[Top] [All Lists]

Re: 32-bit ABI

To: Ralf Baechle <>
Subject: Re: 32-bit ABI
From: "Maciej W. Rozycki" <>
Date: Sat, 24 Apr 2004 10:23:34 +0200 (CEST)
Cc: Stanislaw Skowronek <sskowron@ET.PUT.Poznan.PL>,
In-reply-to: <>
Organization: Technical University of Gdansk
Original-recipient: rfc822;
References: <> <> <> <> <>
On Sat, 24 Apr 2004, Ralf Baechle wrote:

> Actually the R10000 way to do something like this is to use the uncached
> attribute like in the Origin.  It allows using the same physical address
> space several times for different purposes.  So on node 0 of an Origin
> indeed memory starts at physical address zero and there is no hole for
> the firmware.  IP27 is afaik the only system using this R10000 feature
> which surprises me a little due to the otherwise great similarity of these
> two systems.

 That precludes the firmware from being run cached, though.  Not very 
nice, especially for callbacks, but perhaps a bit easier to deal with.

+  Maciej W. Rozycki, Technical University of Gdansk, Poland   +
+        e-mail:, PGP key available        +

<Prev in Thread] Current Thread [Next in Thread>