[7150f00f] | 1 | /*-------------------------------------------------------------------------+ |
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| 2 | | bsp.h v1.1 - PC386 BSP - 1997/08/07 |
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| 3 | +--------------------------------------------------------------------------+ |
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| 4 | | This include file contains definitions related to the PC386 BSP. |
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| 5 | +--------------------------------------------------------------------------+ |
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| 6 | | (C) Copyright 1997 - |
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| 7 | | - NavIST Group - Real-Time Distributed Systems and Industrial Automation |
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| 8 | | |
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| 9 | | http://pandora.ist.utl.pt |
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| 10 | | |
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| 11 | | Instituto Superior Tecnico * Lisboa * PORTUGAL |
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| 12 | +--------------------------------------------------------------------------+ |
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| 13 | | Disclaimer: |
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| 14 | | |
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| 15 | | This file is provided "AS IS" without warranty of any kind, either |
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| 16 | | expressed or implied. |
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| 17 | +--------------------------------------------------------------------------+ |
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| 18 | | This code is based on: |
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| 19 | | bsp.h,v 1.5 1995/12/19 20:07:30 joel Exp - go32 BSP |
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| 20 | | With the following copyright notice: |
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| 21 | | ************************************************************************** |
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[60b791ad] | 22 | | * COPYRIGHT (c) 1989-1998. |
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[6f9c75c3] | 23 | | * On-Line Applications Research Corporation (OAR). |
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| 24 | | * Copyright assigned to U.S. Government, 1994. |
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| 25 | | * |
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| 26 | | * The license and distribution terms for this file may be |
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| 27 | | * found in found in the file LICENSE in this distribution or at |
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| 28 | | * http://www.OARcorp.com/rtems/license.html. |
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[7150f00f] | 29 | | ************************************************************************** |
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[6f9c75c3] | 30 | | |
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| 31 | | $Id$ |
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[7150f00f] | 32 | +--------------------------------------------------------------------------*/ |
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| 33 | |
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| 34 | |
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| 35 | #ifndef __BSP_H_ |
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| 36 | #define __BSP_H_ |
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| 37 | |
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| 38 | #ifdef __cplusplus |
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| 39 | extern "C" { |
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| 40 | #endif |
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| 41 | |
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| 42 | #include <rtems.h> |
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| 43 | #include <iosupp.h> |
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| 44 | #include <console.h> |
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| 45 | #include <clockdrv.h> |
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| 46 | |
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| 47 | /*-------------------------------------------------------------------------+ |
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| 48 | | Constants |
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| 49 | +--------------------------------------------------------------------------*/ |
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| 50 | #define BSP_LIBIO_MAX_FDS 20 /* Number of libio files we want. */ |
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| 51 | |
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| 52 | /*-------------------------------------------------------------------------+ |
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| 53 | | Memory related constants. |
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| 54 | +--------------------------------------------------------------------------*/ |
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| 55 | #define HEAP_SIZE 64 /* Size of libc Heap (used for malloc et al) in KBytes. */ |
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| 56 | |
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| 57 | /*-------------------------------------------------------------------------+ |
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| 58 | | Video (console) related constants. |
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| 59 | +--------------------------------------------------------------------------*/ |
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| 60 | #define COLOUR 1 /* Assume colour console */ |
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| 61 | |
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| 62 | #if COLOUR |
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| 63 | |
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| 64 | # define GDC_REG_PORT 0x3D4 |
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| 65 | # define GDC_VAL_PORT 0x3D5 |
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| 66 | # define TVRAM ((rtems_unsigned16 *)0xB8000) |
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| 67 | |
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| 68 | #else |
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| 69 | |
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| 70 | # define GDC_REG_PORT 0x3B4 |
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| 71 | # define GDC_VAL_PORT 0x3B5 |
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| 72 | # define TVRAM ((rtems_unsigned16 *)0xB0000) |
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| 73 | |
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| 74 | #endif /* COLOUR */ |
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| 75 | |
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| 76 | /* Number of Video Lines & Columns */ |
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| 77 | |
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| 78 | #define MAX_COL 80 |
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| 79 | |
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| 80 | #ifdef RTEMS_VIDEO_80x50 |
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| 81 | #define MAX_ROW 50 |
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| 82 | #else |
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| 83 | #define MAX_ROW 25 |
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| 84 | #endif /* RTEMS_VIDEO_80x50 */ |
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| 85 | |
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| 86 | /*-------------------------------------------------------------------------+ |
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| 87 | | Constants relating to the 8254 (or 8253) programmable interval timers. |
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| 88 | +--------------------------------------------------------------------------*/ |
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| 89 | #define IO_TIMER1 0x40 |
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| 90 | /* Port address of the control port and timer channels */ |
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| 91 | #define TIMER_CNTR0 (IO_TIMER1 + 0) /* timer 0 counter port */ |
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| 92 | #define TIMER_CNTR1 (IO_TIMER1 + 1) /* timer 1 counter port */ |
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| 93 | #define TIMER_CNTR2 (IO_TIMER1 + 2) /* timer 2 counter port */ |
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| 94 | #define TIMER_MODE (IO_TIMER1 + 3) /* timer mode port */ |
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| 95 | #define TIMER_SEL0 0x00 /* select counter 0 */ |
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| 96 | #define TIMER_SEL1 0x40 /* select counter 1 */ |
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| 97 | #define TIMER_SEL2 0x80 /* select counter 2 */ |
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| 98 | #define TIMER_INTTC 0x00 /* mode 0, intr on terminal cnt */ |
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| 99 | #define TIMER_ONESHOT 0x02 /* mode 1, one shot */ |
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| 100 | #define TIMER_RATEGEN 0x04 /* mode 2, rate generator */ |
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| 101 | #define TIMER_SQWAVE 0x06 /* mode 3, square wave */ |
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| 102 | #define TIMER_SWSTROBE 0x08 /* mode 4, s/w triggered strobe */ |
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| 103 | #define TIMER_HWSTROBE 0x0a /* mode 5, h/w triggered strobe */ |
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| 104 | #define TIMER_LATCH 0x00 /* latch counter for reading */ |
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| 105 | #define TIMER_LSB 0x10 /* r/w counter LSB */ |
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| 106 | #define TIMER_MSB 0x20 /* r/w counter MSB */ |
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| 107 | #define TIMER_16BIT 0x30 /* r/w counter 16 bits, LSB first */ |
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| 108 | #define TIMER_BCD 0x01 /* count in BCD */ |
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| 109 | |
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| 110 | #define TIMER_TICK 1193182 /* The internal tick rate in ticks per second */ |
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| 111 | |
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| 112 | /*-------------------------------------------------------------------------+ |
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| 113 | | Define the time limits for RTEMS Test Suite test durations. Long test and |
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| 114 | | short test duration limits are provided. These values are in seconds and |
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| 115 | | need to be converted to ticks for the application. |
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| 116 | +--------------------------------------------------------------------------*/ |
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| 117 | #define MAX_LONG_TEST_DURATION 300 /* 5 minutes = 300 seconds */ |
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| 118 | #define MAX_SHORT_TEST_DURATION 3 /* 3 seconds */ |
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| 119 | |
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| 120 | /*-------------------------------------------------------------------------+ |
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| 121 | | Macros |
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| 122 | +--------------------------------------------------------------------------*/ |
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| 123 | /*-------------------------------------------------------------------------+ |
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| 124 | | Define the interrupt mechanism for Time Test 27. |
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| 125 | | NOTE: Use a software interrupt for the i386 family. |
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| 126 | +--------------------------------------------------------------------------*/ |
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| 127 | #define MUST_WAIT_FOR_INTERRUPT 0 |
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| 128 | #define Install_tm27_vector(handler) \ |
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| 129 | { \ |
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| 130 | rtems_isr_entry dummy; \ |
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| 131 | rtems_interrupt_catch(handler, 0x90, &dummy); \ |
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| 132 | } |
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| 133 | #define Cause_tm27_intr() asm volatile("int $0x90" : :); |
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| 134 | #define Clear_tm27_intr() |
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| 135 | #define Lower_tm27_intr() |
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| 136 | |
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| 137 | /*-------------------------------------------------------------------------+ |
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| 138 | | Simple spin delay in microsecond units for device drivers. |
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| 139 | | This is very dependent on the clock speed of the target. |
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| 140 | +--------------------------------------------------------------------------*/ |
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| 141 | #define delay(_microseconds) \ |
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| 142 | { \ |
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| 143 | rtems_unsigned32 _cnt = _microseconds; \ |
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| 144 | asm volatile ("0: nop; mov %0,%0; loop 0b" : "=c"(_cnt) : "0"(_cnt)); \ |
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| 145 | } |
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| 146 | |
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| 147 | /*-------------------------------------------------------------------------+ |
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| 148 | | Convert microseconds to ticks and ticks to microseconds. |
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| 149 | +--------------------------------------------------------------------------*/ |
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| 150 | #define US_TO_TICK(us) (((us)*105+44)/88) |
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| 151 | #define TICK_TO_US(tk) (((tk)*88+52)/105) |
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| 152 | |
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| 153 | /*-------------------------------------------------------------------------+ |
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| 154 | | External Variables. |
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| 155 | +--------------------------------------------------------------------------*/ |
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| 156 | extern i386_IDT_slot Interrupt_descriptor_table[256]; |
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| 157 | extern i386_GDT_slot Global_descriptor_table [8192]; |
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| 158 | |
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| 159 | extern rtems_configuration_table BSP_Configuration; |
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| 160 | /* User provided BSP configuration table. */ |
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| 161 | extern rtems_unsigned32 rtemsFreeMemStart; |
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| 162 | /* Address of start of free memory - should be used when creating new |
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| 163 | partitions or regions and updated afterwards. */ |
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| 164 | |
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| 165 | /*-------------------------------------------------------------------------+ |
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| 166 | | Function Prototypes. |
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| 167 | +--------------------------------------------------------------------------*/ |
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| 168 | void _IBMPC_initVideo(void); /* from 'outch.c' */ |
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| 169 | void _IBMPC_outch (char); /* from 'outch.c' */ |
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| 170 | rtems_boolean _IBMPC_chrdy (char *); /* from 'inch.c' */ |
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| 171 | char _IBMPC_inch (void); /* from 'inch.c' */ |
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| 172 | |
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| 173 | void printk(char *fmt, ...); /* from 'printk.c' */ |
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| 174 | |
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| 175 | void rtemsReboot(void); /* from 'exit.c' */ |
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| 176 | |
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| 177 | #ifdef __cplusplus |
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| 178 | } |
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| 179 | #endif |
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| 180 | |
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| 181 | #endif /* __BSP_H_ */ |
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| 182 | /* end of include file */ |
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