Hi. On Thu, Jul 25, 2019 at 12:49:32PM -0400, Gene Heskett wrote: > I am furious (fat lot of good that does me) with the lack of tools, and > information on how to use them to build an installable kernel.deb for a > rpi-3b. I know it can be done, I have witnessed apt do it several > times, on at least two of the arm platforms, once on an arm64 running > stretch and several times on armhf for releases from jessie to buster.
Raspberry Pi does not use u-boot. Raspbian does not use u-boot. Their proprietary bootloader can be forced to run u-boot, but its not worth it - by using u-boot you're limiting yourself to armhf, and Raspberry Pi3 is an aarch64 board. > I want to take a linux-rt tar.xz direct from kernel.org, and its patches > to bring it up to realtime, build it and install it all on the pi-3b, > to which I have added a 120GB SSD for workspace, and a 10GB swap so it > can now build linuxcnc. Consider installing a proper Debian first the way it's outlined at [1]. Booting a custom kernel will be as easy as adding an another entry to grub.cfg. Reco [1] https://pete.akeo.ie/2019/07/installing-debian-arm64-on-raspberry-pi.html
