From: Andrew Morton <akpm@linux-foundation.org>
To: Yinghai Lu <Yinghai.Lu@Sun.COM>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>,
Gerd Hoffmann <kraxel@redhat.com>, Andi Kleen <ak@suse.de>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH]serial: make early_uart to use early_prarm instead of console_initcall
Date: Sun, 20 May 2007 20:23:32 -0700 [thread overview]
Message-ID: <20070520202332.145d93a6.akpm@linux-foundation.org> (raw)
In-Reply-To: <200705181900.17101.yinghai.lu@sun.com>
On Fri, 18 May 2007 19:00:16 -0700 Yinghai Lu <Yinghai.Lu@Sun.COM> wrote:
> [PATCH]serial: make early_uart to use early_prarm instead of console_initcall
>
> Make early_uart to use early_param, so uart console can be used earlier.
> Make it to be bootconsole with CON_BOOT flag, so can use console handover
> feature. and it will switch to corresponding normal serial console automatically.
> new command line will be
>
> earlycon=uart,io,0x3f8,9600n8
> earlycon=uart,io,0x3f8,9600n8 console=tty0
>
> it will print in very early stage
> Early serial console at I/O port 0x3f8 (options '9600n8')
> later for console it will print
> console handover: boot [uart0] -> real [ttyS0]
I'll queue this up for some testing, but I'd be a bit reluctant to send it
into Linus due to my poor understanding of what it actually does. What
_is_ an early console, and how does it differ from a non-early one?
Someone help, please.
Coudl you please provide a patch against
Documentation/kernel-parameters.txt as well?
next prev parent reply other threads:[~2007-05-21 3:26 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-19 2:00 [PATCH]serial: make early_uart to use early_prarm instead of console_initcall Yinghai Lu
2007-05-21 3:23 ` Andrew Morton [this message]
2007-05-21 4:29 ` Yinghai Lu
2007-05-21 4:46 ` Andrew Morton
2007-05-21 6:56 ` Yinghai Lu
2007-05-21 16:53 ` Bjorn Helgaas
2007-05-21 17:36 ` Yinghai Lu
2007-05-21 18:02 ` Bjorn Helgaas
2007-05-21 18:39 ` Yinghai Lu
2007-05-21 10:22 ` Gerd Hoffmann
2007-05-21 16:39 ` Yinghai Lu
2007-05-21 10:42 ` Andi Kleen
2007-05-21 16:27 ` Bjorn Helgaas
2007-05-21 16:27 ` Yinghai Lu
2007-05-21 16:27 ` Bjorn Helgaas
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