BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=2884

Added new approved ECR for the CXL Protocol Error Section.

Signed-off-by: Ashraf Javeed <ashraf.javeed@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
--
---
 MdePkg/Include/Guid/Cper.h | 75 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---
 MdePkg/MdePkg.dec          |  3 +++
 2 files changed, 75 insertions(+), 3 deletions(-)

diff --git a/MdePkg/Include/Guid/Cper.h b/MdePkg/Include/Guid/Cper.h
index 948f586427..28a0f3d3da 100644
--- a/MdePkg/Include/Guid/Cper.h
+++ b/MdePkg/Include/Guid/Cper.h
@@ -1,7 +1,7 @@
 /** @file
   GUIDs and definitions used for Common Platform Error Record.
 
-  Copyright (c) 2011 - 2017, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2011 - 2020, Intel Corporation. All rights reserved.<BR>
   (C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>
   SPDX-License-Identifier: BSD-2-Clause-Patent
 
@@ -10,8 +10,8 @@
 
 **/
 
-#ifndef __CPER_GUID_H__
-#define __CPER_GUID_H__
+#ifndef CPER_GUID_H__
+#define CPER_GUID_H__
 
 #pragma pack(1)
 
@@ -1249,4 +1249,73 @@ extern EFI_GUID gEfiIa32X64ErrorTypeMsCheckGuid;
 
 #endif
 
+//
+// Compute Express Link (CXL) Protocol Error Section Descriptor body
+//@{
+
+///
+/// CXL Protocol Error Section Type
+///
+#define EFI_ERROR_SECTION_CXL_PROTOCOL_GUID \
+  { \
+    0x80B9EFB4, 0x52B5, 0x4DE3, { 0xA7, 0x77, 0x68, 0x78, 0x4B, 0x77, 0x10, 0x48 } \
+  }
+
+//
+// Validation Bits to indicate the valid fields of the error section
+//
+#define EFI_CXL_PROTOCOL_ERROR_AGENT_TYPE_VALID             BIT0
+#define EFI_CXL_PROTOCOL_ERROR_AGENT_ADDRESS_VALID          BIT1
+#define EFI_CXL_PROTOCOL_ERROR_DEVICE_ID_VALID              BIT2
+#define EFI_CXL_PROTOCOL_ERROR_DEVICE_SERIAL_NUMBER_VALID   BIT3
+#define EFI_CXL_PROTOCOL_ERROR_CAPABILITY_STRUCTURE_VALID   BIT4
+#define EFI_CXL_PROTOCOL_ERROR_CXL_DVSEC_VALID              BIT5
+#define EFI_CXL_PROTOCOL_ERROR_CXL_ERROR_LOG_VALID          BIT6
+
+///
+/// Compute Express Link (CXL) Protocol Error Section
+///
+typedef struct {
+  // Indicates which of the following fields are valid
+  UINT64                                                        ValidationBits;
+  //
+  // error was detected by a CXL 1.1 device (0) or downstream port (1), other
+  // values reserved
+  UINT8                                                         CxlAgentType;
+  UINT8                                                         Reserved[7];
+  //
+  // PCI address of the CXL 1.1. Device, or RCRB base address of the
+  // CXL 1.1 downstream port
+  UINT64                                                        CxlAgentAddress;
+  //
+  // to uniquely identify CXL 1.1 Device - Vendor, Device ID, sussystem IDs,
+  // Class Code and slot number
+  UINT16                                                        DeviceId[8];
+  //
+  // Device Serial NUmber of the CXL 1.1 Device
+  UINT64                                                        DeviceSerialNumber;
+  //
+  // PCIe Capability Structure of the CXL 1.1 Device
+  UINT8                                                         CapabilityStructure[60];
+  //
+  // The length in bytes of the CXL DVSEC field
+  UINT16                                                        CxlDvsecLength;
+  //
+  // The length in bytes of the CXL Error Log field
+  UINT16                                                        CxlErrorLogLength;
+  UINT32                                                        Reserved2;
+  //
+  // variable-length structure, is defined by the CXL DVSEC Length field; either
+  // CXL 1.1 Device or CXL 1.1 downstream port
+  UINT8                                                         CxlDvsec[1];
+  //
+  // variable-length structure, is defined by the CXL Error Log Length field;
+  // contains copy of its “CXL RAS Capability Structure”, as defined in the
+  // CXL 1.1 Specification
+  UINT8                                                         CxlErrorLog[0];
+} EFI_CXL_PROTOCOL_ERROR_DATA;
+
+extern EFI_GUID gEfiCxlProtocolErrorSectionGuid;
+//@}
+
 #endif
diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec
index 73f6c24073..0f83b21be9 100644
--- a/MdePkg/MdePkg.dec
+++ b/MdePkg/MdePkg.dec
@@ -484,6 +484,9 @@
   ## Include/Guid/Cper.h
   gEfiIommuDMArErrorSectionGuid      = { 0x036f84e1, 0x7f37, 0x428c, { 0xa7, 0x9e, 0x57, 0x5f, 0xdf, 0xaa, 0x84, 0xec }}
 
+  ## Include/Guid/Cper.h
+  gEfiCxlProtocolErrorSectionGuid    = { 0x80B9EFB4, 0x52B5, 0x4DE3, { 0xA7, 0x77, 0x68, 0x78, 0x4B, 0x77, 0x10, 0x48 }}
+
   #
   # GUID defined in UEFI2.2
   #
-- 
2.21.0.windows.1