/** @file | |
Reset System Library functions for OVMF | |
Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR> | |
This program and the accompanying materials | |
are licensed and made available under the terms and conditions of the BSD License | |
which accompanies this distribution. The full text of the license may be found at | |
http://opensource.org/licenses/bsd-license.php | |
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
**/ | |
#include <Base.h> | |
#include <Library/BaseLib.h> | |
#include <Library/DebugLib.h> | |
#include <Library/IoLib.h> | |
#include <Library/TimerLib.h> | |
#include <OvmfPlatforms.h> | |
#include <OvmfPlatforms.h> | |
VOID | |
AcpiPmControl ( | |
UINTN SuspendType | |
) | |
{ | |
UINT16 AcpiPmBaseAddress; | |
UINT16 HostBridgeDevId; | |
ASSERT (SuspendType < 6); | |
AcpiPmBaseAddress = 0; | |
HostBridgeDevId = PciRead16 (OVMF_HOSTBRIDGE_DID); | |
switch (HostBridgeDevId) { | |
case INTEL_82441_DEVICE_ID: | |
AcpiPmBaseAddress = PIIX4_PMBA_VALUE; | |
break; | |
case INTEL_Q35_MCH_DEVICE_ID: | |
AcpiPmBaseAddress = ICH9_PMBASE_VALUE; | |
break; | |
default: | |
ASSERT (FALSE); | |
CpuDeadLoop (); | |
} | |
IoBitFieldWrite16 (AcpiPmBaseAddress + 4, 10, 13, (UINT16) SuspendType); | |
IoOr16 (AcpiPmBaseAddress + 4, BIT13); | |
CpuDeadLoop (); | |
} | |
/** | |
Calling this function causes a system-wide reset. This sets | |
all circuitry within the system to its initial state. This type of reset | |
is asynchronous to system operation and operates without regard to | |
cycle boundaries. | |
System reset should not return, if it returns, it means the system does | |
not support cold reset. | |
**/ | |
VOID | |
EFIAPI | |
ResetCold ( | |
VOID | |
) | |
{ | |
IoWrite8 (0xCF9, BIT2 | BIT1); // 1st choice: PIIX3 RCR, RCPU|SRST | |
MicroSecondDelay (50); | |
IoWrite8 (0x64, 0xfe); // 2nd choice: keyboard controller | |
CpuDeadLoop (); | |
} | |
/** | |
Calling this function causes a system-wide initialization. The processors | |
are set to their initial state, and pending cycles are not corrupted. | |
System reset should not return, if it returns, it means the system does | |
not support warm reset. | |
**/ | |
VOID | |
EFIAPI | |
ResetWarm ( | |
VOID | |
) | |
{ | |
IoWrite8 (0x64, 0xfe); | |
CpuDeadLoop (); | |
} | |
/** | |
Calling this function causes the system to enter a power state equivalent | |
to the ACPI G2/S5 or G3 states. | |
System shutdown should not return, if it returns, it means the system does | |
not support shut down reset. | |
**/ | |
VOID | |
EFIAPI | |
ResetShutdown ( | |
VOID | |
) | |
{ | |
AcpiPmControl (0); | |
ASSERT (FALSE); | |
} | |
/** | |
Calling this function causes the system to enter a power state for capsule | |
update. | |
Reset update should not return, if it returns, it means the system does | |
not support capsule update. | |
**/ | |
VOID | |
EFIAPI | |
EnterS3WithImmediateWake ( | |
VOID | |
) | |
{ | |
AcpiPmControl (1); | |
ASSERT (FALSE); | |
} | |
/** | |
This function causes a systemwide reset. The exact type of the reset is | |
defined by the EFI_GUID that follows the Null-terminated Unicode string passed | |
into ResetData. If the platform does not recognize the EFI_GUID in ResetData | |
the platform must pick a supported reset type to perform.The platform may | |
optionally log the parameters from any non-normal reset that occurs. | |
@param[in] DataSize The size, in bytes, of ResetData. | |
@param[in] ResetData The data buffer starts with a Null-terminated string, | |
followed by the EFI_GUID. | |
**/ | |
VOID | |
EFIAPI | |
ResetPlatformSpecific ( | |
IN UINTN DataSize, | |
IN VOID *ResetData | |
) | |
{ | |
ResetCold (); | |
} |