~/talk

LinuxBoot: Firmware Tools & a BusyBox in Go

on YouTube 31m
Talkat GopherCon Europe 2019 · 2019-05-30..06-01· [go, embedded-and-hardware]

speaker

name:Chris Koch
links:none on file

resources

video:https://youtu.be/MRqfPmPaNgE
slides:none on file

summary

LinuxBoot replaces proprietary UEFI modules by loading a Linux kernel as an EFI PE and running a tiny initramfs built from pure Go tools via u-root. The project implements a BusyBox in Go that merges 30+ commands into one binary (examples: 2.4 MB for two commands, 17 MB uncompressed -> ~4.7 MB compressed) using source-to-source rewriting and on‑demand compilation, avoids cgo, and builds boot loaders in Go using kexec trampoline assembly; reported boot times drop from minutes to ~20 seconds.

AI-written summary · about

chapters (11)

  1. 0:00Start
  2. 0:26Overview
  3. 1:39UEFI Boot
  4. 2:27UEFI Ecosystem: TL-DR
  5. 7:48u-root, The Universal Root
  6. 8:52Embedded Go
  7. 12:17What's happening?
  8. 17:38Alternative: Dynamic Mode
  9. 20:58Bootloaders in Go
  10. 21:43What is a loader?
  11. 22:57Bootloaders on Linux

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