[GSoC - x86_64] Console / serial communication

[Amaan Cheval]

I believe it isn't, but QEMU is being "helpful" and multiplexing the COM1
(RTEMS) stream with the VGA/VBE/etc. text mode streams.

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!

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

On Thu, Jun 28, 2018, 3:39 AM Chris Johns <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
>
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