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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 LT |
2 | /* |
3 | * Platform dependent support for HP simulator. | |
4 | * | |
5 | * Copyright (C) 1998, 1999, 2002 Hewlett-Packard Co | |
6 | * David Mosberger-Tang <davidm@hpl.hp.com> | |
7 | * Copyright (C) 1999 Vijay Chander <vijay@engr.sgi.com> | |
8 | */ | |
1da177e4 LT |
9 | |
10 | #include <linux/init.h> | |
11 | #include <linux/kernel.h> | |
12 | #include <linux/param.h> | |
13 | #include <linux/string.h> | |
14 | #include <linux/types.h> | |
15 | #include <linux/tty.h> | |
16 | #include <linux/kdev_t.h> | |
17 | #include <linux/console.h> | |
18 | ||
19 | #include <asm/delay.h> | |
20 | #include <asm/irq.h> | |
21 | #include <asm/pal.h> | |
22 | #include <asm/machvec.h> | |
23 | #include <asm/pgtable.h> | |
24 | #include <asm/sal.h> | |
8b713c67 | 25 | #include <asm/hpsim.h> |
1da177e4 LT |
26 | |
27 | #include "hpsim_ssc.h" | |
28 | ||
29 | static int simcons_init (struct console *, char *); | |
30 | static void simcons_write (struct console *, const char *, unsigned); | |
31 | static struct tty_driver *simcons_console_device (struct console *, int *); | |
32 | ||
8b713c67 | 33 | static struct console hpsim_cons = { |
1da177e4 LT |
34 | .name = "simcons", |
35 | .write = simcons_write, | |
36 | .device = simcons_console_device, | |
37 | .setup = simcons_init, | |
38 | .flags = CON_PRINTBUFFER, | |
39 | .index = -1, | |
40 | }; | |
41 | ||
42 | static int | |
43 | simcons_init (struct console *cons, char *options) | |
44 | { | |
45 | return 0; | |
46 | } | |
47 | ||
48 | static void | |
49 | simcons_write (struct console *cons, const char *buf, unsigned count) | |
50 | { | |
51 | unsigned long ch; | |
52 | ||
53 | while (count-- > 0) { | |
54 | ch = *buf++; | |
55 | ia64_ssc(ch, 0, 0, 0, SSC_PUTCHAR); | |
56 | if (ch == '\n') | |
57 | ia64_ssc('\r', 0, 0, 0, SSC_PUTCHAR); | |
58 | } | |
59 | } | |
60 | ||
61 | static struct tty_driver *simcons_console_device (struct console *c, int *index) | |
62 | { | |
1da177e4 LT |
63 | *index = c->index; |
64 | return hp_simserial_driver; | |
65 | } | |
8b713c67 PC |
66 | |
67 | int simcons_register(void) | |
68 | { | |
69 | if (!ia64_platform_is("hpsim")) | |
70 | return 1; | |
71 | ||
72 | if (hpsim_cons.flags & CON_ENABLED) | |
73 | return 1; | |
74 | ||
75 | register_console(&hpsim_cons); | |
76 | return 0; | |
77 | } |