1/*
 2 *	DECstation PROM-based early console support.
 3 *
 4 *	Copyright (C) 2004, 2007  Maciej W. Rozycki
 5 *
 6 *	This program is free software; you can redistribute it and/or
 7 *	modify it under the terms of the GNU General Public License
 8 *	as published by the Free Software Foundation; either version
 9 *	2 of the License, or (at your option) any later version.
10 */
11#include <linux/console.h>
12#include <linux/init.h>
13#include <linux/kernel.h>
14#include <linux/string.h>
15
16#include <asm/dec/prom.h>
17
18static void __init prom_console_write(struct console *con, const char *s,
19				      unsigned int c)
20{
21	char buf[81];
22	unsigned int chunk = sizeof(buf) - 1;
23
24	while (c > 0) {
25		if (chunk > c)
26			chunk = c;
27		memcpy(buf, s, chunk);
28		buf[chunk] = '\0';
29		prom_printf("%s", buf);
30		s += chunk;
31		c -= chunk;
32	}
33}
34
35static struct console promcons __initdata = {
36	.name	= "prom",
37	.write	= prom_console_write,
38	.flags	= CON_BOOT | CON_PRINTBUFFER,
39	.index	= -1,
40};
41
42void __init register_prom_console(void)
43{
44	register_console(&promcons);
45}

 1// SPDX-License-Identifier: GPL-2.0-or-later
 2/*
 3 *	DECstation PROM-based early console support.
 4 *
 5 *	Copyright (C) 2004, 2007  Maciej W. Rozycki
 
 
 
 
 
 6 */
 7#include <linux/console.h>
 8#include <linux/init.h>
 9#include <linux/kernel.h>
10#include <linux/string.h>
11
12#include <asm/dec/prom.h>
13
14static void __init prom_console_write(struct console *con, const char *s,
15				      unsigned int c)
16{
17	char buf[81];
18	unsigned int chunk = sizeof(buf) - 1;
19
20	while (c > 0) {
21		if (chunk > c)
22			chunk = c;
23		memcpy(buf, s, chunk);
24		buf[chunk] = '\0';
25		prom_printf("%s", buf);
26		s += chunk;
27		c -= chunk;
28	}
29}
30
31static struct console promcons __initdata = {
32	.name	= "prom",
33	.write	= prom_console_write,
34	.flags	= CON_BOOT | CON_PRINTBUFFER,
35	.index	= -1,
36};
37
38void __init register_prom_console(void)
39{
40	register_console(&promcons);
41}