Moving default system heap memory dynamically to a different region

Hi Lijo --

Which version of SYS/BIOS are you using?  And which device?

You can use HeapMem_construct() for this.   You need to create a small heap in local L2 memory.  64 bytes is big enough.  For ELF targets, this local heap is used during boot time to allocate a small structure for atexit().  Then you can use HeapMem_construct() to reconstruct this heap with different parameters.

I've attached some sample code that should help. 

4645.memconstruct.zip

Note that you need something like this in your .cfg file:

/*
 * The BIOS module will create the default heap for the system.
 * Specify the size of this default heap.
 */
// BIOS.heapSize = 0x1000;

var HeapMem = xdc.useModule('ti.sysbios.heaps.HeapMem');
var myHeapParams = new HeapMem.Params;
myHeapParams.sectionName = ".bootHeap";
myHeapParams.size = 64;
Program.global.myHeap = HeapMem.create(myHeapParams);

Memory.defaultHeapInstance = Program.global.myHeap;

Program.sectMap[".bootHeap"] = new Program.SectionSpec();
Program.sectMap[".bootHeap"].loadSegment = "L2SRAM";

and something like this in main():

Void main()
{
    Task_Handle task;
    Error_Block eb;
    HeapMem_Params heapParams;
    HeapMem_Params_init(&heapParams);
    heapParams.buf = memoryBlock;
    heapParams.size = MEMORYBLOCKSIZE;
    HeapMem_construct((HeapMem_Struct *)myHeap, &heapParams);

Regards,
-Karl-