[d1dbcab9] | 1 | /* |
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| 2 | * This include file definitions related to an Intel i386ex board. |
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[752cd8f] | 3 | * |
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[03f2154e] | 4 | * COPYRIGHT (c) 1989-1997. |
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[752cd8f] | 5 | * On-Line Applications Research Corporation (OAR). |
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[03f2154e] | 6 | * Copyright assigned to U.S. Government, 1994. |
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[752cd8f] | 7 | * |
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[98e4ebf5] | 8 | * The license and distribution terms for this file may be |
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| 9 | * found in the file LICENSE in this distribution or at |
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[03f2154e] | 10 | * http://www.OARcorp.com/rtems/license.html. |
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[752cd8f] | 11 | * |
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| 12 | * $Id$ |
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| 13 | */ |
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| 14 | |
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| 15 | #ifndef __FORCE386_h |
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| 16 | #define __FORCE386_h |
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| 17 | |
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| 18 | #ifdef __cplusplus |
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| 19 | extern "C" { |
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| 20 | #endif |
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| 21 | |
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| 22 | #include <rtems.h> |
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| 23 | #include <iosupp.h> |
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[fe6ef776] | 24 | #include <console.h> |
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| 25 | #include <clockdrv.h> |
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[752cd8f] | 26 | |
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| 27 | /* |
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| 28 | * Define the time limits for RTEMS Test Suite test durations. |
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| 29 | * Long test and short test duration limits are provided. These |
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| 30 | * values are in seconds and need to be converted to ticks for the |
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| 31 | * application. |
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| 32 | * |
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| 33 | */ |
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| 34 | |
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| 35 | #define MAX_LONG_TEST_DURATION 300 /* 5 minutes = 300 seconds */ |
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| 36 | #define MAX_SHORT_TEST_DURATION 3 /* 3 seconds */ |
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| 37 | |
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| 38 | /* |
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| 39 | * Define the interrupt mechanism for Time Test 27 |
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| 40 | * |
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| 41 | * NOTE: Use a software interrupt for the i386. |
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| 42 | */ |
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| 43 | |
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| 44 | #define MUST_WAIT_FOR_INTERRUTPT 0 |
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| 45 | |
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| 46 | #define Install_tm27_vector( handler ) set_vector( (handler), 0x90, 1 ) |
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| 47 | |
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| 48 | #define Cause_tm27_intr() asm volatile( "int $0x90" : : ); |
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| 49 | |
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| 50 | #define Clear_tm27_intr() |
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| 51 | |
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| 52 | #define Lower_tm27_intr() |
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| 53 | |
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| 54 | /* |
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| 55 | * Simple spin delay in microsecond units for device drivers. |
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| 56 | * This is very dependent on the clock speed of the target. |
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| 57 | */ |
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| 58 | |
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| 59 | #define delay( _microseconds ) \ |
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| 60 | { \ |
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| 61 | rtems_unsigned32 _counter; \ |
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| 62 | \ |
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| 63 | _counter = (_microseconds); \ |
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| 64 | \ |
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| 65 | asm volatile ( "0: nop;" \ |
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| 66 | " mov %0,%0 ;" \ |
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| 67 | " loop 0b" : "=c" (_counter) \ |
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| 68 | : "0" (_counter) \ |
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| 69 | ); \ |
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| 70 | \ |
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| 71 | } |
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| 72 | |
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| 73 | /* Constants */ |
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| 74 | |
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| 75 | #define RAM_START 0 |
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| 76 | |
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| 77 | /* replaced the earlier EI kludge of 0xfffff */ |
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| 78 | |
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| 79 | #define RAM_END 0x100000 |
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| 80 | |
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| 81 | /* I/O addressing */ |
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| 82 | |
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| 83 | /* |
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| 84 | *#define Is_tx_ready( _status ) ( (_status) & 0x20 ) |
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| 85 | */ |
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| 86 | /* dec 20. try the TE instead of TBE as the check */ |
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| 87 | |
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| 88 | #define Is_tx_ready( _status ) ( (_status) & 0x40 ) |
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| 89 | |
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| 90 | |
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| 91 | #define Is_rx_ready( _status ) ( (_status) & 0x01 ) |
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| 92 | |
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| 93 | /* Structures */ |
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| 94 | |
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| 95 | #ifdef F386_INIT |
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| 96 | #undef BSP_EXTERN |
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| 97 | #define BSP_EXTERN |
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| 98 | #else |
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| 99 | #undef BSP_EXTERN |
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| 100 | #define BSP_EXTERN extern |
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| 101 | #endif |
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| 102 | |
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[d1dbcab9] | 103 | /* |
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| 104 | * Device Driver Table Entries |
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| 105 | */ |
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| 106 | |
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| 107 | /* |
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| 108 | * NOTE: Use the standard Console driver entry |
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| 109 | */ |
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| 110 | |
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| 111 | /* |
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| 112 | * NOTE: Use the standard Clock driver entry |
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| 113 | */ |
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| 114 | |
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| 115 | /* |
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| 116 | * How many libio files we want |
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| 117 | */ |
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| 118 | |
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| 119 | #define BSP_LIBIO_MAX_FDS 20 |
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| 120 | |
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[752cd8f] | 121 | /* miscellaneous stuff assumed to exist */ |
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| 122 | |
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| 123 | extern rtems_configuration_table BSP_Configuration; |
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| 124 | |
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| 125 | extern i386_IDT_slot Interrupt_descriptor_table[ 256 ]; |
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| 126 | extern i386_GDT_slot Global_descriptor_table[ 8192 ]; |
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| 127 | |
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| 128 | BSP_EXTERN unsigned short Idt[3]; /* Interrupt Descriptor Table Address */ |
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| 129 | BSP_EXTERN unsigned short Gdt[3]; /* Global Descriptor Table Address */ |
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| 130 | BSP_EXTERN unsigned int Idt_base; |
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| 131 | BSP_EXTERN unsigned int Gdt_base; |
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| 132 | |
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| 133 | /* routines */ |
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| 134 | |
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| 135 | i386_isr_entry set_vector( |
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| 136 | rtems_isr_entry handler, |
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| 137 | rtems_vector_number vector, |
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| 138 | int type |
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| 139 | ); |
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| 140 | |
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| 141 | #ifdef __cplusplus |
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| 142 | } |
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| 143 | #endif |
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| 144 | |
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| 145 | #endif |
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| 146 | /* end of include file */ |
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