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/** @file
Copyright (c) 2018, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that 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 "PchReset.h"
GLOBAL_REMOVE_IF_UNREFERENCED PCH_RESET_INSTANCE *mPchResetInstance;
STATIC UINT8 mDaysOfMonthInfo[12] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
GLOBAL_REMOVE_IF_UNREFERENCED PCH_RESET_DATA mPchPowerCycleReset = {
PCH_PLATFORM_SPECIFIC_RESET_STRING,
PCH_POWER_CYCLE_RESET_GUID
};
GLOBAL_REMOVE_IF_UNREFERENCED PCH_RESET_DATA mPchGlobalReset = {
PCH_PLATFORM_SPECIFIC_RESET_STRING,
PCH_GLOBAL_RESET_GUID
};
GLOBAL_REMOVE_IF_UNREFERENCED PCH_RESET_DATA mPchGlobalResetWithEc = {
PCH_PLATFORM_SPECIFIC_RESET_STRING,
PCH_GLOBAL_RESET_WITH_EC_GUID
};
GLOBAL_REMOVE_IF_UNREFERENCED UINT32 mCapsuleResetType = 0;
/**
Check if it is leap year
@param[in] Year year to be check
@retval True year is leap year
@retval FALSE year is not a leap year
**/
BOOLEAN
IsLeapYear (
IN UINT16 Year
)
{
return (Year % 4 == 0) && ((Year % 100 != 0) || (Year % 400 == 0));
}
/**
Set System Wakeup Alarm.
@param[in] WakeAfter Time offset in seconds to wake from S3
@retval EFI_SUCCESS Timer started successfully
**/
STATIC
EFI_STATUS
SetSystemWakeupAlarm (
IN UINT32 WakeAfter
)
{
EFI_STATUS Status;
EFI_TIME Time;
EFI_TIME_CAPABILITIES Capabilities;
UINT32 Reminder;
UINT16 ABase;
UINT8 DayOfMonth;
///
/// For an instant wake 2 seconds is a safe value
///
if (WakeAfter < 2) {
WakeAfter = 2;
}
Status = EfiGetTime (&Time, &Capabilities);
if (EFI_ERROR (Status)) {
return Status;
}
Reminder = WakeAfter + (UINT32) Time.Second;
Time.Second = Reminder % 60;
Reminder = Reminder / 60;
Reminder = Reminder + (UINT32) Time.Minute;
Time.Minute = Reminder % 60;
Reminder = Reminder / 60;
Reminder = Reminder + (UINT32) Time.Hour;
Time.Hour = Reminder % 24;
Reminder = Reminder / 24;
if (Reminder > 0) {
Reminder = Reminder + (UINT32) Time.Day;
if ((Time.Month == 2) && IsLeapYear (Time.Year)) {
DayOfMonth = 29;
} else {
DayOfMonth = mDaysOfMonthInfo[Time.Month - 1];
}
if (Reminder > DayOfMonth) {
Time.Day = (UINT8)Reminder - DayOfMonth;
Reminder = 1;
} else {
Time.Day = (UINT8)Reminder;
Reminder = 0;
}
}
if (Reminder > 0) {
if (Time.Month == 12) {
Time.Month = 1;
Time.Year = Time.Year + 1;
} else {
Time.Month = Time.Month + 1;
}
}
Status = EfiSetWakeupTime (TRUE, &Time);
if (EFI_ERROR (Status)) {
return Status;
}
ABase = mPchResetInstance->PchAcpiBase;
///
/// Clear RTC PM1 status
///
IoWrite16 (ABase + R_PCH_ACPI_PM1_STS, B_PCH_ACPI_PM1_STS_RTC);
///
/// set RTC_EN bit in PM1_EN to wake up from the alarm
///
IoWrite16 (
ABase + R_PCH_ACPI_PM1_EN,
(IoRead16 (ABase + R_PCH_ACPI_PM1_EN) | B_PCH_ACPI_PM1_EN_RTC)
);
return Status;
}
/**
Retrieve PCH platform specific ResetData
@param[in] Guid PCH platform specific reset GUID.
@param[out] DataSize The size of ResetData in bytes.
@retval ResetData A platform specific reset that the exact type of
the reset is defined by the EFI_GUID that follows
the Null-terminated Unicode string.
@retval NULL If Guid is not defined in PCH platform specific reset.
**/
VOID *
EFIAPI
GetResetData (
IN EFI_GUID *Guid,
OUT UINTN *DataSize
)
{
*DataSize = 0;
if (CompareGuid (Guid, &gPchPowerCycleResetGuid)) {
*DataSize = sizeof (mPchPowerCycleReset);
return (VOID *)&mPchPowerCycleReset;
} else if (CompareGuid (Guid, &gPchGlobalResetGuid)) {
*DataSize = sizeof (mPchGlobalReset);
return (VOID *)&mPchGlobalReset;
} else if (CompareGuid (Guid, &gPchGlobalResetWithEcGuid)) {
*DataSize = sizeof (mPchGlobalResetWithEc);
return (VOID *)&mPchGlobalResetWithEc;
}
return NULL;
}
/**
Execute Pch Reset from the host controller.
@param[in] This Pointer to the PCH_RESET_PROTOCOL instance.
@param[in] ResetType UEFI defined reset type.
@param[in] DataSize The size of ResetData in bytes.
@param[in] ResetData Optional element used to introduce a platform specific reset.
The exact type of the reset is defined by the EFI_GUID that follows
the Null-terminated Unicode string.
@retval EFI_SUCCESS Successfully completed.
@retval EFI_INVALID_PARAMETER If ResetType is invalid.
**/
EFI_STATUS
EFIAPI
Reset (
IN PCH_RESET_PROTOCOL *This,
IN EFI_RESET_TYPE ResetType,
IN UINTN DataSize,
IN VOID *ResetData OPTIONAL
)
{
PCH_RESET_INSTANCE *PchResetInstance;
EFI_STATUS Status;
PCH_RESET_TYPE PchResetType;
PchResetInstance = PCH_RESET_INSTANCE_FROM_THIS (This);
PchResetType = (PCH_RESET_TYPE)ResetType;
Status = PchReset (PchResetInstance, PchResetType);
return Status;
}
/**
Calling this function causes a system-wide reset. This sets
all circuitry within the system to its initial state. This type of reset
is asynchronous to system operation and operates without regard to
cycle boundaries.
System reset should not return, if it returns, it means the system does
not support cold reset.
**/
VOID
EFIAPI
ResetCold (
VOID
)
{
PchReset (mPchResetInstance, (PCH_RESET_TYPE) EfiResetCold);
}
/**
Calling this function causes a system-wide initialization. The processors
are set to their initial state, and pending cycles are not corrupted.
System reset should not return, if it returns, it means the system does
not support warm reset.
**/
VOID
EFIAPI
ResetWarm (
VOID
)
{
PchReset (mPchResetInstance, (PCH_RESET_TYPE) EfiResetWarm);
}
/**
Calling this function causes the system to enter a power state equivalent
to the ACPI G2/S5 or G3 states.
System shutdown should not return, if it returns, it means the system does
not support shut down reset.
**/
VOID
EFIAPI
ResetShutdown (
VOID
)
{
PchReset (mPchResetInstance, (PCH_RESET_TYPE) EfiResetShutdown);
}
/**
Calling this function causes the system to enter a power state for platform specific.
@param[in] ResetStatus The status code for the reset.
@param[in] DataSize The size of ResetData in bytes.
@param[in] ResetData Optional element used to introduce a platform specific reset.
The exact type of the reset is defined by the EFI_GUID that follows
the Null-terminated Unicode string.
**/
VOID
EFIAPI
ResetPlatformSpecific (
IN EFI_STATUS ResetStatus,
IN UINTN DataSize,
IN VOID *ResetData OPTIONAL
)
{
EFI_GUID *GuidPtr;
if (ResetData == NULL) {
if (!EfiAtRuntime ()) {
DEBUG ((DEBUG_ERROR, "[DxeRuntimeResetSystemLib] ResetData is not available.\n"));
}
return;
}
GuidPtr = (EFI_GUID *) ((UINT8 *) ResetData + DataSize - sizeof (EFI_GUID));
if (CompareGuid (GuidPtr, &gPchPowerCycleResetGuid)) {
PchReset (mPchResetInstance, (PCH_RESET_TYPE) PowerCycleReset);
} else if (CompareGuid (GuidPtr, &gPchGlobalResetGuid)) {
PchReset (mPchResetInstance, (PCH_RESET_TYPE) GlobalReset);
} else if (CompareGuid (GuidPtr, &gPchGlobalResetWithEcGuid)) {
PchReset (mPchResetInstance, (PCH_RESET_TYPE) GlobalResetWithEc);
} else {
return;
}
}
/**
Calling this function causes the system to enter a power state for capsule update.
Reset update should not return, if it returns, it means the system does
not support capsule update.
**/
VOID
EFIAPI
EnterS3WithImmediateWake (
VOID
)
{
PchReset (mPchResetInstance, (PCH_RESET_TYPE) EfiResetWarm);
}
/**
<b>PchReset Runtime DXE Driver Entry Point</b>\n
- <b>Introduction</b>\n
The PchReset Runtime DXE driver provide a standard way for other modules to
use the PCH Reset Interface in DXE/SMM/Runtime environments. It has no longer
hooked ResetSystem() function of the runtime service table.
- @pre
- If there is any driver which needs to run the callback function right before
issuing the reset, PCH Reset Callback Protocol will need to be installed
before PCH Reset Runtime DXE driver. If PchReset Runtime DXE driver is run
before Status Code Runtime Protocol is installed and there is the need
to use Status code in the driver, it will be necessary to add EFI_STATUS_CODE_RUNTIME_PROTOCOL_GUID
to the dependency file.
- @link _PCH_RESET_CALLBACK_PROTOCOL PCH_RESET_CALLBACK_PROTOCOL @endlink
- @result
The Reset driver produces @link _PCH_RESET_PROTOCOL PCH_RESET_PROTOCOL @endlink
@param[in] ImageHandle Image handle of the loaded driver
@param[in] SystemTable Pointer to the System Table
@retval EFI_SUCCESS Thread can be successfully created
@retval EFI_OUT_OF_RESOURCES Cannot allocate protocol data structure
@retval EFI_DEVICE_ERROR Cannot create the timer service
**/
EFI_STATUS
EFIAPI
InstallPchReset (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
UINT64 BaseAddress;
UINT64 Length;
UINT32 PwrmBaseAddress;
EFI_GCD_MEMORY_SPACE_DESCRIPTOR MemorySpaceDescriptor;
UINT64 Attributes;
EFI_EVENT AddressChangeEvent;
EFI_PEI_HOB_POINTERS HobPtr;
PCH_POLICY_HOB *PchPolicyHob;
DEBUG ((DEBUG_INFO, "InstallPchReset() Start\n"));
//
// Set PMC PCI address space to RUNTIME MEMORY.
//
BaseAddress = MmPciBase(
DEFAULT_PCI_BUS_NUMBER_PCH,
PCI_DEVICE_NUMBER_PCH_PMC,
PCI_FUNCTION_NUMBER_PCH_PMC
);
Length = 0x1000; // 4KB
Status = gDS->GetMemorySpaceDescriptor (BaseAddress, &MemorySpaceDescriptor);
ASSERT_EFI_ERROR (Status);
Attributes = MemorySpaceDescriptor.Attributes | EFI_MEMORY_RUNTIME;
Status = gDS->SetMemorySpaceAttributes (
BaseAddress,
Length,
Attributes
);
ASSERT_EFI_ERROR (Status);
//
// Set PWRM MMIO address space to RUNTIME MEMORY.
//
PchPwrmBaseGet (&PwrmBaseAddress);
Length = 0x10000; // 64KB
Status = gDS->GetMemorySpaceDescriptor (PwrmBaseAddress, &MemorySpaceDescriptor);
ASSERT_EFI_ERROR (Status);
Attributes = MemorySpaceDescriptor.Attributes | EFI_MEMORY_RUNTIME;
Status = gDS->SetMemorySpaceAttributes (
PwrmBaseAddress,
Length,
Attributes
);
ASSERT_EFI_ERROR (Status);
///
/// Allocate Runtime memory for the PchReset protocol instance.
///
mPchResetInstance = AllocateRuntimeZeroPool (sizeof (PCH_RESET_INSTANCE));
if (mPchResetInstance == NULL) {
return EFI_OUT_OF_RESOURCES;
}
Status = PchResetConstructor (mPchResetInstance);
///
/// Create Address Change event
///
///
Status = gBS->CreateEventEx (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
PchResetVirtualAddressChangeEvent,
NULL,
&gEfiEventVirtualAddressChangeGuid,
&AddressChangeEvent
);
ASSERT_EFI_ERROR (Status);
HobPtr.Guid = GetFirstGuidHob (&gPchPolicyHobGuid);
if (HobPtr.Guid != NULL) {
PchPolicyHob = GET_GUID_HOB_DATA (HobPtr.Guid);
mCapsuleResetType = PchPolicyHob->PmConfig.CapsuleResetType;
}
///
/// The Lib Deconstruct will automatically be called when entrypoint return error.
///
DEBUG ((DEBUG_INFO, "InstallPchReset() End\n"));
return Status;
}
/**
If need be, do any special reset required for capsules. For this
implementation where we're called from the ResetSystem() api,
just set our capsule variable and return to let the caller
do a soft reset.
**/
VOID
CapsuleS3Reset (
VOID
)
{
UINT32 Data32;
UINT32 Eflags;
UINT16 ABase;
DEBUG ((DEBUG_INFO, "Capsule Present: Will be issuing S3 reset.\n"));
///
/// Wake up system 2 seconds after putting system into S3 to complete the reset operation.
///
SetSystemWakeupAlarm (2);
///
/// Process capsules across a system reset.
///
ABase = mPchResetInstance->PchAcpiBase;
ASSERT (ABase != 0);
Data32 = IoRead32 ((UINTN) (ABase + R_PCH_ACPI_PM1_CNT));
Data32 = (UINT32) ((Data32 & ~(B_PCH_ACPI_PM1_CNT_SLP_TYP + B_PCH_ACPI_PM1_CNT_SLP_EN)) | V_PCH_ACPI_PM1_CNT_S3);
Eflags = (UINT32) AsmReadEflags ();
if ((Eflags & 0x200)) {
DisableInterrupts ();
}
AsmWbinvd ();
AsmWriteCr0 (AsmReadCr0 () | 0x060000000);
IoWrite32 (
(UINTN) (ABase + R_PCH_ACPI_PM1_CNT),
(UINT32) Data32
);
Data32 = Data32 | B_PCH_ACPI_PM1_CNT_SLP_EN;
IoWrite32 (
(UINTN) (ABase + R_PCH_ACPI_PM1_CNT),
(UINT32) Data32
);
if ((Eflags & 0x200)) {
EnableInterrupts ();
}
///
/// Should not return
///
CpuDeadLoop ();
}
/**
Execute call back function for Pch Reset.
@param[in] PchResetType Pch Reset Types which includes PowerCycle, Globalreset.
@retval EFI_SUCCESS The callback function has been done successfully
@retval EFI_NOT_FOUND Failed to find Pch Reset Callback protocol. Or, none of
callback protocol is installed.
@retval Others Do not do any reset from PCH
**/
EFI_STATUS
EFIAPI
PchResetCallback (
IN PCH_RESET_TYPE PchResetType
)
{
EFI_STATUS Status;
UINTN NumHandles;
EFI_HANDLE *HandleBuffer;
UINTN Index;
PCH_RESET_CALLBACK_PROTOCOL *PchResetCallback;
UINTN Size;
UINTN CapsuleDataPtr;
if (EfiAtRuntime () == FALSE) {
DEBUG((DEBUG_ERROR, "Not in Runtime"));
///
/// Retrieve all instances of Pch Reset Callback protocol
///
Status = gBS->LocateHandleBuffer (
ByProtocol,
&gPchResetCallbackProtocolGuid,
NULL,
&NumHandles,
&HandleBuffer
);
if (EFI_ERROR (Status)) {
///
/// Those drivers that need to install Pch Reset Callback protocol have the responsibility
/// to make sure themselves execute before Pch Reset Runtime driver.
///
if (Status == EFI_NOT_FOUND) {
DEBUG ((DEBUG_ERROR | DEBUG_INFO, "Or, none of Pch Reset callback protocol is installed.\n"));
}
return Status;
}
for (Index = 0; Index < NumHandles; Index++) {
Status = gBS->HandleProtocol (
HandleBuffer[Index],
&gPchResetCallbackProtocolGuid,
(VOID **) &PchResetCallback
);
ASSERT_EFI_ERROR (Status);
if (!EFI_ERROR (Status)) {
DEBUG((EFI_D_ERROR, "Calling PchResetCallback %d\n", Index));
PchResetCallback->ResetCallback (PchResetType);
} else {
DEBUG ((DEBUG_ERROR | DEBUG_INFO, "Failed to locate Pch Reset Callback protocol.\n"));
return Status;
}
}
}
DEBUG((EFI_D_ERROR, "PchResetCallback After Runtime Check\n"));
if(PchResetType == WarmReset) {
///
/// Check if there are pending capsules to process
///
DEBUG((EFI_D_ERROR, "PchResetCallback Warmreset\n"));
Size = sizeof (CapsuleDataPtr);
Status = EfiGetVariable (
EFI_CAPSULE_VARIABLE_NAME,
&gEfiCapsuleVendorGuid,
NULL,
&Size,
(VOID *) &CapsuleDataPtr
);
if (Status == EFI_SUCCESS) {
if (mCapsuleResetType == CAPSULE_RESET_S3) { //default value S3 resume
CapsuleS3Reset ();
}
AsmWbinvd ();
}
}
return EFI_SUCCESS;
}
/**
Fixup internal data pointers so that the services can be called in virtual mode.
@param[in] Event The event registered.
@param[in] Context Event context. Not used in this event handler.
**/
VOID
EFIAPI
PchResetVirtualAddressChangeEvent (
IN EFI_EVENT Event,
IN VOID *Context
)
{
gRT->ConvertPointer (EFI_INTERNAL_POINTER, (VOID *) &(mPchResetInstance->PchPmcBase));
gRT->ConvertPointer (EFI_INTERNAL_POINTER, (VOID *) &(mPchResetInstance->PchPwrmBase));
gRT->ConvertPointer (EFI_INTERNAL_POINTER, (VOID *) &(mPchResetInstance));
}
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