diff --git a/devicemodel/hw/platform/ioc.c b/devicemodel/hw/platform/ioc.c
index 31ff5bf83..387847d53 100644
--- a/devicemodel/hw/platform/ioc.c
+++ b/devicemodel/hw/platform/ioc.c
@@ -106,6 +106,12 @@ do { if (ioc_debug && dbg_file) { fprintf(dbg_file, format, arg);\
 	fflush(dbg_file); } } while (0)
 #define	WPRINTF(format, arg...) printf(format, ##arg)
 
+/*
+ * For debugging only, to generate lifecycle, signal and oem-raw data
+ * from PTY devices instead of native CBC cdevs.
+ */
+/* #define IOC_DUMMY */
+
 /*
  * Type definition for thread function.
  */
@@ -122,6 +128,16 @@ static char virtual_uart_path[32];
  */
 static uint32_t ioc_boot_reason;
 
+/*
+ * Dummy pty slave fd is to maintain the pty active,
+ * to avoid EIO error when close the slave pty.
+ */
+#ifdef IOC_DUMMY
+static int dummy0_sfd = -1;
+static int dummy1_sfd = -1;
+static int dummy2_sfd = -1;
+#endif
+
 /*
  * IOC channels definition.
  */
@@ -146,6 +162,11 @@ static struct ioc_ch_info ioc_ch_tbl[] = {
 	{IOC_INIT_FD, IOC_NP_RAW10, IOC_NATIVE_RAW10,	IOC_CH_ON},
 	{IOC_INIT_FD, IOC_NP_RAW11, IOC_NATIVE_RAW11,	IOC_CH_ON},
 	{IOC_INIT_FD, IOC_DP_NONE,  IOC_VIRTUAL_UART,	IOC_CH_ON},
+#ifdef IOC_DUMMY
+	{IOC_INIT_FD, IOC_NP_FLF,   IOC_NATIVE_DUMMY0,	IOC_CH_ON},
+	{IOC_INIT_FD, IOC_NP_FSIG,  IOC_NATIVE_DUMMY1,	IOC_CH_ON},
+	{IOC_INIT_FD, IOC_NP_FRAW,  IOC_NATIVE_DUMMY2,	IOC_CH_ON}
+#endif
 };
 
 static struct cbc_signal cbc_tx_signal_table[] = {
@@ -713,6 +734,24 @@ ioc_ch_init(struct ioc_dev *ioc)
 		case IOC_VIRTUAL_UART:
 			fd = ioc_open_virtual_uart(virtual_uart_path);
 			break;
+#ifdef IOC_DUMMY
+		/*
+		 * TODO: check open if success for dummy fd
+		 */
+		case IOC_NATIVE_DUMMY0:
+			fd = ioc_open_virtual_uart(chl->name);
+			dummy0_sfd = open(chl->name, O_RDWR | O_NOCTTY |
+					O_NONBLOCK);
+		case IOC_NATIVE_DUMMY1:
+			fd = ioc_open_virtual_uart(chl->name);
+			dummy1_sfd = open(chl->name, O_RDWR | O_NOCTTY |
+					O_NONBLOCK);
+		case IOC_NATIVE_DUMMY2:
+			fd = ioc_open_virtual_uart(chl->name);
+			dummy2_sfd = open(chl->name, O_RDWR | O_NOCTTY |
+					O_NONBLOCK);
+			break;
+#endif
 		default:
 			fd = -1;
 			break;
@@ -751,6 +790,12 @@ ioc_ch_deinit(void)
 		close(chl->fd);
 		chl->fd = IOC_INIT_FD;
 	}
+
+#ifdef IOC_DUMMY
+	close(dummy0_sfd);
+	close(dummy1_sfd);
+	close(dummy2_sfd);
+#endif
 }
 
 /*
@@ -890,7 +935,18 @@ ioc_process_tx(struct ioc_dev *ioc, enum ioc_ch_id id)
 	req->srv_len = count;
 	req->link_len = 0;
 	req->rtype = CBC_REQ_T_PROT;
+#ifdef IOC_DUMMY
+	if (id == IOC_NATIVE_DUMMY0)
+		req->id = IOC_NATIVE_LFCC;
+	else if (id == IOC_NATIVE_DUMMY1)
+		req->id = IOC_NATIVE_SIGNAL;
+	else if (id == IOC_NATIVE_DUMMY2)
+		req->id = IOC_NATIVE_RAW11;
+	else
+		req->id = id;
+#else
 	req->id = id;
+#endif
 	cbc_request_enqueue(ioc, req, CBC_QUEUE_T_TX, false);
 	return 0;
 }
@@ -906,6 +962,11 @@ ioc_dispatch(struct ioc_dev *ioc, struct ioc_ch_info *chl)
 	case IOC_NATIVE_LFCC:
 	case IOC_NATIVE_SIGNAL:
 	case IOC_NATIVE_RAW0 ... IOC_NATIVE_RAW11:
+#ifdef IOC_DUMMY
+	case IOC_NATIVE_DUMMY0:
+	case IOC_NATIVE_DUMMY1:
+	case IOC_NATIVE_DUMMY2:
+#endif
 		ioc_process_tx(ioc, chl->id);
 		break;
 	case IOC_VIRTUAL_UART:
@@ -1158,6 +1219,9 @@ ioc_init(void)
 	if (ioc_is_platform_supported() != 0)
 		goto ioc_err;
 
+	/* Check IOC boot reason */
+	if (ioc_boot_reason == 0)
+		goto ioc_err;
 	ioc = (struct ioc_dev *)calloc(1, sizeof(struct ioc_dev));
 	if (!ioc)
 		goto ioc_err;