[linux.git] / arch / mips / kernel / early_printk.c

/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 2002, 2003, 06, 07 Ralf Baechle ([email protected])
 * Copyright (C) 2007 MIPS Technologies, Inc.
 *   written by Ralf Baechle ([email protected])
 */
#include <linux/kernel.h>
#include <linux/console.h>
#include <linux/printk.h>
#include <linux/init.h>

#include <asm/setup.h>

extern void prom_putchar(char);

static void early_console_write(struct console *con, const char *s, unsigned n)
{
	while (n-- && *s) {
		if (*s == '\n')
			prom_putchar('\r');
		prom_putchar(*s);
		s++;
	}
}

static struct console early_console_prom = {
	.name	= "early",
	.write	= early_console_write,
	.flags	= CON_PRINTBUFFER | CON_BOOT,
	.index	= -1
};

void __init setup_early_printk(void)
{
	if (early_console)
		return;
	early_console = &early_console_prom;

	register_console(&early_console_prom);
}
Commit	Line	Data
36a88530 RB	1	/*
	2	* This file is subject to the terms and conditions of the GNU General Public
	3	* License. See the file "COPYING" in the main directory of this archive
	4	* for more details.
	5	*
	6	* Copyright (C) 2002, 2003, 06, 07 Ralf Baechle ([email protected])
	7	* Copyright (C) 2007 MIPS Technologies, Inc.
	8	* written by Ralf Baechle ([email protected])
	9	*/
d0380e6c	10	#include <linux/kernel.h>
36a88530	11	#include <linux/console.h>
d0380e6c	12	#include <linux/printk.h>
36a88530 RB	13	#include <linux/init.h>
36a88530 RB	14
07cdb784 DV	15	#include <asm/setup.h>
07cdb784 DV	16
36a88530 RB	17	extern void prom_putchar(char);
36a88530 RB	18
f7be4e75	19	static void early_console_write(struct console con, const char s, unsigned n)
36a88530 RB	20	{
	21	while (n-- && *s) {
	22	if (*s == '\n')
	23	prom_putchar('\r');
	24	prom_putchar(*s);
	25	s++;
	26	}
	27	}
	28
d0380e6c	29	static struct console early_console_prom = {
36a88530 RB	30	.name = "early",
	31	.write = early_console_write,
	32	.flags = CON_PRINTBUFFER \| CON_BOOT,
	33	.index = -1
	34	};
	35
	36	void __init setup_early_printk(void)
	37	{
d0380e6c	38	if (early_console)
36ea1d57	39	return;
d0380e6c	40	early_console = &early_console_prom;
36ea1d57	41
d0380e6c	42	register_console(&early_console_prom);
36a88530	43	}