[oe] [meta-handheld v2] linux-kexecboot: use kernel_conf_variable like linux.inc does and respect CMDLINE_DEBUG

[Paul Eggleton]

On Monday 21 November 2011 12:52:13 Martin Jansa wrote:
> On Mon, Nov 21, 2011 at 11:43:46AM +0100, Andrea Adami wrote:
> > On Sun, Nov 20, 2011 at 12:26 PM, Martin Jansa <martin.jansa at gmail.com>
> > wrote: Martin,
> > 
> > I agree for the use kernel_conf_variable but I'm unsure about
> > CMDLINE_DEBUG. In fact, I hardcoded it purposedly with commit 8929166
> > with the
> > following reasons:
> > 
> > * Being a second-stage bootloader we don't expect any output on screen.
> > * Adding 'debug' as commandline arg is pointless because
> > * linux-kexecboot is compiled without debug and printk in order
> > * to minimize the size.
> > * Full debug implies not only editing the commandline (e.g. earlyprintk)
> > * but re-enabling full debug options in the defconfigs
> 
> I had some issues with 3.2.0-rc2 when used as linux-kexecboot, that's
> why I've added this, but later found out that it's really a bit
> incomplete, that's why I have followup patch for this:
> https://gitorious.org/shr/meta-handheld/commit/6bc710615b587fc0bfd8fc4372cad
> 0de5599dd82?format=patch
> 
> But with latest SRCREV it works again, so in theory I don't need it, but
> still it would be usefull to have easy way to debug even this stage
> (maybe you still remember older kernel version where it worked fine
> as 3rd stage and failed to boot as 2nd stage..).
> 
> BTW: here is upgrade to 3.2.0-rc2 with those changes to
> linux-kexecboot.inc applied
> https://gitorious.org/shr/meta-handheld/commit/27ca3d24353a5473f4f1aade00ba7
> a52b667e28c?format=patch
> 
> (be aware that I do rebase that branch sometimes so if those commits are
> not valid anymore just look at last few commits in that branch).

As discussed on IRC I've merged the latest version of this branch to meta-
handheld master now, thanks.

Cheers,
Paul

-- 

Paul Eggleton
Intel Open Source Technology Centre