ubuntu-loongson team mailing list archive

[Siggy Brentrup <bsb@xxxxxxxxxxxxxx>]

On Thu, Jul 30, 2009 at 16:27 +0800, LIU Qi wrote:
> On Wed, Jul 29, 2009 at 09:01:18AM +1200, Kai-Cheung Leung wrote:
>  > Hi Mr Liu,
>  > 
>  > We need to know these technical details of Loongson processors
>  > (include differences between Loongson 2 and the upcoming Loongson 3)
>  > before we can set up the toolchain.
> There isn't very good English document on the technical details of
> Loongson processors related to the software part. We do have Chinese
> documents. I can provide to you if you could read Chinese. Also I am
> glad to answer all questions related to the Loongson processors.

May be google translation can help (I never had use for it up to now,
dunno if they support Chinese -> English).  It might even be fun to
learn to read Computer Chinese (on an aside, that's a joke in german,
people who are mostly computer illiterate often term documentation
they don't understand as "Komputer chinesisch").

Coming from a computer architecture (esp. microprogramming) background
I'm highly interested in seeing Loongson specs.
  
> Loongson-2 is a single-core MIPS processor and Loongson-3 is a
> multi-core processor. The main instruction codes are kept the same,
> but some of instruction codes are adjusted to conform to the MIPS64
> specification. 


>                 Most of these modified instruction codes could not be
> generated by gcc compiler. They are used mainly by hand-writing codes.
> So basicly there is no difference in software between the Loongson2 and
> Loongson3 machines except the Linux kernel.

see my reply to a followup on this message.

curiously
  Siggy
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