Messages in this thread | | | Subject | Re: BIOS, Duron4 specifics... | From | (Eric W. Biederman) | Date | 13 Jul 2001 14:19:00 -0600 |
| |
John Clemens <john@deater.net> writes:
> On Tue, 10 Jul 2001, Dave Jones wrote: > > > On Tue, 10 Jul 2001, John Clemens wrote: > > > > > I've got a new laptop with an AMD Duron in it, based on the Athlon4 core > > > (PowerNow, SSE, hardware prefetch, etc.. Palomino core).. However, it > > > appears none of the useful features are enabled in the bios. For example, > > > Nowhere does it appear to enable SSE or the APIC. > > > > afair, the mobile Durons are not based upon the Athlon 4 core, and > > hence won't have the features you mention. You can verify this with > > my x86info tool which you can get from > > ftp://ftp.suse.com/pub/people/davej/x86info/x86info-1.3.tgz > > Actually, CPUID reports Family 6, Model 6, Rev2, which corellates directly > to Athlon4/MP (Model 6) processors. Whats surprising is that is doesn't > report model 7, which AMD claims is supposed to be the mobile Duron ;).. > make me wonder if it's really a neutered Athlon4. Besides, I though the > origional mobile durons (T-bird core, model 3) didn't even support > powernow...?
To enable SSE you have to write a bit into a undocumented register. For the APIC the procedure to enable it is the same as the P6 core.
Eric - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |