From 5f88a4463779054d48e5647c22bf0f64af9a6658 Mon Sep 17 00:00:00 2001
From: Jiaxin Wu <jiaxin.wu@intel.com>
Date: Wed, 26 Jun 2024 13:19:21 +0800
Subject: [PATCH] UefiCpuPkg/PiSmmCpuDxeSmm: Impl GetSmiCommandPort for MM

MM CPU can not call EfiLocateFirstAcpiTable to get the system
port address of the SMI Command Port. This patch just hard-code
to 0xB2 for MM CPU.

Signed-off-by: Jiaxin Wu <jiaxin.wu@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Dun Tan <dun.tan@intel.com>
Cc: Hongbin1 Zhang <hongbin1.zhang@intel.com>
Cc: Wei6 Xu <wei6.xu@intel.com>
Cc: Yuanhao Xie <yuanhao.xie@intel.com>
---
 UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuStandaloneMm.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuStandaloneMm.c b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuStandaloneMm.c
index 80ce1af4e6..c0378f5bd2 100644
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuStandaloneMm.c
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuStandaloneMm.c
@@ -9,6 +9,19 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 
 #include "PiSmmCpuCommon.h"
 
+/**
+  To get system port address of the SMI Command Port.
+
+**/
+VOID
+GetSmiCommandPort (
+  VOID
+  )
+{
+  mSmiCommandPort = 0xB2;
+  DEBUG ((DEBUG_INFO, "mSmiCommandPort = %x\n", mSmiCommandPort));
+}
+
 /**
   Get SmmCpuSyncConfig data: RelaxedMode, SyncTimeout, SyncTimeout2.