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authorjljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524>2009-02-23 22:33:20 +0000
committerjljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524>2009-02-23 22:33:20 +0000
commitcff10e3e4e735d94b1b0b653566dbc6ae261b61c (patch)
treeed7b286a6336587c3c7c5d30371ab69adc46a9de /PcAtChipsetPkg
parent84042d3ea73598152be163c3f3d6601e1a3072ec (diff)
downloadedk2-platforms-cff10e3e4e735d94b1b0b653566dbc6ae261b61c.tar.xz
PcRtc: DuetPkg => PcAtChipsetPkg
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7616 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'PcAtChipsetPkg')
-rw-r--r--PcAtChipsetPkg/PcRtc/RealTimeClock.c1067
-rw-r--r--PcAtChipsetPkg/PcRtc/RealTimeClock.h491
-rw-r--r--PcAtChipsetPkg/PcRtc/RealTimeClock.inf56
-rw-r--r--PcAtChipsetPkg/PcRtc/RealTimeClockEntry.c166
4 files changed, 1780 insertions, 0 deletions
diff --git a/PcAtChipsetPkg/PcRtc/RealTimeClock.c b/PcAtChipsetPkg/PcRtc/RealTimeClock.c
new file mode 100644
index 0000000000..6666d48a37
--- /dev/null
+++ b/PcAtChipsetPkg/PcRtc/RealTimeClock.c
@@ -0,0 +1,1067 @@
+/*++
+
+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);
+
+ if (RtcTestCenturyRegister () == EFI_SUCCESS) {
+ Century = BcdToDecimal ((UINT8) (RtcRead (RTC_ADDRESS_CENTURY) & 0x7f));
+ } else {
+ Century = BcdToDecimal (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);
+
+ if (RtcTestCenturyRegister () == EFI_SUCCESS) {
+ Century = BcdToDecimal ((UINT8) (RtcRead (RTC_ADDRESS_CENTURY) & 0x7f));
+ } else {
+ Century = BcdToDecimal (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);
+ if (RtcTestCenturyRegister () == EFI_SUCCESS) {
+ Century = (UINT8) ((Century & 0x7f) | (RtcRead (RTC_ADDRESS_CENTURY) & 0x80));
+ }
+
+ 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);
+
+ if (RtcTestCenturyRegister () == EFI_SUCCESS) {
+ Century = BcdToDecimal ((UINT8) (RtcRead (RTC_ADDRESS_CENTURY) & 0x7f));
+ } else {
+ Century = BcdToDecimal (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;
+}
+
+UINT8
+BcdToDecimal (
+ IN UINT8 BcdValue
+ )
+/*++
+
+Routine Description:
+
+ Arguments:
+
+
+
+Returns:
+--*/
+// TODO: BcdValue - add argument and description to function comment
+{
+ UINTN High;
+ UINTN Low;
+
+ High = BcdValue >> 4;
+ Low = BcdValue - (High << 4);
+
+ return (UINT8) (Low + (High * 10));
+}
+
+EFI_STATUS
+RtcTestCenturyRegister (
+ VOID
+ )
+/*++
+
+Routine Description:
+
+ Arguments:
+
+
+
+Returns:
+--*/
+// TODO: EFI_SUCCESS - add return value to function comment
+// TODO: EFI_DEVICE_ERROR - add return value to function comment
+{
+ UINT8 Century;
+ UINT8 Temp;
+
+ Century = RtcRead (RTC_ADDRESS_CENTURY);
+ //
+ // RtcWrite (RTC_ADDRESS_CENTURY, 0x00);
+ //
+ Temp = (UINT8) (RtcRead (RTC_ADDRESS_CENTURY) & 0x7f);
+ RtcWrite (RTC_ADDRESS_CENTURY, Century);
+ if (Temp == 0x19 || Temp == 0x20) {
+ return EFI_SUCCESS;
+ }
+
+ return EFI_DEVICE_ERROR;
+}
+
+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 = BcdToDecimal ((UINT8) Time->Year);
+ Time->Month = BcdToDecimal (Time->Month);
+ Time->Day = BcdToDecimal (Time->Day);
+ Time->Hour = BcdToDecimal (Time->Hour);
+ Time->Minute = BcdToDecimal (Time->Minute);
+ Time->Second = BcdToDecimal (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));
+}
diff --git a/PcAtChipsetPkg/PcRtc/RealTimeClock.h b/PcAtChipsetPkg/PcRtc/RealTimeClock.h
new file mode 100644
index 0000000000..f157813cf7
--- /dev/null
+++ b/PcAtChipsetPkg/PcRtc/RealTimeClock.h
@@ -0,0 +1,491 @@
+/*++
+
+Copyright (c) 2005, 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.h
+
+Abstract:
+
+ Include for real time clock driver
+
+Revision History
+
+
+--*/
+
+#ifndef _RTC_H_
+#define _RTC_H_
+
+#include <FrameworkDxe.h>
+
+#include <Protocol/RealTimeClock.h>
+
+#include <Library/UefiLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/IoLib.h>
+#include <Library/TimerLib.h>
+#include <Library/BaseMemoryLib.h>
+
+typedef struct {
+ EFI_LOCK RtcLock;
+ UINT16 SavedTimeZone;
+ UINT8 Daylight;
+} PC_RTC_MODULE_GLOBALS;
+
+#define PCAT_RTC_ADDRESS_REGISTER 0x70
+#define PCAT_RTC_DATA_REGISTER 0x71
+
+//
+// Dallas DS12C887 Real Time Clock
+//
+#define RTC_ADDRESS_SECONDS 0 // R/W Range 0..59
+#define RTC_ADDRESS_SECONDS_ALARM 1 // R/W Range 0..59
+#define RTC_ADDRESS_MINUTES 2 // R/W Range 0..59
+#define RTC_ADDRESS_MINUTES_ALARM 3 // R/W Range 0..59
+#define RTC_ADDRESS_HOURS 4 // R/W Range 1..12 or 0..23 Bit 7 is AM/PM
+#define RTC_ADDRESS_HOURS_ALARM 5 // R/W Range 1..12 or 0..23 Bit 7 is AM/PM
+#define RTC_ADDRESS_DAY_OF_THE_WEEK 6 // R/W Range 1..7
+#define RTC_ADDRESS_DAY_OF_THE_MONTH 7 // R/W Range 1..31
+#define RTC_ADDRESS_MONTH 8 // R/W Range 1..12
+#define RTC_ADDRESS_YEAR 9 // R/W Range 0..99
+#define RTC_ADDRESS_REGISTER_A 10 // R/W[0..6] R0[7]
+#define RTC_ADDRESS_REGISTER_B 11 // R/W
+#define RTC_ADDRESS_REGISTER_C 12 // RO
+#define RTC_ADDRESS_REGISTER_D 13 // RO
+#define RTC_ADDRESS_CENTURY 50 // R/W Range 19..20 Bit 8 is R/W
+//
+// Date and time initial values.
+// They are used if the RTC values are invalid during driver initialization
+//
+#define RTC_INIT_SECOND 0
+#define RTC_INIT_MINUTE 0
+#define RTC_INIT_HOUR 0
+#define RTC_INIT_DAY 1
+#define RTC_INIT_MONTH 1
+#define RTC_INIT_YEAR 2001
+
+//
+// Register initial values
+//
+#define RTC_INIT_REGISTER_A 0x26
+#define RTC_INIT_REGISTER_B 0x02
+#define RTC_INIT_REGISTER_D 0x0
+
+#pragma pack(1)
+//
+// Register A
+//
+typedef struct {
+ UINT8 RS : 4; // Rate Selection Bits
+ UINT8 DV : 3; // Divisor
+ UINT8 UIP : 1; // Update in progress
+} RTC_REGISTER_A_BITS;
+
+typedef union {
+ RTC_REGISTER_A_BITS Bits;
+ UINT8 Data;
+} RTC_REGISTER_A;
+
+//
+// Register B
+//
+typedef struct {
+ UINT8 DSE : 1; // 0 - Daylight saving disabled 1 - Daylight savings enabled
+ UINT8 MIL : 1; // 0 - 12 hour mode 1 - 24 hour mode
+ UINT8 DM : 1; // 0 - BCD Format 1 - Binary Format
+ UINT8 SQWE : 1; // 0 - Disable SQWE output 1 - Enable SQWE output
+ UINT8 UIE : 1; // 0 - Update INT disabled 1 - Update INT enabled
+ UINT8 AIE : 1; // 0 - Alarm INT disabled 1 - Alarm INT Enabled
+ UINT8 PIE : 1; // 0 - Periodic INT disabled 1 - Periodic INT Enabled
+ UINT8 SET : 1; // 0 - Normal operation. 1 - Updates inhibited
+} RTC_REGISTER_B_BITS;
+
+typedef union {
+ RTC_REGISTER_B_BITS Bits;
+ UINT8 Data;
+} RTC_REGISTER_B;
+
+//
+// Register C
+//
+typedef struct {
+ UINT8 Reserved : 4; // Read as zero. Can not be written.
+ UINT8 UF : 1; // Update End Interrupt Flag
+ UINT8 AF : 1; // Alarm Interrupt Flag
+ UINT8 PF : 1; // Periodic Interrupt Flag
+ UINT8 IRQF : 1; // Iterrupt Request Flag = PF & PIE | AF & AIE | UF & UIE
+} RTC_REGISTER_C_BITS;
+
+typedef union {
+ RTC_REGISTER_C_BITS Bits;
+ UINT8 Data;
+} RTC_REGISTER_C;
+
+//
+// Register D
+//
+typedef struct {
+ UINT8 Reserved : 7; // Read as zero. Can not be written.
+ UINT8 VRT : 1; // Valid RAM and Time
+} RTC_REGISTER_D_BITS;
+
+typedef union {
+ RTC_REGISTER_D_BITS Bits;
+ UINT8 Data;
+} RTC_REGISTER_D;
+
+#pragma pack()
+
+EFI_STATUS
+PcRtcInit (
+ IN PC_RTC_MODULE_GLOBALS *Global
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Global - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+;
+
+EFI_STATUS
+PcRtcSetTime (
+ IN EFI_TIME *Time,
+ IN PC_RTC_MODULE_GLOBALS *Global
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Time - TODO: add argument description
+ Global - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+;
+
+EFI_STATUS
+PcRtcGetTime (
+ OUT EFI_TIME *Time,
+ IN EFI_TIME_CAPABILITIES *Capabilities,
+ IN PC_RTC_MODULE_GLOBALS *Global
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Time - TODO: add argument description
+ Capabilities - TODO: add argument description
+ Global - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+;
+
+EFI_STATUS
+EFIAPI
+PcRtcSetWakeupTime (
+ IN BOOLEAN Enable,
+ OUT EFI_TIME *Time,
+ IN PC_RTC_MODULE_GLOBALS *Global
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Enable - TODO: add argument description
+ Time - TODO: add argument description
+ Global - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+;
+
+EFI_STATUS
+EFIAPI
+PcRtcGetWakeupTime (
+ OUT BOOLEAN *Enabled,
+ OUT BOOLEAN *Pending,
+ OUT EFI_TIME *Time,
+ IN PC_RTC_MODULE_GLOBALS *Global
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Enabled - TODO: add argument description
+ Pending - TODO: add argument description
+ Time - TODO: add argument description
+ Global - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+;
+
+EFI_STATUS
+EFIAPI
+InitializePcRtc (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ ImageHandle - TODO: add argument description
+ SystemTable - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+;
+
+UINT8
+BcdToDecimal (
+ IN UINT8 BcdValue
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ BcdValue - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+;
+
+EFI_STATUS
+RtcTimeFieldsValid (
+ IN EFI_TIME *Time
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Time - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+;
+
+UINT8
+DecimaltoBcd (
+ IN UINT8 DecValue
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ DecValue - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+;
+
+VOID
+ConvertEfiTimeToRtcTime (
+ IN EFI_TIME *Time,
+ IN RTC_REGISTER_B RegisterB,
+ IN UINT8 *Century
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Time - TODO: add argument description
+ RegisterB - TODO: add argument description
+ Century - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+;
+
+EFI_STATUS
+RtcTestCenturyRegister (
+ VOID
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ None
+
+Returns:
+
+ TODO: add return values
+
+--*/
+;
+
+VOID
+ConvertRtcTimeToEfiTime (
+ IN EFI_TIME *Time,
+ IN RTC_REGISTER_B RegisterB
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Time - TODO: add argument description
+ RegisterB - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+;
+
+EFI_STATUS
+RtcWaitToUpdate (
+ UINTN Timeout
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Timeout - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+;
+
+UINT8
+RtcSaveContext (
+ IN PC_RTC_MODULE_GLOBALS *Global
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Global - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+;
+
+VOID
+RtcRestoreContext (
+ IN UINT8 SavedAddressRegister,
+ IN PC_RTC_MODULE_GLOBALS *Global
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ SavedAddressRegister - TODO: add argument description
+ Global - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+;
+
+#endif
diff --git a/PcAtChipsetPkg/PcRtc/RealTimeClock.inf b/PcAtChipsetPkg/PcRtc/RealTimeClock.inf
new file mode 100644
index 0000000000..e854f1c8cf
--- /dev/null
+++ b/PcAtChipsetPkg/PcRtc/RealTimeClock.inf
@@ -0,0 +1,56 @@
+#/*++
+#
+# Copyright (c) 2005 - 2008, 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:
+#
+# Abstract:
+#
+#--*/
+
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = RealTimeClock
+ FILE_GUID = 378D7B65-8DA9-4773-B6E4-A47826A833E1
+ MODULE_TYPE = DXE_RUNTIME_DRIVER
+ VERSION_STRING = 1.0
+ EDK_RELEASE_VERSION = 0x00020000
+ EFI_SPECIFICATION_VERSION = 0x00020000
+
+ ENTRY_POINT = InitializeRealTimeClock
+
+[Packages]
+ MdePkg/MdePkg.dec
+ IntelFrameworkPkg/IntelFrameworkPkg.dec
+ DuetPkg/DuetPkg.dec
+
+[LibraryClasses]
+ UefiDriverEntryPoint
+ UefiBootServicesTableLib
+ UefiLib
+ IoLib
+ TimerLib
+ BaseMemoryLib
+
+[Sources.common]
+ RealTimeClock.c
+ RealTimeClock.h
+ RealTimeClockEntry.c
+
+
+[Protocols]
+ gEfiCpuArchProtocolGuid
+ gEfiMetronomeArchProtocolGuid
+ gEfiCpuIoProtocolGuid
+ gEfiRealTimeClockArchProtocolGuid
+
+[Depex]
+ gEfiCpuArchProtocolGuid AND gEfiMetronomeArchProtocolGuid AND gEfiCpuIoProtocolGuid \ No newline at end of file
diff --git a/PcAtChipsetPkg/PcRtc/RealTimeClockEntry.c b/PcAtChipsetPkg/PcRtc/RealTimeClockEntry.c
new file mode 100644
index 0000000000..7c5354835c
--- /dev/null
+++ b/PcAtChipsetPkg/PcRtc/RealTimeClockEntry.c
@@ -0,0 +1,166 @@
+/*++
+
+Copyright (c) 2009, 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.
+
+
+--*/
+
+#include "RealTimeClock.h"
+
+PC_RTC_MODULE_GLOBALS mModuleGlobal;
+
+EFI_STATUS
+EFIAPI
+PcRtcEfiGetTime (
+ OUT EFI_TIME *Time,
+ OUT EFI_TIME_CAPABILITIES *Capabilities
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Time - TODO: add argument description
+ Capabilities - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+{
+ return PcRtcGetTime (Time, Capabilities, &mModuleGlobal);
+}
+
+EFI_STATUS
+EFIAPI
+PcRtcEfiSetTime (
+ IN EFI_TIME *Time
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Time - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+{
+ return PcRtcSetTime (Time, &mModuleGlobal);
+}
+
+EFI_STATUS
+EFIAPI
+PcRtcEfiGetWakeupTime (
+ OUT BOOLEAN *Enabled,
+ OUT BOOLEAN *Pending,
+ OUT EFI_TIME *Time
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Enabled - TODO: add argument description
+ Pending - TODO: add argument description
+ Time - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+{
+ return PcRtcGetWakeupTime (Enabled, Pending, Time, &mModuleGlobal);
+}
+
+EFI_STATUS
+EFIAPI
+PcRtcEfiSetWakeupTime (
+ IN BOOLEAN Enabled,
+ OUT EFI_TIME *Time
+ )
+/*++
+
+Routine Description:
+
+ TODO: Add function description
+
+Arguments:
+
+ Enabled - TODO: add argument description
+ Time - TODO: add argument description
+
+Returns:
+
+ TODO: add return values
+
+--*/
+{
+ return PcRtcSetWakeupTime (Enabled, Time, &mModuleGlobal);
+}
+
+EFI_STATUS
+EFIAPI
+InitializeRealTimeClock (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+/*++
+
+Routine Description:
+
+ Arguments:
+
+
+
+Returns:
+--*/
+// TODO: ImageHandle - add argument and description to function comment
+// TODO: SystemTable - add argument and description to function comment
+{
+ EFI_STATUS Status;
+ EFI_HANDLE NewHandle;
+
+ EfiInitializeLock (&mModuleGlobal.RtcLock, TPL_HIGH_LEVEL);
+
+ Status = PcRtcInit (&mModuleGlobal);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ SystemTable->RuntimeServices->GetTime = PcRtcEfiGetTime;
+ SystemTable->RuntimeServices->SetTime = PcRtcEfiSetTime;
+ SystemTable->RuntimeServices->GetWakeupTime = PcRtcEfiGetWakeupTime;
+ SystemTable->RuntimeServices->SetWakeupTime = PcRtcEfiSetWakeupTime;
+
+ NewHandle = NULL;
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &NewHandle,
+ &gEfiRealTimeClockArchProtocolGuid,
+ NULL,
+ NULL
+ );
+
+ return Status;
+}