Newbus question

[O'Connor, Daniel]

On 16 Nov 2014, at 5:05, Alexander Kabaev <kabaev at gmail.com> wrote:
>> I think that debugging should be available much earlier than the
>> device tree is explored and devices are attached.  It probably makes
>> sense to operate the debugging port outside the newbus at all, in
>> particular, before the pci and acpi machinery is initialized.
>> 
>> You might want a callback from ehci driver when it appropriated the
>> resources, to handle the case of bar realocation.
> 
> If one wants early debugger, then whole thing will need to be split
> into pre-newbus and after-newbus part, similar to dcons.

OK thanks.

I think for now I’ll just ignore the EHCI driver and get it working as a device driver which attaches to an EHCI controller.

After that works I’ll look at the early part, hopefully it won’t be too difficult :)

--
Daniel O'Connor
"The nice thing about standards is that there
are so many of them to choose from."
 -- Andrew Tanenbaum
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