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/** @file
This module provides an implementation of the SMM Control PPI for use with
the QNC.
Copyright (c) 2013-2015 Intel Corporation.
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which 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 <PiPei.h>
#include <Ppi/SmmControl.h>
#include <Library/DebugLib.h>
#include <Library/HobLib.h>
#include <Library/PeiServicesLib.h>
#include <Library/PcdLib.h>
#include <Library/IoLib.h>
#include <Library/PciLib.h>
#include <IntelQNCPeim.h>
#include <Library/QNCAccessLib.h>
#include <Uefi/UefiBaseType.h>
/**
Generates an SMI using the parameters passed in.
@param PeiServices Describes the list of possible PEI Services.
@param This A pointer to an instance of
EFI_SMM_CONTROL_PPI
@param ArgumentBuffer The argument buffer
@param ArgumentBufferSize The size of the argument buffer
@param Periodic TRUE to indicate a periodical SMI
@param ActivationInterval Interval of the periodical SMI
@retval EFI_INVALID_PARAMETER Periodic is TRUE or ArgumentBufferSize > 1
@retval EFI_SUCCESS SMI generated
**/
EFI_STATUS
EFIAPI
PeiActivate (
IN EFI_PEI_SERVICES **PeiServices,
IN PEI_SMM_CONTROL_PPI *This,
IN OUT INT8 *ArgumentBuffer OPTIONAL,
IN OUT UINTN *ArgumentBufferSize OPTIONAL,
IN BOOLEAN Periodic OPTIONAL,
IN UINTN ActivationInterval OPTIONAL
);
/**
Clears an SMI.
@param PeiServices Describes the list of possible PEI Services.
@param This Pointer to an instance of EFI_SMM_CONTROL_PPI
@param Periodic TRUE to indicate a periodical SMI
@return Return value from SmmClear()
**/
EFI_STATUS
EFIAPI
PeiDeactivate (
IN EFI_PEI_SERVICES **PeiServices,
IN PEI_SMM_CONTROL_PPI *This,
IN BOOLEAN Periodic OPTIONAL
);
PEI_SMM_CONTROL_PPI mSmmControlPpi = {
PeiActivate,
PeiDeactivate
};
EFI_PEI_PPI_DESCRIPTOR mPpiList = {
(EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
&gPeiSmmControlPpiGuid,
&mSmmControlPpi
};
/**
Clear SMI related chipset status and re-enable SMI by setting the EOS bit.
@retval EFI_SUCCESS The requested operation has been carried out successfully
@retval EFI_DEVICE_ERROR The EOS bit could not be set.
**/
EFI_STATUS
SmmClear (
VOID
)
{
UINT16 PM1BLK_Base;
UINT16 GPE0BLK_Base;
//
// Get PM1BLK_Base & GPE0BLK_Base
//
PM1BLK_Base = PcdGet16 (PcdPm1blkIoBaseAddress);
GPE0BLK_Base = PcdGet16 (PcdGpe0blkIoBaseAddress);
//
// Clear the Power Button Override Status Bit, it gates EOS from being set.
// In QuarkNcSocId - Bit is read only. Handled by external SMC, do nothing.
//
//
// Clear the APM SMI Status Bit
//
IoWrite32 ((GPE0BLK_Base + R_QNC_GPE0BLK_SMIS), B_QNC_GPE0BLK_SMIS_APM);
//
// Set the EOS Bit
//
IoOr32 ((GPE0BLK_Base + R_QNC_GPE0BLK_SMIS), B_QNC_GPE0BLK_SMIS_EOS);
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
SmmTrigger (
IN UINT8 Data
)
/*++
Routine Description:
Trigger the software SMI
Arguments:
Data The value to be set on the software SMI data port
Returns:
EFI_SUCCESS Function completes successfully
--*/
{
UINT16 GPE0BLK_Base;
UINT32 NewValue;
//
// Get GPE0BLK_Base
//
GPE0BLK_Base = PcdGet16 (PcdGpe0blkIoBaseAddress);
//
// Enable the APMC SMI
//
IoOr32 (GPE0BLK_Base + R_QNC_GPE0BLK_SMIE, B_QNC_GPE0BLK_SMIE_APM);
//
// Enable SMI globally
//
NewValue = QNCPortRead (QUARK_NC_HOST_BRIDGE_SB_PORT_ID, QNC_MSG_FSBIC_REG_HMISC);
NewValue |= SMI_EN;
QNCPortWrite (QUARK_NC_HOST_BRIDGE_SB_PORT_ID, QNC_MSG_FSBIC_REG_HMISC, NewValue);
//
// Generate the APMC SMI
//
IoWrite8 (PcdGet16 (PcdSmmActivationPort), Data);
return EFI_SUCCESS;
}
/**
Generates an SMI using the parameters passed in.
@param PeiServices Describes the list of possible PEI Services.
@param This A pointer to an instance of
EFI_SMM_CONTROL_PPI
@param ArgumentBuffer The argument buffer
@param ArgumentBufferSize The size of the argument buffer
@param Periodic TRUE to indicate a periodical SMI
@param ActivationInterval Interval of the periodical SMI
@retval EFI_INVALID_PARAMETER Periodic is TRUE or ArgumentBufferSize > 1
@retval EFI_SUCCESS SMI generated
**/
EFI_STATUS
EFIAPI
PeiActivate (
IN EFI_PEI_SERVICES **PeiServices,
IN PEI_SMM_CONTROL_PPI *This,
IN OUT INT8 *ArgumentBuffer OPTIONAL,
IN OUT UINTN *ArgumentBufferSize OPTIONAL,
IN BOOLEAN Periodic OPTIONAL,
IN UINTN ActivationInterval OPTIONAL
)
{
INT8 Data;
EFI_STATUS Status;
//
// Periodic SMI not supported.
//
if (Periodic) {
DEBUG ((DEBUG_WARN, "Invalid parameter\n"));
return EFI_INVALID_PARAMETER;
}
if (ArgumentBuffer == NULL) {
Data = 0xFF;
} else {
if (ArgumentBufferSize == NULL || *ArgumentBufferSize != 1) {
return EFI_INVALID_PARAMETER;
}
Data = *ArgumentBuffer;
}
//
// Clear any pending the APM SMI
//
Status = SmmClear ();
if (EFI_ERROR (Status)) {
return Status;
}
return SmmTrigger (Data);
}
/**
Clears an SMI.
@param PeiServices Describes the list of possible PEI Services.
@param This Pointer to an instance of EFI_SMM_CONTROL_PPI
@param Periodic TRUE to indicate a periodical SMI
@return Return value from SmmClear()
**/
EFI_STATUS
EFIAPI
PeiDeactivate (
IN EFI_PEI_SERVICES **PeiServices,
IN PEI_SMM_CONTROL_PPI *This,
IN BOOLEAN Periodic OPTIONAL
)
{
if (Periodic) {
return EFI_INVALID_PARAMETER;
}
return SmmClear ();
}
/**
This is the constructor for the SMM Control Ppi.
This function installs EFI_SMM_CONTROL_PPI.
@param FileHandle Handle of the file being invoked.
@param PeiServices Describes the list of possible PEI Services.
@retval EFI_UNSUPPORTED There's no Intel ICH on this platform
@return The status returned from InstallPpi().
--*/
EFI_STATUS
EFIAPI
SmmControlPeiEntry (
IN EFI_PEI_FILE_HANDLE FileHandle,
IN CONST EFI_PEI_SERVICES **PeiServices
)
{
EFI_STATUS Status;
Status = (**PeiServices).InstallPpi (PeiServices, &mPpiList);
ASSERT_EFI_ERROR (Status);
return Status;
}
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