1 SoCFPGA EPCS/EPCQx1 mini howto:
2 - Instantiate EPCS/EPCQx1 Serial flash controller in QSys and rebuild
3 - The controller base address is the "Base" in QSys + 0x400
4 - Set MSEL[4:0]=10010 (AS Standard)
5 - Load the bitstream into FPGA, enable bridges
6 - Only then will the driver work