Your ROOT_URL in app.ini is https://src.whiteboxsystems.nl/ but you are visiting http://src.whiteboxsystems.nl/Whitebox/u-boot/src/commit/cdb23792e864153b0c2b943bf011f10c7ba190e1/include/mtd 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/include/mtd
Masahiro Yamada 6a19cc9df0 cfi_flash: Add prototypes of overridable functions 12 years ago
..
cfi_flash.h cfi_flash: Add prototypes of overridable functions 12 years ago
mtd-abi.h
ubi-user.h Add GPL-2.0+ SPDX-License-Identifier to source files 12 years ago