blob: 1e7a4a650610a27e2efadad69bcbfa34e08c03af (
plain) (
tree)
|
|
/*-------------------------------------------------------------------------+
| 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
+--------------------------------------------------------------------------+
| Modified by Eric Valette the 20/05/98 in order to add definitions used
| to enhance video putchar capabilities.
|
| Copyright (C) 1998 valette@crf.canon.fr
|
| Canon Centre Recherche France.
|
+--------------------------------------------------------------------------+
| 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>
#include <libcpu/cpu.h>
/*-------------------------------------------------------------------------+
| Constants
+--------------------------------------------------------------------------*/
#define BSP_LIBIO_MAX_FDS 20 /* Number of libio files we want. */
/*-------------------------------------------------------------------------+
| Video (console) related constants.
+--------------------------------------------------------------------------*/
#include <crt.h>
/*-------------------------------------------------------------------------+
| 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.
+--------------------------------------------------------------------------*/
#define IDT_SIZE 256
#define GDT_SIZE 3
extern interrupt_gate_descriptor Interrupt_descriptor_table[IDT_SIZE];
extern segment_descriptors Global_descriptor_table [GDT_SIZE];
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' */
char _IBMPC_inch_sleep (void); /* from 'inch.c' */
void printk(char *fmt, ...); /* from 'printk.c' */
void rtemsReboot(void); /* from 'exit.c' */
/* Definitions for PC386ConsolePort */
#define PC386_CONSOLE_PORT_CONSOLE (-1)
#define PC386_CONSOLE_PORT_COM1 (PC386_UART_COM1)
#define PC386_CONSOLE_PORT_COM2 (PC386_UART_COM2)
/* GDB stub stuff */
void i386_stub_glue_init(int uart);
void i386_stub_glue_init_breakin(void);
void set_debug_traps(void);
void breakpoint(void);
#ifdef __cplusplus
}
#endif
#endif /* __BSP_H_ */
/* end of include file */
|
