Bug#960390: x86_64: No serial port output

[Punit Agrawal <punitagrawal@gmail.com>]

Hi Steve,

Here's an updated patch to enable serial console in grub when using
debian-installer on an EFI based system. Sorry it took longer than
anticipated - got pulled into some other things.

The patch has been updated based on your feedback (and some
experimentation). Notably, this version does not touch other
configuration but uses the "--append" option of
terminal_output/terminal_input to add serial port support.

I've tested this on Qemu and it solves the problem I was hitting.
If the changes look OK, do consider including the patch to get wider
coverage / testing in more scenarios.

Thanks,
Punit

Attachment: 0001-x86-grub-efi-Enable-serial-console.patch
Description: Binary data