Monitor Rock64 serial console with PineA64

[MarkHaysHarris777]

Thanks for the info.  I tried the command line baud setting to minicom 2.7 ( -b 1500000), and that worked.  I was still getting garbage, so tried a different USB to serial adapter (now using a Softway board), and I'm getting valid console output.  I'm half expecting to see random garbage though, due to the high baud rate.

I still would like to know why such a high baud rate was chosen, and any pointers to rebuilding the code Ayufan has graciously provided, so I can build my own version with a 115200 console, for better compatibility with all USB to serial devices and apps.

1.5M  is becoming the standard baud rate for console;  even 115200 is not fast enough to keep up with the console in many cases.