Calibrating delay loop... message after some errors on the Aria G25 debug port.
The reason of is problem is well explained on this post and it can be caused intentionally typing
# hwclock -w
and removing the power supply before the command ends. The problem occours only if the RTC backup battery is present.
To solve it you have to replace the AriaBoot executable file (boot.bin) on the first partition if the bootable microSD card with one of these files:
Renaming one of it in boot.bin.
The changes on AriaBoot source file are available on GitHub.