1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Wrap-around code for a console using the
4 * ARC io-routines.
5 *
6 * Copyright (c) 1998 Harald Koerfgen
7 * Copyright (c) 2001 Ralf Baechle
8 * Copyright (c) 2002 Thiemo Seufer
9 */
10 #include <linux/tty.h>
11 #include <linux/major.h>
12 #include <linux/init.h>
13 #include <linux/console.h>
14 #include <linux/fs.h>
15 #include <asm/setup.h>
16 #include <asm/sgialib.h>
17
18 static void prom_console_write(struct console *co, const char *s,
19 unsigned count)
20 {
21 /* Do each character */
22 while (count--) {
23 if (*s == '\n')
24 prom_putchar('\r');
25 prom_putchar(*s++);
26 }
27 }
28
29 static int prom_console_setup(struct console *co, char *options)
30 {
31 if (prom_flags & PROM_FLAG_USE_AS_CONSOLE)
32 return 0;
33 return -ENODEV;
34 }
35
36 static struct console arc_cons = {
37 .name = "arc",
38 .write = prom_console_write,
39 .setup = prom_console_setup,
40 .flags = CON_PRINTBUFFER,
41 .index = -1,
42 };
43
44 /*
45 * Register console.
46 */
47
48 static int __init arc_console_init(void)
49 {
50 register_console(&arc_cons);
51
52 return 0;
53 }
54 console_initcall(arc_console_init);
55
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