Posted by tarek bouchkati on 2016-03-24 20:49

Sorry but I have misunderstood your question, thought you are talking about ITCM FLASH . It is not the case ?

Anyway, In my previous post I was talking about ITCM-FLASH.

If you want to load a specific function into a specific RAM region (in this case ITCM-RAM) you have to use the section feature:

example :

void routine_name __attribute__((section(".section_name"))) (void)
{
  // code
}

/*...................*/
/* Specify the memory areas */
MEMORY
{
ITCM_RAM (rx)      : ORIGIN = 0x00000000, LENGTH = 16K
FLASH (rx)             : ORIGIN = 0x00200000, LENGTH = 1024K
RAM (xrw)              : ORIGIN = 0x20000000, LENGTH = 320K
QSPI (xrw)              : ORIGIN = 0x90000000, LENGTH = 16M
}

/* Define output sections */
SECTIONS
{
/*........*/
 .section_name :
  {
    . = ALIGN(4);
    *(.section_name)         /* .section_name section */
    *(.section_name*)        /* .section_name* sub-sections if any */
    . = ALIGN(4);
  } >ITCM_RAM AT> FLASH
/*........*/
}

I hope that this can help you