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36a88530 RB |
1 | /* |
2 | * This file is subject to the terms and conditions of the GNU General Public | |
3 | * License. See the file "COPYING" in the main directory of this archive | |
4 | * for more details. | |
5 | * | |
6 | * Copyright (C) 2002, 2003, 06, 07 Ralf Baechle (ralf@linux-mips.org) | |
7 | * Copyright (C) 2007 MIPS Technologies, Inc. | |
8 | * written by Ralf Baechle (ralf@linux-mips.org) | |
9 | */ | |
10 | #include <linux/console.h> | |
11 | #include <linux/init.h> | |
12 | ||
07cdb784 DV |
13 | #include <asm/setup.h> |
14 | ||
36a88530 RB |
15 | extern void prom_putchar(char); |
16 | ||
ca4437d4 FBH |
17 | static void __init |
18 | early_console_write(struct console *con, const char *s, unsigned n) | |
36a88530 RB |
19 | { |
20 | while (n-- && *s) { | |
21 | if (*s == '\n') | |
22 | prom_putchar('\r'); | |
23 | prom_putchar(*s); | |
24 | s++; | |
25 | } | |
26 | } | |
27 | ||
ca4437d4 | 28 | static struct console early_console __initdata = { |
36a88530 RB |
29 | .name = "early", |
30 | .write = early_console_write, | |
31 | .flags = CON_PRINTBUFFER | CON_BOOT, | |
32 | .index = -1 | |
33 | }; | |
34 | ||
36ea1d57 FBH |
35 | static int early_console_initialized __initdata; |
36 | ||
36a88530 RB |
37 | void __init setup_early_printk(void) |
38 | { | |
36ea1d57 FBH |
39 | if (early_console_initialized) |
40 | return; | |
41 | early_console_initialized = 1; | |
42 | ||
36a88530 RB |
43 | register_console(&early_console); |
44 | } |