We now generalize the USB communiction and abandon the 'req_ctx'
structure inherited from openpcd. Instead we use the libosmocore 'msgb'
structure to handle incoming and outgoing USB tranfers. We also use
linuxlist-based msgb-queues for each endpoint.
the default boot state should be to use the local SIM, until the user
changes it (currently only possible via entering '!' or '@' on the
serial console). The code so far had this completely inverted.
The port mapping is now as follows:
* port 1: ST12
* port 2: modem 1
* port 3: modem 2
* port 4: ST34
* port 5: modem 3
* port 6: modem 4
* port 7: daisy-chaining port
This makes sure that we'll re-enumerate on the USB, as a CPU reset
apparently doesn't automatically release the pull-up and notify the hub
that we were gone?
For some strange reason my output is garbled in both the 'screen' and
'cu' teerminal programs and 'raw' terminal (stty) mode. I fail to
understand why, but let's simply adjust the code as needed for now.
This way we can easily check with 'diff' for differences in our code and
Atmel softpack. Also, this layout is more suitable for building various
different firmware images (e.g. factory-test, dfu-loader, main
application) for a variety of different boards (simtrace, owhw, qmod).
