GRUB fix for 1.1: Preferred approach for default grub version

GRUB fix for 1.1: Preferred approach for default grub version

[Darren Hart]

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?

Thanks,

-- 
Darren Hart
Intel Open Source Technology Center
Yocto Project - Linux Kernel

Re: 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

Re: GRUB fix for 1.1: Preferred approach for default grub version

[Tom Zanussi]

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?
> 

Not sure why it wouldn't work for the n450 - it worked for the other
32-bit BSPs in meta-intel.  Let me take a look...

Tom

> Thanks,
> 

Re: GRUB fix for 1.1: Preferred approach for default grub version

[Tom Zanussi]

On Mon, 2011-10-03 at 12:01 -0700, Richard Purdie wrote:
> 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?
> 

I did test it with both 32-bit and 64-bit BSPs in meta-intel, so it
should work for the n450 too.

Tom

> 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
> 

Re: GRUB fix for 1.1: Preferred approach for default grub version

[Darren Hart]

On 10/03/2011 12:07 PM, Tom Zanussi wrote:
> On Mon, 2011-10-03 at 12:01 -0700, Richard Purdie wrote:
>> 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?
>>
> 
> I did test it with both 32-bit and 64-bit BSPs in meta-intel, so it
> should work for the n450 too.

I checked out edison in poky in meta-intel and built core-image-minimal
for n450. By default it builds GRUB 2, which after install boots to a
GRUB prompt with no menu.

Using the PREFERRED_PROVIDER method above with the edison branches
results in a GRUB 1 menu after install.

--
Darren

> 
> Tom
> 
>> 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
>>
> 
> 

-- 
Darren Hart
Intel Open Source Technology Center
Yocto Project - Linux Kernel

Re: GRUB fix for 1.1: Preferred approach for default grub version

[Tom Zanussi]

On Mon, 2011-10-03 at 13:40 -0700, Darren Hart wrote:
> 
> On 10/03/2011 12:07 PM, Tom Zanussi wrote:
> > On Mon, 2011-10-03 at 12:01 -0700, Richard Purdie wrote:
> >> 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?
> >>
> > 
> > I did test it with both 32-bit and 64-bit BSPs in meta-intel, so it
> > should work for the n450 too.
> 
> I checked out edison in poky in meta-intel and built core-image-minimal
> for n450. By default it builds GRUB 2, which after install boots to a
> GRUB prompt with no menu.
> 

I'm not even getting that far with edison - it fails at 'Searching for a
hard drive'.  I'd be happy to have it fail with no menu.

Can you send me the commit ids for meta-intel and poky that actually got
you that far, and if you could a serial capture of the install?

Thanks,

Tom

> Using the PREFERRED_PROVIDER method above with the edison branches
> results in a GRUB 1 menu after install.
> 
> --
> Darren
> 
> > 
> > Tom
> > 
> >> 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
> >>
> > 
> > 
> 

Re: GRUB fix for 1.1: Preferred approach for default grub version

[Tom Zanussi]

On Mon, 2011-10-03 at 16:18 -0700, Tom Zanussi wrote:
> On Mon, 2011-10-03 at 13:40 -0700, Darren Hart wrote:
> > 
> > On 10/03/2011 12:07 PM, Tom Zanussi wrote:
> > > On Mon, 2011-10-03 at 12:01 -0700, Richard Purdie wrote:
> > >> 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?
> > >>
> > > 
> > > I did test it with both 32-bit and 64-bit BSPs in meta-intel, so it
> > > should work for the n450 too.
> > 
> > I checked out edison in poky in meta-intel and built core-image-minimal
> > for n450. By default it builds GRUB 2, which after install boots to a
> > GRUB prompt with no menu.
> > 
> 
> I'm not even getting that far with edison - it fails at 'Searching for a
> hard drive'.  I'd be happy to have it fail with no menu.
> 
> Can you send me the commit ids for meta-intel and poky that actually got
> you that far, and if you could a serial capture of the install?
> 

Never mind, I actually didn't have a hard drive (wrong power source).
Once I changed that, I got a good install (on crownbay).

It would still be useful to have the serial capture for the n450
though...

Tom


> Thanks,
> 
> Tom
> 
> > Using the PREFERRED_PROVIDER method above with the edison branches
> > results in a GRUB 1 menu after install.
> > 
> > --
> > Darren
> > 
> > > 
> > > Tom
> > > 
> > >> 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
> > >>
> > > 
> > > 
> > 
> 
> 
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