--- /dev/null
+/** @file
+*
+* Copyright (c) 2011, ARM Limited. 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 <Uefi.h>
+
+#include <Library/BaseMemoryLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiRuntimeServicesTableLib.h>
+#include <Library/DebugLib.h>
+#include <Library/IoLib.h>
+
+#include <Protocol/RealTimeClock.h>
+#include <Protocol/EmbeddedExternalDevice.h>
+
+#include <Omap3530/Omap3530.h>
+#include <TPS65950.h>
+
+
+EMBEDDED_EXTERNAL_DEVICE *gTPS65950;
+INT16 TimeZone = EFI_UNSPECIFIED_TIMEZONE;
+
+/**
+ 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.
+
+**/
+EFI_STATUS
+EFIAPI
+LibGetTime (
+ OUT EFI_TIME *Time,
+ OUT EFI_TIME_CAPABILITIES *Capabilities
+ )
+{
+ EFI_STATUS Status;
+ UINT8 Data;
+ EFI_TPL OldTpl;
+
+ if (Time == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ OldTpl = gBS->RaiseTPL(TPL_NOTIFY);
+
+ /* Get time and date */
+ ZeroMem(Time, sizeof(EFI_TIME));
+
+ // Latch values
+ Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, RTC_CTRL_REG), 1, &Data);
+ if (Status != EFI_SUCCESS) goto EXIT;
+ Data |= BIT6;
+ Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, RTC_CTRL_REG), 1, &Data);
+ if (Status != EFI_SUCCESS) goto EXIT;
+
+ // Read registers
+ Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, YEARS_REG), 1, &Data);
+ if (Status != EFI_SUCCESS) goto EXIT;
+ Time->Year = 2000 + ((Data >> 4) & 0xF) * 10 + (Data & 0xF);
+
+ Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, MONTHS_REG), 1, &Data);
+ if (Status != EFI_SUCCESS) goto EXIT;
+ Time->Month = ((Data >> 4) & 0x1) * 10 + (Data & 0xF);
+
+ Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, DAYS_REG), 1, &Data);
+ if (Status != EFI_SUCCESS) goto EXIT;
+ Time->Day = ((Data >> 4) & 0x3) * 10 + (Data & 0xF);
+
+ Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, HOURS_REG), 1, &Data);
+ if (Status != EFI_SUCCESS) goto EXIT;
+ Time->Hour = ((Data >> 4) & 0x3) * 10 + (Data & 0xF);
+
+ Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, MINUTES_REG), 1, &Data);
+ if (Status != EFI_SUCCESS) goto EXIT;
+ Time->Minute = ((Data >> 4) & 0x7) * 10 + (Data & 0xF);
+
+ Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, SECONDS_REG), 1, &Data);
+ if (Status != EFI_SUCCESS) goto EXIT;
+ Time->Second = ((Data >> 4) & 0x7) * 10 + (Data & 0xF);
+
+ Time->TimeZone = TimeZone;
+ // TODO: check what to use here
+ Time->Daylight = EFI_TIME_ADJUST_DAYLIGHT;
+
+ // Set capabilities
+
+ // TODO: Set real capabilities
+ if (Capabilities != NULL) {
+ Capabilities->Resolution = 1;
+ Capabilities->Accuracy = 50000000;
+ Capabilities->SetsToZero = FALSE;
+ }
+
+EXIT:
+ gBS->RestoreTPL(OldTpl);
+
+ return (Status == EFI_SUCCESS) ? Status : EFI_DEVICE_ERROR;
+}
+
+/**
+ 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;
+ UINT8 Data;
+ UINT8 MonthDayCount[12] = { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
+ EFI_TPL OldTpl;
+
+ // Input validation according both to UEFI spec and hardware constraints
+ // UEFI spec says valid year range is 1900-9999 but TPS only supports 2000-2099
+ if ( (Time == NULL)
+ || (Time->Year < 2000 || Time->Year > 2099)
+ || (Time->Month < 1 || Time->Month > 12)
+ || (Time->Day < 1 || Time->Day > MonthDayCount[Time->Month])
+ || (Time->Hour > 23)
+ || (Time->Minute > 59)
+ || (Time->Second > 59)
+ || (Time->Nanosecond > 999999999)
+ || ((Time->TimeZone < -1440 || Time->TimeZone > 1440) && Time->TimeZone != 2047)
+ ) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ OldTpl = gBS->RaiseTPL(TPL_NOTIFY);
+
+ Data = Time->Year - 2000;
+ Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, YEARS_REG), 1, &Data);
+ if (Status != EFI_SUCCESS) goto EXIT;
+
+ Data = ((Time->Month / 10) << 4) | (Time->Month % 10);
+ Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, MONTHS_REG), 1, &Data);
+ if (Status != EFI_SUCCESS) goto EXIT;
+
+ Data = ((Time->Day / 10) << 4) | (Time->Day % 10);
+ Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, DAYS_REG), 1, &Data);
+ if (Status != EFI_SUCCESS) goto EXIT;
+
+ Data = ((Time->Hour / 10) << 4) | (Time->Hour % 10);
+ Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, HOURS_REG), 1, &Data);
+ if (Status != EFI_SUCCESS) goto EXIT;
+
+ Data = ((Time->Minute / 10) << 4) | (Time->Minute % 10);
+ Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, MINUTES_REG), 1, &Data);
+ if (Status != EFI_SUCCESS) goto EXIT;
+
+ Data = ((Time->Second / 10) << 4) | (Time->Second % 10);
+ Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, SECONDS_REG), 1, &Data);
+ if (Status != EFI_SUCCESS) goto EXIT;
+
+ TimeZone = Time->TimeZone;
+
+EXIT:
+ gBS->RestoreTPL(OldTpl);
+
+ return (Status == EFI_SUCCESS) ? Status : EFI_DEVICE_ERROR;
+}
+
+/**
+ 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
+ )
+{
+ 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
+ )
+{
+ 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_HANDLE Handle;
+ UINT8 Data;
+ EFI_TPL OldTpl;
+
+ Status = gBS->LocateProtocol (&gEmbeddedExternalDeviceProtocolGuid, NULL, (VOID **)&gTPS65950);
+ ASSERT_EFI_ERROR(Status);
+
+ OldTpl = gBS->RaiseTPL(TPL_NOTIFY);
+ Data = 1;
+ Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, RTC_CTRL_REG), 1, &Data);
+ ASSERT_EFI_ERROR(Status);
+ gBS->RestoreTPL(OldTpl);
+
+ // Setup the setters and getters
+ gRT->GetTime = LibGetTime;
+ gRT->SetTime = LibSetTime;
+ gRT->GetWakeupTime = LibGetWakeupTime;
+ gRT->SetWakeupTime = LibSetWakeupTime;
+
+ // Install the protocol
+ Handle = NULL;
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &Handle,
+ &gEfiRealTimeClockArchProtocolGuid, NULL,
+ NULL
+ );
+
+ return Status;
+}
+
+/**
+ Fixup internal data so that EFI can be call in virtual mode.
+ Call the passed in Child Notify event and convert any pointers in
+ lib to virtual mode.
+
+ @param[in] Event The Event that is being processed
+ @param[in] Context Event Context
+**/
+VOID
+EFIAPI
+LibRtcVirtualNotifyEvent (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ return;
+}
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