flash_main.c

代码功能：实现将所要下载的文件写入flash指定的block中

//====================================================================
// File Name : flash_main.c
// Function  : S3C2440 Test Main Menu
// Program   : Terminator
// Date      : July 1, 2008
// Version   : 0.0
// History
//   0.0 : Programming start (July 1,2008) -> 
//====================================================================

#include <stdlib.h>
#include <string.h>

#include "def.h"
#include "option.h"
#include "2440addr.h"
#include "2440lib.h"
#include "mmu.h"
#include "Nand.h"
#include "DownLoader.h"

#if USE_MAIN
#include <stdio.h>
#endif


void Isr_Init(void);
void HaltUndef(void);
void HaltSwi(void);
void HaltPabort(void);
void HaltDabort(void);

extern void Calc_Clock(int print_msg);
extern U32 Mdiv, Pdiv, Sdiv, Fclk, Hclk, Pclk, Hdivn, Pdivn, Hclk_Ratio, Pclk_Ratio, Ref_Cnt;
void xmain(void)
{
	int i;
	// GPIO port init.
	Port_Init();
	
	Led_Display(0xf);
	
	// MMU init. I/D cache on.
	MMU_Init();
	
	Led_Display(0x1);
	
	Calc_Clock(0);
	
	Isr_Init();
	Uart_Init(Pclk, 115200);
	Uart_Select(1);
	Uart_TxEmpty(1);
	
	// timer setting for delay 100us unit.
	//Check whether or not the POWER_OFF wake-up.
	//Delay(0);	//calibrate Delay()
	
	// Set I/O strength control.
	//rDSC0 = (0<<31)|(0x3<<8)|(0xff<<0);
	rDSC0 = (0<<31)|(0x0<<8)|(0x00<<0);
	// nEN_DSC	[31]	: 0:I/O drive strength enable, 1:Disable
	// DSC_ADR	[9:8]	: Addr drive strength, 0:10mA, 1:8mA, 2:6mA, 3:4mA
	// DSC_DATA	[7:0]	: DATA drive strength, 0:12mA, 1:10mA, 2:8mA, 3:6mA
	//rDSC1 = (0x3<<28)|(0x3<<26)|(0xfffff<<0);
	rDSC1 = (0x0<<28)|(0x0<<26)|(0x00000<<0);	
	// DSC_SCK1	[29:28]	: SCLK1, 0:16mA, 1:12mA, 2:8mA, 3:6mA 
	// DSC_SCK0	[27:26]	: SCLK0, 0:16mA, 1:12mA, 2:8mA, 3:6mA 
	// DSC_SCKE	[25:24]	: SCLKE, 0:10mA, 1:8mA, 2:6mA, 3:4mA 
	// DSC_SDR	[23:22]	: nRAS/nCAS, 0:10mA, 1:8mA, 2:6mA, 3:4mA 
	// DSC_NFC	[21:20]	: Nand flash(nFCE,nFRE,nFWE,CLE,ALE), 0:10mA, 1:8mA, 2:6mA, 3:4mA 
	// DSC_BE	[19:18]	: nBE[3:0], 0:10mA, 1:8mA, 2:6mA, 3:4mA 
	// DSC_WOE	[17:16]	: nBE[3:0], 0:10mA, 1:8mA, 2:6mA, 3:4mA 
	// DSC_CS7	[15:14]	: nGCS7, 0:10mA, 1:8mA, 2:6mA, 3:4mA 
	// DSC_CS6	[13:12]	: nGCS6, 0:10mA, 1:8mA, 2:6mA, 3:4mA 
	// DSC_CS5	[11:10]	: nGCS5, 0:10mA, 1:8mA, 2:6mA, 3:4mA 
	// DSC_CS4	[9:8]	: nGCS4, 0:10mA, 1:8mA, 2:6mA, 3:4mA 
	// DSC_CS3	[7:6]	: nGCS3, 0:10mA, 1:8mA, 2:6mA, 3:4mA 
	// DSC_CS2	[5:4]	: nGCS2, 0:10mA, 1:8mA, 2:6mA, 3:4mA 
	// DSC_CS1	[3:2]	: nGCS1, 0:10mA, 1:8mA, 2:6mA, 3:4mA 
	// DSC_CS0	[1:0]	: nGCS0, 0:10mA, 1:8mA, 2:6mA, 3:4mA
	
	
	while(1)
	{
		Uart_Printf("DownLoader File(-1 to exit):");
		
		i = Uart_GetIntNum();
		
		if(i==-1) break;
		
		DownLoader();
	}
	
	Test_NAND();
	
}

//===================================================================
void Isr_Init(void)
{
    pISR_UNDEF  = (unsigned)HaltUndef;
    pISR_SWI    = (unsigned)HaltSwi;
    pISR_PABORT = (unsigned)HaltPabort;
    pISR_DABORT = (unsigned)HaltDabort;
	
    rINTMOD     = 0x0;					 //All=IRQ mode
//    rINTCON=0x5;						   //Non-vectored,IRQ enable,FIQ disable    
    rINTMSK     = BIT_ALLMSK;			  //All interrupt is masked.
    rINTSUBMSK  = BIT_SUB_ALLMSK;		  //All sub-interrupt is masked. <- April 01, 2002 SOP

//    rINTSUBMSK  = ~(BIT_SUB_RXD0);		 //Enable Rx0 Default value=0x7ff
//    rINTMSK     = ~(BIT_UART0);			//Enable UART0 Default value=0xffffffff    
	
//    pISR_UART0=(unsigned)RxInt;			//pISR_FIQ,pISR_IRQ must be initialized
}
//===================================================================
void HaltUndef(void)
{
    Uart_Printf("Undefined instruction exception.\n");
    while(1);
}

//===================================================================
void HaltSwi(void)
{
#if !SEMIHOSTING	
		Uart_Printf("SWI exception!!!\n");
		while(1);
#endif	
}

//===================================================================
void HaltPabort(void)
{
    Uart_Printf("Pabort exception.\n");
    while(1);
}

//===================================================================
void HaltDabort(void)
{
    Uart_Printf("Dabort exception.\n");
    while(1);
}