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wdenk56f94be2002-11-05 16:35:14 +00001/*
Igor Lisitsin93470f22007-04-18 14:55:19 +04002 * (C) Copyright 2002-2007
wdenk56f94be2002-11-05 16:35:14 +00003 * Detlev Zundel, dzu@denx.de.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23#ifndef _LOGBUFF_H
24#define _LOGBUFF_H
25
26#ifdef CONFIG_LOGBUFFER
27
Igor Lisitsin93470f22007-04-18 14:55:19 +040028#define LOGBUFF_MAGIC 0xc0de4ced /* Forced by code, eh! */
wdenk9dfa8d12002-12-08 09:53:23 +000029#define LOGBUFF_LEN (16384) /* Must be 16k right now */
30#define LOGBUFF_MASK (LOGBUFF_LEN-1)
31#define LOGBUFF_OVERHEAD (4096) /* Logbuffer overhead for extra info */
32#define LOGBUFF_RESERVE (LOGBUFF_LEN+LOGBUFF_OVERHEAD)
33
Igor Lisitsin93470f22007-04-18 14:55:19 +040034/* The mapping used here has to be the same as in setup_ext_logbuff ()
35 in linux/kernel/printk */
36
37typedef struct {
38 union {
39 struct {
40 unsigned long tag;
41 unsigned long start;
42 unsigned long con;
43 unsigned long end;
44 unsigned long chars;
45 } v2;
46 struct {
47 unsigned long dummy;
48 unsigned long tag;
49 unsigned long start;
50 unsigned long size;
51 unsigned long chars;
52 } v1;
53 };
54 unsigned char buf[0];
55} logbuff_t;
56
wdenk56f94be2002-11-05 16:35:14 +000057int drv_logbuff_init (void);
wdenk9dfa8d12002-12-08 09:53:23 +000058void logbuff_init_ptrs (void);
wdenk56f94be2002-11-05 16:35:14 +000059void logbuff_log(char *msg);
60void logbuff_reset (void);
Marian Balakowicz902ce702008-05-13 15:53:29 +020061unsigned long logbuffer_base (void);
wdenk56f94be2002-11-05 16:35:14 +000062
63#endif /* CONFIG_LOGBUFFER */
64
65#endif /* _LOGBUFF_H */