Posts Tagged “linux”

  • Distro Boot with Buildroot on a Beaglebone Black

    a Beaglebone black with attached serial cable in front

    In May 2021 I worked through the Buildroot training by Bootlin on a Beaglebone black. This is not the wireless version the lab description expects, but it worked well nonetheless. I enjoyed this very much, the materials from Bootlin are excellent.

    At the time they used the older uEnv.txt method for booting. Since I'm also playing with an STM32MP157C-DK2, which uses distro boot, I wanted to switch the Beaglebone black over to also use it, to get a more uniform configuration across my devices.

    Distro Boot

    Distro boot adapts the configuration file format of Syslinux to also support device trees. It is available in recent versions of U-Boot, here is a complete description.

    Distro boot is becoming popular for booting embedded Linux systems, because it decouples the boot loader from the Linux system. It is no longer necessary to fiddle with U-Boot environment variables to tell U-Boot where the Linux kernel image, device tree and root file system are.

    The starting point is a configuration file extlinux.conf. More ...

  • Debian Buster on a Thinkpad T14 (Intel)

    I got model 20S0000HGE (Intel Core i5-10210U Comet Lake, Intel Graphics, WWAN card) with memory upgraded to 32GB, disk upgraded to 1TB and a US keyboard. I got it from and was quite satisfied with the service, quick delivery (UPS) and no issues.

    I used Debian Buster (stable) from a netinst image on a USB stick. This time I wiped Microsoft Windows completely, no more dual boot (on my previous machine I never used it after initial installation, so good riddance).

    More ...
  • Debian Stretch on a Thinkpad Yoga 370

    Disabling Secure Boot

    To boot into Debian netinst on a USB stick I had to disable Secure Boot in the BIOS. More ...