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
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
/*-------------------------------------------------------------------------+
| bsp.h v1.1 - PC386 BSP - 1997/08/07
+--------------------------------------------------------------------------+
| This include file contains definitions related to the PC386 BSP.
+--------------------------------------------------------------------------+
| (C) Copyright 1997 -
| - NavIST Group - Real-Time Distributed Systems and Industrial Automation
|
| http://pandora.ist.utl.pt
|
| Instituto Superior Tecnico * Lisboa * PORTUGAL
+--------------------------------------------------------------------------+
| Disclaimer:
|
| This file is provided "AS IS" without warranty of any kind, either
| expressed or implied.
+--------------------------------------------------------------------------+
| This code is based on:
| bsp.h,v 1.5 1995/12/19 20:07:30 joel Exp - go32 BSP
| With the following copyright notice:
| **************************************************************************
| * COPYRIGHT (c) 1989-1998.
| * On-Line Applications Research Corporation (OAR).
| * Copyright assigned to U.S. Government, 1994.
| *
| * The license and distribution terms for this file may be
| * found in found in the file LICENSE in this distribution or at
| * http://www.OARcorp.com/rtems/license.html.
| **************************************************************************
|
| $Id$
+--------------------------------------------------------------------------*/
#ifndef __BSP_H_
#define __BSP_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <rtems.h>
#include <iosupp.h>
#include <console.h>
#include <clockdrv.h>
/*-------------------------------------------------------------------------+
| Constants
+--------------------------------------------------------------------------*/
#define BSP_LIBIO_MAX_FDS 20 /* Number of libio files we want. */
/*-------------------------------------------------------------------------+
| Memory related constants.
+--------------------------------------------------------------------------*/
#ifdef RTEMS_SMALL_MEMORY /* We only have low (640K) memory. */
#define RAM_START 0x00000
#define RAM_END 0xA0000
#else /* We have at least 2048K of memory. */
#define RAM_START 0x100000
#define RAM_END 0x200000
#endif /* RTEMS_SMALL_MEMORY */
#define HEAP_SIZE 64 /* Size of libc Heap (used for malloc et al) in KBytes. */
/*-------------------------------------------------------------------------+
| Video (console) related constants.
+--------------------------------------------------------------------------*/
#define COLOUR 1 /* Assume colour console */
#if COLOUR
# define GDC_REG_PORT 0x3D4
# define GDC_VAL_PORT 0x3D5
# define TVRAM ((rtems_unsigned16 *)0xB8000)
#else
# define GDC_REG_PORT 0x3B4
# define GDC_VAL_PORT 0x3B5
# define TVRAM ((rtems_unsigned16 *)0xB0000)
#endif /* COLOUR */
/* Number of Video Lines & Columns */
#define MAX_COL 80
#ifdef RTEMS_VIDEO_80x50
#define MAX_ROW 50
#else
#define MAX_ROW 25
#endif /* RTEMS_VIDEO_80x50 */
/*-------------------------------------------------------------------------+
| Constants relating to the 8254 (or 8253) programmable interval timers.
+--------------------------------------------------------------------------*/
#define IO_TIMER1 0x40
/* Port address of the control port and timer channels */
#define TIMER_CNTR0 (IO_TIMER1 + 0) /* timer 0 counter port */
#define TIMER_CNTR1 (IO_TIMER1 + 1) /* timer 1 counter port */
#define TIMER_CNTR2 (IO_TIMER1 + 2) /* timer 2 counter port */
#define TIMER_MODE (IO_TIMER1 + 3) /* timer mode port */
#define TIMER_SEL0 0x00 /* select counter 0 */
#define TIMER_SEL1 0x40 /* select counter 1 */
#define TIMER_SEL2 0x80 /* select counter 2 */
#define TIMER_INTTC 0x00 /* mode 0, intr on terminal cnt */
#define TIMER_ONESHOT 0x02 /* mode 1, one shot */
#define TIMER_RATEGEN 0x04 /* mode 2, rate generator */
#define TIMER_SQWAVE 0x06 /* mode 3, square wave */
#define TIMER_SWSTROBE 0x08 /* mode 4, s/w triggered strobe */
#define TIMER_HWSTROBE 0x0a /* mode 5, h/w triggered strobe */
#define TIMER_LATCH 0x00 /* latch counter for reading */
#define TIMER_LSB 0x10 /* r/w counter LSB */
#define TIMER_MSB 0x20 /* r/w counter MSB */
#define TIMER_16BIT 0x30 /* r/w counter 16 bits, LSB first */
#define TIMER_BCD 0x01 /* count in BCD */
#define TIMER_TICK 1193182 /* The internal tick rate in ticks per second */
/*-------------------------------------------------------------------------+
| Define the time limits for RTEMS Test Suite test durations. Long test and
| short test duration limits are provided. These values are in seconds and
| need to be converted to ticks for the application.
+--------------------------------------------------------------------------*/
#define MAX_LONG_TEST_DURATION 300 /* 5 minutes = 300 seconds */
#define MAX_SHORT_TEST_DURATION 3 /* 3 seconds */
/*-------------------------------------------------------------------------+
| Macros
+--------------------------------------------------------------------------*/
/*-------------------------------------------------------------------------+
| Define the interrupt mechanism for Time Test 27.
| NOTE: Use a software interrupt for the i386 family.
+--------------------------------------------------------------------------*/
#define MUST_WAIT_FOR_INTERRUPT 0
#define Install_tm27_vector(handler) \
{ \
rtems_isr_entry dummy; \
rtems_interrupt_catch(handler, 0x90, &dummy); \
}
#define Cause_tm27_intr() asm volatile("int $0x90" : :);
#define Clear_tm27_intr()
#define Lower_tm27_intr()
/*-------------------------------------------------------------------------+
| Simple spin delay in microsecond units for device drivers.
| This is very dependent on the clock speed of the target.
+--------------------------------------------------------------------------*/
#define delay(_microseconds) \
{ \
rtems_unsigned32 _cnt = _microseconds; \
asm volatile ("0: nop; mov %0,%0; loop 0b" : "=c"(_cnt) : "0"(_cnt)); \
}
/*-------------------------------------------------------------------------+
| Convert microseconds to ticks and ticks to microseconds.
+--------------------------------------------------------------------------*/
#define US_TO_TICK(us) (((us)*105+44)/88)
#define TICK_TO_US(tk) (((tk)*88+52)/105)
/*-------------------------------------------------------------------------+
| External Variables.
+--------------------------------------------------------------------------*/
extern i386_IDT_slot Interrupt_descriptor_table[256];
extern i386_GDT_slot Global_descriptor_table [8192];
extern rtems_configuration_table BSP_Configuration;
/* User provided BSP configuration table. */
extern rtems_unsigned32 rtemsFreeMemStart;
/* Address of start of free memory - should be used when creating new
partitions or regions and updated afterwards. */
/*-------------------------------------------------------------------------+
| Function Prototypes.
+--------------------------------------------------------------------------*/
void _IBMPC_initVideo(void); /* from 'outch.c' */
void _IBMPC_outch (char); /* from 'outch.c' */
rtems_boolean _IBMPC_chrdy (char *); /* from 'inch.c' */
char _IBMPC_inch (void); /* from 'inch.c' */
void printk(char *fmt, ...); /* from 'printk.c' */
void rtemsReboot(void); /* from 'exit.c' */
#ifdef __cplusplus
}
#endif
#endif /* __BSP_H_ */
/* end of include file */
|
