/*
 * 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) 2014 Finn Thain
 */

#include <linux/kernel.h>
#include <linux/console.h>
#include <linux/init.h>
#include <linux/string.h>
#include <asm/setup.h>


#include "../mvme147/mvme147.h"
#include "../mvme16x/mvme16x.h"

asmlinkage void __init debug_cons_nputs(struct console *c, const char *s, unsigned int n);

static struct console early_console_instance = {
        .name  = "debug",
        .flags = CON_PRINTBUFFER | CON_BOOT,
        .index = -1
};

static int __init setup_early_printk(char *buf)
{
        if (early_console || buf)
                return 0;

        if (MACH_IS_MVME147)
                early_console_instance.write = mvme147_scc_write;
        else if (MACH_IS_MVME16x)
                early_console_instance.write = mvme16x_cons_write;
        else
                early_console_instance.write = debug_cons_nputs;
        early_console = &early_console_instance;
        register_console(early_console);

        return 0;
}
early_param("earlyprintk", setup_early_printk);

static int __init unregister_early_console(void)
{
        /*
         * debug_cons_nputs() defined in arch/m68k/kernel/head.S cannot be
         * called after init sections are discarded (for platforms that use it).
         */
        if (early_console && early_console->write == debug_cons_nputs)
                return unregister_console(early_console);

        return 0;
}
late_initcall(unregister_early_console);