Hi Mark, On Sun, 13 Mar 2022 at 09:47, Mark Kettenis <mark.kette...@xs4all.nl> wrote: > > > From: Simon Glass <s...@chromium.org> > > Date: Sun, 6 Mar 2022 05:49:43 -0700 > > > > 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. > > > > With a standard way to identify boot devices, booting become easier. It > > also should be possible to support U-Boot scripts, for backwards > > compatibility only. > > For the record. In its current state this series breaks booting on > Apple M1: > > Hit any key to stop autoboot: 0 > Flags not supported: enable CONFIG_BOOTFLOW_FULL > bootflow - Boot flows > > Usage: > bootflow scan - boot first available bootflow > > => > > I'll see if I can actually convert this board to "standard boot". But > I think this means that this breaks the majority of the boards > currently in the tree.
Ah yes, I put an error on that command when flags are given. You can enable CONFIG_BOOTFLOW_FULL to get that back. For now, 'bootflow scan' just scans and boots and does not support args. See do_bootflow_scan(). I will update the cover letter so it just says 'bootflow scan'. Regards, SImon