mountroot problem

[Vesa Akseli Norrman <vnorrman%niksula.hut.fi@localhost>]

Hello,
I have a RAMDISK kernel cross built on i386 and I'm testing Jornada 680.
The problem is mountroot doesn't work. The filesystem is an ffs-type image
and I try using md device. Looking at messages:
mountroot: trying nfs...
mountroot: trying msdos...
mountroot: trying ffs...
no file system for md0 (dev 0x600)
cannot mount root, error = 79
Trying to debug the problem... looks like it is testing for a magic
number of the ffs but it finds a zero instead???
I tried sh3.newpmap.patch too, but it didn't help me.
regards, Vesa