OMAP138 stack memory section

ReinierC

Expert 2425 points

Hi,

We have the Zoom OMAP138 development kit from LogicPD, together with CCS 4.2.

I'm trying to setup the C6748 DSP to use the L2 RAM for the stack, but when configured this

way my program does not execute at all. I do not get any compiler or linker warnings, so I'm

not sure why it behaves in this manner. I have attached my declaration of the memory sections.

Fullscreen 5305.memory_sections.txt Download

-stack		0x00010000
-heap		0x00008000

MEMORY
{
   dsp_l2_ram:      ORIGIN = 0x00800000  LENGTH = 0x00040000
   shared_ram:      ORIGIN = 0x80000000  LENGTH = 0x00020000
   external_ram:    ORIGIN = 0xC0000000  LENGTH = 0x08000000
   arm_local_ram:   ORIGIN = 0xFFFF0000  LENGTH = 0x00002000
}

SECTIONS
{
   .text       > dsp_l2_ram
   .const      > dsp_l2_ram
   .bss        > dsp_l2_ram
   .far        > dsp_l2_ram
   .switch     > dsp_l2_ram
   .stack      > dsp_l2_ram
   .data       > dsp_l2_ram
   .cinit      > dsp_l2_ram
   .sysmem     > dsp_l2_ram
   .cio        > dsp_l2_ram
}

Could someone please assist?

Regards

Reinier

over 13 years ago

0 Asheesh Bhardwaj over 13 years ago

TI__Expert 4680 points

You can partition the L2RAM such that the stack and other sections are totally seperated.

Since you are putting all the sections on L2 RAM there could be potential issue that you are out of memory. Generate your map file and see if there is any issue with memory addresses and it can fit into the memory section dsp_l2_ram.

Regards

Asheesh

0 ReinierC over 13 years ago in reply to Asheesh Bhardwaj

Expert 2425 points

Hi Asheesh,

Thank you for coming back to me.

Is there perhaps a guide somewhere that explains this topic in more detail and provides recommended setups?

Regards

Reinier

0 Asheesh Bhardwaj over 13 years ago in reply to ReinierC

TI__Expert 4680 points

Please go through the SPRU187T user guide for compiler. Refer to sections 5 in detail.

http://www.ti.com/general/docs/lit/getliterature.tsp?literatureNumber=spru187t&fileType=pdf

Regards

Asheesh

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OMAP138 stack memory section