When first hooking up a cubieboard2...

[Emmanuel Vadot]

On Wed, 14 Dec 2016 22:50:19 +0100
"John W. Kitz" <John.Kitz at xs4all.nl> wrote:

> Ian,
> 
> > On Wed, 2016-12-14 at 20:34 +0100, John W. Kitz wrote:
> > > Gents,
> > > 
> > > On Wed, 2016-12-14 at 17:26 +0100, John W. Kitz wrote:
> > > > 
> > > > > 
> > > > > Ganbold,
> > > > > 
> > > > > > 
> > > > > > 
> > > > > > > 
> > > > > > > 
> > > > > > > On Wed, Dec 14, 2016 at 5:22 AM, John W. Kitz <John.Kitz at xs4a 
> > > > > > > ll.n
> > > > > > > l> wrote:
> > > > > > > Hi,
> > > > > > > 
> > > > > > > When attaching a new cubieboard2 to a FreeBSD system for the 
> > > > > > > first time I
> > > > > > > get:
> > > > > > > 
> > > > > > > "ugen1.2: <USB Developer> at usbus1
> > > > > > > umass0: <Mass Storage> on usbus1
> > > > > > > umass0:  SCSI over Bulk-Only; quirks = 0x4000
> > > > > > > umass0:4:0: Attached to scbus4
> > > > > > > 
> > > > > > > da0 at umass-sim0 bus 0 scbus4 target 0 lun 0
> > > > > > > da0: <USB 2.0 USB Flash Driver 0100> Removable Direct Access
> > > > > > > SCSI-2
> > > > > > > device
> > > > > > > da0: 40.000MB/s transfers
> > > > > > > da0: Attempt to query device size failed: NOT READY, Medium 
> > > > > > > not present
> > > > > > > da0: quirks=0x2<NO_6_BYTE>
> > > > > > > 
> > > > > > > da1 at umass-sim0 bus 0 scbus4 target 0 lun 1
> > > > > > > da1: <USB 2.0 USB Flash Driver 0100> Removable Direct Access
> > > > > > > SCSI-2
> > > > > > > device
> > > > > > > da1: 40.000MB/s transfers
> > > > > > > da1: Attempt to query device size failed: NOT READY, Medium 
> > > > > > > not present
> > > > > > > da1: quirks=0x2<NO_6_BYTE>
> > > > > > > 
> > > > > > > da2 at umass-sim0 bus 0 scbus4 target 0 lun 2
> > > > > > > da2: <USB 2.0 USB Flash Driver 0100> Removable Direct Access
> > > > > > > SCSI-2
> > > > > > > device
> > > > > > > da2: 40.000MB/s transfers
> > > > > > > da2: Attempt to query device size failed: NOT READY, Medium 
> > > > > > > not present
> > > > > > > da2: quirks=0x2<NO_6_BYTE>"
> > > > > > > 
> > > > > > > While looking at the hardware schematic, am I correct in 
> > > > > > > assuming that
> > > > > > > da0 represents the SD card slot, and da1 and da2 represent USB 
> > > > > > > port 1 and 2 respectively?
> > > > > > > 
> > > > > > > I don't remember the details, but there are 2 USB host ports 
> > > > > > > exposed on the board, and 1 USB otg port.
> > > > > > > SD would be mmcsd0.
> > > > > Well not the answer I was looking for, but this is what I got when 
> > > > > attaching the OTG port of a new cubieboard2 (NOT in FEL mode) to a 
> > > > > USB port on >an AMD64 / FreeBSD system. Since the messages all 
> > > > > seem to refer to removable storage devices attached to the same 
> > > > > bus on which the storage medium itself doesn't seem to be present, 
> > > > > resulting in the devices being reported as not ready, the only 
> > > > > thing I could imagine were the SD card slot (I believe using a 
> > > > > converter it is possible to connect that to a USB port as well) 
> > > > > and the two other (i.e. non
> > > > > OTG)
> > > > > USB ports.
> > > > > 
> > > > > Looking into this a bit further is the difference maybe the result 
> > > > > of a different way of enumerating devices on Linux then on 
> > > > > FreeBSD?
> > > > > 
> > > > > If not, what conclusion should I draw from this?
> > > > > 
> > > > 
> > > > Your question actually doesn't make much sense.  I think the best 
> > > > answer
> > > > possible about what you see when you connect a running
> > > > 
> > > > cubieboard2 to a freebsd host is something like...
> > > > 
> > > > What you see is entirely dependent on what software is running on 
> > > > the
> > > cubieboard when you connect it, and questions about what shows up and 
> > > why > should be addressed to whomever wrote that software.
> > > 
> > > I'm not referring to what I see on the cubieboard2, but as I mentioned 
> > > to what I'm seeing on the console of an AMD64 / FreeBSD system to 
> > > which I'm attaching it.
> > > 
> > > 
> > > If freebsd is what's running on the board, then this is the right 
> > > place to
> > > ask, but you'd have to provide more info about exactly what you're > 
> > > running (where you got the image or how you built it).  If you're 
> > > running some linux image then the builder/distributor of that image 
> > > could answer >the questions.
> > > 
> > > The board is straight out of the box brand spanking new, so AFAIK 
> > > there's nothing running on it yet.
> > > 
> > > Jk.
> 
> > What you are seeing on the freebsd console is the devices that the
> software running on the cubieboard provides.  Even fresh out of the box, it
> is > running something (presumably some linux or android distro that gets
> put into the nand flash at the factory).
> 
> > This has nothing to do with freebsd.  You'd see the same thing if you
> plugged it into a windows system.
> 
> Thanks for pointing that out; I was already aware of that, but my question
> was: which storage devices on the board do da0, da1 and da2 represent 'as
> seen', if you will, from and on the FreeBSD system to which it is attached?
> 
> Regards, Jk.

 Probably none.
 What the software running on the board is doing is called usb gadget
mode. It uses the OTG port to act as a device and it seems that it act
as some multiple usb disk. But this doesn't mean that the device it's
exporting match some device on the board. It could be directory or file
on the filesystem.

-- 
Emmanuel Vadot <manu at bidouilliste.com> <manu at freebsd.org>