Due to a combination of misconfiguration and a buggy bootprom/kernel interface, I just spent several days digging around in the 2.6.18.8 kernel bring-up code, looking for why my nominated RFS device was being ignored.
On the journey I noticed several things that may be worthy of comment (or on the other hand, maybe all of the following is well-trodden territory for the guys on here - judge for yourselves).
There is a macro __setup() which is used to link bootargs to...