Re: [RFC 0/5] console/acpi: add DBG2 and SPCR console configuration

From: Al Stone
Date: Tue Jan 12 2016 - 19:08:04 EST

On 01/12/2016 08:14 AM, Christopher Covington wrote:
> Hi,
> On 09/08/2015 08:43 AM, Leif Lindholm wrote:
>> Support for configuring bootconsole and console via the ACPI tables
>> DBG2 (Debug Port Table 2) [1] and SPCR (Serial Port Console Redirection
>> Table) [2], defined by Microsoft, has been discussed on and off over the
>> years.
>> [1]
>> [2]
>> Licensing concerns have prevented this happening in the past, but as of
>> 10 August 2015, these tables have both been released also under OWF 1.0
>> (
>> which is think is noncontroversially GPL-compatible?
>> This set is a first attempt at implementing this.
>> Submitting as an RFC since the SPCR handling currently depends on the
>> console driver being initialized after subsystem initcalls. Workaround
>> to enable testing surrounding infrastructure in 5/5, _really_ not
>> intended to be merged.
>> (Suggestions for acceptable ways of working around this appreciated.)
> What's required for this to graduate from RFC status? Is anyone working
> on it?
> Thanks,
> Christopher Covington

Well, we have asked Aleksey Makarov <aleksy.makarov@xxxxxxxxxx> to pick
this task up from Leif within Linaro. Perhaps drop him a line and see
if the two of you can collaborate on this somehow? I think it just needs
nudging and a bit of TLC to get it past being an RFC.

Al Stone
Software Engineer
Linaro Enterprise Group