diff --git a/src/lib/tpm2_marshaling.c b/src/lib/tpm2_marshaling.c
index 5aad276dbb..9565aeab94 100644
--- a/src/lib/tpm2_marshaling.c
+++ b/src/lib/tpm2_marshaling.c
@@ -315,6 +315,15 @@ static void marshal_nv_read(void **buffer,
 	marshal_u16(buffer, command_body->offset, buffer_space);
 }
 
+/* TPM2_Clear command does not require paramaters. */
+static void marshal_clear(void **buffer, size_t *buffer_space)
+{
+	const uint32_t handle[] = { TPM_RH_PLATFORM };
+
+	marshal_common_session_header(buffer, handle,
+				      ARRAY_SIZE(handle), buffer_space);
+}
+
 static void marshal_selftest(void **buffer,
 			     struct tpm2_self_test *command_body,
 			     size_t *buffer_space)
@@ -359,6 +368,10 @@ int tpm_marshal_command(TPM_CC command, void *tpm_command_body,
 		marshal_selftest(&cmd_body, tpm_command_body, &body_size);
 		break;
 
+	case TPM2_Clear:
+		marshal_clear(&cmd_body, &body_size);
+		break;
+
 	default:
 		body_size = 0;
 		printk(BIOS_INFO, "%s:%d:Request to marshal unsupported command %#x\n",
@@ -517,6 +530,7 @@ struct tpm2_response *tpm_unmarshal_response(TPM_CC command,
 				  &tpm2_resp.nvr);
 		break;
 
+	case TPM2_Clear:
 	case TPM2_NV_DefineSpace:
 	case TPM2_NV_Write:
 		/* Session data included in response can be safely ignored. */
diff --git a/src/lib/tpm2_tlcl_structures.h b/src/lib/tpm2_tlcl_structures.h
index d05c564669..8e518583bc 100644
--- a/src/lib/tpm2_tlcl_structures.h
+++ b/src/lib/tpm2_tlcl_structures.h
@@ -56,6 +56,7 @@ struct tpm_header {
 } __attribute__((packed));
 
 /* TPM command codes. */
+#define TPM2_Clear          ((TPM_CC)0x00000126)
 #define TPM2_NV_DefineSpace ((TPM_CC)0x0000012A)
 #define TPM2_NV_Write       ((TPM_CC)0x00000137)
 #define TPM2_SelfTest       ((TPM_CC)0x00000143)