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/*
* sercons.c
* choose the right serial device at boot time
*
* triemer 6-SEP-1998
* sercons.c is designed to allow the three different kinds
* of serial devices under the decstation world to co-exist
* in the same kernel. The idea here is to abstract
* the pieces of the drivers that are common to this file
* so that they do not clash at compile time and runtime.
*
* HK 16-SEP-1998 v0.002
* removed the PROM console as this is not a real serial
* device. Added support for PROM console in drivers/char/tty_io.c
* instead. Although it may work to enable more than one
* console device I strongly recommend to use only one.
*/
#include <asm/init.h>
#include <asm/dec/machtype.h>
#ifdef CONFIG_ZS
extern int zs_init(void);
#endif
#ifdef CONFIG_DZ
extern int dz_init(void);
#endif
#ifdef CONFIG_SERIAL_CONSOLE
#ifdef CONFIG_ZS
extern long zs_serial_console_init(long, long);
#endif
#ifdef CONFIG_DZ
extern long dz_serial_console_init(long, long);
#endif
#endif
/* rs_init - starts up the serial interface -
handle normal case of starting up the serial interface */
#ifdef CONFIG_SERIAL
__initfunc(int rs_init(void))
{
#if defined(CONFIG_ZS) && defined(CONFIG_DZ)
if (IOASIC)
return zs_init();
else
return dz_init();
#else
#ifdef CONFIG_ZS
return zs_init();
#endif
#ifdef CONFIG_DZ
return dz_init();
#endif
#endif
}
#endif
#ifdef CONFIG_SERIAL_CONSOLE
/* serial_console_init handles the special case of starting
* up the console on the serial port
*/
__initfunc(long serial_console_init(long kmem_start, long kmem_end))
{
#if defined(CONFIG_ZS) && defined(CONFIG_DZ)
if (IOASIC)
kmem_start = zs_serial_console_init(kmem_start, kmem_end);
else
kmem_start = dz_serial_console_init(kmem_start, kmem_end);
#else
#ifdef CONFIG_ZS
kmem_start = zs_serial_console_init(kmem_start, kmem_end);
#endif
#ifdef CONFIG_DZ
kmem_start = dz_serial_console_init(kmem_start, kmem_end);
#endif
#endif
return kmem_start;
}
#endif
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