What do you use for kernel debugging?

[Adrian Chadd]

There's also something for XHCI.

Please please write it for freebsd. :)


-a


On 30 September 2014 21:45, O'Connor, Daniel <Daniel.O'Connor at emc.com> wrote:
>
> On 1 Oct 2014, at 0:14, Julian Elischer <julian at freebsd.org> wrote:
>> Unfortunately you can't use a USB serial as it requires the USB stack
>> be  working before it can be used..
>> similar with ethernet connected debugging which requires that the
>> driver for the ethernet hardware support it.
>> (which why we don't have it in the tree though it has been done
>> several times in the past).
>
> There IS a USB debug standard, Linux has some code to support it.
>
> I am not sure what percentage of hardware has it hooked up though (the host controller has a designated debug port but it could physically be anything).
>
> http://www.coreboot.org/EHCI_Debug_Port
>
> The hardware is bit more expensive than a null modem or firewire cable though :(
>
> Regards,
>         Daniel O’Connor
>
> Senior Software Engineer
> Isilon Platforms Team
>
>
>
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