uniform code writing-disable interrupt

libcpu/aarch64/common/cpu.c

@@ -98,7 +98,7 @@ void rt_hw_spin_unlock(rt_hw_spinlock_t *lock)
 /** shutdown CPU */
 RT_WEAK void rt_hw_cpu_shutdown()
 {
-    rt_uint32_t level;
+    register rt_int32_t level;
     rt_kprintf("shutdown...\n");
 
     level = rt_hw_interrupt_disable();

libcpu/aarch64/common/mmu.c

@@ -240,7 +240,7 @@ void rt_hw_mmu_init(void)
 int rt_hw_mmu_map(unsigned long addr, unsigned long size, unsigned long attr)
 {
     int ret;
-    rt_ubase_t level;
+    rt_base_t level;
 
     level = rt_hw_interrupt_disable();
     ret = rt_hw_mmu_setmtt(addr, addr + size, addr, attr);