xref: /openbmc/linux/arch/openrisc/include/asm/serial.h (revision 63dc02bd)
1 /*
2  * OpenRISC Linux
3  *
4  * Linux architectural port borrowing liberally from similar works of
5  * others.  All original copyrights apply as per the original source
6  * declaration.
7  *
8  * OpenRISC implementation:
9  * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
10  * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
11  * et al.
12  *
13  * This program is free software; you can redistribute it and/or modify
14  * it under the terms of the GNU General Public License as published by
15  * the Free Software Foundation; either version 2 of the License, or
16  * (at your option) any later version.
17  */
18 
19 #ifndef __ASM_OPENRISC_SERIAL_H
20 #define __ASM_OPENRISC_SERIAL_H
21 
22 #ifdef __KERNEL__
23 
24 #include <asm/cpuinfo.h>
25 
26 /* There's a generic version of this file, but it assumes a 1.8MHz UART clk...
27  * this, on the other hand, assumes the UART clock is tied to the system
28  * clock... 8250_early.c (early 8250 serial console) actually uses this, so
29  * it needs to be correct to get the early console working.
30  */
31 
32 #define BASE_BAUD (cpuinfo.clock_frequency/16)
33 
34 #endif /* __KERNEL__ */
35 
36 #endif /* __ASM_OPENRISC_SERIAL_H */
37