Cannot login via tinylogin on sequoia

[Leonid]

Hi:

I have built u-boot, kernel and filesystem using ELDK 4.1 for AMCC
PPC440EPx sequoia board. When I boot linux using NFS filesystem,
supplied with ELDK itself, I can login (usrr root, no password). However
I couldn't login while used ramdisk, built by myself or taken from AMCC
resource CD. Combinations root/root or root/nothing don't work. 

Sequoia login: root
Password:
Login incorrect

Please press Enter to activate this console. Dec 31 18:00:26 Sequoia
auth.warn login[37]: invalid password for `UNKNOWN' on `ttyS0'
Dec 31 18:00:26 Sequoia daemon.info init: Process '/bin/tinylogin login
-f root' (pid 37) exited.  Scheduling it for restart.

How I can learn what user/password combination are configured and how do
I change them? This is static/etc/passwd from my SIMPLE filesystem:

root::0:0:root:/root:/bin/sh
bin:*:1:1:bin:/bin:
daemon:*:2:2:daemon:/sbin:
halt:*:7:0:halt:/sbin:/sbin/halt
ftp:*:14:50:FTP User:/
nobody:*:99:99:Nobody:/:
target:$1$x4Rc1j78$n5FVlLwarSyMYoZaMlijU1:200:100:Test
User:/home:/bin/sh

Thanks,

Leonid.