/** @file
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This module provides an implementation of the SMM Control PPI for use with
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the QNC.
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Copyright (c) 2013-2015 Intel Corporation.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <PiPei.h>
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#include <Ppi/SmmControl.h>
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#include <Library/DebugLib.h>
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#include <Library/HobLib.h>
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#include <Library/PeiServicesLib.h>
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#include <Library/PcdLib.h>
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#include <Library/IoLib.h>
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#include <Library/PciLib.h>
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#include <IntelQNCPeim.h>
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#include <Library/QNCAccessLib.h>
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#include <Uefi/UefiBaseType.h>
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/**
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Generates an SMI using the parameters passed in.
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@param PeiServices Describes the list of possible PEI Services.
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@param This A pointer to an instance of
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EFI_SMM_CONTROL_PPI
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@param ArgumentBuffer The argument buffer
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@param ArgumentBufferSize The size of the argument buffer
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@param Periodic TRUE to indicate a periodical SMI
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@param ActivationInterval Interval of the periodical SMI
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@retval EFI_INVALID_PARAMETER Periodic is TRUE or ArgumentBufferSize > 1
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@retval EFI_SUCCESS SMI generated
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**/
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EFI_STATUS
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EFIAPI
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PeiActivate (
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IN EFI_PEI_SERVICES **PeiServices,
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IN PEI_SMM_CONTROL_PPI *This,
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IN OUT INT8 *ArgumentBuffer OPTIONAL,
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IN OUT UINTN *ArgumentBufferSize OPTIONAL,
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IN BOOLEAN Periodic OPTIONAL,
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IN UINTN ActivationInterval OPTIONAL
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);
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/**
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Clears an SMI.
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@param PeiServices Describes the list of possible PEI Services.
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@param This Pointer to an instance of EFI_SMM_CONTROL_PPI
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@param Periodic TRUE to indicate a periodical SMI
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@return Return value from SmmClear()
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**/
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EFI_STATUS
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EFIAPI
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PeiDeactivate (
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IN EFI_PEI_SERVICES **PeiServices,
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IN PEI_SMM_CONTROL_PPI *This,
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IN BOOLEAN Periodic OPTIONAL
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);
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PEI_SMM_CONTROL_PPI mSmmControlPpi = {
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PeiActivate,
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PeiDeactivate
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};
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EFI_PEI_PPI_DESCRIPTOR mPpiList = {
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(EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
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&gPeiSmmControlPpiGuid,
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&mSmmControlPpi
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};
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/**
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Clear SMI related chipset status and re-enable SMI by setting the EOS bit.
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@retval EFI_SUCCESS The requested operation has been carried out successfully
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@retval EFI_DEVICE_ERROR The EOS bit could not be set.
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**/
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EFI_STATUS
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SmmClear (
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VOID
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)
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{
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UINT16 GPE0BLK_Base;
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//
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// Get GPE0BLK_Base
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//
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GPE0BLK_Base = PcdGet16 (PcdGpe0blkIoBaseAddress);
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//
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// Clear the Power Button Override Status Bit, it gates EOS from being set.
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// In QuarkNcSocId - Bit is read only. Handled by external SMC, do nothing.
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//
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//
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// Clear the APM SMI Status Bit
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//
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IoWrite32 ((GPE0BLK_Base + R_QNC_GPE0BLK_SMIS), B_QNC_GPE0BLK_SMIS_APM);
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//
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// Set the EOS Bit
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//
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IoOr32 ((GPE0BLK_Base + R_QNC_GPE0BLK_SMIS), B_QNC_GPE0BLK_SMIS_EOS);
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return EFI_SUCCESS;
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}
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EFI_STATUS
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EFIAPI
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SmmTrigger (
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IN UINT8 Data
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)
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/*++
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Routine Description:
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Trigger the software SMI
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Arguments:
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Data The value to be set on the software SMI data port
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Returns:
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EFI_SUCCESS Function completes successfully
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--*/
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{
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UINT16 GPE0BLK_Base;
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UINT32 NewValue;
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//
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// Get GPE0BLK_Base
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//
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GPE0BLK_Base = PcdGet16 (PcdGpe0blkIoBaseAddress);
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//
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// Enable the APMC SMI
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//
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IoOr32 (GPE0BLK_Base + R_QNC_GPE0BLK_SMIE, B_QNC_GPE0BLK_SMIE_APM);
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//
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// Enable SMI globally
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//
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NewValue = QNCPortRead (QUARK_NC_HOST_BRIDGE_SB_PORT_ID, QNC_MSG_FSBIC_REG_HMISC);
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NewValue |= SMI_EN;
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QNCPortWrite (QUARK_NC_HOST_BRIDGE_SB_PORT_ID, QNC_MSG_FSBIC_REG_HMISC, NewValue);
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//
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// Generate the APMC SMI
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//
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IoWrite8 (PcdGet16 (PcdSmmActivationPort), Data);
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return EFI_SUCCESS;
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}
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/**
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Generates an SMI using the parameters passed in.
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@param PeiServices Describes the list of possible PEI Services.
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@param This A pointer to an instance of
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EFI_SMM_CONTROL_PPI
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@param ArgumentBuffer The argument buffer
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@param ArgumentBufferSize The size of the argument buffer
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@param Periodic TRUE to indicate a periodical SMI
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@param ActivationInterval Interval of the periodical SMI
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@retval EFI_INVALID_PARAMETER Periodic is TRUE or ArgumentBufferSize > 1
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@retval EFI_SUCCESS SMI generated
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**/
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EFI_STATUS
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EFIAPI
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PeiActivate (
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IN EFI_PEI_SERVICES **PeiServices,
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IN PEI_SMM_CONTROL_PPI *This,
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IN OUT INT8 *ArgumentBuffer OPTIONAL,
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IN OUT UINTN *ArgumentBufferSize OPTIONAL,
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IN BOOLEAN Periodic OPTIONAL,
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IN UINTN ActivationInterval OPTIONAL
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)
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{
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INT8 Data;
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EFI_STATUS Status;
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//
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// Periodic SMI not supported.
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//
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if (Periodic) {
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DEBUG ((DEBUG_WARN, "Invalid parameter\n"));
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return EFI_INVALID_PARAMETER;
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}
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if (ArgumentBuffer == NULL) {
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Data = 0xFF;
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} else {
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if (ArgumentBufferSize == NULL || *ArgumentBufferSize != 1) {
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return EFI_INVALID_PARAMETER;
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}
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Data = *ArgumentBuffer;
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}
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//
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// Clear any pending the APM SMI
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//
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Status = SmmClear ();
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if (EFI_ERROR (Status)) {
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return Status;
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}
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return SmmTrigger (Data);
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}
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/**
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Clears an SMI.
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@param PeiServices Describes the list of possible PEI Services.
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@param This Pointer to an instance of EFI_SMM_CONTROL_PPI
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@param Periodic TRUE to indicate a periodical SMI
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@return Return value from SmmClear()
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**/
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EFI_STATUS
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EFIAPI
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PeiDeactivate (
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IN EFI_PEI_SERVICES **PeiServices,
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IN PEI_SMM_CONTROL_PPI *This,
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IN BOOLEAN Periodic OPTIONAL
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)
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{
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if (Periodic) {
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return EFI_INVALID_PARAMETER;
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}
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return SmmClear ();
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}
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/**
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This is the constructor for the SMM Control Ppi.
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This function installs EFI_SMM_CONTROL_PPI.
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@param FileHandle Handle of the file being invoked.
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@param PeiServices Describes the list of possible PEI Services.
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@retval EFI_UNSUPPORTED There's no Intel ICH on this platform
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@return The status returned from InstallPpi().
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--*/
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EFI_STATUS
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EFIAPI
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SmmControlPeiEntry (
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IN EFI_PEI_FILE_HANDLE FileHandle,
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IN CONST EFI_PEI_SERVICES **PeiServices
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)
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{
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EFI_STATUS Status;
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Status = (**PeiServices).InstallPpi (PeiServices, &mPpiList);
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ASSERT_EFI_ERROR (Status);
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return Status;
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}
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