blob: 625feb9f95a09491477a8c42a6f65f82d130de96
1 | /* |
2 | * (C) Copyright 2002-2007 |
3 | * Detlev Zundel, dzu@denx.de. |
4 | * |
5 | * SPDX-License-Identifier: GPL-2.0+ |
6 | */ |
7 | #ifndef _LOGBUFF_H |
8 | #define _LOGBUFF_H |
9 | |
10 | #ifdef CONFIG_LOGBUFFER |
11 | |
12 | #define LOGBUFF_MAGIC 0xc0de4ced /* Forced by code, eh! */ |
13 | #define LOGBUFF_LEN (16384) /* Must be 16k right now */ |
14 | #define LOGBUFF_MASK (LOGBUFF_LEN-1) |
15 | #define LOGBUFF_OVERHEAD (4096) /* Logbuffer overhead for extra info */ |
16 | #define LOGBUFF_RESERVE (LOGBUFF_LEN+LOGBUFF_OVERHEAD) |
17 | |
18 | /* The mapping used here has to be the same as in setup_ext_logbuff () |
19 | in linux/kernel/printk */ |
20 | |
21 | typedef struct { |
22 | union { |
23 | struct { |
24 | unsigned long tag; |
25 | unsigned long start; |
26 | unsigned long con; |
27 | unsigned long end; |
28 | unsigned long chars; |
29 | } v2; |
30 | struct { |
31 | unsigned long dummy; |
32 | unsigned long tag; |
33 | unsigned long start; |
34 | unsigned long size; |
35 | unsigned long chars; |
36 | } v1; |
37 | }; |
38 | unsigned char buf[0]; |
39 | } logbuff_t; |
40 | |
41 | int drv_logbuff_init (void); |
42 | void logbuff_init_ptrs (void); |
43 | void logbuff_log(char *msg); |
44 | void logbuff_reset (void); |
45 | unsigned long logbuffer_base (void); |
46 | |
47 | #endif /* CONFIG_LOGBUFFER */ |
48 | |
49 | #endif /* _LOGBUFF_H */ |
50 |