Subject: some questions on new dual 1Gig G4's support?
From: Kevin B. Hendricks (khendricks@ivey.uwo.ca)
Date: Sat Feb 02 2002 - 07:51:49 MST
Hi,
I have never played around in the cpu specific parts of the kernel (except
for cache flush code) and don't really know my way around (yet!).
I have collected the 7455 info (pdf files including errata) from the
Motorola site and rsynced benh latest 2.4 kernel.
I grepped for 7450 and found references to it in the following files:
in arch/ppc/kernel/
in l2cr.S, sleep.S, cputable.c, and idle.c (and head.S)
Ben Hinted that simply duplicating the cputable.c entry for the 7450 to
make a 7455 might be a good beginning.
So this now leads me to a few questions:
1. are the cpu specific things I might have to play with all in the files
I found that reference 7450 or are there other files I need to play with
2. I read the errata for the 7455 and it was quite short. Are errata
cumulative in some way? Are these just the new errata since the 7450?
(i.e. do I need to grab and worry about the 7450 errata too?). Or has the
errata listed in the 7450 been dealt with by changes in the 7455 and this
is all I need to know hardware errata-wise.
3. Are there any other references I should be reading that describe
differences in the 7450 and the 7455 that are important for getting a
kernel up on my new machine?
Thanks,
Kevin
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