1 // SPDX-License-Identifier: GPL-2.0-only
3 * linux/arch/arm/kernel/early_printk.c
8 #include <linux/kernel.h>
9 #include <linux/console.h>
10 #include <linux/init.h>
11 #include <linux/string.h>
13 extern void printascii(const char *);
15 static void early_write(const char *s, unsigned n)
19 unsigned l = min(n, sizeof(buf)-1);
28 static void early_console_write(struct console *con, const char *s, unsigned n)
33 static struct console early_console_dev = {
35 .write = early_console_write,
36 .flags = CON_PRINTBUFFER | CON_BOOT,
40 static int __init setup_early_printk(char *buf)
42 early_console = &early_console_dev;
43 register_console(&early_console_dev);
47 early_param("earlyprintk", setup_early_printk);