This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Port LCD's driver from DVSDK1.3 to DVSDK2.0, Can't got DHCP answer

We migrated from MVL v4 to MVL v5, and from dvsdk 1_30_00_41 to 2_00_00_18 ,after configured the new kernel and boot, but   can't got DHCP

Sending DHCP requests .., OK
IP-Config: Got DHCP answer from 0.0.0.0, my address is 192.168.0.232
IP-Config: Complete:
      device=eth0, addr=192.168.0.232, mask=255.255.255.0, gw=192.168.0.1,
     host=192.168.0.232, domain=, nis-domain=(none),
     bootserver=0.0.0.0, rootserver=192.168.0.98, rootpath=
Looking up port of RPC 100003/2 on 192.168.0.98
Looking up port of RPC 100005/1 on 192.168.0.98
Root-NFS: Unable to get mountd port number from server, using default
mount: server 192.168.0.98 not responding, timed out
Root-NFS: Server returned error -5 while mounting /home/beishan/nfs_2_0
VFS: Unable to mount root fs via NFS, trying floppy.
VFS: Cannot open root device "nfs" or unknown-block(2,0)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)

so what's the reason ?