From: Sylvain Munaut <tnt@246tNt.com>
To: Olaf Hering <olaf@aepfle.de>
Cc: Paul Mackeras <paulus@samba.org>, linuxppc-dev@ozlabs.org
Subject: Re: [PATCH] autodetect serial console on efika
Date: Tue, 10 Apr 2007 22:25:48 +0200 [thread overview]
Message-ID: <461BF2CC.7090502@246tNt.com> (raw)
In-Reply-To: <20070410165246.GC508@aepfle.de>
Olaf Hering wrote:
> On Mon, Apr 09, Matt Sealey wrote:
>
>
>> It is entirely possible that a user may redirect the OF console output to
>> the PSC6 controller or another internal or external serial device (PCI
>> serial controller or so). In this case, the boot console will simply switch
>> to the UART on the back, which may be some other custom device and not a
>> valid console.
>>
>
> How many serial drivers are enabled in the public Efika firmware?
> With my change, both /failsafe and the /builtin/serial work.
> Both have device_type == "serial"
>
If I follow the logic of the patch correctly, as soon as there is no
"console=" in the command line and that the linux,stdout-path has a
device_type "serial", you add ttyPSC0 as console ?
The user could have plugged a console on the IRDA PSC and used a
bootscript to change the OF tree appropriately.
Or he could have put a PCI multi IO card and set the stdout to it ...
In all those cases, the ttyPSC0 is bogus ...
But in those "special cases", I guess it's not too much to ask the user
to provide a "console=" in the command line.
Sylvain
next prev parent reply other threads:[~2007-04-10 20:26 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-31 15:08 [PATCH] autodetect serial console on efika Olaf Hering
2007-03-31 17:06 ` Grant Likely
2007-04-09 12:56 ` Matt Sealey
2007-04-10 16:52 ` Olaf Hering
2007-04-10 20:25 ` Sylvain Munaut [this message]
2007-04-11 6:17 ` Olaf Hering
2007-04-11 18:47 ` Matt Sealey
2007-04-11 18:42 ` Matt Sealey
2007-04-12 15:59 ` Olaf Hering
2007-04-13 9:50 ` Matt Sealey
2008-01-21 15:29 ` Olaf Hering
2008-01-21 15:37 ` [PATCH] autodetect serial console on pegasos2 Olaf Hering
2008-01-21 15:56 ` [PATCH] autodetect serial console on efika Geert Uytterhoeven
2008-01-21 16:09 ` Andreas Schwab
2008-01-21 18:45 ` Grant Likely
2008-01-21 20:34 ` Olaf Hering
2008-01-21 20:38 ` Grant Likely
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