From: Andrew Fish <afish@apple.com>
To: Tiger Liu <TigerLiu@zhaoxin.com>
Cc: "edk2-devel@lists.01.org" <edk2-devel@lists.01.org>
Subject: Re: Questions about uefi bios's vga mode
Date: Thu, 31 Aug 2017 11:47:12 -0700 [thread overview]
Message-ID: <AEA9F156-516B-48DC-85EA-A9E6B4C6F13C@apple.com> (raw)
In-Reply-To: <1E4DA6F54C53C24B98E8E8D172B945AF02B56F59@ZXBJMBX01.zhaoxin.com>
> 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
>
>
> 保密声明：
> 本邮件含有保密或专有信息，仅供指定收件人使用。严禁对本邮件或其内容做任何未经授权的查阅、使用、复制或转发。
> CONFIDENTIAL NOTE:
> This email contains confidential or legally privileged information and is for the sole use of its intended recipient. Any unauthorized review, use, copying or forwarding of this email or the content of this email is strictly prohibited.
> _______________________________________________
> edk2-devel mailing list
> edk2-devel@lists.01.org
> https://lists.01.org/mailman/listinfo/edk2-devel
next prev parent reply other threads:[~2017-08-31 18:44 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-31 9:08 Questions about uefi bios's vga mode Tiger Liu
2017-08-31 18:47 ` Andrew Fish [this message]
-- strict thread matches above, loose matches on Subject: below --
2017-09-01 3:24 Tiger Liu
2017-09-01 6:17 Tiger Liu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-list from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=AEA9F156-516B-48DC-85EA-A9E6B4C6F13C@apple.com \
--to=devel@edk2.groups.io \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox