Do not quite understand that improving this script (IDC), I tested with a firmware without using the (IDA Pro loader).
smart_disasm_region (0x80100000, 0x803C0000), and located only a few functions, very few.
I do not know if this script is a complement (IDA Pro loader).
I mean, what is the procedure?
Loading a firmware with (IDA Pro loader) and then apply this script?.

Honestly, the (IDA Pro loader) does a very good job, just need a script to look and put some names of important functions.

Do not really understand the function of this script you have posted, if we have the (IDA Pro loader)