diff options
Diffstat (limited to 'EmulatorPkg/RealTimeClockRuntimeDxe/RealTimeClock.c')
| -rw-r--r-- | EmulatorPkg/RealTimeClockRuntimeDxe/RealTimeClock.c | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/EmulatorPkg/RealTimeClockRuntimeDxe/RealTimeClock.c b/EmulatorPkg/RealTimeClockRuntimeDxe/RealTimeClock.c new file mode 100644 index 0000000000..05c34bdbb5 --- /dev/null +++ b/EmulatorPkg/RealTimeClockRuntimeDxe/RealTimeClock.c @@ -0,0 +1,305 @@ +/*++
+ Emu RTC Architectural Protocol Driver as defined in PI
+
+Copyright (c) 2004 - 2008, Intel Corporation. All rights reserved.<BR>
+Portions copyright (c) 2010 - 2011, Apple Inc. 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 <PiDxe.h>
+
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/UefiLib.h>
+#include <Library/UefiDriverEntryPoint.h>
+#include <Library/EmuThunkLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+
+#include <Protocol/RealTimeClock.h>
+
+BOOLEAN
+DayValid (
+ IN EFI_TIME *Time
+ );
+
+BOOLEAN
+IsLeapYear (
+ IN EFI_TIME *Time
+ );
+
+EFI_STATUS
+RtcTimeFieldsValid (
+ IN EFI_TIME *Time
+ );
+
+EFI_STATUS
+EFIAPI
+InitializeRealTimeClock (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ );
+
+EFI_STATUS
+EFIAPI
+EmuGetTime (
+ OUT EFI_TIME * Time,
+ OUT EFI_TIME_CAPABILITIES * Capabilities OPTIONAL
+ )
+/*++
+
+Routine Description:
+ Service routine for RealTimeClockInstance->GetTime
+
+Arguments:
+
+ Time - A pointer to storage that will receive a snapshot of the current time.
+
+ Capabilities - A pointer to storage that will receive the capabilities of the real time clock
+ in the platform. This includes the real time clock's resolution and accuracy.
+ All reported device capabilities are rounded up. This is an OPTIONAL argument.
+
+Returns:
+
+ EFI_SUCEESS - The underlying GetSystemTime call occurred and returned
+ Note that in the NT32 emulation, the GetSystemTime call has no return value
+ thus you will always receive a EFI_SUCCESS on this.
+
+**/
+{
+
+ //
+ // Check parameter for null pointer
+ //
+ if (Time == NULL) {
+ return EFI_INVALID_PARAMETER;
+
+ }
+
+ gEmuThunk->GetTime (Time, Capabilities);
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+EFIAPI
+EmuSetTime (
+ IN EFI_TIME *Time
+ )
+/*++
+
+Routine Description:
+ Service routine for RealTimeClockInstance->SetTime
+
+Arguments:
+
+ Time - A pointer to storage containing the time and date information to
+ program into the real time clock.
+
+Returns:
+
+ EFI_SUCEESS - The operation completed successfully.
+
+ EFI_INVALID_PARAMETER - One of the fields in Time is out of range.
+
+ EFI_DEVICE_ERROR - The operation could not be complete due to a device error.
+
+**/
+{
+ EFI_STATUS Status;
+
+ if (Time == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+ //
+ // Make sure that the time fields are valid
+ //
+ Status = RtcTimeFieldsValid (Time);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ return EFI_UNSUPPORTED;
+}
+
+EFI_STATUS
+EFIAPI
+EmuGetWakeupTime (
+ OUT BOOLEAN *Enabled,
+ OUT BOOLEAN *Pending,
+ OUT EFI_TIME *Time
+ )
+/*++
+
+Routine Description:
+ Service routine for RealTimeClockInstance->GetWakeupTime
+
+Arguments:
+ This - Indicates the protocol instance structure.
+
+ Enabled - Indicates if the alarm is currently enabled or disabled.
+
+ Pending - Indicates if the alarm signal is pending and requires
+ acknowledgement.
+
+ Time - The current alarm setting.
+
+Returns:
+
+ EFI_SUCEESS - The operation completed successfully.
+
+ EFI_DEVICE_ERROR - The operation could not be complete due to a device error.
+
+ EFI_UNSUPPORTED - The operation is not supported on this platform.
+
+**/
+{
+ return EFI_UNSUPPORTED;
+}
+
+EFI_STATUS
+EFIAPI
+EmuSetWakeupTime (
+ IN BOOLEAN Enable,
+ OUT EFI_TIME *Time
+ )
+/*++
+
+Routine Description:
+ Service routine for RealTimeClockInstance->SetWakeupTime
+
+Arguments:
+
+ Enabled - Enable or disable the wakeup alarm.
+
+ Time - If enable is TRUE, the time to set the wakup alarm for.
+ If enable is FALSE, then this parameter is optional, and
+ may be NULL.
+
+Returns:
+
+ EFI_SUCEESS - The operation completed successfully.
+
+ EFI_DEVICE_ERROR - The operation could not be complete due to a device error.
+
+ EFI_INVALID_PARAMETER - A field in Time is out of range.
+
+ EFI_UNSUPPORTED - The operation is not supported on this platform.
+
+**/
+{
+ return EFI_UNSUPPORTED;
+}
+
+EFI_STATUS
+EFIAPI
+InitializeRealTimeClock (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+/*++
+
+Routine Description:
+ Install Real Time Clock Protocol
+
+Arguments:
+ ImageHandle - Image Handle
+ SystemTable - Pointer to system table
+
+Returns:
+
+ EFI_SUCEESS - Real Time Clock Services are installed into the Runtime Services Table
+
+**/
+{
+ EFI_STATUS Status;
+ EFI_HANDLE Handle;
+
+ SystemTable->RuntimeServices->GetTime = EmuGetTime;
+ SystemTable->RuntimeServices->SetTime = EmuSetTime;
+ SystemTable->RuntimeServices->GetWakeupTime = EmuGetWakeupTime;
+ SystemTable->RuntimeServices->SetWakeupTime = EmuSetWakeupTime;
+
+ Handle = NULL;
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &Handle,
+ &gEfiRealTimeClockArchProtocolGuid,
+ NULL,
+ NULL
+ );
+ return Status;
+}
+
+EFI_STATUS
+RtcTimeFieldsValid (
+ IN EFI_TIME *Time
+ )
+/*++
+
+Routine Description:
+
+ Arguments:
+
+ Returns:
+**/
+{
+ 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
+ )
+{
+
+ STATIC const INTN DayOfMonth[12] = { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
+
+ if (Time->Day < 1 ||
+ Time->Day > DayOfMonth[Time->Month - 1] ||
+ (Time->Month == 2 && (!IsLeapYear (Time) && Time->Day > 28))
+ ) {
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+BOOLEAN
+IsLeapYear (
+ IN EFI_TIME *Time
+ )
+{
+ 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;
+ }
+}
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