CCS/TMS570LC4357: TMS570LC4357: bootloader application jump leads to prefetchEntry

jiang chenglong

Part Number: TMS570LC4357
Other Parts Discussed in Thread: HALCOGEN

Tool/software: Code Composer Studio

Hi community,

Recently I am working on the UART boot loader on TMS570LC4357. I found a example here https://e2e.ti.com/support/microcontrollers/hercules/f/312/p/699892/2605850?tisearch=e2e-sitesearch&keymatch=TMS570LC4357%20UART%20bootloader#2605850

here is the bootloader preject.7180.TMS570LC4357_UART_Boot.rar

The example boot loader works fine. But, when execution jumps to the applications, the prefetchEntry loops forever.

JumpAddress = (uint32_t)APP_START_ADDRESS; // #define APP_START_ADDRESS 0x00200100
((void (*)(void))JumpAddress)();

I try to modify the link file of the application projects, but prefetchEntry loops all the same. Are there some manuals guiding to modify the link file both bootlaoder and application project?

Here are my application projects, one with FreeRTOS and the other without.

7206.TMS570LC_TestWithFreeRTOS.rar

5635.TMS570LC_TestRare.rar

HalCoGen version is 4.07.01, those projects are tested with hercules HDK

over 6 years ago

0 QJ Wang over 6 years ago

TI__Guru**** 196926 points

Hello,

A prefetch abort usually means that you are accessing a memory address that is out of range. Can you read out the CPU instruction fault status register and instruction fault address register?

0 jiang chenglong over 6 years ago in reply to QJ Wang

Prodigy 150 points

Thanks a lot. Here is the values when prefetchEntry happens.

0 jiang chenglong over 6 years ago in reply to QJ Wang

Prodigy 150 points

Could you give some manuals about how to handle the link file?

0 QJ Wang over 6 years ago in reply to jiang chenglong

TI__Guru**** 196926 points

Hello Jiang,

They are CP15 registers:

Do you mean linker command file?

0 jiang chenglong over 6 years ago in reply to QJ Wang

Prodigy 150 points

Yes, I mean the linker command file.

0 QJ Wang over 6 years ago in reply to jiang chenglong

TI__Guru**** 196926 points

Hello Jiang,

I developed a application example. Please use it as reference for testing:

https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/312/6622.TMS570LC4357_5F00_FreeRTOS_5F00_BTL_5F00_Application.7z

0 jiang chenglong over 6 years ago in reply to QJ Wang

Prodigy 150 points

OK，thank you very much, I will report later.

0 jiang chenglong over 6 years ago in reply to QJ Wang

Prodigy 150 points

Hi Wang,

the application example you provided didn't work. I tested the project with HERCULES HDK (a green board).

First, I debug the application project directly without boot loader, the application failed in main funtion when creating Task1.

/* Create Task 1 */
if (xTaskCreate(vTask1,"Task1", configMINIMAL_STACK_SIZE, NULL, 1, &xTask1Handle) != pdTRUE)
{
/* Task could not be created */
while(1);
}

when run the line BaseType_t xRunningPrivileged = prvRaisePrivilege(); in the funtion MPU_xTaskCreate() the application crashed.

Then, I try the application with UART boot loader. When application download finished, type "3" in the terminal, prefetchEntry occurs.

0 QJ Wang over 6 years ago in reply to jiang chenglong

TI__Guru**** 196926 points

Hi Jiang,

Have you solved the problem with the freeRTOS?

0 jiang chenglong over 6 years ago in reply to QJ Wang

Prodigy 150 points

No, I'm on a business trip, busy with something else.

0 QJ Wang over 6 years ago in reply to jiang chenglong

TI__Guru**** 196926 points

Hi Jiang,

I will run the code I gave you. It should work.

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CCS/TMS570LC4357: TMS570LC4357: bootloader application jump leads to prefetchEntry