USB stack and protocols in RTEMS-4.10?

[Emeric Vigier]

Hi RTEM'ers,

I have a devboard driven by a Leon CPU (Sparc arch):
https://en.wikipedia.org/wiki/LEON.
It runs RTEMS-4.10.99.0. I'd like to know if this version includes a
USB stack (for Sparc) and/or USB protocols (AFAIK architecture
independent?).

I saw references of libbsd:
* https://devel.rtems.org/wiki/TBR/UserManual/USBStack
* https://devel.rtems.org/ticket/1601

Questions:
* Does libbsd include a USB stack for Sparc/Leon CPU?
* What USB protocols are supported by this libbsd-rtems? I am
attentive to Mass-Storage (MSC) and Ethernet over USB (CDC, usbnet).
* The RTEMS-4.10.99 running on my board does not embed libbsd. How
much work is it (for the linux kernel developer I am) to integrate
libbsd in RTEMS-4.10.99 for Sparc?

thanks!
-- 
Emeric