Your ROOT_URL in app.ini is https://src.whiteboxsystems.nl/ but you are visiting http://src.whiteboxsystems.nl/Whitebox/u-boot/src/commit/f1249119bfc2e11f6c65f21d62e85f70aca46887/arch/sandbox 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/arch/sandbox
Simon Glass e54094f2f9 sandbox: Add string and 16-bit I/O functions 9 years ago
..
cpu
dts
include/asm
lib
Kconfig
Makefile
config.mk