diff options
Diffstat (limited to 'ArmPlatformPkg/Library/PL031RealTimeClockLib/PL031RealTimeClockLib.c')
| -rw-r--r-- | ArmPlatformPkg/Library/PL031RealTimeClockLib/PL031RealTimeClockLib.c | 147 |
1 files changed, 95 insertions, 52 deletions
diff --git a/ArmPlatformPkg/Library/PL031RealTimeClockLib/PL031RealTimeClockLib.c b/ArmPlatformPkg/Library/PL031RealTimeClockLib/PL031RealTimeClockLib.c index ec3091b9..b7dba087 100644 --- a/ArmPlatformPkg/Library/PL031RealTimeClockLib/PL031RealTimeClockLib.c +++ b/ArmPlatformPkg/Library/PL031RealTimeClockLib/PL031RealTimeClockLib.c @@ -4,6 +4,7 @@ Currently this driver does not support runtime virtual calling.
Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
+ Copyright (c) 2011-2013, ARM Ltd. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@@ -33,9 +34,9 @@ #include <ArmPlatform.h>
-CHAR16 mTimeZoneVariableName[] = L"PL031_TimeZone";
-CHAR16 mDaylightVariableName[] = L"PL031_Daylight";
-BOOLEAN mPL031Initialized = FALSE;
+STATIC CONST CHAR16 mTimeZoneVariableName[] = L"PL031RtcTimeZone";
+STATIC CONST CHAR16 mDaylightVariableName[] = L"PL031RtcDaylight";
+STATIC BOOLEAN mPL031Initialized = FALSE;
EFI_STATUS
IdentifyPL031 (
@@ -128,10 +129,6 @@ EpochToEfiTime ( UINTN ss;
UINTN J;
- if (Time->Daylight == TRUE) {
-
- }
-
J = (EpochSeconds / 86400) + 2440588;
j = J + 32044;
g = j / 146097;
@@ -233,13 +230,14 @@ DayValid ( 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.
+ @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_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
@@ -250,9 +248,10 @@ LibGetTime ( )
{
EFI_STATUS Status = EFI_SUCCESS;
- UINTN EpochSeconds;
- INT16 *TimeZone = 0;
- UINTN *Daylight = 0;
+ UINT32 EpochSeconds;
+ INT16 TimeZone;
+ UINT8 Daylight;
+ UINTN Size;
// Initialize the hardware if not already done
if (!mPL031Initialized) {
@@ -286,27 +285,44 @@ LibGetTime ( }
// Get the current time zone information from non-volatile storage
- TimeZone = (INT16 *)GetVariable(mTimeZoneVariableName, &gEfiGlobalVariableGuid);
+ Size = sizeof (TimeZone);
+ Status = gRT->GetVariable (
+ (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;
- if (TimeZone == NULL) {
// The time zone variable does not exist in non-volatile storage, so create it.
Time->TimeZone = EFI_UNSPECIFIED_TIMEZONE;
// Store it
Status = gRT->SetVariable (
- mTimeZoneVariableName,
- &gEfiGlobalVariableGuid,
- EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
- sizeof(Time->TimeZone),
- &(Time->TimeZone)
- );
+ (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: ERROR: TimeZone\n"));
+ 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;
- FreePool(TimeZone);
+ Time->TimeZone = TimeZone;
// Check TimeZone bounds: -1440 to 1440 or 2047
if (((Time->TimeZone < -1440) || (Time->TimeZone > 1440))
@@ -321,27 +337,44 @@ LibGetTime ( }
// Get the current daylight information from non-volatile storage
- Daylight = (UINTN *)GetVariable(mDaylightVariableName, &gEfiGlobalVariableGuid);
+ Size = sizeof (Daylight);
+ Status = gRT->GetVariable (
+ (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;
- if (Daylight == NULL) {
// The daylight variable does not exist in non-volatile storage, so create it.
Time->Daylight = 0;
// Store it
Status = gRT->SetVariable (
- mDaylightVariableName,
- &gEfiGlobalVariableGuid,
- EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
- sizeof(Time->Daylight),
- &(Time->Daylight)
- );
+ (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: ERROR: Daylight\n"));
+ 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;
- FreePool(Daylight);
+ Time->Daylight = Daylight;
// Adjust for the correct period
if ((Time->Daylight & EFI_TIME_IN_DAYLIGHT) == EFI_TIME_IN_DAYLIGHT) {
@@ -456,27 +489,37 @@ LibSetTime ( // Save the current time zone information into non-volatile storage
Status = gRT->SetVariable (
- mTimeZoneVariableName,
- &gEfiGlobalVariableGuid,
- EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
- sizeof(Time->TimeZone),
- &(Time->TimeZone)
- );
+ (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: ERROR: TimeZone\n"));
+ 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 = gRT->SetVariable (
- mDaylightVariableName,
- &gEfiGlobalVariableGuid,
- EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
- sizeof(Time->Daylight),
- &(Time->Daylight)
- );
+ (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: ERROR: Daylight\n"));
+ DEBUG ((
+ EFI_D_ERROR,
+ "LibSetTime: Failed to save %s variable to non-volatile storage, Status = %r\n",
+ mDaylightVariableName,
+ Status
+ ));
goto EXIT;
}
|