1 /*
2 * Platform dependent support for HP simulator.
3 *
4 * Copyright (C) 1998, 1999, 2002 Hewlett-Packard Co
5 * David Mosberger-Tang <davidm@hpl.hp.com>
6 * Copyright (C) 1999 Vijay Chander <vijay@engr.sgi.com>
7 */
8
9 #include <linux/init.h>
10 #include <linux/kernel.h>
11 #include <linux/param.h>
12 #include <linux/string.h>
13 #include <linux/types.h>
14 #include <linux/tty.h>
15 #include <linux/kdev_t.h>
16 #include <linux/console.h>
17
18 #include <asm/delay.h>
19 #include <asm/irq.h>
20 #include <asm/pal.h>
21 #include <asm/machvec.h>
22 #include <asm/pgtable.h>
23 #include <asm/sal.h>
24 #include <asm/hpsim.h>
25
26 #include "hpsim_ssc.h"
27
28 static int simcons_init (struct console *, char *);
29 static void simcons_write (struct console *, const char *, unsigned);
30 static struct tty_driver *simcons_console_device (struct console *, int *);
31
32 static struct console hpsim_cons = {
33 .name = "simcons",
34 .write = simcons_write,
35 .device = simcons_console_device,
36 .setup = simcons_init,
37 .flags = CON_PRINTBUFFER,
38 .index = -1,
39 };
40
41 static int
simcons_init(struct console * cons,char * options)42 simcons_init (struct console *cons, char *options)
43 {
44 return 0;
45 }
46
47 static void
simcons_write(struct console * cons,const char * buf,unsigned count)48 simcons_write (struct console *cons, const char *buf, unsigned count)
49 {
50 unsigned long ch;
51
52 while (count-- > 0) {
53 ch = *buf++;
54 ia64_ssc(ch, 0, 0, 0, SSC_PUTCHAR);
55 if (ch == '\n')
56 ia64_ssc('\r', 0, 0, 0, SSC_PUTCHAR);
57 }
58 }
59
simcons_console_device(struct console * c,int * index)60 static struct tty_driver *simcons_console_device (struct console *c, int *index)
61 {
62 *index = c->index;
63 return hp_simserial_driver;
64 }
65
simcons_register(void)66 int simcons_register(void)
67 {
68 if (!ia64_platform_is("hpsim"))
69 return 1;
70
71 if (hpsim_cons.flags & CON_ENABLED)
72 return 1;
73
74 register_console(&hpsim_cons);
75 return 0;
76 }
77