Resetting console on boot

[Lev Serebryakov]

On 15.07.2019 23:29, Ryan Moeller wrote:

> What do people think about having an early boot stage send some escape
> sequence to reset terminals to some sane default terminal settings? Often
> firmware or other causes will leave an unreadable font color or break line
> feeds, and the terminal tends to stay that way until a shell clears and
> resets the screen. If a shell can do it, surely loader could do it (or even
> earlier, if it is not too complex). To my knowledge it should be just a
> matter of printing some escape codes before starting the normal boot menus
> when using a serial console. I believe this is already done when the
> console is set to vidconsole or efi.
> 
> Thoughts? Suggestions?

 I've proposed this long ago for serial terminals:

https://reviews.freebsd.org/D17102
https://reviews.freebsd.org/D17103

 I have hardware which sets "black on black" before passing control to OS.

-- 
// Lev Serebryakov

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