For step-by-step instructions for using the SPI configuration mode with serial NOR flash, see SPI Configuration and Flash Programming in UltraScale FPGAs (XAPP1233).
For examples of how to use the SPI flash after configuration, to store non-volatile user data or to remotely update configuration images, see UltraScale FPGA Post-Configuration Access of SPI Flash Memory using STARTUPE3 (XAPP1280).