[c46f46]: arch / m68k / kernel / early_printk.c  Maximize  Restore  History

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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>
extern void mvme16x_cons_write(struct console *co,
const char *str, unsigned count);
asmlinkage void __init debug_cons_nputs(const char *s, unsigned n);
static void __ref debug_cons_write(struct console *c,
const char *s, unsigned n)
{
#if !(defined(CONFIG_SUN3) || defined(CONFIG_M68360) || \
defined(CONFIG_M68000) || defined(CONFIG_COLDFIRE))
if (MACH_IS_MVME16x)
mvme16x_cons_write(c, s, n);
else
debug_cons_nputs(s, n);
#endif
}
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)
{
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 || MACH_IS_MVME16x)
return 0;
return unregister_console(early_console);
}
late_initcall(unregister_early_console);
#endif

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