Subject: Re: Angel's Ebsa's and Master Aborts
To: Philip Blundell <Philip.Blundell@pobox.com>
From: Dave McConnell <davem@eastcoast.co.za>
List: port-arm32
Date: 10/18/1999 17:22:46
Hi Philip

Thanks for the reply.


>>I hear others are using the EBSA 285 with these devices and all is OK?
Well
>>I'd really like to know what it is we are doing wrong. An "undocumented"
>>jumper setting on the EBSA board (or backplane) perhaps?
>
>It is almost certainly a driver bug.
>It's
>remotely possible that a hardware fault could cause this but I would
exhaust
>all software avenues first if I were you.


Well the drivers are what come with NetBSD 1.4 for ARM which others
apparently have working on the same hardware.

I'd appreciate it if somebody who has a 21x4x ether or Intel 82557/8/9
working on EBSA 285 could let me know the exact hardware they use, including
PCI backplane.

It could possibly be the bootloader. I'm checking the 21285 registers at
this moment....The PCI devices themselves seem to be setup just fine.
Unfortunately I dont have the bootloader source.

Possibly somebody could "lend" me a bootloader image to eliminate that
possibility??
I can guarantee such a person that copyrights would be respected. I just
want to get to the bottom of this.

Also, it seems odd that the Angel debugger (with ethernet support) shows a
Master abort in the 21285. Surely this cannot be regarded as normal?? The
Angel+ether code has been downloaded from Intel's site....

Thanks
Cheers
D