[PATCH v3 00/20] Convert extension support to UCLASS and adds its support to boot flows

[Kory Maincent]

On Sun, 19 Oct 2025 10:48:37 -0600
Tom Rini <trini at konsulko.com> wrote:

> On Sun, Oct 19, 2025 at 02:05:51PM +0100, Simon Glass wrote:
> > Hi Kory,
> > 
> > On Mon, 13 Oct 2025 at 14:32, Kory Maincent (TI.com)
> > <kory.maincent at bootlin.com> wrote:  
> > >
> > > This series converts the extension board framework to use UCLASS as
> > > requested by Simon Glass, then adds extension support to pxe_utils
> > > and bootmeth_efi (not tested) to enable extension boards devicetree load
> > > in the standard boot process.
> > >
> > > I can't test the imx8 extension scan enabled by the
> > > imx8mm-cl-iot-gate_defconfig as I don't have this board.
> > > I also can't test the efi bootmeth change as I don't have such board.  
> > 
> > You can test this with sandbox, using one of the bootmeth tests,
> > perhaps. Let me know if you need help with this.  
> 
> But the question is, does the real hardware platform work before/after
> this, not does the sandbox test still work before/after this.

It seems the bootlflow scan is not working on the sandbox on next branch.
Is this issue known?

=> bootflow scan -l 
Scanning for bootflows in all bootdevs
Seq  Method       State   Uclass    Part  Name                      Filename
---  -----------  ------  --------  ----  ------------------------
---------------- Scanning global bootmeth 'efi_mgr':
     efi_var_to_file() Cannot persist EFI variables without system partition
   efi_tcg2_register() Missing TPMv2 device for EFI_TCG_PROTOCOL
    efi_rng_register() Missing RNG device for EFI_RNG_PROTOCOL
Hunting with: simple_bus
Found 2 extension board(s).
Hunting with: mmc
Hunting with: nvme
Hunting with: qfw
Hunting with: scsi
scanning bus for devices...
Hunting with: spi_flash
Hunting with: virtio
Scanning bootdev 'qfw_sandbox.bootdev':
[1]    487232 segmentation fault (core dumped)  ./u-boot

Regards,
-- 
Köry Maincent, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com