From 961a9e1d76cdb3a56ac2eecc480492c18c1ab927 Mon Sep 17 00:00:00 2001
From: Kun Qin <kuqin@microsoft.com>
Date: Fri, 20 Aug 2021 20:49:04 +0000
Subject: MdePkg: Added definition of AMD specific public MSRs

Added definition of AMD specific public MSRs:
1. SMBASE
2. SMM_ADDR
3. SMM_MASK

Signed-off-by: Kun Qin <kuqin@microsoft.com>
---
 MdePkg/Include/Register/Amd/ArchitecturalMsr.h | 55 ++++++++++++++++++++++++++
 MdePkg/Include/Register/Amd/Msr.h              |  1 +
 2 files changed, 56 insertions(+)
 create mode 100644 MdePkg/Include/Register/Amd/ArchitecturalMsr.h

(limited to 'MdePkg')

diff --git a/MdePkg/Include/Register/Amd/ArchitecturalMsr.h b/MdePkg/Include/Register/Amd/ArchitecturalMsr.h
new file mode 100644
index 0000000000..369009f9db
--- /dev/null
+++ b/MdePkg/Include/Register/Amd/ArchitecturalMsr.h
@@ -0,0 +1,55 @@
+/** @file ArchitecturalMsr.h
+  AMD Architectural MSR Definitions.
+
+  Provides defines for Machine Specific Registers(MSR) indexes.
+
+  Copyright (c) Microsoft Corporation.
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+  @par Specification Reference:
+  AMD64 Architecture Programmer’s Manual, Volumes 2
+  Rev. 3.37, Volume 2: System Programming
+
+**/
+
+#ifndef AMD_ARCHITECTURAL_MSR_H_
+#define AMD_ARCHITECTURAL_MSR_H_
+
+/*
+  See Appendix A.8, "System Management Mode MSR Cross-Reference".
+
+  SMBASE MSR that contains the SMRAM base address.
+  Reset value: 0000_0000_0003_0000h
+
+*/
+#define AMD_64_SMM_BASE  0xC0010111
+
+/*
+  See Appendix A.8, "System Management Mode MSR Cross-Reference".
+
+  SMM_ADDR Contains the base address of protected
+  memory for the SMM Handler.
+
+  Specific usage, see AMD64 Architecture Programmer’s Manual,
+  Volumes 2 (Rev. 3.37), Section 10.2.5
+
+  Reset value: 0000_0000_0000_0000h
+
+*/
+#define AMD_64_SMM_ADDR  0xC0010112
+
+/*
+  See Appendix A.8, "System Management Mode MSR Cross-Reference".
+
+  SMM_MASK Contains a mask which determines the size of
+  the protected area for the SMM handler.
+
+  Specific usage, see AMD64 Architecture Programmer’s Manual,
+  Volumes 2 (Rev. 3.37), Section 10.2.5
+
+  Reset value: 0000_0000_0000_0000h
+
+*/
+#define AMD_64_SMM_MASK  0xC0010113
+
+#endif // AMD_ARCHITECTURAL_MSR_H_
diff --git a/MdePkg/Include/Register/Amd/Msr.h b/MdePkg/Include/Register/Amd/Msr.h
index 352b1f8f1c..7ec208c769 100644
--- a/MdePkg/Include/Register/Amd/Msr.h
+++ b/MdePkg/Include/Register/Amd/Msr.h
@@ -18,6 +18,7 @@
 #define AMD_MSR_H_
 
 #include <Register/Intel/ArchitecturalMsr.h>
+#include <Register/Amd/ArchitecturalMsr.h>
 #include <Register/Amd/SevSnpMsr.h>
 #include <Register/Amd/SvsmMsr.h>
 
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