1 files changed, 101 insertions, 0 deletions
diff --git a/OvmfPkg/Library/ResetSystemLib/ResetSystemLib.c b/OvmfPkg/Library/ResetSystemLib/ResetSystemLib.c
new file mode 100644
index 0000000000..d9de12e873
--- /dev/null
+++ b/OvmfPkg/Library/ResetSystemLib/ResetSystemLib.c
@@ -0,0 +1,101 @@
+/** @file
+  Reset System Library functions for OVMF
+
+  Copyright (c) 2006 - 2011, 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>
+
+VOID
+AcpiPmControl (
+  UINTN SuspendType
+  )
+{
+  ASSERT (SuspendType < 6);
+
+  IoAndThenOr16 (0x404, ~0x3c00, SuspendType << 10);
+  IoOr16 (0x404, 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 (0x64, 0xfe);
+}
+
+/**
+  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);
+}
+
+/**
+  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);
+}