Your ROOT_URL in app.ini is https://src.whiteboxsystems.nl/ but you are visiting http://src.whiteboxsystems.nl/Whitebox/u-boot/src/commit/c89e79d4199cf76f3a018c230d5705df7d2225c6/board/xilinx You should set ROOT_URL correctly, otherwise the web may not work correctly.
upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
 
 
 
 
 
 
u-boot/board/xilinx
Michal Simek d9f317fd0d ARM: zynq: Read memory size setting from DT 9 years ago
..
microblaze-generic
ppc405-generic
ppc440-generic ppc: xilinx-ppc440-generic: Wire LL_TEMAC driver 9 years ago
zynq ARM: zynq: Read memory size setting from DT 9 years ago
zynqmp