[GSoC - x86_64] Console / serial communication

[Chris Johns]

On 28/06/2018 16:40, Amaan Cheval wrote:
> I believe it isn't, but QEMU is being "helpful" and multiplexing the COM1
> (RTEMS) stream with the VGA/VBE/etc. text mode streams.

OK.

> 
> I'm looking into how to either:
> - Make QEMU only print COM1 to stdio
> - Or, how to quiet FreeBSD through configuration (loader.conf lets us set
> console to comconsole, vidconsole, nullconsole, and efi)
> 
> I'll let y'all know as things progress!

Thanks.

> 
> Would it be a blocker if we couldn't quiet the UEFI firmware and loader.efi?
> 

Not at all. I was just curious and hopeful it just worked.

Chris

> On Thu, Jun 28, 2018, 3:39 AM Chris Johns <chrisj at rtems.org
> <mailto:chrisj at rtems.org>> wrote:
> 
>     On 28/06/2018 00:37, Amaan Cheval wrote:
>     > Since we skipped our meeting today, here's a quick screengrab of UART
>     > working with -serial stdio on QEMU (just inb/outb instructions
>     > directly, without termios or ns16550):
>     > https://i.imgur.com/tumtD3Z.png
> 
>     Nice. Is the loader.efi also using the UART?
> 
>     Chris
>