[J-core] ECP5 support

Goran Mahovlić goran.mahovlic at gmail.com
Tue Oct 22 08:21:35 UTC 2019

i did not write for some time, but finally we have managed to agree to go
for Crowd funding for ULX3S


On new version we have 85F with 64Mb SDRAM and ESP32 onboard (for wifi

Among lots of interesting projects (MiniMig, ScopeIO, Oberon, different
retro games)

We are already tested RISCV and managed to use LiteX to get linux running
on our board, but it would be so nice if we could get help to run J-CORE on
this board.

We even tested RMII for Ethernet PMOD and got it work to some level (linux
is assigning IP adress).

Ethernet is fully working in ScopeIO project (really amazing project for
debugging internal and external signals).

And we have some idea for USB ethernet (on linux side it is presented just
RMII) and on USB side on our board is USB ethernet device...

So if someone could please help me to start that would be really great!

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