diff --git a/sections/cper-section-cxl-protocol.c b/sections/cper-section-cxl-protocol.c
new file mode 100644
index 0000000..41b6ee5
--- /dev/null
+++ b/sections/cper-section-cxl-protocol.c
@@ -0,0 +1,88 @@
+/**
+ * Describes functions for converting CXL protocol error CPER sections from binary and JSON format
+ * into an intermediate format.
+ * 
+ * Author: Lawrence.Tang@arm.com
+ **/
+#include <stdio.h>
+#include "json.h"
+#include "../edk/Cper.h"
+#include "../cper-utils.h"
+#include "cper-section-cxl-protocol.h"
+
+//Converts a single CXL protocol error CPER section into JSON IR.
+json_object* cper_section_cxl_protocol_to_ir(void* section, EFI_ERROR_SECTION_DESCRIPTOR* descriptor)
+{
+    EFI_CXL_PROTOCOL_ERROR_DATA* cxl_protocol_error = (EFI_CXL_PROTOCOL_ERROR_DATA*)section;
+    json_object* section_ir = json_object_new_object();
+
+    //Validation bits.
+    json_object* validation = bitfield_to_ir(cxl_protocol_error->ValidBits, 7, CXL_PROTOCOL_ERROR_VALID_BITFIELD_NAMES);
+    json_object_object_add(section_ir, "validationBits", validation);
+
+    //Type of detecting agent.
+    json_object* agent_type = integer_to_readable_pair(cxl_protocol_error->CxlAgentType, 2,
+        CXL_PROTOCOL_ERROR_AGENT_TYPES_KEYS,
+        CXL_PROTOCOL_ERROR_AGENT_TYPES_VALUES,
+        "Unknown (Reserved)");
+    json_object_object_add(section_ir, "agentType", agent_type);
+
+    //CXL agent address, depending on the agent type.
+    if (cxl_protocol_error->CxlAgentType == CXL_PROTOCOL_ERROR_DEVICE_AGENT)
+    {
+        //Address is a CXL1.1 device agent.
+        json_object* agent_address = json_object_new_object();
+        json_object_object_add(agent_address, "functionNumber", 
+            json_object_new_uint64(cxl_protocol_error->CxlAgentAddress.DeviceAddress.FunctionNumber));
+        json_object_object_add(agent_address, "deviceNumber", 
+            json_object_new_uint64(cxl_protocol_error->CxlAgentAddress.DeviceAddress.DeviceNumber));
+        json_object_object_add(agent_address, "busNumber", 
+            json_object_new_uint64(cxl_protocol_error->CxlAgentAddress.DeviceAddress.BusNumber));
+        json_object_object_add(agent_address, "segmentNumber", 
+            json_object_new_uint64(cxl_protocol_error->CxlAgentAddress.DeviceAddress.SegmentNumber));
+
+        json_object_object_add(section_ir, "cxlAgentAddress", agent_address);
+    }
+    else if (cxl_protocol_error->CxlAgentType == CXL_PROTOCOL_ERROR_HOST_DOWNSTREAM_PORT_AGENT)
+    {
+        //Address is a CXL port RCRB base address.
+        json_object_object_add(section_ir, "cxlAgentAddress", 
+            json_object_new_uint64(cxl_protocol_error->CxlAgentAddress.PortRcrbBaseAddress));
+    }
+
+    //Device ID.
+    json_object* device_id = json_object_new_object();
+    json_object_object_add(device_id, "vendorID", 
+        json_object_new_uint64(cxl_protocol_error->DeviceId.VendorId));
+    json_object_object_add(device_id, "deviceID", 
+        json_object_new_uint64(cxl_protocol_error->DeviceId.DeviceId));
+    json_object_object_add(device_id, "subsystemVendorID", 
+        json_object_new_uint64(cxl_protocol_error->DeviceId.SubsystemVendorId));
+    json_object_object_add(device_id, "subsystemDeviceID", 
+        json_object_new_uint64(cxl_protocol_error->DeviceId.SubsystemDeviceId));
+    json_object_object_add(device_id, "classCode", 
+        json_object_new_uint64(cxl_protocol_error->DeviceId.ClassCode));
+    json_object_object_add(device_id, "slotNumber", 
+        json_object_new_uint64(cxl_protocol_error->DeviceId.SlotNumber));
+    json_object_object_add(section_ir, "deviceID", device_id);
+
+    //Device serial & capability structure (if CXL 1.1 device).
+    if (cxl_protocol_error->CxlAgentType == CXL_PROTOCOL_ERROR_DEVICE_AGENT)
+    {
+        json_object_object_add(section_ir, "deviceSerial", json_object_new_uint64(cxl_protocol_error->DeviceSerial));
+        //todo: add generic parser for PCI capability structure (see Cper.h)
+    }
+
+    //CXL DVSEC & error log length.
+    json_object_object_add(section_ir, "dvsecLength", json_object_new_int(cxl_protocol_error->CxlDvsecLength));
+    json_object_object_add(section_ir, "errorLogLength", json_object_new_int(cxl_protocol_error->CxlErrorLogLength));
+
+    //CXL DVSEC
+    //todo: for CXL 1.1 devices, implement this as the "CXL DVSEC For Flex Bus Device" structure as in CXL 1.1 spec.
+    //todo: for CXL 1.1 host downstream port, implement this as "CXL DVSEC For Flex Bus Port" structure as in CXL 1.1 spec.
+
+    //CXL Error Log
+    //todo: implement this as the "CXL RAS Capability Structure" as in CXL 1.1 spec.
+    
+    return section_ir;
+}
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