cvs commit: src/sys/dev/sk if_sk.c if_skreg.h

[Maxim Sobolev]

John Baldwin wrote:
> On Friday 28 April 2006 15:27, Maxim Sobolev wrote:
>> Nate Lawson wrote:
>>> Maxim Sobolev wrote:
>>>>> BTW, thanks for your work on the reboot issue.  Oh, and are you using
>>>> Don't mention it. The other big and still unresolved issue is getting 
>>>> SMP working. I have tried to debug it and as long as I can tell second 
>>>> core for some reason doesn't start at all. I have even attempted to 
>>>> borrow second CPU kick in magic from xnu (Darwin kernel), but the 
>>>> result is the same. My current guess is that since it's mobile 
>>>> processor, the 2nd core may be turned off for power saving purposes 
>>>> and needs some (ACPI?) hohomagic to power it up. Unfortunately I can't 
>>>> find any documentation on the processor to check. It is interesting 
>>>> that both Linux and Windows don't have any problems with getting it 
>>>> working OOB.
>>> I don't think there's any special ACPI thing to do.  If you have acpi 
>>> loaded, the MADT (apic table) probe should just work.  Are you sure you 
>>> have the latest -current since cperciva@ fixed the Core Duo limitation 
>>> we had?
>> Yes, I do have the latest kernel (circa this morning). Do you have any 
>> other ideas about what can be wrong?
>>
>> BTW, in the following lapic_ipi_raw call, is the last argument expected 
>> to be 0 or maybe it's typo and it should be apic_id instead?
>>
>> /* do an INIT IPI: deassert RESET */
>> lapic_ipi_raw(APIC_DEST_ALLESELF | APIC_TRIGMOD_LEVEL |
>>      APIC_LEVEL_DEASSERT | APIC_DESTMODE_PHY | APIC_DELMODE_INIT, 0);
> 
> No, it's using ALLESELF for the destination to send it to everyone but
> the current CPU.  Try enabling the CHECK_POINTS code in mp_machdep.c
> and mpboot.s to see if you can figure out how far the AP gets before
> it goes belly up.

It gets nowhere, unfortunately. I see 99 99 99 99 99 as a trace. :(

BTW, can you check the following URL, it's the changes intel has maiden 
to ia32 manual after releasing Core Duo. Maybe you can spot something 
there. There are some lapic-related changes.

http://download.intel.com/design/Pentium4/specupdt/25204616.pdf

-Maxim