mirror of
https://github.com/acidanthera/OpenCorePkg.git
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107 lines
3.0 KiB
C
107 lines
3.0 KiB
C
/** @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 <Uefi.h>
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#include <Library/DebugLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiLib.h>
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#include <Protocol/Timer.h>
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STATIC UINT64 mOriginalTimerPeriod;
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STATIC EFI_TIMER_ARCH_PROTOCOL *mTimerProtocol;
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EFI_STATUS
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OcAppleGenericInputTimerQuirkInit (
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IN UINT32 TimerResolution
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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, "OCII: AIFTimerBoostInit Current timer is %u\n", mOriginalTimerPeriod));
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if (mOriginalTimerPeriod > TimerResolution) {
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Status = mTimerProtocol->SetTimerPeriod (mTimerProtocol, TimerResolution);
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if (!EFI_ERROR (Status)) {
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DEBUG ((
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DEBUG_INFO,
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"OCII: AIFTimerBoostInit changed period %d to %d\n",
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mOriginalTimerPeriod,
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TimerResolution
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));
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} else {
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DEBUG ((
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DEBUG_INFO,
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"OCII: AIFTimerBoostInit failed to change period %d to %d, error - %r\n",
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mOriginalTimerPeriod,
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TimerResolution,
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Status
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));
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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, "OCII: 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, "OCII: 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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OcAppleGenericInputTimerQuirkExit (
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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 after ExitBootServices (e.g. as an Event) on
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// APTIO IV, as it results in an interrupt with 0x0 pointer 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 ((
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DEBUG_INFO,
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"AmiShimTimerBoostExit changed current period to %Lu\n",
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mOriginalTimerPeriod
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));
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} else {
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DEBUG ((
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DEBUG_INFO,
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"AmiShimTimerBoostExit failed to change current period to %Lu, error - %r\n",
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mOriginalTimerPeriod,
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Status
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));
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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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