Help needed with kernel parameters to mount NFS root file system

Hi

I am doing my first embedded Linux project on a Freescale p4080DS board. I am using U-Boot and OpenEmbedded Linux. I want to configure U-Boot to boot the kernel from Flash and to make the kernel mount a remote nfs root file system. With my current settings, the kernel displays the following command line settings at boot time:

Kernel command line: console=ttyS0,115200 root=/dev/nfs rw ip=172.29.68.13:172.29.68.252:192.168.1.20:255.255.255.04080ds:eth0ff nfsroot=172.29.68.252:/<mypath>/rootfs/devel-image

where <mypath> hides my actual path for the sake of this post.

but the boot hangs after:

RAMDISK: gzip image found at block 0
VFS: Mounted root (ext2 filesystem) on device 1:0.
VFS: Mounted root (nfs filesystem) on device 0:15.
Trying to move old root to /initrd ... /initrd does not exist. Ignored.
Unmounting old root
Trying to free ramdisk memory ... okay
Freeing unused kernel memory: 268k freed

Can anyone see anything wrong with my kernel command line please?

Best regards

David

Don't see anything wrong with your kernel config line as long as your Root filesystem lives under
/<mypath>/rootfs/devel-image.

I currently do something similar with a P4080 board. Unfortunately the printout you posted doesn't show it attempting to mount the root filesystem over NFS. I'm not sure if that occurred before the
RAMDISK: gzip image found at block 0 output.

I assume you have.

ROOT_NFS = yes
Depends on: NETWORK_FILESYSTEMS [=y] && NFS_FS [=y]=y [=y] && IP_PNP [=y]

I remember using Freescales DPAA and it being off by default.

I'm confused to why it shows it mounted 2 root: one ext2 root in some (block) device and one in nfs.
It seems it's expecting initrd in one rootfs, but it's missing.