/** @file | |
Reset System Library functions for coreboot | |
Copyright (c) 2014 - 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 <PiDxe.h> | |
#include <Library/BaseLib.h> | |
#include <Library/DebugLib.h> | |
#include <Library/IoLib.h> | |
#include <Library/HobLib.h> | |
#include <Guid/AcpiBoardInfoGuid.h> | |
VOID | |
AcpiPmControl ( | |
UINTN SuspendType | |
) | |
{ | |
EFI_HOB_GUID_TYPE *GuidHob; | |
ACPI_BOARD_INFO *pAcpiBoardInfo; | |
UINTN PmCtrlReg = 0; | |
ASSERT (SuspendType <= 7); | |
// | |
// Find the acpi board information guid hob | |
// | |
GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid); | |
ASSERT (GuidHob != NULL); | |
pAcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob); | |
PmCtrlReg = (UINTN)pAcpiBoardInfo->PmCtrlRegBase; | |
IoAndThenOr16 (PmCtrlReg, (UINT16) ~0x3c00, (UINT16) (SuspendType << 10)); | |
IoOr16 (PmCtrlReg, 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 | |
) | |
{ | |
EFI_HOB_GUID_TYPE *GuidHob; | |
ACPI_BOARD_INFO *pAcpiBoardInfo; | |
// | |
// Find the acpi board information guid hob | |
// | |
GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid); | |
ASSERT (GuidHob != NULL); | |
pAcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob); | |
IoWrite8 ((UINTN)pAcpiBoardInfo->ResetRegAddress, pAcpiBoardInfo->ResetValue); | |
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 | |
) | |
{ | |
EFI_HOB_GUID_TYPE *GuidHob; | |
ACPI_BOARD_INFO *pAcpiBoardInfo; | |
// | |
// Find the acpi board information guid hob | |
// | |
GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid); | |
ASSERT (GuidHob != NULL); | |
pAcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob); | |
IoWrite8 ((UINTN)pAcpiBoardInfo->ResetRegAddress, pAcpiBoardInfo->ResetValue); | |
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 | |
) | |
{ | |
EFI_HOB_GUID_TYPE *GuidHob; | |
ACPI_BOARD_INFO *pAcpiBoardInfo; | |
UINTN PmCtrlReg; | |
// | |
// Find the acpi board information guid hob | |
// | |
GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid); | |
ASSERT (GuidHob != NULL); | |
pAcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob); | |
// | |
// GPE0_EN should be disabled to avoid any GPI waking up the system from S5 | |
// | |
IoWrite16 ((UINTN)pAcpiBoardInfo->PmGpeEnBase, 0); | |
// | |
// Clear Power Button Status | |
// | |
IoWrite16((UINTN) pAcpiBoardInfo->PmEvtBase, BIT8); | |
// | |
// Transform system into S5 sleep state | |
// | |
PmCtrlReg = (UINTN)pAcpiBoardInfo->PmCtrlRegBase; | |
IoAndThenOr16 (PmCtrlReg, (UINT16) ~0x3c00, (UINT16) (7 << 10)); | |
IoOr16 (PmCtrlReg, BIT13); | |
CpuDeadLoop (); | |
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 (5); | |
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 (); | |
} |