look at
http://www.tldp.org/HOWTO/User-Group-HOWTO-1.html
http://www.uclinux.org/ports/
http://perso.wanadoo.es/xose/linux/linux_ports.html

PLATFORM	URL	NetBSD	URL	Linux	URL
apollo68k		no
ARMv2	yes	http://www.netbsd.org/Ports/acorn26/
ARMv2a	yes	http://www.netbsd.org/Ports/acorn26/
Acorn Archimedes A-series	yes	http://www.netbsd.org/Ports/acorn26/
Acorn Archimedes R-series	yes	http://www.netbsd.org/Ports/acorn26/
mmeye
Sharks
Palm Pilot
Cisco 2500	?	?	?	?	http://www.uclinux.org/ports/
Cisco 3000	?	?	?	?	http://www.uclinux.org/ports/
Cisco 4000	?	?	?	?	http://www.uclinux.org/ports/
Motorola DragonBall (M68EZ328,M68328,M68EN322)	http://e-www.motorola.com/webapp/sps/site/prod_summary.jsp?code=MC68360&node	?	?	?	http://www.uclinux.org/ports/
Motorola ColdFire	http://www.motorola.com/COLDFIRE	?	?	?	http://www.uclinux.org/ports/coldfire/
Motorola mc68360 QUICC	?	?	?	?	http://www.uclinux.org/ports/mc68360/