Re: Questions about uefi bios's vga mode

[Tiger Liu <TigerLiu@zhaoxin.com>]

Hi, Andrew:
Thanks a lot.

best wishes,
-----邮件原件-----
发件人: afish@apple.com [mailto:afish@apple.com]
发送时间: 2017年9月1日 2:47
收件人: Tiger Liu
抄送: edk2-devel@lists.01.org
主题: Re: [edk2] [EDK2] Questions about uefi bios's vga mode


> On Aug 31, 2017, at 2:08 AM, Tiger Liu <TigerLiu@zhaoxin.com> wrote:
>
> Hi, experts:
> I have a question about uefi bios’s vga mode.
> Could we use VGA’s text mode to boot into uefi shell environment?
>
> It seems vga class driver/mini port driver could support VGA’s text mode.
>

Tiger,

You can always write a driver to produce the SipleTextOut protocol directly to produce a console on an arbitrary device. Duet may already have something close, I can't remember?

> It seems gop driver support graphic mode.
>

Yes GOP is a graphics abstraction, and the ROM carries the the code to produce SimpleTextout on top of GOP.

> Thanks
>
>
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