diff options
Diffstat (limited to 'PcAtChipsetPkg/PcRtc/RealTimeClock.c')
-rw-r--r-- | PcAtChipsetPkg/PcRtc/RealTimeClock.c | 993 |
1 files changed, 0 insertions, 993 deletions
diff --git a/PcAtChipsetPkg/PcRtc/RealTimeClock.c b/PcAtChipsetPkg/PcRtc/RealTimeClock.c deleted file mode 100644 index 76b498db1e..0000000000 --- a/PcAtChipsetPkg/PcRtc/RealTimeClock.c +++ /dev/null @@ -1,993 +0,0 @@ -/*++
-
-Copyright (c) 2005 - 2007, Intel Corporation
-All rights reserved. This program and the accompanying materials
-are licensed and made available under the terms and conditions of the BSD License
-which accompanies this distribution. The full text of the license may be found at
-http://opensource.org/licenses/bsd-license.php
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-Module Name:
- PcRtc.c
-
-Abstract:
-
- RTC Architectural Protocol GUID as defined in EFI 2.0
-
---*/
-
-#include "RealTimeClock.h"
-
-BOOLEAN
-DayValid (
- IN EFI_TIME *Time
- );
-
-BOOLEAN
-IsLeapYear (
- IN EFI_TIME *Time
- );
-
-BOOLEAN
-IsWithinOneDay (
- IN EFI_TIME *From,
- IN EFI_TIME *To
- );
-
-INTN
-CompareHMS (
- IN EFI_TIME *From,
- IN EFI_TIME *To
- );
-
-INTN mDayOfMonth[12] = {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
-
-UINT8
-RtcRead (
- IN UINT8 Address
- )
-/*++
-
-Routine Description:
-
- TODO: Add function description
-
-Arguments:
-
- Address - TODO: add argument description
-
-Returns:
-
- TODO: add return values
-
---*/
-{
- IoWrite8 (PCAT_RTC_ADDRESS_REGISTER, (UINT8) (Address | (UINT8) (IoRead8 (PCAT_RTC_ADDRESS_REGISTER) & 0x80)));
- return IoRead8 (PCAT_RTC_DATA_REGISTER);
-}
-
-INTN
-CompareHMS (
- IN EFI_TIME *From,
- IN EFI_TIME *To
- )
-/*++
-
-Routine Description:
-
- Compare the Hour, Minute and Second of the 'From' time and the 'To' time.
- Only compare H/M/S in EFI_TIME and ignore other fields here.
-
-Arguments:
-
- From - the first time
- To - the second time
-
-Returns:
-
- >0 : The H/M/S of the 'From' time is later than those of 'To' time
- ==0 : The H/M/S of the 'From' time is same as those of 'To' time
- <0 : The H/M/S of the 'From' time is earlier than those of 'To' time
-
---*/
-
-{
- if ((From->Hour > To->Hour) ||
- ((From->Hour == To->Hour) && (From->Minute > To->Minute)) ||
- ((From->Hour == To->Hour) && (From->Minute == To->Minute) && (From->Second > To->Second))) {
- return 1;
- } else if ((From->Hour == To->Hour) && (From->Minute == To->Minute) && (From->Second == To->Second)) {
- return 0;
- } else {
- return -1;
- }
-}
-
-VOID
-RtcWrite (
- IN UINT8 Address,
- IN UINT8 Data
- )
-/*++
-
-Routine Description:
-
- TODO: Add function description
-
-Arguments:
-
- Address - TODO: add argument description
- Data - TODO: add argument description
-
-Returns:
-
- TODO: add return values
-
---*/
-{
- IoWrite8 (PCAT_RTC_ADDRESS_REGISTER, (UINT8) (Address | (UINT8) (IoRead8 (PCAT_RTC_ADDRESS_REGISTER) & 0x80)));
- IoWrite8 (PCAT_RTC_DATA_REGISTER, Data);
-}
-
-EFI_STATUS
-PcRtcInit (
- IN PC_RTC_MODULE_GLOBALS *Global
- )
-/*++
-
-Routine Description:
-
- TODO: Add function description
-
-Arguments:
-
- Global - TODO: add argument description
-
-Returns:
-
- EFI_DEVICE_ERROR - TODO: Add description for return value
- EFI_SUCCESS - TODO: Add description for return value
-
---*/
-{
- EFI_STATUS Status;
- RTC_REGISTER_A RegisterA;
- RTC_REGISTER_B RegisterB;
- //RTC_REGISTER_C RegisterC;
- RTC_REGISTER_D RegisterD;
- UINT8 Century;
- EFI_TIME Time;
-
- //
- // Acquire RTC Lock to make access to RTC atomic
- //
- EfiAcquireLock (&Global->RtcLock);
-
- //
- // Initialize RTC Register
- //
- // Make sure Division Chain is properly configured,
- // or RTC clock won't "tick" -- time won't increment
- //
- RegisterA.Data = RTC_INIT_REGISTER_A;
- RtcWrite (RTC_ADDRESS_REGISTER_A, RegisterA.Data);
-
- //
- // Read Register B
- //
- RegisterB.Data = RtcRead (RTC_ADDRESS_REGISTER_B);
-
- //
- // Clear RTC flag register
- //
- //RegisterC.Data = RtcRead (RTC_ADDRESS_REGISTER_C);
-
- //
- // Clear RTC register D
- //
- RegisterD.Data = RTC_INIT_REGISTER_D;
- RtcWrite (RTC_ADDRESS_REGISTER_D, RegisterD.Data);
-
- //
- // Wait for up to 0.1 seconds for the RTC to be updated
- //
- // KEN: BUGBUG following wait action will cause failure under vmware environment.
- //
- //Status = RtcWaitToUpdate (100000);
- //if (EFI_ERROR (Status)) {
- // EfiReleaseLock (&Global->RtcLock);
- // return EFI_DEVICE_ERROR;
- //}
- //
- // Get the Time/Date/Daylight Savings values.
- //
- Time.Second = RtcRead (RTC_ADDRESS_SECONDS);
- Time.Minute = RtcRead (RTC_ADDRESS_MINUTES);
- Time.Hour = RtcRead (RTC_ADDRESS_HOURS);
- Time.Day = RtcRead (RTC_ADDRESS_DAY_OF_THE_MONTH);
- Time.Month = RtcRead (RTC_ADDRESS_MONTH);
- Time.Year = RtcRead (RTC_ADDRESS_YEAR);
-
- ConvertRtcTimeToEfiTime (&Time, RegisterB);
-
- Century = BcdToDecimal8 (RtcRead (RTC_ADDRESS_CENTURY));
-
- Time.Year = (UINT16) (Century * 100 + Time.Year);
-
- //
- // Set RTC configuration after get original time
- //
- RtcWrite (RTC_ADDRESS_REGISTER_B, RTC_INIT_REGISTER_B);
-
- //
- // Release RTC Lock.
- //
- EfiReleaseLock (&Global->RtcLock);
-
- //
- // Validate time fields
- //
- Status = RtcTimeFieldsValid (&Time);
- if (EFI_ERROR (Status)) {
- Time.Second = RTC_INIT_SECOND;
- Time.Minute = RTC_INIT_MINUTE;
- Time.Hour = RTC_INIT_HOUR;
- Time.Day = RTC_INIT_DAY;
- Time.Month = RTC_INIT_MONTH;
- Time.Year = RTC_INIT_YEAR;
- }
- //
- // Reset time value according to new RTC configuration
- //
- PcRtcSetTime (&Time, Global);
-
- return EFI_SUCCESS;
-}
-
-EFI_STATUS
-PcRtcGetTime (
- OUT EFI_TIME *Time,
- IN EFI_TIME_CAPABILITIES *Capabilities,
- IN PC_RTC_MODULE_GLOBALS *Global
- )
-/*++
-
-Routine Description:
-
- Arguments:
-
- Returns:
---*/
-// TODO: Time - add argument and description to function comment
-// TODO: Capabilities - add argument and description to function comment
-// TODO: Global - add argument and description to function comment
-// TODO: EFI_INVALID_PARAMETER - add return value to function comment
-// TODO: EFI_DEVICE_ERROR - add return value to function comment
-// TODO: EFI_SUCCESS - add return value to function comment
-{
- EFI_STATUS Status;
- RTC_REGISTER_B RegisterB;
- UINT8 Century;
- //UINTN BufferSize;
-
- //
- // Check parameters for null pointer
- //
- if (Time == NULL) {
- return EFI_INVALID_PARAMETER;
-
- }
- //
- // Acquire RTC Lock to make access to RTC atomic
- //
- EfiAcquireLock (&Global->RtcLock);
-
- //
- // Wait for up to 0.1 seconds for the RTC to be updated
- //
- Status = RtcWaitToUpdate (100000);
- if (EFI_ERROR (Status)) {
- EfiReleaseLock (&Global->RtcLock);
- return Status;
- }
- //
- // Read Register B
- //
- RegisterB.Data = RtcRead (RTC_ADDRESS_REGISTER_B);
-
- //
- // Get the Time/Date/Daylight Savings values.
- //
- Time->Second = RtcRead (RTC_ADDRESS_SECONDS);
- Time->Minute = RtcRead (RTC_ADDRESS_MINUTES);
- Time->Hour = RtcRead (RTC_ADDRESS_HOURS);
- Time->Day = RtcRead (RTC_ADDRESS_DAY_OF_THE_MONTH);
- Time->Month = RtcRead (RTC_ADDRESS_MONTH);
- Time->Year = RtcRead (RTC_ADDRESS_YEAR);
-
- ConvertRtcTimeToEfiTime (Time, RegisterB);
-
- Century = BcdToDecimal8 (RtcRead (RTC_ADDRESS_CENTURY));
-
- Time->Year = (UINT16) (Century * 100 + Time->Year);
-
- //
- // Release RTC Lock.
- //
- EfiReleaseLock (&Global->RtcLock);
-
- //
- // Get the variable that containts the TimeZone and Daylight fields
- //
- Time->TimeZone = Global->SavedTimeZone;
- Time->Daylight = Global->Daylight;
-
- //BufferSize = sizeof (INT16) + sizeof (UINT8);
-
- //
- // Make sure all field values are in correct range
- //
- Status = RtcTimeFieldsValid (Time);
- if (EFI_ERROR (Status)) {
- return EFI_DEVICE_ERROR;
- }
- //
- // Fill in Capabilities if it was passed in
- //
- if (Capabilities) {
- Capabilities->Resolution = 1;
- //
- // 1 hertz
- //
- Capabilities->Accuracy = 50000000;
- //
- // 50 ppm
- //
- Capabilities->SetsToZero = FALSE;
- }
-
- return EFI_SUCCESS;
-}
-
-EFI_STATUS
-PcRtcSetTime (
- IN EFI_TIME *Time,
- IN PC_RTC_MODULE_GLOBALS *Global
- )
-/*++
-
-Routine Description:
-
- Arguments:
-
- Returns:
---*/
-// TODO: Time - add argument and description to function comment
-// TODO: Global - add argument and description to function comment
-// TODO: EFI_INVALID_PARAMETER - add return value to function comment
-{
- EFI_STATUS Status;
- EFI_TIME RtcTime;
- RTC_REGISTER_B RegisterB;
- UINT8 Century;
-
- if (Time == NULL) {
- return EFI_INVALID_PARAMETER;
- }
- //
- // Make sure that the time fields are valid
- //
- Status = RtcTimeFieldsValid (Time);
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- CopyMem (&RtcTime, Time, sizeof (EFI_TIME));
-
- //
- // Acquire RTC Lock to make access to RTC atomic
- //
- EfiAcquireLock (&Global->RtcLock);
-
- //
- // Wait for up to 0.1 seconds for the RTC to be updated
- //
- Status = RtcWaitToUpdate (100000);
- if (EFI_ERROR (Status)) {
- EfiReleaseLock (&Global->RtcLock);
- return Status;
- }
- //
- // Read Register B, and inhibit updates of the RTC
- //
- RegisterB.Data = RtcRead (RTC_ADDRESS_REGISTER_B);
- RegisterB.Bits.SET = 1;
- RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);
-
- ConvertEfiTimeToRtcTime (&RtcTime, RegisterB, &Century);
-
- RtcWrite (RTC_ADDRESS_SECONDS, RtcTime.Second);
- RtcWrite (RTC_ADDRESS_MINUTES, RtcTime.Minute);
- RtcWrite (RTC_ADDRESS_HOURS, RtcTime.Hour);
- RtcWrite (RTC_ADDRESS_DAY_OF_THE_MONTH, RtcTime.Day);
- RtcWrite (RTC_ADDRESS_MONTH, RtcTime.Month);
- RtcWrite (RTC_ADDRESS_YEAR, (UINT8) RtcTime.Year);
- RtcWrite (RTC_ADDRESS_CENTURY, Century);
-
- //
- // Allow updates of the RTC registers
- //
- RegisterB.Bits.SET = 0;
- RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);
-
- //
- // Release RTC Lock.
- //
- EfiReleaseLock (&Global->RtcLock);
-
- //
- // Set the variable that containts the TimeZone and Daylight fields
- //
- Global->SavedTimeZone = Time->TimeZone;
- Global->Daylight = Time->Daylight;
- return Status;
-}
-
-EFI_STATUS
-EFIAPI
-PcRtcGetWakeupTime (
- OUT BOOLEAN *Enabled,
- OUT BOOLEAN *Pending,
- OUT EFI_TIME *Time,
- IN PC_RTC_MODULE_GLOBALS *Global
- )
-/*++
-
-Routine Description:
-
- Arguments:
-
-
-
-Returns:
---*/
-// TODO: Enabled - add argument and description to function comment
-// TODO: Pending - add argument and description to function comment
-// TODO: Time - add argument and description to function comment
-// TODO: Global - add argument and description to function comment
-// TODO: EFI_INVALID_PARAMETER - add return value to function comment
-// TODO: EFI_DEVICE_ERROR - add return value to function comment
-// TODO: EFI_DEVICE_ERROR - add return value to function comment
-// TODO: EFI_SUCCESS - add return value to function comment
-{
- EFI_STATUS Status;
- RTC_REGISTER_B RegisterB;
- RTC_REGISTER_C RegisterC;
- UINT8 Century;
-
- //
- // Check paramters for null pointers
- //
- if ((Enabled == NULL) || (Pending == NULL) || (Time == NULL)) {
- return EFI_INVALID_PARAMETER;
-
- }
- //
- // Acquire RTC Lock to make access to RTC atomic
- //
- EfiAcquireLock (&Global->RtcLock);
-
- //
- // Wait for up to 0.1 seconds for the RTC to be updated
- //
- Status = RtcWaitToUpdate (100000);
- if (EFI_ERROR (Status)) {
- EfiReleaseLock (&Global->RtcLock);
- return EFI_DEVICE_ERROR;
- }
- //
- // Read Register B and Register C
- //
- RegisterB.Data = RtcRead (RTC_ADDRESS_REGISTER_B);
- RegisterC.Data = RtcRead (RTC_ADDRESS_REGISTER_C);
-
- //
- // Get the Time/Date/Daylight Savings values.
- //
- *Enabled = RegisterB.Bits.AIE;
- if (*Enabled) {
- Time->Second = RtcRead (RTC_ADDRESS_SECONDS_ALARM);
- Time->Minute = RtcRead (RTC_ADDRESS_MINUTES_ALARM);
- Time->Hour = RtcRead (RTC_ADDRESS_HOURS_ALARM);
- Time->Day = RtcRead (RTC_ADDRESS_DAY_OF_THE_MONTH);
- Time->Month = RtcRead (RTC_ADDRESS_MONTH);
- Time->Year = RtcRead (RTC_ADDRESS_YEAR);
- } else {
- Time->Second = 0;
- Time->Minute = 0;
- Time->Hour = 0;
- Time->Day = RtcRead (RTC_ADDRESS_DAY_OF_THE_MONTH);
- Time->Month = RtcRead (RTC_ADDRESS_MONTH);
- Time->Year = RtcRead (RTC_ADDRESS_YEAR);
- }
-
- ConvertRtcTimeToEfiTime (Time, RegisterB);
-
- Century = BcdToDecimal8 (RtcRead (RTC_ADDRESS_CENTURY));
-
- Time->Year = (UINT16) (Century * 100 + Time->Year);
-
- //
- // Release RTC Lock.
- //
- EfiReleaseLock (&Global->RtcLock);
-
- //
- // Make sure all field values are in correct range
- //
- Status = RtcTimeFieldsValid (Time);
- if (EFI_ERROR (Status)) {
- return EFI_DEVICE_ERROR;
- }
-
- *Pending = RegisterC.Bits.AF;
-
- return EFI_SUCCESS;
-}
-
-EFI_STATUS
-EFIAPI
-PcRtcSetWakeupTime (
- IN BOOLEAN Enable,
- OUT EFI_TIME *Time,
- IN PC_RTC_MODULE_GLOBALS *Global
- )
-/*++
-
-Routine Description:
-
- Arguments:
-
-
-
-Returns:
---*/
-// TODO: Enable - add argument and description to function comment
-// TODO: Time - add argument and description to function comment
-// TODO: Global - add argument and description to function comment
-// TODO: EFI_INVALID_PARAMETER - add return value to function comment
-// TODO: EFI_INVALID_PARAMETER - add return value to function comment
-// TODO: EFI_UNSUPPORTED - add return value to function comment
-// TODO: EFI_DEVICE_ERROR - add return value to function comment
-// TODO: EFI_SUCCESS - add return value to function comment
-{
- EFI_STATUS Status;
- EFI_TIME RtcTime;
- RTC_REGISTER_B RegisterB;
- UINT8 Century;
- EFI_TIME_CAPABILITIES Capabilities;
-
- if (Enable) {
-
- if (Time == NULL) {
- return EFI_INVALID_PARAMETER;
- }
- //
- // Make sure that the time fields are valid
- //
- Status = RtcTimeFieldsValid (Time);
- if (EFI_ERROR (Status)) {
- return EFI_INVALID_PARAMETER;
- }
- //
- // Just support set alarm time within 24 hours
- //
- PcRtcGetTime (&RtcTime, &Capabilities, Global);
- if (!IsWithinOneDay (&RtcTime, Time)) {
- return EFI_UNSUPPORTED;
- }
- //
- // Make a local copy of the time and date
- //
- CopyMem (&RtcTime, Time, sizeof (EFI_TIME));
-
- }
- //
- // Acquire RTC Lock to make access to RTC atomic
- //
- EfiAcquireLock (&Global->RtcLock);
-
- //
- // Wait for up to 0.1 seconds for the RTC to be updated
- //
- Status = RtcWaitToUpdate (100000);
- if (EFI_ERROR (Status)) {
- EfiReleaseLock (&Global->RtcLock);
- return EFI_DEVICE_ERROR;
- }
- //
- // Read Register B, and inhibit updates of the RTC
- //
- RegisterB.Data = RtcRead (RTC_ADDRESS_REGISTER_B);
-
- RegisterB.Bits.SET = 1;
- RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);
-
- if (Enable) {
- ConvertEfiTimeToRtcTime (&RtcTime, RegisterB, &Century);
-
- //
- // Set RTC alarm time
- //
- RtcWrite (RTC_ADDRESS_SECONDS_ALARM, RtcTime.Second);
- RtcWrite (RTC_ADDRESS_MINUTES_ALARM, RtcTime.Minute);
- RtcWrite (RTC_ADDRESS_HOURS_ALARM, RtcTime.Hour);
-
- RegisterB.Bits.AIE = 1;
-
- } else {
- RegisterB.Bits.AIE = 0;
- }
- //
- // Allow updates of the RTC registers
- //
- RegisterB.Bits.SET = 0;
- RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);
-
- //
- // Release RTC Lock.
- //
- EfiReleaseLock (&Global->RtcLock);
-
- return EFI_SUCCESS;
-}
-
-VOID
-ConvertRtcTimeToEfiTime (
- IN EFI_TIME *Time,
- IN RTC_REGISTER_B RegisterB
- )
-/*++
-
-Routine Description:
-
- Arguments:
-
-
-
-Returns:
---*/
-// TODO: Time - add argument and description to function comment
-// TODO: RegisterB - add argument and description to function comment
-{
- BOOLEAN PM;
-
- if ((Time->Hour) & 0x80) {
- PM = TRUE;
- } else {
- PM = FALSE;
- }
-
- Time->Hour = (UINT8) (Time->Hour & 0x7f);
-
- if (RegisterB.Bits.DM == 0) {
- Time->Year = BcdToDecimal8 ((UINT8) Time->Year);
- Time->Month = BcdToDecimal8 (Time->Month);
- Time->Day = BcdToDecimal8 (Time->Day);
- Time->Hour = BcdToDecimal8 (Time->Hour);
- Time->Minute = BcdToDecimal8 (Time->Minute);
- Time->Second = BcdToDecimal8 (Time->Second);
- }
- //
- // If time is in 12 hour format, convert it to 24 hour format
- //
- if (RegisterB.Bits.MIL == 0) {
- if (PM && Time->Hour < 12) {
- Time->Hour = (UINT8) (Time->Hour + 12);
- }
-
- if (!PM && Time->Hour == 12) {
- Time->Hour = 0;
- }
- }
-
- Time->Nanosecond = 0;
- Time->TimeZone = EFI_UNSPECIFIED_TIMEZONE;
- Time->Daylight = 0;
-}
-
-EFI_STATUS
-RtcWaitToUpdate (
- UINTN Timeout
- )
-/*++
-
-Routine Description:
-
- Arguments:
-
-
-Returns:
---*/
-// TODO: Timeout - add argument and description to function comment
-// TODO: EFI_DEVICE_ERROR - add return value to function comment
-// TODO: EFI_DEVICE_ERROR - add return value to function comment
-// TODO: EFI_SUCCESS - add return value to function comment
-{
- RTC_REGISTER_A RegisterA;
- RTC_REGISTER_D RegisterD;
-
- //
- // See if the RTC is functioning correctly
- //
- RegisterD.Data = RtcRead (RTC_ADDRESS_REGISTER_D);
-
- if (RegisterD.Bits.VRT == 0) {
- return EFI_DEVICE_ERROR;
- }
- //
- // Wait for up to 0.1 seconds for the RTC to be ready.
- //
- Timeout = (Timeout / 10) + 1;
- RegisterA.Data = RtcRead (RTC_ADDRESS_REGISTER_A);
- while (RegisterA.Bits.UIP == 1 && Timeout > 0) {
- MicroSecondDelay (10);
- RegisterA.Data = RtcRead (RTC_ADDRESS_REGISTER_A);
- Timeout--;
- }
-
- RegisterD.Data = RtcRead (RTC_ADDRESS_REGISTER_D);
- if (Timeout == 0 || RegisterD.Bits.VRT == 0) {
- return EFI_DEVICE_ERROR;
- }
-
- return EFI_SUCCESS;
-}
-
-EFI_STATUS
-RtcTimeFieldsValid (
- IN EFI_TIME *Time
- )
-/*++
-
-Routine Description:
-
- Arguments:
-
- Returns:
---*/
-// TODO: Time - add argument and description to function comment
-// TODO: EFI_INVALID_PARAMETER - add return value to function comment
-// TODO: EFI_SUCCESS - add return value to function comment
-{
- if (Time->Year < 1998 ||
- Time->Year > 2099 ||
- Time->Month < 1 ||
- Time->Month > 12 ||
- (!DayValid (Time)) ||
- Time->Hour > 23 ||
- Time->Minute > 59 ||
- Time->Second > 59 ||
- Time->Nanosecond > 999999999 ||
- (!(Time->TimeZone == EFI_UNSPECIFIED_TIMEZONE || (Time->TimeZone >= -1440 && Time->TimeZone <= 1440))) ||
- (Time->Daylight & (~(EFI_TIME_ADJUST_DAYLIGHT | EFI_TIME_IN_DAYLIGHT)))
- ) {
- return EFI_INVALID_PARAMETER;
- }
-
- return EFI_SUCCESS;
-}
-
-BOOLEAN
-DayValid (
- IN EFI_TIME *Time
- )
-/*++
-
-Routine Description:
-
- TODO: Add function description
-
-Arguments:
-
- Time - TODO: add argument description
-
-Returns:
-
- TODO: add return values
-
---*/
-{
-
-
- if (Time->Day < 1 ||
- Time->Day > mDayOfMonth[Time->Month - 1] ||
- (Time->Month == 2 && (!IsLeapYear (Time) && Time->Day > 28))
- ) {
- return FALSE;
- }
-
- return TRUE;
-}
-
-BOOLEAN
-IsLeapYear (
- IN EFI_TIME *Time
- )
-/*++
-
-Routine Description:
-
- TODO: Add function description
-
-Arguments:
-
- Time - TODO: add argument description
-
-Returns:
-
- TODO: add return values
-
---*/
-{
- if (Time->Year % 4 == 0) {
- if (Time->Year % 100 == 0) {
- if (Time->Year % 400 == 0) {
- return TRUE;
- } else {
- return FALSE;
- }
- } else {
- return TRUE;
- }
- } else {
- return FALSE;
- }
-}
-
-VOID
-ConvertEfiTimeToRtcTime (
- IN EFI_TIME *Time,
- IN RTC_REGISTER_B RegisterB,
- IN UINT8 *Century
- )
-/*++
-
-Routine Description:
-
- Arguments:
-
-
-Returns:
---*/
-// TODO: Time - add argument and description to function comment
-// TODO: RegisterB - add argument and description to function comment
-// TODO: Century - add argument and description to function comment
-{
- BOOLEAN PM;
-
- PM = TRUE;
- //
- // Adjust hour field if RTC in in 12 hour mode
- //
- if (RegisterB.Bits.MIL == 0) {
- if (Time->Hour < 12) {
- PM = FALSE;
- }
-
- if (Time->Hour >= 13) {
- Time->Hour = (UINT8) (Time->Hour - 12);
- } else if (Time->Hour == 0) {
- Time->Hour = 12;
- }
- }
- //
- // Set the Time/Date/Daylight Savings values.
- //
- *Century = DecimaltoBcd ((UINT8) (Time->Year / 100));
-
- Time->Year = (UINT16) (Time->Year % 100);
-
- if (RegisterB.Bits.DM == 0) {
- Time->Year = DecimaltoBcd ((UINT8) Time->Year);
- Time->Month = DecimaltoBcd (Time->Month);
- Time->Day = DecimaltoBcd (Time->Day);
- Time->Hour = DecimaltoBcd (Time->Hour);
- Time->Minute = DecimaltoBcd (Time->Minute);
- Time->Second = DecimaltoBcd (Time->Second);
- }
- //
- // If we are in 12 hour mode and PM is set, then set bit 7 of the Hour field.
- //
- if (RegisterB.Bits.MIL == 0 && PM) {
- Time->Hour = (UINT8) (Time->Hour | 0x80);
- }
-}
-
-BOOLEAN
-IsWithinOneDay (
- IN EFI_TIME *From,
- IN EFI_TIME *To
- )
-/*++
-
-Routine Description:
-
- Judge whether two days are adjacent.
-
-Arguments:
-
- From - the first day
- To - the second day
-
-Returns:
-
- TRUE - The interval of two days are within one day.
- FALSE - The interval of two days exceed ony day or parameter error.
-
---*/
-{
- BOOLEAN Adjacent = FALSE;
-
- if (From->Year == To->Year) {
- if (From->Month == To->Month) {
- if ((From->Day + 1) == To->Day) {
- if ((CompareHMS(From, To) >= 0)) {
- Adjacent = TRUE;
- }
- } else if (From->Day == To->Day) {
- if ((CompareHMS(From, To) <= 0)) {
- Adjacent = TRUE;
- }
- }
- } else if (((From->Month + 1) == To->Month) && (To->Day == 1)) {
- if ((From->Month == 2) && !IsLeapYear(From)) {
- if (From->Day == 28) {
- if ((CompareHMS(From, To) >= 0)) {
- Adjacent = TRUE;
- }
- }
- } else if (From->Day == mDayOfMonth[From->Month - 1]) {
- if ((CompareHMS(From, To) >= 0)) {
- Adjacent = TRUE;
- }
- }
- }
- } else if (((From->Year + 1) == To->Year) &&
- (From->Month == 12) &&
- (From->Day == 31) &&
- (To->Month == 1) &&
- (To->Day == 1)) {
- if ((CompareHMS(From, To) >= 0)) {
- Adjacent = TRUE;
- }
- }
-
- return Adjacent;
-}
-
-UINT8
-DecimaltoBcd (
- IN UINT8 DecValue
- )
-/*++
-
-Routine Description:
-
- Arguments:
-
-Returns:
-
---*/
-// TODO: DecValue - add argument and description to function comment
-{
- UINTN High;
- UINTN Low;
-
- High = DecValue / 10;
- Low = DecValue - (High * 10);
-
- return (UINT8) (Low + (High << 4));
-}
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