[coreboot] [PATCH]: Disable ExtINT in ioapic.c

Bao, Zheng Zheng.Bao at amd.com
Mon Mar 1 06:53:10 CET 2010

I tried other board. The K8+rs690+sb600 and k8+rs780+sb700 don't work on
current version, while fam10+rs780+sb700 works. I doubt that it has
something to do the spurious interrupt or timer interrupt. I don't know.
Do you have any idea?


-----Original Message-----
From: coreboot-bounces at coreboot.org
[mailto:coreboot-bounces at coreboot.org] On Behalf Of Stefan Reinauer
Sent: Wednesday, February 03, 2010 9:41 AM
To: coreboot at coreboot.org
Subject: Re: [coreboot] [PATCH]: Disable ExtINT in ioapic.c

On 2/2/10 4:25 AM, Bao, Zheng wrote:
> Index: src/arch/i386/smp/ioapic.c
> ===================================================================
> --- src/arch/i386/smp/ioapic.c	(revision 5073)
> +++ src/arch/i386/smp/ioapic.c	(working copy)
> @@ -110,7 +110,7 @@
>  #endif
>  	/* Enable Virtual Wire Mode */
> ExtINT;
> +	low = DISABLED;
>  	high = bsp_lapicid << (56 - 32);
>  	io_apic_write(ioapic_base, 0x10, low);

Hm.. This will break quite some other boards...

Is there any particular reason why the dbm690t will not work in virtual
wire mode?

I think either the sb600 code should call clear_ioapic() instead of
setup_ioapic() or (maybe better) the setup_ioapic() function should get
an additional parameter virtual_wire

Anyways, maybe we should try to unify clear_ioapic and setup_ioapic

(also, the function should create a device node and append it to the
bridge it is called from)


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