[U-Boot] printf("%d") breaks u-boot 2015.01+

Pavel Machek pavel at denx.de
Mon Apr 6 21:23:23 CEST 2015


On Mon 2015-04-06 20:48:45, Marek Vasut wrote:
> On Monday, April 06, 2015 at 08:14:44 PM, Pavel Machek wrote:
> > On Mon 2015-04-06 16:59:55, Marek Vasut wrote:
> > > On Monday, April 06, 2015 at 04:40:09 PM, Pavel Machek wrote:
> > > > Hi!
> > > > 
> > > > In u-boot 2015.04-rc, as soon as execution hits printf("%d"), it
> > > > hangs. (Usually, that's after "DRAM: " message).
> > > 
> > > printf("%d") expects an argument, so could it be that it touches
> > > random piece of memory and thus hangs?
> > 
> > It had an argument, sorry for confusion. I was actually doing this:
> > the test with %s works, the one with %d kills it.
> > 
> > I suspect too small stack...?
> 
> Does this happen in the SPL ? You can check the stack placement and
> utilization with BDI to verigy your hypothesis.

No, this is u-boot proper, and I'm chainloading it (see first mail) --
so unsupported configuration.

I'm preparing to flash the u-boot into the NOR, that should tell us if
it is chainloading problem or not.

Best regards,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html


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