BASE_ADDR = 0x4000;

MEMORY
{
  m_interrupts        (RX) : ORIGIN = BASE_ADDR, LENGTH = 0x0200
  m_bootloader_config (RX) : ORIGIN = BASE_ADDR + 0x3C0, LENGTH = 0x0040
  m_text              (RX) : ORIGIN = BASE_ADDR + 0x400, LENGTH = 0x10000 - (BASE_ADDR + 0x400)
  m_data              (RW) : ORIGIN = 0x1FFFF000, LENGTH = 0x4000
}

Invoking: Cross ARM C++ Linker
../MKL27Z64xxx4_flash.ld:67: nonconstant expression for origin
collect2: error: ld returned 1 exit status

m_interrupts        (RX) : ORIGIN = BASE_ADDR, LENGTH = 0x0200