1 /*
2 * OF console routines
3 *
4 * Copyright (C) Paul Mackerras 1997.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 */
11 #include <stddef.h>
12 #include "types.h"
13 #include "elf.h"
14 #include "string.h"
15 #include "stdio.h"
16 #include "page.h"
17 #include "ops.h"
18
19 #include "of.h"
20
21 static void *of_stdout_handle;
22
of_console_open(void)23 static int of_console_open(void)
24 {
25 void *devp;
26
27 if (((devp = of_finddevice("/chosen")) != NULL)
28 && (of_getprop(devp, "stdout", &of_stdout_handle,
29 sizeof(of_stdout_handle))
30 == sizeof(of_stdout_handle)))
31 return 0;
32
33 return -1;
34 }
35
of_console_write(const char * buf,int len)36 static void of_console_write(const char *buf, int len)
37 {
38 of_call_prom("write", 3, 1, of_stdout_handle, buf, len);
39 }
40
of_console_init(void)41 void of_console_init(void)
42 {
43 console_ops.open = of_console_open;
44 console_ops.write = of_console_write;
45 }
46