244677494b
Fix reboot issue after issuing shell command "reset -s" from UEFI payload. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Guo Dong <guo.dong@intel.com> Reviewed-by: Maurice Ma <maurice.ma@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17715 6f19259b-4bc3-4df7-8a09-765794883524
164 lines
4.1 KiB
C
164 lines
4.1 KiB
C
/** @file
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Reset System Library functions for coreboot
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Copyright (c) 2014, Intel Corporation. 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 <PiDxe.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#include <Library/IoLib.h>
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#include <Library/HobLib.h>
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#include <Guid/AcpiBoardInfoGuid.h>
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VOID
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AcpiPmControl (
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UINTN SuspendType
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)
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{
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EFI_HOB_GUID_TYPE *GuidHob;
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ACPI_BOARD_INFO *pAcpiBoardInfo;
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UINTN PmCtrlReg = 0;
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ASSERT (SuspendType <= 7);
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//
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// Find the acpi board information guid hob
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//
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GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid);
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ASSERT (GuidHob != NULL);
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pAcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob);
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PmCtrlReg = (UINTN)pAcpiBoardInfo->PmCtrlRegBase;
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IoAndThenOr16 (PmCtrlReg, (UINT16) ~0x3c00, (UINT16) (SuspendType << 10));
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IoOr16 (PmCtrlReg, BIT13);
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CpuDeadLoop ();
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}
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/**
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Calling this function causes a system-wide reset. This sets
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all circuitry within the system to its initial state. This type of reset
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is asynchronous to system operation and operates without regard to
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cycle boundaries.
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System reset should not return, if it returns, it means the system does
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not support cold reset.
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**/
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VOID
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EFIAPI
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ResetCold (
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VOID
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)
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{
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EFI_HOB_GUID_TYPE *GuidHob;
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ACPI_BOARD_INFO *pAcpiBoardInfo;
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//
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// Find the acpi board information guid hob
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//
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GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid);
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ASSERT (GuidHob != NULL);
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pAcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob);
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IoWrite8 ((UINTN)pAcpiBoardInfo->ResetRegAddress, pAcpiBoardInfo->ResetValue);
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CpuDeadLoop ();
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}
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/**
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Calling this function causes a system-wide initialization. The processors
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are set to their initial state, and pending cycles are not corrupted.
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System reset should not return, if it returns, it means the system does
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not support warm reset.
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**/
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VOID
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EFIAPI
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ResetWarm (
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VOID
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)
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{
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EFI_HOB_GUID_TYPE *GuidHob;
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ACPI_BOARD_INFO *pAcpiBoardInfo;
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//
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// Find the acpi board information guid hob
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//
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GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid);
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ASSERT (GuidHob != NULL);
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pAcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob);
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IoWrite8 ((UINTN)pAcpiBoardInfo->ResetRegAddress, pAcpiBoardInfo->ResetValue);
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CpuDeadLoop ();
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}
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/**
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Calling this function causes the system to enter a power state equivalent
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to the ACPI G2/S5 or G3 states.
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System shutdown should not return, if it returns, it means the system does
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not support shut down reset.
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**/
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VOID
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EFIAPI
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ResetShutdown (
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VOID
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)
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{
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EFI_HOB_GUID_TYPE *GuidHob;
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ACPI_BOARD_INFO *pAcpiBoardInfo;
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UINTN PmCtrlReg;
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//
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// Find the acpi board information guid hob
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//
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GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid);
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ASSERT (GuidHob != NULL);
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pAcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob);
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//
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// GPE0_EN should be disabled to avoid any GPI waking up the system from S5
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//
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IoWrite16 ((UINTN)pAcpiBoardInfo->PmGpeEnBase, 0);
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//
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// Clear Power Button Status
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//
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IoWrite16((UINTN) pAcpiBoardInfo->PmEvtBase, BIT8);
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//
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// Transform system into S5 sleep state
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//
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PmCtrlReg = (UINTN)pAcpiBoardInfo->PmCtrlRegBase;
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IoAndThenOr16 (PmCtrlReg, (UINT16) ~0x3c00, (UINT16) (7 << 10));
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IoOr16 (PmCtrlReg, BIT13);
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CpuDeadLoop ();
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ASSERT (FALSE);
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}
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/**
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Calling this function causes the system to enter a power state for capsule
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update.
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Reset update should not return, if it returns, it means the system does
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not support capsule update.
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**/
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VOID
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EFIAPI
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EnterS3WithImmediateWake (
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VOID
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)
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{
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AcpiPmControl (5);
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ASSERT (FALSE);
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}
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