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/** @file
Implementation file for Heci Message functionality
@copyright
Copyright (c) 2010 - 2012 Intel Corporation. All rights
reserved This software and associated documentation (if any)
is furnished under a license and may only be used or copied in
accordance with the terms of the license. Except as permitted
by such license, no part of this software or documentation may
be reproduced, stored in a retrieval system, or transmitted in
any form or by any means without the express written consent
of Intel Corporation.
This file contains an 'Intel Peripheral Driver' and uniquely
identified as "Intel Reference Module" and is
licensed for Intel CPUs and chipsets under the terms of your
license agreement with Intel or your vendor. This file may
be modified by the user, subject to additional terms of the
license agreement
**/
//
// External include files do NOT need to be explicitly specified in real EDKII
// environment
//
#if !defined(EDK_RELEASE_VERSION) || (EDK_RELEASE_VERSION < 0x00020000)
#include "EdkIIGluePeim.h"
#include "CoreBiosMsg.h"
#include "HeciMsgLibPei.h"
#include EFI_PPI_CONSUMER (Wdt)
#endif
/**
Start Watch Dog Timer HECI message
@param[in] PeiServices General purpose services available to every PEIM.
@param[in] HeciPpi The pointer to HECI PPI
@param[in] HeciMemBar HECI Memory BAR
@param[in] WaitTimerBios The value of waiting limit
@exception EFI_UNSUPPORTED Current ME mode doesn't support this function
@retval EFI_SUCCESS Command succeeded
@retval EFI_DEVICE_ERROR HECI Device error, command aborts abnormally
@retval EFI_TIMEOUT HECI does not return the buffer before timeout
**/
EFI_STATUS
PeiHeciAsfStartWatchDog (
IN EFI_PEI_SERVICES **PeiServices,
IN PEI_HECI_PPI *HeciPpi,
IN UINT32 HeciMemBar,
IN UINT16 WaitTimerBios
)
{
EFI_STATUS Status;
ASF_START_WDT AsfStartWdt;
UINT32 HeciLength;
UINT32 MeMode;
Status = HeciPpi->GetMeMode (PeiServices, &MeMode);
if (EFI_ERROR (Status) || (MeMode != ME_MODE_NORMAL)) {
return EFI_UNSUPPORTED;
}
///
/// Clear Start Watch Dog Timer HECI message
///
ZeroMem ((VOID *) &AsfStartWdt, sizeof (ASF_START_WDT));
AsfStartWdt.Command = ASF_MANAGEMENT_CONTROL;
AsfStartWdt.ByteCount = START_WDT_BYTE_COUNT;
AsfStartWdt.SubCommand = ASF_SUB_COMMAND_START_WDT;
AsfStartWdt.VersionNumber = START_WDT_VERSION_NUMBER;
AsfStartWdt.TimeoutLow = (UINT8) WaitTimerBios;
AsfStartWdt.TimeoutHigh = (UINT8) (WaitTimerBios >> 8);
AsfStartWdt.EventSensorType = START_WDT_EVENT_SENSOR_TYPE;
AsfStartWdt.EventType = START_WDT_EVENT_TYPE;
AsfStartWdt.EventOffset = START_WDT_EVENT_OFFSET;
AsfStartWdt.EventSourceType = START_WDT_EVENT_SOURCE_TYPE_BIOS;
AsfStartWdt.EventSeverity = START_WDT_EVENT_SEVERITY;
AsfStartWdt.SensorDevice = START_WDT_SENSOR_DEVICE;
AsfStartWdt.SensorNumber = START_WDT_SENSOR_NUMBER;
AsfStartWdt.Entity = START_WDT_ENTITY;
AsfStartWdt.EntityInstance = START_WDT_ENTITY_INSTANCE;
AsfStartWdt.EventData[0] = START_WDT_EVENT_DATA_BYTE_0;
AsfStartWdt.EventData[1] = START_WDT_EVENT_DATA_BYTE_1_BIOS_TIMEOUT;
HeciLength = ASF_START_WDT_LENGTH;
Status = HeciPpi->SendMsg (
PeiServices,
HeciPpi,
(UINT32 *) &AsfStartWdt,
HeciMemBar,
HeciLength,
BIOS_FIXED_HOST_ADDR,
HECI_ASF_MESSAGE_ADDR
);
return Status;
}
/**
Send Core BIOS Reset Request Message through HECI to reset the system.
@param[in] PeiServices General purpose services available to every PEIM.
@param[in] ResetOrigin Reset source
@param[in] ResetType Global or Host reset
@retval EFI_SUCCESS Command succeeded
@retval EFI_DEVICE_ERROR HECI Device error, command aborts abnormally
@retval EFI_TIMEOUT HECI does not return the buffer before timeout
**/
EFI_STATUS
PeiHeciSendCbmResetRequest (
IN EFI_PEI_SERVICES **PeiServices,
IN UINT8 ResetOrigin,
IN UINT8 ResetType
)
{
EFI_STATUS Status;
PEI_HECI_PPI *HeciPpi;
CBM_RESET_REQ CbmResetRequest;
UINT32 HeciLength;
UINT32 HeciMemBar;
PLATFORM_ME_HOOK_PPI *PlatformMeHookPpi;
EFI_GUID WdtPpiGuid = WDT_PPI_GUID;
WDT_PPI *WdtPpi;
Status = PeiServicesLocatePpi (
&gPlatformMeHookPpiGuid, // GUID
0, // INSTANCE
NULL, // EFI_PEI_PPI_DESCRIPTOR
(VOID **) &PlatformMeHookPpi // PPI
);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "Unable to Locate PlatformMeHook Protocol for Global Reset Hook, so skip instead.", Status));
} else {
PlatformMeHookPpi->PreGlobalReset (PeiServices, PlatformMeHookPpi);
}
Status = PeiServicesLocatePpi (
&gPeiHeciPpiGuid, // GUID
0, // INSTANCE
NULL, // EFI_PEI_PPI_DESCRIPTOR
(VOID **) &HeciPpi // PPI
);
ASSERT_EFI_ERROR (Status);
Status = HeciPpi->InitializeHeci (PeiServices, HeciPpi, &HeciMemBar);
if (EFI_ERROR (Status)) {
return Status;
}
CbmResetRequest.MKHIHeader.Data = 0;
CbmResetRequest.MKHIHeader.Fields.Command = CBM_RESET_REQ_CMD;
CbmResetRequest.MKHIHeader.Fields.IsResponse = 0;
CbmResetRequest.MKHIHeader.Fields.GroupId = MKHI_CBM_GROUP_ID;
CbmResetRequest.MKHIHeader.Fields.Reserved = 0;
CbmResetRequest.MKHIHeader.Fields.Result = 0;
CbmResetRequest.Data.RequestOrigin = CBM_RR_REQ_ORIGIN_BIOS_MEMORY_INIT;
CbmResetRequest.Data.ResetType = CBM_HRR_GLOBAL_RESET;
HeciLength = sizeof (CBM_RESET_REQ);
Status = PeiServicesLocatePpi (
&WdtPpiGuid, // GUID
0, // INSTANCE
NULL, // EFI_PEI_PPI_DESCRIPTOR
(VOID **) &WdtPpi // PPI
);
ASSERT_EFI_ERROR (Status);
WdtPpi->AllowKnownReset ();
Status = HeciPpi->SendMsg (
PeiServices,
HeciPpi,
(UINT32 *) &CbmResetRequest,
HeciMemBar,
HeciLength,
BIOS_FIXED_HOST_ADDR,
HECI_CORE_MESSAGE_ADDR
);
return Status;
}
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