Re: [Ps2hacking-devel] Redboot even fails to load Linux-2.4 kernel

[Takahide H. <tak...@hi...>]

Hello  Yaegashi-san,

Thank you very much for testing my binary image quickly and giving me
a useful comment.  The problem is solved!


|Thank you for playing with my software.  I greatly appreciate your
|feedback.  And I'm glad that I've found another PS2 Linux kernel
|hacker in Japan. :->
|

It's so cool that you did make redboot working on PS2. Your effort
makes kernel hacking much easier and boosts kernel development!!


|What is your network configuration?  My TFTP server is Linux 2.4.5
|with tulip NIC, and connected with PS2 via a cheap 10/100Mbps
|switching hub.


I was using 10Base-T half-duplex hub, SiS900 NIC on motherboard and 
TFTP server running on Linux-2.2.18pre21 (debian 2.2).
Today I replaced the hub with new one which can do 100Base-T then the
problem is solved! 

Packet analyzer (ethereal) shows that redboot stops to send TFTP ACK
packet after 2800 - 3300th TFTP DATA packets on my 10Base-T network. It
seems that kernel images of linux-2.2 did not hit this bug since they
are smaller than ones of linux-2.4. I guess that transmit queue
management in the ethernet driver of redboot has some problem
when transmit queue becomes full and transmitter gets busy at the same
time. ( I experienced similar situation in other project)



--- Takahide HIGUCHI  e-mail: tak...@hi...