Hardfault :STM32H750 Customer Bootloader Jump to Application

[Andex]

Hello everyone:

I have a problem with my project.

My project is to use STM32H750UBKx  + Keil MDK5 IDE to design.
The customer bootloader runs in Flash, and The application runs in Quad SPI NOR Flash (or SRAM).

Problem: When I execute the code "JumpToApplication();", it will be "Hardfault"

Thanks!

more information:

0. I have checked that the data in the SRAM(0x30000000) is the same as the bin content compiled by my application.

1. The fault reporter(debug):

2.My Bootloader code are:

void RunApplication(void)
{
    extern volatile uint8_t arrAppBuff[100 * 1024];
    MemCpy((uint8_t *)arrAppBuff, (uint8_t *)0x90000000, 100*1024);

    uint32_t nAppAddr = 0x30000000;
    uint32_t  JumpAddress = *(__IO uint32_t*)((nAppAddr) + 4);
    pFunction JumpToApplication = (pFunction)JumpAddress;
    printf("Jump!\n");

    HAL_RCC_DeInit();
    HAL_DeInit();
    SysTick->CTRL = 0; 
    SysTick->LOAD = 0;     
    SysTick->VAL = 0; 
    
    SCB->VTOR = (nAppAddr);
    __set_PRIMASK(1);
    __set_MSP(*(__IO uint32_t*)(nAppAddr));
    __set_CONTROL(0);

    JumpToApplication();  
}

 3. Application code:

int main(void)
{
    __disable_irq();
    SCB->VTOR = 0x30000000;
    __enable_irq();
    SCB_EnableICache();
    SCB_EnableDCache();
    HAL_Init();
    SystemClock_Config();
    PeriphCommonClock_Config();
}

4. Application 's  scatter file:

LR_IROM1 0x30000000 0x00048000  {    ; load region size_region
  ER_IROM1 0x30000000 0x00048000  {  ; load address = execution address
   *.o (RESET, +First)
   *(InRoot$$Sections)
   .ANY (+RO)
   .ANY (+XO)
  }

  RW_IRAM_DTCM 0x20000000 0x00020000  {  ; 128k
   .ANY (+RW +ZI)
   ;* (.ram.tcm)
   * (.DTCMshared, +Last)  
  }
  RW_IRAM_AXI 0x24000000 0x0007C000  {   ;512k - 16k = 496k
   .ANY (+RW +ZI)
   * (.sram123_shared, +Last) 
  }

    RW_IRAM4 0x38000000 0x00010000  {      ;64k
   .ANY (+RW +ZI)
  }
}

[Pavel A.]

Looks like jump to 0 (corrupted pointers or variables on stack?). Try to debug, single step from your bootloader to few first instructions of the app reset handler.

[Andex · Accepted solution]

LOL, The reason is my customer bootloader is use "V6.16 ARM compiler", and the application uses "V5.06 ARM compiler".

Boot compiler:

App compiler:

[Piranha]

Compiler version is not the cause the issue. Your broken code is!

https://community.st.com/t5/stm32-mcus/how-to-jump-to-system-bootloader-from-application-code-on-stm32/tac-p/568644/highlight/true#M475