ram: stm32: add memory mapping selection support

This allows to controls the memory internal mapping at
address 0x0000 0000.
We can either map at 0x0000 0000 :
  _ main flash memory
  _ system flash memory
  _ FMC bank1 (NOR/PSRAM 1 and 2)
  _ embedded SRAM
  _ FMC/SDRAM bank1

This is needed for future STM32F469-disco board

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
1 file changed