File: console.c

package info (click to toggle)
linux 5.10.46-4
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,191,996 kB
  • sloc: ansic: 19,502,768; asm: 263,759; sh: 73,960; makefile: 44,724; perl: 34,644; python: 32,387; cpp: 6,070; yacc: 4,755; lex: 2,742; awk: 1,214; ruby: 25; sed: 5
file content (41 lines) | stat: -rw-r--r-- 815 bytes parent folder | download | duplicates (40)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *	DECstation PROM-based early console support.
 *
 *	Copyright (C) 2004, 2007  Maciej W. Rozycki
 */
#include <linux/console.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/string.h>

#include <asm/dec/prom.h>

static void __init prom_console_write(struct console *con, const char *s,
				      unsigned int c)
{
	char buf[81];
	unsigned int chunk = sizeof(buf) - 1;

	while (c > 0) {
		if (chunk > c)
			chunk = c;
		memcpy(buf, s, chunk);
		buf[chunk] = '\0';
		prom_printf("%s", buf);
		s += chunk;
		c -= chunk;
	}
}

static struct console promcons __initdata = {
	.name	= "prom",
	.write	= prom_console_write,
	.flags	= CON_BOOT | CON_PRINTBUFFER,
	.index	= -1,
};

void __init register_prom_console(void)
{
	register_console(&promcons);
}