92 lines
1.6 KiB
C
92 lines
1.6 KiB
C
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/*++
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Copyright (c) 1991 Microsoft Corporation
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Module Name:
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xxtime.c
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Abstract:
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This module implements the HAL set/query realtime clock routines for
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an x86 system.
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Author:
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David N. Cutler (davec) 5-May-1991
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Environment:
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Kernel mode
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Revision History:
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--*/
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#include "halp.h"
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BOOLEAN
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HalQueryRealTimeClock (
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OUT PTIME_FIELDS TimeFields
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)
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/*++
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Routine Description:
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This routine queries the realtime clock.
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N.B. This routine assumes that the caller has provided any required
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synchronization to query the realtime clock information.
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Arguments:
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TimeFields - Supplies a pointer to a time structure that receives
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the realtime clock information.
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Return Value:
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If the power to the realtime clock has not failed, then the time
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values are read from the realtime clock and a value of TRUE is
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returned. Otherwise, a value of FALSE is returned.
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--*/
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{
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HalpReadCmosTime(TimeFields);
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return TRUE;
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}
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BOOLEAN
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HalSetRealTimeClock (
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IN PTIME_FIELDS TimeFields
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)
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/*++
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Routine Description:
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This routine sets the realtime clock.
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N.B. This routine assumes that the caller has provided any required
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synchronization to set the realtime clock information.
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Arguments:
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TimeFields - Supplies a pointer to a time structure that specifies the
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realtime clock information.
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Return Value:
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If the power to the realtime clock has not failed, then the time
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values are written to the realtime clock and a value of TRUE is
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returned. Otherwise, a value of FALSE is returned.
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--*/
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{
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HalpWriteCmosTime(TimeFields);
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return TRUE;
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}
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