Support for console on a DECstation Z85C30 serial port

configname: CONFIG_SERIAL_ZS_CONSOLE

Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Serial drivers
└─>Support for console on a DECstation Z85C30 serial port
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
If you say Y here, it will be possible to use a serial port as the
system console (the system console is the device which receives all
kernel messages and warnings and which allows logins in single user
mode).

Note that the firmware uses ttyS1 as the serial console on the
Maxine and ttyS3 on the others using this driver.

If unsure, say Y.