MEMORY
{
  BOOT_LOADER : ORIGIN = 0x10000000, LENGTH = 0x100
  FLASH : ORIGIN = 0x10000100, LENGTH = 2048K - 0x100
  RAM : ORIGIN = 0x20000000, LENGTH = 264K
}

SECTIONS {

  .boot_loader ORIGIN(BOOT_LOADER) :
  {
    KEEP(*(.boot_loader*));
  } > BOOT_LOADER

} INSERT BEFORE .text;