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/** @file
PCH Smm Library Services that implements both S/W SMI generation and detection.
Copyright (c) 2007 - 2014, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "CommonHeader.h"
/**
Triggers a run time or boot time SMI.
This function triggers a software SMM interrupt and set the APMC status with an 8-bit Data.
@param Data The value to set the APMC status.
**/
VOID
InternalTriggerSmi (
IN UINT8 Data
)
{
ASSERT(FALSE);
}
/**
Triggers an SMI at boot time.
This function triggers a software SMM interrupt at boot time.
**/
VOID
EFIAPI
TriggerBootServiceSoftwareSmi (
VOID
)
{
ASSERT(FALSE);
}
/**
Triggers an SMI at run time.
This function triggers a software SMM interrupt at run time.
**/
VOID
EFIAPI
TriggerRuntimeSoftwareSmi (
VOID
)
{
ASSERT(FALSE);
}
/**
Gets the software SMI data.
This function tests if a software SMM interrupt happens. If a software SMI happens,
it retrieves the SMM data and returns it as a non-negative value; otherwise a negative
value is returned.
@return Data The data retrieved from SMM data port in case of a software SMI;
otherwise a negative value.
**/
INTN
InternalGetSwSmiData (
VOID
)
{
ASSERT(FALSE);
return -1;
}
/**
Test if a boot time software SMI happened.
This function tests if a software SMM interrupt happened. If a software SMM interrupt happened and
it was triggered at boot time, it returns TRUE. Otherwise, it returns FALSE.
@retval TRUE A software SMI triggered at boot time happened.
@retval FLASE No software SMI happened or the software SMI was triggered at run time.
**/
BOOLEAN
EFIAPI
IsBootServiceSoftwareSmi (
VOID
)
{
ASSERT(FALSE);
return FALSE;
}
/**
Test if a run time software SMI happened.
This function tests if a software SMM interrupt happened. If a software SMM interrupt happened and
it was triggered at run time, it returns TRUE. Otherwise, it returns FALSE.
@retval TRUE A software SMI triggered at run time happened.
@retval FLASE No software SMI happened or the software SMI was triggered at boot time.
**/
BOOLEAN
EFIAPI
IsRuntimeSoftwareSmi (
VOID
)
{
ASSERT(FALSE);
return FALSE;
}
/**
Clear APM SMI Status Bit; Set the EOS bit.
**/
VOID
EFIAPI
ClearSmi (
VOID
)
{
UINT16 PmBase;
//
// Get PMBase
//
PmBase = PcdGet16 (PcdPchAcpiIoPortBaseAddress);
//
// Clear the APM SMI Status Bit
//
IoWrite16 (PmBase + R_PCH_ACPI_SMI_STS, B_PCH_ACPI_APM_STS);
//
// Set the EOS Bit
//
IoOr32 (PmBase + R_PCH_ACPI_SMI_EN, B_PCH_ACPI_EOS);
}
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