To boot from an SD card:
1.Store a valid Zynq UltraScale+ RFSoC boot image file on to an SD card (and then plug the SD card into ZCU111 board socket J100).
2.Set the boot mode pins SW6 [3:0] PS_MODE[3:0] as indicated in Table: Switch SW6 Configuration Option Settings for SD.
3.Either power-cycle or press the power-on reset (POR) pushbutton. SW6 is callout 46 in This Figure.
See the Zynq UltraScale+ Device Technical Reference Manual (UG1085) [Ref 3] for more information about Zynq UltraScale+ RFSoC configuration options.