diff options
Diffstat (limited to 'ArmPlatformPkg')
| -rw-r--r-- | ArmPlatformPkg/Library/PL031RealTimeClockLib/PL031RealTimeClockLib.c | 186 |
1 files changed, 15 insertions, 171 deletions
diff --git a/ArmPlatformPkg/Library/PL031RealTimeClockLib/PL031RealTimeClockLib.c b/ArmPlatformPkg/Library/PL031RealTimeClockLib/PL031RealTimeClockLib.c index 41ebcb95ab..f1eb0deb32 100644 --- a/ArmPlatformPkg/Library/PL031RealTimeClockLib/PL031RealTimeClockLib.c +++ b/ArmPlatformPkg/Library/PL031RealTimeClockLib/PL031RealTimeClockLib.c @@ -40,8 +40,6 @@ #include <ArmPlatform.h>
-STATIC CONST CHAR16 mTimeZoneVariableName[] = L"PL031RtcTimeZone";
-STATIC CONST CHAR16 mDaylightVariableName[] = L"PL031RtcDaylight";
STATIC BOOLEAN mPL031Initialized = FALSE;
STATIC EFI_EVENT mRtcVirtualAddrChangeEvent;
STATIC UINTN mPL031RtcBase;
@@ -134,15 +132,12 @@ LibGetTime ( {
EFI_STATUS Status = EFI_SUCCESS;
UINT32 EpochSeconds;
- INT16 TimeZone;
- UINT8 Daylight;
- UINTN Size;
// Initialize the hardware if not already done
if (!mPL031Initialized) {
Status = InitializePL031 ();
if (EFI_ERROR (Status)) {
- goto EXIT;
+ return Status;
}
}
@@ -156,7 +151,7 @@ LibGetTime ( Status = EFI_SUCCESS;
} else if (EFI_ERROR (Status)) {
// Battery backed up hardware RTC exists but could not be read due to error. Abort.
- goto EXIT;
+ return Status;
} else {
// Battery backed up hardware RTC exists and we read the time correctly from it.
// Now sync the PL031 to the new time.
@@ -165,107 +160,18 @@ LibGetTime ( // Ensure Time is a valid pointer
if (Time == NULL) {
- Status = EFI_INVALID_PARAMETER;
- goto EXIT;
+ return EFI_INVALID_PARAMETER;
}
- // Get the current time zone information from non-volatile storage
- Size = sizeof (TimeZone);
- Status = EfiGetVariable (
- (CHAR16 *)mTimeZoneVariableName,
- &gEfiCallerIdGuid,
- NULL,
- &Size,
- (VOID *)&TimeZone
- );
-
- if (EFI_ERROR (Status)) {
- ASSERT(Status != EFI_INVALID_PARAMETER);
- ASSERT(Status != EFI_BUFFER_TOO_SMALL);
-
- if (Status != EFI_NOT_FOUND)
- goto EXIT;
-
- // The time zone variable does not exist in non-volatile storage, so create it.
- Time->TimeZone = EFI_UNSPECIFIED_TIMEZONE;
- // Store it
- Status = EfiSetVariable (
- (CHAR16 *)mTimeZoneVariableName,
- &gEfiCallerIdGuid,
- EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
- Size,
- (VOID *)&(Time->TimeZone)
- );
- if (EFI_ERROR (Status)) {
- DEBUG ((
- EFI_D_ERROR,
- "LibGetTime: Failed to save %s variable to non-volatile storage, Status = %r\n",
- mTimeZoneVariableName,
- Status
- ));
- goto EXIT;
- }
- } else {
- // Got the time zone
- Time->TimeZone = TimeZone;
-
- // Check TimeZone bounds: -1440 to 1440 or 2047
- if (((Time->TimeZone < -1440) || (Time->TimeZone > 1440))
- && (Time->TimeZone != EFI_UNSPECIFIED_TIMEZONE)) {
- Time->TimeZone = EFI_UNSPECIFIED_TIMEZONE;
- }
-
- // Adjust for the correct time zone
- if (Time->TimeZone != EFI_UNSPECIFIED_TIMEZONE) {
- EpochSeconds += Time->TimeZone * SEC_PER_MIN;
- }
+ // Adjust for the correct time zone
+ if (Time->TimeZone != EFI_UNSPECIFIED_TIMEZONE) {
+ EpochSeconds += Time->TimeZone * SEC_PER_MIN;
}
- // 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)) {
- ASSERT(Status != EFI_INVALID_PARAMETER);
- ASSERT(Status != EFI_BUFFER_TOO_SMALL);
-
- if (Status != EFI_NOT_FOUND)
- goto EXIT;
-
- // The daylight variable does not exist in non-volatile storage, so create it.
- Time->Daylight = 0;
- // Store it
- Status = EfiSetVariable (
- (CHAR16 *)mDaylightVariableName,
- &gEfiCallerIdGuid,
- EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
- Size,
- (VOID *)&(Time->Daylight)
- );
- if (EFI_ERROR (Status)) {
- DEBUG ((
- EFI_D_ERROR,
- "LibGetTime: Failed to save %s variable to non-volatile storage, Status = %r\n",
- mDaylightVariableName,
- Status
- ));
- goto EXIT;
- }
- } else {
- // Got the daylight information
- Time->Daylight = Daylight;
-
- // 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;
- }
+ // 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
@@ -281,8 +187,7 @@ LibGetTime ( Capabilities->SetsToZero = FALSE;
}
- EXIT:
- return Status;
+ return EFI_SUCCESS;
}
@@ -305,37 +210,19 @@ LibSetTime ( EFI_STATUS Status;
UINTN EpochSeconds;
- // Check the input parameters are within the range specified by UEFI
- if ((Time->Year < 1900) ||
- (Time->Year > 9999) ||
- (Time->Month < 1 ) ||
- (Time->Month > 12 ) ||
- (!IsDayValid (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)))
- ) {
- Status = EFI_INVALID_PARAMETER;
- goto EXIT;
- }
-
// Because the PL031 is a 32-bit counter counting seconds,
// the maximum time span is just over 136 years.
// Time is stored in Unix Epoch format, so it starts in 1970,
// Therefore it can not exceed the year 2106.
if ((Time->Year < 1970) || (Time->Year >= 2106)) {
- Status = EFI_UNSUPPORTED;
- goto EXIT;
+ return EFI_UNSUPPORTED;
}
// Initialize the hardware if not already done
if (!mPL031Initialized) {
Status = InitializePL031 ();
if (EFI_ERROR (Status)) {
- goto EXIT;
+ return Status;
}
}
@@ -346,8 +233,6 @@ LibSetTime ( EpochSeconds -= Time->TimeZone * SEC_PER_MIN;
}
- // TODO: Automatic Daylight activation
-
// 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
@@ -364,54 +249,13 @@ LibSetTime ( Status = ArmPlatformSysConfigSet (SYS_CFG_RTC, EpochSeconds);
if ((EFI_ERROR (Status)) && (Status != EFI_UNSUPPORTED)){
// Any status message except SUCCESS and UNSUPPORTED indicates a hardware failure.
- goto EXIT;
+ return Status;
}
-
// Set the PL031
MmioWrite32 (mPL031RtcBase + PL031_RTC_LR_LOAD_REGISTER, EpochSeconds);
- // The accesses to Variable Services can be very slow, because we may be writing to Flash.
- // Do this after having set the RTC.
-
- // 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 ((
- EFI_D_ERROR,
- "LibSetTime: Failed to save %s variable to non-volatile storage, 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 ((
- EFI_D_ERROR,
- "LibSetTime: Failed to save %s variable to non-volatile storage, Status = %r\n",
- mDaylightVariableName,
- Status
- ));
- goto EXIT;
- }
-
- EXIT:
- return Status;
+ return EFI_SUCCESS;
}
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