On Wed, Sep 23, 2015 at 03:38:20PM +0800, Ming Lei wrote:
Hi Leif,
On Tue, Sep 8, 2015 at 8:43 PM, Leif Lindholm leif.lindholm@linaro.org 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] https://msdn.microsoft.com/en-us/library/windows/hardware/dn639131(v=vs.85).... [2] https://msdn.microsoft.com/en-us/library/windows/hardware/dn639132(v=vs.85)....
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 (http://www.openwebfoundation.org/legal/the-owf-1-0-agreements/owfa-1-0) which is think is noncontroversially GPL-compatible?
This set is a first attempt at implementing this.
From distribution view, the patchset looks very useful.
I have one simple question, are there other candidates for conveying this kind of information like what DBG2/SPCR does? Or are DBG2 and SPCR the offical speficiations to do such things in ARM server industry?
They are mandated in the SBBR spec
Graeme