MEMORY
{
  RAM (xrw)     : ORIGIN = 0x20000000,       LENGTH =  64K
  BL_FLASH (rx) : ORIGIN = 0x08000000,       LENGTH =  20K
  FLASH (rx)    : ORIGIN = 0x08000000 + 20K, LENGTH = 512K - 20K
  FLASHB1 (rx)  : ORIGIN = 0x00000000,       LENGTH = 0
  EXTMEMB0 (rx) : ORIGIN = 0x00000000,       LENGTH = 0
  EXTMEMB1 (rx) : ORIGIN = 0x00000000,       LENGTH = 0
  EXTMEMB2 (rx) : ORIGIN = 0x00000000,       LENGTH = 0
  EXTMEMB3 (rx) : ORIGIN = 0x00000000,       LENGTH = 0
}