dany/u-boot-megous
1
0
Fork 0
mirror of https://xff.cz/git/u-boot/ synced 2025-10-22 10:31:56 +02:00
Code Issues Packages Projects Releases Wiki Activity

Adapt log buffer code to support Linux 2.6

Browse Source 
A new environment variable, "logversion", selects the log buffer
behaviour. If it is not set or set to a value other than 2, then the
old, Linux 2.4.4, behaviour is selected.

Signed-off-by: Igor Lisitsin <igor@emcraft.com>
--
This commit is contained in:
Igor Lisitsin
2007-04-18 14:55:19 +04:00
committed by Wolfgang Denk
parent a11e06965e
commit 2dc64451b4
2 changed files with 96 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
include/logbuff.h
View File

@@ -1,5 +1,5 @@
/*
* (C) Copyright 2002
* (C) Copyright 2002-2007
* Detlev Zundel, dzu@denx.de.
*
* See file CREDITS for list of people who contributed to this
@@ -25,6 +25,7 @@
#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 */
@@ -32,6 +33,29 @@
#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);