Added ACPI tables and GUID name 'gSgiClarkHeliosAcpiTablesFileGuid'
for SGI-Clark.Helios platform.

Contributed-under: TianoCore Contribution Agreement 1.1
Cc: Leif Lindholm <leif.lindh...@linaro.org>
Cc: Ard Biesheuvel <ard.biesheu...@linaro.org>
Signed-off-by: Chandni Cherukuri <chandni.cheruk...@arm.com>
---
 Platform/ARM/SgiPkg/SgiPlatform.dec                     |   1 +
 Platform/ARM/SgiPkg/SgiPlatform.dsc                     |   1 +
 Platform/ARM/SgiPkg/SgiPlatform.fdf                     |   1 +
 Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/AcpiTables.inf |  58 +++++
 Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.inf |   1 +
 Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Dbg2.aslc      |  90 +++++++
 Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Dsdt.asl       | 262 
+++++++++++++++++++
 Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Fadt.aslc      |  87 +++++++
 Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Gtdt.aslc      | 152 +++++++++++
 Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Iort.aslc      | 106 ++++++++
 Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Madt.aslc      | 266 
++++++++++++++++++++
 Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Mcfg.aslc      |  61 +++++
 Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Spcr.aslc      |  77 ++++++
 Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Ssdt.asl       |  95 +++++++
 14 files changed, 1258 insertions(+)

diff --git a/Platform/ARM/SgiPkg/SgiPlatform.dec 
b/Platform/ARM/SgiPkg/SgiPlatform.dec
index f66fa1f..f6e0ba1 100644
--- a/Platform/ARM/SgiPkg/SgiPlatform.dec
+++ b/Platform/ARM/SgiPkg/SgiPlatform.dec
@@ -34,6 +34,7 @@
   gArmSgiTokenSpaceGuid      = { 0x577d6941, 0xaea1, 0x40b4, { 0x90, 0x93, 
0x2a, 0x86, 0x61, 0x72, 0x5a, 0x57 } }
   gSgi575AcpiTablesFileGuid  = { 0xc712719a, 0x0aaf, 0x438c, { 0x9c, 0xdd, 
0x35, 0xab, 0x4d, 0x60, 0x20, 0x7d } }
   gSgiClarkAresAcpiTablesFileGuid = { 0x4b0b91d0, 0x4a05, 0x45c4, { 0x88, 
0xa7, 0x88, 0xe1, 0x70, 0xe7, 0x66, 0x94 } }
+  gSgiClarkHeliosAcpiTablesFileGuid = { 0x2af40815, 0xa84e, 0x4de9, { 0x8c, 
0x38, 0x91, 0x40, 0xb3, 0x54, 0x40, 0x73 } }
 
 [PcdsFeatureFlag.common]
   # Set this PCD to TRUE to enable virtio support.
diff --git a/Platform/ARM/SgiPkg/SgiPlatform.dsc 
b/Platform/ARM/SgiPkg/SgiPlatform.dsc
index 0df0f88..99babd9 100644
--- a/Platform/ARM/SgiPkg/SgiPlatform.dsc
+++ b/Platform/ARM/SgiPkg/SgiPlatform.dsc
@@ -252,6 +252,7 @@
   MdeModulePkg/Universal/Acpi/AcpiTableDxe/AcpiTableDxe.inf
   Platform/ARM/SgiPkg/AcpiTables/Sgi575/AcpiTables.inf
   Platform/ARM/SgiPkg/AcpiTables/SgiClarkA/AcpiTables.inf
+  Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/AcpiTables.inf
   MdeModulePkg/Universal/HiiDatabaseDxe/HiiDatabaseDxe.inf
 
   #
diff --git a/Platform/ARM/SgiPkg/SgiPlatform.fdf 
b/Platform/ARM/SgiPkg/SgiPlatform.fdf
index f400083..8ec3374 100644
--- a/Platform/ARM/SgiPkg/SgiPlatform.fdf
+++ b/Platform/ARM/SgiPkg/SgiPlatform.fdf
@@ -107,6 +107,7 @@ READ_LOCK_STATUS   = TRUE
   INF MdeModulePkg/Universal/Acpi/AcpiTableDxe/AcpiTableDxe.inf
   INF RuleOverride=ACPITABLE 
Platform/ARM/SgiPkg/AcpiTables/Sgi575/AcpiTables.inf
   INF RuleOverride=ACPITABLE 
Platform/ARM/SgiPkg/AcpiTables/SgiClarkA/AcpiTables.inf
+  INF RuleOverride=ACPITABLE 
Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/AcpiTables.inf
   INF MdeModulePkg/Universal/HiiDatabaseDxe/HiiDatabaseDxe.inf
 
   # Required by PCI
diff --git a/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/AcpiTables.inf 
b/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/AcpiTables.inf
new file mode 100644
index 0000000..63ebf55
--- /dev/null
+++ b/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/AcpiTables.inf
@@ -0,0 +1,58 @@
+## @file
+#  ACPI table data and ASL sources required to boot the platform.
+#
+#  Copyright (c) 2018, ARM Ltd. All rights reserved.
+#
+#  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
+#  http://opensource.org/licenses/bsd-license.php
+#
+#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR 
IMPLIED.
+#
+##
+
+[Defines]
+  INF_VERSION                    = 0x0001001A
+  BASE_NAME                      = SgiClarkHeliosAcpiTables
+  FILE_GUID                      = 2af40815-a84e-4de9-8c38-9140b3544073
+  MODULE_TYPE                    = USER_DEFINED
+  VERSION_STRING                 = 1.0
+
+[Sources]
+  Dbg2.aslc
+  Dsdt.asl
+  Fadt.aslc
+  Gtdt.aslc
+  Iort.aslc
+  Madt.aslc
+  Mcfg.aslc
+  Spcr.aslc
+  Ssdt.asl
+
+[Packages]
+  ArmPkg/ArmPkg.dec
+  ArmPlatformPkg/ArmPlatformPkg.dec
+  EmbeddedPkg/EmbeddedPkg.dec
+  MdePkg/MdePkg.dec
+  Platform/ARM/SgiPkg/SgiPlatform.dec
+
+[FixedPcd]
+  gArmPlatformTokenSpaceGuid.PcdCoreCount
+  gArmPlatformTokenSpaceGuid.PcdClusterCount
+  gArmPlatformTokenSpaceGuid.PcdSerialDbgRegisterBase
+  gArmPlatformTokenSpaceGuid.PL011UartInterrupt
+
+  gArmTokenSpaceGuid.PcdArmArchTimerSecIntrNum
+  gArmTokenSpaceGuid.PcdArmArchTimerIntrNum
+  gArmTokenSpaceGuid.PcdArmArchTimerHypIntrNum
+  gArmTokenSpaceGuid.PcdArmArchTimerVirtIntrNum
+  gArmTokenSpaceGuid.PcdGicDistributorBase
+  gArmTokenSpaceGuid.PcdGicRedistributorsBase
+  gArmTokenSpaceGuid.PcdGenericWatchdogControlBase
+  gArmTokenSpaceGuid.PcdGenericWatchdogRefreshBase
+  gArmTokenSpaceGuid.PcdPciBusMin
+  gArmTokenSpaceGuid.PcdPciBusMax
+
+  gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress
diff --git a/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.inf 
b/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.inf
index 0371c40..d903ed8 100644
--- a/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.inf
+++ b/Platform/ARM/SgiPkg/Drivers/PlatformDxe/PlatformDxe.inf
@@ -38,6 +38,7 @@
   gArmSgiPlatformIdDescriptorGuid
   gSgi575AcpiTablesFileGuid
   gSgiClarkAresAcpiTablesFileGuid
+  gSgiClarkHeliosAcpiTablesFileGuid
 
 [FeaturePcd]
   gArmSgiTokenSpaceGuid.PcdVirtioSupported
diff --git a/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Dbg2.aslc 
b/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Dbg2.aslc
new file mode 100644
index 0000000..3970461
--- /dev/null
+++ b/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Dbg2.aslc
@@ -0,0 +1,90 @@
+/** @file
+*  Debug Port Table 2 (DBG2)
+*
+*  Copyright (c) 2018, ARM Limited. All rights reserved.
+*
+*  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
+*  http://opensource.org/licenses/bsd-license.php
+*
+*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR 
IMPLIED.
+*
+**/
+
+#include "SgiAcpiHeader.h"
+#include <Library/AcpiLib.h>
+#include <IndustryStandard/Acpi62.h>
+#include <IndustryStandard/DebugPort2Table.h>
+
+#define SGI_DBG2_NUM_DEBUG_PORTS           1
+#define SGI_DBG2_NUM_GAS                   1
+#define SGI_DBG2_NS_STR_LENGTH             8
+#define SGI_PL011_REGISTER_SPACE           0x1000
+
+#define NAME_STR_UART1     {'C', 'O', 'M', '1', '\0', '\0', '\0', '\0'}
+
+#pragma pack(1)
+
+typedef struct {
+  EFI_ACPI_DBG2_DEBUG_DEVICE_INFORMATION_STRUCT Dbg2Device;
+  EFI_ACPI_6_2_GENERIC_ADDRESS_STRUCTURE        BaseAddressRegister;
+  UINT32                                        AddressSize;
+  UINT8                                         
NameSpaceString[SGI_DBG2_NS_STR_LENGTH];
+} DBG2_DEBUG_DEVICE_INFORMATION;
+
+typedef struct {
+  EFI_ACPI_DEBUG_PORT_2_DESCRIPTION_TABLE       Description;
+  DBG2_DEBUG_DEVICE_INFORMATION                 
Dbg2DeviceInfo[SGI_DBG2_NUM_DEBUG_PORTS];
+} DBG2_TABLE;
+
+#pragma pack()
+
+#define DBG2_DEBUG_PORT_DDI(NumReg, SubType, UartBase, UartAddrLen, 
UartNameStr) {                                  \
+  {                                                                            
                                     \
+    EFI_ACPI_DBG2_DEBUG_DEVICE_INFORMATION_STRUCT_REVISION,         /* UINT8   
  Revision */                        \
+    sizeof (DBG2_DEBUG_DEVICE_INFORMATION),                         /* UINT16  
  Length */                          \
+    NumReg,                                                         /* UINT8   
  NumberofGenericAddressRegisters */ \
+    SGI_DBG2_NS_STR_LENGTH,                                         /* UINT16  
  NameSpaceStringLength */           \
+    OFFSET_OF (DBG2_DEBUG_DEVICE_INFORMATION, NameSpaceString),     /* UINT16  
  NameSpaceStringOffset */           \
+    0,                                                              /* UINT16  
  OemDataLength */                   \
+    0,                                                              /* UINT16  
  OemDataOffset */                   \
+    EFI_ACPI_DBG2_PORT_TYPE_SERIAL,                                 /* UINT16  
  Port Type */                       \
+    SubType,                                                        /* UINT16  
  Port Subtype */                    \
+    { EFI_ACPI_RESERVED_BYTE, EFI_ACPI_RESERVED_BYTE },             /* UINT8   
  Reserved[2] */                     \
+    OFFSET_OF (DBG2_DEBUG_DEVICE_INFORMATION, BaseAddressRegister), /* UINT16  
  BaseAddressRegister Offset */      \
+    OFFSET_OF (DBG2_DEBUG_DEVICE_INFORMATION, AddressSize)          /* UINT16  
  AddressSize Offset */              \
+  },                                                                           
                                     \
+  ARM_GAS32 (UartBase),                            /* 
EFI_ACPI_6_2_GENERIC_ADDRESS_STRUCTURE BaseAddressRegister */ \
+  UartAddrLen,                                     /* UINT32  AddressSize */   
                                     \
+  UartNameStr                                      /* UINT8   
NameSpaceString[MAX_DBG2_NAME_LEN] */                 \
+}
+
+STATIC DBG2_TABLE Dbg2 = {
+  {
+    ARM_ACPI_HEADER (
+      EFI_ACPI_6_2_DEBUG_PORT_2_TABLE_SIGNATURE,
+      DBG2_TABLE,
+      EFI_ACPI_DBG2_DEBUG_DEVICE_INFORMATION_STRUCT_REVISION
+    ),
+    OFFSET_OF (DBG2_TABLE, Dbg2DeviceInfo),
+    SGI_DBG2_NUM_DEBUG_PORTS
+  },
+  {
+    // Kernel Debug Port
+    DBG2_DEBUG_PORT_DDI (
+      SGI_DBG2_NUM_GAS,
+      EFI_ACPI_DBG2_PORT_SUBTYPE_SERIAL_ARM_PL011_UART,
+      FixedPcdGet64 (PcdSerialDbgRegisterBase),
+      SGI_PL011_REGISTER_SPACE,
+      NAME_STR_UART1
+    )
+  }
+};
+
+//
+// Reference the table being generated to prevent the optimizer from removing
+// the data structure from the executable
+//
+VOID* CONST ReferenceAcpiTable = &Dbg2;
diff --git a/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Dsdt.asl 
b/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Dsdt.asl
new file mode 100644
index 0000000..706fd88
--- /dev/null
+++ b/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Dsdt.asl
@@ -0,0 +1,262 @@
+/** @file
+*  Differentiated System Description Table Fields (DSDT)
+*
+*  Copyright (c) 2018, ARM Ltd. All rights reserved.
+*
+*  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
+*  http://opensource.org/licenses/bsd-license.php
+*
+*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR 
IMPLIED.
+*
+**/
+
+#include "SgiPlatform.h"
+#include "SgiAcpiHeader.h"
+
+DefinitionBlock ("DsdtTable.aml", "DSDT", 1, "ARMLTD", "SGI-ClarkH",
+                 EFI_ACPI_ARM_OEM_REVISION) {
+  Scope (_SB) {
+    //
+    // HeliosCores 8X2 Processor declaration
+    //
+    Device (CP00) { // HeliosCore: Cluster 0, Cpu 0, Thread 0
+      Name (_HID, "ACPI0007")
+      Name (_UID, 0)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP01) { // HeliosCore: Cluster 0, Cpu 0, Thread 1
+      Name (_HID, "ACPI0007")
+      Name (_UID, 1)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP02) { // HeliosCore: Cluster 0, Cpu 1, Thread 0
+      Name (_HID, "ACPI0007")
+      Name (_UID, 2)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP03) { // HeliosCore: Cluster 0, Cpu 1, Thread 1
+      Name (_HID, "ACPI0007")
+      Name (_UID, 3)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP04) { // HeliosCore: Cluster 0, Cpu 2, Thread 0
+      Name (_HID, "ACPI0007")
+      Name (_UID, 4)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP05) { // HeliosCore: Cluster 0, Cpu 2, Thread 1
+      Name (_HID, "ACPI0007")
+      Name (_UID, 5)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP06) { // HeliosCore: Cluster 0, Cpu 3, Thread 0
+      Name (_HID, "ACPI0007")
+      Name (_UID, 6)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP07) { // HeliosCore: Cluster 0, Cpu 3, Thread 1
+      Name (_HID, "ACPI0007")
+      Name (_UID, 7)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP08) { // HeliosCore: Cluster 0, Cpu 4, Thread 0
+      Name (_HID, "ACPI0007")
+      Name (_UID, 8)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP09) { // HeliosCore: Cluster 0, Cpu 4, Thread 1
+      Name (_HID, "ACPI0007")
+      Name (_UID, 9)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP10) { // HeliosCore: Cluster 0, Cpu 5, Thread 0
+      Name (_HID, "ACPI0007")
+      Name (_UID, 10)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP11) { // HeliosCore: Cluster 0, Cpu 5, Thread 1
+      Name (_HID, "ACPI0007")
+      Name (_UID, 11)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP12) { // HeliosCore: Cluster 0, Cpu 6, Thread 0
+      Name (_HID, "ACPI0007")
+      Name (_UID, 12)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP13) { // HeliosCore: Cluster 0, Cpu 6, Thread 1
+      Name (_HID, "ACPI0007")
+      Name (_UID, 13)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP14) { // HeliosCore: Cluster 0, Cpu 7, Thread 0
+      Name (_HID, "ACPI0007")
+      Name (_UID, 14)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP15) { // HeliosCore: Cluster 0, Cpu 7, Thread 1
+      Name (_HID, "ACPI0007")
+      Name (_UID, 15)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP16) { // HeliosCore: Cluster 0, Cpu 0, Thread 0
+      Name (_HID, "ACPI0007")
+      Name (_UID, 16)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP17) { // HeliosCore: Cluster 0, Cpu 0, Thread 1
+      Name (_HID, "ACPI0007")
+      Name (_UID, 17)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP18) { // HeliosCore: Cluster 0, Cpu 1, Thread 0
+      Name (_HID, "ACPI0007")
+      Name (_UID, 18)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP19) { // HeliosCore: Cluster 0, Cpu 1, Thread 1
+      Name (_HID, "ACPI0007")
+      Name (_UID, 19)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP20) { // HeliosCore: Cluster 0, Cpu 2, Thread 0
+      Name (_HID, "ACPI0007")
+      Name (_UID, 20)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP21) { // HeliosCore: Cluster 0, Cpu 2, Thread 1
+      Name (_HID, "ACPI0007")
+      Name (_UID, 21)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP22) { // HeliosCore: Cluster 0, Cpu 3, Thread 0
+      Name (_HID, "ACPI0007")
+      Name (_UID, 22)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP23) { // HeliosCore: Cluster 0, Cpu 3, Thread 1
+      Name (_HID, "ACPI0007")
+      Name (_UID, 23)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP24) { // HeliosCore: Cluster 0, Cpu 4, Thread 0
+      Name (_HID, "ACPI0007")
+      Name (_UID, 24)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP25) { // HeliosCore: Cluster 0, Cpu 4, Thread 1
+      Name (_HID, "ACPI0007")
+      Name (_UID, 25)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP26) { // HeliosCore: Cluster 0, Cpu 5, Thread 0
+      Name (_HID, "ACPI0007")
+      Name (_UID, 26)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP27) { // HeliosCore: Cluster 0, Cpu 5, Thread 1
+      Name (_HID, "ACPI0007")
+      Name (_UID, 27)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP28) { // HeliosCore: Cluster 0, Cpu 6, Thread 0
+      Name (_HID, "ACPI0007")
+      Name (_UID, 28)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP29) { // HeliosCore: Cluster 0, Cpu 6, Thread 1
+      Name (_HID, "ACPI0007")
+      Name (_UID, 29)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP30) { // HeliosCore: Cluster 0, Cpu 7, Thread 0
+      Name (_HID, "ACPI0007")
+      Name (_UID, 30)
+      Name (_STA, 0xF)
+    }
+
+    Device (CP31) { // HeliosCore: Cluster 0, Cpu 7, Thread 1
+      Name (_HID, "ACPI0007")
+      Name (_UID, 31)
+      Name (_STA, 0xF)
+    }
+
+    // UART PL011
+    Device (COM0) {
+      Name (_HID, "ARMH0011")
+      Name (_CID, "ARMH0011")
+      Name (_UID, Zero)
+      Name (_STA, 0xF)
+      Name (_CRS, ResourceTemplate() {
+        Memory32Fixed (
+          ReadWrite,
+          FixedPcdGet64 (PcdSerialDbgRegisterBase),
+          0x1000
+        )
+        Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive) { 147 }
+      })
+    }
+
+    // SMSC 91C111
+    Device (ETH0) {
+      Name (_HID, "LNRO0003")
+      Name (_UID, Zero)
+      Name (_STA, 0xF)
+      Name (_CRS, ResourceTemplate() {
+        Memory32Fixed (ReadWrite, 0x18000000, 0x1000)
+        Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive) { 111 }
+      })
+      Name (_DSD, Package() {
+        ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
+        Package () {
+          Package (2) {"reg-io-width", 4 },
+        }
+      })
+    }
+
+    // VIRTIO DISK
+    Device (VR00) {
+      Name (_HID, "LNRO0005")
+      Name (_UID, 0)
+      Name (_CCA, 1)    // mark the device coherent
+
+      Name (_CRS, ResourceTemplate() {
+        Memory32Fixed (ReadWrite, 0x1c130000, 0x10000)
+        Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive) { 202 }
+      })
+    }
+  } // Scope(_SB)
+}
diff --git a/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Fadt.aslc 
b/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Fadt.aslc
new file mode 100644
index 0000000..35b3ec8
--- /dev/null
+++ b/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Fadt.aslc
@@ -0,0 +1,87 @@
+/** @file
+*  Fixed ACPI Description Table (FADT)
+*
+*  Copyright (c) 2018, ARM Limited. All rights reserved.
+*
+*  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
+*  http://opensource.org/licenses/bsd-license.php
+*
+*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR 
IMPLIED.
+*
+**/
+
+#include "SgiAcpiHeader.h"
+#include <Library/AcpiLib.h>
+#include <IndustryStandard/Acpi.h>
+
+STATIC EFI_ACPI_6_2_FIXED_ACPI_DESCRIPTION_TABLE Fadt = {
+  ARM_ACPI_HEADER (
+    EFI_ACPI_6_2_FIXED_ACPI_DESCRIPTION_TABLE_SIGNATURE,
+    EFI_ACPI_6_2_FIXED_ACPI_DESCRIPTION_TABLE,
+    EFI_ACPI_6_2_FIXED_ACPI_DESCRIPTION_TABLE_REVISION
+  ),
+  0,                                                                        // 
UINT32     FirmwareCtrl
+  0,                                                                        // 
UINT32     Dsdt
+  EFI_ACPI_RESERVED_BYTE,                                                   // 
UINT8      Reserved0
+  EFI_ACPI_6_2_PM_PROFILE_ENTERPRISE_SERVER,                                // 
UINT8      PreferredPmProfile
+  0,                                                                        // 
UINT16     SciInt
+  0,                                                                        // 
UINT32     SmiCmd
+  0,                                                                        // 
UINT8      AcpiEnable
+  0,                                                                        // 
UINT8      AcpiDisable
+  0,                                                                        // 
UINT8      S4BiosReq
+  0,                                                                        // 
UINT8      PstateCnt
+  0,                                                                        // 
UINT32     Pm1aEvtBlk
+  0,                                                                        // 
UINT32     Pm1bEvtBlk
+  0,                                                                        // 
UINT32     Pm1aCntBlk
+  0,                                                                        // 
UINT32     Pm1bCntBlk
+  0,                                                                        // 
UINT32     Pm2CntBlk
+  0,                                                                        // 
UINT32     PmTmrBlk
+  0,                                                                        // 
UINT32     Gpe0Blk
+  0,                                                                        // 
UINT32     Gpe1Blk
+  0,                                                                        // 
UINT8      Pm1EvtLen
+  0,                                                                        // 
UINT8      Pm1CntLen
+  0,                                                                        // 
UINT8      Pm2CntLen
+  0,                                                                        // 
UINT8      PmTmrLen
+  0,                                                                        // 
UINT8      Gpe0BlkLen
+  0,                                                                        // 
UINT8      Gpe1BlkLen
+  0,                                                                        // 
UINT8      Gpe1Base
+  0,                                                                        // 
UINT8      CstCnt
+  0,                                                                        // 
UINT16     PLvl2Lat
+  0,                                                                        // 
UINT16     PLvl3Lat
+  0,                                                                        // 
UINT16     FlushSize
+  0,                                                                        // 
UINT16     FlushStride
+  0,                                                                        // 
UINT8      DutyOffset
+  0,                                                                        // 
UINT8      DutyWidth
+  0,                                                                        // 
UINT8      DayAlrm
+  0,                                                                        // 
UINT8      MonAlrm
+  0,                                                                        // 
UINT8      Century
+  0,                                                                        // 
UINT16     IaPcBootArch
+  0,                                                                        // 
UINT8      Reserved1
+  EFI_ACPI_6_2_HW_REDUCED_ACPI | EFI_ACPI_6_2_LOW_POWER_S0_IDLE_CAPABLE,    // 
UINT32     Flags
+  NULL_GAS,                                                                 // 
GAS        ResetReg
+  0,                                                                        // 
UINT8      ResetValue
+  EFI_ACPI_6_2_ARM_PSCI_COMPLIANT,                                          // 
UINT16     ArmBootArchFlags
+  EFI_ACPI_6_2_FIXED_ACPI_DESCRIPTION_TABLE_MINOR_REVISION,                 // 
UINT8      MinorRevision
+  0,                                                                        // 
UINT64     XFirmwareCtrl
+  0,                                                                        // 
UINT64     XDsdt
+  NULL_GAS,                                                                 // 
GAS        XPm1aEvtBlk
+  NULL_GAS,                                                                 // 
GAS        XPm1bEvtBlk
+  NULL_GAS,                                                                 // 
GAS        XPm1aCntBlk
+  NULL_GAS,                                                                 // 
GAS        XPm1bCntBlk
+  NULL_GAS,                                                                 // 
GAS        XPm2CntBlk
+  NULL_GAS,                                                                 // 
GAS        XPmTmrBlk
+  NULL_GAS,                                                                 // 
GAS        XGpe0Blk
+  NULL_GAS,                                                                 // 
GAS        XGpe1Blk
+  NULL_GAS,                                                                 // 
GAS        SleepControlReg
+  NULL_GAS,                                                                 // 
GAS        SleepStatusReg
+  0                                                                         // 
UINT64     HypervisorVendorIdentity;
+};
+
+//
+// Reference the table being generated to prevent the optimizer from removing 
the
+// data structure from the executable
+//
+VOID* CONST ReferenceAcpiTable = &Fadt;
diff --git a/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Gtdt.aslc 
b/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Gtdt.aslc
new file mode 100644
index 0000000..d7105f3
--- /dev/null
+++ b/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Gtdt.aslc
@@ -0,0 +1,152 @@
+/** @file
+*  Generic Timer Description Table (GTDT)
+*
+*  Copyright (c) 2018, ARM Limited. All rights reserved.
+*
+*  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
+*  http://opensource.org/licenses/bsd-license.php
+*
+*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR 
IMPLIED.
+*
+**/
+
+#include "SgiAcpiHeader.h"
+#include <Library/AcpiLib.h>
+#include <Library/PcdLib.h>
+#include <IndustryStandard/Acpi62.h>
+
+#define SGI_PLATFORM_WATCHDOG_COUNT       2
+#define SGI_PLATFORM_TIMER_COUNT          (SGI_PLATFORM_WATCHDOG_COUNT + 1)
+#define SGI_TIMER_FRAMES_COUNT            2
+
+#define SYSTEM_TIMER_BASE_ADDRESS         0xFFFFFFFFFFFFFFFF
+#define GTDT_GLOBAL_FLAGS                 0
+#define GTDT_GTIMER_FLAGS                 
EFI_ACPI_6_2_GTDT_TIMER_FLAG_TIMER_INTERRUPT_POLARITY
+
+#define SGI_GT_BLOCK_CTL_BASE             0x2A810000
+#define SGI_GT_BLOCK_FRAME1_CTL_BASE      0x2A820000
+#define SGI_GT_BLOCK_FRAME1_CTL_EL0_BASE  0xFFFFFFFFFFFFFFFF
+#define SGI_GT_BLOCK_FRAME1_GSIV          0x5B
+
+#define SGI_GT_BLOCK_FRAME0_CTL_BASE      0x2A830000
+#define SGI_GT_BLOCK_FRAME0_CTL_EL0_BASE  0xFFFFFFFFFFFFFFFF
+#define SGI_GT_BLOCK_FRAME0_GSIV          0x5C
+
+#define SGI_GTX_TIMER_FLAGS               0
+#define GTX_TIMER_SECURE                  
EFI_ACPI_6_2_GTDT_GT_BLOCK_COMMON_FLAG_SECURE_TIMER
+#define GTX_TIMER_NON_SECURE              0
+#define GTX_TIMER_SAVE_CONTEXT            
EFI_ACPI_6_2_GTDT_GT_BLOCK_COMMON_FLAG_ALWAYS_ON_CAPABILITY
+#define SGI_GTX_COMMON_FLAGS_S            (GTX_TIMER_SAVE_CONTEXT | 
GTX_TIMER_SECURE)
+#define SGI_GTX_COMMON_FLAGS_NS           (GTX_TIMER_SAVE_CONTEXT | 
GTX_TIMER_NON_SECURE)
+
+#define EFI_ACPI_6_2_SBSA_GENERIC_WATCHDOG_STRUCTURE_INIT(        \
+  RefreshFramePhysicalAddress, ControlFramePhysicalAddress,       \
+  WatchdogTimerGSIV, WatchdogTimerFlags)                          \
+  {                                                               \
+    EFI_ACPI_6_2_GTDT_SBSA_GENERIC_WATCHDOG,                      \
+    sizeof (EFI_ACPI_6_2_GTDT_SBSA_GENERIC_WATCHDOG_STRUCTURE),   \
+    EFI_ACPI_RESERVED_WORD,                                       \
+    RefreshFramePhysicalAddress,                                  \
+    ControlFramePhysicalAddress,                                  \
+    WatchdogTimerGSIV,                                            \
+    WatchdogTimerFlags                                            \
+  }
+
+#pragma pack (1)
+
+typedef struct {
+  EFI_ACPI_6_2_GENERIC_TIMER_DESCRIPTION_TABLE       Gtdt;
+  EFI_ACPI_6_2_GTDT_GT_BLOCK_STRUCTURE               GtBlock;
+  EFI_ACPI_6_2_GTDT_GT_BLOCK_TIMER_STRUCTURE         
Frames[SGI_TIMER_FRAMES_COUNT];
+  EFI_ACPI_6_2_GTDT_SBSA_GENERIC_WATCHDOG_STRUCTURE  
Watchdogs[SGI_PLATFORM_WATCHDOG_COUNT];
+} EFI_ACPI_6_2_GENERIC_TIMER_DESCRIPTION_TABLES;
+
+#pragma pack ()
+
+STATIC EFI_ACPI_6_2_GENERIC_TIMER_DESCRIPTION_TABLES Gtdt = {
+  {
+    ARM_ACPI_HEADER (
+      EFI_ACPI_6_2_GENERIC_TIMER_DESCRIPTION_TABLE_SIGNATURE,
+      EFI_ACPI_6_2_GENERIC_TIMER_DESCRIPTION_TABLES,
+      EFI_ACPI_6_2_GENERIC_TIMER_DESCRIPTION_TABLE_REVISION
+    ),
+    SYSTEM_TIMER_BASE_ADDRESS,                    // UINT64  PhysicalAddress
+    0,                                            // UINT32  Reserved
+    FixedPcdGet32 (PcdArmArchTimerSecIntrNum),    // UINT32  SecurePL1TimerGSIV
+    GTDT_GTIMER_FLAGS,                            // UINT32  
SecurePL1TimerFlags
+    FixedPcdGet32 (PcdArmArchTimerIntrNum),       // UINT32  
NonSecurePL1TimerGSIV
+    GTDT_GTIMER_FLAGS,                            // UINT32  
NonSecurePL1TimerFlags
+    FixedPcdGet32 (PcdArmArchTimerVirtIntrNum),   // UINT32  VirtualTimerGSIV
+    GTDT_GTIMER_FLAGS,                            // UINT32  VirtualTimerFlags
+    FixedPcdGet32 (PcdArmArchTimerHypIntrNum),    // UINT32  
NonSecurePL2TimerGSIV
+    GTDT_GTIMER_FLAGS,                            // UINT32  
NonSecurePL2TimerFlags
+    0xFFFFFFFFFFFFFFFF,                           // UINT64  
CntReadBasePhysicalAddress
+    SGI_PLATFORM_TIMER_COUNT,                     // UINT32  PlatformTimerCount
+    sizeof (EFI_ACPI_6_2_GENERIC_TIMER_DESCRIPTION_TABLE) // UINT32 
PlatfromTimerOffset
+  },
+  {
+    EFI_ACPI_6_2_GTDT_GT_BLOCK,                           // UINT8 Type
+    sizeof (EFI_ACPI_6_2_GTDT_GT_BLOCK_STRUCTURE) +       // UINT16 Length
+    sizeof (EFI_ACPI_6_2_GTDT_GT_BLOCK_TIMER_STRUCTURE) *
+    SGI_TIMER_FRAMES_COUNT,
+    EFI_ACPI_RESERVED_BYTE,                               // UINT8 Reserved
+    SGI_GT_BLOCK_CTL_BASE,                                // UINT64 CntCtlBase
+    SGI_TIMER_FRAMES_COUNT,                               // UINT32 
GTBlockTimerCount
+    sizeof (EFI_ACPI_6_2_GTDT_GT_BLOCK_STRUCTURE)         // UINT32 
GTBlockTimerOffset
+  },
+  {
+    {
+      0,                                     // UINT8 GTFrameNumber
+      {
+        EFI_ACPI_RESERVED_BYTE,
+        EFI_ACPI_RESERVED_BYTE,
+        EFI_ACPI_RESERVED_BYTE
+      },                                     // UINT8 Reserved[3]
+      SGI_GT_BLOCK_FRAME0_CTL_BASE,          // UINT64 CntBaseX
+      SGI_GT_BLOCK_FRAME0_CTL_EL0_BASE,      // UINT64 CntEL0BaseX
+      SGI_GT_BLOCK_FRAME0_GSIV,              // UINT32 GTxPhysicalTimerGSIV
+      SGI_GTX_TIMER_FLAGS,                   // UINT32 GTxPhysicalTimerFlags
+      0,                                     // UINT32 GTxVirtualTimerGSIV
+      0,                                     // UINT32 GTxVirtualTimerFlags
+      SGI_GTX_COMMON_FLAGS_NS                // UINT32 GTxCommonFlags
+    },
+    {
+      1,                                     // UINT8 GTFrameNumber
+      {
+        EFI_ACPI_RESERVED_BYTE,
+        EFI_ACPI_RESERVED_BYTE,
+        EFI_ACPI_RESERVED_BYTE
+      },                                     // UINT8 Reserved[3]
+      SGI_GT_BLOCK_FRAME1_CTL_BASE,          // UINT64 CntBaseX
+      SGI_GT_BLOCK_FRAME1_CTL_EL0_BASE,      // UINT64 CntEL0BaseX
+      SGI_GT_BLOCK_FRAME1_GSIV,              // UINT32 GTxPhysicalTimerGSIV
+      SGI_GTX_TIMER_FLAGS,                   // UINT32 GTxPhysicalTimerFlags
+      0,                                     // UINT32 GTxVirtualTimerGSIV
+      0,                                     // UINT32 GTxVirtualTimerFlags
+      SGI_GTX_COMMON_FLAGS_S                 // UINT32 GTxCommonFlags
+    }
+  },
+  {
+    EFI_ACPI_6_2_SBSA_GENERIC_WATCHDOG_STRUCTURE_INIT (
+      FixedPcdGet32 (PcdGenericWatchdogRefreshBase),
+      FixedPcdGet32 (PcdGenericWatchdogControlBase),
+      93,
+      0
+    ),
+    EFI_ACPI_6_2_SBSA_GENERIC_WATCHDOG_STRUCTURE_INIT (
+      FixedPcdGet32 (PcdGenericWatchdogRefreshBase),
+      FixedPcdGet32 (PcdGenericWatchdogControlBase),
+      94,
+      EFI_ACPI_6_2_GTDT_SBSA_GENERIC_WATCHDOG_FLAG_SECURE_TIMER
+    )
+  }
+};
+
+//
+// Reference the table being generated to prevent the optimizer from removing 
the
+// data structure from the executable
+//
+VOID* CONST ReferenceAcpiTable = &Gtdt;
diff --git a/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Iort.aslc 
b/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Iort.aslc
new file mode 100644
index 0000000..47c095f
--- /dev/null
+++ b/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Iort.aslc
@@ -0,0 +1,106 @@
+/** @file
+*  I/O Remapping Table (Iort)
+*
+*  Copyright (c) 2018, ARM Ltd. All rights reserved.
+*
+*  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
+*  http://opensource.org/licenses/bsd-license.php
+*
+*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR 
IMPLIED.
+*
+**/
+
+#include <IndustryStandard/Acpi.h>
+#include <IndustryStandard/Acpi62.h>
+#include <IndustryStandard/IoRemappingTable.h>
+#include "SgiAcpiHeader.h"
+
+#pragma pack(1)
+
+typedef struct
+{
+  EFI_ACPI_6_0_IO_REMAPPING_ITS_NODE       ItsNode;
+  UINT32                                   ItsIdentifiers;
+} ARM_EFI_ACPI_6_0_IO_REMAPPING_ITS_NODE;
+
+typedef struct
+{
+  EFI_ACPI_6_0_IO_REMAPPING_RC_NODE        RcNode;
+  EFI_ACPI_6_0_IO_REMAPPING_ID_TABLE       RcIdMap;
+} ARM_EFI_ACPI_6_0_IO_REMAPPING_RC_NODE;
+
+typedef struct
+{
+  EFI_ACPI_6_0_IO_REMAPPING_TABLE          Header;
+  ARM_EFI_ACPI_6_0_IO_REMAPPING_ITS_NODE   ItsNode;
+  ARM_EFI_ACPI_6_0_IO_REMAPPING_RC_NODE    RcNode;
+} ARM_EFI_ACPI_6_0_IO_REMAPPING_TABLE;
+
+#pragma pack ()
+
+ARM_EFI_ACPI_6_0_IO_REMAPPING_TABLE Iort =
+{
+  // EFI_ACPI_6_0_IO_REMAPPING_TABLE
+  {
+     ARM_ACPI_HEADER  // EFI_ACPI_DESCRIPTION_HEADER
+     (
+       EFI_ACPI_6_2_IO_REMAPPING_TABLE_SIGNATURE,
+       ARM_EFI_ACPI_6_0_IO_REMAPPING_TABLE,
+       EFI_ACPI_IO_REMAPPING_TABLE_REVISION
+     ),
+     2,  // NumNodes
+     sizeof (EFI_ACPI_6_0_IO_REMAPPING_TABLE),  // NodeOffset
+     0  // Reserved
+  },
+  // ARM_EFI_ACPI_6_0_IO_REMAPPING_ITS_NODE
+  {
+    // EFI_ACPI_6_0_IO_REMAPPING_ITS_NODE
+    {
+      // EFI_ACPI_6_0_IO_REMAPPING_NODE
+      {
+        EFI_ACPI_IORT_TYPE_ITS_GROUP,  // Type
+        sizeof (ARM_EFI_ACPI_6_0_IO_REMAPPING_ITS_NODE), // Length
+        0,  // Revision
+        0,  // Reserved
+        0,  // NumIdMappings
+        0   // IdReference
+      },
+      1     // GIC ITS Identifiers
+    },
+    0
+  },
+  // ARM_EFI_ACPI_6_0_IO_REMAPPING_RC_NODE
+  {
+    // EFI_ACPI_6_0_IO_REMAPPING_RC_NODE
+    {
+      // EFI_ACPI_6_0_IO_REMAPPING_NODE
+      {
+        EFI_ACPI_IORT_TYPE_ROOT_COMPLEX,  // Type
+        sizeof (ARM_EFI_ACPI_6_0_IO_REMAPPING_RC_NODE),  // Length
+        0,  // Revision
+        0,  // Reserved
+        1,  // NumIdMappings
+        OFFSET_OF (ARM_EFI_ACPI_6_0_IO_REMAPPING_RC_NODE, RcIdMap),
+      },
+      1,  // CacheCoherent
+      0,  // AllocationHints
+      0,  // Reserved
+      0,  // MemoryAccessFlags
+      EFI_ACPI_IORT_ROOT_COMPLEX_ATS_UNSUPPORTED,  // AtsAttribute
+      0x0                                          // PciSegmentNumber
+    },
+    // EFI_ACPI_6_0_IO_REMAPPING_ID_TABLE
+    {
+      0x0000,  // InputBase
+      0xffff,  // NumIds
+      0x0000,  // OutputBase
+      OFFSET_OF (ARM_EFI_ACPI_6_0_IO_REMAPPING_TABLE, ItsNode),
+      0        // Flags
+    }
+  }
+};
+
+VOID* CONST ReferenceAcpiTable = &Iort;
diff --git a/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Madt.aslc 
b/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Madt.aslc
new file mode 100644
index 0000000..0d66d8a
--- /dev/null
+++ b/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Madt.aslc
@@ -0,0 +1,266 @@
+/** @file
+*  Multiple APIC Description Table (MADT)
+*
+*  Copyright (c) 2018, ARM Limited. All rights reserved.
+*
+*  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
+*  http://opensource.org/licenses/bsd-license.php
+*
+*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR 
IMPLIED.
+*
+**/
+
+#include "SgiPlatform.h"
+#include "SgiAcpiHeader.h"
+#include <Library/AcpiLib.h>
+#include <Library/ArmLib.h>
+#include <Library/PcdLib.h>
+#include <IndustryStandard/Acpi.h>
+
+// EFI_ACPI_6_2_GIC_STRUCTURE
+#define EFI_ACPI_6_2_GICC_STRUCTURE_INIT(GicId, AcpiCpuUid, Mpidr, Flags,      
\
+  PmuIrq, GicBase, GicVBase, GicHBase, GsivId, GicRBase, Efficiency)           
\
+  {                                                                            
\
+    EFI_ACPI_6_2_GIC,                     /* Type */                           
\
+    sizeof (EFI_ACPI_6_2_GIC_STRUCTURE),  /* Length */                         
\
+    EFI_ACPI_RESERVED_WORD,               /* Reserved */                       
\
+    GicId,                                /* CPUInterfaceNumber */             
\
+    AcpiCpuUid,                           /* AcpiProcessorUid */               
\
+    Flags,                                /* Flags */                          
\
+    0,                                    /* ParkingProtocolVersion */         
\
+    PmuIrq,                               /* PerformanceInterruptGsiv */       
\
+    0,                                    /* ParkedAddress */                  
\
+    GicBase,                              /* PhysicalBaseAddress */            
\
+    GicVBase,                             /* GICV */                           
\
+    GicHBase,                             /* GICH */                           
\
+    GsivId,                               /* VGICMaintenanceInterrupt */       
\
+    GicRBase,                             /* GICRBaseAddress */                
\
+    Mpidr,                                /* MPIDR */                          
\
+    Efficiency,                           /* ProcessorPowerEfficiencyClass */  
\
+    {                                                                          
\
+      EFI_ACPI_RESERVED_BYTE,             /* Reserved2[0] */                   
\
+      EFI_ACPI_RESERVED_BYTE,             /* Reserved2[1] */                   
\
+      EFI_ACPI_RESERVED_BYTE              /* Reserved2[2] */                   
\
+    }                                                                          
\
+  }
+
+// EFI_ACPI_6_2_GIC_DISTRIBUTOR_STRUCTURE
+#define EFI_ACPI_6_2_GIC_DISTRIBUTOR_INIT(GicDistHwId, GicDistBase,            
\
+  GicDistVector, GicVersion)                                                   
\
+  {                                                                            
\
+    EFI_ACPI_6_2_GICD,                    /* Type */                           
\
+    sizeof (EFI_ACPI_6_2_GIC_DISTRIBUTOR_STRUCTURE),                           
\
+    EFI_ACPI_RESERVED_WORD,               /* Reserved1 */                      
\
+    GicDistHwId,                          /* GicId */                          
\
+    GicDistBase,                          /* PhysicalBaseAddress */            
\
+    GicDistVector,                        /* SystemVectorBase */               
\
+    GicVersion,                           /* GicVersion */                     
\
+    {                                                                          
\
+      EFI_ACPI_RESERVED_BYTE,             /* Reserved2[0] */                   
\
+      EFI_ACPI_RESERVED_BYTE,             /* Reserved2[1] */                   
\
+      EFI_ACPI_RESERVED_BYTE              /* Reserved2[2] */                   
\
+    }                                                                          
\
+  }
+
+// EFI_ACPI_6_2_GICR_STRUCTURE
+#define EFI_ACPI_6_2_GIC_REDISTRIBUTOR_INIT(RedisRegionAddr, RedisDiscLength)  
\
+  {                                                                            
\
+    EFI_ACPI_6_2_GICR,                    /* Type */                           
\
+    sizeof (EFI_ACPI_6_2_GICR_STRUCTURE), /* Length */                         
\
+    EFI_ACPI_RESERVED_WORD,               /* Reserved */                       
\
+    RedisRegionAddr,                      /* DiscoveryRangeBaseAddress */      
\
+    RedisDiscLength                       /* DiscoveryRangeLength */           
\
+  }
+
+// EFI_ACPI_6_2_GIC_ITS_STRUCTURE
+#define EFI_ACPI_6_2_GIC_ITS_INIT(GicItsId, GicItsBase)                        
\
+  {                                                                            
\
+    EFI_ACPI_6_2_GIC_ITS,                 /* Type */                           
\
+    sizeof (EFI_ACPI_6_2_GIC_ITS_STRUCTURE),                                   
\
+    EFI_ACPI_RESERVED_WORD,               /* Reserved */                       
\
+    GicItsId,                             /* GicItsId */                       
\
+    GicItsBase,                           /* PhysicalBaseAddress */            
\
+    EFI_ACPI_RESERVED_DWORD               /* DiscoveryRangeLength */           
\
+  }
+
+// Multiple APIC Description Table
+#pragma pack (1)
+
+typedef struct {
+  EFI_ACPI_6_2_MULTIPLE_APIC_DESCRIPTION_TABLE_HEADER   Header;
+  EFI_ACPI_6_2_GIC_STRUCTURE                            GicInterfaces[32];
+  EFI_ACPI_6_2_GIC_DISTRIBUTOR_STRUCTURE                GicDistributor;
+  EFI_ACPI_6_2_GICR_STRUCTURE                           GicRedistributor;
+  EFI_ACPI_6_2_GIC_ITS_STRUCTURE                        GicIts;
+} EFI_ACPI_6_2_MULTIPLE_APIC_DESCRIPTION_TABLE;
+
+#pragma pack ()
+
+STATIC EFI_ACPI_6_2_MULTIPLE_APIC_DESCRIPTION_TABLE Madt = {
+  {
+    ARM_ACPI_HEADER (
+      EFI_ACPI_6_2_MULTIPLE_APIC_DESCRIPTION_TABLE_SIGNATURE,
+      EFI_ACPI_6_2_MULTIPLE_APIC_DESCRIPTION_TABLE,
+      EFI_ACPI_6_2_MULTIPLE_APIC_DESCRIPTION_TABLE_REVISION
+    ),
+    // MADT specific fields
+    0, // LocalApicAddress
+    0  // Flags
+  },
+  {
+    // Format: EFI_ACPI_6_2_GICC_STRUCTURE_INIT(GicId, AcpiCpuUid, Mpidr, 
Flags,
+    //                                          PmuIrq, GicBase, GicVBase,
+    //                                          GicHBase, GsivId, GicRBase,
+    //                                          Efficiency)
+    // Note: The GIC Structure of the primary CPU must be the first entry
+    // (see note in 5.2.12.14 GICC Structure of ACPI v6.2).
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-0 Thread-0
+      0, 0, GET_MPID(0x0, 0x0), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-1 Thread-1
+      0, 1, GET_MPID(0x0, 0x1), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-1 Thread-0
+      0, 2, GET_MPID(0x0, 0x100), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-1 Thread-1
+      0, 3, GET_MPID(0x0, 0x101), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-2 Thread-0
+      0, 4, GET_MPID(0x0, 0x200), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-2 Thread-1
+      0, 5, GET_MPID(0x0, 0x201), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-3 Thread-0
+      0, 6, GET_MPID(0x0, 0x300), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-3 Thread-1
+      0, 7, GET_MPID(0x0, 0x301), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-4 Thread-0
+      0, 8, GET_MPID(0x0, 0x400), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-4 Thread-1
+      0, 9, GET_MPID(0x0, 0x401), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-5 Thread-0
+      0, 10, GET_MPID(0x0, 0x500), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-5 Thread-1
+      0, 11, GET_MPID(0x0, 0x501), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-6 Thread-0
+      0, 12, GET_MPID(0x0, 0x600), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-6 Thread-1
+      0, 13, GET_MPID(0x0, 0x601), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-7 Thread-0
+      0, 14, GET_MPID(0x0, 0x700), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-7 Thread-1
+      0, 15, GET_MPID(0x0, 0x701), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+
+    //Cluster 1
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-0 Thread-0
+      0, 16, GET_MPID(0x100, 0x0), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-1 Thread-1
+      0, 17, GET_MPID(0x100, 0x1), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-1 Thread-0
+      0, 18, GET_MPID(0x100, 0x100), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-1 Thread-1
+      0, 19, GET_MPID(0x100, 0x101), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-2 Thread-0
+      0, 20, GET_MPID(0x100, 0x200), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-2 Thread-1
+      0, 21, GET_MPID(0x100, 0x201), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-3 Thread-0
+      0, 22, GET_MPID(0x100, 0x300), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-3 Thread-1
+      0, 23, GET_MPID(0x100, 0x301), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-4 Thread-0
+      0, 24, GET_MPID(0x100, 0x400), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-4 Thread-1
+      0, 25, GET_MPID(0x100, 0x401), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-5 Thread-0
+      0, 26, GET_MPID(0x100, 0x500), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-5 Thread-1
+      0, 27, GET_MPID(0x100, 0x501), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-6 Thread-0
+      0, 28, GET_MPID(0x100, 0x600), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-6 Thread-1
+      0, 29, GET_MPID(0x100, 0x601), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-7 Thread-0
+      0, 30, GET_MPID(0x100, 0x700), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+    EFI_ACPI_6_2_GICC_STRUCTURE_INIT( // Core-7 Thread-1
+      0, 31, GET_MPID(0x100, 0x701), EFI_ACPI_6_2_GIC_ENABLED, 23,
+      FixedPcdGet32 (PcdGicDistributorBase),
+      0x2c020000, 0x2c010000, 25, 0 /* GicRBase */, 0 /* Efficiency */),
+  },
+  // GIC Distributor Entry
+  EFI_ACPI_6_2_GIC_DISTRIBUTOR_INIT(0, FixedPcdGet32 (PcdGicDistributorBase),
+                                    0, 3),
+  // GIC Redistributor
+  EFI_ACPI_6_2_GIC_REDISTRIBUTOR_INIT(FixedPcdGet32 (PcdGicRedistributorsBase),
+                                      SIZE_8MB),
+  // GIC ITS
+  EFI_ACPI_6_2_GIC_ITS_INIT(0, 0x30040000)
+};
+
+//
+// Reference the table being generated to prevent the optimizer from removing
+// the data structure from the executable
+//
+VOID* CONST ReferenceAcpiTable = &Madt;
diff --git a/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Mcfg.aslc 
b/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Mcfg.aslc
new file mode 100644
index 0000000..b711c72
--- /dev/null
+++ b/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Mcfg.aslc
@@ -0,0 +1,61 @@
+/** @file
+*  Memory mapped configuration space base address description table (MCFG)
+*
+*  Copyright (c) 2018, ARM Ltd. All rights reserved.
+*
+*  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
+*  http://opensource.org/licenses/bsd-license.php
+*
+*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR 
IMPLIED.
+*
+**/
+
+#include <IndustryStandard/Acpi62.h>
+#include <IndustryStandard/MemoryMappedConfigurationSpaceAccessTable.h>
+#include <Library/PcdLib.h>
+#include "SgiAcpiHeader.h"
+#include "SgiPlatform.h"
+
+#include <Library/AcpiLib.h>
+#include <Library/ArmLib.h>
+#include <IndustryStandard/Acpi.h>
+
+#pragma pack(1)
+
+typedef struct
+{
+  EFI_ACPI_MEMORY_MAPPED_CONFIGURATION_BASE_ADDRESS_TABLE_HEADER Header;
+  
EFI_ACPI_MEMORY_MAPPED_ENHANCED_CONFIGURATION_SPACE_BASE_ADDRESS_ALLOCATION_STRUCTURE
 Structure[1];
+} EFI_ACPI_PCI_MEMORY_MAPPED_CONFIGURATION_SPACE_ACCESS_DESCRIPTION_TABLE;
+
+#pragma pack()
+
+EFI_ACPI_PCI_MEMORY_MAPPED_CONFIGURATION_SPACE_ACCESS_DESCRIPTION_TABLE Mcfg = 
{
+  {
+    ARM_ACPI_HEADER (
+      
EFI_ACPI_6_2_PCI_EXPRESS_MEMORY_MAPPED_CONFIGURATION_SPACE_BASE_ADDRESS_DESCRIPTION_TABLE_SIGNATURE,
+      EFI_ACPI_PCI_MEMORY_MAPPED_CONFIGURATION_SPACE_ACCESS_DESCRIPTION_TABLE,
+      EFI_ACPI_MEMORY_MAPPED_CONFIGURATION_SPACE_ACCESS_TABLE_REVISION
+    ),
+    EFI_ACPI_RESERVED_QWORD  // Reserved
+  },
+  {
+    // PCIe ECAM
+    {
+      FixedPcdGet64 (PcdPciExpressBaseAddress),             // Base Address
+      0x0,                                                  // Segment Group 
Number
+      FixedPcdGet32 (PcdPciBusMin),                         // Start Bus Number
+      FixedPcdGet32 (PcdPciBusMax),                         // End Bus Number
+      0x00000000                                            // Reserved
+    }
+  }
+};
+
+//
+// Reference the table being generated to prevent the optimizer from removing 
the
+// data structure from the executable
+//
+VOID* CONST ReferenceAcpiTable = &Mcfg;
diff --git a/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Spcr.aslc 
b/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Spcr.aslc
new file mode 100644
index 0000000..0aa1c3e
--- /dev/null
+++ b/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Spcr.aslc
@@ -0,0 +1,77 @@
+/** @file
+*  Serial Port Console Redirection Table (SPCR)
+*
+*  Copyright (c) 2018, ARM Limited. All rights reserved.
+*
+*  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
+*  http://opensource.org/licenses/bsd-license.php
+*
+*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR 
IMPLIED.
+*
+**/
+
+#include "SgiAcpiHeader.h"
+#include <Library/AcpiLib.h>
+#include <IndustryStandard/Acpi62.h>
+#include <IndustryStandard/SerialPortConsoleRedirectionTable.h>
+
+STATIC EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE Spcr = {
+  ARM_ACPI_HEADER (
+    EFI_ACPI_6_2_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_SIGNATURE,
+    EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE,
+    EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_REVISION
+  ),
+  // UINT8                                   InterfaceType;
+  EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_INTERFACE_TYPE_ARM_PL011_UART,
+  // UINT8                                   Reserved1[3];
+  {
+    EFI_ACPI_RESERVED_BYTE,
+    EFI_ACPI_RESERVED_BYTE,
+    EFI_ACPI_RESERVED_BYTE
+  },
+  // EFI_ACPI_6_2_GENERIC_ADDRESS_STRUCTURE  BaseAddress;
+  ARM_GAS32 (FixedPcdGet64 (PcdSerialDbgRegisterBase)),
+  // UINT8                                   InterruptType;
+  EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_INTERRUPT_TYPE_GIC,
+  // UINT8                                   Irq;
+  0,
+  // UINT32                                  GlobalSystemInterrupt;
+  FixedPcdGet32 (PL011UartInterrupt),
+  // UINT8                                   BaudRate;
+  EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_BAUD_RATE_115200,
+  // UINT8                                   Parity;
+  EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_PARITY_NO_PARITY,
+  // UINT8                                   StopBits;
+  EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_STOP_BITS_1,
+  // UINT8                                   FlowControl;
+  0,
+  // UINT8                                   TerminalType;
+  EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_TERMINAL_TYPE_ANSI,
+  // UINT8                                   Reserved2;
+  EFI_ACPI_RESERVED_BYTE,
+  // UINT16                                  PciDeviceId;
+  0xFFFF,
+  // UINT16                                  PciVendorId;
+  0xFFFF,
+  // UINT8                                   PciBusNumber;
+  0x00,
+  // UINT8                                   PciDeviceNumber;
+  0x00,
+  // UINT8                                   PciFunctionNumber;
+  0x00,
+  // UINT32                                  PciFlags;
+  0x00000000,
+  // UINT8                                   PciSegment;
+  0x00,
+  // UINT32                                  Reserved3;
+  EFI_ACPI_RESERVED_DWORD
+};
+
+//
+// Reference the table being generated to prevent the optimizer from removing 
the
+// data structure from the executable
+//
+VOID* CONST ReferenceAcpiTable = &Spcr;
diff --git a/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Ssdt.asl 
b/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Ssdt.asl
new file mode 100644
index 0000000..b6c5b2c
--- /dev/null
+++ b/Platform/ARM/SgiPkg/AcpiTables/SgiClarkH/Ssdt.asl
@@ -0,0 +1,95 @@
+/** @file
+*  Secondary System Description Table (SSDT)
+*
+*  Copyright (c) 2018, ARM Limited. All rights reserved.
+*
+*  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
+*  http://opensource.org/licenses/bsd-license.php
+*
+*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR 
IMPLIED.
+*
+**/
+
+#include "SgiAcpiHeader.h"
+
+DefinitionBlock ("SsdtPci.aml", "SSDT", 1, "ARMLTD", "SGI-ClarkH",
+                 EFI_ACPI_ARM_OEM_REVISION)
+{
+  Scope (_SB) {
+    // PCI Root Complex
+    Device (PCI0) {
+      Name (_HID, EISAID("PNP0A08")) // PCI Express Root Bridge
+      Name (_CID, EISAID("PNP0A03")) // Compatible PCI Root Bridge
+      Name (_SEG, Zero)              // PCI Segment Group number
+      Name (_BBN, Zero)              // PCI Base Bus Number
+      Name (_CCA, 1)                 // Cache Coherency Attribute
+
+      // Root complex resources
+      Method (_CRS, 0, Serialized) {
+        Name (RBUF, ResourceTemplate () {
+          WordBusNumber (      // Bus numbers assigned to this root
+            ResourceProducer,
+            MinFixed,
+            MaxFixed,
+            PosDecode,
+            0,                 // AddressGranularity
+            0,                 // AddressMinimum - Minimum Bus Number
+            255,               // AddressMaximum - Maximum Bus Number
+            0,                 // AddressTranslation - Set to 0
+            256                // RangeLength - Number of Busses
+          )
+
+          DWordMemory (        // 32-bit BAR Windows
+            ResourceProducer,
+            PosDecode,
+            MinFixed,
+            MaxFixed,
+            Cacheable,
+            ReadWrite,
+            0x00000000,        // Granularity
+            0x70000000,        // Min Base Address
+            0x777FFFFF,        // Max Base Address
+            0x00000000,        // Translate
+            0x07800000         // Length
+          )
+
+          QWordMemory (        // 64-bit BAR Windows
+            ResourceProducer,
+            PosDecode,
+            MinFixed,
+            MaxFixed,
+            Cacheable,
+            ReadWrite,
+            0x00000000,        // Granularity
+            0x500000000,       // Min Base Address
+            0x7FFFFFFFF,       // Max Base Address
+            0x00000000,        // Translate
+            0x300000000        // Length
+          )
+
+          DWordIo (             // IO window
+            ResourceProducer,
+            MinFixed,
+            MaxFixed,
+            PosDecode,
+            EntireRange,
+            0x00000000,         // Granularity
+            0x00000000,         // Min Base Address
+            0x007FFFFF,         // Max Base Address
+            0x77800000,         // Translate
+            0x00800000,         // Length
+            ,
+            ,
+            ,
+            TypeTranslation
+          )
+        }) // Name (RBUF)
+
+        Return (RBUF)
+      } // Method (_CRS)
+    }
+  }
+}
-- 
2.7.4

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