[U-Boot-Users] Yucca ethernet timeout

Mike Scheutzow scheutzow at alcatel-lucent.com
Sat Mar 10 15:45:56 CET 2007

Stefan Roese wrote:
 > On Friday 09 March 2007 15:01, Dale Dunlea wrote:
 >> Since the upgrade, I'm seeing timeouts during TFTP.

 > How often does it happen? Has your network lot's of broadcast messages?

I see this timeout problem on my mpc8343 port, using 1.1.4 network code.

Prior to my workaround, it happened on 99% of the tftp transfers. My 
u-boot test network is tiny (3 machines, 100 Mbps), and has almost no 
traffic on it.  The bug appears when code optimization (-Os) is on, but 
does not occur with no optimization.

My workaround was to add a delay of 100 usec at the bottom of the 
receive polling loop (in net/net.c, I believe.)  A delay of 10 usec did 
not cure the symptom.

Mike Scheutzow
scheutzow at alcatel-lucent.com

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