Hi Vagrant, could you send a patch adding puma-rk3399 to buildroot? I'm thinking of using buildroot for the u-boot installation in GuixSD instead of our DIY installers (in the long term). Puma-rk3399 is one of the few u-boots that isn't in buildroot yet. I've attached an example patch adding Bananapi M2 Ultra. In order to build this example: $ git clone git://git.buildroot.net/buildroot $ cd buildroot $ patch -p1 < .../0001-Added-support-for-Sinovoip-BananaPi-M2-Ultra-board.patch $ make bananapi_m2_ultra_defconfig $ make # takes extremely long and takes lots of space I'm planning to copy genimage.cfg from buildroot - not everything. That would enable us to have a generic install-u-boot. Buildroot: https://buildroot.org/ Git web: https://git.busybox.net/buildroot/ Git: git clone git://git.buildroot.net/buildroot Git: git clone https://git.buildroot.net/buildroot Patches: http://lists.buildroot.org/mailman/listinfo/buildroot