Linux on Amiga

Upgrading Amiga Linux kernel

This is a guide on how to upgrade the kernel for Debian 3.1 for Amiga.

Before upgrading the kernel

• Start up the machine
• install ntpdate (apt-get install ntpdate) as real time clock will be broken after kernel upgrade
• Replace module init tools with newer version: module-init-tools-3.15-m68k.tar.gz
• Extract kernel 4.8.14 modules in /lib/modules/ modules-4.8.14.tar.gz
• Finally launch Linux with new kernel vmlinuz-4.8.14.tar.gz

Known Bugs

• Real Time Clock will not work with new kernel. Use NTP to sync time instead.

Video guide

https://www.youtube.com/playlist?list=PL64Swv1hBtXdFMdVrkMYUEHZq6eKqD0_D

How to build new Amiga kernel yourself

QEMU m68k chroot environment

• Use Ubuntu linux distribution for this (Fedora seems to have problems with qemu-m68k binfmt)
• Install debootstrap: apt-get install debootstrap
• run apt-get install qemu-user-static
• Build qemu-m68k-static binary build from branch qemu-m68k-680x0-v2.7.0 at https://github.com/vivier/qemu-m68k
• Or download from here: qemu-m68k-static.tar.gz
• Run

debootstrap --no-check-gpg --variant=buildd --foreign --arch=m68k unstable sid-m68k-sbuild http://ftp.ports.debian.org/debian-ports/

• Copy the qemu-m68-static into sid-m68k-sbuild/usr/bin
• Set sid-m68k-sbuild/etc/apt/sources.list to

deb http://ftp.ports.debian.org/debian-ports/ sid main

• Chroot into sid-m68k-sbuild
• Run

debootstrap/debootstrap --second-stage

Sources

https://wiki.debian.org/M68k/sbuildQEMU