[U-Boot-Users] TFTP timeout

[Stefan Roese <sr@denx.de>]

Hi Philippe,

On Friday 28 July 2006 17:13, Philippe Villet wrote:
> Browsing the mailing list i saw that some people met my problem but i can'
> find the answer. Here is my problem :
>
> TFTP transfer with u-boot (1.1.4) sometimes ended with timeout (TTT) and
> then a MAL error.
>
> I'am using a 440EP, with 2 PHY from Micrel (KSZ8001) in SMII mode. Under
> linux (ELDK 4.0, kernel 2.6.16) we have no problem (nfs, ftp, tftp work
> well).
>
> We used a Etheral to sniff and found out that u-boot ack one datapackage
> but when the next datapackage arrives u-boot doesn't seem to hear it.
> Instead u-boot timesout listening and sends another ack on the previous
> datapackage. The tftp server then retransmits the last datapackage again
> witch u-boot doesn't hear, u-boot times out and send another ack on the
> previous datapackage, and we are stuck in this loop.
>
> A previous discussion "[U-Boot-Users] TFTP times out?" ended with a bad
> timer implementation.

Timer should be ok for PPC440.

What did you define "CFG_RX_ETH_BUFFER" in your board config file to? Did you 
try to enable the debug output in the 4xx ethernet driver "INFO_4XX_ENET"? 
Are you using top-of-git UBoot version?

Best regards,
Stefan