[yocto] BBB doesn't boot

Denys Dmytriyenko denis at denix.org
Tue Apr 15 12:43:07 PDT 2014


On Tue, Apr 15, 2014 at 01:41:12PM -0400, Denys Dmytriyenko wrote:
> > > > > Some other things I tried with a "long" TMPDIR path (note that it's the
> > > > > TMPDIR path that makes the difference - in my tests I've been using
> > > > > /home/paul/poky/build2/much/longer/path/to/tmp). None of this helped:
> > > > > 
> > > > > * kernel built with gcc 4.7.2 and binutils 2.23.2
> > > > > * u-boot built with gcc 4.7.2 and binutils 2.23.2
> > > > > * u-boot from http://downloads.angstrom-distribution.org/demo/beaglebone/
> > > > > * earlyprintk and CONFIG_DEBUG_LL - no additional output printed
> > > > > 
> > > > > I think we're now at the point where we'd benefit from someone with better
> > > > > knowledge debugging the issue.
> > > > 
> > > > Ok, should we expand the search area? Since this is supposed to be vanilla
> > > > 3.14 kernel, can we try other platforms and see if they are similarly
> > > > affected? I'll try pinging our kernel guys for any ideas...
> > > 
> > > As far as I know it has only been observed with beaglebone (both white and 
> > > black, if it makes a difference). FWIW, qemuarm images from the autobuilder 
> > > boot just fine, and apparently the same is true of edgerouter (different 
> > > architecture but also uses u-boot).
> > 
> > But do those other platforms use uImage or zImage?

I don't yet know what is going on, but building in the same directory with 
sources (B = S) makes it work regarless of the path length:

/OE/RAM/poky-111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111/22222222222222222222222222222222222222222222222222222222222222222222/3333333333333333333333333333333333333333333333333333/tmp/work/beaglebone-poky-linux-gnueabi/linux-yocto/3.14+gitAUTOINC+928d7b2dda_0143c6ebb4-r0/linux

So, I just commented out setting kernel-specific B in linux-yocto.inc and any 
kernel now boots with long path:

#B = "${WORKDIR}/linux-${PACKAGE_ARCH}-${LINUX_KERNEL_TYPE}-build"

I'm copying Richard and Bruce directly to see if they may have a quick insight 
and/or accept it as a workaround for the release. I'll keep digging further, 
but if anyone cares to verify the above workaround works for them, I would 
appreciate. Thanks!

-- 
Denys



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