/*

   * (C) Copyright 2002-2007

   * Detlev Zundel, dzu@denx.de.
   *

   * SPDX-License-Identifier:	GPL-2.0+

   */
  #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 */