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 <chr...@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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