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| author | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-08-29 22:16:28 +0000 |
|---|---|---|
| committer | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-08-29 22:16:28 +0000 |
| commit | fe69ac847a984abf0307ae8706dcabbb928a5a48 (patch) | |
| tree | d9a5e6fd3d69991819a7a1fc48852ffdc6aeaa8d /MdePkg/Library/BaseS3StallLib | |
| parent | 8a96515e8852b9fd4180fc3fcfbbb72f0d93e031 (diff) | |
| download | edk2-fe69ac847a984abf0307ae8706dcabbb928a5a48.tar.gz edk2-fe69ac847a984abf0307ae8706dcabbb928a5a48.tar.bz2 edk2-fe69ac847a984abf0307ae8706dcabbb928a5a48.zip | |
MdePkg: Add S3 library interfaces and base implementations
Signed-off-by: jljusten
Reviewed-by: mdkinney
Reviewed-by: rsun3
Reviewed-by: jyao1
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12222 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseS3StallLib')
| -rw-r--r-- | MdePkg/Library/BaseS3StallLib/BaseS3StallLib.inf | 45 | ||||
| -rw-r--r-- | MdePkg/Library/BaseS3StallLib/S3StallLib.c | 52 |
2 files changed, 97 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseS3StallLib/BaseS3StallLib.inf b/MdePkg/Library/BaseS3StallLib/BaseS3StallLib.inf new file mode 100644 index 0000000000..7c9f16bffa --- /dev/null +++ b/MdePkg/Library/BaseS3StallLib/BaseS3StallLib.inf @@ -0,0 +1,45 @@ +## @file
+# Component description file for S3StallLib.
+#
+# Stall Services that do stall and also enable the Stall operatation
+# to be replayed during an S3 resume. This library class maps directly on top
+# of the Timer class.
+#
+# Copyright (c) 2007 - 2010, 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.
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = BaseS3StallLib
+ FILE_GUID = 498C6AC3-CC29-4821-BE6F-7C6F4ECF2C14
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = S3StallLib
+
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+# VALID_ARCHITECTURES = IA32 X64 IPF EBC
+#
+
+[Sources]
+ S3StallLib.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+
+[LibraryClasses]
+ DebugLib
+ TimerLib
+ S3BootScriptLib
+
diff --git a/MdePkg/Library/BaseS3StallLib/S3StallLib.c b/MdePkg/Library/BaseS3StallLib/S3StallLib.c new file mode 100644 index 0000000000..e5ebc874f5 --- /dev/null +++ b/MdePkg/Library/BaseS3StallLib/S3StallLib.c @@ -0,0 +1,52 @@ +/** @file
+ Stall Services that do stall and also enable the Stall operatation
+ to be replayed during an S3 resume. This library class maps directly on top
+ of the Timer class.
+
+ Copyright (c) 2007, 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/TimerLib.h>
+#include <Library/DebugLib.h>
+#include <Library/S3BootScriptLib.h>
+#include <Library/S3StallLib.h>
+
+
+/**
+ Stalls the CPU for at least the given number of microseconds and and saves
+ the value in the S3 script to be replayed on S3 resume.
+
+ Stalls the CPU for the number of microseconds specified by MicroSeconds.
+
+ @param MicroSeconds The minimum number of microseconds to delay.
+
+ @return MicroSeconds
+
+**/
+UINTN
+EFIAPI
+S3Stall (
+ IN UINTN MicroSeconds
+ )
+{
+ RETURN_STATUS Status;
+
+ Status = S3BootScriptSaveStall (MicroSecondDelay (MicroSeconds));
+ ASSERT (Status == RETURN_SUCCESS);
+
+ return MicroSeconds;
+}
+
+
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