Re: STMMAC driver: NFS Problem on 2.6.37

Hi All,

On 1/13/2011 11:58 PM, Armando VISCONTI wrote:

Chuck Lever wrote:
  

quoted

On Jan 13, 2011, at 4:09 AM, deepaksi wrote:

  
    

quoted

Hi

I am facing a problem related to nfs boot, while using the stmmac driver
ported on 2.6.37 kernel. When we use a JFFS2 file system and mount the kernel,
the network driver works fine.

I have been following the mailing list and could find some issues with NFS 
on 2.6.37 but I am not too sure whether the kernel crash I am getting is 
related to that.

The driver worked fine on 2.6.32 kernel, but while booting the 2.6.37
kernel I get the following log messages:

stmmac: Rx Checksum Offload Engine supported
       TX Checksum insertion supported
IP-Config: Complete:
    device=eth0, addr=192.168.1.10, mask=255.255.255.0, gw=255.255.255.255,
    host=192.168.1.10, domain=, nis-domain=(none),
    bootserver=192.168.1.1, rootserver=192.168.1.1, rootpath=
    
      

Why is rootpath left undefined?
  
    

Even with dhcp server, we get the same log for rootpath. It never
appears over there.

Yes, Chuck.
Good catch.

Deepak,
Can you possibly verify  your bootargs?

I  see exactly your same problem with kernel 2.6.32 (rc6.3) on my
board, where the bootargs is defined like this:

bootargs=console=ttyAMA0,115200 mem=128M root=/dev/nfs 
ip=192.168.1.10:192.168.1
.1:192.168.1.1:255.255.255.0 nfsroot=192.168.1.1:/home/guest/armv7/target

In fact, rootpath is undefined also in my case...

But if I get the network info from my DHCP server the system is booting 
correctly.
(i.e. console=ttyAMA0,115200 mem=128M root=/dev/nfs ip=dhcp)

So, why do we have rootpath undefined in our bootargs?
I guess we screwed up something someway...

Let's see it tomorrow.

Ciao,
Arm



  

The nfs work fine when you use the dhcp server, but still it is a
totally different proposition. The problem comes when we assign a static
IP in the bootargs, and then try to boot the system using NFS. here is
the bootargs setting at the u-boot.

bootargs = console=ttyAMA0,115200 mem=128M root=/dev/nfs
nfsroot=192.168.1.1:/opt/STM/STLinux-2.3/devkit/arm/target
ip=192.168.1.10:192.168.1.1:192.168.1.1:255.255.255.0::eth0

These settings have been working fine for earlier kernels. The tcp dump
while doing the nfs boot is quite different between the 2.6.32 and
2.6.37 kernels.



Regards
Deepak

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