rt-thread/bsp/sep4020/Ext_SDRAM.ini

/******************************************************************************/
/* Ext_RAM.INI: External RAM (SDRAM) Initialization File                      */
/******************************************************************************/
// <<< Use Configuration Wizard in Context Menu >>>                           // 
/******************************************************************************/
/* This file is part of the uVision/ARM development tools.                    */
/* Copyright (c) 2005-2008 Keil Software. All rights reserved.                */
/* This software may only be used under the terms of a valid, current,        */
/* end user licence from KEIL for a compatible version of KEIL software       */
/* development tools. Nothing else gives you the right to use this software.  */
/******************************************************************************/


FUNC void SetupForStart (void) {

// <o> Program Entry Point
  PC = 0x30000000;
}


FUNC void Init (void) {

  _WDWORD(0x1000200C, 0x00000000);      // Disable Watchdog

                                        // Clock Setup 
                                        
  _WDWORD(0x10001000, 0x00fa00fa);      // 
  _WDWORD(0x10001014, 0x00000001);      // 
  _WDWORD(0x10001004, 0x00004009);      // 
  _WDWORD(0x10001004, 0x0000C009);       // 
  _WDWORD(0x11000018, 0x1E104177);      // 
  _WDWORD(0x1100001c, 0x80001860);      // 


}

Init();                                 // Initialize memory
LOAD build\rtthread-sep4020.axf INCREMENTAL         // Download program
SetupForStart();                        // Setup for Running
g, main                                 // Goto Main