Bootloader RTX jump RTX app

Had the same issue.

// top of src

__asm void Jump_To_Application (uint32_t AppAddr)
{
LDR SP, [R0]
LDR PC, [R0, #4]
}

// At your jump

SysTick->CTRL &= ~0x00000002;
SCB->VTOR = 0x1C000000;
LPC_CREG->M3MEMMAP = (uint32_t) 0x1C000000;
__set_CONTROL(0x00000000);
Jump_To_Application(0x1C000000);

Had the same issue.

// top of src

__asm void Jump_To_Application (uint32_t AppAddr)
{
LDR SP, [R0]
LDR PC, [R0, #4]
}

// At your jump

SysTick->CTRL &= ~0x00000002;
SCB->VTOR = 0x1C000000;
LPC_CREG->M3MEMMAP = (uint32_t) 0x1C000000;
__set_CONTROL(0x00000000);
Jump_To_Application(0x1C000000);

I try this piece of code, but I always can't jump..

Here is my code :

__asm void boot_jump( uint32_t address )
{
LDR SP, [R0]
LDR PC, [R0, #4]
}

void execute_user_code(void)
{
/* Change the Vector Table to the USER_FLASH_START
in case the user application uses interrupts */

//__disable_irq();

SysTick->CTRL &= ~0x00000002;

SCB->VTOR = (uint32_t)USER_FLASH_START;

boot_jump(USER_FLASH_START);

}

/*----------------------------------------------------------------------------
Main Thread 'main': Run Network
*---------------------------------------------------------------------------*/
int main (void)
{

if(Flash_ReadFW()==0)
{
execute_user_code();
}

osKernelInitialize (); // initialize RTOS kernel

hardware_init();
LED_Initialize ();
Buttons_Initialize ();
debug_printf("\r\n\r\nBootloader by - GB\r\n"); // ne pas oublier de cocher MicroLIB dans les options du projet !!!

osThreadNew(blinky_Thread, NULL, NULL); // Create application main thread
osThreadNew(LAN_Thread, NULL, NULL); // Create application main thread


osKernelStart (); // start kernel with job2 execution
while(1);
}

bootloader RTX is placed at 0x0 

User RTX APP is placed at 0x00080000 => don't jump

Blinky LED placed at 0x00080000 too => jump

I need some help 

ScottH gave you the code you need, you left out the:

__set_CONTROL(0x00000000);

This is needed if you are jumping from a thread in your bootloader. If your in a thread, the process stack will be used. This instructions sets the main stack as the active stack which is needed when you jump to the reset vector of the application as you want to use the main stack in the Reset Handler.

Thank you for your answer

I understand this is needed if i am in a thread. But the processor is reseted before jumping to the application, so i am not in a thread.

In the debug viewer the processor is running from the msp.

What should verify before the jump?

Are you using OS2?  If so, I think the main loop is a special thread.  I had the same issue.  My older bootloader ran fine with the older OS but as soon as I transitioned to OS2 it stopped working.  That is why the __set_CONTROL(0x00000000); was key to fixing the issue.  I was stuck in the mud until Jim got me out. Try the change.

I use os2

I will try again with __set_CONTROL(0x00000000);

My question is why the jump works with a simple blind LED firmware but not with a rtx firmware,

I will keep you informed

Hello !

I try __set_CONTROL(0x00000000);  but this is the same issue

In attachment, the screen shot of the debug bootloader after jump.

also, i show:

• The main function of the user application who works with the kinetis bootloader.
• The main function of the blinky LED who works with my rtx bootloader

I am lost..

You seem to be in Handler Mode. You need to be in Thread Mode. 

MSP, Prividged, Thread Mode.

__set_control(0x00000000); est the privileged mode, i dis but drill in handler mode

Sorry. You are in a Hard Fault so obviously you are in Handler Mode. Maybe see what state you are in just before the jump to the application.

To correct jumping you also will need disable interrupts and clear pending interrupts. Also don`t forget initialize stack/vectors and etc in user app. 

for example:

void bootloader_run_application()

{

// Stopping active threads, RTOS etc..

// Disabling CPU interrupts

cpu_irq_disable();  

// Clear Pending interrupts 

cpu_pending_irq_clear();

// Execute your application 

execute_app();

// infinite loop

while(1);

}

void execute_app(void)
{
void (*user_code_entry)(void) = (void (*)(void))(USER_APP_ADDR);

user_code_entry();
}