mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-28 12:25:19 +01:00
88 lines
2.7 KiB
C
88 lines
2.7 KiB
C
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/** @file
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Timer booster
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Copyright (c) 2018, vit9696. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "AIT.h"
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#include <Library/DebugLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Protocol/Timer.h>
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STATIC UINTN mOriginalTimerPeriod;
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STATIC EFI_TIMER_ARCH_PROTOCOL *mTimerProtocol;
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EFI_STATUS
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AITInit (
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VOID
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)
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{
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EFI_STATUS Status;
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//
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// Refresh rate needs to be increased to poll mouse and keyboard frequently enough
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//
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Status = gBS->LocateProtocol (&gEfiTimerArchProtocolGuid, NULL, (VOID **)&mTimerProtocol);
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if (!EFI_ERROR (Status)) {
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Status = mTimerProtocol->GetTimerPeriod (mTimerProtocol, &mOriginalTimerPeriod);
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if (!EFI_ERROR (Status)) {
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DEBUG ((DEBUG_INFO, "AIFTimerBoostInit Current timer is %u\n", mOriginalTimerPeriod));
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if (mOriginalTimerPeriod > AIT_TIMER_PERIOD) {
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Status = mTimerProtocol->SetTimerPeriod (mTimerProtocol, AIT_TIMER_PERIOD);
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if (!EFI_ERROR (Status)) {
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DEBUG ((DEBUG_INFO, "AIFTimerBoostInit changed period %d to %d\n",
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mOriginalTimerPeriod, AIT_TIMER_PERIOD));
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} else {
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DEBUG ((DEBUG_INFO, "AIFTimerBoostInit failed to change period %d to %d, error - %r\n",
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mOriginalTimerPeriod, AIT_TIMER_PERIOD, Status));
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mTimerProtocol = NULL;
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}
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} else {
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mTimerProtocol = NULL;
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}
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} else {
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DEBUG ((DEBUG_INFO, "AIFTimerBoostInit failed to obtain previous period - %r\n", Status));
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}
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} else {
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DEBUG ((DEBUG_INFO, "AIFTimerBoostInit gEfiTimerArchProtocolGuid not found - %r\n", Status));
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}
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return Status;
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}
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EFI_STATUS
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AITExit (
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VOID
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)
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{
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EFI_STATUS Status;
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Status = EFI_SUCCESS;
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if (mTimerProtocol != NULL) {
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//
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// You are not allowed to call this on APTIO IV, as it results in an interrupt with 0x0 pointer
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// handler during XNU boot.
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//
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// Status = mTimerProtocol->SetTimerPeriod (mTimerProtocol, mOriginalTimerPeriod);
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// if (!EFI_ERROR (Status)) {
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// DEBUG ((DEBUG_INFO, "AmiShimTimerBoostExit changed period %d to %d\n",
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// AIT_TIMER_PERIOD, mOriginalTimerPeriod));
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// } else {
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// DEBUG ((DEBUG_INFO, "AmiShimTimerBoostExit failed to change period %d to %d, error - %r\n",
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// AIT_TIMER_PERIOD, mOriginalTimerPeriod, Status));
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// }
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mTimerProtocol = NULL;
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}
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return Status;
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}
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