uClinux for the Mac Plus

requirements

for building, you need Docker, a POSIX compatible shell, and a C toolchain for your host system (used for building the bootloader installer tool)

building things

before building the kernel or userland you'll need to build the Docker build environment. this can be done by running build.sh in the buildenv directory. after that you can run build.sh in the uClinux and user directories to build the kernel and userland respectively

you can run buildfs.sh in the user directory to generate a bootable disk image (64 MB by default, can be changed by changing the SIZE variable in the file). you can change the arguments passed to the kernel by editing user/cmdline, if for example the root partition ends up being on a different drive than the default of /dev/sda1. if buildfs.sh hasn't been run yet this file won't exist, simply copy the file user/cmdline.default to user/cmdline and then edit it as normal

running things

in order to boot from the bootable image generated by user/buildfs.sh, you'll need a Mac Plus, either real or emulated.

if you choose to emulate, you'll need to use an emulator that supports the Mac Plus' SCSI controller, like MAME for example. unfortunately, Mini vMac won't work because it doesn't emulate the Mac's SCSI controller

you can boot the image in MAME by running a command like mame macplus -hard1 $(pwd)/root.img (in the user directory, of course)

what works

• framebuffer
• keyboard
• SCSI controller
• sound

what doesn't

• mouse
• floppy drives
• serial
• a bunch more things, probably