[yocto] GRUB fix for 1.1: Preferred approach for default grub version

[Richard Purdie]

On Mon, 2011-10-03 at 11:48 -0700, Darren Hart wrote:
> When grub2 was merged int oe-core, it became the default (rather than
> being explicitly requested by the 64b meta-intel BSPs). This breaks the
> live install on 32b systems, like the n450 - installing grub v1.99 with
> a grub v1 config.
> 
> We have a couple options on how to fix this.
> 
> 1) Set PREFERRED_PROVIDER_grub="0.97" in all 32b x86 machine configs
> 2) Set DEFAULT_PREFERENCE="-1" in the grub_1.99.bb recipe which would
>    affect all of oe-core.
> 3) Some alternate approach which would be the equivalent of
>    DEFAULT_PREFERENCE, but only for meta-yocto BSPs or the poky
>    "distro".
> 
> Given the time frame, I'd prefer to agree on the approach before writing
> and testing patches. Preferences?

I thought I'd been assured grub2 worked fine for our 32 and 64 bit
platforms? :/.

The correct question here is why doesn't grub2 work on 32 bit platforms?

The answer might be "we need for time than is available in the 1.1
release to fix it" but I'd at least like to see the answer to the
question before we start with workarounds.

Cheers,

Richard