Dump the communication buffer before and after triggering the SMI.

chipsec/hal/interrupts.py

@@ -34,7 +34,7 @@ import struct
 import uuid
 
 from chipsec.hal import hal_base
-from chipsec.logger import logger
+from chipsec.logger import logger, print_buffer_bytes
 from chipsec.hal.acpi import ACPI
 from chipsec.hal.acpi_tables import UEFI_TABLE
 from chipsec.defines import bytestostring
@@ -173,7 +173,18 @@ MdeModulePkg/Core/PiSmmCore/PiSmmCorePrivateData.h
         self.cs.mem.write_physical_mem(smmc + CommBuffer_offset, 8, struct.pack("Q", payload_loc))
         self.cs.mem.write_physical_mem(smmc + BufferSize_offset, 8, struct.pack("Q", payload_sz))
         self.cs.mem.write_physical_mem(payload_loc, len(data_hdr), data_hdr)
+        
+        if self.logger.VERBOSE:
+            self.logger.log("[*] Communication buffer on input")
+            print_buffer_bytes(self.cs.mem.read_physical_mem(payload_loc, payload_sz))
+            self.logger.log("")
+
         self.send_SMI_APMC(CommandPort, DataPort)
+        
+        if self.logger.VERBOSE:
+            self.logger.log("[*] Communication buffer on output")
+            print_buffer_bytes(self.cs.mem.read_physical_mem(payload_loc, payload_sz))
+            self.logger.log("")
 
         ReturnStatus = struct.unpack("Q", self.cs.mem.read_physical_mem(smmc + ReturnStatus_offset, 8))[0]
         return ReturnStatus