target/board/BoardConfigGsiCommon.mk - platform/build - Git at Google

 # BoardConfigGsiCommon.mk
 #
 # Common compile-time definitions for GSI
 #

 # GSIs always use ext4.
 TARGET_USERIMAGES_USE_EXT4 := true
 # GSIs are historically released in sparse format.
 # Some vendors' bootloaders don't work properly with raw format images. So
 # we explicit specify this need below (even though it's the current default).
 TARGET_USERIMAGES_SPARSE_EXT_DISABLED := false

 # Enable dynamic system image size and reserved 128MB in it.
 # Currently the reserve size includes verified boot metadata.
 # TODO: adjust to a smaller value if the reserved size is only for file system.
 BOARD_SYSTEMIMAGE_PARTITION_RESERVED_SIZE := 134217728

 # Android Verified Boot (AVB):
 #   1) Sets BOARD_AVB_ENABLE to sign the GSI image.
 #   2) Sets AVB_VBMETA_IMAGE_FLAGS_VERIFICATION_DISABLED (--flag 2) in
 #      vbmeta.img to disable AVB verification.
 #
 # To disable AVB for GSI, use the vbmeta.img and the GSI together.
 # To enable AVB for GSI, include the GSI public key into the device-specific
 # vbmeta.img.
 BOARD_AVB_ENABLE := true
 BOARD_AVB_ROLLBACK_INDEX := $(PLATFORM_SECURITY_PATCH_TIMESTAMP)
 BOARD_AVB_MAKE_VBMETA_IMAGE_ARGS += --flag 2

 # Enable chain partition for system.
 BOARD_AVB_SYSTEM_KEY_PATH := external/avb/test/data/testkey_rsa2048.pem
 BOARD_AVB_SYSTEM_ALGORITHM := SHA256_RSA2048
 BOARD_AVB_SYSTEM_ROLLBACK_INDEX := $(PLATFORM_SECURITY_PATCH_TIMESTAMP)
 BOARD_AVB_SYSTEM_ROLLBACK_INDEX_LOCATION := 1

 ifneq (,$(filter userdebug eng,$(TARGET_BUILD_VARIANT)))
 # GSI is always userdebug and needs a couple of properties taking precedence
 # over those set by the vendor.
 TARGET_SYSTEM_PROP := build/make/target/board/gsi_system.prop
 endif
 BOARD_VNDK_VERSION := current

 # system-as-root is mandatory from Android P
 TARGET_NO_RECOVERY := true
 BOARD_BUILD_SYSTEM_ROOT_IMAGE := true

 # 64 bits binder interface is mandatory from Android P
 TARGET_USES_64_BIT_BINDER := true

 # Android generic system image always create metadata partition
 BOARD_USES_METADATA_PARTITION := true

 # Set this to create /cache mount point for non-A/B devices that mounts /cache.
 # The partition size doesn't matter, just to make build pass.
 BOARD_CACHEIMAGE_FILE_SYSTEM_TYPE := ext4
 BOARD_CACHEIMAGE_PARTITION_SIZE := 16777216

 # Audio: must using XML format for Treblized devices
 USE_XML_AUDIO_POLICY_CONF := 1
	# BoardConfigGsiCommon.mk
	#
	# Common compile-time definitions for GSI
	#

	# GSIs always use ext4.
	TARGET_USERIMAGES_USE_EXT4 := true
	# GSIs are historically released in sparse format.
	# Some vendors' bootloaders don't work properly with raw format images. So
	# we explicit specify this need below (even though it's the current default).
	TARGET_USERIMAGES_SPARSE_EXT_DISABLED := false

	# Enable dynamic system image size and reserved 128MB in it.
	# Currently the reserve size includes verified boot metadata.
	# TODO: adjust to a smaller value if the reserved size is only for file system.
	BOARD_SYSTEMIMAGE_PARTITION_RESERVED_SIZE := 134217728

	# Android Verified Boot (AVB):
	# 1) Sets BOARD_AVB_ENABLE to sign the GSI image.
	# 2) Sets AVB_VBMETA_IMAGE_FLAGS_VERIFICATION_DISABLED (--flag 2) in
	# vbmeta.img to disable AVB verification.
	#
	# To disable AVB for GSI, use the vbmeta.img and the GSI together.
	# To enable AVB for GSI, include the GSI public key into the device-specific
	# vbmeta.img.
	BOARD_AVB_ENABLE := true
	BOARD_AVB_ROLLBACK_INDEX := $(PLATFORM_SECURITY_PATCH_TIMESTAMP)
	BOARD_AVB_MAKE_VBMETA_IMAGE_ARGS += --flag 2

	# Enable chain partition for system.
	BOARD_AVB_SYSTEM_KEY_PATH := external/avb/test/data/testkey_rsa2048.pem
	BOARD_AVB_SYSTEM_ALGORITHM := SHA256_RSA2048
	BOARD_AVB_SYSTEM_ROLLBACK_INDEX := $(PLATFORM_SECURITY_PATCH_TIMESTAMP)
	BOARD_AVB_SYSTEM_ROLLBACK_INDEX_LOCATION := 1

	ifneq (,$(filter userdebug eng,$(TARGET_BUILD_VARIANT)))
	# GSI is always userdebug and needs a couple of properties taking precedence
	# over those set by the vendor.
	TARGET_SYSTEM_PROP := build/make/target/board/gsi_system.prop
	endif
	BOARD_VNDK_VERSION := current

	# system-as-root is mandatory from Android P
	TARGET_NO_RECOVERY := true
	BOARD_BUILD_SYSTEM_ROOT_IMAGE := true

	# 64 bits binder interface is mandatory from Android P
	TARGET_USES_64_BIT_BINDER := true

	# Android generic system image always create metadata partition
	BOARD_USES_METADATA_PARTITION := true

	# Set this to create /cache mount point for non-A/B devices that mounts /cache.
	# The partition size doesn't matter, just to make build pass.
	BOARD_CACHEIMAGE_FILE_SYSTEM_TYPE := ext4
	BOARD_CACHEIMAGE_PARTITION_SIZE := 16777216

	# Audio: must using XML format for Treblized devices
	USE_XML_AUDIO_POLICY_CONF := 1