/*++
Copyright (c) 1991 Microsoft Corporation
Module Name:
jztime.c
Abstract:
This module contains the code to set the Jazz time.
Author:
David M. Robinson (davidro) 25-Oct-1991
Revision History:
--*/
#include "jzsetup.h"
//
// Static Data
//
PVOID JzEisaControlBase;
PVOID JzRealTimeClockBase;
ULONG LastTime = 0;
UCHAR
JzReadClockRegister (
UCHAR Register
)
/*++
Routine Description:
This routine reads the specified realtime clock register.
Arguments:
Register - Supplies the number of the register whose value is read.
Return Value:
The value of the register is returned as the function value.
--*/
{
UCHAR DataByte;
//
// Read the EISA NMI enable register, insert the realtime clock register
// number, and write the value back to the EISA NMI enable register. This
// selects the realtime clock register that is read.
//
DataByte = READ_REGISTER_UCHAR((PUCHAR)JzEisaControlBase + EISA_NMI);
DataByte = (DataByte & 0x80) | Register;
WRITE_REGISTER_UCHAR((PUCHAR)JzEisaControlBase + EISA_NMI, DataByte);
//
// Read the realtime clock register value.
//
DataByte = READ_REGISTER_UCHAR((PUCHAR)JzRealTimeClockBase);
return DataByte;
}
VOID
JzWriteClockRegister (
UCHAR Register,
UCHAR Value
)
/*++
Routine Description:
This routine writes the specified value to the specified realtime
clock register.
Arguments:
Register - Supplies the number of the register whose value is written.
Value - Supplies the value that is written to the specified register.
Return Value:
The value of the register is returned as the function value.
--*/
{
UCHAR DataByte;
//
// Read the EISA NMI enable register, insert the realtime clock register
// number, and write the value back to the EISA NMI enable register. This
// selects the realtime clock register that is written.
//
DataByte = READ_REGISTER_UCHAR((PUCHAR)JzEisaControlBase + EISA_NMI);
DataByte = (DataByte & 0x80) | Register;
WRITE_REGISTER_UCHAR((PUCHAR)JzEisaControlBase + EISA_NMI, DataByte);
//
// Write the realtime clock register value.
//
WRITE_REGISTER_UCHAR((PUCHAR)JzRealTimeClockBase, Value);
return;
}
VOID
JzWriteTime (
IN PTIME_FIELDS TimeFields
)
/*++
Routine Description:
This routine sets the realtime clock.
N.B. This routine assumes that the caller has provided any required
synchronization to set the realtime clock information.
Arguments:
TimeFields - Supplies a pointer to a time structure that specifies the
realtime clock information.
Return Value:
If the power to the realtime clock has not failed, then the time
values are written to the realtime clock and a value of TRUE is
returned. Otherwise, a value of FALSE is returned.
--*/
{
UCHAR DataByte;
//
// If the realtime clock battery is still functioning, then write
// the realtime clock values, and return a function value of TRUE.
// Otherwise, return a function value of FALSE.
//
DataByte = JzReadClockRegister(RTC_CONTROL_REGISTERD);
if (((PRTC_CONTROL_REGISTER_D)(&DataByte))->ValidTime == 1) {
//
// Set the realtime clock control to set the time.
//
DataByte = 0;
((PRTC_CONTROL_REGISTER_B)(&DataByte))->HoursFormat = 1;
((PRTC_CONTROL_REGISTER_B)(&DataByte))->DataMode = 1;
((PRTC_CONTROL_REGISTER_B)(&DataByte))->SetTime = 1;
JzWriteClockRegister(RTC_CONTROL_REGISTERB, DataByte);
//
// Write the realtime clock values.
//
JzWriteClockRegister(RTC_YEAR, (UCHAR)(TimeFields->Year - 1980));
JzWriteClockRegister(RTC_MONTH, (UCHAR)TimeFields->Month);
JzWriteClockRegister(RTC_DAY_OF_MONTH, (UCHAR)TimeFields->Day);
JzWriteClockRegister(RTC_DAY_OF_WEEK, (UCHAR)(TimeFields->Weekday + 1));
JzWriteClockRegister(RTC_HOUR, (UCHAR)TimeFields->Hour);
JzWriteClockRegister(RTC_MINUTE, (UCHAR)TimeFields->Minute);
JzWriteClockRegister(RTC_SECOND, (UCHAR)TimeFields->Second);
//
// Set the realtime clock control to update the time.
//
((PRTC_CONTROL_REGISTER_B)(&DataByte))->SetTime = 0;
JzWriteClockRegister(RTC_CONTROL_REGISTERB, DataByte);
return;
} else {
return;
}
}
VOID
JzSetTime (
VOID
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
UCHAR Character;
ULONG Count;
PTIME_FIELDS TimeFields;
TIME Time;
CHAR TimeString[80];
CHAR DateString[80];
PCHAR StartToken;
PCHAR EndToken;
GETSTRING_ACTION Action;
//
// Set addresses for RTC access.
//
JzEisaControlBase = (PVOID)EISA_IO_VIRTUAL_BASE;
JzRealTimeClockBase = (PVOID)RTC_VIRTUAL_BASE;
JzSetPosition( 3, 5);
JzPrint(JZ_ENTER_DATE_MSG);
do {
Action = FwGetString( DateString,
sizeof(DateString),
NULL,
3,
5 + strlen(JZ_ENTER_DATE_MSG));
if (Action == GetStringEscape) {
return;
}
} while ( Action != GetStringSuccess );
JzSetPosition( 4, 5);
JzPrint(JZ_ENTER_TIME_MSG);
do {
Action = FwGetString( TimeString,
sizeof(TimeString),
NULL,
4,
5 + strlen(JZ_ENTER_TIME_MSG));
if (Action == GetStringEscape) {
return;
}
} while ( Action != GetStringSuccess );
//
// Get time
//
TimeFields = ArcGetTime();
StartToken = DateString;
if (*StartToken != 0) {
EndToken = strchr(StartToken, '-');
if (EndToken != NULL) {
*EndToken = 0;
TimeFields->Month = atoi(StartToken);
StartToken = EndToken + 1;
}
EndToken = strchr(StartToken, '-');
if (EndToken != NULL) {
*EndToken = 0;
TimeFields->Day = atoi(StartToken);
StartToken = EndToken + 1;
TimeFields->Year = atoi(StartToken);
if (TimeFields->Year < 100) {
if (TimeFields->Year < 80) {
TimeFields->Year += 2000;
} else {
TimeFields->Year += 1900;
}
}
}
}
StartToken = TimeString;
if (*StartToken != 0) {
EndToken = strchr(StartToken, ':');
if (EndToken != NULL) {
*EndToken = 0;
TimeFields->Hour = atoi(StartToken);
StartToken = EndToken + 1;
}
EndToken = strchr(StartToken, ':');
if (EndToken != NULL) {
*EndToken = 0;
TimeFields->Minute = atoi(StartToken);
StartToken = EndToken + 1;
TimeFields->Second = atoi(StartToken);
} else {
TimeFields->Minute = atoi(StartToken);
TimeFields->Second = 0;
}
}
if (!RtlTimeFieldsToTime(TimeFields, &Time)) {
JzSetPosition( 5, 5);
JzPrint(JZ_ILLEGAL_TIME_MSG);
JzPrint(JZ_PRESS_KEY2_MSG);
ArcRead(ARC_CONSOLE_INPUT, &Character, 1, &Count);
} else {
RtlTimeToTimeFields( &Time, TimeFields);
JzWriteTime(TimeFields);
}
}
VOID
JzShowTime (
BOOLEAN First
)
/*++
Routine Description:
Arguments:
First - If TRUE then don't check LastTime.
Return Value:
--*/
{
PTIME_FIELDS TimeFields;
TIME Time;
BOOLEAN Pm;
ULONG ThisTime;
//
// Set addresses for RTC access.
//
JzEisaControlBase = (PVOID)EISA_IO_VIRTUAL_BASE;
JzRealTimeClockBase = (PVOID)RTC_VIRTUAL_BASE;
//
// See if the time has changed since last time we were called. This is
// for when the display is over the serial port, so we don't blast
// characters out all the time.
//
ThisTime = ArcGetRelativeTime();
if (!First && (ThisTime == LastTime)) {
//
// Stall to get rid of the "whistle" on Jazz.
//
JzStallExecution(1000);
return;
}
LastTime = ThisTime;
//
// Get and display time.
//
TimeFields = ArcGetTime();
JzSetPosition( 0, 44);
JzPrint("%s, ", Weekday[TimeFields->Weekday]);
JzPrint("%d-", TimeFields->Month);
JzPrint("%d-", TimeFields->Day);
JzPrint("%d ", TimeFields->Year);
if (TimeFields->Hour >= 12) {
Pm = TRUE;
} else {
Pm = FALSE;
}
if (TimeFields->Hour > 12) {
TimeFields->Hour -= 12;
} else if (TimeFields->Hour == 0) {
TimeFields->Hour = 12;
}
JzPrint("%d:", TimeFields->Hour);
JzPrint("%02d:", TimeFields->Minute);
JzPrint("%02d ", TimeFields->Second);
if (Pm) {
JzPrint(JZ_PM);
} else {
JzPrint(JZ_AM);
}
//
// Clear anything to the end of the line.
//
JzPrint("%cK", ASCII_CSI);
return;
}
