CMOS breakage culprit found (?)

David P. Reese, Jr. daver at gomerbud.com
Tue Nov 18 02:18:40 PST 2003


On Mon, Nov 17, 2003 at 09:52:28PM -0800, Matthew Dillon wrote:
> 
> :        /* do a STARTUP IPI */
> :        lapic.icr_lo = icr_lo | 0x00000600 | vector;
> :        while (lapic.icr_lo & APIC_DELSTAT_MASK)
> :                 /* spin */ ;
> :        u_sleep(200);           /* wait ~200uS */
> :
> :Can someone else who has been experiencing CMOS damage verify this?
> :
> :-- 
> :   David P. Reese, Jr.                                     daver at xxxxxxxxxxxx
> :                                               http://www.gomerbud.com/daver/
> 
>     I'm an idiot.  No, it's true... I'm an idiot.  I never turned off
>     debugging in mpboot.s and the debugging writes to CMOS.  I turned it
>     off in the C code, but I never turned it off in mpboot.s.  Frag.
> 
>     I've just turned it off.  Someone please tell me that they aren't 
>     getting CMOS corruption any more!
> 
> 					-Matt
> 					Matthew Dillon 
> 					<dillon at xxxxxxxxxxxxx>

Thanks Matt.  I'm not at the console of my SMP machine, but I remotely
rebooted it and the changes seem to work.  It doesn't seem to be hanging
durring the POST.  It boots just fine.

-- 
   David P. Reese, Jr.                                     daver at xxxxxxxxxxxx
                                               http://www.gomerbud.com/daver/





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