mirror of https://github.com/acidanthera/audk.git
163 lines
3.5 KiB
C
163 lines
3.5 KiB
C
/** @file
|
|
PCH Smm Library Services that implements both S/W SMI generation and detection.
|
|
|
|
Copyright (c) 2007 - 2014, 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 "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);
|
|
}
|
|
|