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/*
* 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>
asmlinkage void __init debug_cons_nputs(const char *s, unsigned n);
static void debug_cons_write(struct console *c,
const char *s, unsigned n)
{
debug_cons_nputs(s, n);
}
static struct console early_console_instance = {
.name = "debug",
.write = debug_cons_write,
.flags = CON_PRINTBUFFER | CON_BOOT,
.index = -1
};
static int __init setup_early_printk(char *buf)
{
/* MVME16x registers an early console after interrupt setup. */
if (MACH_IS_MVME16x)
return 0;
if (early_console || buf)
return 0;
early_console = &early_console_instance;
register_console(early_console);
return 0;
}
early_param("earlyprintk", setup_early_printk);
/*
* debug_cons_nputs() defined in arch/m68k/kernel/head.S cannot be called
* after init sections are discarded (for platforms that use it).
*/
#if !(defined(CONFIG_SUN3) || defined(CONFIG_M68360) || \
defined(CONFIG_M68000) || defined(CONFIG_COLDFIRE))
static int __init unregister_early_console(void)
{
if (!early_console)
return 0;
return unregister_console(early_console);
}
late_initcall(unregister_early_console);
#endif
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