[Gumstix-users] boot error for USB OTG

[Anthony G. <gar...@gm...>]

Hi,

I'm working on a recovery tool for overo that allows an overo to boot
all the way to Linux over USB OTG. This idea is similar to the
beagle-board usb recovery process. The motivation is so that 'fat
fingered' maintenance chaps don't keep losing microSD cards
(http://comments.gmane.org/gmane.linux.distributions.gumstix.general/52077)

My current problem is that when the kernel loads the ramdisk as the
rootfs it throws a segmentation fault or kernel panic. This error is
very inconsistent in that sometimes I can boot all the way to
Angstrom, and sometimes I get a kernel panic, but never the same
things twice in a row. This behaviour is really strange since I'm
loading the exact same ramdisk rootfs into memory every time I power
on the overo.

Any ideas on why it inconsistently fails or partially succeeds while booting?

In bitbake I'm running.
bitbake virtual/kernel
bitbake min
bitbake u-boot
and I made my own x-loader so that I could add usb.

Attached is min.bb and a script that I use to cut out udev and some
other stuff at the beginning to make it boot faster. I was sort of
following Scott Ellis' instructions here:
http://www.jumpnowtek.com/index.php?option=com_content&view=article&id=65:gumstix-quick-boot&catid=35:gumstix&Itemid=67

Also attached are 3 error logs. All 3 came from trying to boot the
exact same rootfs and kernel, and yet they all fail at different
locations.


Thanks for the help!

Anthony G.