main.c

基于dragon_MX1_ads的装载启动代码armboot

#include "../../Include/type.h"

#define UART1_BASE      0x00206000
#define UART2_BASE      0x00207000

#define _reg_URXD       (*((volatile U32 *)(gUartBase+0x00)))
#define _reg_UTXD       (*((volatile U32 *)(gUartBase+0x40)))
#define _reg_USR2       (*((volatile U32 *)(gUartBase+0x98)))

#define ADET_MASK   0x8000  // auto-baud detection 
#define TXFE_MASK   0x4000  // Tx buffer empty
#define RDR_MASK    0x0001  // receive data ready

U32 gUartBase;
const U8 gMsgGreet[] = "\n\rMX1ADS Sync-flash Programming Utility v0.5 2002/08/21\n\r";
const U8 gMsgSource[] = "Source address (stored in 0x0AFE0000): 0x";
const U8 gMsgTarget[] = "Target address (stored in 0x0AFE0004): 0x";
const U8 gMsgSize[]   = "Size           (stored in 0x0AFE0008): 0x";
const U8 gMsgStart[] = "Press any key to start programming ...";
const U8 gMsgErasing[] = "\n\rErasing flash ...";
const U8 gMsgProgramming[] = "\n\rProgramming ...";
const U8 gMsgFinish[] = "\n\rProgramming finished.\n\rPress 'a' to continue ....";

U8 DataReady()
{
    return (_reg_USR2 & RDR_MASK);    // check RDR bit
}

void PutChar(U8 data)
{
    while (!(_reg_USR2 & TXFE_MASK));    // wait until TXFE bit set
    _reg_UTXD = (U16)data;
}

U8 GetChar()
{
    while (!DataReady());   // wait until RDR bit set
    return (U8)_reg_URXD;
}

void PutHex(U8 data)
{
    U8  d;

    // print first digit
    d = data >> 4;
    if (d > 9)
        d += 55;
    else
        d += '0';
    PutChar(d);

    // print second digit
    d = data & 0xF;
    if (d > 9)
        d += 55;
    else
        d += '0';
    PutChar(d);
}

U8 Verify(U32 source, U32 destin, U32 count)
{
	U32 *pSource, *pDestin, i;

	EUARTputString((U8 *)"\n\rVerifying flash ...");
	pSource = (U32 *)source;
	pDestin = (U32 *)destin;
	for (i=0; i<count; i+=4)
	{
		if (*(pSource++)!=*(pDestin++))
			return 0;	// not equal
	}
	return 1;	// all verified okay
}

U8 CheckBlank(U32 destin, U32 count)
{
	U32 *pDestin, i;

EUARTputString((U8 *)"\n\rBlank checking ...");
	
	pDestin = (U32 *)destin;
	for (i=0; i<count; i+=4)
	{
		if (*(pDestin++) != 0xFFFFFFFF)
			return 0;	// not blank
	}
	return 1;	// all blankcd
}

int main(void)
{
    U32 SourceAddress;
    U32 TargetAddress;
    U32 ByteSize;

    U8 tmp;

    U32 i;
    U32 j=1;
    long    size;
    U32 blockStart;
    char c;
    U16	status;

    // see if UART1 is the current port to use
    gUartBase = UART1_BASE;
    if (!(_reg_USR2 & 0x8000))      // ADET bit not set ?
    {
        gUartBase = UART2_BASE;
    }

    EUARTputString((U8 *)&gMsgGreet);

    SourceAddress = *((U32 *)0x0AFE0000);
    EUARTputString((U8 *)&gMsgSource);
    PutHex((U8)(SourceAddress >> 24));
    PutHex((U8)(SourceAddress >> 16));
    PutHex((U8)(SourceAddress >> 8));
    PutHex((U8)SourceAddress);
    PutChar('\n');
    PutChar('\r');

    TargetAddress = *((U32 *)0x0AFE0004);
    EUARTputString((U8 *)&gMsgTarget);
    PutHex((U8)(TargetAddress >> 24));
    PutHex((U8)(TargetAddress >> 16));
    PutHex((U8)(TargetAddress >> 8));
    PutHex((U8)TargetAddress);
    PutChar('\n');
    PutChar('\r');

    ByteSize = *((U32 *)0x0AFE0008);
    EUARTputString((U8 *)&gMsgSize);
    PutHex((U8)(ByteSize >> 24));
    PutHex((U8)(ByteSize >> 16));
    PutHex((U8)(ByteSize >> 8));
    PutHex((U8)ByteSize);
    PutChar('\n');
    PutChar('\r');

    // clear input buffer
    while (DataReady())
        c = GetChar();

    EUARTputString((U8 *)&gMsgStart);
    c = GetChar();

    SyncFlashInit();
//    SyncFlashNvmodeErase();
//    SyncFlashNvmodeWrite();
    SyncFlashNormal();
       

	do
	{
    	EUARTputString((U8 *)"\nErasing ...");
	   size = ByteSize;
   	blockStart = TargetAddress;
	   do
   	{
     	  	SyncFlashErase(blockStart);
	  		size -= 0x100000;
   	 	blockStart += 0x100000;
    	} while  (size > 0);
    	SyncFlashNormal();
	} while (!CheckBlank(TargetAddress, ByteSize));

	EUARTputString((U8 *)"\nProgramming ...");
   SyncFlashWrite(SourceAddress, TargetAddress, ByteSize);
	if (Verify(SourceAddress, TargetAddress, ByteSize))
	{
		EUARTputString((U8 *)" succeed.\n");
	}
	else
	{
		EUARTputString((U8 *)" failed !\n");
	}
 	SyncFlashNormal();

	
/*
    if(Compare(SourceAddress, TargetAddress, ByteSize))
      Error();

    while (1);  // success
*/
    EUARTputString((U8 *)&gMsgFinish);

    JumpToAddr(0);    // go back to boot-strap

    return 0;   // dummy
}