Dev toolchain

[Nilocsemliw]

Not sure if this is helpful (I am not a developer) but here is the link that was given on a similar question a moderator Tllim answered with a link to a bootlog (doesn't seem very helpful to me) https://gist.github.com/apritzel/c92b38b069a645094bf8
It was described as a "Kernel 4.4 boot log that successfully bring up by Sunxi team"
I would also check the pine64 wiki which looks more promising
http://wiki.pine64.org/index.php/Main_Page