HP 5992-3193 manual Http//lxr.linux.no/source/Documentation/ia64/serial.txt

IMPORTANT: Exactly one UART must be selected in the EFI Console-In/Out tables for a serial console to work. The UART selected in this table is ttyS0.

The format of the console parameter is as follows:

console=ttySn[,spb]

n = Serial line

where:

s

= Speed

Example: 9600, 19200, 38400, 57600, 115200 (9600 is the default if no speed is specified. 115200 is the maximum for HP UART.)

p

= Parity

Example: n (no parity, typical case)

b

= Bit Encoding.

Example: 7, 8 (8 is the typical case).

For a 115200 baud console, the following syntax is used:

console=ttyS0,115200n8

NOTE: If you are using a Linux distribution that uses kernel revision 2.6.10 or later (Post RHEL4), this method of specifying a console will not work. For more information on serial ports with these kernels, see the Linux Cross Reference website:

http://lxr.linux.no/source/Documentation/ia64/serial.txt

50 Configuring and Using a Serial Console