1 /*
2  * sercons.c
3  *      choose the right serial device at boot time
4  *
5  * triemer 6-SEP-1998
6  *      sercons.c is designed to allow the three different kinds
7  *      of serial devices under the decstation world to co-exist
8  *      in the same kernel.  The idea here is to abstract
9  *      the pieces of the drivers that are common to this file
10  *      so that they do not clash at compile time and runtime.
11  *
12  * HK 16-SEP-1998 v0.002
13  *      removed the PROM console as this is not a real serial
14  *      device. Added support for PROM console in drivers/char/tty_io.c
15  *      instead. Although it may work to enable more than one
16  *      console device I strongly recommend to use only one.
17  */
18 
19 #include <linux/config.h>
20 #include <linux/init.h>
21 #include <asm/dec/machtype.h>
22 
23 #ifdef CONFIG_ZS
24 extern int zs_init(void);
25 #endif
26 
27 #ifdef CONFIG_DZ
28 extern int dz_init(void);
29 #endif
30 
31 #ifdef CONFIG_SERIAL_DEC_CONSOLE
32 
33 #ifdef CONFIG_ZS
34 extern void zs_serial_console_init(void);
35 #endif
36 
37 #ifdef CONFIG_DZ
38 extern void dz_serial_console_init(void);
39 #endif
40 
41 #endif
42 
43 /* rs_init - starts up the serial interface -
44    handle normal case of starting up the serial interface */
45 
46 #ifdef CONFIG_SERIAL_DEC
47 
rs_init(void)48 int __init rs_init(void)
49 {
50 
51 #if defined(CONFIG_ZS) && defined(CONFIG_DZ)
52     if (IOASIC)
53 	return zs_init();
54     else
55 	return dz_init();
56 #else
57 
58 #ifdef CONFIG_ZS
59     return zs_init();
60 #endif
61 
62 #ifdef CONFIG_DZ
63     return dz_init();
64 #endif
65 
66 #endif
67 }
68 
69 __initcall(rs_init);
70 
71 #endif
72 
73 #ifdef CONFIG_SERIAL_DEC_CONSOLE
74 
75 /* dec_serial_console_init handles the special case of starting
76  *   up the console on the serial port
77  */
dec_serial_console_init(void)78 void __init dec_serial_console_init(void)
79 {
80 #if defined(CONFIG_ZS) && defined(CONFIG_DZ)
81     if (IOASIC)
82 	zs_serial_console_init();
83     else
84 	dz_serial_console_init();
85 #else
86 
87 #ifdef CONFIG_ZS
88     zs_serial_console_init();
89 #endif
90 
91 #ifdef CONFIG_DZ
92     dz_serial_console_init();
93 #endif
94 
95 #endif
96 }
97 
98 #endif
99