Re: [PATCH] Natsemi Geode GXn PM support and extended MMX

From: Alan Cox (alan@lxorguk.ukuu.org.uk)
Date: Sat Mar 16 2002 - 12:21:51 EST


> which allows APM to function. Which brings me on to my next question, does
> APM on Geode GXn work? The datasheet specifies that in order for the
> processor to enter suspend mode (in response to SUSP# assertion) the first
> criteria which must be met is that the USE_SUSP bit must be set (CCR2 bit
> 7). Part two of the patch simply enables extended MMX instructions for the
> GXn.

Be very careful playing with Cyrix/Geode stuff. In the APM case the BIOS
is doing the right thing on every box I have ever seen. The extended MMX
one looks right, providing we don't turn it on for any CPU lacking it

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