I've downloaded hackndev modified linux kernel. It's a heavily modified kernel, with support for a lot of ARM PDAs. After reading TE2 mailing lists and some fixups I was able to compile a Tungsten E2 specific kernel. I couldn't boot it, however, the screen just faded after booting and nothing else. I tried two different kernel revisions and two different "config" files, with no success. The kernel image that is correctly booting in my Palm is from April 2006. I'll continue my research to a proper kernel in hackndev svn around this date.