I have modified the repository posted by Don Stevenson title "Xilinx Zynq FreeRTOS and lwIP demo (XAPP1026) Vivado 2014.2".The lwIP apps are a simple HTTP screen, an echo app (use telnet) and Tx and Rx performance testing. This port was tested on a Zedboard.
In order to make compatible the previous repository were modified the tcl scripts of the application examples.
https://github.com/artechedi/FreeRTOS-lwIP-Vivado-2016