Rootfs from NFS

Install nfs-kernel-server and edit /etc/exports to export your rootfs directory.

/indt/omap3430sdp/nfs 0.0.0.0/0.0.0.0(rw,sync,no_root_squash,no_subtree_check)

Kernel from FTP

Install tftpd-hpa and change the /etc/default/tftpd-hpa file to access your kernel image.

#Defaults for tftpd-hpa
RUN_DAEMON="yes"
OPTIONS="-l -s /indt/omap3430sdp/tftpboot"

Board Options

sample:

OMAP34XX SDP # printenv
bootdelay=3
baudrate=115200
ethaddr=08:00:28:01:1C:18
gateway=192.168.1.1
ipaddr=192.168.3.156
netmask=255.255.252.0
bootcmd=tftpboot;bootm;
bootfile=kernel-12.14.uImg
serverip=192.168.1.70
bootargs=console=ttyS0,115200n8 noinitrd rw ip=dhcp root=/dev/nfs nfsroot=192.168.1.70:/indt/omap3430sdp/nfs/current-rootfs
stdin=serial
stdout=serial
stderr=serial

Use setenv for set environment variables.