sandbox: Add a simple sound driver

[karo-tx-uboot.git] / include / logbuff.h

diff --git a/include/logbuff.h b/include/logbuff.h
index 3acfc18a78272ea1a7aeef49510b8861244ea2af..625feb9f95a09491477a8c42a6f65f82d130de96 100644 (file)
--- a/include/logbuff.h
+++ b/include/logbuff.h
@@ -1,41 +1,48 @@
 /*
- * (C) Copyright 2002
+ * (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
+ * 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)
 
-#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 */