Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Guo Mang <mang.guo@intel.com>
---
 .../BroxtonSiPkg/SouthCluster/Include/ScRegs/RegsSpi.h   |  3 ++-
 .../SouthCluster/Library/BaseScSpiCommonLib/SpiCommon.c  | 10 ++++++++++
 .../BroxtonSiPkg/SouthCluster/ScInit/Dxe/ScInit.c        | 16 ++++++++++++++++
 3 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/Silicon/BroxtonSoC/BroxtonSiPkg/SouthCluster/Include/ScRegs/RegsSpi.h b/Silicon/BroxtonSoC/BroxtonSiPkg/SouthCluster/Include/ScRegs/RegsSpi.h
index 27cc50b..5c961e6 100644
--- a/Silicon/BroxtonSoC/BroxtonSiPkg/SouthCluster/Include/ScRegs/RegsSpi.h
+++ b/Silicon/BroxtonSoC/BroxtonSiPkg/SouthCluster/Include/ScRegs/RegsSpi.h
@@ -17,7 +17,7 @@
   - Registers / bits of new devices introduced in a SC generation will be just named
     as "_SC_" without <generation_name> inserted.
 
-  Copyright (c) 2011 - 2016, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2011 - 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
@@ -92,6 +92,7 @@
 #define B_SPI_HSFS_FLOCKDN               BIT15         ///< Flash Configuration Lock-Down
 #define B_SPI_HSFS_FDV                   BIT14         ///< Flash Descriptor Valid
 #define B_SPI_HSFS_FDOPSS                BIT13         ///< Flash Descriptor Override Pin-Strap Status
+#define B_SPI_HSFS_WRSDIS                BIT11         ///< Write Status Disable
 #define B_SPI_HSFS_SCIP                  BIT5          ///< SPI Cycle in Progress
 #define B_SPI_HSFS_BERASE_MASK           (BIT4 | BIT3) ///< Block/Sector Erase Size
 #define V_SPI_HSFS_BERASE_256B           0//0x00       ///< Block/Sector = 256 Bytes
diff --git a/Silicon/BroxtonSoC/BroxtonSiPkg/SouthCluster/Library/BaseScSpiCommonLib/SpiCommon.c b/Silicon/BroxtonSoC/BroxtonSiPkg/SouthCluster/Library/BaseScSpiCommonLib/SpiCommon.c
index 97a13fa..722f297 100644
--- a/Silicon/BroxtonSoC/BroxtonSiPkg/SouthCluster/Library/BaseScSpiCommonLib/SpiCommon.c
+++ b/Silicon/BroxtonSoC/BroxtonSiPkg/SouthCluster/Library/BaseScSpiCommonLib/SpiCommon.c
@@ -601,6 +601,7 @@ SendSpiCmd (
   UINT8           BiosCtlSave;
   UINT32          SmiEnSave;
   UINT16          ABase;
+  UINT32          HsfstsCtl;
 
   Status            = EFI_SUCCESS;
   SpiInstance       = SPI_INSTANCE_FROM_SPIPROTOCOL (This);
@@ -653,6 +654,15 @@ SendSpiCmd (
     goto SendSpiCmdEnd;
   }
 
+
+  if (FlashCycleType == FlashCycleWriteStatus) {
+    HsfstsCtl = MmioRead32 (ScSpiBar0 + R_SPI_HSFS);
+    if ((HsfstsCtl & B_SPI_HSFS_WRSDIS) != 0) {
+      Status = EFI_ACCESS_DENIED;
+      goto SendSpiCmdEnd;
+    }
+  }
+
   HardwareSpiAddr = Address;
   if ((FlashCycleType == FlashCycleRead) ||
       (FlashCycleType == FlashCycleWrite) ||
diff --git a/Silicon/BroxtonSoC/BroxtonSiPkg/SouthCluster/ScInit/Dxe/ScInit.c b/Silicon/BroxtonSoC/BroxtonSiPkg/SouthCluster/ScInit/Dxe/ScInit.c
index 3fb37ea..ebb424b 100644
--- a/Silicon/BroxtonSoC/BroxtonSiPkg/SouthCluster/ScInit/Dxe/ScInit.c
+++ b/Silicon/BroxtonSoC/BroxtonSiPkg/SouthCluster/ScInit/Dxe/ScInit.c
@@ -639,6 +639,8 @@ ScOnEndOfDxe (
   UINT16                     Data16Or;
   SI_POLICY_HOB              *SiPolicyHob;
   EFI_PEI_HOB_POINTERS       HobPtr;
+  UINT16                     Data16;
+  UINTN                      SpiBar0;
 
   NumOfDevltrOverride = 0;
   PciLpcRegBase = MmPciBase (
@@ -678,6 +680,20 @@ ScOnEndOfDxe (
     (VOID *) (UINTN) (PmcBase + R_PMC_PMIR)
     );
 
+  if (BxtSeries == BxtP){
+    SpiBar0 = MmioRead32 (PciSpiRegBase + R_SPI_BASE) &~(B_SPI_BAR0_MASK);
+
+    Data16 = (UINT16) (B_SPI_HSFS_FLOCKDN | B_SPI_HSFS_WRSDIS);
+    MmioWrite16 ((UINTN) (SpiBar0 + R_SPI_HSFS), Data16);
+    S3BootScriptSaveMemWrite (
+      EfiBootScriptWidthUint16,
+      (UINTN) (SpiBar0 + R_SPI_HSFS),
+      1,
+      &Data16
+      );
+
+  }
+  
   Status = GetConfigBlock ((VOID *) mScPolicy, &gLockDownConfigGuid, (VOID *) &LockDownConfig);
   ASSERT_EFI_ERROR (Status);
   if (LockDownConfig->GlobalSmi == TRUE) {
-- 
2.10.1.windows.1

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