Re: Activating L3 cache on a Crescendo G4 400 card (powerMac 7300)

[Michel Lanners <mlan@cpu.lu>]

On  27 Dec, this message from simonraven@istop.com echoed through cyberspace:
> too bad there isn't a kernel driver to enable the cache on those cards
> at boot up under debian, cuz then you wouldn't need bootx, you'd be
> able to quik ;).

There is, actually. You can specify an l2cr value on the kernel command
line. Here is mine on my G3-upgraded 7600:

mlan@piglet:~$ cat /proc/cmdline 
root=/dev/sda4 console=ttyS0 l2cr=0xa9000000 console=tty0 video=scrollback:64k video=controlfb: video=matrox: 
                             ^^^^^^^^^^^^^^^

You can also have a look at this page for more info (it's a bit outdated
by mostly still relevant):

http://www.cpu.lu/~mlan/linux/dev/g3upgrade.html

Cheers

Michel

PS By the way, I suppose you're talking about L2 (level 2) cache, not
L3? And I also think it's worth a benchmark removing the old L2 cache
DIMM on the motherboard...

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