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From: Helge Deller <deller@gmx.de>
To: parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] 2.6 & pdc_console pb on c110: "Warning: unable to
	open an initial console."
Date: Sun, 28 Dec 2003 21:00:40 +0100
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On Sunday 28 December 2003 19:02, Joel Soete wrote:
> My goal is to test pdc_console mainly for EARLY_BOOTUP_DEBUG facility (for later b2k 64bit kernel pb).
> Also afaik otc I have to switch off serial mux (well i say uncheck):
> drivers/serial/Kconfig
> [snip]
> config PDC_CONSOLE
>          bool "PDC software console support"
>          depends on PARISC && !SERIAL_MUX && VT
>          default n
> [snip]?

To debug such problems I often just turn on EARLY_BOOTUP_DEBUG 
in arch/parisc/kernel/pdc_cons.c, line 15:

/* Define EARLY_BOOTUP_DEBUG to debug kernel related boot problems.
 * On production kernels EARLY_BOOTUP_DEBUG should be undefined. */
#define EARLY_BOOTUP_DEBUG

HTH,
Helge