Re: [Balloon] Does "boot flash" work with 2.6.34?

+++ Charles Manning [2010-08-20 12:49 +1200]:
> I'm trying to switch over to a 2.6.34 kernel but am having a problem.. I
> expect this is pilot error.
>
> Here's what I did:
>
> Changed KERNELVER to 2.6.34 in Makefile.inc
> Had to change PCMCIA stuff in .config
> make
> make dist
>
> utils/bbl --installer
> utils/bbl --kernel
>
> boot> boot flash
>
> This appears to do a regular yaffs boot that sufers since it does not find the
> 2.6.34 modules in yaffs.
>
> Has the kernel command line changed?

don't think do.

> I also am still a bit fuzzy as to what bbling installer vs kernel do so I
> tried
>
> utils/bbl --installer
>
> boot> boot flash
>
> and
>
> utils/bbl --kernel
>
> boot> boot flash
>
> and got the same

utils/bbl --installer puts in the NOR kernel+buildroot initramfs, which is
what gets booted when you do 'boot flash'

utils/bbl --kernel puts in the NAND kernel, which is what gets booted
when you do 'boot' (or 'boot kernel' I think).

If it's not a new checkout and you previously built 2.6.29, then this
is probably a make bug that is not correctly replacing the kernel
modules (I've seen that before). If it is a fresh checkout then I
don't know what's going wrong.

> I am trying to work around this by reverting the kernel back to a 2.6.29
> kernel (which has the modules in yaffs) and using this to copy in the 2.6.34
> modules, then loading and booting 2.6.34 kernel.

That should work. It is often most easily done via a USB stick.

I don't have a bb.org tree to hand, but build/kernel/ should have a
modules.tgz in it which continas the set of modules that should get
used. Check which version is in there. That's what gets unpacked into
the buildroot image and put into the yaffs image.

You might like to try out Nickb's new 'make menuconfig' style build
system - it should be much less annoying for the sort of work you are
doing (changing config and rebuilding). But it is also rather untested.
once someone has tested it and found things to be working better then
we should probably all start using it. I think it's in a branch -
NickB will be along shortly to provide clues.

Wookey
--
Principal hats: Linaro, Emdebian, Wookware, Balloonboard, ARM
http://wookware.org/