Generate for flash
```bash

# ecppack vhdl_blink_out.config --svf-spiflash --svf vhdl_blink.svf vhdl_blink.bit # This doesnt work

# This works
ujprog -d -j FLASH -s ../../ghdl-yosys-blink/vhdl_blink-flash.svf ../../ghdl-yosys-blink/vhdl_blink.bit
```

Then program:

```bash
openocd -f openocd/ft232.cfg -f openocd/LFE5U-25F.cfg -c "transport select jtag; init; svf vhdl_blink-flash.svf; exit"
```