From 4be1fbc287a2972a0cb420bc3a85372426c588b5 Mon Sep 17 00:00:00 2001
From: Michael Kinney <michael.d.kinney@intel.com>
Date: Tue, 17 May 2016 11:15:54 -0700
Subject: QuarkSocPkg/SmmCpuFeaturesLib: Add SMRR PhysBase/PhysMask fields
 check

SMRR range size and alignment should follow the rules like MTRR:
a. The minimum range size is 4 KBytes and the base address of the
   range must be on at least a 4-KByte boundary.
b. For ranges greater than 4 KBytes, each range must be of length
   2^n and its base address must be aligned on a 2^n boundary, where
   n is a value equal to or greater than 12. The base-address
   alignment value cannot be less than its length.
Thus, it could meet "Address_Within_Range AND PhysMask = PhysBase
AND PhysMask".

Cc: Jeff Fan <jeff.fan@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
---
 .../Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c        | 16 +++++++++++++++-
 .../Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.inf      |  4 +++-
 2 files changed, 18 insertions(+), 2 deletions(-)

(limited to 'QuarkSocPkg')

diff --git a/QuarkSocPkg/QuarkNorthCluster/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c b/QuarkSocPkg/QuarkNorthCluster/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c
index 6c46645531..54eeac6d19 100644
--- a/QuarkSocPkg/QuarkNorthCluster/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c
+++ b/QuarkSocPkg/QuarkNorthCluster/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c
@@ -1,7 +1,7 @@
 /** @file
 The Quark CPU specific programming for PiSmmCpuDxeSmm module.
 
-Copyright (c) 2010 - 2015, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2010 - 2016, 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
 which accompanies this distribution.  The full text of the license may be found at
@@ -15,6 +15,8 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <PiSmm.h>
 #include <Library/SmmCpuFeaturesLib.h>
 #include <Register/SmramSaveStateMap.h>
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
 #include <Library/QNCAccessLib.h>
 
 #define  EFI_MSR_SMRR_PHYS_MASK_VALID          BIT11
@@ -61,6 +63,18 @@ SmmCpuFeaturesInitializeProcessor (
   CpuState = (SMRAM_SAVE_STATE_MAP *)(UINTN)(SMM_DEFAULT_SMBASE + SMRAM_SAVE_STATE_MAP_OFFSET);
   CpuState->x86.SMBASE = CpuHotPlugData->SmBase[CpuIndex];
 
+  //
+  // SMRR size cannot be less than 4-KBytes
+  // SMRR size must be of length 2^n
+  // SMRR base alignment cannot be less than SMRR length
+  //
+  if ((CpuHotPlugData->SmrrSize < SIZE_4KB) ||
+      (CpuHotPlugData->SmrrSize != GetPowerOfTwo32 (CpuHotPlugData->SmrrSize)) ||
+      ((CpuHotPlugData->SmrrBase & ~(CpuHotPlugData->SmrrSize - 1)) != CpuHotPlugData->SmrrBase)) {
+    DEBUG ((EFI_D_ERROR, "SMM Base/Size does not meet alignment/size requirement!\n"));
+    CpuDeadLoop ();
+  }
+
   //
   // Use QNC to initialize SMRR on Quark
   //
diff --git a/QuarkSocPkg/QuarkNorthCluster/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.inf b/QuarkSocPkg/QuarkNorthCluster/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.inf
index 473ece0d49..267ac8423d 100644
--- a/QuarkSocPkg/QuarkNorthCluster/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.inf
+++ b/QuarkSocPkg/QuarkNorthCluster/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.inf
@@ -1,7 +1,7 @@
 ## @file
 #  The CPU specific programming for PiSmmCpuDxeSmm module.
 #
-#  Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) 2009 - 2016, 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
 #  which accompanies this distribution.  The full text of the license may be found at
@@ -30,5 +30,7 @@
   SmmCpuFeaturesLib.c
 
 [LibraryClasses]
+  BaseLib
+  DebugLib
   QNCAccessLib
 
-- 
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