Renesas Biscayne minidriver

This sample is a minidriver for the Biscayne board. The driver initializes the serial port at a known baud rate and buffers the characters into the data area. Once the system is booted, a program can then read this data area and retrieve the buffered characters.

For this implementation we require:

• the mdriver_max value of 4KB
• data storage is required and 64KB is assumed
• hardware access to the serial port registers