[U-Boot] U-Boot bring-up x86 Baytrail/ multiboot2 specification

[Mathias.Boos at sew-eurodrive.de]

Hi all,

thanks for your quick answer.
I wanted to test the u-boot option with coreboot payload on x86 first.
So I built coreboot and did a target download with 2 dead devices at the end.
I am just about to restore these devices (customized ones) with some difficulties in doing this ;-)...

When I have restored the devices I will continue my u-boot attempts.

I will still have another x86 board soon with Apollo Lake E3950. The board vendor told me
that there is really no way to use u-boot as BIOS replacement. Has anyone experience with u-boot and Apollo Lake?

@ Bin and Simon: do you have any idea if u-boot has multiboot2 support?
https://www.gnu.org/software/grub/manual/multiboot2/multiboot.html

Best regards
Mathias

-----Ursprüngliche Nachricht-----
Von: Stefan Roese [mailto:sr at denx.de]
Gesendet: Freitag, 16. November 2018 17:02
An: Marek Vasut; Boos, Mathias; U-Boot at lists.denx.de
Cc: Bin Meng; Simon Glass
Betreff: Re: [U-Boot] U-Boot bring-up x86 Baytrail/ multiboot2 specification

Hi,

On 16.11.18 16:46, Marek Vasut wrote:
> On 11/16/2018 10:00 AM, Mathias.Boos at sew-eurodrive.de wrote:
>> Hi,
>
> Hi,
>
>> I am just about to replace a BIOS based Intel Baytrail E3835 board with
> U-Boot due to ugly BIOS boottimes.
>> Has anyone any experience with this and can give me some tips how to
> do this?

Yes, using U-Boot as bootloader (without BIOS or coreboot) is
definitely possible for BayTrail boards. And the boot time is
definitely much better compared to usual BIOS times. I suggest you
take a look at some of the available board ports and the
documentation:

doc/README.x86

Minnowboard MAX should be a very good example.

> +CC Stefan Roese, IIRC he did something with U-Boot on X86.

Added Bin Meng and Simon Glass, as they did most of the work
for x86 U-Boot (also for BayTrail).

>> Additionally our system runs with an RTS Hypervisor to support 2 OS
> in parallel (WIN10, WEC2013).
>> The Hypervisor runs only on bootloader with multiboot2 support.
>> The bootloader has to load all necessary modules regarding the
> multiboot2 specification into storage (License, Configuration, WEC-Image).
>>
>> Is this possible with u-boot? Has u-boot multiboot2 support?
>>
>> https://www.gnu.org/software/grub/manual/multiboot2/multiboot.html
> [...]

No idea, sorry. Maybe Bin and / or Simon have some ideas here.

Thanks,
Stefan

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