Configure the bit positions to generate UE Error # echo 4 > /sys/devices/system/edac/zynqmp_ocm/inject_fault_count # echo 7 > /sys/devices/system/edac/zynqmp_ocm/inject_uebitpos0 # echo 32 > /sys/devices/system/edac/zynqmp_ocm/inject_uebitpos1 Write any data to any OCM Memory area, so at the time of writing data the controller injects errors and will report when you read back the location # devmem 0xfffc0000 64 0xFFFFFFFFFFFF # devmem 0xfffc0000 [ 64.973665] Unhandled fault: synchronous external abort (0x92999219) at 0x0000007f9182b000) [ 64.973674] EDAC DEVICE0: UE: zynqmp_ocm instance: zynqmp_ocm0 block: zynqmp_ocm0 ' OCM ECC error type :UE Addr: [0xFFFC0000] Fault Data[31:0]: [0xFFFFFF7F] Fault Data[63:32]: [0xFFFE]' 0x0000FFFEFFFFFF7F here we have written 0xFFFFFFFFFFFF and configured bitposition0 as 7 and bitposition1 as 32, so a ctual Data Written: 0xFFFFFFFFFFFF Fault Data : 0xFFFEFFFFFF7F