKM_SHARED_LIBRARIES :=
+TARGET_OUT_VENDOR_DLKM_RENDERSCRIPT_BITCODE :=
+TARGET_OUT_VENDOR_DLKM_JAVA_LIBRARIES :=
+TARGET_OUT_VENDOR_DLKM_APPS :=
+TARGET_OUT_VENDOR_DLKM_APPS_PRIVILEGED :=
+$(TARGET_2ND_ARCH_VAR_PREFIX)TARGET_OUT_VENDOR_DLKM_EXECUTABLES :=
+$(TARGET_2ND_ARCH_VAR_PREFIX)TARGET_OUT_VENDOR_DLKM_SHARED_LIBRARIES :=
+$(TARGET_2ND_ARCH_VAR_PREFIX)TARGET_OUT_VENDOR_DLKM_RENDERSCRIPT_BITCODE :=
+$(TARGET_2ND_ARCH_VAR_PREFIX)TARGET_OUT_VENDOR_DLKM_APPS :=
+$(TARGET_2ND_ARCH_VAR_PREFIX)TARGET_OUT_VENDOR_DLKM_APPS_PRIVILEGED :=
+$(KATI_obsolete_var \
+    TARGET_OUT_VENDOR_DLKM_EXECUTABLES \
+    TARGET_OUT_VENDOR_DLKM_OPTIONAL_EXECUTABLES \
+    TARGET_OUT_VENDOR_DLKM_SHARED_LIBRARIES \
+    TARGET_OUT_VENDOR_DLKM_RENDERSCRIPT_BITCODE \
+    TARGET_OUT_VENDOR_DLKM_JAVA_LIBRARIES \
+    TARGET_OUT_VENDOR_DLKM_APPS \
+    TARGET_OUT_VENDOR_DLKM_APPS_PRIVILEGED \
+    $(TARGET_2ND_ARCH_VAR_PREFIX)TARGET_OUT_VENDOR_DLKM_EXECUTABLES \
+    $(TARGET_2ND_ARCH_VAR_PREFIX)TARGET_OUT_VENDOR_DLKM_SHARED_LIBRARIES \
+    $(TARGET_2ND_ARCH_VAR_PREFIX)TARGET_OUT_VENDOR_DLKM_RENDERSCRIPT_BITCODE \
+    $(TARGET_2ND_ARCH_VAR_PREFIX)TARGET_OUT_VENDOR_DLKM_APPS \
+    $(TARGET_2ND_ARCH_VAR_PREFIX)TARGET_OUT_VENDOR_DLKM_APPS_PRIVILEGED \
+    , vendor_dlkm should not contain any executables, libraries, or apps)
+
 TARGET_OUT_PRODUCT := $(PRODUCT_OUT)/$(TARGET_COPY_OUT_PRODUCT)
 TARGET_OUT_PRODUCT_EXECUTABLES := $(TARGET_OUT_PRODUCT)/bin
 .KATI_READONLY := TARGET_OUT_PRODUCT

core/main.mk

@@ -1141,7 +1141,8 @@ define resolve-product-relative-paths
     $(subst $(_product_path_placeholder),$(TARGET_COPY_OUT_PRODUCT),\
       $(subst $(_system_ext_path_placeholder),$(TARGET_COPY_OUT_SYSTEM_EXT),\
         $(subst $(_odm_path_placeholder),$(TARGET_COPY_OUT_ODM),\
-          $(foreach p,$(1),$(call append-path,$(PRODUCT_OUT),$(p)$(2)))))))
+          $(subst $(_vendor_dlkm_path_placeholder),$(TARGET_COPY_OUT_VENDOR_DLKM),\
+            $(foreach p,$(1),$(call append-path,$(PRODUCT_OUT),$(p)$(2))))))))
 endef
 
 # Returns modules included automatically as a result of certain BoardConfig
@@ -1519,6 +1520,9 @@ systemextimage: $(INSTALLED_SYSTEM_EXTIMAGE_TARGET)
 .PHONY: odmimage
 odmimage: $(INSTALLED_ODMIMAGE_TARGET)
 
+.PHONY: vendor_dlkmimage
+vendor_dlkmimage: $(INSTALLED_VENDOR_DLKMIMAGE_TARGET)
+
 .PHONY: systemotherimage
 systemotherimage: $(INSTALLED_SYSTEMOTHERIMAGE_TARGET)
 
@@ -1556,6 +1560,7 @@ droidcore: $(filter $(HOST_OUT_ROOT)/%,$(modules_to_install)) \
     $(INSTALLED_VENDOR_DEBUG_RAMDISK_TARGET) \
     $(INSTALLED_VENDOR_DEBUG_BOOTIMAGE_TARGET) \
     $(INSTALLED_ODMIMAGE_TARGET) \
+    $(INSTALLED_VENDOR_DLKMIMAGE_TARGET) \
     $(INSTALLED_SUPERIMAGE_EMPTY_TARGET) \
     $(INSTALLED_PRODUCTIMAGE_TARGET) \
     $(INSTALLED_SYSTEMOTHERIMAGE_TARGET) \
@@ -1565,6 +1570,8 @@ droidcore: $(filter $(HOST_OUT_ROOT)/%,$(modules_to_install)) \
     $(INSTALLED_FILES_JSON_VENDOR) \
     $(INSTALLED_FILES_FILE_ODM) \
     $(INSTALLED_FILES_JSON_ODM) \
+    $(INSTALLED_FILES_FILE_VENDOR_DLKM) \
+    $(INSTALLED_FILES_JSON_VENDOR_DLKM) \
     $(INSTALLED_FILES_FILE_PRODUCT) \
     $(INSTALLED_FILES_JSON_PRODUCT) \
     $(INSTALLED_FILES_FILE_SYSTEM_EXT) \
@@ -1660,6 +1667,8 @@ else ifeq (,$(TARGET_BUILD_UNBUNDLED))
     $(INSTALLED_FILES_JSON_VENDOR) \
     $(INSTALLED_FILES_FILE_ODM) \
     $(INSTALLED_FILES_JSON_ODM) \
+    $(INSTALLED_FILES_FILE_VENDOR_DLKM) \
+    $(INSTALLED_FILES_JSON_VENDOR_DLKM) \
     $(INSTALLED_FILES_FILE_PRODUCT) \
     $(INSTALLED_FILES_JSON_PRODUCT) \
     $(INSTALLED_FILES_FILE_SYSTEM_EXT) \

core/product.mk

@@ -251,6 +251,7 @@ _product_single_value_vars += PRODUCT_VENDOR_VERITY_PARTITION
 _product_single_value_vars += PRODUCT_PRODUCT_VERITY_PARTITION
 _product_single_value_vars += PRODUCT_SYSTEM_EXT_VERITY_PARTITION
 _product_single_value_vars += PRODUCT_ODM_VERITY_PARTITION
+_product_single_value_vars += PRODUCT_VENDOR_DLKM_VERITY_PARTITION
 _product_single_value_vars += PRODUCT_SYSTEM_SERVER_DEBUG_INFO
 _product_single_value_vars += PRODUCT_OTHER_JAVA_DEBUG_INFO
 
@@ -278,6 +279,7 @@ _product_single_value_vars += PRODUCT_VENDOR_BASE_FS_PATH
 _product_single_value_vars += PRODUCT_PRODUCT_BASE_FS_PATH
 _product_single_value_vars += PRODUCT_SYSTEM_EXT_BASE_FS_PATH
 _product_single_value_vars += PRODUCT_ODM_BASE_FS_PATH
+_product_single_value_vars += PRODUCT_VENDOR_DLKM_BASE_FS_PATH
 
 # The first API level this product shipped with
 _product_single_value_vars += PRODUCT_SHIPPING_API_LEVEL
@@ -369,6 +371,7 @@ _product_single_value_vars += PRODUCT_BUILD_VENDOR_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_PRODUCT_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_SYSTEM_EXT_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_ODM_IMAGE
+_product_single_value_vars += PRODUCT_BUILD_VENDOR_DLKM_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_CACHE_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_RAMDISK_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_USERDATA_IMAGE

core/product_config.mk

@@ -399,6 +399,7 @@ $(foreach image, \
     PRODUCT \
     SYSTEM_EXT \
     ODM \
+    VENDOR_DLKM \
     CACHE \
     RAMDISK \
     USERDATA \

core/soong_config.mk

@@ -155,6 +155,7 @@ $(call add_json_bool, Uml,                               $(filter true,$(TARGET_
 $(call add_json_bool, Use_lmkd_stats_log,                $(filter true,$(TARGET_LMKD_STATS_LOG)))
 $(call add_json_str,  VendorPath,                        $(TARGET_COPY_OUT_VENDOR))
 $(call add_json_str,  OdmPath,                           $(TARGET_COPY_OUT_ODM))
+$(call add_json_str,  VendorDlkmPath,                    $(TARGET_COPY_OUT_VENDOR_DLKM))
 $(call add_json_str,  ProductPath,                       $(TARGET_COPY_OUT_PRODUCT))
 $(call add_json_str,  SystemExtPath,                     $(TARGET_COPY_OUT_SYSTEM_EXT))
 $(call add_json_bool, MinimizeJavaDebugInfo,             $(filter true,$(PRODUCT_MINIMIZE_JAVA_DEBUG_INFO)))
@@ -172,6 +173,7 @@ $(call add_json_list, PgoAdditionalProfileDirs,          $(PGO_ADDITIONAL_PROFIL
 
 $(call add_json_list, BoardVendorSepolicyDirs,           $(BOARD_VENDOR_SEPOLICY_DIRS) $(BOARD_SEPOLICY_DIRS))
 $(call add_json_list, BoardOdmSepolicyDirs,              $(BOARD_ODM_SEPOLICY_DIRS))
+$(call add_json_list, BoardVendorDlkmSepolicyDirs,       $(BOARD_VENDOR_DLKM_SEPOLICY_DIRS))
 $(call add_json_list, BoardPlatPublicSepolicyDirs,       $(BOARD_PLAT_PUBLIC_SEPOLICY_DIR))
 $(call add_json_list, BoardPlatPrivateSepolicyDirs,      $(BOARD_PLAT_PRIVATE_SEPOLICY_DIR))
 $(call add_json_list, BoardSepolicyM4Defs,               $(BOARD_SEPOLICY_M4DEFS))

core/tasks/vendor_module_check.mk

@@ -108,10 +108,10 @@ ifneq (,$(filter path all, $(_restrictions)))
 
 $(foreach m, $(_vendor_check_modules), \
   $(if $(filter-out ,$(ALL_MODULES.$(m).INSTALLED)),\
-    $(if $(filter $(TARGET_OUT_VENDOR)/% $(TARGET_OUT_ODM)/% $(HOST_OUT)/%, $(ALL_MODULES.$(m).INSTALLED)),,\
+    $(if $(filter $(TARGET_OUT_VENDOR)/% $(TARGET_OUT_ODM)/% $(TARGET_OUT_VENDOR_DLKM)/% $(HOST_OUT)/%, $(ALL_MODULES.$(m).INSTALLED)),,\
       $(error Error: vendor module "$(m)" in $(ALL_MODULES.$(m).PATH) \
         in product "$(TARGET_PRODUCT)" being installed to \
-        $(ALL_MODULES.$(m).INSTALLED) which is not in the vendor tree or odm tree))))
+        $(ALL_MODULES.$(m).INSTALLED) which is not in the vendor, odm or vendor_dlkm tree))))
 
 endif
 

help.sh

@@ -43,7 +43,9 @@ Common goals are:
     senod                   Quickly rebuild the system_ext image from built packages
                             Stands for "SystemExt, NO Dependencies"
     onod                    Quickly rebuild the odm image from built packages
-                            Stands for "ODM, NO Dependencies"
+                            Stands for "Odm, NO Dependencies"
+    vdnod                   Quickly rebuild the vendor_dlkm image from built packages
+                            Stands for "VendorDlkm, NO Dependencies"
 
 
 So, for example, you could run:

target/product/mainline_system_arm64.mk

@@ -26,6 +26,7 @@ PRODUCT_ENFORCE_ARTIFACT_PATH_REQUIREMENTS := true
 
 PRODUCT_BUILD_CACHE_IMAGE := false
 PRODUCT_BUILD_ODM_IMAGE := false
+PRODUCT_BUILD_VENDOR_DLKM_IMAGE := false
 PRODUCT_BUILD_PRODUCT_IMAGE  := false
 PRODUCT_BUILD_RAMDISK_IMAGE := false
 PRODUCT_BUILD_SYSTEM_IMAGE := true

target/product/mainline_system_x86.mk

@@ -25,6 +25,7 @@ PRODUCT_ENFORCE_ARTIFACT_PATH_REQUIREMENTS := true
 
 PRODUCT_BUILD_CACHE_IMAGE := false
 PRODUCT_BUILD_ODM_IMAGE := false
+PRODUCT_BUILD_VENDOR_DLKM_IMAGE := false
 PRODUCT_BUILD_PRODUCT_IMAGE  := false
 PRODUCT_BUILD_RAMDISK_IMAGE := false
 PRODUCT_BUILD_SYSTEM_IMAGE := true

target/product/mainline_system_x86_64.mk

@@ -26,6 +26,7 @@ PRODUCT_ENFORCE_ARTIFACT_PATH_REQUIREMENTS := true
 
 PRODUCT_BUILD_CACHE_IMAGE := false
 PRODUCT_BUILD_ODM_IMAGE := false
+PRODUCT_BUILD_VENDOR_DLKM_IMAGE := false
 PRODUCT_BUILD_PRODUCT_IMAGE  := false
 PRODUCT_BUILD_RAMDISK_IMAGE := false
 PRODUCT_BUILD_SYSTEM_IMAGE := true

target/product/mainline_system_x86_arm.mk

@@ -25,6 +25,7 @@ PRODUCT_ENFORCE_ARTIFACT_PATH_REQUIREMENTS := true
 
 PRODUCT_BUILD_CACHE_IMAGE := false
 PRODUCT_BUILD_ODM_IMAGE := false
+PRODUCT_BUILD_VENDOR_DLKM_IMAGE := false
 PRODUCT_BUILD_PRODUCT_IMAGE  := false
 PRODUCT_BUILD_RAMDISK_IMAGE := false
 PRODUCT_BUILD_SYSTEM_IMAGE := true

tools/fs_config/Android.mk

@@ -27,11 +27,12 @@ endif
 system_android_filesystem_config := system/core/include/private/android_filesystem_config.h
 system_capability_header := bionic/libc/kernel/uapi/linux/capability.h
 
-# List of supported vendor, oem, odm, product and system_ext Partitions
+# List of supported vendor, oem, odm, vendor_dlkm, product and system_ext Partitions
 fs_config_generate_extra_partition_list := $(strip \
   $(if $(BOARD_USES_VENDORIMAGE)$(BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE),vendor) \
   $(if $(BOARD_USES_OEMIMAGE)$(BOARD_OEMIMAGE_FILE_SYSTEM_TYPE),oem) \
   $(if $(BOARD_USES_ODMIMAGE)$(BOARD_ODMIMAGE_FILE_SYSTEM_TYPE),odm) \
+  $(if $(BOARD_USES_VENDOR_DLKMIMAGE)$(BOARD_VENDOR_DLKMIMAGE_FILE_SYSTEM_TYPE),vendor_dlkm) \
   $(if $(BOARD_PRODUCTIMAGE_FILE_SYSTEM_TYPE),product) \
   $(if $(BOARD_SYSTEM_EXTIMAGE_FILE_SYSTEM_TYPE),system_ext) \
 )
@@ -282,6 +283,57 @@ $(LOCAL_BUILT_MODULE): $(LOCAL_PATH)/fs_config_generator.py $(TARGET_FS_CONFIG_G
 
 endif
 
+ifneq ($(filter vendor_dlkm,$(fs_config_generate_extra_partition_list)),)
+##################################
+# Generate the vendor_dlkm/etc/fs_config_dirs binary file for the target
+# Add fs_config_dirs or fs_config_dirs_vendor_dlkm to PRODUCT_PACKAGES in
+# the device make file to enable
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := fs_config_dirs_vendor_dlkm
+LOCAL_MODULE_CLASS := ETC
+LOCAL_INSTALLED_MODULE_STEM := fs_config_dirs
+LOCAL_MODULE_PATH := $(TARGET_OUT_VENDOR_DLKM)/etc
+include $(BUILD_SYSTEM)/base_rules.mk
+$(LOCAL_BUILT_MODULE): PRIVATE_ANDROID_FS_HDR := $(system_android_filesystem_config)
+$(LOCAL_BUILT_MODULE): PRIVATE_ANDROID_CAP_HDR := $(system_capability_header)
+$(LOCAL_BUILT_MODULE): PRIVATE_TARGET_FS_CONFIG_GEN := $(TARGET_FS_CONFIG_GEN)
+$(LOCAL_BUILT_MODULE): $(LOCAL_PATH)/fs_config_generator.py $(TARGET_FS_CONFIG_GEN) $(system_android_filesystem_config) $(system_capability_header)
+	@mkdir -p $(dir $@)
+	$< fsconfig \
+	   --aid-header $(PRIVATE_ANDROID_FS_HDR) \
+	   --capability-header $(PRIVATE_ANDROID_CAP_HDR) \
+	   --partition vendor_dlkm \
+	   --dirs \
+	   --out_file $@ \
+	   $(or $(PRIVATE_TARGET_FS_CONFIG_GEN),/dev/null)
+
+##################################
+# Generate the vendor_dlkm/etc/fs_config_files binary file for the target
+# Add fs_config_files of fs_config_files_vendor_dlkm to PRODUCT_PACKAGES in
+# the device make file to enable
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := fs_config_files_vendor_dlkm
+LOCAL_MODULE_CLASS := ETC
+LOCAL_INSTALLED_MODULE_STEM := fs_config_files
+LOCAL_MODULE_PATH := $(TARGET_OUT_VENDOR_DLKM)/etc
+include $(BUILD_SYSTEM)/base_rules.mk
+$(LOCAL_BUILT_MODULE): PRIVATE_ANDROID_FS_HDR := $(system_android_filesystem_config)
+$(LOCAL_BUILT_MODULE): PRIVATE_ANDROID_CAP_HDR := $(system_capability_header)
+$(LOCAL_BUILT_MODULE): PRIVATE_TARGET_FS_CONFIG_GEN := $(TARGET_FS_CONFIG_GEN)
+$(LOCAL_BUILT_MODULE): $(LOCAL_PATH)/fs_config_generator.py $(TARGET_FS_CONFIG_GEN) $(system_android_filesystem_config) $(system_capability_header)
+	@mkdir -p $(dir $@)
+	$< fsconfig \
+	   --aid-header $(PRIVATE_ANDROID_FS_HDR) \
+	   --capability-header $(PRIVATE_ANDROID_CAP_HDR) \
+	   --partition vendor_dlkm \
+	   --files \
+	   --out_file $@ \
+	   $(or $(PRIVATE_TARGET_FS_CONFIG_GEN),/dev/null)
+
+endif
+
 ifneq ($(filter product,$(fs_config_generate_extra_partition_list)),)
 ##################################
 # Generate the product/etc/fs_config_dirs binary file for the target

tools/releasetools/add_img_to_target_files.py

@@ -281,6 +281,22 @@ def AddOdm(output_zip):
   return img.name
 
 
+def AddVendorDlkm(output_zip):
+  """Turn the contents of VENDOR_DLKM into an vendor_dlkm image and store it in output_zip."""
+
+  img = OutputFile(output_zip, OPTIONS.input_tmp, "IMAGES", "vendor_dlkm.img")
+  if os.path.exists(img.name):
+    logger.info("vendor_dlkm.img already exists; no need to rebuild...")
+    return img.name
+
+  block_list = OutputFile(
+      output_zip, OPTIONS.input_tmp, "IMAGES", "vendor_dlkm.map")
+  CreateImage(
+      OPTIONS.input_tmp, OPTIONS.info_dict, "vendor_dlkm", img,
+      block_list=block_list)
+  return img.name
+
+
 def AddDtbo(output_zip):
   """Adds the DTBO image.
 
@@ -736,7 +752,7 @@ def AddImagesToTargetFiles(filename):
   has_boot = OPTIONS.info_dict.get("no_boot") != "true"
   has_vendor_boot = OPTIONS.info_dict.get("vendor_boot") == "true"
 
-  # {vendor,odm,product,system_ext}.img are unlike system.img or
+  # {vendor,odm,product,system_ext,vendor_dlkm}.img are unlike system.img or
   # system_other.img. Because it could be built from source, or dropped into
   # target_files.zip as a prebuilt blob. We consider either of them as
   # {vendor,product,system_ext}.img being available, which could be
@@ -749,6 +765,13 @@ def AddImagesToTargetFiles(filename):
               OPTIONS.info_dict.get("building_odm_image") == "true") or
              os.path.exists(
                  os.path.join(OPTIONS.input_tmp, "IMAGES", "odm.img")))
+  has_vendor_dlkm = ((os.path.isdir(os.path.join(OPTIONS.input_tmp,
+                                                 "VENDOR_DLKM")) and
+                      OPTIONS.info_dict.get("building_vendor_dlkm_image")
+                      == "true") or
+                     os.path.exists(
+                         os.path.join(OPTIONS.input_tmp, "IMAGES",
+                                      "vendor_dlkm.img")))
   has_product = ((os.path.isdir(os.path.join(OPTIONS.input_tmp, "PRODUCT")) and
                   OPTIONS.info_dict.get("building_product_image") == "true") or
                  os.path.exists(
@@ -874,6 +897,10 @@ def AddImagesToTargetFiles(filename):
     banner("odm")
     partitions['odm'] = AddOdm(output_zip)
 
+  if has_vendor_dlkm:
+    banner("vendor_dlkm")
+    partitions['vendor_dlkm'] = AddVendorDlkm(output_zip)
+
   if has_system_other:
     banner("system_other")
     AddSystemOther(output_zip)

tools/releasetools/build_image.py

@@ -708,6 +708,29 @@ def ImagePropFromGlobalDict(glob_dict, mount_point):
       d["extfs_rsv_pct"] = "0"
     copy_prop("odm_reserved_size", "partition_reserved_size")
     copy_prop("odm_selinux_fc", "selinux_fc")
+  elif mount_point == "vendor_dlkm":
+    copy_prop("avb_vendor_dlkm_hashtree_enable", "avb_hashtree_enable")
+    copy_prop("avb_vendor_dlkm_add_hashtree_footer_args",
+              "avb_add_hashtree_footer_args")
+    copy_prop("avb_vendor_dlkm_key_path", "avb_key_path")
+    copy_prop("avb_vendor_dlkm_algorithm", "avb_algorithm")
+    copy_prop("avb_vendor_dlkm_salt", "avb_salt")
+    copy_prop("vendor_dlkm_fs_type", "fs_type")
+    copy_prop("vendor_dlkm_size", "partition_size")
+    if not copy_prop("vendor_dlkm_journal_size", "journal_size"):
+      d["journal_size"] = "0"
+    copy_prop("vendor_dlkm_verity_block_device", "verity_block_device")
+    copy_prop("ext4_share_dup_blocks", "ext4_share_dup_blocks")
+    copy_prop("vendor_dlkm_squashfs_compressor", "squashfs_compressor")
+    copy_prop("vendor_dlkm_squashfs_compressor_opt", "squashfs_compressor_opt")
+    copy_prop("vendor_dlkm_squashfs_block_size", "squashfs_block_size")
+    copy_prop("vendor_dlkm_squashfs_disable_4k_align", "squashfs_disable_4k_align")
+    copy_prop("vendor_dlkm_base_fs_file", "base_fs_file")
+    copy_prop("vendor_dlkm_extfs_inode_count", "extfs_inode_count")
+    if not copy_prop("vendor_dlkm_extfs_rsv_pct", "extfs_rsv_pct"):
+      d["extfs_rsv_pct"] = "0"
+    copy_prop("vendor_dlkm_reserved_size", "partition_reserved_size")
+    copy_prop("vendor_dlkm_selinux_fc", "selinux_fc")
   elif mount_point == "oem":
     copy_prop("fs_type", "fs_type")
     copy_prop("oem_size", "partition_size")
@@ -752,6 +775,8 @@ def GlobalDictFromImageProp(image_prop, mount_point):
     copy_prop("partition_size", "vendor_size")
   elif mount_point == "odm":
     copy_prop("partition_size", "odm_size")
+  elif mount_point == "vendor_dlkm":
+    copy_prop("partition_size", "vendor_dlkm_size")
   elif mount_point == "product":
     copy_prop("partition_size", "product_size")
   elif mount_point == "system_ext":
@@ -791,6 +816,8 @@ def main(argv):
       mount_point = "vendor"
     elif image_filename == "odm.img":
       mount_point = "odm"
+    elif image_filename == "vendor_dlkm.img":
+      mount_point = "vendor_dlkm"
     elif image_filename == "oem.img":
       mount_point = "oem"
     elif image_filename == "product.img":

tools/releasetools/check_target_files_vintf.py

@@ -46,6 +46,7 @@ DIR_SEARCH_PATHS = {
     '/product': ('PRODUCT', 'SYSTEM/product'),
     '/odm': ('ODM', 'VENDOR/odm', 'SYSTEM/vendor/odm'),
     '/system_ext': ('SYSTEM_EXT', 'SYSTEM/system_ext'),
+    # vendor_dlkm does not have VINTF files.
 }
 
 UNZIP_PATTERN = ['META/*', '*/build.prop']

tools/releasetools/common.py

@@ -110,13 +110,20 @@ SPECIAL_CERT_STRINGS = ("PRESIGNED", "EXTERNAL")
 # that system_other is not in the list because we don't want to include its
 # descriptor into vbmeta.img.
 AVB_PARTITIONS = ('boot', 'dtbo', 'odm', 'product', 'recovery', 'system',
-                  'system_ext', 'vendor', 'vendor_boot')
+                  'system_ext', 'vendor', 'vendor_boot', 'vendor_dlkm')
 
 # Chained VBMeta partitions.
 AVB_VBMETA_PARTITIONS = ('vbmeta_system', 'vbmeta_vendor')
 
 # Partitions that should have their care_map added to META/care_map.pb
-PARTITIONS_WITH_CARE_MAP = ('system', 'vendor', 'product', 'system_ext', 'odm')
+PARTITIONS_WITH_CARE_MAP = (
+    'system',
+    'vendor',
+    'product',
+    'system_ext',
+    'odm',
+    'vendor_dlkm',
+)
 
 
 class ErrorCode(object):
@@ -655,7 +662,8 @@ def LoadInfoDict(input_file, repacking=False):
         input_file, "META", "root_filesystem_config.txt")
 
     # Redirect {partition}_base_fs_file for each of the named partitions.
-    for part_name in ["system", "vendor", "system_ext", "product", "odm"]:
+    for part_name in ["system", "vendor", "system_ext", "product", "odm",
+                      "vendor_dlkm"]:
       key_name = part_name + "_base_fs_file"
       if key_name not in d:
         continue

tools/releasetools/merge_target_files.py

@@ -197,6 +197,7 @@ DEFAULT_VENDOR_ITEM_LIST = (
     'PREBUILT_IMAGES/*',
     'RADIO/*',
     'VENDOR/*',
+    'VENDOR_DLKM/*',
 )
 
 # VENDOR_EXTRACT_SPECIAL_ITEM_LIST is a list of items to extract from the
@@ -223,6 +224,7 @@ SINGLE_BUILD_PARTITIONS = (
     'SYSTEM/',
     'SYSTEM_OTHER/',
     'VENDOR/',
+    'VENDOR_DLKM/',
 )
 
 

tools/releasetools/ota_from_target_files.py

@@ -277,7 +277,8 @@ AB_PARTITIONS = 'META/ab_partitions.txt'
 UNZIP_PATTERN = ['IMAGES/*', 'META/*', 'OTA/*', 'RADIO/*']
 # Files to be unzipped for target diffing purpose.
 TARGET_DIFFING_UNZIP_PATTERN = ['BOOT', 'RECOVERY', 'SYSTEM/*', 'VENDOR/*',
-                                'PRODUCT/*', 'SYSTEM_EXT/*', 'ODM/*']
+                                'PRODUCT/*', 'SYSTEM_EXT/*', 'ODM/*',
+                                'VENDOR_DLKM/*']
 RETROFIT_DAP_UNZIP_PATTERN = ['OTA/super_*.img', AB_PARTITIONS]
 
 # Images to be excluded from secondary payload. We essentially only keep
@@ -285,7 +286,7 @@ RETROFIT_DAP_UNZIP_PATTERN = ['OTA/super_*.img', AB_PARTITIONS]
 SECONDARY_PAYLOAD_SKIPPED_IMAGES = [
     'boot', 'dtbo', 'modem', 'odm', 'product', 'radio', 'recovery',
     'system_ext', 'vbmeta', 'vbmeta_system', 'vbmeta_vendor', 'vendor',
-    'vendor_boot']
+    'vendor_boot', 'vendor_dlkm']
 
 
 class PayloadSigner(object):
@@ -668,7 +669,8 @@ def GetBlockDifferences(target_zip, source_zip, target_info, source_info,
     assert blockimgdiff_version >= 3
 
   block_diff_dict = collections.OrderedDict()
-  partition_names = ["system", "vendor", "product", "odm", "system_ext"]
+  partition_names = ["system", "vendor", "product", "odm", "system_ext",
+                     "vendor_dlkm"]
   for partition in partition_names:
     if not HasPartition(target_zip, partition):
       continue