MPU configuration for FEE usage

Maybe it is irrelevant to MPU settings, because the Data Abort occurs in ti_fee_ini.c in the line

TI_Fee_u32BlockEraseCount = 0xFFFFFFFFU;

If I see it right, the global variable TI_Fee_u32BlockEraseCount is located at 0x00004688.

Isn't this in Flash?

And all variables from ti_fee_ini.c (TI_Fee_*) are located in this region.

Something is not right, but that doesn't explain the MPU dependency though.

Hi,

the wrong placement of the variable shows the right way.

The section specification was in the "wrong" #ifdef case of the sys_link.cmd for the SafeRTOS demo.

Thanks for your help.

Thomas

Hi Bojun,

Do you use default linker command file generated from HALCoGen? What is the address of TI_Fee_GlobalVariables [ ]?

Hi Vishwanath,

I did some slightly change on that command file but didn't change the TI_Fee parts which is previously in RAM.

I paste part of my .cmd file here.

/* Memory Map */

MEMORY
{
VECTORS (X) : origin=0x00020000 length=0x00000020
KERN_FUNC (RX) : origin=0x00020020 length=0x00007F80
FLASH0 (RX) : origin=0x00028000 length=0x00017FFF
STACKS (RW) : origin=0x08000000 length=0x00001500
KERN_DATA (RW) : origin=0x08001500 length=0x00000800
RAM (RW) : origin=0x08001D00 length=0x00006300
}

/*----------------------------------------------------------------------------*/
/* Section Configuration */

SECTIONS
{
.intvecs : palign(32), START( ulFlashStartAddr ),
fill =0xffffffff {} > VECTORS
KERNEL_FUNCTION : END( ulKernelFuncEndAddr ) > KERN_FUNC
MPU_WRAPPER_FUNCTIONS : palign(32),
fill =0xffffffff > FLASH0
.text : palign(32), fill =0xffffffff {} > FLASH0
.const : palign(32), END( ulFlashEndAddr ),
fill =0xffffffff {} > FLASH0
.cinit : palign(32), fill =0xffffffff {} > FLASH0
.pinit : palign(32), fill =0xffffffff {} > FLASH0
FEE_TEXT_SECTION : {} > FLASH0
FEE_CONST_SECTION : {} > FLASH0
STACK_DATA : START( ulKernelDataStartAddr ) {} > STACKS
KERNEL_DATA : END( ulKernelDataEndAddr ) > KERN_DATA
.bss : {} > RAM
.data : {} > RAM
.sysmem : {} > RAM
FEE_DATA_SECTION : {} > RAM

/* These configuration settings are for the SafeRTOS TMS570LS31x FPU
* demonstration project.
* They are included as a demonstration of how task data can be
* grouped together into known locations, therefore enabling MPU regions to be
* defined. */

lnkIDLE_TASK_DATA_SECTION
: START( ulIdleTaskDataStartAddr )
{} > RAM palign( 0x20 )
}

Thanks for your help.

Best,

Bojun

Hi Bojun,

Command file configuration for FEE looks good. Can you let us know what is the address of TI_Fee_GlobalVariables [ ]?

Hi Vishwanath,

From the .map file, I saw the TI_Fee_GlobalVariables located at address 0x080059a0.

Thanks.

Best,

Bojun

Hi Bojun,

Address looks correct. When you get data abort, what is the address you see in LR? 

Hi Vishwanath,

I move the FEE_INIT outside the safeRTOS task and the problem has been solved.

Thanks for your help.

Best Regards,

Bojun Pan