From: "H. Peter Anvin" <hpa@zytor.com>
To: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: mingo@redhat.com, linux-kernel@vger.kernel.org,
yinghai@kernel.org, just.for.lkml@googlemail.com,
tglx@linutronix.de, hpa@linux.intel.com
Subject: Re: Early console confusion
Date: Wed, 22 Sep 2010 08:56:15 -0700 [thread overview]
Message-ID: <4C9A271F.30608@zytor.com> (raw)
In-Reply-To: <201009220912.45360.bjorn.helgaas@hp.com>
On 09/22/2010 08:12 AM, Bjorn Helgaas wrote:
> Can somebody explain the differences between
>
> earlycon=uart,...
> earlycon=uart8250,...
> earlyprintk=serial,...
> console=uart,...
> console=uart8250,...
>
> I'm not really convinced we need them all, and it's getting a
> little confusing.
>
Some of them come from the embedded industry, where it's felt that you
have to be able to specify the exact parameters because there are no
standards, and some come from the PC world where "serial port 0" is a
well-defined concept and noone wants to bloody call it "uart8250,0x3f8".
-hpa
--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.
next prev parent reply other threads:[~2010-09-22 15:56 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-29 17:25 Linux 2.6.36-rc3 Linus Torvalds
2010-08-29 19:24 ` Chris Ball
2010-08-29 19:24 ` Torsten Kaiser
2010-08-29 22:27 ` Yinghai Lu
2010-08-29 22:36 ` Yinghai Lu
2010-08-29 22:53 ` Yinghai Lu
2010-08-30 4:50 ` Torsten Kaiser
2010-08-30 1:12 ` [PATCH] x86, setup: fix earlyprintk=serial,ttyS0,115200 Yinghai Lu
2010-08-30 1:13 ` [PATCH] x86, setup: fix earlyprintk=serial,0x3f8,115200 Yinghai Lu
2010-09-08 21:28 ` H. Peter Anvin
2010-09-09 7:23 ` Yinghai Lu
2010-09-21 19:58 ` [tip:x86/urgent] x86, setup: Fix earlyprintk=serial,0x3f8,115200 tip-bot for Yinghai Lu
2010-09-21 19:58 ` [tip:x86/urgent] x86, setup: Fix earlyprintk=serial,ttyS0,115200 tip-bot for Yinghai Lu
2010-09-22 15:12 ` Early console confusion Bjorn Helgaas
2010-09-22 15:56 ` H. Peter Anvin [this message]
2010-09-22 16:44 ` Bjorn Helgaas
2010-09-22 16:53 ` H. Peter Anvin
2010-09-22 18:21 ` Bjorn Helgaas
2010-09-22 18:26 ` H. Peter Anvin
2010-08-29 22:40 ` Linux 2.6.36-rc3 Jean-Denis Girard
2010-08-30 5:23 ` Borislav Petkov
2010-08-30 8:00 ` Jean-Denis Girard
2010-08-30 8:47 ` Miguel Calleja
2010-08-30 17:00 ` Suresh Jayaraman
2010-08-30 17:14 ` Shirish Pargaonkar
2010-08-30 17:25 ` Randy Dunlap
2010-08-30 21:27 ` Steve French
2010-08-30 19:28 ` Piotr Hosowicz
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-all 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=4C9A271F.30608@zytor.com \
--to=hpa@zytor.com \
--cc=bjorn.helgaas@hp.com \
--cc=hpa@linux.intel.com \
--cc=just.for.lkml@googlemail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=tglx@linutronix.de \
--cc=yinghai@kernel.org \
/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;
as well as URLs for NNTP newsgroup(s).