1 | /* bsp.h |
---|
2 | * |
---|
3 | * This include file definitions related to the Force CPU-386 board. |
---|
4 | * |
---|
5 | * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. |
---|
6 | * On-Line Applications Research Corporation (OAR). |
---|
7 | * All rights assigned to U.S. Government, 1994. |
---|
8 | * |
---|
9 | * This material may be reproduced by or for the U.S. Government pursuant |
---|
10 | * to the copyright license under the clause at DFARS 252.227-7013. This |
---|
11 | * notice must appear in all copies of this file and its derivatives. |
---|
12 | * |
---|
13 | * $Id$ |
---|
14 | */ |
---|
15 | |
---|
16 | #ifndef __FORCE386_h |
---|
17 | #define __FORCE386_h |
---|
18 | |
---|
19 | #ifdef __cplusplus |
---|
20 | extern "C" { |
---|
21 | #endif |
---|
22 | |
---|
23 | #include <rtems.h> |
---|
24 | #include <iosupp.h> |
---|
25 | #include <console.h> |
---|
26 | #include <clockdrv.h> |
---|
27 | |
---|
28 | /* |
---|
29 | * Define the time limits for RTEMS Test Suite test durations. |
---|
30 | * Long test and short test duration limits are provided. These |
---|
31 | * values are in seconds and need to be converted to ticks for the |
---|
32 | * application. |
---|
33 | * |
---|
34 | */ |
---|
35 | |
---|
36 | #define MAX_LONG_TEST_DURATION 300 /* 5 minutes = 300 seconds */ |
---|
37 | #define MAX_SHORT_TEST_DURATION 3 /* 3 seconds */ |
---|
38 | |
---|
39 | /* |
---|
40 | * Define the interrupt mechanism for Time Test 27 |
---|
41 | * |
---|
42 | * NOTE: Use a software interrupt for the i386. |
---|
43 | */ |
---|
44 | |
---|
45 | #define MUST_WAIT_FOR_INTERRUPT 0 |
---|
46 | |
---|
47 | #define Install_tm27_vector( handler ) set_vector( (handler), 0x90, 1 ) |
---|
48 | |
---|
49 | #define Cause_tm27_intr() asm volatile( "int $0x90" : : ); |
---|
50 | |
---|
51 | #define Clear_tm27_intr() |
---|
52 | |
---|
53 | #define Lower_tm27_intr() |
---|
54 | |
---|
55 | /* |
---|
56 | * Simple spin delay in microsecond units for device drivers. |
---|
57 | * This is very dependent on the clock speed of the target. |
---|
58 | */ |
---|
59 | |
---|
60 | #define delay( _microseconds ) \ |
---|
61 | { \ |
---|
62 | rtems_unsigned32 _counter; \ |
---|
63 | \ |
---|
64 | _counter = (_microseconds); \ |
---|
65 | \ |
---|
66 | asm volatile ( "0: nop;" \ |
---|
67 | " mov %0,%0 ;" \ |
---|
68 | " loop 0b" : "=c" (_counter) \ |
---|
69 | : "0" (_counter) \ |
---|
70 | ); \ |
---|
71 | \ |
---|
72 | } |
---|
73 | |
---|
74 | /* Constants */ |
---|
75 | |
---|
76 | #define RAM_START 0 |
---|
77 | #define RAM_END 0x100000 |
---|
78 | |
---|
79 | /* I/O addressing */ |
---|
80 | |
---|
81 | /* |
---|
82 | * The following determines whether Port B or the Console should |
---|
83 | * be used for test I/O. Setting ONE (and only ONE) of these to 1 |
---|
84 | * enables I/O on that port. |
---|
85 | * |
---|
86 | * PORT A - DUSCC MC68562 Channel A |
---|
87 | * PORT B - DUSCC MC68562 Channel B |
---|
88 | * PORT C - MFP MC68901 Channel (*** FORCEbug console ***) |
---|
89 | */ |
---|
90 | |
---|
91 | #define PORTB 1 /* use port b as test port */ |
---|
92 | #define PORTC 0 /* use console port as test port */ |
---|
93 | |
---|
94 | #if ( PORTB == 1 ) |
---|
95 | #define TX_STATUS 0x1b6 /* DUSCC General Status Register */ |
---|
96 | #define RX_STATUS 0x1b6 /* DUSCC General Status Register */ |
---|
97 | #define TX_BUFFER 0x1e0 /* DUSCC Transmitter Channel B */ |
---|
98 | #define RX_BUFFER 0x1e8 /* DUSCC Receiver Channel B */ |
---|
99 | #define Is_tx_ready( _status ) ( (_status) & 0x20 ) |
---|
100 | #define Is_rx_ready( _status ) ( (_status) & 0x10 ) |
---|
101 | #endif |
---|
102 | |
---|
103 | #if ( PORTC == 1 ) |
---|
104 | #define TX_STATUS 0x12c /* MFP Transmit Status Register */ |
---|
105 | #define RX_STATUS 0x12a /* MFP Receive Status Register */ |
---|
106 | #define TX_BUFFER 0x12e /* MFP Transmitter Channel */ |
---|
107 | #define RX_BUFFER 0x12e /* MFP Receiver Channel */ |
---|
108 | #define Is_tx_ready( _status ) ( (_status) & 0x80 ) |
---|
109 | #define Is_rx_ready( _status ) ( (_status) & 0x80 ) |
---|
110 | #endif |
---|
111 | |
---|
112 | /* Timer constants */ |
---|
113 | |
---|
114 | #define IERA 0x106 /* Interrupt Enable Register A */ |
---|
115 | #define IMRA 0x112 /* Interrupt Mask Register A */ |
---|
116 | #define TACR 0x118 /* Timer A Control Register */ |
---|
117 | #define TADR 0x11e /* Timer A Data Register */ |
---|
118 | |
---|
119 | #define IERB 0x108 /* Interrupt Enable Register B */ |
---|
120 | #define TBCR 0x11a /* Timer B Control Register */ |
---|
121 | #define TBDR 0x120 /* Timer B Data Register */ |
---|
122 | |
---|
123 | /* Structures */ |
---|
124 | |
---|
125 | #ifdef F386_INIT |
---|
126 | #undef BSP_EXTERN |
---|
127 | #define BSP_EXTERN |
---|
128 | #else |
---|
129 | #undef BSP_EXTERN |
---|
130 | #define BSP_EXTERN extern |
---|
131 | #endif |
---|
132 | |
---|
133 | /* |
---|
134 | * Device Driver Table Entries |
---|
135 | */ |
---|
136 | |
---|
137 | /* |
---|
138 | * NOTE: Use the standard Console driver entry |
---|
139 | */ |
---|
140 | |
---|
141 | /* |
---|
142 | * NOTE: Use the standard Clock driver entry |
---|
143 | */ |
---|
144 | |
---|
145 | /* |
---|
146 | * How many libio files we want |
---|
147 | */ |
---|
148 | |
---|
149 | #define BSP_LIBIO_MAX_FDS 20 |
---|
150 | |
---|
151 | /* miscellaneous stuff assumed to exist */ |
---|
152 | |
---|
153 | extern rtems_configuration_table BSP_Configuration; |
---|
154 | |
---|
155 | extern i386_IDT_slot Interrupt_descriptor_table[ 256 ]; |
---|
156 | extern i386_GDT_slot Global_descriptor_table[ 8192 ]; |
---|
157 | |
---|
158 | BSP_EXTERN unsigned short Idt[3]; /* Interrupt Descriptor Table Address */ |
---|
159 | BSP_EXTERN unsigned short Gdt[3]; /* Global Descriptor Table Address */ |
---|
160 | BSP_EXTERN unsigned int Idt_base; |
---|
161 | BSP_EXTERN unsigned int Gdt_base; |
---|
162 | |
---|
163 | /* routines */ |
---|
164 | |
---|
165 | i386_isr_entry set_vector( |
---|
166 | rtems_isr_entry handler, |
---|
167 | rtems_vector_number vector, |
---|
168 | int type |
---|
169 | ); |
---|
170 | |
---|
171 | #ifdef __cplusplus |
---|
172 | } |
---|
173 | #endif |
---|
174 | |
---|
175 | #endif |
---|
176 | /* end of include file */ |
---|