vendorcode/intel/fsp/fsp2_0/cpx_sp: Update to FSP ww24 release and adapt soc

The previous Intel CPX-SP FSP release was ww20 release.

The ww22 release fixs issues related to FSP_NV_STORAGE HOB. The end of end
flow of using memory training data to generate FSP_NV_STORAGE HOB and
using memory training data passed from bootloader to skip memory
training, works now. This saves 8 minutes of boot time (with FSP verbose
logging enabled on DeltaLake server).

This release also adds UPD parameters to support IIO bifuration.

The ww24 release has following updates:
a. Removed a number of unnecessary UPD parameters, such as mmiolSize,
mmiolBase, OemHookPostTopologyDiscovery, OemGetResourceMapUpdate.
b. Added UPD parameters to support PCIe ports configuration.
c. Updated IIO_UNIVERSAL_DATA HOB, each stack now has mmio base/limit
fields, in addition to PCIe resource memory base/limit fields.

With ww24 release, the issue with PCIe link training persists. On YV3
config A, the onboard NIC card has x4 connection to port 2D. This
NIC device is not recognized by FSP.

Corresponding soc/intel/xeon_sp/cpx change is made:
* There are changes in PLATFORM_DATA structure, so hob_display.c
is updated.
* There are changes in UPD parameters, so romstage.c is updated.

Signed-off-by: Jonathan Zhang <jonzhang@fb.com>
Change-Id: I70762b377a057d0fca7806f485cce8d479fb5baa
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41903
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

5 files changed, 197 insertions, 93 deletions

diff --git a/src/soc/intel/xeon_sp/cpx/hob_display.c b/src/soc/intel/xeon_sp/cpx/hob_display.c
index 37c0c7e773..d10a0f6515 100644
--- a/src/soc/intel/xeon_sp/cpx/hob_display.c
+++ b/src/soc/intel/xeon_sp/cpx/hob_display.c
@@ -97,14 +97,14 @@ void soc_display_iio_universal_data_hob(void)
 	printk(BIOS_DEBUG, "\t===================== PLATFORM DATA =====================\n");
 	printk(BIOS_DEBUG, "\tPlatGlobalIoBase: 0x%x\n", hob->PlatformData.PlatGlobalIoBase);
 	printk(BIOS_DEBUG, "\tPlatGlobalIoLimit: 0x%x\n", hob->PlatformData.PlatGlobalIoLimit);
-	printk(BIOS_DEBUG, "\tPlatGlobalMmiolBase: 0x%x\n",
-		hob->PlatformData.PlatGlobalMmiolBase);
-	printk(BIOS_DEBUG, "\tPlatGlobalMmiolLimit: 0x%x\n",
-		hob->PlatformData.PlatGlobalMmiolLimit);
-	printk(BIOS_DEBUG, "\tPlatGlobalMmiohBase: 0x%llx\n",
-		hob->PlatformData.PlatGlobalMmiohBase);
-	printk(BIOS_DEBUG, "\tPlatGlobalMmiohLimit: 0x%llx\n",
-		hob->PlatformData.PlatGlobalMmiohLimit);
+	printk(BIOS_DEBUG, "\tPlatGlobalMmio32Base: 0x%x\n",
+		hob->PlatformData.PlatGlobalMmio32Base);
+	printk(BIOS_DEBUG, "\tPlatGlobalMmio32Limit: 0x%x\n",
+		hob->PlatformData.PlatGlobalMmio32Limit);
+	printk(BIOS_DEBUG, "\tPlatGlobalMmio64Base: 0x%llx\n",
+		hob->PlatformData.PlatGlobalMmio64Base);
+	printk(BIOS_DEBUG, "\tPlatGlobalMmio64Limit: 0x%llx\n",
+		hob->PlatformData.PlatGlobalMmio64Limit);
 	printk(BIOS_DEBUG, "\tMemTsegSize: 0x%x\n", hob->PlatformData.MemTsegSize);
 	printk(BIOS_DEBUG, "\tMemIedSize: 0x%x\n", hob->PlatformData.MemIedSize);
 	printk(BIOS_DEBUG, "\tPciExpressBase: 0x%llx\n", hob->PlatformData.PciExpressBase);
diff --git a/src/soc/intel/xeon_sp/cpx/romstage.c b/src/soc/intel/xeon_sp/cpx/romstage.c
index cbaa006219..4b97ddc96d 100644
--- a/src/soc/intel/xeon_sp/cpx/romstage.c
+++ b/src/soc/intel/xeon_sp/cpx/romstage.c
@@ -33,7 +33,6 @@ void platform_fsp_memory_init_params_cb(FSPM_UPD *mupd, uint32_t version)
 	/* Bitmask for valid sockets supported by the board */
 	m_cfg->BoardTypeBitmask = 0x11111111;
 
-	m_cfg->mmiolSize = 0x0;
 	m_cfg->mmiohBase = 0x2000;
 
 	/* default: 0x1 (enable), set to 0x2 (auto) */
@@ -65,9 +64,6 @@ void platform_fsp_memory_init_params_cb(FSPM_UPD *mupd, uint32_t version)
 	/* the wait time in units of 1000us for PBSP to check in */
 	m_cfg->WaitTimeForPSBP = 0x7530;
 
-	m_cfg->OemHookPostTopologyDiscovery = 0xFFF7727B;
-	m_cfg->OemGetResourceMapUpdate = 0xFFF7727C;
-
 	/* Needed to avoid FSP-M reset. The default value of 0x01 is for MinPlatform */
 	m_cfg->PchAdrEn = 0x02;
 
diff --git a/src/vendorcode/intel/fsp/fsp2_0/cooperlake_sp/FspmUpd.h b/src/vendorcode/intel/fsp/fsp2_0/cooperlake_sp/FspmUpd.h
index c4c23dfb94..fd84f1a886 100644
--- a/src/vendorcode/intel/fsp/fsp2_0/cooperlake_sp/FspmUpd.h
+++ b/src/vendorcode/intel/fsp/fsp2_0/cooperlake_sp/FspmUpd.h
@@ -355,183 +355,285 @@ typedef struct {
 **/
   UINT8                       UnusedUpdSpace0;
 
-/** Offset 0x0094 - MMIO Low Base Address
-  Select MMIO Low Base Address
-  0:, 1:, 2:, 3:, 4:, 5:, 6:
-**/
-  UINT32                      mmiolBase;
-
-/** Offset 0x0098 - MMIO Low Size
-  Select MMIO Low Size
-  $EN_DIS
-**/
-  UINT32                      mmiolSize;
-
-/** Offset 0x009C - MMIO High Base Address
-  Select MMIO High Base Address
-  0:, 1:, 2:, 3:, 4:, 5:, 6:
+/** Offset 0x0094 - MMIO High Base Address
+  MMIO High Base Address, a hex number for Bit[51:32]
 **/
   UINT32                      mmiohBase;
 
-/** Offset 0x00A0 - High Gap
+/** Offset 0x0098 - High Gap
   Enable or Disable High Gap
   $EN_DIS
 **/
   UINT8                       highGap;
 
-/** Offset 0x00A1
+/** Offset 0x0099
 **/
   UINT8                       UnusedUpdSpace1;
 
-/** Offset 0x00A2 - MMIO High Size
-  Select MMIO High Size
-  0:, 1:, 2:, 3:, 4:, 5:, 6:
+/** Offset 0x009A - MMIO High Size
+  MMIO High Size, Number of 1GB contiguous regions to be assigned for MMIOH space
+  per CPU.  Range 1-1024
 **/
   UINT16                      mmiohSize;
 
-/** Offset 0x00A4 - } TYPE:{Combo
+/** Offset 0x009C - } TYPE:{Combo
   Enable or Disable
   $EN_DIS
 **/
   UINT8                       isocEn;
 
-/** Offset 0x00A5 - DCA
+/** Offset 0x009D - DCA
   Enable or Disable DCA
   $EN_DIS
 **/
   UINT8                       dcaEn;
 
-/** Offset 0x00A6
+/** Offset 0x009E
 **/
   UINT8                       UnusedUpdSpace2[2];
 
-/** Offset 0x00A8 - } TYPE:{Combo
+/** Offset 0x00A0 - } TYPE:{Combo
   Enable or Disable
   $EN_DIS
 **/
   UINT32                      BoardTypeBitmask;
 
-/** Offset 0x00AC - } TYPE:{Combo
+/** Offset 0x00A4 - } TYPE:{Combo
   Enable or Disable
   $EN_DIS
 **/
   UINT32                      AllLanesPtr;
 
-/** Offset 0x00B0 - } TYPE:{Combo
+/** Offset 0x00A8 - } TYPE:{Combo
   Enable or Disable
   $EN_DIS
 **/
   UINT32                      PerLanePtr;
 
-/** Offset 0x00B4 - } TYPE:{Combo
+/** Offset 0x00AC - } TYPE:{Combo
   Enable or Disable
   $EN_DIS
 **/
   UINT32                      AllLanesSizeOfTable;
 
-/** Offset 0x00B8 - } TYPE:{Combo
+/** Offset 0x00B0 - } TYPE:{Combo
   Enable or Disable
   $EN_DIS
 **/
   UINT32                      PerLaneSizeOfTable;
 
-/** Offset 0x00BC - } TYPE:{Combo
+/** Offset 0x00B4 - } TYPE:{Combo
   Enable or Disable
   $EN_DIS
 **/
   UINT32                      WaitTimeForPSBP;
 
-/** Offset 0x00C0 - } TYPE:{Combo
+/** Offset 0x00B8 - } TYPE:{Combo
   Enable or Disable
   $EN_DIS
 **/
   UINT8                       IsKtiNvramDataReady;
 
-/** Offset 0x00C1
-**/
-  UINT8                       UnusedUpdSpace3[3];
-
-/** Offset 0x00C4 - } TYPE:{Combo
+/** Offset 0x00B9 - } TYPE:{Combo
   Enable or Disable
   $EN_DIS
 **/
-  UINT32                      OemHookPostTopologyDiscovery;
+  UINT8                       BoardId;
 
-/** Offset 0x00C8 - } TYPE:{Combo
+/** Offset 0x00BA - } TYPE:{Combo
   Enable or Disable
   $EN_DIS
 **/
-  UINT32                      OemGetResourceMapUpdate;
+  UINT8                       WaSerializationEn;
 
-/** Offset 0x00CC - } TYPE:{Combo
+/** Offset 0x00BB - } TYPE:{Combo
   Enable or Disable
   $EN_DIS
 **/
-  UINT8                       BoardId;
+  UINT8                       KtiInEnableMktme;
 
-/** Offset 0x00CD - } TYPE:{Combo
-  Enable or Disable
+/** Offset 0x00BC - IIO ConfigIOU0
+  ConfigIOU[MAX_SOCKET][0]: MAX_SOCKET=8, 0x00:x4x4x4x4, 0x01:x4x4xxx8, 0x02:xxx8x4x4,
+  0x03:xxx8xxx8, 0x04:xxxxxx16, 0xFF:AUTO
   $EN_DIS
 **/
-  UINT8                       WaSerializationEn;
+  UINT8                       IioConfigIOU0[8];
 
-/** Offset 0x00CE - } TYPE:{Combo
-  Enable or Disable
-  $EN_DIS
+/** Offset 0x00C4 - IIO ConfigIOU1
+  ConfigIOU[MAX_SOCKET][1]: MAX_SOCKET=8, 0x00:x4x4x4x4, 0x01:x4x4xxx8, 0x02:xxx8x4x4,
+  0x03:xxx8xxx8, 0x04:xxxxxx16, 0xFF:AUTO
 **/
-  UINT8                       KtiInEnableMktme;
+  UINT8                       IioConfigIOU1[8];
 
-/** Offset 0x00CF
+/** Offset 0x00CC - IIO ConfigIOU2
+  ConfigIOU[MAX_SOCKET][2]: MAX_SOCKET=8, 0x00:x4x4x4x4, 0x01:x4x4xxx8, 0x02:xxx8x4x4,
+  0x03:xxx8xxx8, 0x04:xxxxxx16, 0xFF:AUTO
 **/
-  UINT8                       UnusedUpdSpace4;
+  UINT8                       IioConfigIOU2[8];
 
-/** Offset 0x00D0 - Address of IIoBifurcationTable.
-  The address of the table of IIoBifurcation.
-  $EN_DIS
+/** Offset 0x00D4 - IIO ConfigIOU3
+  ConfigIOU[MAX_SOCKET][3]: MAX_SOCKET=8, 0x00:x4x4x4x4, 0x01:x4x4xxx8, 0x02:xxx8x4x4,
+  0x03:xxx8xxx8, 0x04:xxxxxx16, 0xFF:AUTO
+**/
+  UINT8                       IioConfigIOU3[8];
+
+/** Offset 0x00DC - IIO ConfigIOU4
+  ConfigIOU[MAX_SOCKET][4]: MAX_SOCKET=8, 0x00:x4x4x4x4, 0x01:x4x4xxx8, 0x02:xxx8x4x4,
+  0x03:xxx8xxx8, 0x04:xxxxxx16, 0xFF:AUTO
+**/
+  UINT8                       IioConfigIOU4[8];
+
+/** Offset 0x00E4 - Usage type for IIO PCIE Config Table Ptr
+  IIO PCIE Config Table Ptr
+**/
+  UINT32                      IioPcieConfigTablePtr;
+
+/** Offset 0x00E8 - Usage type for IIO PCIE Config Table Number
+  IIO PCIE Config Table Number
+**/
+  UINT32                      IioPcieConfigTableNumber;
+
+/** Offset 0x00EC - Usage type for IIO PCIE Root Port Enable or Disable
+  IIO PCH rootport, if port is enabled, the value is 0x01, if the port is disabled,
+  the value is 0x00
+**/
+  UINT8                       IIOPcieRootPortEnable;
+
+/** Offset 0x00ED - Usage type for IIO DeEmphasis
+  IIO DeEmphasis
 **/
-  UINT32                      IIoBifurcationTablePtr;
+  UINT8                       DeEmphasis;
 
-/** Offset 0x00D4 - Number of IIoBifurcationTable Entry
-  Number of IIoBifurcationTable Entry. If this is not zero, the IIoBifurcationTablePtr
-  must not be NULL.
+/** Offset 0x00EE - Usage type for IIO PCIE Root Port link speed
+  IIO root port link speed
 **/
-  UINT8                       NumOfIIoBifurcationTable;
+  UINT8                       IIOPciePortLinkSpeed;
 
-/** Offset 0x00D5 - PchAdrEn
+/** Offset 0x00EF - Usage type for IIO PCIE Root Port Max Payload
+  IIO Root Port Max Payload
+**/
+  UINT8                       IIOPcieMaxPayload;
+
+/** Offset 0x00F0 - Usage type for IIO DfxDnTxPreset
+  IIO DfxDnTxPreset
+**/
+  UINT8                       DfxDnTxPreset;
+
+/** Offset 0x00F1 - Usage type for IIO DfxRxPreset
+  IIO DfxRxPreset
+**/
+  UINT8                       DfxRxPreset;
+
+/** Offset 0x00F2 - Usage type for IIO DfxUpTxPreset
+  IIO DfxUpTxPreset
+**/
+  UINT8                       DfxUpTxPreset;
+
+/** Offset 0x00F3 - Usage type for IIO PcieCommonClock
+  IIO PcieCommonClock
+**/
+  UINT8                       PcieCommonClock;
+
+/** Offset 0x00F4 - Usage type for IIO NtbPpd
+  IIO NtbPpd
+**/
+  UINT8                       NtbPpd;
+
+/** Offset 0x00F5 - Usage type for IIO NtbBarSizeOverride
+  IIO NtbBarSizeOverride
+**/
+  UINT8                       NtbBarSizeOverride;
+
+/** Offset 0x00F6 - Usage type for IIO NtbSplitBar
+  IIO NtbSplitBar
+**/
+  UINT8                       NtbSplitBar;
+
+/** Offset 0x00F7 - Usage type for IIO NtbBarSizeImBar1
+  IIO NtbBarSizeImBar1
+**/
+  UINT8                       NtbBarSizeImBar1;
+
+/** Offset 0x00F8 - Usage type for IIO NtbBarSizeImBar2
+  IIO PNtbBarSizeImBar2
+**/
+  UINT8                       NtbBarSizeImBar2;
+
+/** Offset 0x00F9 - Usage type for IIO NtbBarSizeImBar2_0
+  IIO PNtbBarSizeImBar2_0
+**/
+  UINT8                       NtbBarSizeImBar2_0;
+
+/** Offset 0x00FA - Usage type for IIO NtbBarSizeImBar2_1
+  IIO NtbBarSizeImBar2_1
+**/
+  UINT8                       NtbBarSizeImBar2_1;
+
+/** Offset 0x00FB - Usage type for IIO NtbBarSizeEmBarSZ1
+  IIO NtbBarSizeEmBarSZ1
+**/
+  UINT8                       NtbBarSizeEmBarSZ1;
+
+/** Offset 0x00FC - Usage type for IIO NtbBarSizeEmBarSZ2
+  IIO NtbBarSizeEmBarSZ2
+**/
+  UINT8                       NtbBarSizeEmBarSZ2;
+
+/** Offset 0x00FD - Usage type for IIO NtbBarSizeEmBarSZ2_0
+  IIO NtbBarSizeEmBarSZ2_0
+**/
+  UINT8                       NtbBarSizeEmBarSZ2_0;
+
+/** Offset 0x00FE - Usage type for IIO NtbBarSizeEmBarSZ2_1
+  IIO NtbBarSizeEmBarSZ2_1
+**/
+  UINT8                       NtbBarSizeEmBarSZ2_1;
+
+/** Offset 0x00FF - Usage type for IIO NtbXlinkCtlOverride
+  IIO NtbXlinkCtlOverride
+**/
+  UINT8                       NtbXlinkCtlOverride;
+
+/** Offset 0x0100 - PchAdrEn
+  Enable or Disable PchSirqMode
+**/
+  UINT8                       PchSirqMode;
+
+/** Offset 0x0101 - PchAdrEn
   Enable or Disable PchAdr
 **/
   UINT8                       PchAdrEn;
 
-/** Offset 0x00D6 - } TYPE:{Combo
-  Enable or Disable
-  $EN_DIS
+/** Offset 0x0102 - } TYPE:{Combo
+  Root port swapping based on device connection status : TRUE or FALSE
+  TRUE : 0x01, FALSE : 0x00
 **/
   UINT8                       PchPcieRootPortFunctionSwap;
 
-/** Offset 0x00D7 - PCH PCIE PLL Ssc
+/** Offset 0x0103 - PCH PCIE PLL Ssc
   Valid spread range : 0x00-0x14 (A value of 0 is SSC of 0.0%. A value of 20 is SSC
   of 2.0%), Auto : 0xFE(Set to hardware default), Disable : 0xFF
 **/
   UINT8                       PchPciePllSsc;
 
-/** Offset 0x00D8 - Usage type for PCH PCIE Root Port Index
+/** Offset 0x0104 - Usage type for PCH PCIE Root Port Index
   Index assigned to every PCH PCIE Root Port
 **/
   UINT8                       PchPciePortIndex[20];
 
-/** Offset 0x00EC - Usage type for PCH PCIE Root Port Enable or Disable
-  0-19: PCH rootport, 0x40-0x43: PEG port, 0x70:LAN, 0x80: unspecified but in use
-  (free running), 0xFF: not used
+/** Offset 0x0118 - Usage type for PCH PCIE Root Port Enable or Disable
+  0-19: PCH rootport, if port is enabled, the value is 0x01, if the port is disabled,
+  the value is 0x00
 **/
   UINT8                       PchPcieForceEnable[20];
 
-/** Offset 0x0100 - Usage type for PCH PCIE Root Port Link Speed
-  0-19: PCH rootport, 0x40-0x43: PEG port, 0x70:LAN, 0x80: unspecified but in use
-  (free running), 0xFF: not used
+/** Offset 0x012C - Usage type for PCH PCIE Root Port Link Speed
+  0-19: PCH rootport, 0x00 : Pcie Auto Speed, 0x01 : Pcie Gen1 Speed, 0x02 : Pcie
+  Gen2 Speed, 0x03 : Pcie Gen3 Speed
 **/
   UINT8                       PchPciePortLinkSpeed[20];
 
-/** Offset 0x0114
+/** Offset 0x0140
 **/
   UINT8                       ReservedMemoryInitUpd[16];
 } FSP_M_CONFIG;
@@ -552,11 +654,11 @@ typedef struct {
 **/
   FSP_M_CONFIG                 FspmConfig;
 
-/** Offset 0x0124
+/** Offset 0x0150
 **/
-  UINT8                       UnusedUpdSpace5[2];
+  UINT8                       UnusedUpdSpace3[6];
 
-/** Offset 0x0126
+/** Offset 0x0156
 **/
   UINT16                      UpdTerminator;
 } FSPM_UPD;
diff --git a/src/vendorcode/intel/fsp/fsp2_0/cooperlake_sp/hob_iiouds.h b/src/vendorcode/intel/fsp/fsp2_0/cooperlake_sp/hob_iiouds.h
index 1ce5d3077a..14e235f320 100644
--- a/src/vendorcode/intel/fsp/fsp2_0/cooperlake_sp/hob_iiouds.h
+++ b/src/vendorcode/intel/fsp/fsp2_0/cooperlake_sp/hob_iiouds.h
@@ -203,6 +203,10 @@ typedef struct _STACK_RES {
   uint16_t                  PciResourceIoLimit;
   uint32_t                  IoApicBase;
   uint32_t                  IoApicLimit;
+  uint32_t                  Mmio32Base;
+  uint32_t                  Mmio32Limit;
+  uint64_t                  Mmio64Base;
+  uint64_t                  Mmio64Limit;
   uint32_t                  PciResourceMem32Base;
   uint32_t                  PciResourceMem32Limit;
   uint64_t                  PciResourceMem64Base;
@@ -233,10 +237,10 @@ typedef struct {
 typedef struct {
     uint16_t                  PlatGlobalIoBase;       // Global IO Base
     uint16_t                  PlatGlobalIoLimit;      // Global IO Limit
-    uint32_t                  PlatGlobalMmiolBase;    // Global Mmiol base
-    uint32_t                  PlatGlobalMmiolLimit;   // Global Mmiol limit
-    uint64_t                  PlatGlobalMmiohBase;    // Global Mmioh Base [43:0]
-    uint64_t                  PlatGlobalMmiohLimit;   // Global Mmioh Limit [43:0]
+    uint32_t                  PlatGlobalMmio32Base;    // Global Mmiol base
+    uint32_t                  PlatGlobalMmio32Limit;   // Global Mmiol limit
+    uint64_t                  PlatGlobalMmio64Base;    // Global Mmioh Base [43:0]
+    uint64_t                  PlatGlobalMmio64Limit;   // Global Mmioh Limit [43:0]
     QPI_CPU_DATA              CpuQpiInfo[MAX_SOCKET]; // QPI related info per CPU
     QPI_IIO_DATA              IioQpiInfo[MAX_SOCKET]; // QPI related info per IIO
     uint32_t                  MemTsegSize;
@@ -256,10 +260,8 @@ typedef struct {
     uint32_t                  MmiolGranularity;
     UINT64_STRUCT             MmiohGranularity;
     uint8_t                   RemoteRequestThreshold;  //5370389
-    uint64_t                  softskuSocketPresentBitMap;    // bitmap of Softsku sockets with CPUs present detected
     uint32_t                  UboxMmioSize;
     uint32_t                  MaxAddressBits;
-    uint32_t                  DmiReservedMmiolSize[MAX_SOCKET];
 } PLATFORM_DATA;
 
 typedef struct {
@@ -273,7 +275,6 @@ typedef struct {
 	uint8_t                   DmiVc1;
 	uint8_t                   DmiVcm;
 	uint32_t                  CpuPCPSInfo;
-	uint8_t                   LtsxEnable;
 	uint8_t                   MctpEn;
 	uint8_t                   cpuSubType;
 	uint8_t                   SystemRasType;
diff --git a/src/vendorcode/intel/fsp/fsp2_0/cooperlake_sp/hob_memmap.h b/src/vendorcode/intel/fsp/fsp2_0/cooperlake_sp/hob_memmap.h
index 6b0823cb51..e9c7dbf90e 100644
--- a/src/vendorcode/intel/fsp/fsp2_0/cooperlake_sp/hob_memmap.h
+++ b/src/vendorcode/intel/fsp/fsp2_0/cooperlake_sp/hob_memmap.h
@@ -99,7 +99,12 @@ typedef struct SystemMemoryMapHob {
   UINT8    numberEntries;                         // Number of Memory Map Elements
   SYSTEM_MEMORY_MAP_ELEMENT Element[MAX_SOCKET * MAX_DRAM_CLUSTERS * MAX_SAD_RULES];
 
-  UINT8    reserved3[24409];
+  UINT8    reserved3[24417];
+
+  UINT32   MmiohBase;                                   // MMIOH base in 64MB granularity
+
+  UINT8    reserved4[10];
+
 } SYSTEM_MEMORY_MAP_HOB;
 
 #pragma pack()