/** @file
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Reset scheduling library services
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Copyright (c) 2021, 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 <Library/DebugLib.h>
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#include <Library/ResetSystemLib.h>
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#include <Uefi/UefiBaseType.h>
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#include <Uefi.h>
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#include <Pi/PiMultiPhase.h>
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#include <Library/HobLib.h>
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#include <PchResetPlatformSpecific.h>
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#include <Library/SiScheduleResetLib.h>
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#include <SiScheduleResetHob.h>
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/**
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This function returns SiScheduleResetHob for library use
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**/
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STATIC
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SI_SCHEDULE_RESET_HOB *
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SiScheduleGetResetData (
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VOID
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)
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{
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STATIC SI_SCHEDULE_RESET_HOB *SiScheduleResetHob = NULL;
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SI_SCHEDULE_RESET_HOB *SiScheduleResetHobTemp;
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VOID *HobPtr;
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if (SiScheduleResetHob != NULL) {
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return SiScheduleResetHob;
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}
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HobPtr = GetFirstGuidHob (&gSiScheduleResetHobGuid);
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if (HobPtr == NULL) {
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SiScheduleResetHobTemp = BuildGuidHob (&gSiScheduleResetHobGuid, sizeof (SI_SCHEDULE_RESET_HOB));
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if (SiScheduleResetHobTemp == NULL) {
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ASSERT (FALSE);
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return SiScheduleResetHobTemp;
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}
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SiScheduleResetHobTemp->ResetType = 0xFF;
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DEBUG ((DEBUG_INFO, "SiScheduleResetSetType : Init SiScheduleResetHob\n"));
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} else {
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SiScheduleResetHobTemp = (SI_SCHEDULE_RESET_HOB*) GET_GUID_HOB_DATA (HobPtr);
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}
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SiScheduleResetHob = SiScheduleResetHobTemp;
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return SiScheduleResetHobTemp;
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}
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/**
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This function updates the reset information in SiScheduleResetHob
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@param[in] ResetType UEFI defined reset type.
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@param[in] ResetData Optional element used to introduce a platform specific reset.
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The exact type of the reset is defined by the EFI_GUID that follows
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the Null-terminated Unicode string.
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**/
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VOID
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SiScheduleResetSetType (
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IN EFI_RESET_TYPE ResetType,
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IN PCH_RESET_DATA *ResetData OPTIONAL
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)
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{
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SI_SCHEDULE_RESET_HOB *SiScheduleResetHob;
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if (ResetType > EfiResetPlatformSpecific) {
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DEBUG ((DEBUG_INFO, "Unsupported Reset Type Requested\n"));
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return;
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}
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SiScheduleResetHob = SiScheduleGetResetData ();
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if (SiScheduleResetHob == NULL) {
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return;
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}
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DEBUG ((DEBUG_INFO, "SiScheduleResetSetType : Current Reset Type = 0x%x\n", SiScheduleResetHob->ResetType));
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if (SiScheduleResetHob->ResetType == ResetType) {
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DEBUG ((DEBUG_INFO, "Current Reset Type is same as requested Reset Type\n"));
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return;
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}
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if (SiScheduleResetHob->ResetType == 0xFF) {
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// Init Reset Type to lowest ResetType
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SiScheduleResetHob->ResetType = EfiResetWarm;
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}
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//
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// ResetType Priority set as : ResetPlatformSpecific(3) > ResetShutdown(2) > ResetCold(0) > ResetWarm(1)
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//
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switch (ResetType) {
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case EfiResetWarm:
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break;
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case EfiResetCold:
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if (SiScheduleResetHob->ResetType == EfiResetWarm) {
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SiScheduleResetHob->ResetType = ResetType;
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}
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break;
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case EfiResetShutdown:
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if (SiScheduleResetHob->ResetType < ResetType)
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SiScheduleResetHob->ResetType = ResetType;
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break;
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case EfiResetPlatformSpecific:
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SiScheduleResetHob->ResetType = ResetType;
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SiScheduleResetHob->ResetData = *ResetData;
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break;
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}
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DEBUG ((DEBUG_INFO, "SiScheduleResetSetType : New Reset Type = 0x%x\n", SiScheduleResetHob->ResetType));
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}
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/**
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This function returns TRUE or FALSE depending on whether a reset is required based on SiScheduleResetHob
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@retval BOOLEAN The function returns FALSE if no reset is required
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**/
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BOOLEAN
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SiScheduleResetIsRequired (
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VOID
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)
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{
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VOID *HobPtr;
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HobPtr = NULL;
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HobPtr = GetFirstGuidHob (&gSiScheduleResetHobGuid);
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if (HobPtr == NULL) {
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return FALSE;
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}
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return TRUE;
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}
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/**
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This function performs reset based on SiScheduleResetHob
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@retval BOOLEAN The function returns FALSE if no reset is required
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**/
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BOOLEAN
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SiScheduleResetPerformReset (
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VOID
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)
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{
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UINTN DataSize;
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SI_SCHEDULE_RESET_HOB *SiScheduleResetHob;
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if (!SiScheduleResetIsRequired ()) {
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return FALSE;
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}
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SiScheduleResetHob = SiScheduleGetResetData ();
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if (SiScheduleResetHob == NULL) {
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return TRUE;
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}
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DEBUG ((DEBUG_INFO, "SiScheduleResetPerformReset : Reset Type = 0x%x\n", SiScheduleResetHob->ResetType));
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switch (SiScheduleResetHob->ResetType) {
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case EfiResetWarm:
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ResetWarm ();
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break;
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case EfiResetCold:
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ResetCold ();
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break;
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case EfiResetShutdown:
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ResetShutdown ();
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break;
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case EfiResetPlatformSpecific:
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DataSize = sizeof (PCH_RESET_DATA);
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ResetPlatformSpecific (DataSize, &SiScheduleResetHob->ResetData);
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break;
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}
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// Code should never reach here
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ASSERT (FALSE);
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return TRUE;
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}
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