5 qboot跳转app后卡在app的系统调用处，有人碰到过吗？

发布于 2021-11-18 15:14:45 浏览：1357 订阅该版

首先是boot工程的配置：
![boot1.jpg](https://oss-club.rt-thread.org/uploads/20211118/437b2f9d6c398d40e1cae3b21ffb16c5.jpg)
![boot2.jpg](https://oss-club.rt-thread.org/uploads/20211118/d3ffa2925a130b3c4c1afd0516cc8284.jpg)
![boot3.jpg](https://oss-club.rt-thread.org/uploads/20211118/3e803ee98f9411f895e368d71a63c1ea.jpg)
然后是app工程的配置：
![app1.jpg](https://oss-club.rt-thread.org/uploads/20211118/96cd6f93d7fd9d42d0ab84d4d01b077f.jpg)
![app2.jpg](https://oss-club.rt-thread.org/uploads/20211118/0e290e1a1103baa91848aae665381b0f.jpg)
![app3.jpg](https://oss-club.rt-thread.org/uploads/20211118/5349e8cbee59595040cc1e1e734c6d7a.jpg)
注：boot和app工程中，fal配置内部flash的地址和大小都和对应的#define ROM_START              、#define ROM_SIZE保持一致

现象：
如果boot的跳转函数如下，qboot会一直重启
```
void qbt_jump_to_app(void)
{
    typedef void (*app_func_t)(void);
    u32 app_addr = QBOOT_APP_ADDR;
    u32 stk_addr = *((__IO uint32_t *)app_addr);
    app_func_t app_func = (app_func_t)(*((__IO uint32_t *)(app_addr + 4)));

if ((((u32)app_func & 0xff000000) != 0x08000000) || (((stk_addr & 0x2ff00000) != 0x20000000) && ((stk_addr & 0x2ff00000) != 0x24000000)))
    {
        LOG_E("No legitimate application.");
        return;
    }

rt_kprintf("Jump to application running ... \n");
    rt_thread_mdelay(200);
    
    __disable_irq();
    HAL_DeInit();

for(int i=0; i<128; i++)
    {
        HAL_NVIC_DisableIRQ(i);
        HAL_NVIC_ClearPendingIRQ(i);
    }

SysTick->CTRL = 0;
    SysTick->LOAD = 0;
    SysTick->VAL = 0;

HAL_RCC_DeInit();
    
    __set_CONTROL(0);
    __set_MSP(stk_addr);
    
    app_func();//Jump to application running
    
    LOG_E("Qboot jump to application fail.");
}
```  
![image.png](https://oss-club.rt-thread.org/uploads/20211118/673aa6d01ea2c1de007647ba8f328992.png)

当我把HAL_DeInit();注释掉，其他不变，现象如下图
![image.png](https://oss-club.rt-thread.org/uploads/20211118/6519f83a2195aa924fa66bd3a2733fa0.png)

这是我app中注释的代码段
```
void rt_application_init(void)
{
    rt_thread_t tid;

#ifdef RT_USING_HEAP
    tid = rt_thread_create("main", main_thread_entry, RT_NULL,
                           RT_MAIN_THREAD_STACK_SIZE, RT_MAIN_THREAD_PRIORITY, 20);
    RT_ASSERT(tid != RT_NULL);
#else
    rt_err_t result;

tid = &main_thread;
    result = rt_thread_init(tid, "main", main_thread_entry, RT_NULL,
                            main_stack, sizeof(main_stack), RT_MAIN_THREAD_PRIORITY, 20);
    RT_ASSERT(result == RT_EOK);

/* if not define RT_USING_HEAP, using to eliminate the warning */
    (void)result;
#endif

rt_thread_startup(tid);
}

int rtthread_startup(void)
{
    rt_hw_interrupt_disable();

/* board level initialization
     * NOTE: please initialize heap inside board initialization.
     */
    rt_hw_board_init();

/* show RT-Thread version */
    rt_show_version();

/* timer system initialization */
    rt_system_timer_init();

/* scheduler system initialization */
    rt_system_scheduler_init();

#ifdef RT_USING_SIGNALS
    /* signal system initialization */
    rt_system_signal_init();
#endif

/* create init_thread */
    rt_application_init();

/* timer thread initialization */
    rt_system_timer_thread_init();

/* idle thread initialization */
    rt_thread_idle_init();
    rt_kprintf("rt_thread_idle_init finshed\n");
#ifdef RT_USING_SMP
    rt_hw_spin_lock(&_cpus_lock);
#endif /*RT_USING_SMP*/
    /* start scheduler */
    rt_system_scheduler_start();
    rt_kprintf("rt_system_scheduler_start finshed\n");
    /* never reach here */
    return 0;
}
```