topic Re: JumpAppFrom Boot ERROR in S32K

JumpAppFrom Boot ERROR

liangliu — Thu, 04 Jan 2024 08:22:55 GMT

Hello Team,

Currently I'm working in bootloader development activity for S32K116. I've referred the SDK of Unified bootloader Demo source .The App entrypoint is 0x0000F204.When the pc jump to app from boot ,it was stucked at defaultISR. also I`ve disabled watchdog.

So, could someone help me in fixing the issue with proper solution. thanks

Re: JumpAppFrom Boot ERROR

danielmartynek — Thu, 04 Jan 2024 12:07:37 GMT

Hi @liangliu,

This is probably a fault exception.

Add this function into the bootloader.

void HardFault_Handler(void) { while(1){} }

Before the jump, can you read the flash memory of the application code?

How is the VTOR of the application alligned?

https://developer.arm.com/documentation/dui0662/b/Cortex-M0--Peripherals/System-Control-Block/Vector-Table-Offset-Register?lang=en

Regards,

Daniel

Re: JumpAppFrom Boot ERROR

liangliu — Fri, 05 Jan 2024 01:48:05 GMT

Hi,@danielmartynek,

I read the flash memory before the jump

this is APP ISR table

The following is the FBL interrupt vector table.

Re: JumpAppFrom Boot ERROR

liangliu — Fri, 05 Jan 2024 06:27:00 GMT

The following is the FBL VTOR Offset.

Re: JumpAppFrom Boot ERROR

danielmartynek — Fri, 05 Jan 2024 14:56:24 GMT

Hi @liangliu,

I understand that the reset routine of the application is at 0xF610.

Can you open the memory in the disassembly window and to check if the routine is there before the jump?

Regards,

Daniel