api_segment_init.c

来自「IAPBootLoader源程序是单片机ARM的例题」· C语言 代码 · 共 44 行

#include <string.h>
#include "segment_init.h"

#pragma language=extended
#pragma segment="INITTAB"



__root void init_ram_code()
{
  InitBlock_Type const * const initTableBegin = __sfb( "INITTAB" );
  InitBlock_Type const * const initTableEnd = __sfe( "INITTAB" );
  InitBlock_Type const * initTableP;

  for (initTableP=initTableBegin; (int)initTableP<(int)initTableEnd; initTableP++)
  {
    if (initTableP->Src == initTableP->Dst)
    {
      memset(initTableP->Dst, 0, initTableP->Size);
    }
    else
    {
      memcpy(initTableP->Dst, initTableP->Src, initTableP->Size);
    }
  }
asm("nop\n");
asm("nop\n");
asm("nop\n");
asm("nop\n");
asm("nop\n");

  memcpy((char *)0x20000000,(char *)0x40003000,0x428);

  memcpy((char *)0x20000428,(char *)0x40003428,0x1b8);   // for close remap
  //memcpy((char *)0x20000428,(char *)0x40003428,0x1d4);  // for open remap
  memcpy((char *)0x200005E0,(char *)0x400038DC,0x144);  // close
  //memcpy((char *)0x200005E0,(char *)0x400038f8,0x144);  // open

asm("b 0x40003000");

}

#pragma language=default