Add initrd support to all kernel configs.

Add initrd support to all kernel configs.

Initrd image will be used by factory install shim.

[girts, 2010-05-18 04:02:06]

I did editkernel per [1].  It pulled in some defaults that were not there
before.  Let me know if I should revert them, or if they are legit.

Tested: I've tested the changes by rebuilding the image and booting with both
initrd and without.

[1] http://dev.chromium.org/chromium-os/how-tos-and-troubleshooting/kernel-faq

[Mandeep Singh Baines, 2010-05-18 16:30:13]

Let's create a separate CL to run "kernelconfig oldconfig" first to canonicalize
the config. New Kconfig options have been added recently which aren't in the
splitconfig.

After that, LGTM if mbligh LGTMs.

[girts, 2010-05-19 08:28:22]

On 2010/05/18 16:30:13, Mandeep Singh Baines wrote:
> Let's create a separate CL to run "kernelconfig oldconfig" first to
canonicalize
> the config. New Kconfig options have been added recently which aren't in the
> splitconfig.

I noticed that you checked in the new splitconfigs.  I rebased my patches.

> After that, LGTM if mbligh LGTMs.

Added mbligh to reviewers, but I think he is on vacation.  I would like to check
this in tomorrow, as we could really use the sd card removal late tomorrow.

Tested by booting regular image, and an initrd image.

Cheers,
Girts

[Mandeep Singh Baines, 2010-05-19 18:37:56]

LGTM since this is urgent.

On Wed, May 19, 2010 at 1:28 AM,  <girts@chromium.org> wrote:
> On 2010/05/18 16:30:13, Mandeep Singh Baines wrote:
>>
>> Let's create a separate CL to run "kernelconfig oldconfig" first to
>
> canonicalize
>>
>> the config. New Kconfig options have been added recently which aren't in
>> the
>> splitconfig.
>
> I noticed that you checked in the new splitconfigs.  I rebased my patches.
>
>> After that, LGTM if mbligh LGTMs.
>
> Added mbligh to reviewers, but I think he is on vacation.  I would like to
> check
> this in tomorrow, as we could really use the sd card removal late tomorrow.
>
> Tested by booting regular image, and an initrd image.
>
> Cheers,
> Girts
>
> http://codereview.chromium.org/2092010/show
>

[girts, 2010-05-19 19:54:09]

On Wed, May 19, 2010 at 11:37 AM, Mandeep Singh Baines <msb@chromium.org> wrote:
> LGTM since this is urgent.

Thanks!

I will check it in.

Martin, please let me know if you have any objections.  If you do, we
can consider having a separate flavor with initrd, though we would
prefer not to, to avoid bitrot.

Cheers,
Girts

[Will Drewry, 2010-05-19 20:23:13]

On Wed, May 19, 2010 at 2:54 PM, Girts Folkmanis <girts@chromium.org> wrote:
> On Wed, May 19, 2010 at 11:37 AM, Mandeep Singh Baines <msb@chromium.org>
wrote:
>> LGTM since this is urgent.
>
> Thanks!
>
> I will check it in.
>
> Martin, please let me know if you have any objections.  If you do, we
> can consider having a separate flavor with initrd, though we would
> prefer not to, to avoid bitrot.
>

FWIW, we can add 'noinitrd' to the commandline to at least
short-circuit any initrd-related logic, even if it does add a little
bit more size to the kernel.