4631644890
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11276 6f19259b-4bc3-4df7-8a09-765794883524
102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
/** @file
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Reset System Library functions for OVMF
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Copyright (c) 2006 - 2011, 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 <Base.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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VOID
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AcpiPmControl (
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UINTN SuspendType
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)
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{
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ASSERT (SuspendType < 6);
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IoAndThenOr16 (0x404, (UINT16) ~0x3c00, (UINT16) (SuspendType << 10));
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IoOr16 (0x404, 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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IoWrite8 (0x64, 0xfe);
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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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IoWrite8 (0x64, 0xfe);
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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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AcpiPmControl (0);
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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 (1);
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ASSERT (FALSE);
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}
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