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tpudrv12.h: FCDEV3B goes back to being itself A while back we had the idea of a FreeCalypso modem family whereby our current fcdev3b target would some day morph into fcmodem, with multiple FC modem family products, potentially either triband or quadband, being firmware-compatible with each other and with our original FCDEV3B. But in light of the discovery of Tango modules that earlier idea is now being withdrawn: instead the already existing Tango hw is being adopted into our FreeCalypso family. Tango cannot be firmware-compatible with triband OM/FCDEV3B targets because the original quadband RFFE on Tango modules is wired in TI's original Leonardo arrangement. Because this Leonardo/Tango way is now becoming the official FreeCalypso way of driving quadband RFFEs thanks to the adoption of Tango into our FC family, our earlier idea of extending FIC's triband RFFE control signals with TSPACT5 no longer makes much sense - we will probably never produce any new hardware with that once-proposed arrangement. Therefore, that triband-or-quadband FCFAM provision is being removed from the code base, and FCDEV3B goes back to being treated the same way as CONFIG_TARGET_GTAMODEM for RFFE control purposes.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 24 Sep 2020 21:03:08 +0000
parents c9a65db8be4a
children
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The latest official firmware for Openmoko Neo1973 and Neo FreeRunner Calypso
modems is moko13 as of this writing; moko13 is FreeCalypso Magnetite Hg
changeset 286:840113655bbf built for the gtamodem target in the l1reconst
configuration.  There have been many changes in FC Magnetite since then, but
few of them affect the l1reconst config on the gtamodem target in any
noticeable way.  The few noticeable post-moko13 changes which we do have in our
current l1reconst code are not deemed important enough to justify making
another formal release for a no-longer-made hardware platform that no longer
has any real user community either.

However, we also have the new TCS2/TCS3 hybrid config in which the old version
of the G23M protocol stack from Openmoko (binary libs only, no source) has been
replaced with a newer version from TI's TCS3/LoCosto program, and this new
version is full source.  This hybrid firmware has now reached the state where
it is ready to be exercised by adventurous beta users in real-life usage.

The new hybrid fw for the gtamodem target can be built as follows:

./configure.sh gtamodem hybrid
cd build-gtamodem-hybrid; make

Then after enduring the very slow build, you can flash it with fc-loadtool:

loadtool> flash erase 0 0x250000
loadtool> flash program-bin 0 fwimage.bin

If you are brave enough to do the above, please let us know how this new modem
firmware fares when driven by QtMoko or SHR on the AP - it would definitely be
an adventure!  We would be most interested in working with developers or
maintainers of specific AP software components that are directly responsible
for talking AT commands to the modem, if there are any such developers or
maintainers still around.