def make_vbmeta_image(self, output, chain_partitions, algorithm_name,
key_path, public_key_metadata_path, rollback_index,
flags, props, props_from_file, kernel_cmdlines,
setup_rootfs_from_kernel,
include_descriptors_from_image,
signing_helper,
signing_helper_with_files,
release_string,
append_to_release_string,
print_required_libavb_version,
padding_size):
print 'chain_partitions.{}'.format(chain_partitions)
print 'key_path.{}'.format(key_path)
print 'include_descriptors_from_image.{}'.format(include_descriptors_from_image)
./external/avb/avbtool make_vbmeta_image
--key external/avb/test/data/testkey_rsa4096.pem --algorithm SHA256_RSA4096
--include_descriptors_from_image out/images/android_10/device/vbmeta_system.img
--include_descriptors_from_image out/images/android_10/device/vbmeta_system.img
--chain_partition vbmeta_system:2:external/avb/rsa4096_test.avbpubkey
--chain_partition vbmeta_system:2:external/avb/rsa4096_test.avbpubkey
--padding_size 4096 --output vbmeta_test.img
将会打印make_vbmeta_image cmd的这些参数