Your ROOT_URL in app.ini is https://src.whiteboxsystems.nl/ but you are visiting http://src.whiteboxsystems.nl/Whitebox/u-boot/src/commit/70e6428d8cbaede09691f71f69c93e0f7899fe2e/drivers/twserial 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/drivers/twserial
Masahiro Yamada 710f1d3d5f drivers: convert makefiles to Kbuild style 12 years ago
..
Makefile drivers: convert makefiles to Kbuild style 12 years ago
soft_tws.c