REF:https://bugzilla.tianocore.org/show_bug.cgi?id=2082
Adds PCH SMM private library class instances.
* SmmPchPrivateLib
Cc: Sai Chaganty <rangasai.v.chaga...@intel.com>
Cc: Chasel Chiu <chasel.c...@intel.com>
Cc: Nate DeSimone <nathaniel.l.desim...@intel.com>
Cc: Liming Gao <liming....@intel.com>
Cc: Michael D Kinney <michael.d.kin...@intel.com>
Cc: Ankit Sinha <ankit.si...@intel.com>
Signed-off-by: Michael Kubacki <michael.a.kuba...@intel.com>
---
Silicon/Intel/CoffeelakeSiliconPkg/Pch/Library/Private/SmmPchPrivateLib/SmmPchPrivateLib.inf
| 32 +++++++++++
Silicon/Intel/CoffeelakeSiliconPkg/Pch/Library/Private/SmmPchPrivateLib/SmmPchPrivateLib.c
| 58 ++++++++++++++++++++
2 files changed, 90 insertions(+)
diff --git
a/Silicon/Intel/CoffeelakeSiliconPkg/Pch/Library/Private/SmmPchPrivateLib/SmmPchPrivateLib.inf
b/Silicon/Intel/CoffeelakeSiliconPkg/Pch/Library/Private/SmmPchPrivateLib/SmmPchPrivateLib.inf
new file mode 100644
index 0000000000..5cbad21fa5
--- /dev/null
+++
b/Silicon/Intel/CoffeelakeSiliconPkg/Pch/Library/Private/SmmPchPrivateLib/SmmPchPrivateLib.inf
@@ -0,0 +1,32 @@
+## @file
+# PCH SMM private lib.
+#
+# Copyright (c) 2019 Intel Corporation. All rights reserved. <BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+INF_VERSION = 0x00010017
+BASE_NAME = SmmPchPrivateLib
+FILE_GUID = FE6495FB-7AA9-4A24-BF3E-4698F7BCE0EE
+VERSION_STRING = 1.0
+MODULE_TYPE = DXE_SMM_DRIVER
+LIBRARY_CLASS = SmmPchPrivateLib
+
+
+[LibraryClasses]
+BaseLib
+IoLib
+DebugLib
+CpuPlatformLib
+
+
+[Packages]
+MdePkg/MdePkg.dec
+CoffeelakeSiliconPkg/SiPkg.dec
+
+
+[Sources]
+SmmPchPrivateLib.c
diff --git
a/Silicon/Intel/CoffeelakeSiliconPkg/Pch/Library/Private/SmmPchPrivateLib/SmmPchPrivateLib.c
b/Silicon/Intel/CoffeelakeSiliconPkg/Pch/Library/Private/SmmPchPrivateLib/SmmPchPrivateLib.c
new file mode 100644
index 0000000000..85a3086874
--- /dev/null
+++
b/Silicon/Intel/CoffeelakeSiliconPkg/Pch/Library/Private/SmmPchPrivateLib/SmmPchPrivateLib.c
@@ -0,0 +1,58 @@
+/** @file
+ PCH SMM private lib.
+
+ Copyright (c) 2019 Intel Corporation. All rights reserved. <BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include <Uefi/UefiBaseType.h>
+#include <Library/BaseLib.h>
+#include <Library/IoLib.h>
+#include <Library/DebugLib.h>
+#include <Library/CpuPlatformLib.h>
+#include <CpuRegs.h>
+
+/**
+ Set InSmm.Sts bit
+**/
+VOID
+PchSetInSmmSts (
+ VOID
+ )
+{
+ UINT32 Data32;
+
+ ///
+ /// Read memory location FED30880h OR with 00000001h, place the result in
EAX,
+ /// and write data to lower 32 bits of MSR 1FEh (sample code available)
+ ///
+ Data32 = MmioRead32 (0xFED30880);
+ AsmWriteMsr32 (MSR_SPCL_CHIPSET_USAGE_ADDR, Data32 | BIT0);
+ ///
+ /// Read FED30880h back to ensure the setting went through.
+ ///
+ Data32 = MmioRead32 (0xFED30880);
+}
+
+/**
+ Clear InSmm.Sts bit
+**/
+VOID
+PchClearInSmmSts (
+ VOID
+ )
+{
+ UINT32 Data32;
+
+ ///
+ /// Read memory location FED30880h AND with FFFFFFFEh, place the result in
EAX,
+ /// and write data to lower 32 bits of MSR 1FEh (sample code available)
+ ///
+ Data32 = MmioRead32 (0xFED30880);
+ AsmWriteMsr32 (MSR_SPCL_CHIPSET_USAGE_ADDR, Data32 & (UINT32) (~BIT0));
+ ///
+ /// Read FED30880h back to ensure the setting went through.
+ ///
+ Data32 = MmioRead32 (0xFED30880);
+}
--
2.16.2.windows.1
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