Import backup from 2004-07-09

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josh committed 2017-07-25 22:23:47 -04:00
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commit 0729754659
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// cmos.c
// Author: Josh Holtrop
// Created: 02/26/04
// Implements various CMOS function calls
#include "hos_defines.h"
#include "cmos.h"
#include "sys/io.h"
//Returns the cmos type of floppy disk drive 0 (0 = not present)
unsigned char cmos_getfd0()
{
outportb(0x70, 0x10);
return (inportb(0x71) >> 4);
}
//Returns the cmos type of floppy disk drive 1 (0 = not present)
unsigned char cmos_getfd1()
{
outportb(0x70, 0x10);
return (inportb(0x71) & 0x0F);
}
//Returns the cmos type of hard disk drive 0 (0 = not present)
unsigned char cmos_gethd0()
{
outportb(0x70, 0x12);
return (inportb(0x71) >> 4);
}
//Returns the cmos type of hard disk drive 1 (0 = not present)
unsigned char cmos_gethd1()
{
outportb(0x70, 0x12);
return (inportb(0x71) & 0x0F);
}
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// cmos.h
// Author: Josh Holtrop
// Created: 02/26/04
// Implements various CMOS function calls
#include "hos_defines.h"
#ifndef __HOS_CMOS__
#define __HOS_CMOS__ __HOS_CMOS__
unsigned char cmos_getfd0();
unsigned char cmos_getfd1();
unsigned char cmos_gethd0();
unsigned char cmos_gethd1();
#endif
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// io.c
// Author: Josh Holtrop
// Created: 02/26/04
// Implements basic port input/output functions
#include "io.h"
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// io.h
// Author: Josh Holtrop
// Created: 02/26/04
// Implements basic port input/output functions
#ifndef __HOS_IO__
#define __HOS_IO__ __HOS_IO__
#include "hos_defines.h"
//void outportb(unsigned int port, unsigned char value);
//inline void outportw(unsigned int port, unsigned int value);
//inline unsigned char inportb(unsigned short port);
//Writes a byte out to a port
static inline void outportb(unsigned int port, unsigned char value) // Output a byte to a port
{
asm volatile ("outb %%al,%%dx"::"d" (port), "a" (value));
}
//Writes a word out to a port
static inline void outportw(unsigned int port, unsigned int value) // Output a word to a port
{
asm volatile ("outw %%ax,%%dx"::"d" (port), "a" (value));
}
//Reads a byte from a port
static inline unsigned char inportb(unsigned short port)
{
unsigned char ret_val;
asm volatile("inb %w1,%b0"
: "=a"(ret_val)
: "d"(port));
return ret_val;
}
#endif
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// pic.c
// Author: Josh Holtrop
// Created: 02/26/04
#include "hos_defines.h"
#include "pic.h"
#include "sys/io.h"
//Re-maps the Programmable Interrupr Controllers so IRQ0->pic1 base address, IRG8->pic2 base address
void pic_remap(int pic1, int pic2)
{
byte a1, a2;
a1 = inportb(PIC1_DATA); //0x21
a2 = inportb(PIC2_DATA); //0xA1
outportb(PIC1_COMMAND, ICW1_INIT+ICW1_ICW4); //0x20, 0x10+0x01 00010001b
outportb(PIC2_COMMAND, ICW1_INIT+ICW1_ICW4); //0xA0, 0x10+0x01 00010001b
outportb(PIC1_DATA, pic1); //0x21, pic1
outportb(PIC2_DATA, pic2); //0xA1, pic2
outportb(PIC1_DATA, 4); //0x21, 0x04 00000100b
outportb(PIC2_DATA, 2); //0xA1, 0x02 00000010b
outportb(PIC1_DATA, ICW4_8086); //0x21, 0x01 00000001b
outportb(PIC2_DATA, ICW4_8086); //0xA1, 0x01 00000001b
outportb(PIC1_DATA, a1); //0x21
outportb(PIC2_DATA, a2); //0xA1
}
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// pic.h
// Author: Josh Holtrop
// Created: 02/26/04
#ifndef __HOS_PIC__
#define __HOS_PIC__ __HOS_PIC__
#include "hos_defines.h"
#include "sys/io.h"
#define PIC1 0x20
#define PIC2 0xA0
#define PIC1_COMMAND PIC1
#define PIC1_DATA (PIC1+1)
#define PIC2_COMMAND PIC2
#define PIC2_DATA (PIC2+1)
#define PIC_EOI 0x20
#define ICW1_ICW4 0x01 /* ICW4 (not) needed */
#define ICW1_SINGLE 0x02 /* Single (cascade) mode */
#define ICW1_INTERVAL4 0x04 /* Call address interval 4 (8) */
#define ICW1_LEVEL 0x08 /* Level triggered (edge) mode */
#define ICW1_INIT 0x10 /* Initialization - required! */
#define ICW4_8086 0x01 /* 8086/88 (MCS-80/85) mode */
#define ICW4_AUTO 0x02 /* Auto (normal) EOI */
#define ICW4_BUF_SLAVE 0x08 /* Buffered mode/slave */
#define ICW4_BUF_MASTER 0x0C /* Buffered mode/master */
#define ICW4_SFNM 0x10 /* Special fully nested (not) */
void pic_remap(int pic1, int pic2);
//inline void pic_mask1(byte mask);
//inline void pic_mask2(byte mask);
//inline void pic_eoi();
//inline void pic_eoi2();
//Masks interrupts on first Programmable Interrupt Controller
static inline void pic_mask1(byte mask)
{
outportb(PIC1_DATA, mask); //0x21, maskfield *OCW1*
}
//Masks interrupts on second Programmable Interrupt Controller
static inline void pic_mask2(byte mask)
{
outportb(PIC2_DATA, mask); //0xA1, maskfield *OCW1*
}
//Signals an End Of Interrupt signal to the first PIC
static inline void pic_eoi()
{
outportb(0x20, 0x20);
}
//Signals an End Of Interrupt signal to both the second and first PIC unit
static inline void pic_eoi2()
{
outportb(0xA0, 0x20);
outportb(0x20, 0x20);
}
#endif
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// rtc.c
// Author: Josh Holtrop
// Created: 02/26/04
// Implements Real-Time Clock function calls
// These functions are for reading and writing various values stored on the CMOS Real Time Clock
// Parameters / return values are in BCD format
#include "hos_defines.h"
#include "rtc.h"
#include "sys/io.h"
unsigned char rtc_readDay()
{
outportb(0x70, 7);
return inportb(0x71);
}
unsigned char rtc_readMonth()
{
outportb(0x70, 8);
return inportb(0x71);
}
unsigned char rtc_readYear()
{
outportb(0x70, 9);
return inportb(0x71);
}
unsigned char rtc_readSecond()
{
outportb(0x70, 0);
return inportb(0x71);
}
unsigned char rtc_readMinute()
{
outportb(0x70, 2);
return inportb(0x71);
}
unsigned char rtc_readHour()
{
outportb(0x70, 4);
return inportb(0x71);
}
void rtc_setDay(unsigned char day)
{
outportb(0x70, 7);
outportb(0x71, day);
}
void rtc_setMonth(unsigned char month)
{
outportb(0x70, 8);
outportb(0x71, month);
}
void rtc_setYear(unsigned char year)
{
outportb(0x70, 9);
outportb(0x71, year);
}
void rtc_setSecond(unsigned char second)
{
outportb(0x70, 0);
outportb(0x71, second);
}
void rtc_setMinute(unsigned char minute)
{
outportb(0x70, 2);
outportb(0x71, minute);
}
void rtc_setHour(unsigned char hour)
{
outportb(0x70, 4);
outportb(0x71, hour);
}
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// rtc.h
// Author: Josh Holtrop
// Created: 02/26/04
// Implements Real-Time Clock function calls
// These functions are for reading and writing various values stored on the CMOS Real Time Clock
// Parameters / return values are in BCD format
#ifndef __HOS_RTC__
#define __HOS_RTC__ __HOS_RTC__
#include "hos_defines.h"
unsigned char rtc_readDay();
unsigned char rtc_readMonth();
unsigned char rtc_readYear();
unsigned char rtc_readSecond();
unsigned char rtc_readMinute();
unsigned char rtc_readHour();
void rtc_setDay(unsigned char dat);
void rtc_setMonth(unsigned char month);
void rtc_setYear(unsigned char year);
void rtc_setSecond(unsigned char second);
void rtc_setMinute(unsigned char minute);
void rtc_setHour(unsigned char hour);
#endif