Date: Mon, 02 Sep 1996 13:42:45 -0600 From: Steve Passe <smp@csn.net> To: Terry Lambert <terry@lambert.org> Cc: freebsd-smp@FreeBSD.ORG, rv@groa.uct.ac.za, erich@uruk.org Subject: Re: SMP on Intel MG15 Message-ID: <199609021942.NAA06348@clem.systemsix.com> In-Reply-To: Your message of "Mon, 02 Sep 1996 12:20:41 PDT." <199609021920.MAA02683@phaeton.artisoft.com>
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Terry,
>B.4.1 specifically applies only to the 82489DX APIC. Is this a 486
>MP box you are trying to get running?
I am using document "Intel MP spec 1.4, July 1995, rev -004"
section B.4.1 says:
INIT IPIs can be used with systems based on the 82489DX APIC, or on systems
that are based on multiple Pentium (735/90, 815/100) processors.
THis board has 2:
CPU: Pentium (129.33-MHz 586-class CPU)
Origin = "GenuineIntel" Id = 0x52b Stepping=11
Features=0x3bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,APIC>
these looks like 815@ parts to me...
I wrote code to parse the MP config table and print the results. It finds
the table in the BIOS:
--------------------------------------------------------------------------
FreeBSD/SMP: boot CPU:0, 1 CPUs found
2nd CPU: p1: 5, p2: 10, p3: 15, p4,0:, p5:0
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ <<< test points added to code
-------------------------------------------------------------------------
MP Floating Pointer Structure found in BIOS @ physical address 0x000f7ba0:
signature: '_MP_, length: 16 bytes
version: 1.4, checksum: 0x66
MP Virtual Wire Mode
--------------------------------------------------------------------------
MP Config Table Header found @ physical address 0x000f7bb0:
signature: 'PCMP, base table length: 268
version: 1.4, checksum: 0xdd
OEM ID: 'INTEL ', Product ID: 'XXPRESS '
OEM table pointer: 0x00000000, OEM table size: 0
entry count: 25
local APIC address: 0xfee00000
extended table length: 220, extended table checksum: 190
--------------------------------------------------------------------------
Processor
apic ID: 0, version: 16
CPU is usable, CPU is is the bootstrap processor
family: 5, model: 2, stepping: 11
feature flags: 0x000003bf
Processor
apic ID: 2, version: 16
CPU is usable, CPU is is NOT the bootstrap processor
family: 5, model: 2, stepping: 11
feature flags: 0x000003bf
Bus
bus ID: 0, bus type: PCI
Bus
bus ID: 1, bus type: PCI
Bus
bus ID: 18, bus type: XPRESS
Bus
bus ID: 19, bus type: EISA
I/O APIC
apic ID: 14, version: 17
APIC is usable
apic address: 0xfec00000
Local INT
INT type: 3, flags: 0x0005
source bus ID: 19, IRQ: 0
destination APIC ID: 255, INT: 0
Local INT
INT type: 1, flags: 0x0005
source bus ID: 0, IRQ: 0
destination APIC ID: 255, INT: 1
--------------------------------------------------------------------------
FreeBSD 2.2-CURRENT #15: Sat Aug 31 08:59:12 1996
root@erroll.its.uct.ac.za:/usr/src/sys/compile/SMP
Calibrating clock(s) relative to mc146818A clock...
i586 clock: 133335509 Hz, i8254 clock: 1193190 Hz
CPU: Pentium (129.33-MHz 586-class CPU)
Origin = "GenuineIntel" Id = 0x52b Stepping=11
Features=0x3bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,APIC>
real memory = 67108864 (65536K bytes)
[ etc .... ]
--------------------------------------------------------------------------
>I think it's more likely that the problem is the system default state
>doesn't match one of the allowable configurations, and is maybe using
>a defaul configuration that we aren't handling properly. See chapter
>5 of the spec, "Default Configurations".
As the above printout shows, the system is using an MP configuration table.
we have changed the cpu_nmbr to reflect the fact that the AP is #2, NOT
#1. this change allows the kernel to boot without hanging, (default AP #1
hangs...). we are monitoring the APIC error registors and they seem happy.
--
Steve Passe | powered by
smp@csn.net | FreeBSD
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