diff --git a/bsp/k210/driver/board.c b/bsp/k210/driver/board.c
index 0cd78b8c79..4241cc306e 100644
--- a/bsp/k210/driver/board.c
+++ b/bsp/k210/driver/board.c
@@ -117,3 +117,10 @@ void rt_hw_board_init(void)
     rt_components_board_init();
 #endif
 }
+void rt_hw_cpu_reset(void)
+{
+    sysctl->soft_reset.soft_reset = 1;
+    while(1);
+}
+
+MSH_CMD_EXPORT_ALIAS(rt_hw_cpu_reset, reboot, reset machine);
diff --git a/bsp/k210/driver/drv_io_config.c b/bsp/k210/driver/drv_io_config.c
index 63a75a0790..cd0e8f27f6 100644
--- a/bsp/k210/driver/drv_io_config.c
+++ b/bsp/k210/driver/drv_io_config.c
@@ -15,53 +15,71 @@
 
 #define HS_GPIO(n) (FUNC_GPIOHS0 + n)
 
+#define IOCONFIG(pin,func)  {pin, func, #func}
+
 static struct io_config
 {
     int io_num;
     fpioa_function_t func;
+    const char * func_name;
 } io_config[] = 
 {
 #ifdef BSP_USING_LCD
-    {BSP_LCD_CS_PIN, FUNC_SPI0_SS0},                 /* LCD CS PIN */
-    {BSP_LCD_WR_PIN, FUNC_SPI0_SCLK},                /* LCD WR PIN */
-    {BSP_LCD_DC_PIN, HS_GPIO(LCD_DC_PIN)},     /* LCD DC PIN */
+    IOCONFIG(BSP_LCD_CS_PIN, FUNC_SPI0_SS0),                 /* LCD CS PIN */
+    IOCONFIG(BSP_LCD_WR_PIN, FUNC_SPI0_SCLK),                /* LCD WR PIN */
+    IOCONFIG(BSP_LCD_DC_PIN, HS_GPIO(LCD_DC_PIN)),     /* LCD DC PIN */
 #endif
 
 #ifdef BSP_USING_CAMERA
-    {BSP_CAMERA_SCCB_SDA_PIN, FUNC_SCCB_SDA},
-    {BSP_CAMERA_SCCB_SCLK_PIN, FUNC_SCCB_SCLK},
-    {BSP_CAMERA_CMOS_RST_PIN, FUNC_CMOS_RST},
-    {BSP_CAMERA_CMOS_VSYNC_PIN, FUNC_CMOS_VSYNC},
-    {BSP_CAMERA_CMOS_PWDN_PIN, FUNC_CMOS_PWDN},
-    {BSP_CAMERA_CMOS_XCLK_PIN, FUNC_CMOS_XCLK},
-    {BSP_CAMERA_CMOS_PCLK_PIN, FUNC_CMOS_PCLK},
-    {BSP_CAMERA_CMOS_HREF_PIN, FUNC_CMOS_HREF},
+    IOCONFIG(BSP_CAMERA_SCCB_SDA_PIN, FUNC_SCCB_SDA),
+    IOCONFIG(BSP_CAMERA_SCCB_SCLK_PIN, FUNC_SCCB_SCLK),
+    IOCONFIG(BSP_CAMERA_CMOS_RST_PIN, FUNC_CMOS_RST),
+    IOCONFIG(BSP_CAMERA_CMOS_VSYNC_PIN, FUNC_CMOS_VSYNC),
+    IOCONFIG(BSP_CAMERA_CMOS_PWDN_PIN, FUNC_CMOS_PWDN),
+    IOCONFIG(BSP_CAMERA_CMOS_XCLK_PIN, FUNC_CMOS_XCLK),
+    IOCONFIG(BSP_CAMERA_CMOS_PCLK_PIN, FUNC_CMOS_PCLK),
+    IOCONFIG(BSP_CAMERA_CMOS_HREF_PIN, FUNC_CMOS_HREF),
 #endif
 
 #ifdef BSP_USING_SPI1
-    {BSP_SPI1_CLK_PIN, FUNC_SPI1_SCLK},
-    {BSP_SPI1_D0_PIN, FUNC_SPI1_D0},
-    {BSP_SPI1_D1_PIN, FUNC_SPI1_D1},
+    IOCONFIG(BSP_SPI1_CLK_PIN, FUNC_SPI1_SCLK),
+    IOCONFIG(BSP_SPI1_D0_PIN, FUNC_SPI1_D0),
+    IOCONFIG(BSP_SPI1_D1_PIN, FUNC_SPI1_D1),
 #ifdef BSP_USING_SPI1_AS_QSPI
-    {BSP_SPI1_D2_PIN, FUNC_SPI1_D2},
-    {BSP_SPI1_D3_PIN, FUNC_SPI1_D3},
+    IOCONFIG(BSP_SPI1_D2_PIN, FUNC_SPI1_D2),
+    IOCONFIG(BSP_SPI1_D3_PIN, FUNC_SPI1_D3),
 #endif
 #ifdef BSP_SPI1_USING_SS0
-    {BSP_SPI1_SS0_PIN, HS_GPIO(SPI1_CS0_PIN)},
+    IOCONFIG(BSP_SPI1_SS0_PIN, HS_GPIO(SPI1_CS0_PIN)),
 #endif
 #ifdef BSP_SPI1_USING_SS1
-    {BSP_SPI1_SS1_PIN, HS_GPIO(SPI1_CS1_PIN)},
+    IOCONFIG(BSP_SPI1_SS1_PIN, HS_GPIO(SPI1_CS1_PIN)),
 #endif
 #ifdef BSP_SPI1_USING_SS2
-    {BSP_SPI1_SS2_PIN, HS_GPIO(SPI1_CS2_PIN)},
+    IOCONFIG(BSP_SPI1_SS2_PIN, HS_GPIO(SPI1_CS2_PIN)),
 #endif
 #ifdef BSP_SPI1_USING_SS3
-    {BSP_SPI1_SS3_PIN, HS_GPIO(SPI1_CS3_PIN)},
+    IOCONFIG(BSP_SPI1_SS3_PIN, HS_GPIO(SPI1_CS3_PIN)),
 #endif
 #endif
 
 };
 
+static int print_io_config()
+{
+    int i;
+    rt_kprintf("IO Configuration Table\n");
+    rt_kprintf("┌───────┬────────────────────────┐\n");
+    rt_kprintf("│Pin    │Function                │\n");
+    rt_kprintf("├───────┼────────────────────────┤\n");
+    for(i = 0; i < sizeof io_config / sizeof io_config[0]; i++)
+    {
+        rt_kprintf("│%-2d     │%-24.24s│\n", io_config[i].io_num, io_config[i].func_name);
+    }
+    rt_kprintf("└───────┴────────────────────────┘\n");
+    return 0;
+}
+MSH_CMD_EXPORT_ALIAS(print_io_config, io, print io config);
 
 int io_config_init(void)
 {
diff --git a/bsp/k210/link.lds b/bsp/k210/link.lds
index 851861f19f..bcf7681595 100644
--- a/bsp/k210/link.lds
+++ b/bsp/k210/link.lds
@@ -33,7 +33,7 @@ SECTIONS
         *(.start);
     } > SRAM
 
-    . = ALIGN(4);
+    . = ALIGN(8);
 
     .text : 
     {
@@ -46,24 +46,28 @@ SECTIONS
         *(.gnu.linkonce.t*)
      
         /* section information for finsh shell */
-        . = ALIGN(4);
+        . = ALIGN(8);
         __fsymtab_start = .;
         KEEP(*(FSymTab))
         __fsymtab_end = .;
-        . = ALIGN(4);
+        . = ALIGN(8);
         __vsymtab_start = .;
         KEEP(*(VSymTab))
         __vsymtab_end = .;
-        . = ALIGN(4);
+        . = ALIGN(8);
 
         /* section information for initial. */
-        . = ALIGN(4);
+        . = ALIGN(8);
         __rt_init_start = .;
         KEEP(*(SORT(.rti_fn*)))
         __rt_init_end = .;
-        . = ALIGN(4);
+        . = ALIGN(8);
 
-        . = ALIGN(4);
+        __rt_utest_tc_tab_start = .;
+        KEEP(*(UtestTcTab))
+        __rt_utest_tc_tab_end = .;
+
+        . = ALIGN(8);
         _etext = .;
     } > SRAM
 
@@ -74,7 +78,7 @@ SECTIONS
     } > SRAM
     .eh_frame : ONLY_IF_RO { KEEP (*(.eh_frame)) } > SRAM
 
-    . = ALIGN(4);
+    . = ALIGN(8);
 
     .data : 
     {
diff --git a/libcpu/risc-v/k210/interrupt.c b/libcpu/risc-v/k210/interrupt.c
index 45b437c099..b582599daf 100644
--- a/libcpu/risc-v/k210/interrupt.c
+++ b/libcpu/risc-v/k210/interrupt.c
@@ -270,7 +270,7 @@ struct exception_stack_frame
 
 void print_stack_frame(uintptr_t * sp)
 {
-    struct exception_stack_frame * esf = (struct exception_stack_frame *)sp;
+    struct exception_stack_frame * esf = (struct exception_stack_frame *)(sp+1);
 
     rt_kprintf("\n=================================================================\n");
     rt_kprintf("x1 (ra   : Return address                ) ==> 0x%08x%08x\n", esf->x1 >> 32  , esf->x1 & UINT32_MAX);