Re: U-Boot for x86 BIOS systems

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On Mon, May 22, 2023 at 6:57 AM Gerd Hoffmann <kraxel@xxxxxxxxxx> wrote:
>
>   Hi,
>
> > But could we use U-Boot to fill in this gap so these systems still
> > work? We'd then treat x86 like ARM (if no UEFI, use U-Boot UEFI).
>
> How does u-boot handle EFI variables in that case?
>

Unless the variable store is disabled, I believe it's written to a
file? That seems to be how it works on ARM.

> How does u-boot do storage access in that case?  Go call BIOS INT13h?
> Or use its own device drivers?
>
> Last time I checked there have been a few gaps, no virtio-scsi driver
> for example.
>

I don't know. I imagine with U-Boot using a similar build process to
the kernel that it does have its own equivalent of drivers for
platform configuration.



-- 
真実はいつも一つ!/ Always, there's only one truth!
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