diff options
Diffstat (limited to 'Vlv2TbltDevicePkg/PlatformSmm/Platform.c')
| -rw-r--r-- | Vlv2TbltDevicePkg/PlatformSmm/Platform.c | 997 |
1 files changed, 0 insertions, 997 deletions
diff --git a/Vlv2TbltDevicePkg/PlatformSmm/Platform.c b/Vlv2TbltDevicePkg/PlatformSmm/Platform.c deleted file mode 100644 index 8b46fbdfd1..0000000000 --- a/Vlv2TbltDevicePkg/PlatformSmm/Platform.c +++ /dev/null @@ -1,997 +0,0 @@ -/** @file
-
- Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>
-
- SPDX-License-Identifier: BSD-2-Clause-Patent
-
-
-
-Module Name:
-
- Platform.c
-
-Abstract:
-
- This is a generic template for a child of the IchSmm driver.
-
-
---*/
-
-#include "SmmPlatform.h"
-#include <Protocol/CpuIo2.h>
-
-
-//
-// Local variables
-//
-typedef struct {
- UINT8 Device;
- UINT8 Function;
-} EFI_PCI_BUS_MASTER;
-
-EFI_PCI_BUS_MASTER mPciBm[] = {
- { PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORTS, PCI_FUNCTION_NUMBER_PCH_PCIE_ROOT_PORT_1 },
- { PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORTS, PCI_FUNCTION_NUMBER_PCH_PCIE_ROOT_PORT_2 },
- { PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORTS, PCI_FUNCTION_NUMBER_PCH_PCIE_ROOT_PORT_3 },
- { PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORTS, PCI_FUNCTION_NUMBER_PCH_PCIE_ROOT_PORT_4 },
- { PCI_DEVICE_NUMBER_PCH_USB, PCI_FUNCTION_NUMBER_PCH_EHCI }
-};
-
-
-UINT16 mAcpiBaseAddr;
-SYSTEM_CONFIGURATION mSystemConfiguration;
-EFI_SMM_VARIABLE_PROTOCOL *mSmmVariable;
-EFI_GLOBAL_NVS_AREA_PROTOCOL *mGlobalNvsAreaPtr;
-
-UINT16 mPM1_SaveState16;
-UINT32 mGPE_SaveState32;
-
-BOOLEAN mSetSmmVariableProtocolSmiAllowed = TRUE;
-
-
-//
-// Variables. Need to initialize this from Setup
-//
-BOOLEAN mWakeOnLanS5Variable;
-BOOLEAN mWakeOnRtcVariable;
-UINT8 mWakeupDay;
-UINT8 mWakeupHour;
-UINT8 mWakeupMinute;
-UINT8 mWakeupSecond;
-
-//
-// Use an enum. 0 is Stay Off, 1 is Last State, 2 is Stay On
-//
-UINT8 mAcLossVariable;
-
-
-static
-UINT8 mTco1Sources[] = {
- IchnNmi
-};
-
-UINTN
-DevicePathSize (
- IN EFI_DEVICE_PATH_PROTOCOL *DevicePath
- );
-
-VOID
-S4S5ProgClock();
-
-EFI_STATUS
-InitRuntimeScriptTable (
- IN EFI_SYSTEM_TABLE *SystemTable
- );
-
-VOID
-S5SleepWakeOnRtcCallBack (
- IN EFI_HANDLE DispatchHandle,
- IN EFI_SMM_SX_DISPATCH_CONTEXT *DispatchContext
- );
-
-
-VOID
-EnableS5WakeOnRtc();
-
-UINT8
-HexToBcd(
- UINT8 HexValue
- );
-
-UINT8
-BcdToHex(
- IN UINT8 BcdValue
- );
-
-
-VOID
-CpuSmmSxWorkAround(
- );
-
-/**
- Initializes the SMM Handler Driver
-
- @param ImageHandle
- @param SystemTable
-
- @retval None
-
-**/
-EFI_STATUS
-EFIAPI
-InitializePlatformSmm (
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE *SystemTable
- )
-{
- EFI_STATUS Status;
- UINT8 Index;
- EFI_HANDLE Handle;
- EFI_SMM_POWER_BUTTON_DISPATCH_CONTEXT PowerButtonContext;
- EFI_SMM_POWER_BUTTON_DISPATCH_PROTOCOL *PowerButtonDispatch;
- EFI_SMM_ICHN_DISPATCH_CONTEXT IchnContext;
- EFI_SMM_ICHN_DISPATCH_PROTOCOL *IchnDispatch;
- EFI_SMM_SX_DISPATCH_PROTOCOL *SxDispatch;
- EFI_SMM_SX_DISPATCH_CONTEXT EntryDispatchContext;
- EFI_SMM_SW_DISPATCH_PROTOCOL *SwDispatch;
- EFI_SMM_SW_DISPATCH_CONTEXT SwContext;
- UINTN VarSize;
- EFI_BOOT_MODE BootMode;
-
- Handle = NULL;
-
- //
- // Locate the Global NVS Protocol.
- //
- Status = gBS->LocateProtocol (
- &gEfiGlobalNvsAreaProtocolGuid,
- NULL,
- (void **)&mGlobalNvsAreaPtr
- );
- ASSERT_EFI_ERROR (Status);
-
-
- //
- // Get the ACPI Base Address
- //
-
- mAcpiBaseAddr = PchLpcPciCfg16( R_PCH_LPC_ACPI_BASE ) & B_PCH_LPC_ACPI_BASE_BAR;
-
- VarSize = sizeof(SYSTEM_CONFIGURATION);
- Status = SystemTable->RuntimeServices->GetVariable(
- L"Setup",
- &gEfiSetupVariableGuid,
- NULL,
- &VarSize,
- &mSystemConfiguration
- );
- if (EFI_ERROR (Status) || VarSize != sizeof(SYSTEM_CONFIGURATION)) {
- //The setup variable is corrupted
- VarSize = sizeof(SYSTEM_CONFIGURATION);
- Status = SystemTable->RuntimeServices->GetVariable(
- L"SetupRecovery",
- &gEfiSetupVariableGuid,
- NULL,
- &VarSize,
- &mSystemConfiguration
- );
- ASSERT_EFI_ERROR (Status);
- }
- if (!EFI_ERROR(Status)) {
- mAcLossVariable = mSystemConfiguration.StateAfterG3;
-
- //
- // If LAN is disabled, WOL function should be disabled too.
- //
- if (mSystemConfiguration.Lan == 0x01){
- mWakeOnLanS5Variable = mSystemConfiguration.WakeOnLanS5;
- } else {
- mWakeOnLanS5Variable = FALSE;
- }
-
- mWakeOnRtcVariable = mSystemConfiguration.WakeOnRtcS5;
- }
-
- BootMode = GetBootModeHob ();
-
- //
- // Get the Power Button protocol
- //
- Status = gBS->LocateProtocol(
- &gEfiSmmPowerButtonDispatchProtocolGuid,
- NULL,
- (void **)&PowerButtonDispatch
- );
- ASSERT_EFI_ERROR(Status);
-
- if (BootMode != BOOT_ON_FLASH_UPDATE) {
- //
- // Register for the power button event
- //
- PowerButtonContext.Phase = PowerButtonEntry;
- Status = PowerButtonDispatch->Register(
- PowerButtonDispatch,
- PowerButtonCallback,
- &PowerButtonContext,
- &Handle
- );
- ASSERT_EFI_ERROR(Status);
- }
- //
- // Get the Sx dispatch protocol
- //
- Status = gBS->LocateProtocol (
- &gEfiSmmSxDispatchProtocolGuid,
- NULL,
- (void **)&SxDispatch
- );
- ASSERT_EFI_ERROR(Status);
-
- //
- // Register entry phase call back function
- //
- EntryDispatchContext.Type = SxS3;
- EntryDispatchContext.Phase = SxEntry;
-
- Status = SxDispatch->Register (
- SxDispatch,
- (EFI_SMM_SX_DISPATCH)SxSleepEntryCallBack,
- &EntryDispatchContext,
- &Handle
- );
-
-
- EntryDispatchContext.Type = SxS4;
-
- Status = SxDispatch->Register (
- SxDispatch,
- S4S5CallBack,
- &EntryDispatchContext,
- &Handle
- );
- ASSERT_EFI_ERROR(Status);
-
-
- EntryDispatchContext.Type = SxS5;
-
- Status = SxDispatch->Register (
- SxDispatch,
- S4S5CallBack,
- &EntryDispatchContext,
- &Handle
- );
- ASSERT_EFI_ERROR(Status);
-
- Status = SxDispatch->Register (
- SxDispatch,
- S5SleepAcLossCallBack,
- &EntryDispatchContext,
- &Handle
- );
- ASSERT_EFI_ERROR(Status);
-
- //
- // Get the Sw dispatch protocol
- //
- Status = gBS->LocateProtocol (
- &gEfiSmmSwDispatchProtocolGuid,
- NULL,
- (void **)&SwDispatch
- );
- ASSERT_EFI_ERROR(Status);
-
- //
- // Register ACPI enable handler
- //
- SwContext.SwSmiInputValue = ACPI_ENABLE;
- Status = SwDispatch->Register (
- SwDispatch,
- EnableAcpiCallback,
- &SwContext,
- &Handle
- );
- ASSERT_EFI_ERROR(Status);
-
- //
- // Register ACPI disable handler
- //
- SwContext.SwSmiInputValue = ACPI_DISABLE;
- Status = SwDispatch->Register (
- SwDispatch,
- DisableAcpiCallback,
- &SwContext,
- &Handle
- );
- ASSERT_EFI_ERROR(Status);
-
-
- //
- // Register for SmmReadyToBootCallback
- //
- SwContext.SwSmiInputValue = SMI_SET_SMMVARIABLE_PROTOCOL;
- Status = SwDispatch->Register(
- SwDispatch,
- SmmReadyToBootCallback,
- &SwContext,
- &Handle
- );
- ASSERT_EFI_ERROR(Status);
-
- //
- // Get the ICHn protocol
- //
- Status = gBS->LocateProtocol(
- &gEfiSmmIchnDispatchProtocolGuid,
- NULL,
- (void **)&IchnDispatch
- );
- ASSERT_EFI_ERROR(Status);
-
- //
- // Register for the events that may happen that we do not care.
- // This is true for SMI related to TCO since TCO is enabled by BIOS WP
- //
- for (Index = 0; Index < sizeof(mTco1Sources)/sizeof(UINT8); Index++) {
- IchnContext.Type = mTco1Sources[Index];
- Status = IchnDispatch->Register(
- IchnDispatch,
- (EFI_SMM_ICHN_DISPATCH)DummyTco1Callback,
- &IchnContext,
- &Handle
- );
- ASSERT_EFI_ERROR( Status );
- }
-
- //
- // Lock TCO_EN bit.
- //
- IoWrite16( mAcpiBaseAddr + R_PCH_TCO_CNT, IoRead16( mAcpiBaseAddr + R_PCH_TCO_CNT ) | B_PCH_TCO_CNT_LOCK );
-
- //
- // Set to power on from G3 dependent on WOL instead of AC Loss variable in order to support WOL from G3 feature.
- //
- //
- // Set wake from G3 dependent on AC Loss variable and Wake On LAN variable.
- // This is because no matter how, if WOL enabled or AC Loss variable not disabled, the board needs to wake from G3 to program the LAN WOL settings.
- // This needs to be done after LAN enable/disable so that the PWR_FLR state clear not impacted the WOL from G3 feature.
- //
- if (mAcLossVariable != 0x00) {
- SetAfterG3On (TRUE);
- } else {
- SetAfterG3On (FALSE);
- }
-
-
-
-
- return EFI_SUCCESS;
-}
-
-VOID
-EFIAPI
-SmmReadyToBootCallback (
- IN EFI_HANDLE DispatchHandle,
- IN EFI_SMM_SW_DISPATCH_CONTEXT *DispatchContext
- )
-{
- EFI_STATUS Status;
-
- if (mSetSmmVariableProtocolSmiAllowed)
- {
- //
- // It is okay to use gBS->LocateProtocol here because
- // we are still in trusted execution.
- //
- Status = gBS->LocateProtocol(
- &gEfiSmmVariableProtocolGuid,
- NULL,
- (void **)&mSmmVariable
- );
-
- ASSERT_EFI_ERROR(Status);
-
- //
- // mSetSmmVariableProtocolSmiAllowed will prevent this function from
- // being executed more than 1 time.
- //
- mSetSmmVariableProtocolSmiAllowed = FALSE;
- }
-
-}
-
-/**
-
- @param DispatchHandle The handle of this callback, obtained when registering
- @param DispatchContext The predefined context which contained sleep type and phase
-
-
- @retval EFI_SUCCESS Operation successfully performed
-
-**/
-EFI_STATUS
-EFIAPI
-SxSleepEntryCallBack (
- IN EFI_HANDLE DispatchHandle,
- IN EFI_SMM_SX_DISPATCH_CONTEXT *DispatchContext
- )
-{
- EFI_STATUS Status;
-
- Status = SaveRuntimeScriptTable ();
- if (EFI_ERROR(Status)) {
- return Status;
- }
-
- //
- // Workaround for S3 wake hang if C State is enabled
- //
- CpuSmmSxWorkAround();
-
- return EFI_SUCCESS;
-}
-
-VOID
-CpuSmmSxWorkAround(
- )
-{
- UINT64 MsrValue;
-
- MsrValue = AsmReadMsr64 (0xE2);
-
- if (MsrValue & BIT15) {
- return;
- }
-
- if (MsrValue & BIT10) {
- MsrValue &= ~BIT10;
- AsmWriteMsr64 (0xE2, MsrValue);
- }
-}
-
-VOID
-ClearP2PBusMaster(
- )
-{
- UINT8 Command;
- UINT8 Index;
-
- for (Index = 0; Index < sizeof(mPciBm)/sizeof(EFI_PCI_BUS_MASTER); Index++) {
- Command = MmioRead8 (
- MmPciAddress (0,
- DEFAULT_PCI_BUS_NUMBER_PCH,
- mPciBm[Index].Device,
- mPciBm[Index].Function,
- PCI_COMMAND_OFFSET
- )
- );
- Command &= ~EFI_PCI_COMMAND_BUS_MASTER;
- MmioWrite8 (
- MmPciAddress (0,
- DEFAULT_PCI_BUS_NUMBER_PCH,
- mPciBm[Index].Device,
- mPciBm[Index].Function,
- PCI_COMMAND_OFFSET
- ),
- Command
- );
- }
-}
-
-/**
-
- Set the AC Loss to turn on or off.
-
-**/
-VOID
-SetAfterG3On (
- BOOLEAN Enable
- )
-{
- UINT8 PmCon1;
-
- //
- // ICH handling portion
- //
- PmCon1 = MmioRead8 ( PMC_BASE_ADDRESS + R_PCH_PMC_GEN_PMCON_1 );
- PmCon1 &= ~B_PCH_PMC_GEN_PMCON_AFTERG3_EN;
- if (Enable) {
- PmCon1 |= B_PCH_PMC_GEN_PMCON_AFTERG3_EN;
- }
- MmioWrite8 (PMC_BASE_ADDRESS + R_PCH_PMC_GEN_PMCON_1, PmCon1);
-
-}
-
-/**
- When a power button event happens, it shuts off the machine
-
-**/
-VOID
-EFIAPI
-PowerButtonCallback (
- IN EFI_HANDLE DispatchHandle,
- IN EFI_SMM_POWER_BUTTON_DISPATCH_CONTEXT *DispatchContext
- )
-{
- //
- // Check what the state to return to after AC Loss. If Last State, then
- // set it to Off.
- //
- UINT16 data16;
-
- if (mWakeOnRtcVariable) {
- EnableS5WakeOnRtc();
- }
-
- if (mAcLossVariable == 1) {
- SetAfterG3On (TRUE);
- }
-
- ClearP2PBusMaster();
-
- //
- // Program clock chip
- //
- S4S5ProgClock();
-
-
- data16 = (UINT16)(IoRead16(mAcpiBaseAddr + R_PCH_ACPI_GPE0a_EN));
- data16 &= B_PCH_ACPI_GPE0a_EN_PCI_EXP;
-
-
- //
- // Clear Sleep SMI Status
- //
- IoWrite16 (mAcpiBaseAddr + R_PCH_SMI_STS,
- (UINT16)(IoRead16 (mAcpiBaseAddr + R_PCH_SMI_STS) | B_PCH_SMI_STS_ON_SLP_EN));
- //
- // Clear Sleep Type Enable
- //
- IoWrite16 (mAcpiBaseAddr + R_PCH_SMI_EN,
- (UINT16)(IoRead16 (mAcpiBaseAddr + R_PCH_SMI_EN) & (~B_PCH_SMI_EN_ON_SLP_EN)));
-
- //
- // Clear Power Button Status
- //
- IoWrite16(mAcpiBaseAddr + R_PCH_ACPI_PM1_STS, B_PCH_ACPI_PM1_STS_PWRBTN);
-
- //
- // Shut it off now!
- //
- IoWrite16(mAcpiBaseAddr + R_PCH_ACPI_PM1_CNT, V_PCH_ACPI_PM1_CNT_S5);
- IoWrite16(mAcpiBaseAddr + R_PCH_ACPI_PM1_CNT, B_PCH_ACPI_PM1_CNT_SLP_EN | V_PCH_ACPI_PM1_CNT_S5);
-
- //
- // Should not return
- //
- CpuDeadLoop();
-}
-
-
-/**
- @param DispatchHandle - The handle of this callback, obtained when registering
-
- @param DispatchContext - The predefined context which contained sleep type and phase
-
-**/
-VOID
-EFIAPI
-S5SleepAcLossCallBack (
- IN EFI_HANDLE DispatchHandle,
- IN EFI_SMM_SX_DISPATCH_CONTEXT *DispatchContext
- )
-{
- //
- // Check what the state to return to after AC Loss. If Last State, then
- // set it to Off.
- //
- if (mAcLossVariable == 1) {
- SetAfterG3On (TRUE);
- }
-}
-
-/**
-
- @param DispatchHandle The handle of this callback, obtained when registering
- @param DispatchContext The predefined context which contained sleep type and phase
-
- @retval Clears the Save State bit in the clock.
-
-**/
-VOID
-EFIAPI
-S4S5CallBack (
- IN EFI_HANDLE DispatchHandle,
- IN EFI_SMM_SX_DISPATCH_CONTEXT *DispatchContext
- )
-{
-
- UINT32 Data32;
-
- //
- // Enable/Disable USB Charging
- //
- if (mSystemConfiguration.UsbCharging == 0x01) {
- Data32 = IoRead32 (GPIO_BASE_ADDRESS + R_PCH_GPIO_SC_LVL);
- Data32 |= BIT8;
- IoWrite32(GPIO_BASE_ADDRESS + R_PCH_GPIO_SC_LVL, Data32);
- }
-
-}
-
-
-VOID
-S4S5ProgClock()
-{
-}
-
-/**
- SMI handler to enable ACPI mode
-
- Dispatched on reads from APM port with value 0xA0
-
- Disables the SW SMI Timer.
- ACPI events are disabled and ACPI event status is cleared.
- SCI mode is then enabled.
-
- Disable SW SMI Timer
-
- Clear all ACPI event status and disable all ACPI events
- Disable PM sources except power button
- Clear status bits
-
- Disable GPE0 sources
- Clear status bits
-
- Disable GPE1 sources
- Clear status bits
-
- Guarantee day-of-month alarm is invalid (ACPI 5.0 Section 4.8.2.4 "Real Time Clock Alarm")
-
- Enable SCI
-
- @param DispatchHandle - EFI Handle
- @param DispatchContext - Pointer to the EFI_SMM_SW_DISPATCH_CONTEXT
-
- @retval Nothing
-
-**/
-VOID
-EFIAPI
-EnableAcpiCallback (
- IN EFI_HANDLE DispatchHandle,
- IN EFI_SMM_SW_DISPATCH_CONTEXT *DispatchContext
- )
-{
- UINT32 SmiEn;
- UINT16 Pm1Cnt;
- UINT16 wordValue;
- UINT32 RegData32;
-
- //
- // Disable SW SMI Timer
- //
- SmiEn = IoRead32(mAcpiBaseAddr + R_PCH_SMI_EN);
- SmiEn &= ~B_PCH_SMI_STS_SWSMI_TMR;
- IoWrite32(mAcpiBaseAddr + R_PCH_SMI_EN, SmiEn);
-
- wordValue = IoRead16(mAcpiBaseAddr + R_PCH_ACPI_PM1_STS);
- if(wordValue & B_PCH_ACPI_PM1_STS_WAK) {
- IoWrite32((mAcpiBaseAddr + R_PCH_ACPI_GPE0a_EN), 0x0000);
- IoWrite32((mAcpiBaseAddr + R_PCH_ACPI_GPE0a_STS), 0xffffffff);
- }
- else {
- mPM1_SaveState16 = IoRead16(mAcpiBaseAddr + R_PCH_ACPI_PM1_EN);
-
- //
- // Disable PM sources except power button
- //
- // power button is enabled only for PCAT. Disabled it on Tablet platform
- //
- IoWrite16(mAcpiBaseAddr + R_PCH_ACPI_PM1_EN, B_PCH_ACPI_PM1_EN_PWRBTN);
- IoWrite16(mAcpiBaseAddr + R_PCH_ACPI_PM1_STS, 0xffff);
-
- mGPE_SaveState32 = IoRead16(mAcpiBaseAddr + R_PCH_ACPI_GPE0a_EN);
- IoWrite32(mAcpiBaseAddr + R_PCH_ACPI_GPE0a_EN, 0x0000);
- IoWrite32(mAcpiBaseAddr + R_PCH_ACPI_GPE0a_STS, 0xffffffff);
-
- }
-
- //
- // Guarantee day-of-month alarm is invalid (ACPI 5.0 Section 4.8.2.4 "Real Time Clock Alarm")
- // Clear Status D reg VM bit, Date of month Alarm to make Data in CMOS RAM is no longer Valid
- //
- IoWrite8 (PCAT_RTC_ADDRESS_REGISTER, RTC_ADDRESS_REGISTER_D);
- IoWrite8 (PCAT_RTC_DATA_REGISTER, 0x0);
-
-
- RegData32 = IoRead32(ACPI_BASE_ADDRESS + R_PCH_ALT_GP_SMI_EN);
- RegData32 &= ~(BIT7);
- IoWrite32((ACPI_BASE_ADDRESS + R_PCH_ALT_GP_SMI_EN), RegData32);
-
-
- //
- // Enable SCI
- //
- Pm1Cnt = IoRead16(mAcpiBaseAddr + R_PCH_ACPI_PM1_CNT);
- Pm1Cnt |= B_PCH_ACPI_PM1_CNT_SCI_EN;
- IoWrite16(mAcpiBaseAddr + R_PCH_ACPI_PM1_CNT, Pm1Cnt);
-
-
-}
-
-/**
- SMI handler to disable ACPI mode
-
- Dispatched on reads from APM port with value 0xA1
-
- ACPI events are disabled and ACPI event status is cleared.
- SCI mode is then disabled.
- Clear all ACPI event status and disable all ACPI events
- Disable PM sources except power button
- Clear status bits
- Disable GPE0 sources
- Clear status bits
- Disable GPE1 sources
- Clear status bits
- Disable SCI
-
- @param DispatchHandle - EFI Handle
- @param DispatchContext - Pointer to the EFI_SMM_SW_DISPATCH_CONTEXT
-
- @retval Nothing
-
-**/
-VOID
-EFIAPI
-DisableAcpiCallback (
- IN EFI_HANDLE DispatchHandle,
- IN EFI_SMM_SW_DISPATCH_CONTEXT *DispatchContext
- )
-{
- UINT16 Pm1Cnt;
-
- IoWrite16(mAcpiBaseAddr + R_PCH_ACPI_PM1_STS, 0xffff);
- IoWrite16(mAcpiBaseAddr + R_PCH_ACPI_PM1_EN, mPM1_SaveState16);
-
- IoWrite32(mAcpiBaseAddr + R_PCH_ACPI_GPE0a_STS, 0xffffffff);
- IoWrite32(mAcpiBaseAddr + R_PCH_ACPI_GPE0a_EN, mGPE_SaveState32);
-
- //
- // Disable SCI
- //
- Pm1Cnt = IoRead16(mAcpiBaseAddr + R_PCH_ACPI_PM1_CNT);
- Pm1Cnt &= ~B_PCH_ACPI_PM1_CNT_SCI_EN;
- IoWrite16(mAcpiBaseAddr + R_PCH_ACPI_PM1_CNT, Pm1Cnt);
-
-}
-
-/**
- When an unknown event happen.
-
- @retval None
-
-**/
-VOID
-DummyTco1Callback (
- IN EFI_HANDLE DispatchHandle,
- IN EFI_SMM_ICHN_DISPATCH_CONTEXT *DispatchContext
- )
-{
-}
-
-UINTN
-DevicePathSize (
- IN EFI_DEVICE_PATH_PROTOCOL *DevicePath
- )
-{
- EFI_DEVICE_PATH_PROTOCOL *Start;
-
- if (DevicePath == NULL) {
- return 0;
- }
-
- //
- // Search for the end of the device path structure
- //
- Start = DevicePath;
- while (!IsDevicePathEnd (DevicePath)) {
- DevicePath = NextDevicePathNode (DevicePath);
- }
-
- //
- // Compute the size and add back in the size of the end device path structure
- //
- return ((UINTN)DevicePath - (UINTN)Start) + sizeof(EFI_DEVICE_PATH_PROTOCOL);
-}
-
-/**
-
- @param DispatchHandle The handle of this callback, obtained when registering
- @param DispatchContext The predefined context which contained sleep type and phase
-
-**/
-VOID
-S5SleepWakeOnRtcCallBack (
- IN EFI_HANDLE DispatchHandle,
- IN EFI_SMM_SX_DISPATCH_CONTEXT *DispatchContext
- )
-{
- EnableS5WakeOnRtc();
-}
-
-/**
-
- @retval 1. Check Alarm interrupt is not set.
- 2. Clear Alarm interrupt.
- 2. Set RTC wake up date and time.
- 2. Enable RTC wake up alarm.
- 3. Enable ICH PM1 EN Bit 10(RTC_EN)
-
-**/
-VOID
-EnableS5WakeOnRtc()
-{
- UINT8 CmosData;
- UINTN i;
- EFI_STATUS Status;
- UINTN VarSize;
-
- //
- // make sure EFI_SMM_VARIABLE_PROTOCOL is available
- //
- if (!mSmmVariable) {
- return;
- }
-
- VarSize = sizeof(SYSTEM_CONFIGURATION);
-
- //
- // read the variable into the buffer
- //
- Status = mSmmVariable->SmmGetVariable(
- L"Setup",
- &gEfiSetupVariableGuid,
- NULL,
- &VarSize,
- &mSystemConfiguration
- );
- if (EFI_ERROR(Status) || VarSize != sizeof(SYSTEM_CONFIGURATION)) {
- //The setup variable is corrupted
- VarSize = sizeof(SYSTEM_CONFIGURATION);
- Status = mSmmVariable->SmmGetVariable(
- L"SetupRecovery",
- &gEfiSetupVariableGuid,
- NULL,
- &VarSize,
- &mSystemConfiguration
- );
- ASSERT_EFI_ERROR (Status);
- }
-
- if (!mSystemConfiguration.WakeOnRtcS5) {
- return;
- }
- mWakeupDay = HexToBcd((UINT8)mSystemConfiguration.RTCWakeupDate);
- mWakeupHour = HexToBcd((UINT8)mSystemConfiguration.RTCWakeupTimeHour);
- mWakeupMinute = HexToBcd((UINT8)mSystemConfiguration.RTCWakeupTimeMinute);
- mWakeupSecond = HexToBcd((UINT8)mSystemConfiguration.RTCWakeupTimeSecond);
-
- //
- // Check RTC alarm interrupt is enabled. If enabled, someone already
- // grabbed RTC alarm. Just return.
- //
- IoWrite8(PCAT_RTC_ADDRESS_REGISTER, RTC_ADDRESS_REGISTER_B);
- if(IoRead8(PCAT_RTC_DATA_REGISTER) & B_RTC_ALARM_INT_ENABLE){
- return;
- }
-
- //
- // Set Date
- //
- IoWrite8(PCAT_RTC_ADDRESS_REGISTER, RTC_ADDRESS_REGISTER_D);
- CmosData = IoRead8(PCAT_RTC_DATA_REGISTER);
- CmosData &= ~(B_RTC_DATE_ALARM_MASK);
- CmosData |= mWakeupDay ;
- for(i = 0 ; i < 0xffff ; i++){
- IoWrite8(PCAT_RTC_DATA_REGISTER, CmosData);
- SmmStall(1);
- if(((CmosData = IoRead8(PCAT_RTC_DATA_REGISTER)) & B_RTC_DATE_ALARM_MASK)
- == mWakeupDay){
- break;
- }
- }
-
- //
- // Set Second
- //
- IoWrite8(PCAT_RTC_ADDRESS_REGISTER, RTC_ADDRESS_SECOND_ALARM);
- for(i = 0 ; i < 0xffff ; i++){
- IoWrite8(PCAT_RTC_DATA_REGISTER, mWakeupSecond);
- SmmStall(1);
- if(IoRead8(PCAT_RTC_DATA_REGISTER) == mWakeupSecond){
- break;
- }
- }
-
- //
- // Set Minute
- //
- IoWrite8(PCAT_RTC_ADDRESS_REGISTER, RTC_ADDRESS_MINUTE_ALARM);
- for(i = 0 ; i < 0xffff ; i++){
- IoWrite8(PCAT_RTC_DATA_REGISTER, mWakeupMinute);
- SmmStall(1);
- if(IoRead8(PCAT_RTC_DATA_REGISTER) == mWakeupMinute){
- break;
- }
- }
-
- //
- // Set Hour
- //
- IoWrite8(PCAT_RTC_ADDRESS_REGISTER, RTC_ADDRESS_HOUR_ALARM);
- for(i = 0 ; i < 0xffff ; i++){
- IoWrite8(PCAT_RTC_DATA_REGISTER, mWakeupHour);
- SmmStall(1);
- if(IoRead8(PCAT_RTC_DATA_REGISTER) == mWakeupHour){
- break;
- }
- }
-
- //
- // Wait for UIP to arm RTC alarm
- //
- IoWrite8(PCAT_RTC_ADDRESS_REGISTER, RTC_ADDRESS_REGISTER_A);
- while (IoRead8(PCAT_RTC_DATA_REGISTER) & 0x80);
-
- //
- // Read RTC register 0C to clear pending RTC interrupts
- //
- IoWrite8(PCAT_RTC_ADDRESS_REGISTER, RTC_ADDRESS_REGISTER_C);
- IoRead8(PCAT_RTC_DATA_REGISTER);
-
- //
- // Enable RTC Alarm Interrupt
- //
- IoWrite8(PCAT_RTC_ADDRESS_REGISTER, RTC_ADDRESS_REGISTER_B);
- IoWrite8(PCAT_RTC_DATA_REGISTER, IoRead8(PCAT_RTC_DATA_REGISTER) | B_RTC_ALARM_INT_ENABLE);
-
- //
- // Clear ICH RTC Status
- //
- IoWrite16(mAcpiBaseAddr + R_PCH_ACPI_PM1_STS, B_PCH_ACPI_PM1_STS_RTC);
-
- //
- // Enable ICH RTC event
- //
- IoWrite16(mAcpiBaseAddr + R_PCH_ACPI_PM1_EN,
- (UINT16)(IoRead16(mAcpiBaseAddr + R_PCH_ACPI_PM1_EN) | B_PCH_ACPI_PM1_EN_RTC));
-}
-
-UINT8
-HexToBcd(
- IN UINT8 HexValue
- )
-{
- UINTN HighByte;
- UINTN LowByte;
-
- HighByte = (UINTN)HexValue / 10;
- LowByte = (UINTN)HexValue % 10;
-
- return ((UINT8)(LowByte + (HighByte << 4)));
-}
-
-UINT8
-BcdToHex(
- IN UINT8 BcdValue
- )
-{
- UINTN HighByte;
- UINTN LowByte;
-
- HighByte = (UINTN)((BcdValue >> 4) * 10);
- LowByte = (UINTN)(BcdValue & 0x0F);
-
- return ((UINT8)(LowByte + HighByte));
-}
-
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