early_printk.c

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/*
 * Copyright (C) 2011 Richard Weinberger <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/kernel.h>
#include <linux/console.h>
#include <linux/init.h>
#include <os.h>

static void early_console_write(struct console *con, const char *s, unsigned int n)
{
    um_early_printk(s, n);
}

static struct console early_console = {
    .name = "earlycon",
    .write = early_console_write,
    .flags = CON_BOOT,
    .index = -1,
};

static int __init setup_early_printk(char *buf)
{
    register_console(&early_console);

    return 0;
}

early_param("earlyprintk", setup_early_printk);