No L2 Cache on PReP Machine

Adrian Cox adrian at
Thu Aug 19 18:56:00 EST 2004

On Thu, 2004-08-19 at 08:43, Hager, Johannes, HRD/AB wrote:

> I am usign Linux on the Motorola MVME3604 Board. This Board complies to the
> PReP standard. So I configured the linux machine type to
> "CHRP/PowerMac/PReP".
> The kernel starts without showing any errors, but the problem is, that the
> L2 cache of the board is not recognized by the kernel. Does the linux not
> support L2 caches on PReP machines or is it another problem?

Generally Linux expects the boot firmware to set up the L2 and L3 caches
on PowerPC machines. Are you quite sure (from benchmark timings) that
the L2 cache is not working? The MVME3604 has an L2 cache outside the
processor, and it should work transparently.

- Adrian Cox
Humboldt Solutions Ltd

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