[Libre-soc-dev] daily kan-ban update 22sep2020

[Luke Kenneth Casson Leighton]

On Tue, Sep 22, 2020 at 8:15 PM Tobias Platen
<libre-soc at platen-software.de> wrote:
>
> Today: reading ls180.py versa_ecp5.py and ls180soc.py after no activity for some time

these basically define the pinouts (ls180.py) and the peripherals
(ls180soc.py) for the 180nm ASIC.  versa_ecp5.py is for building
libresoc to run on a VERSA ECP5 FPGA developer board from Lattice
Semi.  the other relevant one is "sim.py" which just runs libresoc or
microwatt through verilator and a simulated suite of peripherals.

oh i got JTAG running (in sim.py) by using the litex "jtagremote"
module, i was amazed that it worked after connecting openocd to it.
the only problem being: there's not one single powerpc processor
defined in openocd!  wark-wark.

i will look tomorrow at the c4m jtag-svf code to see if it can be
adapted to "talk" to openocd-compliant network devices.

l.