u-boot environment on x86
Kim.Bondergaard at prevas.dk
Tue Mar 31 07:57:45 CEST 2020
> -----Original Message-----
> From: AKASHI Takahiro <takahiro.akashi at linaro.org>
> Sent: Tuesday, 31 March 2020 04.21
> To: Kim Bøndergaard <Kim.Bondergaard at prevas.dk>
> Cc: u-boot at lists.denx.de
> Subject: Re: u-boot environment on x86
> On Fri, Mar 27, 2020 at 01:26:09PM +0000, Kim Bøndergaard wrote:
> > I'm struggling with a u-boot as an uefi overlay on x86 (currently Qemu).
> > Basically it is working, but I'm now considering how /where to store my u-
> boot environment.
> > I need to have it stored in a device being accessible also from my Linux
> being installed by u-boot.
> > Anyone having had similar considerations.
> Can fw_printenv/fw_setenv under tools be a solution to your issue?
> (I've never used those commands though.)
> > I feel storing the environment in e.g. a FAT file is not the right solution. It is
> too vulnerable to power loss.
> > I'd prefer e.g. a raw sd partition, but u-boot has no means to read it right
> now. Making support for that would be quite easy I think.
> > Alternatively I know the UEFI provides means to store "UEFI variables".
> Anyone who knows if adding the environment as a huge UEFI variable is a
> way to go?
> Any reason to stick to UEFI here?
I feel it will be easier to get started on most x86 boards since almost all of them come with an UEFI 'bios'.
The reason for putting a u-boot on top of it, is to keep testing similar to our ARM boards.
But since you ask, I guess you have some other thoughts.
I'm open to ideas so feel free to 'speak'
> -Takahiro Akashi
> > Comments are welcome
> > Kim Bøndergaard
> > Prevas A/S
> > Team Manager / Systems Architect
> > Hedeager 3, DK-8200 Aarhus N
> > Phone +45 3315 9090
> > Mobile +45 5154 3961
> > kibo at prevas.dk
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