diff options
| author | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-01-13 05:46:52 +0000 |
|---|---|---|
| committer | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-01-13 05:46:52 +0000 |
| commit | 7ca30a6ac74e0e4435a5f3c94fb59e8d14d0594b (patch) | |
| tree | f0238ca61eccf661c467837f603b1db1c3c97479 /OvmfPkg/Library/ResetSystemLib/ResetSystemLib.c | |
| parent | c756b2ab80c2ec25462a3389e2e7a3b037a1add7 (diff) | |
| download | edk2-platforms-7ca30a6ac74e0e4435a5f3c94fb59e8d14d0594b.tar.xz | |
OvmfPkg ResetSystemLib: Add shutdown support for OVMF
This library will allow the UEFI RuntimeServices
ResetSystem call to function with OVMF.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11251 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'OvmfPkg/Library/ResetSystemLib/ResetSystemLib.c')
| -rw-r--r-- | OvmfPkg/Library/ResetSystemLib/ResetSystemLib.c | 101 |
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);
+}
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