On 01/10/15 14:51, Martin Lucina wrote:
On Wednesday, 30.09.2015 at 21:00, Andrew Stuart wrote:
Any ideas?
I’m out of my depth technically here but on Linux you can send console output
to both VGA and serial. I don’t know if that is practical or relevant here.
https://www.kernel.org/doc/Documentation/serial-console.txt
We definitely don't want to do that by default because a) It's slow b) The
platform might have something else on COM1.
Isn't your assumption that if there's no VGA, there can never be
anything else on COM1 except a 115200/8N1 serial console?
Anyway, I've figured out the obvious answer, which is to detect Xen (or in
fact other hypervisors) using CPUID and prefer the serial console if on
Xen. Just trying to get it into a committable state...
Console config (port,params) is needed in any case, so why not start
from that, and then see how to make things as convenient as possible
(but no more convenient than that!). "first make it right, then make it
$improved".
