在 2020/5/19 2:13, Leif Lindholm 写道:
> On Mon, May 18, 2020 at 21:37:24 +0800, Ming Huang wrote:
>> There are some boards base on D06, but use RX8900 RTC,
>> so upstream the RX8900RealTimeClockLib.
>>
>> Contributed-under: TianoCore Contribution Agreement 1.1
>> Signed-off-by: Ming Huang <huangmin...@huawei.com>
>> ---
>> Silicon/Hisilicon/Library/RX8900RealTimeClockLib/RX8900RealTimeClock.h
>> | 41 ++
>> Silicon/Hisilicon/Library/RX8900RealTimeClockLib/RX8900RealTimeClockLib.c
>> | 468 ++++++++++++++++++++
>> Silicon/Hisilicon/Library/RX8900RealTimeClockLib/RX8900RealTimeClockLib.inf
>> | 33 ++
>> 3 files changed, 542 insertions(+)
>>
>> diff --git
>> a/Silicon/Hisilicon/Library/RX8900RealTimeClockLib/RX8900RealTimeClock.h
>> b/Silicon/Hisilicon/Library/RX8900RealTimeClockLib/RX8900RealTimeClock.h
>> new file mode 100644
>> index 0000000..6bcef10
>> --- /dev/null
>> +++ b/Silicon/Hisilicon/Library/RX8900RealTimeClockLib/RX8900RealTimeClock.h
>> @@ -0,0 +1,41 @@
>> +/** @file
>> +
>> + Copyright (c) 2020, Hisilicon Limited. All rights reserved.<BR>
>> +
>> + SPDX-License-Identifier: BSD-2-Clause-Patent
>> +
>> +**/
>> +
>> +#ifndef __RX8900_REAL_TIME_CLOCK_H__
>> +#define __RX8900_REAL_TIME_CLOCK_H__
>
> Please drop leading __.
Ok.
>
>> +
>> +#define RX8900_REGADDR_SECONDS 0x00
>> +#define RX8900_REGADDR_MIUTES 0x01
>> +#define RX8900_REGADDR_HOURS 0x02
>> +#define RX8900_REGADDR_DAY 0x03
>> +#define RX8900_REGADDR_DATE 0x04
>> +#define RX8900_REGADDR_MONTH 0x05
>> +#define RX8900_REGADDR_YEAR 0x06
>> +#define RX8900_REGADDR_RAM 0x07
>> +#define RX8900_REGADDR_ALARMMIN 0x08
>> +#define RX8900_REGADDR_ALARMHOUR 0x09
>> +#define RX8900_REGADDR_ALARMDAY 0x0A
>> +#define RX8900_REGADDR_ALARMWEEK 0x0A
>> +#define RX8900_REGADDR_TIMECOUNTER_0 0x0B
>> +#define RX8900_REGADDR_TIMECOUNTER_1 0x0C
>> +#define RX8900_REGADDR_EXTENSIONREG 0x0D
>> +#define RX8900_REGADDR_FLAGREG 0x0E
>> +#define RX8900_REGADDR_CONTRLREG 0xF
>> +#define RX8900_REGADDR_BACKUP_FUN 0x18
>> +
>> +#define RX8900_VDETOFF_SWOFF 0x0C
>> +#define TEMPERATURE_COMPENSATION_2S 0x40
>> +#define OUTPUT_FREQUENCY_32768 0x0C
>> +#define FLAG_REG_DEFAULT 0x00
>> +#define RX8900_RAM_REG_DEFAULT 0x5A
>> +
>> +
>> +#define RTC_DELAY_1000_MACROSECOND 1000
>
> Please keep this definition in RtcHelperLib.h.
Ok, Modify in v2.
Thanks,
Ming
>
> /
> Leif
>
>> +#define EFI_TIMEOFFSET_TIMEZONE 0x5A0
>> +
>> +#endif
>> diff --git
>> a/Silicon/Hisilicon/Library/RX8900RealTimeClockLib/RX8900RealTimeClockLib.c
>> b/Silicon/Hisilicon/Library/RX8900RealTimeClockLib/RX8900RealTimeClockLib.c
>> new file mode 100644
>> index 0000000..bb124fd
>> --- /dev/null
>> +++
>> b/Silicon/Hisilicon/Library/RX8900RealTimeClockLib/RX8900RealTimeClockLib.c
>> @@ -0,0 +1,468 @@
>> +/** @file
>> +
>> + Copyright (c) 2020, Hisilicon Limited. All rights reserved.<BR>
>> +
>> + SPDX-License-Identifier: BSD-2-Clause-Patent
>> +
>> +**/
>> +
>> +#include <Uefi.h>
>> +#include <PiDxe.h>
>> +#include <Library/BaseLib.h>
>> +#include <Library/BaseMemoryLib.h>
>> +#include <Library/DebugLib.h>
>> +#include <Library/I2CLib.h>
>> +#include <Library/RtcHelperLib.h>
>> +#include <Library/TimeBaseLib.h>
>> +#include <Library/TimerLib.h>
>> +#include <Library/UefiBootServicesTableLib.h>
>> +#include <Library/UefiLib.h>
>> +#include <Library/UefiRuntimeLib.h>
>> +#include <Library/UefiRuntimeServicesTableLib.h>
>> +#include <Protocol/RealTimeClock.h>
>> +#include "RX8900RealTimeClock.h"
>> +
>> +extern I2C_DEVICE gRtcDevice;
>> +
>> +STATIC BOOLEAN mRX8900Initialized = FALSE;
>> +STATIC CONST CHAR16 mTimeZoneVariableName[] = L"RX8900RtcTimeZone";
>> +STATIC CONST CHAR16 mDaylightVariableName[] = L"RX8900RtcDaylight";
>> +
>> +EFI_STATUS
>> +InitializeRX8900 (
>> + VOID
>> + )
>> +{
>> + EFI_STATUS Status;
>> + unsigned char writeTemp;
>> +
>> + Status = SwitchRtcI2cChannelAndLock ();
>> + if (EFI_ERROR (Status)) {
>> + goto EXIT;
>> + }
>> +
>> + Status = I2CInit (gRtcDevice.Socket, gRtcDevice.Port, Normal);
>> + if (EFI_ERROR (Status)) {
>> + goto EXIT;
>> + }
>> +
>> + writeTemp = RX8900_VDETOFF_SWOFF;
>> + Status = I2CWrite (&gRtcDevice, RX8900_REGADDR_BACKUP_FUN, 1, &writeTemp);
>> + if (EFI_ERROR (Status)) {
>> + goto EXIT;
>> + }
>> + writeTemp = TEMPERATURE_COMPENSATION_2S;
>> + Status = I2CWrite (&gRtcDevice, RX8900_REGADDR_CONTRLREG, 1, &writeTemp);
>> + if (EFI_ERROR (Status)) {
>> + goto EXIT;
>> + }
>> + writeTemp = OUTPUT_FREQUENCY_32768;
>> + Status = I2CWrite (&gRtcDevice, RX8900_REGADDR_EXTENSIONREG, 1,
>> &writeTemp);
>> + if (EFI_ERROR (Status)) {
>> + goto EXIT;
>> + }
>> +
>> + writeTemp = FLAG_REG_DEFAULT;
>> + Status = I2CWrite (&gRtcDevice, RX8900_REGADDR_FLAGREG, 1, &writeTemp);
>> + if (EFI_ERROR (Status)) {
>> + goto EXIT;
>> + }
>> + writeTemp = RX8900_RAM_REG_DEFAULT;
>> + Status = I2CWrite (&gRtcDevice, RX8900_REGADDR_RAM, 1, &writeTemp);
>> + if (EFI_ERROR (Status)) {
>> + goto EXIT;
>> + }
>> +
>> + mRX8900Initialized = TRUE;
>> +
>> + EXIT:
>> +
>> + ReleaseOwnershipOfRtc ();
>> + return Status;
>> +}
>> +
>> +STATIC
>> +INT16
>> +GetTimeZone (
>> + VOID
>> + )
>> +{
>> + EFI_STATUS Status;
>> + INT16 TimeZone;
>> + UINTN Size;
>> +
>> + TimeZone = EFI_UNSPECIFIED_TIMEZONE;
>> + Size = sizeof (TimeZone);
>> + Status = EfiGetVariable (
>> + (CHAR16 *)mTimeZoneVariableName,
>> + &gEfiCallerIdGuid,
>> + NULL,
>> + &Size,
>> + (VOID *)&TimeZone
>> + );
>> +
>> + if (EFI_ERROR (Status)) {
>> + TimeZone = EFI_UNSPECIFIED_TIMEZONE;
>> + // The time zone variable does not exist in non-volatile storage, so
>> create it.
>> + Status = EfiSetVariable (
>> + (CHAR16 *)mTimeZoneVariableName,
>> + &gEfiCallerIdGuid,
>> + EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS
>> | EFI_VARIABLE_RUNTIME_ACCESS,
>> + Size,
>> + (VOID *)&TimeZone
>> + );
>> +
>> + if (EFI_ERROR (Status)) {
>> + DEBUG ((DEBUG_INFO, "Failed to save %s variable, Status = %r\n",
>> + mTimeZoneVariableName, Status));
>> + }
>> + } else {
>> + // Check TimeZone bounds: -1440 to 1440 or 2047
>> + if ((TimeZone < -EFI_TIMEOFFSET_TIMEZONE) || (TimeZone >
>> EFI_TIMEOFFSET_TIMEZONE)) {
>> + TimeZone = EFI_UNSPECIFIED_TIMEZONE;
>> + }
>> + }
>> +
>> + return TimeZone;
>> +}
>> +
>> +STATIC
>> +UINT8
>> +GetDayLight (
>> + VOID
>> + )
>> +{
>> + EFI_STATUS Status;
>> + UINT8 DayLight;
>> + UINTN Size;
>> +
>> + DayLight = 0;
>> + // Get the current daylight information from non-volatile storage
>> + Size = sizeof (DayLight);
>> + Status = EfiGetVariable (
>> + (CHAR16 *)mDaylightVariableName,
>> + &gEfiCallerIdGuid,
>> + NULL,
>> + &Size,
>> + (VOID *)&DayLight
>> + );
>> +
>> + if (EFI_ERROR (Status)) {
>> + DayLight = 0;
>> + // The daylight variable does not exist in non-volatile storage, so
>> create it.
>> + Status = EfiSetVariable (
>> + (CHAR16 *)mDaylightVariableName,
>> + &gEfiCallerIdGuid,
>> + EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS
>> | EFI_VARIABLE_RUNTIME_ACCESS,
>> + Size,
>> + (VOID *)&DayLight
>> + );
>> + if (EFI_ERROR (Status)) {
>> + DEBUG ((DEBUG_INFO, "Failed to save %s variable, Status = %r\n",
>> + mDaylightVariableName, Status));
>> + }
>> + }
>> +
>> + return DayLight;
>> +}
>> +
>> +EFI_STATUS
>> +EFIAPI
>> +LibGetTime (
>> + OUT EFI_TIME *Time,
>> + OUT EFI_TIME_CAPABILITIES *Capabilities
>> + )
>> +{
>> + EFI_STATUS Status;
>> + UINT8 Temp[7] = {0};
>> + UINT16 BaseYear = 2000;
>> + UINTN EpochSeconds;
>> + UINT8 TryCount = 0;
>> +
>> + // Ensure Time is a valid pointer
>> + if (Time == NULL) {
>> + return EFI_INVALID_PARAMETER;
>> + }
>> +
>> + // Initialize the hardware if not already done
>> + if (!mRX8900Initialized) {
>> + Status = InitializeRX8900 ();
>> + if (EFI_ERROR (Status)) {
>> + return EFI_NOT_READY;
>> + }
>> + }
>> +
>> + Status = SwitchRtcI2cChannelAndLock ();
>> + if (EFI_ERROR (Status)) {
>> + ReleaseOwnershipOfRtc ();
>> + return Status;
>> + }
>> +
>> + do {
>> + Status = I2CRead (&gRtcDevice, RX8900_REGADDR_SECONDS, 7, Temp);
>> + if (EFI_ERROR (Status)) {
>> + Status = EFI_DEVICE_ERROR;
>> + goto Err;
>> + }
>> +
>> + Time->Second = BcdToDecimal8 (Temp[0]);
>> + Time->Minute = BcdToDecimal8 (Temp[1]);
>> + Time->Hour = BcdToDecimal8 (Temp[2]);
>> + Time->Day = BcdToDecimal8 (Temp[4]);
>> + Time->Month = BcdToDecimal8 (Temp[5]);
>> + Time->Year = BaseYear + BcdToDecimal8 (Temp[6]);
>> + Time->Nanosecond = 0;
>> +
>> + EpochSeconds = EfiTimeToEpoch (Time);
>> +
>> + Time->TimeZone = GetTimeZone ();
>> + // Adjust for the correct time zone
>> + if (Time->TimeZone != EFI_UNSPECIFIED_TIMEZONE) {
>> + EpochSeconds += Time->TimeZone * SEC_PER_MIN;
>> + }
>> +
>> + Time->Daylight = GetDayLight ();
>> + // Adjust for the correct period
>> + if ((Time->Daylight & EFI_TIME_IN_DAYLIGHT) == EFI_TIME_IN_DAYLIGHT) {
>> + // Convert to adjusted time, i.e. spring forwards one hour
>> + EpochSeconds += SEC_PER_HOUR;
>> + }
>> +
>> + // Convert from internal 32-bit time to UEFI time
>> + EpochToEfiTime (EpochSeconds, Time);
>> + if ((!IsTimeValid (Time)) || ((Time->Year - BaseYear) > 99) ||
>> (Time->Year < 2000)) {
>> + DEBUG ((DEBUG_INFO, "LibGetTime: %d-%d-%d %d-%d-%d EpochSeconds:%llx
>> is invalid time!\n",
>> + Time->Second, Time->Minute, Time->Hour, Time->Day, Time->Month,
>> + Time->Year, EpochSeconds));
>> + Status = EFI_DEVICE_ERROR;
>> + }
>> +
>> +Err:
>> + TryCount++;
>> + } while ((TryCount < 3) && (EFI_ERROR (Status)));
>> +
>> + ReleaseOwnershipOfRtc ();
>> + return Status;
>> +}
>> +
>> +STATIC
>> +EFI_STATUS
>> +SetTimeToRX8900 (
>> + IN EFI_TIME *Time
>> + )
>> +{
>> + EFI_STATUS Status;
>> + UINT8 Temp;
>> +
>> + (VOID)MicroSecondDelay (RTC_DELAY_1000_MACROSECOND);
>> + Temp = DecimalToBcd8 (Time->Second);
>> + Status = I2CWrite (&gRtcDevice, RX8900_REGADDR_SECONDS, 1, &Temp);
>> + if(EFI_ERROR (Status)) {
>> + Status = EFI_DEVICE_ERROR;
>> + return Status;
>> + }
>> +
>> + Temp = DecimalToBcd8 (Time->Minute);
>> + (VOID)MicroSecondDelay (RTC_DELAY_1000_MACROSECOND);
>> + Status = I2CWrite (&gRtcDevice, RX8900_REGADDR_MIUTES, 1, &Temp);
>> + if(EFI_ERROR (Status)) {
>> + Status = EFI_DEVICE_ERROR;
>> + return Status;
>> + }
>> +
>> + Temp = DecimalToBcd8 (Time->Hour);
>> + (VOID)MicroSecondDelay (RTC_DELAY_1000_MACROSECOND);
>> + Status = I2CWrite (&gRtcDevice, RX8900_REGADDR_HOURS, 1, &Temp);
>> + if(EFI_ERROR (Status)) {
>> + Status = EFI_DEVICE_ERROR;
>> + return Status;
>> + }
>> +
>> + Temp = DecimalToBcd8 (Time->Day);
>> + (VOID)MicroSecondDelay (RTC_DELAY_1000_MACROSECOND);
>> + Status = I2CWrite (&gRtcDevice, RX8900_REGADDR_DATE, 1, &Temp);
>> + if(EFI_ERROR (Status)) {
>> + Status = EFI_DEVICE_ERROR;
>> + return Status;
>> + }
>> +
>> + Temp = DecimalToBcd8 (Time->Month);
>> + (VOID)MicroSecondDelay (RTC_DELAY_1000_MACROSECOND);
>> + Status = I2CWrite (&gRtcDevice, RX8900_REGADDR_MONTH, 1, &Temp);
>> + if(EFI_ERROR (Status)) {
>> + Status = EFI_DEVICE_ERROR;
>> + return Status;
>> + }
>> +
>> + Time->Year= Time->Year % 100;
>> + Temp = Time->Year;
>> + Temp = DecimalToBcd8 (Temp);
>> + (VOID)MicroSecondDelay (RTC_DELAY_1000_MACROSECOND);
>> + Status = I2CWrite (&gRtcDevice, RX8900_REGADDR_YEAR, 1, &Temp);
>> + if(EFI_ERROR (Status)) {
>> + Status = EFI_DEVICE_ERROR;
>> + return Status;
>> + }
>> +
>> + return Status;
>> +}
>> +
>> +EFI_STATUS
>> +EFIAPI
>> +LibSetTime (
>> + IN EFI_TIME *Time
>> + )
>> +{
>> + EFI_STATUS Status;
>> + UINTN EpochSeconds;
>> +
>> + // Initialize the hardware if not already done
>> + if (!mRX8900Initialized) {
>> + Status = InitializeRX8900 ();
>> + if (EFI_ERROR (Status)) {
>> + goto EXIT;
>> + }
>> + }
>> +
>> + Status = SwitchRtcI2cChannelAndLock ();
>> + if (EFI_ERROR (Status)) {
>> + goto EXIT;
>> + }
>> +
>> + if(!IsTimeValid(Time)){
>> + return EFI_INVALID_PARAMETER;
>> + }
>> +
>> + EpochSeconds = EfiTimeToEpoch (Time);
>> +
>> + // Adjust for the correct time zone, i.e. convert to UTC time zone
>> + if (Time->TimeZone != EFI_UNSPECIFIED_TIMEZONE) {
>> + EpochSeconds -= Time->TimeZone * SEC_PER_MIN;
>> + }
>> +
>> + // Adjust for the correct period
>> + if ((Time->Daylight & EFI_TIME_IN_DAYLIGHT) == EFI_TIME_IN_DAYLIGHT) {
>> + // Convert to un-adjusted time, i.e. fall back one hour
>> + EpochSeconds -= SEC_PER_HOUR;
>> + }
>> +
>> + EpochToEfiTime (EpochSeconds, Time);
>> + Status = SetTimeToRX8900 (Time);
>> + if (EFI_ERROR (Status)) {
>> + goto EXIT;
>> + }
>> +
>> + // Save the current time zone information into non-volatile storage
>> + Status = EfiSetVariable (
>> + (CHAR16 *)mTimeZoneVariableName,
>> + &gEfiCallerIdGuid,
>> + EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS |
>> EFI_VARIABLE_RUNTIME_ACCESS,
>> + sizeof (Time->TimeZone),
>> + (VOID *)&(Time->TimeZone)
>> + );
>> + if (EFI_ERROR (Status)) {
>> + DEBUG ((DEBUG_INFO, "LibSetTime: Failed to save %s variable, Status =
>> %r\n",
>> + mTimeZoneVariableName, Status));
>> + goto EXIT;
>> + }
>> +
>> + // Save the current daylight information into non-volatile storage
>> + Status = EfiSetVariable (
>> + (CHAR16 *)mDaylightVariableName,
>> + &gEfiCallerIdGuid,
>> + EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS |
>> EFI_VARIABLE_RUNTIME_ACCESS,
>> + sizeof(Time->Daylight),
>> + (VOID *)&(Time->Daylight)
>> + );
>> + if (EFI_ERROR (Status)) {
>> + DEBUG ((DEBUG_INFO, "LibSetTime: Failed to save %s variable, Status =
>> %r\n",
>> + mDaylightVariableName, Status));
>> + goto EXIT;
>> + }
>> +
>> + EXIT:
>> + ReleaseOwnershipOfRtc ();
>> + return Status;
>> +}
>> +
>> +EFI_STATUS
>> +EFIAPI
>> +LibGetWakeupTime (
>> + OUT BOOLEAN *Enabled,
>> + OUT BOOLEAN *Pending,
>> + OUT EFI_TIME *Time
>> + )
>> +{
>> + // Not a required feature
>> + return EFI_UNSUPPORTED;
>> +}
>> +
>> +EFI_STATUS
>> +EFIAPI
>> +LibSetWakeupTime (
>> + IN BOOLEAN Enabled,
>> + OUT EFI_TIME *Time
>> + )
>> +{
>> + // Not a required feature
>> + return EFI_UNSUPPORTED;
>> +}
>> +
>> +
>> +EFI_STATUS
>> +EFIAPI
>> +LibRtcInitialize (
>> + IN EFI_HANDLE ImageHandle,
>> + IN EFI_SYSTEM_TABLE *SystemTable
>> + )
>> +{
>> + EFI_STATUS Status;
>> + EFI_HANDLE Handle;
>> + EFI_TIME EfiTime;
>> +
>> + // Setup the setters and getters
>> + gRT->GetTime = LibGetTime;
>> + gRT->SetTime = LibSetTime;
>> + gRT->GetWakeupTime = LibGetWakeupTime;
>> + gRT->SetWakeupTime = LibSetWakeupTime;
>> +
>> + Status = gRT->GetTime (&EfiTime, NULL);
>> + if (EFI_ERROR (Status) || (EfiTime.Year < 2000) || (EfiTime.Year > 2099)
>> ||
>> + (!IsTimeValid (&EfiTime))) {
>> + EfiTime.Year = 2000;
>> + EfiTime.Month = 1;
>> + EfiTime.Day = 1;
>> + EfiTime.Hour = 0;
>> + EfiTime.Minute = 0;
>> + EfiTime.Second = 0;
>> + EfiTime.Nanosecond = 0;
>> + EfiTime.Daylight = 0;
>> + EfiTime.TimeZone = EFI_UNSPECIFIED_TIMEZONE;
>> +
>> + Status = gRT->SetTime (&EfiTime);
>> + if (EFI_ERROR (Status)) {
>> + DEBUG ((DEBUG_ERROR, "SetTime Status : %r\n", Status));
>> + }
>> + }
>> +
>> + Handle = NULL;
>> + Status = gBS->InstallMultipleProtocolInterfaces (
>> + &Handle,
>> + &gEfiRealTimeClockArchProtocolGuid,
>> + NULL,
>> + NULL
>> + );
>> +
>> + return Status;
>> +}
>> +
>> +
>> +VOID
>> +EFIAPI
>> +LibRtcVirtualNotifyEvent (
>> + IN EFI_EVENT Event,
>> + IN VOID *Context
>> + )
>> +{
>> + return;
>> +}
>> diff --git
>> a/Silicon/Hisilicon/Library/RX8900RealTimeClockLib/RX8900RealTimeClockLib.inf
>>
>> b/Silicon/Hisilicon/Library/RX8900RealTimeClockLib/RX8900RealTimeClockLib.inf
>> new file mode 100644
>> index 0000000..aa07a06
>> --- /dev/null
>> +++
>> b/Silicon/Hisilicon/Library/RX8900RealTimeClockLib/RX8900RealTimeClockLib.inf
>> @@ -0,0 +1,33 @@
>> +/** @file
>> +
>> + Copyright (c) 2020, Hisilicon Limited. All rights reserved.<BR>
>> +
>> + SPDX-License-Identifier: BSD-2-Clause-Patent
>> +
>> +**/
>> +
>> +[Defines]
>> + INF_VERSION = 0x0001001A
>> + BASE_NAME = RX8900RealTimeClockLib
>> + FILE_GUID = 55BBD010-EA76-4836-8FEA-99CBAA6664F4
>> + MODULE_TYPE = BASE
>> + VERSION_STRING = 1.0
>> + LIBRARY_CLASS = RealTimeClockLib
>> +
>> +[Sources.common]
>> + RX8900RealTimeClockLib.c
>> +
>> +[Packages]
>> + EmbeddedPkg/EmbeddedPkg.dec
>> + MdePkg/MdePkg.dec
>> + Silicon/Hisilicon/HisiPkg.dec
>> +
>> +[LibraryClasses]
>> + DebugLib
>> + I2CLib
>> + IoLib
>> + RtcHelperLib
>> + TimeBaseLib
>> + TimerLib
>> + UefiLib
>> + UefiRuntimeLib
>> --
>> 2.8.1
>>
>
> .
>
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