BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=2198
The GHCB is used by an SEV-ES guest for communicating between the guest
and the hypervisor. Create the GHCB definition as defined by the GHCB
protocol definition.
Cc: Michael D Kinney <michael.d.kin...@intel.com>
Cc: Liming Gao <liming....@intel.com>
Signed-off-by: Tom Lendacky <thomas.lenda...@amd.com>
---
MdePkg/Include/Register/Amd/Ghcb.h | 136 +++++++++++++++++++++++++++++
1 file changed, 136 insertions(+)
create mode 100644 MdePkg/Include/Register/Amd/Ghcb.h
diff --git a/MdePkg/Include/Register/Amd/Ghcb.h
b/MdePkg/Include/Register/Amd/Ghcb.h
new file mode 100644
index 000000000000..ffad7efd82d9
--- /dev/null
+++ b/MdePkg/Include/Register/Amd/Ghcb.h
@@ -0,0 +1,136 @@
+/** @file
+ Guest-Hypervisor Communication Block (GHCB) Definition.
+
+ Provides data types allowing an SEV-ES guest to interact with the hypervisor
+ using the GHCB protocol.
+
+ Copyright (c) 2020, Advanced Micro Devices, Inc. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+ @par Specification Reference:
+ SEV-ES Guest-Hypervisor Communication Block Standardization
+
+**/
+
+#ifndef __GHCB_H__
+#define __GHCB_H__
+
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+
+#define UD_EXCEPTION 6
+#define GP_EXCEPTION 13
+
+#define GHCB_VERSION_MIN 1
+#define GHCB_VERSION_MAX 1
+
+#define GHCB_STANDARD_USAGE 0
+
+typedef enum {
+ SvmExitDr7Read = 0x27,
+ SvmExitDr7Write = 0x37,
+ SvmExitRdtsc = 0x6E,
+ SvmExitRdpmc,
+ SvmExitCpuid = 0x72,
+ SvmExitInvd = 0x76,
+ SvmExitIoioProt = 0x7B,
+ SvmExitMsr,
+ SvmExitVmmCall = 0x81,
+ SvmExitRdtscp = 0x87,
+ SvmExitWbinvd = 0x89,
+ SvmExitMonitor,
+ SvmExitMwait,
+ SvmExitNpf = 0x400,
+
+ // VMG special exits
+ SvmExitMmioRead = 0x80000001,
+ SvmExitMmioWrite,
+ SvmExitNmiComplete,
+ SvmExitApResetHold,
+ SvmExitApJumpTable,
+
+ SvmExitUnsupported = 0x8000FFFF,
+} SVM_EXITCODE;
+
+typedef enum {
+ GhcbCpl = 25,
+ GhcbRflags = 46,
+ GhcbRip,
+ GhcbRsp = 59,
+ GhcbRax = 63,
+ GhcbRcx = 97,
+ GhcbRdx,
+ GhcbRbx,
+ GhcbRbp = 101,
+ GhcbRsi,
+ GhcbRdi,
+ GhcbR8,
+ GhcbR9,
+ GhcbR10,
+ GhcbR11,
+ GhcbR12,
+ GhcbR13,
+ GhcbR14,
+ GhcbR15,
+ GhcbXCr0 = 125,
+} GHCB_REGISTER;
+
+typedef struct {
+ UINT8 Reserved1[203];
+ UINT8 Cpl;
+ UINT8 Reserved2[148];
+ UINT64 Dr7;
+ UINT8 Reserved3[144];
+ UINT64 Rax;
+ UINT8 Reserved4[264];
+ UINT64 Rcx;
+ UINT64 Rdx;
+ UINT64 Rbx;
+ UINT8 Reserved5[112];
+ UINT64 SwExitCode;
+ UINT64 SwExitInfo1;
+ UINT64 SwExitInfo2;
+ UINT64 SwScratch;
+ UINT8 Reserved6[56];
+ UINT64 XCr0;
+ UINT8 ValidBitmap[16];
+ UINT64 X87StateGpa;
+ UINT8 Reserved7[1016];
+} __attribute__ ((__packed__)) GHCB_SAVE_AREA;
+
+typedef struct {
+ GHCB_SAVE_AREA SaveArea;
+ UINT8 SharedBuffer[2032];
+ UINT8 Reserved1[10];
+ UINT16 ProtocolVersion;
+ UINT32 GhcbUsage;
+} __attribute__ ((__packed__)) __attribute__ ((aligned(SIZE_4KB))) GHCB;
+
+typedef union {
+ struct {
+ UINT32 Lower32Bits;
+ UINT32 Upper32Bits;
+ } Elements;
+
+ UINT64 Uint64;
+} GHCB_EXIT_INFO;
+
+typedef union {
+ struct {
+ UINT32 Vector:8;
+ UINT32 Type:3;
+ UINT32 ErrorCodeValid:1;
+ UINT32 Rsvd:19;
+ UINT32 Valid:1;
+ UINT32 ErrorCode;
+ } Elements;
+
+ UINT64 Uint64;
+} GHCB_EVENT_INJECTION;
+
+#define GHCB_EVENT_INJECTION_TYPE_INT 0
+#define GHCB_EVENT_INJECTION_TYPE_NMI 2
+#define GHCB_EVENT_INJECTION_TYPE_EXCEPTION 3
+#define GHCB_EVENT_INJECTION_TYPE_SOFT_INT 4
+
+#endif
--
2.17.1
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#55243): https://edk2.groups.io/g/devel/message/55243
Mute This Topic: https://groups.io/mt/71687791/21656
Group Owner: devel+ow...@edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com]
-=-=-=-=-=-=-=-=-=-=-=-
