Want console message spew [Re: qi-update-README.patch]

Andy Green andy at openmoko.com
Tue Nov 25 15:02:00 CET 2008

Hash: SHA1

Werner Almesberger wrote:
> Andy Green wrote:
>> This definitely is useful if you have a panic or other serious trouble
>> and no debug board, but if you're working OK it just slows boot down.
> Harald once mentioned that he may Glamo-accelerate the text console.
> (I once tried to put Xglamo's block copy code into the kernel but
> failed miserably. So it's not as easy as it seemed. Unfortunately,
> I lost my patch as well :-( )
> Maybe we'll eventually get something that makes console speed a bit
> less retro ...

Yes Graeme is doing an xorg driver for Glamo now, locking got discussed
as something that needs to be on kernel-side to match framebuffer -- as
did interrupt driven completion of accelerated operations which means
kernelside too.  So maybe this will come.

But thinking about spew vs debug info on LCM we can probably do better
than now by always having console=tty0 and either explicitly low
loglevel or default low loglevel, then if there's a panic or OOPS we
hear about it on LCM -- highly useful if there is no debug board around
- -- but normally not just the "xyz starting" type lines that are only
really interesting if there's a crisis.

- -Andy
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