openFPGALoader/doc/gowin.md

Gowin notes

GOWIN GW1N (Trenz TEC0117, Sipeed Tang Nano, Sipeed Tang Nano 4K, Honeycomb and RUNBER)

.fs file is the default format generated by Gowin IDE, so nothing special must be done to generates this file.

Since the same file is used for SRAM and Flash a CLI argument is used to specify the destination.

Flash SRAM

with -m

openFPGALoader -m -b BOARD_NAME impl/pnr/*.fs

where BOARD_NAME is:

• tec0117
• tangnano
• *tangnano4k"
• runber

Flash (only with Trenz TEC0117 and runber):

with -f

file load:

openFPGALoader -f -b BOARD_NAME impl/pnr/*.fs

where BOARD_NAME is:

• tec0117
• runber

It's possible to flash external SPI Flash (connected to MSPI) in bscan mode by using --external-flash instead of -f