Hello there.
I am also trying to boot Linux on a Cyclone II 2C20 board (DE1) and I am also going to start at the same place, i.e. 'Linux for the nios II processor' on the altera wiki.
I am planning to first understand the design (a reference design for the EP3C120 device can be downloaded from the page titled 'Creating_a_Nios_II_Design_with_an_MMU' at the wiki.
Once upon a time, I was involved with hardware design, but its been a long time since Ive moved to (due to what they say circumstance) system software development (which means I'm as new as the next person out there :D). So if we could collaborate and perhaps if some seniors here could lend us a helping hand, we can make it. I plan to write a blog so that more and more system software developers find it interesting to take a shot at this.
Thanks and Regards,
Aijaz Baig.