Problems mounting NFS as root file system

Hi,

I'm working on a embedded device (board Ronetix pm9261, core AT91SAM9261) i was able to build the linux kernel with NFS support and i built Busybox in a root file system wich i want to mount via NFS.

The boot arguments are:
root=/dev/nfs rw rootfstype=nfs nfsroot=192.168.0.90:/tftpboot/192.168.0.99 ip=192.168.0.99::192.168.0.2:255.255.255.0:pm9261:eth0:off init=/sbin/init console=ttyS0,115200 debug

The file system mounts OK, but when the boot log shows 'Freeing init
memory: 112k' it freezes, i think it is a problem when running the init program.
I discarded linking problems with the init program (it's static), the same program runs ok from he NAND flash file system.
I don't know what to do, i search evrey tutorials and i do the same as they.

Any ideas? suggestions?

Regards,
Diego A. Fons.

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