N2100 kernel building

[Frank Kingswood <frank@kingswood-consulting.co.uk>]

Hallo!

I am interested in doing some hacking on the N2100 kernel but worried to 
leave my system unable to boot. At the moment my box runs with the 
2.6.18-4-iop32x kernel.

Can anyone point me at
1) any ARM patches that are not yet in mainline
2) a kernel build procedure that will generate a kernel and initrd (but 
does NOT flash these - I'll be using tftp)

Alternatively, is there any kernel worth having in the /testing/ 
distribution?

Thanks,
Frank Kingswood