[PATCH v3 00/31] Initial implementation of standard boot

[Simon Glass]

Hi Michael,

On Wed, 19 Jan 2022 at 01:09, Michael Walle <michael at walle.cc> wrote:
>
>
> > The bootflow feature provide a built-in way for U-Boot to automatically
> > boot an Operating System without custom scripting and other customisation.
> > This is called 'standard boot' since it provides a standard way for
> > U-Boot to boot a distro, without scripting.
> >
> > It introduces the following concepts:
> >
> >    - bootdev - a device which can hold a distro
> >    - bootmeth - a method to scan a bootdev to find bootflows (owned by
> >                 U-Boot)
> >    - bootflow - a description of how to boot (owned by the distro)
> >
> > This series provides an implementation of these, enabled to scan for
> > bootflows from MMC, USB and Ethernet. It supports the existing distro
> > boot as well as the EFI loader flow (bootefi/bootmgr). It works
> > similiarly to the existing script-based approach, but is native to
> > U-Boot.
> >
> > With this we can boot on a Raspberry Pi 3 with just one command:
> >
> >    bootflow scan -lb
> >
> > which means to scan, listing (-l) each bootflow and trying to boot each
> > one (-b). The final patch shows this.
>
> I wanted to give this a try, but I only get the following output:
>
> => setenv boot_targets usb0
> => bootflow scan -lb
> Scanning for bootflows in all bootdevs
> Seq  Method       State   Uclass    Part  Name                      Filename
> ---  -----------  ------  --------  ----  ------------------------  ----------------
> Unknown seq 0 for label 'usb0'
> ---  -----------  ------  --------  ----  ------------------------  ----------------
> (0 bootflows, 0 valid)
>
> where usb0 is a debian installation medium.

Yes that's not working yet. Can you try an mmc device for testing?

I will take a look at USB at some point. There are about 4 remaining
to do as well as various edge cases.

Regards,
Simon