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MdeModulePkg/Universal/PcatRealTimeClockRuntimeDxe

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6426 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
jji4 2008-11-07 07:44:21 +00:00
parent c5ed97f628
commit 8d85dc3126
4 changed files with 417 additions and 589 deletions
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156
MdeModulePkg/Universal/PcatRealTimeClockRuntimeDxe/Ia32/Ia32PcRtc.c
View File

@ -1,7 +1,7 @@
/** @file
Provides Set/Get time operations.
Copyright (c) 2006 - 2007, Intel Corporation
Copyright (c) 2006 - 2008, Intel Corporation
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
@ -16,56 +16,66 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
PC_RTC_MODULE_GLOBALS mModuleGlobal;
EFI_HANDLE mHandle = NULL;
/**
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
PcRtcEfiGetTime (
OUT EFI_TIME *Time,
OUT EFI_TIME_CAPABILITIES *Capabilities
OUT EFI_TIME_CAPABILITIES *Capabilities OPTIONAL
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Time - GC_TODO: add argument description
Capabilities - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
{
return PcRtcGetTime (Time, Capabilities, &mModuleGlobal);
}
/**
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
PcRtcEfiSetTime (
IN EFI_TIME *Time
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Time - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
{
return PcRtcSetTime (Time, &mModuleGlobal);
}
/**
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 Enabled is NULL.
@retval EFI_INVALID_PARAMETER Pending is NULL.
@retval EFI_INVALID_PARAMETER Time is NULL.
@retval EFI_DEVICE_ERROR The wakeup time could not be retrieved due to a hardware error.
@retval EFI_UNSUPPORTED A wakeup timer is not supported on this platform.
**/
EFI_STATUS
EFIAPI
PcRtcEfiGetWakeupTime (
@ -73,74 +83,56 @@ PcRtcEfiGetWakeupTime (
OUT BOOLEAN *Pending,
OUT EFI_TIME *Time
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Enabled - GC_TODO: add argument description
Pending - GC_TODO: add argument description
Time - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
{
return PcRtcGetWakeupTime (Enabled, Pending, Time, &mModuleGlobal);
}
/**
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.
If Enable is FALSE, then this parameter is optional, and may be NULL.
@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
PcRtcEfiSetWakeupTime (
IN BOOLEAN Enabled,
OUT EFI_TIME *Time
IN EFI_TIME *Time OPTIONAL
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Enabled - GC_TODO: add argument description
Time - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
{
return PcRtcSetWakeupTime (Enabled, Time, &mModuleGlobal);
}
/**
The user Entry Point for PcRTC module.
This is the entrhy point for PcRTC module. It installs the UEFI runtime service
including GetTime(),SetTime(),GetWakeupTime(),and SetWakeupTime().
@param ImageHandle The firmware allocated handle for the EFI image.
@param SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS The entry point is executed successfully.
@retval Others Some error occurs when executing this entry point.
**/
EFI_STATUS
EFIAPI
InitializePcRtc (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
/*++
Routine Description:
Arguments:
Returns:
--*/
// GC_TODO: ImageHandle - add argument and description to function comment
// GC_TODO: SystemTable - add argument and description to function comment
{
EFI_STATUS Status;
EFI_HANDLE NewHandle;
EfiInitializeLock (&mModuleGlobal.RtcLock, TPL_HIGH_LEVEL);
@ -154,13 +146,13 @@ Returns:
gRT->GetWakeupTime = PcRtcEfiGetWakeupTime;
gRT->SetWakeupTime = PcRtcEfiSetWakeupTime;
NewHandle = NULL;
Status = gBS->InstallMultipleProtocolInterfaces (
&NewHandle,
&mHandle,
&gEfiRealTimeClockArchProtocolGuid,
NULL,
NULL
);
ASSERT_EFI_ERROR (Status);
return Status;
}

470
MdeModulePkg/Universal/PcatRealTimeClockRuntimeDxe/PcRtc.c
View File

@ -14,88 +14,87 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#include "PcRtc.h"
/**
Compare the Hour, Minute and Second of the From time and the To time.
Only compare H/M/S in EFI_TIME and ignore other fields here.
@param From the first time
@param To the second time
@return >0 The H/M/S of the From time is later than those of To time
@return ==0 The H/M/S of the From time is same as those of To time
@return <0 The H/M/S of the From time is earlier than those of To time
**/
INTN
CompareHMS (
IN EFI_TIME *From,
IN EFI_TIME *To
);
/**
To check if second date is later than first date within 24 hours.
@param From the first date
@param To the second date
@retval TRUE From is previous to To within 24 hours.
@retval FALSE From is later, or it is previous to To more than 24 hours.
**/
BOOLEAN
IsWithinOneDay (
IN EFI_TIME *From,
IN EFI_TIME *To
);
/**
Read RTC content through its registers.
@param Address Address offset of RTC. It is recommended to use macros such as
RTC_ADDRESS_SECONDS.
@return The data of UINT8 type read from RTC.
**/
UINT8
RtcRead (
IN UINT8 Address
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Address - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
{
IoWrite8 (PCAT_RTC_ADDRESS_REGISTER, (UINT8) (Address | (UINT8) (IoRead8 (PCAT_RTC_ADDRESS_REGISTER) & 0x80)));
return IoRead8 (PCAT_RTC_DATA_REGISTER);
}
/**
Write RTC through its registers.
@param Address Address offset of RTC. It is recommended to use macros such as
RTC_ADDRESS_SECONDS.
@param Data The content you want to write into RTC.
**/
VOID
RtcWrite (
IN UINT8 Address,
IN UINT8 Data
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Address - GC_TODO: add argument description
Data - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
{
IoWrite8 (PCAT_RTC_ADDRESS_REGISTER, (UINT8) (Address | (UINT8) (IoRead8 (PCAT_RTC_ADDRESS_REGISTER) & 0x80)));
IoWrite8 (PCAT_RTC_DATA_REGISTER, Data);
}
/**
Initialize RTC.
@param Global For global use inside this module.
@retval EFI_DEVICE_ERROR Initialization failed due to device error.
@retval EFI_SUCCESS Initialization successful.
**/
EFI_STATUS
PcRtcInit (
IN PC_RTC_MODULE_GLOBALS *Global
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Global - GC_TODO: add argument description
Returns:
EFI_DEVICE_ERROR - GC_TODO: Add description for return value
EFI_SUCCESS - GC_TODO: Add description for return value
--*/
{
EFI_STATUS Status;
RTC_REGISTER_A RegisterA;
@ -112,7 +111,7 @@ Returns:
//BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or
// provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock
if (!EfiAtRuntime ()) {
EfiAcquireLock (&Global->RtcLock);
EfiAcquireLock (&Global->RtcLock);
}
//
// Initialize RTC Register
@ -147,7 +146,7 @@ Returns:
//BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or
// provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock
if (!EfiAtRuntime ()) {
EfiReleaseLock (&Global->RtcLock);
EfiReleaseLock (&Global->RtcLock);
}
return EFI_DEVICE_ERROR;
}
@ -180,7 +179,7 @@ Returns:
// provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock
//
if (!EfiAtRuntime ()) {
EfiReleaseLock (&Global->RtcLock);
EfiReleaseLock (&Global->RtcLock);
}
//
@ -225,26 +224,26 @@ Returns:
return EFI_SUCCESS;
}
/**
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 Global For global use inside this module.
@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
PcRtcGetTime (
OUT EFI_TIME *Time,
IN EFI_TIME_CAPABILITIES *Capabilities,
IN PC_RTC_MODULE_GLOBALS *Global
OUT EFI_TIME *Time,
OUT EFI_TIME_CAPABILITIES *Capabilities, OPTIONAL
IN PC_RTC_MODULE_GLOBALS *Global
)
/*++
Routine Description:
Arguments:
Returns:
--*/
// GC_TODO: Time - add argument and description to function comment
// GC_TODO: Capabilities - add argument and description to function comment
// GC_TODO: Global - add argument and description to function comment
// GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment
// GC_TODO: EFI_DEVICE_ERROR - add return value to function comment
// GC_TODO: EFI_SUCCESS - add return value to function comment
{
EFI_STATUS Status;
RTC_REGISTER_B RegisterB;
@ -263,7 +262,7 @@ Routine Description:
//BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or
// provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock
if (!EfiAtRuntime ()) {
EfiAcquireLock (&Global->RtcLock);
EfiAcquireLock (&Global->RtcLock);
}
//
// Wait for up to 0.1 seconds for the RTC to be updated
@ -273,7 +272,7 @@ Routine Description:
//BugBug: the EfiAtRuntime should be encapsulated in EfiReleaseLock or
// provide a new instance for EfiReleaseLock, say, RtEfiReleaseLock
if (!EfiAtRuntime ()) {
EfiReleaseLock (&Global->RtcLock);
EfiReleaseLock (&Global->RtcLock);
}
return Status;
}
@ -304,7 +303,7 @@ Routine Description:
//BugBug: the EfiAtRuntime should be encapsulated in EfiReleaseLock or
// provide a new instance for EfiReleaseLock, say, RtEfiReleaseLock
if (!EfiAtRuntime ()) {
EfiReleaseLock (&Global->RtcLock);
EfiReleaseLock (&Global->RtcLock);
}
//
// Get the variable that containts the TimeZone and Daylight fields
@ -325,7 +324,7 @@ Routine Description:
//
// Fill in Capabilities if it was passed in
//
if (Capabilities) {
if (Capabilities != NULL) {
Capabilities->Resolution = 1;
//
// 1 hertz
@ -340,22 +339,22 @@ Routine Description:
return EFI_SUCCESS;
}
/**
Sets the current local time and date information.
@param Time A pointer to the current time.
@param Global For global use inside this module.
@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
PcRtcSetTime (
IN EFI_TIME *Time,
IN PC_RTC_MODULE_GLOBALS *Global
)
/*++
Routine Description:
Arguments:
Returns:
--*/
// GC_TODO: Time - add argument and description to function comment
// GC_TODO: Global - add argument and description to function comment
// GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment
{
EFI_STATUS Status;
EFI_TIME RtcTime;
@ -382,7 +381,7 @@ Routine Description:
//BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or
// provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock
if (!EfiAtRuntime ()) {
EfiAcquireLock (&Global->RtcLock);
EfiAcquireLock (&Global->RtcLock);
}
//
// Wait for up to 0.1 seconds for the RTC to be updated
@ -429,7 +428,7 @@ Routine Description:
//BugBug: the EfiAtRuntime should be encapsulated in EfiReleaseLock or
// provide a new instance for EfiReleaseLock, say, RtEfiReleaseLock
if (!EfiAtRuntime ()) {
EfiReleaseLock (&Global->RtcLock);
EfiReleaseLock (&Global->RtcLock);
}
//
// Set the variable that containts the TimeZone and Daylight fields
@ -451,31 +450,29 @@ Routine Description:
return EFI_SUCCESS;
}
/**
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.
@param Global For global use inside this module.
@retval EFI_SUCCESS The alarm settings were returned.
@retval EFI_INVALID_PARAMETER Enabled is NULL.
@retval EFI_INVALID_PARAMETER Pending is NULL.
@retval EFI_INVALID_PARAMETER Time is NULL.
@retval EFI_DEVICE_ERROR The wakeup time could not be retrieved due to a hardware error.
@retval EFI_UNSUPPORTED A wakeup timer is not supported on this platform.
**/
EFI_STATUS
PcRtcGetWakeupTime (
OUT BOOLEAN *Enabled,
OUT BOOLEAN *Pending,
OUT EFI_TIME *Time,
IN PC_RTC_MODULE_GLOBALS *Global
IN PC_RTC_MODULE_GLOBALS *Global
)
/*++
Routine Description:
Arguments:
Returns:
--*/
// GC_TODO: Enabled - add argument and description to function comment
// GC_TODO: Pending - add argument and description to function comment
// GC_TODO: Time - add argument and description to function comment
// GC_TODO: Global - add argument and description to function comment
// GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment
// GC_TODO: EFI_DEVICE_ERROR - add return value to function comment
// GC_TODO: EFI_DEVICE_ERROR - add return value to function comment
// GC_TODO: EFI_SUCCESS - add return value to function comment
{
EFI_STATUS Status;
RTC_REGISTER_B RegisterB;
@ -495,7 +492,7 @@ Returns:
//BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or
// provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock
if (!EfiAtRuntime ()) {
EfiAcquireLock (&Global->RtcLock);
EfiAcquireLock (&Global->RtcLock);
}
//
// Wait for up to 0.1 seconds for the RTC to be updated
@ -547,7 +544,7 @@ Returns:
//BugBug: the EfiAtRuntime should be encapsulated in EfiReleaseLock or
// provide a new instance for EfiReleaseLock, say, RtEfiReleaseLock
if (!EfiAtRuntime ()) {
EfiReleaseLock (&Global->RtcLock);
EfiReleaseLock (&Global->RtcLock);
}
//
// Make sure all field values are in correct range
@ -565,30 +562,27 @@ Returns:
return EFI_SUCCESS;
}
/**
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.
If Enable is FALSE, then this parameter is optional, and may be NULL.
@param Global For global use inside this module.
@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
PcRtcSetWakeupTime (
IN BOOLEAN Enable,
OUT EFI_TIME *Time,
IN EFI_TIME *Time, OPTIONAL
IN PC_RTC_MODULE_GLOBALS *Global
)
/*++
Routine Description:
Arguments:
Returns:
--*/
// GC_TODO: Enable - add argument and description to function comment
// GC_TODO: Time - add argument and description to function comment
// GC_TODO: Global - add argument and description to function comment
// GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment
// GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment
// GC_TODO: EFI_UNSUPPORTED - add return value to function comment
// GC_TODO: EFI_DEVICE_ERROR - add return value to function comment
// GC_TODO: EFI_SUCCESS - add return value to function comment
{
EFI_STATUS Status;
EFI_TIME RtcTime;
@ -627,7 +621,7 @@ Returns:
//BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or
// provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock
if (!EfiAtRuntime ()) {
EfiAcquireLock (&Global->RtcLock);
EfiAcquireLock (&Global->RtcLock);
}
//
// Wait for up to 0.1 seconds for the RTC to be updated
@ -676,35 +670,26 @@ Returns:
//BugBug: the EfiAtRuntime should be encapsulated in EfiReleaseLock or
// provide a new instance for EfiReleaseLock, say, RtEfiReleaseLock
if (!EfiAtRuntime ()) {
EfiReleaseLock (&Global->RtcLock);
EfiReleaseLock (&Global->RtcLock);
}
return EFI_SUCCESS;
}
/**
See if centry register of RTC is valid.
@retval EFI_SUCCESS Century register is valid.
@retval EFI_DEVICE_ERROR Century register is NOT valid.
**/
EFI_STATUS
RtcTestCenturyRegister (
VOID
)
/*++
Routine Description:
Arguments:
Returns:
--*/
// GC_TODO: EFI_SUCCESS - add return value to function comment
// GC_TODO: EFI_DEVICE_ERROR - add return value to function comment
{
UINT8 Century;
UINT8 Temp;
Century = RtcRead (RTC_ADDRESS_CENTURY);
//
// RtcWrite (RTC_ADDRESS_CENTURY, 0x00);
//
Temp = (UINT8) (RtcRead (RTC_ADDRESS_CENTURY) & 0x7f);
RtcWrite (RTC_ADDRESS_CENTURY, Century);
if (Temp == 0x19 || Temp == 0x20) {
@ -721,10 +706,9 @@ Returns:
If valid, the function converts it to an 8-bit value and returns it.
Otherwise, return 0xff.
@param Value The 8-bit BCD value to check and convert
@param Value The 8-bit BCD value to check and convert
@return The 8-bit value converted.
0xff if Value is invalid.
@return The 8-bit value converted. Or 0xff if Value is invalid.
**/
UINT8
@ -753,6 +737,9 @@ CheckAndConvertBcd8ToDecimal8 (
@param RegisterB Value of Register B of RTC, indicating data mode
and hour format.
@retval EFI_INVALID_PARAMETER Parameters passed in are invalid.
@retval EFI_SUCCESS Convert RTC time to EFI time successfully.
**/
EFI_STATUS
ConvertRtcTimeToEfiTime (
@ -761,12 +748,12 @@ ConvertRtcTimeToEfiTime (
IN RTC_REGISTER_B RegisterB
)
{
BOOLEAN PM;
BOOLEAN IsPM;
if ((Time->Hour) & 0x80) {
PM = TRUE;
IsPM = TRUE;
} else {
PM = FALSE;
IsPM = FALSE;
}
Time->Hour = (UINT8) (Time->Hour & 0x7f);
@ -793,11 +780,11 @@ ConvertRtcTimeToEfiTime (
// If time is in 12 hour format, convert it to 24 hour format
//
if (RegisterB.Bits.MIL == 0) {
if (PM && Time->Hour < 12) {
if (IsPM && Time->Hour < 12) {
Time->Hour = (UINT8) (Time->Hour + 12);
}
if (!PM && Time->Hour == 12) {
if (!IsPM && Time->Hour == 12) {
Time->Hour = 0;
}
}
@ -809,23 +796,18 @@ ConvertRtcTimeToEfiTime (
return EFI_SUCCESS;
}
/**
Wait for a period for the RTC to be ready.
@param Timeout Tell how long it should take to wait.
@retval EFI_DEVICE_ERROR RTC device error.
@retval EFI_SUCCESS RTC is updated and ready.
**/
EFI_STATUS
RtcWaitToUpdate (
UINTN Timeout
)
/*++
Routine Description:
Arguments:
Returns:
--*/
// GC_TODO: Timeout - add argument and description to function comment
// GC_TODO: EFI_DEVICE_ERROR - add return value to function comment
// GC_TODO: EFI_DEVICE_ERROR - add return value to function comment
// GC_TODO: EFI_SUCCESS - add return value to function comment
{
RTC_REGISTER_A RegisterA;
RTC_REGISTER_D RegisterD;
@ -857,21 +839,19 @@ Returns:
return EFI_SUCCESS;
}
/**
See if all fields of a variable of EFI_TIME type is correct.
@param Time The time to be checked.
@retval EFI_INVALID_PARAMETER Some fields of Time are not correct.
@retval EFI_SUCCESS Time is a valid EFI_TIME variable.
**/
EFI_STATUS
RtcTimeFieldsValid (
IN EFI_TIME *Time
)
/*++
Routine Description:
Arguments:
Returns:
--*/
// GC_TODO: Time - add argument and description to function comment
// GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment
// GC_TODO: EFI_SUCCESS - add return value to function comment
{
if (Time->Year < 1998 ||
Time->Year > 2099 ||
@ -891,25 +871,18 @@ Routine Description:
return EFI_SUCCESS;
}
/**
See if field Day of an EFI_TIME is correct.
@param Time Its Day field is to be checked.
@retval TRUE Day field of Time is correct.
@retval FALSE Day field of Time is NOT correct.
**/
BOOLEAN
DayValid (
IN EFI_TIME *Time
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Time - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
{
INTN DayOfMonth[12];
@ -936,25 +909,18 @@ Returns:
return TRUE;
}
/**
Check if it is a leapyear.
@param Time The time to be checked.
@retval TRUE It is a leapyear.
@retval FALSE It is NOT a leapyear.
**/
BOOLEAN
IsLeapYear (
IN EFI_TIME *Time
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Time - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
{
if (Time->Year % 4 == 0) {
if (Time->Year % 100 == 0) {
@ -971,34 +937,35 @@ Returns:
}
}
/**
Converts time from EFI_TIME format defined by UEFI spec to RTC's.
This function converts time from EFI_TIME format defined by UEFI spec to RTC's.
If data mode of RTC is BCD, then converts EFI_TIME to it.
If RTC is in 12-hour format, then converts EFI_TIME to it.
@param Time On input, the time data read from UEFI to convert
On output, the time converted to RTC format
@param RegisterB Value of Register B of RTC, indicating data mode
@param Century It is set according to EFI_TIME Time.
**/
VOID
ConvertEfiTimeToRtcTime (
IN EFI_TIME *Time,
IN RTC_REGISTER_B RegisterB,
IN UINT8 *Century
IN OUT EFI_TIME *Time,
IN RTC_REGISTER_B RegisterB,
OUT UINT8 *Century
)
/*++
Routine Description:
Arguments:
Returns:
--*/
// GC_TODO: Time - add argument and description to function comment
// GC_TODO: RegisterB - add argument and description to function comment
// GC_TODO: Century - add argument and description to function comment
{
BOOLEAN PM;
BOOLEAN IsPM;
PM = TRUE;
IsPM = TRUE;
//
// Adjust hour field if RTC in in 12 hour mode
// Adjust hour field if RTC is in 12 hour mode
//
if (RegisterB.Bits.MIL == 0) {
if (Time->Hour < 12) {
PM = FALSE;
IsPM = FALSE;
}
if (Time->Hour >= 13) {
@ -1025,35 +992,28 @@ Returns:
//
// If we are in 12 hour mode and PM is set, then set bit 7 of the Hour field.
//
if (RegisterB.Bits.MIL == 0 && PM) {
if (RegisterB.Bits.MIL == 0 && IsPM) {
Time->Hour = (UINT8) (Time->Hour | 0x80);
}
}
/**
Compare the Hour, Minute and Second of the From time and the To time.
Only compare H/M/S in EFI_TIME and ignore other fields here.
@param From the first time
@param To the second time
@return >0 The H/M/S of the From time is later than those of To time
@return ==0 The H/M/S of the From time is same as those of To time
@return <0 The H/M/S of the From time is earlier than those of To time
**/
INTN
CompareHMS (
IN EFI_TIME *From,
IN EFI_TIME *To
)
/*++
Routine Description:
Compare the Hour, Minute and Second of the 'From' time and the 'To' time.
Only compare H/M/S in EFI_TIME and ignore other fields here.
Arguments:
From - the first time
To - the second time
Returns:
>0 : The H/M/S of the 'From' time is later than those of 'To' time
==0 : The H/M/S of the 'From' time is same as those of 'To' time
<0 : The H/M/S of the 'From' time is earlier than those of 'To' time
--*/
{
if ((From->Hour > To->Hour) ||
((From->Hour == To->Hour) && (From->Minute > To->Minute)) ||
@ -1066,28 +1026,20 @@ Returns:
}
}
/**
To check if second date is later than first date within 24 hours.
@param From the first date
@param To the second date
@retval TRUE From is previous to To within 24 hours.
@retval FALSE From is later, or it is previous to To more than 24 hours.
**/
BOOLEAN
IsWithinOneDay (
IN EFI_TIME *From,
IN EFI_TIME *To
)
/*++
Routine Description:
Judge whether two days are adjacent.
Arguments:
From - the first day
To - the second day
Returns:
TRUE - The interval of two days are within one day.
FALSE - The interval of two days exceed ony day or parameter error.
--*/
{
UINT8 DayOfMonth[12];
BOOLEAN Adjacent;

376
MdeModulePkg/Universal/PcatRealTimeClockRuntimeDxe/PcRtc.h
View File

@ -145,100 +145,100 @@ typedef union {
#pragma pack()
/**
Initialize RTC.
@param Global For global use inside this module.
@retval EFI_DEVICE_ERROR Initialization failed due to device error.
@retval EFI_SUCCESS Initialization successful.
**/
EFI_STATUS
PcRtcInit (
IN PC_RTC_MODULE_GLOBALS *Global
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Global - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
;
/**
Sets the current local time and date information.
@param Time A pointer to the current time.
@param Global For global use inside this module.
@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
PcRtcSetTime (
IN EFI_TIME *Time,
IN PC_RTC_MODULE_GLOBALS *Global
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Time - GC_TODO: add argument description
Global - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
;
/**
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 Global For global use inside this module.
@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
PcRtcGetTime (
OUT EFI_TIME *Time,
IN EFI_TIME_CAPABILITIES *Capabilities,
OUT EFI_TIME_CAPABILITIES *Capabilities, OPTIONAL
IN PC_RTC_MODULE_GLOBALS *Global
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Time - GC_TODO: add argument description
Capabilities - GC_TODO: add argument description
Global - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
;
/**
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.
If Enable is FALSE, then this parameter is optional, and may be NULL.
@param Global For global use inside this module.
@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
PcRtcSetWakeupTime (
IN BOOLEAN Enable,
OUT EFI_TIME *Time,
IN PC_RTC_MODULE_GLOBALS *Global
IN EFI_TIME *Time, OPTIONAL
IN PC_RTC_MODULE_GLOBALS *Global
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Enable - GC_TODO: add argument description
Time - GC_TODO: add argument description
Global - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
;
/**
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.
@param Global For global use inside this module.
@retval EFI_SUCCESS The alarm settings were returned.
@retval EFI_INVALID_PARAMETER Enabled is NULL.
@retval EFI_INVALID_PARAMETER Pending is NULL.
@retval EFI_INVALID_PARAMETER Time is NULL.
@retval EFI_DEVICE_ERROR The wakeup time could not be retrieved due to a hardware error.
@retval EFI_UNSUPPORTED A wakeup timer is not supported on this platform.
**/
EFI_STATUS
PcRtcGetWakeupTime (
OUT BOOLEAN *Enabled,
@ -246,157 +246,75 @@ PcRtcGetWakeupTime (
OUT EFI_TIME *Time,
IN PC_RTC_MODULE_GLOBALS *Global
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Enabled - GC_TODO: add argument description
Pending - GC_TODO: add argument description
Time - GC_TODO: add argument description
Global - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
;
/**
The user Entry Point for PcRTC module.
This is the entrhy point for PcRTC module. It installs the UEFI runtime service
including GetTime(),SetTime(),GetWakeupTime(),and SetWakeupTime().
@param ImageHandle The firmware allocated handle for the EFI image.
@param SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS The entry point is executed successfully.
@retval Others Some error occurs when executing this entry point.
**/
EFI_STATUS
EFIAPI
InitializePcRtc (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
ImageHandle - GC_TODO: add argument description
SystemTable - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
;
UINT8
BcdToDecimal (
IN UINT8 BcdValue
)
/*++
/**
See if all fields of a variable of EFI_TIME type is correct.
Routine Description:
@param Time The time to be checked.
GC_TODO: Add function description
Arguments:
BcdValue - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
;
@retval EFI_INVALID_PARAMETER Some fields of Time are not correct.
@retval EFI_SUCCESS Time is a valid EFI_TIME variable.
**/
EFI_STATUS
RtcTimeFieldsValid (
IN EFI_TIME *Time
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Time - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
;
UINT8
DecimaltoBcd (
IN UINT8 DecValue
)
/*++
/**
Converts time from EFI_TIME format defined by UEFI spec to RTC's.
Routine Description:
This function converts time from EFI_TIME format defined by UEFI spec to RTC's.
If data mode of RTC is BCD, then converts EFI_TIME to it.
If RTC is in 12-hour format, then converts EFI_TIME to it.
GC_TODO: Add function description
Arguments:
DecValue - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
;
@param Time On input, the time data read from UEFI to convert
On output, the time converted to RTC format
@param RegisterB Value of Register B of RTC, indicating data mode
@param Century It is set according to EFI_TIME Time.
**/
VOID
ConvertEfiTimeToRtcTime (
IN EFI_TIME *Time,
IN RTC_REGISTER_B RegisterB,
IN UINT8 *Century
IN OUT EFI_TIME *Time,
IN RTC_REGISTER_B RegisterB,
OUT UINT8 *Century
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Time - GC_TODO: add argument description
RegisterB - GC_TODO: add argument description
Century - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
;
/**
See if centry register of RTC is valid.
@retval EFI_SUCCESS Century register is valid.
@retval EFI_DEVICE_ERROR Century register is NOT valid.
**/
EFI_STATUS
RtcTestCenturyRegister (
VOID
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
None
Returns:
GC_TODO: add return values
--*/
;
/**
@ -413,6 +331,9 @@ Returns:
@param RegisterB Value of Register B of RTC, indicating data mode
and hour format.
@retval EFI_INVALID_PARAMETER Parameters passed in are invalid.
@retval EFI_SUCCESS Convert RTC time to EFI time successfully.
**/
EFI_STATUS
ConvertRtcTimeToEfiTime (
@ -421,76 +342,41 @@ ConvertRtcTimeToEfiTime (
IN RTC_REGISTER_B RegisterB
);
/**
Wait for a period for the RTC to be ready.
@param Timeout Tell how long it should take to wait.
@retval EFI_DEVICE_ERROR RTC device error.
@retval EFI_SUCCESS RTC is updated and ready.
**/
EFI_STATUS
RtcWaitToUpdate (
UINTN Timeout
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
Timeout - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
;
UINT8
RtcSaveContext (
IN PC_RTC_MODULE_GLOBALS *Global
)
/*++
/**
See if field Day of an EFI_TIME is correct.
Routine Description:
GC_TODO: Add function description
Arguments:
Global - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
;
VOID
RtcRestoreContext (
IN UINT8 SavedAddressRegister,
IN PC_RTC_MODULE_GLOBALS *Global
)
/*++
Routine Description:
GC_TODO: Add function description
Arguments:
SavedAddressRegister - GC_TODO: add argument description
Global - GC_TODO: add argument description
Returns:
GC_TODO: add return values
--*/
;
@param Time Its Day field is to be checked.
@retval TRUE Day field of Time is correct.
@retval FALSE Day field of Time is NOT correct.
**/
BOOLEAN
DayValid (
IN EFI_TIME *Time
);
/**
Check if it is a leapyear.
@param Time The time to be checked.
@retval TRUE It is a leapyear.
@retval FALSE It is NOT a leapyear.
**/
BOOLEAN
IsLeapYear (
IN EFI_TIME *Time

4
MdeModulePkg/Universal/PcatRealTimeClockRuntimeDxe/PcatRealTimeClockRuntimeDxe.inf
View File

@ -2,9 +2,8 @@
# PcRtc driver to install EFI_REAL_TIME_CLOCK_ARCH_PROTOCOL.
#
# This driver provides GetTime, SetTime, GetWakeupTime, SetWakeupTime services to Runtime Service Table.
# Copyright (c) 2006 - 2007, Intel Corporation.
#
# Copyright (c) 2006 - 2007 Intel Corporation. <BR>
# Copyright (c) 2006 - 2008 Intel Corporation. <BR>
# 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
@ -23,7 +22,6 @@
MODULE_TYPE = DXE_RUNTIME_DRIVER
VERSION_STRING = 1.0
EDK_RELEASE_VERSION = 0x00020000
EFI_SPECIFICATION_VERSION = 0x00020000
ENTRY_POINT = InitializePcRtc