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/*
* (C) Copyright 2002-2007
* Detlev Zundel, dzu@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifndef _LOGBUFF_H
#define _LOGBUFF_H
#ifdef CONFIG_LOGBUFFER
#define LOGBUFF_MAGIC 0xc0de4ced /* Forced by code, eh! */
#define LOGBUFF_LEN (16384) /* Must be 16k right now */
#define LOGBUFF_MASK (LOGBUFF_LEN-1)
#define LOGBUFF_OVERHEAD (4096) /* Logbuffer overhead for extra info */
#define LOGBUFF_RESERVE (LOGBUFF_LEN+LOGBUFF_OVERHEAD)
#define LOGBUFF_INITIALIZED (1<<31)
/* The mapping used here has to be the same as in setup_ext_logbuff ()
in linux/kernel/printk */
typedef struct {
union {
struct {
unsigned long tag;
unsigned long start;
unsigned long con;
unsigned long end;
unsigned long chars;
} v2;
struct {
unsigned long dummy;
unsigned long tag;
unsigned long start;
unsigned long size;
unsigned long chars;
} v1;
};
unsigned char buf[0];
} logbuff_t;
int drv_logbuff_init (void);
void logbuff_init_ptrs (void);
void logbuff_log(char *msg);
void logbuff_reset (void);
unsigned long logbuffer_base (void);
#endif /* CONFIG_LOGBUFFER */
#endif /* _LOGBUFF_H */
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