Add M41T83RealTimeClockLib for RTC.
Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ming Huang ming.huang@linaro.org --- Platform/Hisilicon/D06/D06.dsc | 1 + Silicon/Hisilicon/Library/M41T83RealTimeClockLib/M41T83RealTimeClockLib.inf | 46 ++ Silicon/Hisilicon/Library/M41T83RealTimeClockLib/M41T83RealTimeClock.h | 158 ++++++ Silicon/Hisilicon/Library/M41T83RealTimeClockLib/M41T83RealTimeClockLib.c | 564 ++++++++++++++++++++ 4 files changed, 769 insertions(+)
diff --git a/Platform/Hisilicon/D06/D06.dsc b/Platform/Hisilicon/D06/D06.dsc index d14fce1159..27358f8c78 100644 --- a/Platform/Hisilicon/D06/D06.dsc +++ b/Platform/Hisilicon/D06/D06.dsc @@ -65,6 +65,7 @@ CpldIoLib|Silicon/Hisilicon/Library/CpldIoLib/CpldIoLib.inf
TimeBaseLib|EmbeddedPkg/Library/TimeBaseLib/TimeBaseLib.inf + RealTimeClockLib|Silicon/Hisilicon/Library/M41T83RealTimeClockLib/M41T83RealTimeClockLib.inf
CapsuleLib|MdeModulePkg/Library/DxeCapsuleLibNull/DxeCapsuleLibNull.inf GenericBdsLib|IntelFrameworkModulePkg/Library/GenericBdsLib/GenericBdsLib.inf diff --git a/Silicon/Hisilicon/Library/M41T83RealTimeClockLib/M41T83RealTimeClockLib.inf b/Silicon/Hisilicon/Library/M41T83RealTimeClockLib/M41T83RealTimeClockLib.inf new file mode 100644 index 0000000000..e0bf6b3f24 --- /dev/null +++ b/Silicon/Hisilicon/Library/M41T83RealTimeClockLib/M41T83RealTimeClockLib.inf @@ -0,0 +1,46 @@ +#/** @file +# +# Copyright (c) 2018, Hisilicon Limited. All rights reserved.<BR> +# Copyright (c) 2018, Linaro Limited. All rights reserved.<BR> +# +# 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. +# +#**/ + +[Defines] + INF_VERSION = 0x0001001A + BASE_NAME = M41T83RealTimeClockLib + FILE_GUID = 470DFB96-E205-4515-A75E-2E60F853E79D + MODULE_TYPE = BASE + VERSION_STRING = 1.0 + LIBRARY_CLASS = RealTimeClockLib + +[Sources.common] + M41T83RealTimeClockLib.c + +[Packages] + EmbeddedPkg/EmbeddedPkg.dec + MdePkg/MdePkg.dec + Platform/Hisilicon/D06/D06.dec + Silicon/Hisilicon/HisiPkg.dec + +[LibraryClasses] + BaseMemoryLib + CpldIoLib + DebugLib + I2CLib + IoLib + PcdLib + TimeBaseLib + TimerLib + UefiLib + UefiRuntimeLib # Use EFiAtRuntime to check stage + +[Depex] + gEfiCpuArchProtocolGuid diff --git a/Silicon/Hisilicon/Library/M41T83RealTimeClockLib/M41T83RealTimeClock.h b/Silicon/Hisilicon/Library/M41T83RealTimeClockLib/M41T83RealTimeClock.h new file mode 100644 index 0000000000..ed10099bf3 --- /dev/null +++ b/Silicon/Hisilicon/Library/M41T83RealTimeClockLib/M41T83RealTimeClock.h @@ -0,0 +1,158 @@ +/** @file + + Copyright (c) 2018, Hisilicon Limited. All rights reserved.<BR> + Copyright (c) 2018, Linaro Limited. All rights reserved.<BR> + + 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. + +**/ + +#ifndef __M41T83_REAL_TIME_CLOCK_H__ +#define __M41T83_REAL_TIME_CLOCK_H__ + +// The delay is need for cpld and I2C. This is a empirical value. MemoryFance is no need. +#define RTC_DELAY_30_MS 30000 +// The delay is need for cpld and I2C. This is a empirical value. MemoryFance is no need. +#define RTC_DELAY_1000_MACROSECOND 1000 +// The delay is need for cpld and I2C. This is a empirical value. MemoryFance is no need. +#define RTC_DELAY_2_MACROSECOND 2 + +#define M41T83_REGADDR_DOTSECONDS 0x00 +#define M41T83_REGADDR_SECONDS 0x01 +#define M41T83_REGADDR_MINUTES 0x02 +#define M41T83_REGADDR_HOURS 0x03 +#define M41T83_REGADDR_WEEK_DAY 0x04 +#define M41T83_REGADDR_DAY 0x05 +#define M41T83_REGADDR_MONTH 0x06 +#define M41T83_REGADDR_YEAR 0x07 +#define M41T83_REGADDR_ALARM1SEC 0x0E +#define M41T83_REGADDR_ALARM1MIN 0x0D +#define M41T83_REGADDR_ALARM1HOUR 0x0C +#define M41T83_REGADDR_ALARM1DATE 0x0B +#define M41T83_REGADDR_ALARM1MONTH 0x0A + +#define M41T83_REGADDR_TIMERCONTROL 0x11 + +#define M41T83_REGADDR_ALARM2SEC 0x18 +#define M41T83_REGADDR_ALARM2MIN 0x17 +#define M41T83_REGADDR_ALARM2HOUR 0x16 +#define M41T83_REGADDR_ALARM2DATE 0x15 +#define M41T83_REGADDR_ALARM2MONTH 0x14 + +typedef union { + struct { + UINT8 TD0:1; + UINT8 TD1:1; + UINT8 RSV:3; + UINT8 TIE:1; + UINT8 TITP:1; + UINT8 TE:1; + } Bits; + UINT8 Uint8; +} RTC_M41T83_TIMERCONTROL; + +typedef union { + struct { + UINT8 MicroSeconds; + } Bits; + UINT8 Uint8; +} RTC_M41T83_DOTSECOND; + +typedef union { + struct{ + UINT8 Seconds:7; + UINT8 ST:1; + } Bits; + UINT8 Uint8; +} RTC_M41T83_SECOND; + +typedef union { + struct { + UINT8 Minutes:7; + UINT8 Rsv:1; + } Bits; + UINT8 Uint8; +} RTC_M41T83_MINUTE; + +typedef union { + struct { + UINT8 Hours:6; + UINT8 CB:2; + } Bits; + UINT8 Uint8; +} RTC_M41T83_HOUR; + +typedef union { + struct{ + UINT8 Days:3; + UINT8 Rsv:5; + } Bits; + UINT8 Uint8; +} RTC_M41T83_WEEK_DAY; + +typedef union { + struct{ + UINT8 Days:6; + UINT8 Rsv:2; + } Bits; + UINT8 Uint8; +} RTC_M41T83_MONTH_DAY; + +typedef union { + struct { + UINT8 Months:5; + UINT8 Rsv:3; + } Bits; + UINT8 Uint8; +} RTC_M41T83_MONTH; + +typedef union { + struct { + UINT8 Years:8; + } Bits; + UINT8 Uint8; +} RTC_M41T83_YEAR; + +typedef union { + struct { + UINT8 Second:7; + UINT8 RPT11:1; + } Bits; + UINT8 Uint8; +} RTC_M41T83_ALARM1SEC; + +typedef union { + struct { + UINT8 Minute:7; + UINT8 RPT12:1; + } Bits; + UINT8 Uint8; +} RTC_M41T83_ALARM1MIN; + +typedef union { + struct { + UINT8 Hour:6; + UINT8 HT:1; + UINT8 RPT13:1; + } Bits; + UINT8 Uint8; +} RTC_M41T83_ALARM1HOUR; + +typedef struct { + RTC_M41T83_DOTSECOND DotSecond; + RTC_M41T83_SECOND Second; + RTC_M41T83_MINUTE Minute; + RTC_M41T83_HOUR Hour; + RTC_M41T83_WEEK_DAY WeekDay; + RTC_M41T83_MONTH_DAY Day; + RTC_M41T83_MONTH Month; + RTC_M41T83_YEAR Year; +} RTC_M41T83_TIME; + +#endif diff --git a/Silicon/Hisilicon/Library/M41T83RealTimeClockLib/M41T83RealTimeClockLib.c b/Silicon/Hisilicon/Library/M41T83RealTimeClockLib/M41T83RealTimeClockLib.c new file mode 100644 index 0000000000..eabe8dc0f3 --- /dev/null +++ b/Silicon/Hisilicon/Library/M41T83RealTimeClockLib/M41T83RealTimeClockLib.c @@ -0,0 +1,564 @@ +/** @file + + Copyright (c) 2018, Hisilicon Limited. All rights reserved.<BR> + Copyright (c) 2018, Linaro Limited. All rights reserved.<BR> + + 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 <Uefi.h> +#include <PiDxe.h> +#include <Library/BaseLib.h> +#include <Library/BaseMemoryLib.h> +#include <Library/CpldD06.h> +#include <Library/CpldIoLib.h> +#include <Library/DebugLib.h> +#include <Library/I2CLib.h> +#include <Library/IoLib.h> +#include <Library/MemoryAllocationLib.h> +#include <Library/PcdLib.h> +#include <Library/TimeBaseLib.h> +#include <Library/TimerLib.h> +#include <Library/UefiLib.h> +#include <Library/UefiBootServicesTableLib.h> +#include <Library/UefiRuntimeLib.h> +#include <Library/UefiRuntimeServicesTableLib.h> +#include <Protocol/RealTimeClock.h> +#include "M41T83RealTimeClock.h" + +extern I2C_DEVICE gRtcDevice; + +STATIC EFI_LOCK mRtcLock; + +EFI_STATUS +SwitchRtcI2cChannelAndLock ( + VOID + ) +{ + UINT8 Temp; + UINT8 Count; + + for (Count = 0; Count < 100; Count++) { + // To get the other side's state is idle first + Temp = ReadCpldReg (CPLD_I2C_SWITCH_FLAG); + if ((Temp & BIT3) != 0) { + (VOID) MicroSecondDelay (RTC_DELAY_30_MS); + // Try 100 times, if BMC has not released the bus, return preemption failed + if (Count == 99) { + if (!EfiAtRuntime ()) { + DEBUG ((DEBUG_ERROR, "[%a]:[%dL] Clear cpu_i2c_rtc_state 100 times fail!\n", + __FUNCTION__, __LINE__)); + } + return EFI_DEVICE_ERROR; + } + continue; + } + + // if BMC free the bus, can be set 1 preemption + Temp = ReadCpldReg (CPLD_I2C_SWITCH_FLAG); + Temp = Temp | CPU_GET_I2C_CONTROL; + // CPU occupied RTC I2C State + WriteCpldReg (CPLD_I2C_SWITCH_FLAG, Temp); + (VOID) MicroSecondDelay (RTC_DELAY_2_MACROSECOND); + Temp = ReadCpldReg (CPLD_I2C_SWITCH_FLAG); + // Is preempt success + if(CPU_GET_I2C_CONTROL == (Temp & CPU_GET_I2C_CONTROL)) { + break; + } + if (Count == 99) { + if (!EfiAtRuntime ()) { + DEBUG((DEBUG_ERROR, "[%a]:[%dL] Clear cpu_i2c_rtc_state fail !!! \n", + __FUNCTION__, __LINE__)); + } + return EFI_DEVICE_ERROR; + } + (VOID) MicroSecondDelay (RTC_DELAY_30_MS); + } + + //Polling BMC RTC I2C status + for (Count = 0; Count < 100; Count++) { + Temp = ReadCpldReg (CPLD_I2C_SWITCH_FLAG); + if ((Temp & BIT3) == 0) { + return EFI_SUCCESS; + } + (VOID) MicroSecondDelay (RTC_DELAY_30_MS); + } + + //If the BMC occupies the RTC I2C Channel, write back the CPU side is idle + // or the subsequent BMC will not preempt + Temp = ReadCpldReg (CPLD_I2C_SWITCH_FLAG); + Temp = Temp & (~CPU_GET_I2C_CONTROL); + WriteCpldReg (CPLD_I2C_SWITCH_FLAG, Temp); + + return EFI_NOT_READY; +} + + +/** + Read RTC content through its registers. + + @param Address Address offset of RTC data. + @param Size Size of RTC data to read. + @param Data The data of UINT8 type read from RTC. + + @return EFI_STATUS +**/ +EFI_STATUS +RtcRead ( + IN UINT8 Address, + IN UINT8 Size, + OUT UINT8 *Data + ) +{ + EFI_STATUS Status; + + Status = I2CRead (&gRtcDevice, Address, Size, Data); + MicroSecondDelay (RTC_DELAY_1000_MACROSECOND); + return Status; +} + +/** + Write RTC through its registers. + + @param Address Address offset of RTC data. + @param Size Size of RTC data to write. + @param Data The data of UINT8 type write from RTC. + + @return EFI_STATUS +**/ +EFI_STATUS +RtcWrite ( + IN UINT8 Address, + IN UINT8 Size, + UINT8 *Data + ) +{ + EFI_STATUS Status; + + Status = I2CWrite (&gRtcDevice, Address, Size, Data); + MicroSecondDelay (RTC_DELAY_1000_MACROSECOND); + return Status; +} + +VOID +ReleaseOwnershipOfRtc ( + VOID + ) +{ + UINT8 Temp; + + Temp = ReadCpldReg (CPLD_I2C_SWITCH_FLAG); + Temp = Temp & ~CPU_GET_I2C_CONTROL; + WriteCpldReg (CPLD_I2C_SWITCH_FLAG, Temp); +} + + +EFI_STATUS +InitializeM41T83 ( + VOID + ) +{ + EFI_STATUS Status; + RTC_M41T83_ALARM1HOUR Alarm1Hour; + RTC_M41T83_SECOND Second; + + // Acquire RTC Lock to make access to RTC atomic + if (!EfiAtRuntime ()) { + EfiAcquireLock (&mRtcLock); + } + + Status = I2CInit (gRtcDevice.Socket, gRtcDevice.Port, Normal); + MicroSecondDelay (RTC_DELAY_1000_MACROSECOND); + if (EFI_ERROR (Status)) { + if (!EfiAtRuntime ()) { + EfiReleaseLock (&mRtcLock); + } + return Status; + } + + Status = SwitchRtcI2cChannelAndLock (); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_ERROR, "Get i2c preemption failed: %r\n", Status)); + if (!EfiAtRuntime ()) { + EfiReleaseLock (&mRtcLock); + } + return Status; + } + + MicroSecondDelay(RTC_DELAY_1000_MACROSECOND); + + // Set ST at Power up to clear Oscillator fail detection(OF) + Status = RtcRead (M41T83_REGADDR_SECONDS, 1, &Second.Uint8); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_ERROR, "[%a]:[%dL] Status : %r\n", + __FUNCTION__, __LINE__, Status)); + } + Second.Bits.ST= 1; + Status = RtcWrite (M41T83_REGADDR_SECONDS, 1, &Second.Uint8); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_ERROR, "[%a]:[%dL] Status : %r\n", + __FUNCTION__, __LINE__, Status)); + goto Exit; + } + Status = RtcRead (M41T83_REGADDR_SECONDS, 1, &Second.Uint8); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_ERROR, "[%a]:[%dL] Status : %r\n", + __FUNCTION__, __LINE__, Status)); + } + Second.Bits.ST= 0; + Status = RtcWrite (M41T83_REGADDR_SECONDS, 1, &Second.Uint8); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_ERROR, "[%a]:[%dL] Status : %r\n", + __FUNCTION__, __LINE__, Status)); + goto Exit; + } + + // Clear HT bit to enanle write to the RTC registers (addresses 0-7) + Status = RtcRead (M41T83_REGADDR_ALARM1HOUR, 1, &Alarm1Hour.Uint8); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_ERROR, "[%a]:[%dL] Status : %r\n", + __FUNCTION__, __LINE__, Status)); + } + Alarm1Hour.Bits.HT = 0; + Status = RtcWrite (M41T83_REGADDR_ALARM1HOUR, 1, &Alarm1Hour.Uint8); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_ERROR, "[%a]:[%dL] Status : %r\n", + __FUNCTION__, __LINE__, Status)); + goto Exit; + } + +Exit: + // Release RTC Lock. + ReleaseOwnershipOfRtc (); + if (!EfiAtRuntime ()) { + EfiReleaseLock (&mRtcLock); + } + return Status; +} + +/** + Sets the current local time and date information. + + @param Time A pointer to the current time. + + @retval EFI_SUCCESS The operation completed successfully. + @retval EFI_INVALID_PARAMETER A time field is out of range. + @retval EFI_DEVICE_ERROR The time could not be set due due to hardware error. + +**/ +EFI_STATUS +EFIAPI +LibSetTime ( + IN EFI_TIME *Time + ) +{ + EFI_STATUS Status = EFI_SUCCESS; + RTC_M41T83_TIME BcdTime; + UINT16 CenturyBase = 2000; + UINTN LineNum = 0; + + if (NULL == Time) { + return EFI_INVALID_PARAMETER; + } + + if (!IsTimeValid (Time)) { + if (!EfiAtRuntime ()) { + DEBUG ((DEBUG_ERROR, "[%a]:[%dL] Status : %r\n", + __FUNCTION__, __LINE__, Status)); + DEBUG ((DEBUG_ERROR, "Now RTC Time is : %04d-%02d-%02d %02d:%02d:%02d\n", + Time->Year, Time->Month, Time->Day, Time->Hour, Time->Minute, Time->Second + )); + } + return EFI_INVALID_PARAMETER; + } + + Status = SwitchRtcI2cChannelAndLock (); + if (EFI_ERROR (Status)) { + return Status; + } + (VOID)MicroSecondDelay (RTC_DELAY_1000_MACROSECOND); + + SetMem (&BcdTime, sizeof (RTC_M41T83_TIME), 0); + + // Acquire RTC Lock to make access to RTC atomic + if (!EfiAtRuntime ()) { + EfiAcquireLock (&mRtcLock); + } + + BcdTime.Second.Bits.Seconds = DecimalToBcd8 (Time->Second); + BcdTime.Minute.Bits.Minutes = DecimalToBcd8 (Time->Minute); + BcdTime.Hour.Bits.Hours = DecimalToBcd8 (Time->Hour); + BcdTime.Day.Bits.Days = DecimalToBcd8 (Time->Day); + BcdTime.Month.Bits.Months = DecimalToBcd8 (Time->Month); + BcdTime.Year.Bits.Years = DecimalToBcd8 (Time->Year % 100); + BcdTime.Hour.Bits.CB = (Time->Year - CenturyBase) / 100 % 10; + + Status = RtcWrite (M41T83_REGADDR_DOTSECONDS, 1, &BcdTime.DotSecond.Uint8); + if (EFI_ERROR (Status)) { + LineNum = __LINE__; + goto Exit; + } + Status = RtcWrite (M41T83_REGADDR_SECONDS, 1, &BcdTime.Second.Uint8); + if (EFI_ERROR (Status)) { + LineNum = __LINE__; + goto Exit; + } + Status = RtcWrite (M41T83_REGADDR_MINUTES, 1, &BcdTime.Minute.Uint8); + if (EFI_ERROR (Status)) { + LineNum = __LINE__; + goto Exit; + } + Status = RtcWrite (M41T83_REGADDR_HOURS, 1, &BcdTime.Hour.Uint8); + if (EFI_ERROR (Status)) { + LineNum = __LINE__; + goto Exit; + } + Status = RtcWrite (M41T83_REGADDR_DAY, 1, &BcdTime.Day.Uint8); + if (EFI_ERROR (Status)) { + LineNum = __LINE__; + goto Exit; + } + Status = RtcWrite (M41T83_REGADDR_MONTH, 1, &BcdTime.Month.Uint8); + if (EFI_ERROR (Status)) { + LineNum = __LINE__; + goto Exit; + } + Status = RtcWrite (M41T83_REGADDR_YEAR, 1, &BcdTime.Year.Uint8); + if (EFI_ERROR (Status)) { + LineNum = __LINE__; + goto Exit; + } + +Exit: + ReleaseOwnershipOfRtc (); + // Release RTC Lock. + if (!EfiAtRuntime ()) { + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_ERROR, "[%a]:[%dL] Status : %r\n", + __FUNCTION__, LineNum, Status)); + } + EfiReleaseLock (&mRtcLock); + } + return Status; +} + + +/** + Returns the current time and date information, and the time-keeping capabilities + of the hardware platform. + + @param Time A pointer to storage to receive a snapshot of the current time. + @param Capabilities An optional pointer to a buffer to receive the real time clock + device's capabilities. + + @retval EFI_SUCCESS The operation completed successfully. + @retval EFI_INVALID_PARAMETER Time is NULL. + @retval EFI_DEVICE_ERROR The time could not be retrieved due to hardware error. + @retval EFI_SECURITY_VIOLATION The time could not be retrieved due to an authentication failure. +**/ +EFI_STATUS +EFIAPI +LibGetTime ( + OUT EFI_TIME *Time, + OUT EFI_TIME_CAPABILITIES *Capabilities + ) +{ + EFI_STATUS Status = EFI_SUCCESS; + RTC_M41T83_TIME BcdTime; + UINT16 CenturyBase = 2000; + UINTN LineNum = 0; + BOOLEAN IsTimeInvalid = FALSE; + UINT8 TimeTemp[7] = {0}; + + // Ensure Time is a valid pointer + if (Time == NULL) { + return EFI_INVALID_PARAMETER; + } + + Status = SwitchRtcI2cChannelAndLock (); + if (EFI_ERROR (Status)) { + return Status; + } + + MicroSecondDelay(RTC_DELAY_1000_MACROSECOND); + + SetMem (&BcdTime, sizeof (RTC_M41T83_TIME), 0); + SetMem (Time , sizeof (EFI_TIME), 0); + + // Acquire RTC Lock to make access to RTC atomic + if (!EfiAtRuntime ()) { + EfiAcquireLock (&mRtcLock); + } + + Status = RtcRead (M41T83_REGADDR_SECONDS, 7, TimeTemp); + if (EFI_ERROR (Status)) { + LineNum = __LINE__; + goto Exit; + } + + BcdTime.Second.Uint8 = TimeTemp[0]; //SECONDS + BcdTime.Minute.Uint8 = TimeTemp[1]; //MINUTES + BcdTime.Hour.Uint8 = TimeTemp[2]; //HOURS + BcdTime.Day.Uint8 = TimeTemp[4]; //DAY + BcdTime.Month.Uint8 = TimeTemp[5]; //MONTH + BcdTime.Year.Uint8 = TimeTemp[6]; //Year + + Time->Year = BcdToDecimal8 (BcdTime.Year.Bits.Years); + Time->Year += CenturyBase + BcdTime.Hour.Bits.CB * 100; + Time->Month = BcdToDecimal8 (BcdTime.Month.Bits.Months); + Time->Day = BcdToDecimal8 (BcdTime.Day.Bits.Days); + Time->Hour = BcdToDecimal8 (BcdTime.Hour.Bits.Hours); + Time->Minute = BcdToDecimal8 (BcdTime.Minute.Bits.Minutes); + Time->Second = BcdToDecimal8 (BcdTime.Second.Bits.Seconds); + Time->TimeZone = EFI_UNSPECIFIED_TIMEZONE; + + if (!IsTimeValid (Time)) { + Status = EFI_DEVICE_ERROR; + LineNum = __LINE__; + IsTimeInvalid = TRUE; + goto Exit; + } + +Exit: + ReleaseOwnershipOfRtc (); + // Release RTC Lock. + if (!EfiAtRuntime ()) { + if (EFI_ERROR (Status)) { + if (IsTimeInvalid == TRUE) { + DEBUG((DEBUG_ERROR, "%a(%d) Time invalid.\r\n",__FUNCTION__, LineNum)); + } else { + DEBUG ((DEBUG_ERROR, "[%a]:[%dL] Status : %r\n", + __FUNCTION__, LineNum, Status)); + } + } + EfiReleaseLock (&mRtcLock); + } + return Status; +} + + +/** + Returns the current wakeup alarm clock setting. + + @param Enabled Indicates if the alarm is currently enabled or disabled. + @param Pending Indicates if the alarm signal is pending and requires acknowledgement. + @param Time The current alarm setting. + + @retval EFI_SUCCESS The alarm settings were returned. + @retval EFI_INVALID_PARAMETER Any parameter is NULL. + @retval EFI_DEVICE_ERROR The wakeup time could not be retrieved due to a hardware error. + +**/ +EFI_STATUS +EFIAPI +LibGetWakeupTime ( + OUT BOOLEAN *Enabled, + OUT BOOLEAN *Pending, + OUT EFI_TIME *Time + ) +{ + // Not a required feature + return EFI_UNSUPPORTED; +} + + +/** + Sets the system wakeup alarm clock time. + + @param Enabled Enable or disable the wakeup alarm. + @param Time If Enable is TRUE, the time to set the wakeup alarm for. + + @retval EFI_SUCCESS If Enable is TRUE, then the wakeup alarm was enabled. If + Enable is FALSE, then the wakeup alarm was disabled. + @retval EFI_INVALID_PARAMETER A time field is out of range. + @retval EFI_DEVICE_ERROR The wakeup time could not be set due to a hardware error. + @retval EFI_UNSUPPORTED A wakeup timer is not supported on this platform. + +**/ +EFI_STATUS +EFIAPI +LibSetWakeupTime ( + IN BOOLEAN Enabled, + OUT EFI_TIME *Time + ) +{ + // Not a required feature + return EFI_UNSUPPORTED; +} + + +/** + This is the declaration of an EFI image entry point. This can be the entry point to an application + written to this specification, an EFI boot service driver, or an EFI runtime driver. + + @param ImageHandle Handle that identifies the loaded image. + @param SystemTable System Table for this image. + + @retval EFI_SUCCESS The operation completed successfully. + +**/ +EFI_STATUS +EFIAPI +LibRtcInitialize ( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable + ) +{ + EFI_STATUS Status = EFI_SUCCESS; + EFI_TIME EfiTime; + + EfiInitializeLock (&mRtcLock, TPL_CALLBACK); + + // Setup the setters and getters + gRT->GetTime = LibGetTime; + gRT->SetTime = LibSetTime; + gRT->GetWakeupTime = LibGetWakeupTime; + gRT->SetWakeupTime = LibSetWakeupTime; + + Status = InitializeM41T83 (); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_ERROR, "[%a]:[%dL] Status : %r\nRTC M41T83 Init Failed !!!\n", + __FUNCTION__, __LINE__, Status)); + /* + * Returning ERROR on failure of RTC initilization will cause the system to hang up. + * So we add some debug message to indecate the RTC initilization failed, + * and continue without returning with error to avoid system hanging up. + * + *return Status; + */ + } + + LibGetTime (&EfiTime, NULL); + if (!IsTimeValid (&EfiTime)) { + EfiTime.Year = 2015; + EfiTime.Month = 1; + EfiTime.Day = 1; + EfiTime.Hour = 0; + EfiTime.Minute = 0; + EfiTime.Second = 0; + Status = LibSetTime (&EfiTime); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_ERROR, "[%a]:[%dL] RTC settime Status : %r\n", + __FUNCTION__, __LINE__, Status)); + } + } + + DEBUG (( + DEBUG_ERROR, "Now RTC Time is : %04d-%02d-%02d %02d:%02d:%02d\n", + EfiTime.Year, EfiTime.Month, EfiTime.Day, EfiTime.Hour, EfiTime.Minute, + EfiTime.Second + )); + /* + * Returning ERROR on failure of RTC initilization will cause the system to hang up. + * So we add some debug message to indecate the RTC initilization failed, + * and return success to avoid system hanging up. + */ + return EFI_SUCCESS; +}