怎样通过NFS启动ARM下的Linux内核

我使用的是ARM9——S3C2410的开发板，VIVI和内核已经下载成功，现在使用NFS启动内核不成功。下面是出错最后出现不能启动内核的提示信息。

我自己回家弄了好几天了，就是一直弄不出来，向大家请教一下，给我一个思路，现在没有一点头绪。呵呵

IP-Config: Complete:

device=eth0, addr=192.168.1.100, mask=255.255.255.0, gw=192.168.1.17,

host=www, domain=, nis-domain=realembed.com,

bootserver=192.168.1.17, rootserver=192.168.1.17, rootpath=

NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.

NetWinder Floating Point Emulator V0.95 (c) 1998-1999 Rebel.com

Looking up port of RPC 100003/2 on 192.168.1.17

portmap: server 192.168.1.17 not responding, timed out

Root-NFS: Unable to get nfsd port number from server, using default

Looking up port of RPC 100005/1 on 192.168.1.17

portmap: server 192.168.1.17 not responding, timed out

Root-NFS: Unable to get mountd port number from server, using default

mount: server 192.168.1.17 not responding, timed out

Root-NFS: Server returned error -5 while mounting /root_nfs

VFS: Unable to mount root fs via NFS, trying floppy.

request_module[block-major-2]: Root fs not mounted

VFS: Cannot open root device "nfs" or 02:00

Please append a correct "root=" boot option

Kernel panic: VFS: Unable to mount root fs on 02:00