From: Brian L. Stuart stuart@colossus.mathcs.rhodes.edu
Subject: Plan 9 on Sun IPC + cgthree?
Date: Mon, 7 Apr 1997 08:24:26 -0500 [thread overview]
Message-ID: <19970407132426.DUQ5dO6z9R63Pd7Ejucj_rgf67Gtc-lLZF6s1_Bt4Rs@z> (raw)
>I found that although my cgthree is in a lower slot than the
>onboard bwtwo the kernel hardcodes bwtwo for SLC and IPC systems,
>rather than scanning the slots. Compiled a new kernel with quick
>hack: case IPC hardcode my cgthree instead. With this kernel the
>numbers go up to 7ec00 but otherwise no change.
>My first thought was that it was switching to the bwtwo after
>reaching the 7ea00, but the new kernel doesn't help. Any ideas
>where else to look?
I found exactly the same behavior with the original kernel,
but as it turned out, I did have a bwtwo only machine I
could try it on and it worked there. The kernel hack I
did was to allow the IPC to be picked up by the same code
as the SPARC 2 and let the kernel figure it out. It seems
to work fine.
In particular, I just commented out the case 0x52: label
in the switch statement and let the default: case pick it
up. That has booted correctly on an IPC with a cgthree.
Hope this helps,
Brian L. Stuart
Math/CS Dept, Rhodes College, Memphis, TN
stuartb@acm.org
http://www.mathcs.rhodes.edu/~stuart/
next reply other threads:[~1997-04-07 13:24 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
1997-04-07 13:24 Brian [this message]
-- strict thread matches above, loose matches on Subject: below --
1997-04-14 14:20 Andrew
1997-04-07 20:12 David
1997-04-07 9:45 Andrew
1997-04-07 5:03 forsyth
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