Re: EFI Boot Stub Early Console

From: H. Peter Anvin
Date: Mon Mar 12 2012 - 18:23:33 EST


On 03/12/2012 03:18 PM, Shea Levy wrote:
> On 3/12/12 6:11 PM, H. Peter Anvin wrote:
>> On 03/12/2012 12:00 PM, Shea Levy wrote:
>>> On 3/12/12 2:56 PM, Shea Levy wrote:
>>>> console=tty0
>>> Sorry, that should have been console=ttyS0
>> Have you tried earlyprintk=serial,ttyS0?
>>
>> -hpa
>>
>
> Just tried. Still nothing in the VirtualBox window, serial port showed
> boot output up until "[ 0.000000] console [tty0] enabled, bootconsole
> disabled", when the rest of the boot process happened in VirtualBox.
>

That sounds like one would expect, no?

I don't think anyone has implemented an EFI earlyconsole yet, and you
can't rely on EFI handing over the screen in a mode the kernel can
handle with earlyconsole=vga, so there aren't really any other alternatives.

-hpa

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