initial commit

BOARDS/run_gowin.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+# --- CONFIGURATION ---
+PROJECTNAME=SOC
+DEVICE='GW2A-LV18PG256C8/I7'
+BOARD='tangprimer20k'
+BOARD_FREQ=27
+CPU_FREQ=50
+VERILOGS=$1
+
+# --- Synthesis with Yosys ---
+yosys -q -DPRIMER20K -DBOARD_FREQ=$BOARD_FREQ -DCPU_FREQ=$CPU_FREQ -D INV_BTN=0 -p "
+    read_verilog $VERILOGS;
+    synth_gowin -top $PROJECTNAME -json $PROJECTNAME.json -family gw2a" || exit 1
+
+# --- Placement and Routing with nextpnr-himbaechel ---
+nextpnr-himbaechel \
+    --json $PROJECTNAME.json \
+    --write $PROJECTNAME"_pnr.json" \
+    --device $DEVICE \
+    --vopt cst=BOARDS/$BOARD.cst \
+    --vopt family=GW2A-18 \
+    --freq $BOARD_FREQ || exit 1
+
+# --- Bitstream Packing with gowin_pack ---
+gowin_pack -d $DEVICE -o $PROJECTNAME.fs $PROJECTNAME"_pnr.json" || exit 1
+
+# --- Programming with openFPGALoader ---
+openFPGALoader -b tangprimer20k $PROJECTNAME.fs || exit 1
+