flashat91rm9200_ek.mac

AT91RM9200EK和DK测试代码

setup()
{
  __var i,clk;

  // ******************************************************
  // Set clock
  // ******************************************************

  __writeMemory32(0x1, 0xFFFFFC00, "Memory");             // PMC_SCER: PCK = 1

  __writeMemory32(0x0000FF01, 0xFFFFFC20, "Memory");      // PMC_MOR: MOSCEN = 1, enable main clock

  while(((clk = __readMemory32(0xFFFFFC24, "Memory")) & 0x00010000) == 0);  // Read PMC_MCFR to determine Fosc

  clk = (clk & 0x0000FFFF) * 32768 / 16;    // * 244 / 5;

  __writeMemory32(0x1, 0xFFFFFC30, "Memory");             // PMC_MCKR: CSS = 1, PRES = 0, MDIV = 0

  // ******************************************************
  // Test and set Remap
  // ******************************************************

  __writeMemory32(0xAAAAAAAA,0x00000000,"Memory");
  if(__readMemory32(0x00000000,"Memory") != 0xAAAAAAAA)
  {
    __writeMemory32(0x01,0xFFFFFF00,"Memory");    // MC_RCR: toggle remap bit
  }

  // ******************************************************
  // Setup the external AT48BV6416T x16 bit (ie. 8MB) FLASH - 70ns
  // ******************************************************
  i = __readMemory32(0xFFFFFF60, "Memory");
  __writeMemory32(i & ~0x1, 0xFFFFFF60, "Memory");         // EBI_CSA: CS0A = 0, Chip Select 0 is assigned to the Static Memory Controller.
  
  __writeMemory32(0x0000308D, 0xFFFFFF70, "Memory");       // FLASH NWS - 13, WSEN - 1, BAT - 1, DBW - 1(x16bit)

}

execUserPreload()
{
  setup();
  __message("Target init macro complete");
}