diff --git a/bsp/nxp/imx/imx6ull-smart/.config b/bsp/nxp/imx/imx6ull-smart/.config
index 78dc560851..9defed87cc 100644
--- a/bsp/nxp/imx/imx6ull-smart/.config
+++ b/bsp/nxp/imx/imx6ull-smart/.config
@@ -162,6 +162,7 @@ CONFIG_RT_DFS_ELM_MUTEX_TIMEOUT=3000
 CONFIG_RT_USING_DFS_DEVFS=y
 CONFIG_RT_USING_DFS_ROMFS=y
 # CONFIG_RT_USING_DFS_ROMFS_USER_ROOT is not set
+CONFIG_RT_USING_DFS_PTYFS=y
 # CONFIG_RT_USING_DFS_CROMFS is not set
 CONFIG_RT_USING_DFS_TMPFS=y
 # CONFIG_RT_USING_DFS_MQUEUE is not set
@@ -192,8 +193,6 @@ CONFIG_RT_USING_SERIAL_V1=y
 # CONFIG_RT_USING_SERIAL_V2 is not set
 # CONFIG_RT_SERIAL_USING_DMA is not set
 CONFIG_RT_SERIAL_RB_BUFSZ=64
-CONFIG_RT_USING_TTY=y
-# CONFIG_RT_TTY_DEBUG is not set
 # CONFIG_RT_USING_CAN is not set
 CONFIG_RT_USING_CPUTIME=y
 CONFIG_CPUTIME_TIMER_FREQ=0
@@ -454,10 +453,11 @@ CONFIG_LWP_CONSOLE_INPUT_BUFFER_SIZE=1024
 CONFIG_LWP_TID_MAX_NR=64
 CONFIG_LWP_ENABLE_ASID=y
 CONFIG_RT_LWP_SHM_MAX_NR=64
-# CONFIG_LWP_UNIX98_PTY is not set
 CONFIG_RT_USING_LDSO=y
 # CONFIG_ELF_DEBUG_ENABLE is not set
 # CONFIG_ELF_LOAD_RANDOMIZE is not set
+CONFIG_LWP_USING_TERMINAL=y
+CONFIG_LWP_PTY_MAX_PARIS_LIMIT=64
 
 #
 # Memory management
@@ -728,9 +728,6 @@ CONFIG_RT_USING_LDSO=y
 # CMSIS: ARM Cortex-M Microcontroller Software Interface Standard
 #
 # CONFIG_PKG_USING_CMSIS_5 is not set
-# CONFIG_PKG_USING_CMSIS_CORE is not set
-# CONFIG_PKG_USING_CMSIS_DSP is not set
-# CONFIG_PKG_USING_CMSIS_NN is not set
 # CONFIG_PKG_USING_CMSIS_RTOS1 is not set
 # CONFIG_PKG_USING_CMSIS_RTOS2 is not set
 
@@ -795,29 +792,6 @@ CONFIG_RT_USING_LDSO=y
 # peripheral libraries and drivers
 #
 
-#
-# HAL & SDK Drivers
-#
-
-#
-# STM32 HAL & SDK Drivers
-#
-# CONFIG_PKG_USING_STM32L4XX_HAL_DRIVER is not set
-# CONFIG_PKG_USING_STM32WB55_SDK is not set
-# CONFIG_PKG_USING_STM32_SDIO is not set
-# CONFIG_PKG_USING_BLUETRUM_SDK is not set
-# CONFIG_PKG_USING_EMBARC_BSP is not set
-# CONFIG_PKG_USING_ESP_IDF is not set
-
-#
-# Kendryte SDK
-#
-# CONFIG_PKG_USING_K210_SDK is not set
-# CONFIG_PKG_USING_KENDRYTE_SDK is not set
-# CONFIG_PKG_USING_NRF5X_SDK is not set
-# CONFIG_PKG_USING_NRFX is not set
-# CONFIG_PKG_USING_RASPBERRYPI_PICO_SDK is not set
-
 #
 # sensors drivers
 #
@@ -899,8 +873,9 @@ CONFIG_RT_USING_LDSO=y
 # CONFIG_PKG_USING_FT6236 is not set
 # CONFIG_PKG_USING_XPT2046_TOUCH is not set
 # CONFIG_PKG_USING_CST816X is not set
-# CONFIG_PKG_USING_CST812T is not set
 # CONFIG_PKG_USING_REALTEK_AMEBA is not set
+# CONFIG_PKG_USING_STM32_SDIO is not set
+# CONFIG_PKG_USING_ESP_IDF is not set
 # CONFIG_PKG_USING_BUTTON is not set
 # CONFIG_PKG_USING_PCF8574 is not set
 # CONFIG_PKG_USING_SX12XX is not set
@@ -908,6 +883,14 @@ CONFIG_RT_USING_LDSO=y
 # CONFIG_PKG_USING_LEDBLINK is not set
 # CONFIG_PKG_USING_LITTLED is not set
 # CONFIG_PKG_USING_LKDGUI is not set
+# CONFIG_PKG_USING_NRF5X_SDK is not set
+# CONFIG_PKG_USING_NRFX is not set
+
+#
+# Kendryte SDK
+#
+# CONFIG_PKG_USING_K210_SDK is not set
+# CONFIG_PKG_USING_KENDRYTE_SDK is not set
 # CONFIG_PKG_USING_INFRARED is not set
 # CONFIG_PKG_USING_MULTI_INFRARED is not set
 # CONFIG_PKG_USING_AGILE_BUTTON is not set
@@ -922,6 +905,7 @@ CONFIG_RT_USING_LDSO=y
 # CONFIG_PKG_USING_AS608 is not set
 # CONFIG_PKG_USING_RC522 is not set
 # CONFIG_PKG_USING_WS2812B is not set
+# CONFIG_PKG_USING_EMBARC_BSP is not set
 # CONFIG_PKG_USING_EXTERN_RTC_DRIVERS is not set
 # CONFIG_PKG_USING_MULTI_RTIMER is not set
 # CONFIG_PKG_USING_MAX7219 is not set
@@ -944,6 +928,7 @@ CONFIG_RT_USING_LDSO=y
 # CONFIG_PKG_USING_VIRTUAL_SENSOR is not set
 # CONFIG_PKG_USING_VDEVICE is not set
 # CONFIG_PKG_USING_SGM706 is not set
+# CONFIG_PKG_USING_STM32WB55_SDK is not set
 # CONFIG_PKG_USING_RDA58XX is not set
 # CONFIG_PKG_USING_LIBNFC is not set
 # CONFIG_PKG_USING_MFOC is not set
@@ -953,6 +938,7 @@ CONFIG_RT_USING_LDSO=y
 # CONFIG_PKG_USING_ROSSERIAL is not set
 # CONFIG_PKG_USING_MICRO_ROS is not set
 # CONFIG_PKG_USING_MCP23008 is not set
+# CONFIG_PKG_USING_BLUETRUM_SDK is not set
 # CONFIG_PKG_USING_MISAKA_AT24CXX is not set
 # CONFIG_PKG_USING_MISAKA_RGB_BLING is not set
 # CONFIG_PKG_USING_LORA_MODEM_DRIVER is not set
@@ -960,6 +946,7 @@ CONFIG_RT_USING_LDSO=y
 # CONFIG_PKG_USING_MB85RS16 is not set
 # CONFIG_PKG_USING_RFM300 is not set
 # CONFIG_PKG_USING_IO_INPUT_FILTER is not set
+# CONFIG_PKG_USING_RASPBERRYPI_PICO_SDK is not set
 # CONFIG_PKG_USING_LRF_NV7LIDAR is not set
 # CONFIG_PKG_USING_AIP650 is not set
 # CONFIG_PKG_USING_FINGERPRINT is not set
@@ -970,7 +957,6 @@ CONFIG_RT_USING_LDSO=y
 # CONFIG_PKG_USING_X9555 is not set
 # CONFIG_PKG_USING_SYSTEM_RUN_LED is not set
 # CONFIG_PKG_USING_BT_MX01 is not set
-# CONFIG_PKG_USING_RGPOWER is not set
 # CONFIG_PKG_USING_SPI_TOOLS is not set
 
 #
@@ -1371,7 +1357,7 @@ CONFIG_RT_USING_WDT2=y
 #
 # Select ENET Driver
 #
-CONFIG_RT_USING_ENET1=y
+# CONFIG_RT_USING_ENET1 is not set
 # CONFIG_RT_USING_ENET2 is not set
 
 #
diff --git a/bsp/nxp/imx/imx6ull-smart/rtconfig.h b/bsp/nxp/imx/imx6ull-smart/rtconfig.h
index 9ca3db02b4..3af833a2d2 100644
--- a/bsp/nxp/imx/imx6ull-smart/rtconfig.h
+++ b/bsp/nxp/imx/imx6ull-smart/rtconfig.h
@@ -116,6 +116,7 @@
 #define RT_DFS_ELM_MUTEX_TIMEOUT 3000
 #define RT_USING_DFS_DEVFS
 #define RT_USING_DFS_ROMFS
+#define RT_USING_DFS_PTYFS
 #define RT_USING_DFS_TMPFS
 #define RT_USING_PAGECACHE
 
@@ -138,7 +139,6 @@
 #define RT_USING_SERIAL
 #define RT_USING_SERIAL_V1
 #define RT_SERIAL_RB_BUFSZ 64
-#define RT_USING_TTY
 #define RT_USING_CPUTIME
 #define CPUTIME_TIMER_FREQ 0
 #define RT_USING_I2C
@@ -297,6 +297,8 @@
 #define LWP_ENABLE_ASID
 #define RT_LWP_SHM_MAX_NR 64
 #define RT_USING_LDSO
+#define LWP_USING_TERMINAL
+#define LWP_PTY_MAX_PARIS_LIMIT 64
 
 /* Memory management */
 
@@ -367,20 +369,15 @@
 
 /* peripheral libraries and drivers */
 
-/* HAL & SDK Drivers */
-
-/* STM32 HAL & SDK Drivers */
-
-
-/* Kendryte SDK */
-
-
 /* sensors drivers */
 
 
 /* touch drivers */
 
 
+/* Kendryte SDK */
+
+
 /* AI packages */
 
 
@@ -489,7 +486,6 @@
 
 /* Select ENET Driver */
 
-#define RT_USING_ENET1
 
 /* Select Wifi Driver */
 
diff --git a/libcpu/arm/cortex-a/start_gcc.S b/libcpu/arm/cortex-a/start_gcc.S
index 3b126a3774..2f6add6058 100644
--- a/libcpu/arm/cortex-a/start_gcc.S
+++ b/libcpu/arm/cortex-a/start_gcc.S
@@ -260,6 +260,7 @@ enable_mmu_page_table_early:
     mcr p15, 0, r0, c7, c5, 6    /* bpiall */
 
     mrc p15, 0, r0, c1, c0, 0
+    bic r0, r0, #0x7                    /* clear bit1~3 */
     orr r0, #((1 << 12) | (1 << 11))    /* instruction cache, branch prediction */
     orr r0, #((1 << 2) | (1 << 0))      /* data cache, mmu enable */
     mcr p15, 0, r0, c1, c0, 0