Re: Bay Trail 32bit UEFI

On Wed, Mar 2, 2016 at 2:10 AM, Joe Holden <mail_at_m.jwh.me.uk> wrote:

> On 02/03/2016 01:45, Lundberg, Johannes wrote:
>
>> CherryTrail devices/boards with 64bit UEFI are already out. Upgrading
>> the hardware is one solution (I did).
>>
>> I'm thinking of the sticks etc, they all have 32bit UEFI and no
> CSM/legacy boot, but have 64bit cpus



Yeah and it sucks. All to adapt to Microsoft who couldn't make 64bit UEFI
boot loader in time (or so I heard)...
I heard though that newer (Linux) versions of Intel Compute Stick would
have 64bit UEFI but I'm not sure.


>
> I never did try FreeBSD on BayTrail but for running Linux on BayTrail I
>> used special built Grub that was 32bit but could load 64bit OS. Could
>> this kind of Grub boot a 64bit FreeBSD, I wonder?
>>
>> I looked at this but honestly it looked like a giant nightmare - I did
> get grub loading on a test platform (tablet, for display etc) but didn't
> manage to make it boot anything
>

This page contains some instructions and a downloadable booti32.efi image
that you can put in the EFI folder. That will boot a 64bit grub that should
be able to boot a 64bit OS.

http://liliputing.com/2013/10/booting-ubuntu-asus-transformer-book-t100.html

I do have customized Arch Linux memstick image with Grub and this
booti32.efi image so it boots on these systems. This can be used to install
a Grub bootloader that maybe can boot FreeBSD.

One question is, would Grub's filesystem drivers for FreeBSD work in this
mode?

Maybe I should give it a shot today..


>
>> On Tue, Mar 1, 2016 at 5:20 PM, John Baldwin <jhb_at_freebsd.org
>> <mailto:jhb_at_freebsd.org>> wrote:
>>
>>     On Sunday, February 28, 2016 07:00:06 AM Joe Holden wrote:
>>     > Hi all,
>>     >
>>     > Apologies if this is the wrong list...
>>     >
>>     > Is there any plan to support booting FreeBSD on 32bit UEFI systems
>> (with
>>     > or without 64bit kernel/userland)? Obviously there is no i386 efi
>> loader
>>     > currently so neither is possible...
>>
>>     I don't think anyone is actively working on it.  I think it shouldn't
>> be
>>     that much work once the i386 loader is resurrected.  The i386 kernel
>>     just
>>     needs to use the EFI memory map and I think the rest of it should
>>     generally
>>     just work.
>>
>>     --
>>     John Baldwin
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>
>
>

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