Re: USBDMSC emulated device does not work on FreeBSD

On Fri, 12 Nov 2021 11:54:24 +0100
Hans Petter Selasky <hps@selasky.org> wrote:

> On 11/12/21 09:59, Milan Obuch wrote:
> > Hi,
> > 
> > recently I got PolarFire SoC FPGA based board I am working on
> > FreeBSD support for. As a non volatile storage, it has eNVM used
> > for HSS and eMMC as disk device.
> > 
> > After reset, first thing run is HSS, which loads U-Boot from eMMC
> > and usual boot process continues. It is possible, however, break the
> > process and issue 'usbdmsc' command on HSS prompt. eMMC is then
> > presented as USB disk.
> > 
> > This works on Windows, and one or more (depends on partition table
> > used on eMMC) disk drives are presented to system. It is possible
> > to use balenaEtcher software to put some image there and do
> > something with it.
> > 
> > This does not work on FreeBSD. I see device being attached after
> > starting 'usbdmsc' command, but no USB drive is being created. Could
> > someone help me to diagnose this? Which command output (maybe
> > 'usbconfig <something>') could offer some hint?
> > 
> > Regards,
> > Milan
> >   
> 
> Hi,
> 
> Can you share what is printed in dmesg?
> 
> This command may also be useful. It will show which kernel drivers
> are attached to your device.
> 
> usbconfig show_ifdrv
> 
> --HPS
> 

After issuing command 'usbdmsc' on HSS prompt, I see just

kernel: ugen1.3: <Microchip Inc PolarFireSoc-FlashDrive> at usbus1

line in console (and later in dmesg). Relevant line in output of
'usbconfig show_ifdrv' command is

ugen1.3: <Microchip Inc PolarFireSoc-FlashDrive> at usbus1, cfg=255 md=HOST spd=HIGH (480Mbps) pwr=ON (100mA)

which does not tell much, I think. Anything else I can try to get
something meaningfull? Note, my FreeBSD box is rather old, 11.4-STABLE,
test done on 12.2-STABLE was basically the same.

Regards,
Milan