79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
/** @file
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Provide hook function for OEM to detect EC Present.
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;******************************************************************************
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;* Copyright (c) 2014 - 2015, Insyde Software Corporation. All Rights Reserved.
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;*
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;* You may not reproduce, distribute, publish, display, perform, modify, adapt,
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;* transmit, broadcast, present, recite, release, license or otherwise exploit
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;* any part of this publication in any form, by any means, without the prior
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;* written permission of Insyde Software Corporation.
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;*
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;******************************************************************************
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*/
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#include <Library/BaseOemSvcChipsetLib.h>
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#include <Library/EcLib.h>
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#include <Library/EcMiscLib.h>
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#include <Library/TimerLib.h>
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#define STALL_TIME 1000000 // 1,000,000 microseconds = 1 second
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/**
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Detect EC Present.
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@param[out] *CommandStatus Command status.
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@param[out] Present TRUE: EC is presnet; FALSE: EC is absent.
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@retval EFI_UNSUPPORTED Returns unsupported by default.
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@retval EFI_MEDIA_CHANGED Alter the Configuration Parameter.
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@retval EFI_SUCCESS The function performs the same operation as caller.
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The caller will skip the specified behavior and assuming
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that it has been handled completely by this function.
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*/
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EFI_STATUS
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OemSvcEcDetectEcPresent (
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OUT EFI_STATUS *CommandStatus,
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OUT BOOLEAN *Present
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)
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{
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/*++
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Todo:
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Add project specific code in here.
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--*/
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//[-start-210519-KEBIN00001-modify]//
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#ifdef LCFC_SUPPORT
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*CommandStatus = EFI_UNSUPPORTED;
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*Present = FALSE;
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return EFI_UNSUPPORTED;
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#else
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RETURN_STATUS Status;
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UINT8 Retry;
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UINT8 DataBuffer[2];
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//
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// Detect EC Revision
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//
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Retry = 5;
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do {
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Status = DetectEcRevision ((UINT8 *)DataBuffer);
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Retry--;
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if ((RETURN_ERROR (Status)) && (Retry != 0)) {
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MicroSecondDelay (STALL_TIME);
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}
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} while ((RETURN_ERROR (Status)) && (Retry != 0));
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if (RETURN_ERROR (Status)) {
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*Present = FALSE;
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} else {
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*Present = TRUE;
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}
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*CommandStatus = Status;
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return EFI_MEDIA_CHANGED;
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#endif
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//[-start-210519-KEBIN00001-modify]//
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}
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