diff --git a/bsp/allwinner_tina/libcpu/cpuport.c b/bsp/allwinner_tina/libcpu/cpuport.c
index 94f2baf415e..37d64699551 100644
--- a/bsp/allwinner_tina/libcpu/cpuport.c
+++ b/bsp/allwinner_tina/libcpu/cpuport.c
@@ -160,7 +160,7 @@ void rt_hw_cpu_reset()
  *  shutdown CPU
  *
  */
-void rt_hw_cpu_shutdown()
+void rt_hw_cpu_shutdown(void)
 {
     rt_uint32_t level;
     rt_kprintf("shutdown...\n");
diff --git a/bsp/bluetrum/libcpu/cpu/cpuport.c b/bsp/bluetrum/libcpu/cpu/cpuport.c
index a2d405ccdda..d292585028f 100644
--- a/bsp/bluetrum/libcpu/cpu/cpuport.c
+++ b/bsp/bluetrum/libcpu/cpu/cpuport.c
@@ -52,16 +52,3 @@ rt_uint8_t *rt_hw_stack_init(void       *tentry,
     /* return task's current stack address */
     return (rt_uint8_t *)stk;
 }
-
-/** shutdown CPU */
-void rt_hw_cpu_shutdown(void)
-{
-    rt_uint32_t level;
-    rt_kprintf("shutdown...\n");
-
-    level = rt_hw_interrupt_disable();
-    while (level)
-    {
-        RT_ASSERT(0);
-    }
-}
diff --git a/bsp/imx6sx/cortex-a9/cpu/cpu.c b/bsp/imx6sx/cortex-a9/cpu/cpu.c
index 2d787150116..ec44c1493b8 100644
--- a/bsp/imx6sx/cortex-a9/cpu/cpu.c
+++ b/bsp/imx6sx/cortex-a9/cpu/cpu.c
@@ -17,17 +17,6 @@
  */
 /*@{*/
 
-/** shutdown CPU */
-void rt_hw_cpu_shutdown()
-{
-	rt_uint32_t level;
-	rt_kprintf("shutdown...\n");
 
-	level = rt_hw_interrupt_disable();
-	while (level)
-	{
-		RT_ASSERT(0);
-	}
-}
 
 /*@}*/
diff --git a/bsp/mipssim/drivers/board.c b/bsp/mipssim/drivers/board.c
index a0ef220bc7a..9c295f0a28d 100644
--- a/bsp/mipssim/drivers/board.c
+++ b/bsp/mipssim/drivers/board.c
@@ -26,28 +26,6 @@
 
 extern unsigned char __bss_end;
 
-/**
- * this function will reset CPU
- *
- */
-void rt_hw_cpu_reset(void)
-{
-    rt_kprintf("reboot system...\n");
-    while (1);
-}
-
-/**
- * this function will shutdown CPU
- *
- */
-void rt_hw_cpu_shutdown(void)
-{
-    rt_kprintf("shutdown...\n");
-
-    while (1);
-}
-
-
 /**
  * This is the timer interrupt service routine.
  */
diff --git a/bsp/raspberry-pi/raspi2/cpu/cpu.c b/bsp/raspberry-pi/raspi2/cpu/cpu.c
index 5f82671c1bd..78dce1a2370 100644
--- a/bsp/raspberry-pi/raspi2/cpu/cpu.c
+++ b/bsp/raspberry-pi/raspi2/cpu/cpu.c
@@ -17,17 +17,6 @@
  */
 /*@{*/
 
-/** shutdown CPU */
-void rt_hw_cpu_shutdown()
-{
-    rt_uint32_t level;
-    rt_kprintf("shutdown...\n");
 
-    level = rt_hw_interrupt_disable();
-    while (level)
-    {
-        RT_ASSERT(0);
-    }
-}
 
 /*@}*/
diff --git a/bsp/raspberry-pi/raspi3-32/cpu/cpu.c b/bsp/raspberry-pi/raspi3-32/cpu/cpu.c
index b43b8045978..d0a583e96ba 100644
--- a/bsp/raspberry-pi/raspi3-32/cpu/cpu.c
+++ b/bsp/raspberry-pi/raspi3-32/cpu/cpu.c
@@ -75,17 +75,5 @@ void rt_hw_spin_unlock(rt_hw_spinlock_t *lock)
  */
 /*@{*/
 
-/** shutdown CPU */
-void rt_hw_cpu_shutdown()
-{
-    rt_uint32_t level;
-    rt_kprintf("shutdown...\n");
-
-    level = rt_hw_interrupt_disable();
-    while (level)
-    {
-        RT_ASSERT(0);
-    }
-}
 
 /*@}*/
diff --git a/bsp/raspberry-pico/libcpu/cpuport.c b/bsp/raspberry-pico/libcpu/cpuport.c
index 93cc35189aa..b6cacb6e130 100644
--- a/bsp/raspberry-pico/libcpu/cpuport.c
+++ b/bsp/raspberry-pico/libcpu/cpuport.c
@@ -278,7 +278,7 @@ void rt_hw_hard_fault_exception(struct exception_stack_frame *contex)
 /**
  * reset CPU
  */
-rt_weak void rt_hw_cpu_reset(void)
+void rt_hw_cpu_reset(void)
 {
     SCB_AIRCR  = SCB_RESET_VALUE;//((0x5FAUL << SCB_AIRCR_VECTKEY_Pos) |SCB_AIRCR_SYSRESETREQ_Msk);
 }
diff --git a/bsp/rockchip/rk3568/driver/board.c b/bsp/rockchip/rk3568/driver/board.c
index 06197763d32..5fdbe52ea0f 100644
--- a/bsp/rockchip/rk3568/driver/board.c
+++ b/bsp/rockchip/rk3568/driver/board.c
@@ -133,7 +133,7 @@ void start_cpu(int argc, char *argv[])
 MSH_CMD_EXPORT(start_cpu, start_cpu);
 
 #ifdef RT_AMP_SLAVE
-void rt_hw_cpu_shutdown()
+void rt_hw_cpu_shutdown(void)
 {
     if (psci_ops.cpu_off)
     {
diff --git a/documentation/doxygen/hardware.h b/documentation/doxygen/hardware.h
index bc052749982..9f613c272ee 100644
--- a/documentation/doxygen/hardware.h
+++ b/documentation/doxygen/hardware.h
@@ -74,14 +74,4 @@ void rt_hw_interrupt_umask(int vector);
 void rt_hw_interrupt_install(int vector, rt_isr_handler_t new_handler,
                             rt_isr_handler_t *old_handler);
 
-/**
- * This function will reset whole platform.
- */
-void rt_hw_cpu_reset(void);
-
-/**
- * This function will halt whole platform.
- */
-void rt_hw_cpu_shutdown(void);
-
 /**@}*/
diff --git a/libcpu/aarch64/common/cpu.c b/libcpu/aarch64/common/cpu.c
index 8953b64556b..7aeb59f6346 100644
--- a/libcpu/aarch64/common/cpu.c
+++ b/libcpu/aarch64/common/cpu.c
@@ -357,7 +357,7 @@ const char *rt_hw_cpu_arch(void)
 }
 
 /** shutdown CPU */
-rt_weak void rt_hw_cpu_shutdown()
+void rt_hw_cpu_shutdown(void)
 {
     rt_uint32_t level;
     rt_kprintf("shutdown...\n");
diff --git a/libcpu/aarch64/common/cpu.h b/libcpu/aarch64/common/cpu.h
index 28044bb1853..e3efaec4852 100644
--- a/libcpu/aarch64/common/cpu.h
+++ b/libcpu/aarch64/common/cpu.h
@@ -56,8 +56,6 @@ extern struct cpu_ops_t cpu_ops_spin_tbl;
 
 #endif /* RT_USING_SMP */
 
-extern void rt_hw_cpu_shutdown(void);
-
 extern void (*system_off)(void);
 
 #endif /* __RT_HW_CPU_H__ */
\ No newline at end of file
diff --git a/libcpu/arc/em/cpuport.c b/libcpu/arc/em/cpuport.c
index 679e2e78eea..b7653a5c21a 100644
--- a/libcpu/arc/em/cpuport.c
+++ b/libcpu/arc/em/cpuport.c
@@ -29,14 +29,6 @@ struct init_stack_frame {
     rt_uint32_t r0;
 };
 
-/**
- * shutdown CPU
- */
-rt_weak void rt_hw_cpu_shutdown(void)
-{
-
-}
-
 rt_uint8_t *rt_hw_stack_init(void       *tentry,
                              void       *parameter,
                              rt_uint8_t *stack_addr,
diff --git a/libcpu/arm/AT91SAM7S/cpu.c b/libcpu/arm/AT91SAM7S/cpu.c
index d917083d0be..8cab991b6a7 100644
--- a/libcpu/arm/AT91SAM7S/cpu.c
+++ b/libcpu/arm/AT91SAM7S/cpu.c
@@ -16,23 +16,4 @@
  */
 /*@{*/
 
-/**
- * this function will reset CPU
- *
- */
-rt_weak void rt_hw_cpu_reset()
-{
-}
-
-/**
- * this function will shutdown CPU
- *
- */
-rt_weak void rt_hw_cpu_shutdown()
-{
-    rt_kprintf("shutdown...\n");
-
-    while (1);
-}
-
 /*@}*/
diff --git a/libcpu/arm/AT91SAM7X/cpu.c b/libcpu/arm/AT91SAM7X/cpu.c
index bb60ce4565c..bac6dc5cdb5 100644
--- a/libcpu/arm/AT91SAM7X/cpu.c
+++ b/libcpu/arm/AT91SAM7X/cpu.c
@@ -16,23 +16,5 @@
  */
 /*@{*/
 
-/**
- * this function will reset CPU
- *
- */
-rt_weak void rt_hw_cpu_reset()
-{
-}
-
-/**
- * this function will shutdown CPU
- *
- */
-rt_weak void rt_hw_cpu_shutdown()
-{
-    rt_kprintf("shutdown...\n");
-
-    while (1);
-}
 
 /*@}*/
diff --git a/libcpu/arm/am335x/cpu.c b/libcpu/arm/am335x/cpu.c
index d91542fbb9e..7fcbc06d1ae 100644
--- a/libcpu/arm/am335x/cpu.c
+++ b/libcpu/arm/am335x/cpu.c
@@ -182,7 +182,7 @@ rt_base_t rt_hw_cpu_dcache_status()
  *  shutdown CPU
  *
  */
-rt_weak void rt_hw_cpu_shutdown()
+void rt_hw_cpu_shutdown(void)
 {
     rt_base_t level;
     rt_kprintf("shutdown...\n");
diff --git a/libcpu/arm/arm926/cpuport.c b/libcpu/arm/arm926/cpuport.c
index e4d70e1f6f6..45ed6d7e835 100644
--- a/libcpu/arm/arm926/cpuport.c
+++ b/libcpu/arm/arm926/cpuport.c
@@ -146,7 +146,7 @@ rt_base_t rt_hw_cpu_dcache_status()
  * reset cpu by dog's time-out
  *
  */
-rt_weak void rt_hw_cpu_reset()
+void rt_hw_cpu_reset()
 {
 
     rt_kprintf("Restarting system...\n");
@@ -161,7 +161,7 @@ rt_weak void rt_hw_cpu_reset()
  *  shutdown CPU
  *
  */
-rt_weak void rt_hw_cpu_shutdown()
+void rt_hw_cpu_shutdown(void)
 {
     rt_base_t level;
     rt_kprintf("shutdown...\n");
diff --git a/libcpu/arm/armv6/cpuport.c b/libcpu/arm/armv6/cpuport.c
index ea9b385b4ea..f7d6ab44f6b 100644
--- a/libcpu/arm/armv6/cpuport.c
+++ b/libcpu/arm/armv6/cpuport.c
@@ -147,7 +147,7 @@ rt_base_t rt_hw_cpu_dcache_status()
  * reset cpu by dog's time-out
  *
  */
-rt_weak void rt_hw_cpu_reset()
+void rt_hw_cpu_reset()
 {
 
     rt_kprintf("Restarting system...\n");
@@ -162,7 +162,7 @@ rt_weak void rt_hw_cpu_reset()
  *  shutdown CPU
  *
  */
-rt_weak void rt_hw_cpu_shutdown()
+void rt_hw_cpu_shutdown(void)
 {
     rt_base_t level;
     rt_kprintf("shutdown...\n");
diff --git a/libcpu/arm/cortex-a/cpuport.c b/libcpu/arm/cortex-a/cpuport.c
index ec523f2aa7b..ac947fb8233 100644
--- a/libcpu/arm/cortex-a/cpuport.c
+++ b/libcpu/arm/cortex-a/cpuport.c
@@ -74,7 +74,7 @@ void rt_hw_spin_unlock(rt_hw_spinlock_t *lock)
 /*@{*/
 
 /** shutdown CPU */
-rt_weak void rt_hw_cpu_shutdown()
+void rt_hw_cpu_shutdown(void)
 {
     rt_base_t level;
     rt_kprintf("shutdown...\n");
diff --git a/libcpu/arm/cortex-m0/cpuport.c b/libcpu/arm/cortex-m0/cpuport.c
index 2d326364cfc..dfc2e74223a 100644
--- a/libcpu/arm/cortex-m0/cpuport.c
+++ b/libcpu/arm/cortex-m0/cpuport.c
@@ -131,7 +131,7 @@ void rt_hw_hard_fault_exception(struct exception_stack_frame *contex)
 /**
  * reset CPU
  */
-rt_weak void rt_hw_cpu_reset(void)
+void rt_hw_cpu_reset(void)
 {
     SCB_AIRCR  = SCB_RESET_VALUE;//((0x5FAUL << SCB_AIRCR_VECTKEY_Pos) |SCB_AIRCR_SYSRESETREQ_Msk);
 }
diff --git a/libcpu/arm/cortex-m23/cpuport.c b/libcpu/arm/cortex-m23/cpuport.c
index 7533f2811fe..f831db416d4 100644
--- a/libcpu/arm/cortex-m23/cpuport.c
+++ b/libcpu/arm/cortex-m23/cpuport.c
@@ -132,7 +132,7 @@ void rt_hw_hard_fault_exception(struct exception_stack_frame *contex)
 /**
  * reset CPU
  */
-rt_weak void rt_hw_cpu_reset(void)
+void rt_hw_cpu_reset(void)
 {
     SCB_AIRCR  = SCB_RESET_VALUE;//((0x5FAUL << SCB_AIRCR_VECTKEY_Pos) |SCB_AIRCR_SYSRESETREQ_Msk);
 }
diff --git a/libcpu/arm/cortex-m3/cpuport.c b/libcpu/arm/cortex-m3/cpuport.c
index 65fc7969c6e..8f5616a3dd2 100644
--- a/libcpu/arm/cortex-m3/cpuport.c
+++ b/libcpu/arm/cortex-m3/cpuport.c
@@ -343,20 +343,10 @@ void rt_hw_hard_fault_exception(struct exception_info * exception_info)
     while (1);
 }
 
-/**
- * shutdown CPU
- */
-rt_weak void rt_hw_cpu_shutdown(void)
-{
-    rt_kprintf("shutdown...\n");
-
-    RT_ASSERT(0);
-}
-
 /**
  * reset CPU
  */
-rt_weak void rt_hw_cpu_reset(void)
+void rt_hw_cpu_reset(void)
 {
     SCB_AIRCR = SCB_RESET_VALUE;
 }
diff --git a/libcpu/arm/cortex-m33/cpuport.c b/libcpu/arm/cortex-m33/cpuport.c
index 9c110c7f558..749932c609a 100644
--- a/libcpu/arm/cortex-m33/cpuport.c
+++ b/libcpu/arm/cortex-m33/cpuport.c
@@ -485,20 +485,10 @@ void rt_hw_hard_fault_exception(struct exception_info *exception_info)
     while (1);
 }
 
-/**
- * shutdown CPU
- */
-rt_weak void rt_hw_cpu_shutdown(void)
-{
-    rt_kprintf("shutdown...\n");
-
-    RT_ASSERT(0);
-}
-
 /**
  * reset CPU
  */
-rt_weak void rt_hw_cpu_reset(void)
+void rt_hw_cpu_reset(void)
 {
     SCB_AIRCR = SCB_RESET_VALUE;
 }
diff --git a/libcpu/arm/cortex-m4/cpuport.c b/libcpu/arm/cortex-m4/cpuport.c
index 1674d846e0e..9504008e36d 100644
--- a/libcpu/arm/cortex-m4/cpuport.c
+++ b/libcpu/arm/cortex-m4/cpuport.c
@@ -428,20 +428,10 @@ void rt_hw_hard_fault_exception(struct exception_info *exception_info)
     while (1);
 }
 
-/**
- * shutdown CPU
- */
-rt_weak void rt_hw_cpu_shutdown(void)
-{
-    rt_kprintf("shutdown...\n");
-
-    RT_ASSERT(0);
-}
-
 /**
  * reset CPU
  */
-rt_weak void rt_hw_cpu_reset(void)
+void rt_hw_cpu_reset(void)
 {
     SCB_AIRCR = SCB_RESET_VALUE;
 }
diff --git a/libcpu/arm/cortex-m7/cpuport.c b/libcpu/arm/cortex-m7/cpuport.c
index 14fee85262c..d4a14decc97 100644
--- a/libcpu/arm/cortex-m7/cpuport.c
+++ b/libcpu/arm/cortex-m7/cpuport.c
@@ -427,20 +427,10 @@ void rt_hw_hard_fault_exception(struct exception_info *exception_info)
     while (1);
 }
 
-/**
- * shutdown CPU
- */
-rt_weak void rt_hw_cpu_shutdown(void)
-{
-    rt_kprintf("shutdown...\n");
-
-    RT_ASSERT(0);
-}
-
 /**
  * reset CPU
  */
-rt_weak void rt_hw_cpu_reset(void)
+void rt_hw_cpu_reset(void)
 {
     SCB_AIRCR = SCB_RESET_VALUE;
 }
diff --git a/libcpu/arm/cortex-r4/cpu.c b/libcpu/arm/cortex-r4/cpu.c
index 2741bfef9b5..fa60a0cf5ed 100644
--- a/libcpu/arm/cortex-r4/cpu.c
+++ b/libcpu/arm/cortex-r4/cpu.c
@@ -16,25 +16,6 @@
  */
 /*@{*/
 
-/**
- * this function will reset CPU
- *
- */
-rt_weak void rt_hw_cpu_reset()
-{
-}
-
-/**
- * this function will shutdown CPU
- *
- */
-rt_weak void rt_hw_cpu_shutdown()
-{
-    rt_kprintf("shutdown...\n");
-
-    while (1);
-}
-
 #ifdef __TI_COMPILER_VERSION__
 #ifdef RT_USING_CPU_FFS
 int __rt_ffs(int value)
diff --git a/libcpu/arm/dm36x/cpuport.c b/libcpu/arm/dm36x/cpuport.c
index 915c79c34f9..b25e6b7f439 100644
--- a/libcpu/arm/dm36x/cpuport.c
+++ b/libcpu/arm/dm36x/cpuport.c
@@ -145,7 +145,7 @@ rt_base_t rt_hw_cpu_dcache_status()
  * reset cpu by dog's time-out
  *
  */
-rt_weak void rt_hw_cpu_reset()
+void rt_hw_cpu_reset()
 {
 
     rt_kprintf("Restarting system...\n");
@@ -160,7 +160,7 @@ rt_weak void rt_hw_cpu_reset()
  *  shutdown CPU
  *
  */
-rt_weak void rt_hw_cpu_shutdown()
+void rt_hw_cpu_shutdown(void)
 {
     rt_base_t level;
     rt_kprintf("shutdown...\n");
diff --git a/libcpu/arm/lpc214x/cpuport.c b/libcpu/arm/lpc214x/cpuport.c
index de5a900a672..4b8896aa73f 100644
--- a/libcpu/arm/lpc214x/cpuport.c
+++ b/libcpu/arm/lpc214x/cpuport.c
@@ -159,25 +159,6 @@ rt_isr_handler_t rt_hw_interrupt_install(int vector, rt_isr_handler_t handler,
     return old_handler;
 }
 
-/**
- * this function will reset CPU
- *
- */
-rt_weak void rt_hw_cpu_reset(void)
-{
-}
-
-/**
- * this function will shutdown CPU
- *
- */
-rt_weak void rt_hw_cpu_shutdown()
-{
-    rt_kprintf("shutdown...\n");
-
-    while (1);
-}
-
 void rt_hw_trap_irq(void)
 {
     int irqno;
diff --git a/libcpu/arm/lpc24xx/cpu.c b/libcpu/arm/lpc24xx/cpu.c
index 9e19cbf73ce..5f0987f9675 100644
--- a/libcpu/arm/lpc24xx/cpu.c
+++ b/libcpu/arm/lpc24xx/cpu.c
@@ -16,23 +16,4 @@
  */
 /*@{*/
 
-/**
- * this function will reset CPU
- *
- */
-rt_weak void rt_hw_cpu_reset()
-{
-}
-
-/**
- * this function will shutdown CPU
- *
- */
-rt_weak void rt_hw_cpu_shutdown()
-{
-    rt_kprintf("shutdown...\n");
-
-    while (1);
-}
-
 /*@}*/
diff --git a/libcpu/arm/realview-a8-vmm/cpu.c b/libcpu/arm/realview-a8-vmm/cpu.c
index 95c122f1d2b..0eee5a70ee0 100644
--- a/libcpu/arm/realview-a8-vmm/cpu.c
+++ b/libcpu/arm/realview-a8-vmm/cpu.c
@@ -17,17 +17,4 @@
  */
 /*@{*/
 
-/** shutdown CPU */
-rt_weak void rt_hw_cpu_shutdown()
-{
-    rt_base_t level;
-    rt_kprintf("shutdown...\n");
-
-    level = rt_hw_interrupt_disable();
-    while (level)
-    {
-        RT_ASSERT(0);
-    }
-}
-
 /*@}*/
diff --git a/libcpu/arm/s3c24x0/cpu.c b/libcpu/arm/s3c24x0/cpu.c
index 88208efc9bf..41e9c4a78b0 100644
--- a/libcpu/arm/s3c24x0/cpu.c
+++ b/libcpu/arm/s3c24x0/cpu.c
@@ -148,7 +148,7 @@ rt_base_t rt_hw_cpu_dcache_status()
  * reset cpu by dog's time-out
  *
  */
-rt_weak void rt_hw_cpu_reset()
+void rt_hw_cpu_reset()
 {
     /* Disable all interrupt except the WDT */
     INTMSK = (~((rt_uint32_t)1 << INTWDT));
@@ -167,20 +167,5 @@ rt_weak void rt_hw_cpu_reset()
     /* NEVER REACHED */
 }
 
-/**
- *  shutdown CPU
- *
- */
-rt_weak void rt_hw_cpu_shutdown()
-{
-    rt_base_t level;
-    rt_kprintf("shutdown...\n");
-
-    level = rt_hw_interrupt_disable();
-    while (level)
-    {
-        RT_ASSERT(0);
-    }
-}
 
 /*@}*/
diff --git a/libcpu/arm/s3c44b0/cpu.c b/libcpu/arm/s3c44b0/cpu.c
index e64c6769d6f..8bda7e365c3 100644
--- a/libcpu/arm/s3c44b0/cpu.c
+++ b/libcpu/arm/s3c44b0/cpu.c
@@ -96,23 +96,4 @@ rt_base_t rt_hw_cpu_dcache_status()
     return rt_hw_cpu_icache_status();
 }
 
-/**
- * this function will reset CPU
- *
- */
-rt_weak void rt_hw_cpu_reset()
-{
-}
-
-/**
- * this function will shutdown CPU
- *
- */
-rt_weak void rt_hw_cpu_shutdown()
-{
-    rt_kprintf("shutdown...\n");
-
-    while (1);
-}
-
 /*@}*/
diff --git a/libcpu/arm/sep4020/cpu.c b/libcpu/arm/sep4020/cpu.c
index c488686e2dd..2ceb1e2ae75 100644
--- a/libcpu/arm/sep4020/cpu.c
+++ b/libcpu/arm/sep4020/cpu.c
@@ -152,7 +152,7 @@ rt_base_t rt_hw_cpu_dcache_status()
  * reset cpu by dog's time-out
  *
  */
-rt_weak void rt_hw_cpu_reset()
+void rt_hw_cpu_reset()
 {
 
     /* enable watchdog */
@@ -169,20 +169,4 @@ rt_weak void rt_hw_cpu_reset()
     /* NEVER REACHED */
 }
 
-/**
- *  shutdown CPU
- *
- */
-rt_weak void rt_hw_cpu_shutdown()
-{
-    rt_base_t level;
-    rt_kprintf("shutdown...\n");
-
-    level = rt_hw_interrupt_disable();
-    while (level)
-    {
-        RT_ASSERT(RT_NULL);
-    }
-}
-
 /*@}*/
diff --git a/libcpu/arm/zynqmp-r5/cpu.c b/libcpu/arm/zynqmp-r5/cpu.c
index 788df69d6c3..c14a29e9bf2 100644
--- a/libcpu/arm/zynqmp-r5/cpu.c
+++ b/libcpu/arm/zynqmp-r5/cpu.c
@@ -18,19 +18,3 @@ void rt_hw_cpu_reset()
     while (1);  /* loop forever and wait for reset to happen */
     /* NEVER REACHED */
 }
-
-/**
- *  shutdown CPU
- *
- */
-void rt_hw_cpu_shutdown()
-{
-    rt_base_t level;
-    rt_kprintf("shutdown...\n");
-
-    level = rt_hw_interrupt_disable();
-    while (level)
-    {
-        RT_ASSERT(0);
-    }
-}
diff --git a/libcpu/avr32/uc3/cpu.c b/libcpu/avr32/uc3/cpu.c
index 37b0828cf83..a6d187ef412 100644
--- a/libcpu/avr32/uc3/cpu.c
+++ b/libcpu/avr32/uc3/cpu.c
@@ -15,24 +15,6 @@
  */
 /*@{*/
 
-/**
- * reset cpu by dog's time-out
- *
- */
-rt_weak void rt_hw_cpu_reset()
-{
-    /*NOTREACHED*/
-}
-
-/**
- *  shutdown CPU
- *
- */
-void rt_hw_cpu_shutdown()
-{
-    rt_kprintf("shutdown...\n");
 
-    RT_ASSERT(0);
-}
 
 /*@}*/
diff --git a/libcpu/mips/gs232/cpuport.c b/libcpu/mips/gs232/cpuport.c
index a4a6728ccd6..c473eed50ca 100644
--- a/libcpu/mips/gs232/cpuport.c
+++ b/libcpu/mips/gs232/cpuport.c
@@ -23,7 +23,7 @@
  * this function will reset CPU
  *
  */
-rt_weak void rt_hw_cpu_reset(void)
+void rt_hw_cpu_reset(void)
 {
     /* open the watch-dog */
     WDT_EN = 0x01;      /* watch dog enable */
@@ -34,18 +34,6 @@ rt_weak void rt_hw_cpu_reset(void)
     while (1);
 }
 
-/**
- * this function will shutdown CPU
- *
- */
-rt_weak void rt_hw_cpu_shutdown(void)
-{
-    rt_kprintf("shutdown...\n");
-
-    while (1);
-}
-
-
 #define Hit_Invalidate_I    0x10
 #define Hit_Invalidate_D    0x11
 #define CONFIG_SYS_CACHELINE_SIZE   32
diff --git a/libcpu/risc-v/common/cpuport.c b/libcpu/risc-v/common/cpuport.c
index 25c884b2e54..502a8fcbf3d 100644
--- a/libcpu/risc-v/common/cpuport.c
+++ b/libcpu/risc-v/common/cpuport.c
@@ -97,16 +97,3 @@ rt_weak void rt_hw_context_switch_interrupt(rt_ubase_t from, rt_ubase_t to, rt_t
     return ;
 }
 #endif /* end of RT_USING_SMP */
-
-/** shutdown CPU */
-rt_weak void rt_hw_cpu_shutdown()
-{
-    rt_base_t level;
-    rt_kprintf("shutdown...\n");
-
-    level = rt_hw_interrupt_disable();
-    while (level)
-    {
-        RT_ASSERT(0);
-    }
-}
diff --git a/libcpu/risc-v/t-head/c906/cpuport.c b/libcpu/risc-v/t-head/c906/cpuport.c
index 142a071362a..c4f88bdacd5 100644
--- a/libcpu/risc-v/t-head/c906/cpuport.c
+++ b/libcpu/risc-v/t-head/c906/cpuport.c
@@ -106,7 +106,7 @@ void rt_hw_context_switch_interrupt(rt_ubase_t from, rt_ubase_t to, rt_thread_t
 #endif /* end of RT_USING_SMP */
 
 /** shutdown CPU */
-void rt_hw_cpu_shutdown()
+void rt_hw_cpu_shutdown(void)
 {
     rt_uint32_t level;
     rt_kprintf("shutdown...\n");
diff --git a/libcpu/risc-v/virt64/cpuport.c b/libcpu/risc-v/virt64/cpuport.c
index 0979f227e85..33d9e83c046 100644
--- a/libcpu/risc-v/virt64/cpuport.c
+++ b/libcpu/risc-v/virt64/cpuport.c
@@ -108,7 +108,7 @@ void rt_hw_context_switch_interrupt(rt_ubase_t from, rt_ubase_t to, rt_thread_t
 #endif /* end of RT_USING_SMP */
 
 /** shutdown CPU */
-void rt_hw_cpu_shutdown()
+void rt_hw_cpu_shutdown(void)
 {
     rt_uint32_t level;
     rt_kprintf("shutdown...\n");
diff --git a/libcpu/rx/cpuport.c b/libcpu/rx/cpuport.c
index 3425b6b9c9c..37ee47c0423 100644
--- a/libcpu/rx/cpuport.c
+++ b/libcpu/rx/cpuport.c
@@ -174,17 +174,6 @@ void rt_hw_context_switch_interrupt(rt_uint32_t from, rt_uint32_t to)
     ENTER_INTERRUPT();
 }
 
-/**
- * shut down the chip
- *
- * @author LXZ (2014/11/8)
- */
-rt_weak void rt_hw_cpu_shutdown(void)
-{
-    rt_kprintf("shutdown...\n");
-
-    RT_ASSERT(0);
-}
 /**
  * switch to the first thread,it just call one time
  *
diff --git a/libcpu/ti-dsp/c28x/cpuport.c b/libcpu/ti-dsp/c28x/cpuport.c
index c1c11414134..ffb40fee776 100644
--- a/libcpu/ti-dsp/c28x/cpuport.c
+++ b/libcpu/ti-dsp/c28x/cpuport.c
@@ -158,16 +158,6 @@ int __rt_ffs(int value)
 }
 #endif
 
-/**
- * shutdown CPU
- */
-rt_weak void rt_hw_cpu_shutdown(void)
-{
-    rt_kprintf("shutdown...\n");
-
-    RT_ASSERT(0);
-}
-
 void rt_interrupt_enter(void)
 {
     rt_base_t level;
diff --git a/libcpu/ti-dsp/c6x/cpuport.c b/libcpu/ti-dsp/c6x/cpuport.c
index 31f1255a2dc..dccfab995a0 100644
--- a/libcpu/ti-dsp/c6x/cpuport.c
+++ b/libcpu/ti-dsp/c6x/cpuport.c
@@ -13,21 +13,6 @@
 
 #include "trap.h"
 
-/*------------ rt_hw_cpu_shutdown() function ----------------------------------
- * DESCRIPTION: Shutdown CPU
- * ARGUMENTS:
- * None
- * RETURNED VALUE: None
------------------------------------------------------------------------------*/
-rt_weak void rt_hw_cpu_shutdown(void)
-{
-    rt_kprintf("shutdown...\n");
-
-    rt_hw_interrupt_disable();
-
-    RT_ASSERT(0);
-}
-
 /*------------ nested_exception_handler() function ---------------------------
  * DESCRIPTION: Function handles Nested Exception
  * ARGUMENTS:
diff --git a/libcpu/unicore32/sep6200/cpu.c b/libcpu/unicore32/sep6200/cpu.c
index 26aa673d849..02ad39caa06 100644
--- a/libcpu/unicore32/sep6200/cpu.c
+++ b/libcpu/unicore32/sep6200/cpu.c
@@ -245,7 +245,7 @@ static void sep6200_poweroff(void)
  * reset cpu by dog's time-out
  *
  */
-rt_weak void rt_hw_cpu_reset()
+void rt_hw_cpu_reset()
 {
 
     rt_kprintf("Soft reset, Restarting system...\n");
@@ -260,7 +260,7 @@ rt_weak void rt_hw_cpu_reset()
  *  shutdown CPU
  *
  */
-rt_weak void rt_hw_cpu_shutdown()
+void rt_hw_cpu_shutdown(void)
 {
     rt_base_t level;
     rt_kprintf("shutdown...\n");
diff --git a/libcpu/xilinx/microblaze/cpu.c b/libcpu/xilinx/microblaze/cpu.c
index 70a908a22d2..1fa99810e3f 100755
--- a/libcpu/xilinx/microblaze/cpu.c
+++ b/libcpu/xilinx/microblaze/cpu.c
@@ -10,22 +10,3 @@
 
 #include <rtthread.h>
 
-/**
- * this function will reset CPU
- *
- */
-rt_weak void rt_hw_cpu_reset()
-{
-}
-
-/**
- * this function will shutdown CPU
- *
- */
-rt_weak void rt_hw_cpu_shutdown()
-{
-    rt_kprintf("shutdown...\n");
-
-    while (1);
-}
-
diff --git a/src/kservice.c b/src/kservice.c
index b29497c765e..1a8c047120a 100644
--- a/src/kservice.c
+++ b/src/kservice.c
@@ -66,20 +66,34 @@ static rt_device_t _console_device = RT_NULL;
 rt_weak void rt_hw_us_delay(rt_uint32_t us)
 {
     (void) us;
-    LOG_D("rt_hw_us_delay() doesn't support for this board."
+    LOG_W("rt_hw_us_delay() doesn't support for this board."
         "Please consider implementing rt_hw_us_delay() in another file.");
 }
 
-rt_weak const char *rt_hw_cpu_arch(void)
+rt_weak void rt_hw_cpu_reset(void)
 {
-    return "unknown";
+    LOG_W("rt_hw_cpu_reset() doesn't support for this board."
+        "Please consider implementing rt_hw_cpu_reset() in another file.");
+    return;
 }
 
-rt_weak void rt_hw_cpu_reset(void)
+rt_weak void rt_hw_cpu_shutdown(void)
 {
-    LOG_D("rt_hw_cpu_reset() doesn't support for this board."
+    rt_base_t level;
+    LOG_I("CPU shutdown...");
+    LOG_W("Using default rt_hw_cpu_shutdown()."
         "Please consider implementing rt_hw_cpu_reset() in another file.");
-    return ;
+    level = rt_hw_interrupt_disable();
+    while (level)
+    {
+        RT_ASSERT(RT_NULL);
+    }
+    return;
+}
+
+rt_weak const char *rt_hw_cpu_arch(void)
+{
+    return "unknown";
 }
 
 static const char* rt_errno_strs[] =