From 352eabdcd52959b0dc24631699783e09321d7d31 Mon Sep 17 00:00:00 2001
From: Min Xu <min.m.xu@intel.com>
Date: Fri, 16 Jul 2021 16:14:09 +0800
Subject: [PATCH] OvmfPkg: Add IntelTdx.h in OvmfPkg/Include/IndustryStandard

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429

IntelTdx.h defines the defition used by TDX in OvmfPkg:
 - Mailbox related defitions,such as the data structure, command code,
   AP relocation defitions.

See Table 5.44 Multiprocessor Wakeup Mailbox Structure in below link.
https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/
ACPI_Software_Programming_Model.html#multiprocessor-wakeup-structure

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
---
 OvmfPkg/Include/IndustryStandard/IntelTdx.h | 67 +++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 OvmfPkg/Include/IndustryStandard/IntelTdx.h

diff --git a/OvmfPkg/Include/IndustryStandard/IntelTdx.h b/OvmfPkg/Include/IndustryStandard/IntelTdx.h
new file mode 100644
index 0000000000..cc849be2fb
--- /dev/null
+++ b/OvmfPkg/Include/IndustryStandard/IntelTdx.h
@@ -0,0 +1,67 @@
+/** @file
+  Defines the defitions used by TDX in OvmfPkg.
+
+  Copyright (c) 2020 - 2021, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef OVMF_INTEL_TDX_H_
+#define OVMF_INTEL_TDX_H_
+
+#include <PiPei.h>
+#include <Library/BaseLib.h>
+#include <Uefi/UefiSpec.h>
+#include <Uefi/UefiBaseType.h>
+
+#define MP_CPU_PROTECTED_MODE_MAILBOX_APICID_INVALID    0xFFFFFFFF
+#define MP_CPU_PROTECTED_MODE_MAILBOX_APICID_BROADCAST  0xFFFFFFFE
+
+typedef enum {
+  MpProtectedModeWakeupCommandNoop        = 0,
+  MpProtectedModeWakeupCommandWakeup      = 1,
+  MpProtectedModeWakeupCommandSleep       = 2,
+  MpProtectedModeWakeupCommandAcceptPages = 3,
+} MP_CPU_PROTECTED_MODE_WAKEUP_CMD;
+
+#pragma pack(1)
+
+//
+// Describes the CPU MAILBOX control structure use to
+// wakeup cpus spinning in long mode
+//
+typedef struct {
+  UINT16    Command;
+  UINT16    Resv;
+  UINT32    ApicId;
+  UINT64    WakeUpVector;
+  UINT8     ResvForOs[2032];
+  //
+  // Arguments available for wakeup code
+  //
+  UINT64    WakeUpArgs1;
+  UINT64    WakeUpArgs2;
+  UINT64    WakeUpArgs3;
+  UINT64    WakeUpArgs4;
+  UINT8     Pad1[0xe0];
+  UINT64    NumCpusArriving;
+  UINT8     Pad2[0xf8];
+  UINT64    NumCpusExiting;
+  UINT32    Tallies[256];
+  UINT8     Errors[256];
+  UINT8     Pad3[0xf8];
+} MP_WAKEUP_MAILBOX;
+
+//
+// AP relocation code information including code address and size,
+// this structure will be shared be C code and assembly code.
+// It is natural aligned by design.
+//
+typedef struct {
+  UINT8    *RelocateApLoopFuncAddress;
+  UINTN    RelocateApLoopFuncSize;
+} MP_RELOCATION_MAP;
+
+#pragma pack()
+
+#endif