From: Clemens Koller <clemens.koller@anagramm.de>
To: zjznliang <zjznliang_popo@163.com>
Cc: linuxppc-embedded <linuxppc-embedded@ozlabs.org>
Subject: Re: Help ! 2.6.14 kernel can't bring up
Date: Fri, 18 Nov 2005 19:44:15 +0100 [thread overview]
Message-ID: <437E20FF.8060709@anagramm.de> (raw)
In-Reply-To: <20051118024803.E2988687A1@ozlabs.org>
Hello, zjznliang!
zjznliang wrote:
> Hi linuxppc-embedded！
>
> Hi , How to config the "early printk" in 2.6.14 linux configration???
Well... check the .config or the kernel sources for
CONFIG_EARLY_PRINTK
or
CONFIG_WANT_EARLY_SERIAL
Have a look at the bootup code of your board, where it's used.
I would call the printk as soon as the serial ports are initialized.
If that's too late, try to toggle some pin as early as possible.
If that doesn't work, and if you have no more ideas of what to do,
you might think about getting some hardware debugging tools.
Best greets,
--
Clemens Koller
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Anagramm GmbH
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Phone: +49-89-741518-50
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next prev parent reply other threads:[~2005-11-18 18:44 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-18 2:02 Help ! 2.6.14 kernel can't bring up zjznliang
2005-11-18 18:44 ` Clemens Koller [this message]
2005-11-18 23:14 ` David H. Lynch Jr.
-- strict thread matches above, loose matches on Subject: below --
2005-11-23 15:54 David H. Lynch Jr
2005-11-17 7:50 zjznliang
2005-11-17 11:02 ` Clemens Koller
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