Thread (6 messages) 6 messages, 4 authors, 2000-07-26

Re: RTAS on PowerMac Newworld

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From: FASSINO Jean-Philippe <hidden>
Date: 2000-07-25 13:41:14

Benjamin Herrenschmidt wrote:
quoted
Just a question about RTAS on PowerMac G4,
does linux kernel can call RTAS function ?
And if not, why ?
I'm trying to do it and that fail...
RTAS in not correctly implemented in those machines. Apple is apparently
abandonning it, the implementation in ROM for all core99 machines is
bogus. What do you want to use RTAS for ?
In the kernel for PPC, a lot a code is here just to do what doing RTAS :
pci config,
via (CUDA and PMU) (no need if no ADB keyboard), ...
When doing embedded systems, this drivers is very big and can be saving by
using
RTAS which i think is a very good thing in  CHRP specification. It's
strange that
apple do not provide it fully.

JP




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 Jean-Philippe FASSINO              France Telecom R&D : DTL/ASR
 Tel : 04 76 76 45 52
 mailto:jeanphilippe.fassino@francetelecom.fr
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