Re: firewire debugging
Hi Julian, does anyone know if there is a limitation on firewire debugging on a machine with > 4GB or memory? I don't know of any Firewire cards that support physical access *above* 4GB. They may exist. For instance, the (last?) Texas Instruments PCIe 1394a/b chip, the XIO2213B, has the following text in it's data sheet - >The physical upper bound register is an optional register and is >not implemented. .. and this is the firewire OHCI register that contains the upper 16 bits of the architected 48-bit physical address. So, you can probably use it for some form of amd64 kernel debug since kernel txt/data/bss is < 4G, but accessing anything above 4G won't work. later, Peter. ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
Re: firewire debugging
On 5/9/11 12:48 PM, Sean Bruno wrote:
On Tue, 2011-05-03 at 14:35 -0700, Julian Elischer wrote:
does anyone know if there is a limitation on firewire debugging on a
machine with> 4GB or memory?
I have 1394 {a,b} cards. does it make a difference?
also, the firewire card on one machine stops it from booting..
is there a way to disable it during boot other than recompiling the
kernel without firewire?
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Ug. I've been looking for a machine that fails to boot with firewire in
it for a while. What are the odds that you can bring it to BSDCan?
err it's in a rack at work and surprisingly enough I took the card out
of it :-)
The machine booted with a 1394a card in a different slot. and
debugging works fine.
The card that stopped boot was a 1394b card. (PCIe)
I may be able to get the card to you though.
Sean
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Re: firewire debugging
On Tue, 2011-05-03 at 14:35 -0700, Julian Elischer wrote:
> does anyone know if there is a limitation on firewire debugging on a
> machine with > 4GB or memory?
>
> I have 1394 {a,b} cards. does it make a difference?
>
> also, the firewire card on one machine stops it from booting..
>
> is there a way to disable it during boot other than recompiling the
> kernel without firewire?
> ___
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> http://lists.freebsd.org/mailman/listinfo/freebsd-current
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Ug. I've been looking for a machine that fails to boot with firewire in
it for a while. What are the odds that you can bring it to BSDCan?
Sean
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Re: firewire debugging
On Tue, May 3, 2011 at 4:35 PM, Julian Elischer wrote:
> does anyone know if there is a limitation on firewire debugging on a machine
> with > 4GB or memory?
I've successfully used firewire dcons on amd64 with 8GB of RAM.
> I have 1394 {a,b} cards. does it make a difference?
Shouldn't make a difference.
> also, the firewire card on one machine stops it from booting..
>
> is there a way to disable it during boot other than recompiling the kernel
> without firewire?
Not sure, since I've never ran into this problem.
Hope this helps,
Chris Ruiz
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firewire debugging
does anyone know if there is a limitation on firewire debugging on a
machine with > 4GB or memory?
I have 1394 {a,b} cards. does it make a difference?
also, the firewire card on one machine stops it from booting..
is there a way to disable it during boot other than recompiling the
kernel without firewire?
___
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http://lists.freebsd.org/mailman/listinfo/freebsd-current
To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
