Merge changes from topic "resizable_ota"

# bootloader fastboot should always mark _a slot as bootable.

ifeq ($(AB_OTA_UPDATER),true)

$(INSTALLED_SUPERIMAGE_TARGET) $(INSTALLED_SUPERIMAGE_EMPTY_TARGET): PRIVATE_PARTITION_SUFFIX=_a

$(INSTALLED_SUPERIMAGE_TARGET) $(INSTALLED_SUPERIMAGE_EMPTY_TARGET): PRIVATE_METADATA_SLOTS=2

else

$(INSTALLED_SUPERIMAGE_TARGET) $(INSTALLED_SUPERIMAGE_EMPTY_TARGET): PRIVATE_METADATA_SLOTS=1

endif # AB_OTA_UPDATER

$(INSTALLED_SUPERIMAGE_TARGET): $(HOST_OUT_EXECUTABLES)/lpmake

	$< \

		--sparse \

$(INSTALLED_SUPERIMAGE_TARGET) $(INSTALLED_SUPERIMAGE_EMPTY_TARGET): $(HOST_OUT_EXECUTABLES)/lpmake

# $(1): output image path

# $(2): slot A suffix (_a or empty)

# $(3): include images or not (true or empty)

define build-superimage-target

  $(HOST_OUT_EXECUTABLES)/lpmake \

    $(if $(3), --sparse) \

    --metadata-size 65536 \

		--metadata-slots $(PRIVATE_METADATA_SLOTS) \

    --metadata-slots $(if $(2),2,1) \

    --device-size $(BOARD_SUPER_PARTITION_SIZE) \

		--output $@ \

    --output $(1) \

    $(foreach name,$(BOARD_SUPER_PARTITION_PARTITION_LIST), \

			--partition $(name)$(PRIVATE_PARTITION_SUFFIX):$$($(UUIDGEN) $(name)$(PRIVATE_PARTITION_SUFFIX)):readonly:$(call read-size-of-partitions,$(name)) \

			--image $(name)$(PRIVATE_PARTITION_SUFFIX)=$(call images-for-partitions,$(name)))

      --partition $(name)$(2):$$($(UUIDGEN) $(name)$(2)):readonly:$(if $(3),$(call read-size-of-partitions,$(name)),0) \

      $(if $(3), --image $(name)$(2)=$(call images-for-partitions,$(name))) \

      $(if $(2), --partition $(name)_b:$$($(UUIDGEN) $(name)_b):readonly:0) \

    )

endef

$(INSTALLED_SUPERIMAGE_TARGET):

	$(call pretty,"Target super fs image: $@")

	$(call build-superimage-target,$@,$(PRIVATE_PARTITION_SUFFIX),true)

$(call dist-for-goals,dist_files,$(INSTALLED_SUPERIMAGE_TARGET))

$(INSTALLED_SUPERIMAGE_EMPTY_TARGET): $(HOST_OUT_EXECUTABLES)/lpmake

	$< \

		--metadata-size 65536 \

		--metadata-slots $(PRIVATE_METADATA_SLOTS) \

		--device-size $(BOARD_SUPER_PARTITION_SIZE) \

		--output $@ \

		$(foreach name,$(BOARD_SUPER_PARTITION_PARTITION_LIST), \

			--partition $(name)$(PRIVATE_PARTITION_SUFFIX):$$($(UUIDGEN) $(name)$(PRIVATE_SUPER_PARTITION_SUFFIX)):readonly:0)

$(INSTALLED_SUPERIMAGE_EMPTY_TARGET):

	$(call pretty,"Target empty super fs image: $@")

	$(call build-superimage-target,$@,$(PRIVATE_PARTITION_SUFFIX))

$(call dist-for-goals,dist_files,$(INSTALLED_SUPERIMAGE_EMPTY_TARGET))