Date: Fri, 10 Jan 2003 13:25:19 -0500 (EST) From: John Baldwin <jhb@FreeBSD.org> To: Attila Nagy <bra@fsn.hu> Cc: cvs-all@freebsd.org, cvs-committers@freebsd.org, Alexey Dokuchaev <danfe@nsu.ru> Subject: Re: cvs commit: src/sys/i386/i386 identcpu.c Message-ID: <XFMail.20030110132519.jhb@FreeBSD.org> In-Reply-To: <Pine.LNX.4.50.0301101857320.510-100000@scribble.fsn.hu>
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On 10-Jan-2003 Attila Nagy wrote: > Hello, > >> > Well it now distinguish *real* PIII and Celeron (if it's ever possible)? >> The kernel can only tell what the CPU tells it. :) > Don't bite me, but leenuks can do it. > AFAIK this is the magic: > > /* Names for the Pentium II/Celeron processors > detectable only by also checking the cache size. > Dixon is NOT a Celeron. */ > if (c->x86 == 6) { > switch (c->x86_model) { > case 5: > if (l2 == 0) > p = "Celeron (Covington)"; > if (l2 == 256) > p = "Mobile Pentium II (Dixon)"; > break; > > case 6: > if (l2 == 128) > p = "Celeron (Mendocino)"; > break; > > case 8: > if (l2 == 128) > p = "Celeron (Coppermine)"; > break; > } > } > > if ( p ) > strcpy(c->x86_model_id, p); > > > The above is from arch/i386/kernel/setup.c We used to use similar tricks but turned it off b/c it was not deemed to be worth the extra effort. :) The brand index stuff only works on Pentium III's and above btw. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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