main_boot.c

把flash的代码搬移到Dram的0xc

#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>

#include "..\inc\44b.h"
#include "..\inc\def.h"
#include "..\inc\option.h"



/************************* PLL ********************************/
static void ChangePllValue(int mdiv,int pdiv,int sdiv)
{
    rPLLCON=(mdiv<<12)|(pdiv<<4)|sdiv;
}

static void globle_int_enable(unsigned char bEnabled)
{
	if(bEnabled)
		rINTMSK &= ~BIT_GLOBAL;
	else
		rINTMSK |= BIT_GLOBAL;
}

static void sys_init(void)
{
	rSYSCFG=SYSCFG_8KB;
    ChangePllValue(PLL_M,PLL_P,PLL_S);
    globle_int_enable(0);
}
extern void copyversion2Bkram(void);

int main(void)
{
      PF_XMODEM_APP pf_xmodem_app;
      unsigned char *src, *dst;
      int i,len;
      
      sys_init();
         
	  // copy app from flash to DRAM
	  // run in DRAM
	  src = (unsigned char *)XMODEM_BOOT1_ADDR;
	  dst = (unsigned char *)XMODEM_BOOT2_ADDR;
	  len = (0x10000 - 0x1000);
			
	  for(i=0; i<len; i++)
		*dst++ = *src++;
			
	  pf_xmodem_app = (PF_XMODEM_APP)(XMODEM_BOOT2_ADDR);
	  pf_xmodem_app();
			
      return 0;
}