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| -rw-r--r-- | MdePkg/Include/Register/Amd/SevSnpMsr.h | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/MdePkg/Include/Register/Amd/SevSnpMsr.h b/MdePkg/Include/Register/Amd/SevSnpMsr.h new file mode 100644 index 0000000..1b8fbc1 --- /dev/null +++ b/MdePkg/Include/Register/Amd/SevSnpMsr.h @@ -0,0 +1,153 @@ +/** @file
+ MSR Definitions.
+
+ Provides defines for Machine Specific Registers(MSR) indexes. Data structures
+ are provided for MSRs that contain one or more bit fields. If the MSR value
+ returned is a single 32-bit or 64-bit value, then a data structure is not
+ provided for that MSR.
+
+ Copyright (c) 2017 - 2024, Advanced Micro Devices. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+ @par Specification Reference:
+ AMD64 Architecture Programming Manual volume 2, March 2024
+
+**/
+
+#ifndef SEV_SNP_MSR_H_
+#define SEV_SNP_MSR_H_
+
+/**
+ Secure Encrypted Virtualization - Encrypted State (SEV-ES) GHCB register
+
+**/
+#define MSR_SEV_ES_GHCB 0xc0010130
+
+/**
+ MSR information returned for #MSR_SEV_ES_GHCB
+**/
+typedef union {
+ struct {
+ UINT32 Function : 12;
+ UINT32 Reserved1 : 20;
+ UINT32 Reserved2 : 32;
+ } GhcbInfo;
+
+ struct {
+ UINT8 Reserved[3];
+ UINT8 SevEncryptionBitPos;
+ UINT16 SevEsProtocolMin;
+ UINT16 SevEsProtocolMax;
+ } GhcbProtocol;
+
+ struct {
+ UINT32 Function : 12;
+ UINT32 ReasonCodeSet : 4;
+ UINT32 ReasonCode : 8;
+ UINT32 Reserved1 : 8;
+ UINT32 Reserved2 : 32;
+ } GhcbTerminate;
+
+ struct {
+ UINT64 Function : 12;
+ UINT64 Features : 52;
+ } GhcbHypervisorFeatures;
+
+ struct {
+ UINT64 Function : 12;
+ UINT64 GuestFrameNumber : 52;
+ } GhcbGpaRegister;
+
+ struct {
+ UINT64 Function : 12;
+ UINT64 GuestFrameNumber : 40;
+ UINT64 Operation : 4;
+ UINT64 Reserved : 8;
+ } SnpPageStateChangeRequest;
+
+ struct {
+ UINT32 Function : 12;
+ UINT32 Reserved : 20;
+ UINT32 ErrorCode;
+ } SnpPageStateChangeResponse;
+
+ struct {
+ UINT64 Function : 12;
+ UINT64 Reserved1 : 20;
+ UINT64 Vmpl : 8;
+ UINT64 Reserved2 : 56;
+ } SnpVmplRequest;
+
+ struct {
+ UINT32 Function : 12;
+ UINT32 Reserved : 20;
+ UINT32 ErrorCode;
+ } SnpVmplResponse;
+
+ VOID *Ghcb;
+
+ UINT64 GhcbPhysicalAddress;
+
+ UINT64 Uint64;
+} MSR_SEV_ES_GHCB_REGISTER;
+
+#define GHCB_INFO_SEV_INFO 1
+#define GHCB_INFO_SEV_INFO_GET 2
+#define GHCB_INFO_CPUID_REQUEST 4
+#define GHCB_INFO_CPUID_RESPONSE 5
+#define GHCB_INFO_GHCB_GPA_REGISTER_REQUEST 18
+#define GHCB_INFO_GHCB_GPA_REGISTER_RESPONSE 19
+#define GHCB_INFO_SNP_PAGE_STATE_CHANGE_REQUEST 20
+#define GHCB_INFO_SNP_PAGE_STATE_CHANGE_RESPONSE 21
+#define GHCB_INFO_SNP_VMPL_REQUEST 22
+#define GHCB_INFO_SNP_VMPL_RESPONSE 23
+#define GHCB_HYPERVISOR_FEATURES_REQUEST 128
+#define GHCB_HYPERVISOR_FEATURES_RESPONSE 129
+#define GHCB_INFO_TERMINATE_REQUEST 256
+
+#define GHCB_TERMINATE_GHCB 0
+#define GHCB_TERMINATE_GHCB_GENERAL 0
+#define GHCB_TERMINATE_GHCB_PROTOCOL 1
+
+/**
+ Secure Encrypted Virtualization (SEV) status register
+
+**/
+#define MSR_SEV_STATUS 0xc0010131
+
+/**
+ MSR information returned for #MSR_SEV_STATUS
+**/
+typedef union {
+ ///
+ /// Individual bit fields
+ ///
+ struct {
+ ///
+ /// [Bit 0] Secure Encrypted Virtualization (Sev) is enabled
+ ///
+ UINT32 SevBit : 1;
+
+ ///
+ /// [Bit 1] Secure Encrypted Virtualization Encrypted State (SevEs) is enabled
+ ///
+ UINT32 SevEsBit : 1;
+
+ ///
+ /// [Bit 2] Secure Nested Paging (SevSnp) is enabled
+ ///
+ UINT32 SevSnpBit : 1;
+
+ UINT32 Reserved2 : 29;
+ } Bits;
+ ///
+ /// All bit fields as a 32-bit value
+ ///
+ UINT32 Uint32;
+ ///
+ /// All bit fields as a 64-bit value
+ ///
+ UINT64 Uint64;
+} MSR_SEV_STATUS_REGISTER;
+
+#endif
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