[people/ms/u-boot.git] / include / logbuff.h

/*
 * (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)

/* 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 */
Commit	Line	Data
56f94be3	1	/*
2dc64451	2	* (C) Copyright 2002-2007
56f94be3 WD	3	* 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
2dc64451	28	#define LOGBUFF_MAGIC 0xc0de4ced /* Forced by code, eh! */
228f29ac WD	29	#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
2dc64451 IL	34	/* The mapping used here has to be the same as in setup_ext_logbuff ()
	35	in linux/kernel/printk */
	36
	37	typedef 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
56f94be3	57	int drv_logbuff_init (void);
228f29ac	58	void logbuff_init_ptrs (void);
56f94be3 WD	59	void logbuff_log(char *msg);
56f94be3 WD	60	void logbuff_reset (void);
95d449ad	61	unsigned long logbuffer_base (void);
56f94be3 WD	62
	63	#endif /* CONFIG_LOGBUFFER */
	64
	65	#endif /* _LOGBUFF_H */