Hmm. Unless I'm misreading or misunderstanding things, I think both the TomTom and the n800 are little-endian.

Linux TomTom 2.6.13-tt1619 #1 Tue Apr 17 08:21:15 CEST 2007 armv4tl unknown

Linux Nokia-N800-10 2.6.18-omap1 #2 Wed Mar 7 15:36:09 EET 2007 armv6l unknown

A quick google found someone else's Zaurus reporting:

Linux zaurus 2.4.6-rmk1-np2-embedix #1 Tue Jul 30 08:38:25 PDT 2002 armv4l unknown

Am I wrong?