[BUG] IBM440GX works too slow under nfsroot

[Hiroshi DOYU]

Hi all,

Now I am strugging with booting vanilla(2.4.2x) on ibm440gx and
I could succeed to boot it but, after nfs mounted, it's behavior 
seems too slow. I guess, it looks like the system is running 
half duplex. I have attached  the boot message below.

If anyone knows some information about such issue, please let me know.

Thanks,
-doyu

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Generic RTC Driver v1.07                                                                               
emac: IBM OCP EMAC Ethernet driver, version 2.0                                                        
Maintained by Benjamin Herrenschmidt <benh at kernel.crashing.org>                                        
mal0: Initialized, 4 tx channels, 2 rx channels                                                        
zmii0: bridge in SMII mode                                                                             
eth0: IBM emac, MAC 00:04:ac:e3:2a:f5                                                                  
eth0: Found Generic MII PHY (0x01)                                                                     
eth1: IBM emac, MAC 00:04:ac:e3:2a:f7                                                                  
eth1: Found Generic MII PHY (0x02)                                                                     
NET4: Linux TCP/IP 1.0 for NET4.0                                                                      
IP Protocols: ICMP, UDP, TCP, IGMP                                                                     
IP: routing cache hash table of 2048 buckets, 16Kbytes                                                 
TCP: Hash tables configured (established 16384 bind 32768)                                             
Sending BOOTP requests .<6>eth0: Link is Up                                                            
eth0: Speed: 10, Half duplex.                                                                          
. OK                                                                                                   
IP-Config: Got BOOTP answer from 192.168.1.10, my address is 192.168.1.2                               
IP-Config: Complete:                                                                                   
      device=eth0, addr=192.168.1.2, mask=255.255.255.0, gw=192.168.1.10,                              
     host=ibm440gx, domain=, nis-domain=(none),                                                        
     bootserver=192.168.1.10, rootserver=192.168.1.10, rootpath=/opt/montavista/pro/devkit/ppc/440/tart
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.                                                    
Looking up port of RPC 100003/2 on 192.168.1.10                                                        
Looking up port of RPC 100005/1 on 192.168.1.10                                                        
VFS: Mounted root (nfs filesystem).                                                                    
Mounted devfs on /dev                                                                                  
Freeing unused kernel memory: 76k init                                                                 
nfs: server 192.168.1.10 not responding, still trying                                                  
nfs: server 192.168.1.10 not responding, still trying                                                  
nfs: server 192.168.1.10 OK                                                                            
nfs: server 192.168.1.10 OK                                                                            
nfs: server 192.168.1.10 not responding, still trying
nfs: server 192.168.1.10 OK                                         
.....
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