getting minimal repo with just:

```
MEMORY
{
    RAM : ORIGIN = 0x20000020, LENGTH = 128K - 32
    FLASH : ORIGIN = 0x8020000, LENGTH = 1M - 128K
    ITCM : ORIGIN = 0x00000000, LENGTH = 64K
}

SECTIONS
{
  .itcm (NOLOAD) : {
    . = ALIGN(4);
    __sitcm = .;
    *(.itcm .itcm.*);
    . = ALIGN(4); /* 4-byte align the end (VMA) of this section */
    __eitcm = .;
  } > ITCM AT>FLASH

  __siitcm = LOADADDR(.itcm);
}

```

and  

```
fn main() {