040000 tree 4857d0c6153aa37b8f80d015dc953b88e419039a	boot_serial
040000 tree 9308a6718607d43823e443fb7730a3770fd8a1b1	bootutil
040000 tree 0995ea5139b757376739a405e8aa85a5ea571581	coverity
040000 tree 7a846272730be223069088c2d94a15538528dc09	mynewt
040000 tree aac08673571313763b66535bf820478bc76d3fcc	zephyr