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Diffstat (limited to 'c/src/lib/libbsp/i386/go32/include/bsp.h')
| -rw-r--r-- | c/src/lib/libbsp/i386/go32/include/bsp.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/i386/go32/include/bsp.h b/c/src/lib/libbsp/i386/go32/include/bsp.h new file mode 100644 index 0000000000..a9cfa8a987 --- /dev/null +++ b/c/src/lib/libbsp/i386/go32/include/bsp.h @@ -0,0 +1,157 @@ +/* bsp.h + * + * This include file definitions related to the ibm386 (go32) board. + * + * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. + * On-Line Applications Research Corporation (OAR). + * All rights assigned to U.S. Government, 1994. + * + * This material may be reproduced by or for the U.S. Government pursuant + * to the copyright license under the clause at DFARS 252.227-7013. This + * notice must appear in all copies of this file and its derivatives. + * + * $Id$ + */ + +#ifndef __IBMPC_h +#define __IBMPC_h + +#ifdef __cplusplus +extern "C" { +#endif + +#include <rtems.h> +#include <cpu.h> +#include <iosupp.h> + +/* + * 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 */ + + +/* + * Define the interrupt mechanism for Time Test 27 + * + * NOTE: Use a software interrupt for the i386. + */ +#define MUST_WAIT_FOR_INTERRUTPT 0 +#define Install_tm27_vector( handler ) set_vector( (handler), 0x90, 1 ) +#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) ); \ +} + + +/* Constants */ + +/* Assume color console */ +#define COLOR 1 +#if COLOR +# define GDC_REG_PORT 0x3d4 +# define GDC_VAL_PORT 0x3d5 +# define TVRAM ((unsigned short *)0xb8000L) +#else +# define GDC_REG_PORT 0x3b4 +# define GDC_VAL_PORT 0x3b5 +# define TVRAM ((unsigned short *)0xb0000L) +#endif + +/* White character attribute--works for MGA and CGA */ +#define WHITE 0x07 + +/* Ports for PC keyboard */ +#define KBD_CTL 0x61 +#define KBD_DATA 0x60 +#define KBD_STATUS 0x64 + +/* Constants relating to the 8254 (or 8253) programmable interval timers */ + /* Port address of the control port and timer channels */ +/* + * Macros for specifying values to be written into a mode register. + */ +#define IO_TIMER1 0x40 +#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 */ + +/* The internal tick rate in ticks per second */ +#define TIMER_TICK 1193182 +#define US_TO_TICK(us) (((us)*105+44)/88) +#define TICK_TO_US(tk) (((tk)*88+52)/105) + +/* Structures */ + +#ifdef IBMPC_INIT +#undef BSP_EXTERN +#define BSP_EXTERN +#else +#undef BSP_EXTERN +#define BSP_EXTERN extern +#endif + +/* functions */ + +int _IBMPC_chrdy( char * ch ); +int _IBMPC_inch( void ); +void _IBMPC_outch( unsigned char ); + +/* miscellaneous stuff assumed to exist */ + +extern rtems_configuration_table BSP_Configuration; + +#if 0 +extern i386_IDT_slot Interrupt_descriptor_table[ 256 ]; +extern i386_GDT_slot Global_descriptor_table[ 8192 ]; +BSP_EXTERN unsigned short Idt[3]; /* Interrupt Descriptor Table Address */ +BSP_EXTERN unsigned short Gdt[3]; /* Global Descriptor Table Address */ +BSP_EXTERN unsigned int Idt_base; +BSP_EXTERN unsigned int Gdt_base; +#endif + +/* routines */ + +i386_isr set_vector( + rtems_isr_entry handler, + rtems_vector_number vector, + int type +); + +#ifdef __cplusplus +} +#endif + +#endif +/* end of include file */ + |