[PATCH v5 3/8] bootstd: Support booting EFI where multiple options exist

[Simon Glass]

Hi Tom,

On Sat, 1 Apr 2023 at 07:02, Tom Rini <trini at konsulko.com> wrote:
>
> On Fri, Mar 31, 2023 at 10:25:56AM +1300, Simon Glass wrote:
>
> > The current EFI implementation has a strange quirk where it watches
> > loaded files and uses the last-loaded file to determine the device that
> > is being booted from.
> >
> > This is confusing with bootstd, where multiple options may exist. Even
> > loading a device tree will cause it to go wrong. There is no API for
> > passing this information, since the only entry into booting an EFI image
> > is the 'bootefi' command.
> >
> > To work around this, call efi_set_bootdev() for EFI images, if possible,
> > just before booting.
> >
> > Signed-off-by: Simon Glass <sjg at chromium.org>
>
> Shouldn't this all be a simple wrapper around the EFI Standard
> BootDeviceOrder or whatever that's called?

I think you are referring to boot manager, which isn't used here. This
is replicating the existing distroboot functionality in standard boot.
I've been trying to tease out the rules around finding the image and
the devicetree files, and this is what I've got it.

Regards,
Simon