blob: 02fd04d8de9894b802348fa72d835413004bfcde (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
/**
* @file
*
* @ingroup RTEMSBSPsMIPSHurricane
*
* @brief Global BSP definitions.
*/
/*
* COPYRIGHT (c) 1989-2012.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifndef LIBBSP_MIPS_HURRICANE_BSP_H
#define LIBBSP_MIPS_HURRICANE_BSP_H
/**
* @defgroup RTEMSBSPsMIPSHurricane Hurricane
*
* @ingroup RTEMSBSPsMIPS
*
* @brief Hurricane Board Support Package.
*
* @{
*/
#ifndef ASM
#include <bspopts.h>
#include <bsp/default-initial-extension.h>
#include <rtems.h>
#include <libcpu/rm5231.h>
#ifdef __cplusplus
extern "C" {
#endif
extern void WriteDisplay( char * string );
extern uint32_t mips_get_timer( void );
#define BSP_FEATURE_IRQ_EXTENSION
#define BSP_SHARED_HANDLER_SUPPORT 1
#define CPU_CLOCK_RATE_MHZ (200)
#define CLOCKS_PER_MICROSECOND ( CPU_CLOCK_RATE_MHZ ) /* equivalent to CPU clock speed in MHz */
/*
* Simple spin delay in microsecond units for device drivers.
* This is very dependent on the clock speed of the target.
*
* NOTE: This macro generates a warning like "integer constant out
* of range" which is safe to ignore. In 64 bit mode, unsigned32
* types are actually 64 bits long so that comparisons between
* unsigned32 types and pointers are valid. The warning is caused
* by code in the delay macro that is necessary for 64 bit mode.
*/
#define rtems_bsp_delay( microseconds ) \
{ \
uint32_t _end_clock = \
mips_get_timer() + microseconds * CLOCKS_PER_MICROSECOND; \
_end_clock %= 0x100000000; /* make sure result is 32 bits */ \
\
/* handle timer overflow, if necessary */ \
while ( _end_clock < mips_get_timer() ); \
\
while ( _end_clock > mips_get_timer() ); \
}
/* Constants */
#define RAM_START 0
#define RAM_END 0x100000
/*
* Prototypes for methods called from .S for dependency tracking
*/
void init_tlb(void);
void resettlb(int i);
#ifdef __cplusplus
}
#endif
#endif /* !ASM */
/** @} */
#endif /* __HURRICANE_BSP_h */
|