[Libre-soc-dev] daily kan-ban update 22apr2022

[Luke Kenneth Casson Leighton]

needed a short break from ls2.py after running into the discovery
that neither litedram nor gram follow the ECP5 technote advice
on DDR3.  therefore worked with jacob for the last few days
on big-int math analysis and instruction design.

back now onto ls2.py but using arty-a7, with the easy-to-set-up
HyperRAM, i really want to get microwatt-5.7 linux into memory
and at least reporting something on-screen even if it's "splat".

l.