comload.c

2440 开发板的测试程序。包括uart,iic,lcd

#include "def.h"
#include "2440addr.h"
#include "2440lib.h"

#define	puts	Uart_Printf
#define	printf	Uart_Printf
#define	getch	Uart_Getch

#ifndef DEBUG_VERSION
#define	USE_UART_INT
#endif

extern U32 downloadAddress, downloadFileSize;
static U8* temp;

#ifdef	USE_UART_INT
static void __irq Uart0RxInt( void )
{
	ClearSubPending( BIT_SUB_RXD0 ); //rSUBSRCPND = BIT_SUB_RXD0;   	   //Clear pending bit (Requested)
	ClearPending( BIT_UART0 );

	*temp ++ = RdURXH0();
}
#endif

void call_linux( U32 a0 , U32 a1 , U32 a2 );

void comdownload( void )
{
	U32 size;
	U8* buf;
	U16 checksum;

	puts( "\nNow download file from uart0...\n" );
	downloadAddress = _NONCACHE_STARTADDRESS;
	buf = ( U8 * ) downloadAddress;
	temp = buf - 4;

	Uart_GetKey();

#ifdef	USE_UART_INT
	pISR_UART0 = ( U32 ) Uart0RxInt;		//串口接收数据中断
	ClearSubPending( BIT_SUB_RXD0 );
	ClearPending( BIT_UART0 );
	EnableSubIrq( BIT_SUB_RXD0 );
	EnableIrq( BIT_UART0 );
#endif

	while ( ( U32 ) temp < ( U32 ) buf )
	{
#ifdef	USE_UART_INT
		Led_Display( 0 );
		Delay( 1000 );
		Led_Display( 15 );
		Delay( 1000 );
#else
		*temp++ = Uart_Getch();
#endif
	}							//接收文件长度,4 bytes	

	size = *( U32 * ) ( buf - 4 );
	downloadFileSize = size - 6;

#ifdef	USE_UART_INT
	printf( "Download File Size = %d\n" , size );
#endif

	while ( ( ( U32 ) temp - ( U32 ) buf ) < ( size - 4 ) )
	{
#ifdef	USE_UART_INT	
		Led_Display( 0 );
		Delay( 1000 );
		Led_Display( 15 );
		Delay( 1000 );
#else
		*temp++ = Uart_Getch();
#endif		
	}

#ifdef	USE_UART_INT
	DisableSubIrq( BIT_SUB_RXD0 );
	DisableIrq( BIT_UART0 );
#endif

#ifndef	USE_UART_INT
	printf( "Download File Size = %d\n" , size );
#endif

	checksum = 0;
	for ( size = 0; size < downloadFileSize; size++ )
		checksum += buf[size];
	if ( checksum != ( buf[size] | ( buf[size + 1] << 8 ) ) )
	{
		puts( "Checksum fail!\n" );
		return;
	}

	puts( "Are you sure to run? [y/n]\n" );
	while ( 1 )
	{
		U8 key = getch();
		if ( key == 'n' )
			return;
		if ( key == 'y' )
			break;
	}

	call_linux( 0 , 193 , downloadAddress );
}