From 3814d97a34cc21d35816cefe37f1b4626b4e2116 Mon Sep 17 00:00:00 2001
From: Guo Mang <mang.guo@intel.com>
Date: Fri, 14 Apr 2017 12:54:43 +0800
Subject: Fix issue in PlatformSMM

Change code to set R_SMI_EN earlier in S3 boot path to make sure all SMI were detected.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Guo Mang <mang.guo@intel.com>
Reviewed-by: zwei4 <david.wei@intel.com>
---
 Platform/BroxtonPlatformPkg/Common/PlatformSmm/Platform.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

(limited to 'Platform/BroxtonPlatformPkg/Common/PlatformSmm/Platform.c')

diff --git a/Platform/BroxtonPlatformPkg/Common/PlatformSmm/Platform.c b/Platform/BroxtonPlatformPkg/Common/PlatformSmm/Platform.c
index 673df3aedd..e0c6c7138f 100644
--- a/Platform/BroxtonPlatformPkg/Common/PlatformSmm/Platform.c
+++ b/Platform/BroxtonPlatformPkg/Common/PlatformSmm/Platform.c
@@ -1,7 +1,7 @@
 /** @file
   This is a generic template for a child of the IchSmm driver.
 
-  Copyright (c) 1999 - 2016, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 1999 - 2017, Intel Corporation. All rights reserved.<BR>
 
   This program and the accompanying materials
   are licensed and made available under the terms and conditions of the BSD License
@@ -142,6 +142,7 @@ InitializePlatformSmm (
   EFI_SMM_SW_REGISTER_CONTEXT               SwContext;
   UINTN                                     VarSize;
   EFI_BOOT_MODE                             BootMode;
+  UINT32                                    Data32;
   Handle = NULL;
 
   //
@@ -315,6 +316,16 @@ InitializePlatformSmm (
 
   ASSERT_EFI_ERROR (Status);
 
+  
+  Data32 = IoRead32 (mAcpiBaseAddr + R_SMI_EN);
+  S3BootScriptSaveIoWrite (
+    S3BootScriptWidthUint32,
+    (mAcpiBaseAddr + R_SMI_EN),
+    1,
+    &Data32
+    );
+  
+  
   //
   // Get the ICHn protocol
   //
-- 
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