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