main.c.bak

这个是嵌入式arm系列的一个bootloader程序。对需要编写bootloader的很有参考价值

//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
//
// Use of this source code is subject to the terms of the Microsoft end-user
// license agreement (EULA) under which you licensed this SOFTWARE PRODUCT.
// If you did not accept the terms of the EULA, you are not authorized to use
// this source code. For a copy of the EULA, please see the LICENSE.RTF on your
// install media.
//
/*++
THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
PARTICULAR PURPOSE.
Portions Copyright (c) 2001 Intel Corporation

Module Name:  
    main.c
    
Abstract:  
    Ethernet boot loader main module. This file contains the C main
    for the boot loader.

	The Windows CE boot loader is the code that is executed on a Windows CE
	development system at power-on reset and loads the Windows CE
	operating system. 
    
Functions:




--*/

#include <windows.h>
#include <ethdbg.h> 
#include "halether.h" 
#include <nkintr.h> 
#include <pehdr.h>
#include <romldr.h>
#include "ethdown.h"
#if defined ( RTECH_FLAG )
#include "monitor.h"
#endif

#define BIN_FILE_TYPE	1
#define NB0_FILE_TYPE	2
#define BOOTLOADER		4
#define NKBIN			8
#define FLASHTARGET		16

#define _Vertification_ 0

#define BOOT_LOADER  // To avoid including debug ethernet support
#include "..\..\kernel\hal\debug.c"



extern BOOL SDdetect();
extern int  sddownload;


extern void Launch(unsigned int uAddr);
extern void Launch2(unsigned int uAddr);
extern msWait(unsigned msVal);

extern DWORD dwPhysStart;	// image physical starting address
extern DWORD dwPhysLen;	// image physical length
#if defined ( RTECH_FLAG)
#define EBOOT_IMAGE_START 0x80078000
#define FLASH_START		BOOT_FLASH_BASE_U_VIRTUAL   
DWORD	dwFlashCache;
extern DWORD dwEBOOT_OFFSET;
#endif
extern DWORD fileType;
extern DWORD v_PacketNum;

//
// Function pointers to the support library functions of the currently installed debug ethernet controller.
//
extern PFN_EDBG_INIT             pfnEDbgInit;
extern PFN_EDBG_ENABLE_INTS      pfnEDbgEnableInts;
extern PFN_EDBG_DISABLE_INTS     pfnEDbgDisableInts;
extern PFN_EDBG_GET_PENDING_INTS pfnEDbgGetPendingInts;
extern PFN_EDBG_GET_FRAME        pfnEDbgGetFrame;
extern PFN_EDBG_SEND_FRAME       pfnEDbgSendFrame;
extern PFN_EDBG_READ_EEPROM      pfnEDbgReadEEPROM;
extern PFN_EDBG_WRITE_EEPROM     pfnEDbgWriteEEPROM;
extern PFN_EDBG_SET_OPTIONS      pfnEDbgSetOptions;

#define pDriverGlobals ((PDRIVER_GLOBALS) DRIVER_GLOBALS_PHYSICAL_MEMORY_START)

// Constants that control operation of bootloader. All times in seconds
#define BOOTME_INTERVAL	   3    // Interval between BOOTMEs
#define MAX_BOOTME_CNT	   25
// Well known DHCP ports for use with UDP
#define DHCP_SERVER_PORT 0x4300
#define DHCP_CLIENT_PORT 0x4400

// Name of platform and base for device name in Eshell
#define PLATFORM_STRING  "XSC1BD"

// CPU Id for Eshell
//#define EDBG_CPUID EDBG_CPU_XSC1
#define EDBG_CPUID EDBG_CPU_TYPE_ARM

#define EBOOT_VERSION_MAJOR  1
#define EBOOT_VERSION_MINOR  0
const unsigned char EBOOT_VERSION_EXT[] = {" v2.00-hjg"};

const unsigned char NKSignon[] = {
    "\nMicrosoft Windows CE Ethernet Bootloader built "
        __DATE__ " " __TIME__ "\n"
	"Copyright (c) 2001 Microsoft Corporation\n"
	"Portions copyright (c) 2001 Intel Corporation\n"};

ROMHDR RomHdr;							// ROM Table of Contents 

static BYTE FrameBuffer[ETHER_MTU];

extern DWORD dwLaunchAddr;
extern DWORD VerifyCheckSum(void);

DWORD EdbgDebugZone;

extern DWORD dwOffset;

ROMHDR * volatile const pTOC = (ROMHDR *)-1;     // Gets replaced by RomLoader with real address

void KernelRelocate(ROMHDR *const pTOC);

extern UINT EdeviceInit(EDBG_ADDR *MyAddr);
extern int InitSpecifiedEthDevice(EDBG_ADDR *MyAddr, UINT EthDevice);

typedef volatile unsigned int *VPDWORD;
unsigned int ulRamBufStart;				// starting address of available RAM
unsigned int ulRamBufEnd;				// ending address of available RAM

extern void InitClock(void);

//
// Move all writeable data sections into RAM
//
// Relocate the kernel

void KernelRelocate(ROMHDR *const pTOC)
{
	ULONG loop;
	COPYentry *cptr;
//
    //volatile BLR_REGS *BLR = (BLR_REGS *)FPGA_REGS_BASE_U_VIRTUAL;
#if _Vertification_
	//BLR->hex_led = 0x90908080;
	while ((OEMReadDebugByte() == OEM_DEBUG_READ_NODATA));
#endif
	if (pTOC == (ROMHDR *const) 0xffffffff) {
		while (1) ; // spin forever!
	}
	
#if _Vertification_	
	//BLR->hex_led = 0x80808080;
	while ((OEMReadDebugByte() == OEM_DEBUG_READ_NODATA));
	//BLR->hex_led = pTOC->ulCopyEntries;
	while ((OEMReadDebugByte() == OEM_DEBUG_READ_NODATA));
	//BLR->hex_led = pTOC->ulCopyOffset; 
	while ((OEMReadDebugByte() == OEM_DEBUG_READ_NODATA));
#endif

	// This is where the data sections become valid... don't read globals until after this
	for (loop = 0; loop < pTOC->ulCopyEntries; loop++) {
		cptr = (COPYentry *)(pTOC->ulCopyOffset + loop*sizeof(COPYentry));
		//
#if _Vertification_
		//BLR->hex_led = cptr->ulDest;
		while ((OEMReadDebugByte() == OEM_DEBUG_READ_NODATA));
		//BLR->hex_led = cptr->ulSource;
		while ((OEMReadDebugByte() == OEM_DEBUG_READ_NODATA));
		//BLR->hex_led = cptr->ulCopyLen;
		while ((OEMReadDebugByte() == OEM_DEBUG_READ_NODATA));
#endif		
		//
		if (cptr->ulCopyLen)
			memcpy((LPVOID)cptr->ulDest,(LPVOID)cptr->ulSource,cptr->ulCopyLen);
		if (cptr->ulCopyLen != cptr->ulDestLen)
			memset((LPVOID)(cptr->ulDest+cptr->ulCopyLen),0,cptr->ulDestLen-cptr->ulCopyLen);
	}

}


#define IPSTATE_NONE    0
#define IPSTATE_GOTIP   1
#define IPSTATE_ARP     2
#define IPSTATE_ARPED   3
#define IPSTATE_RETRY   4

#define MAX_DHCP_RETRY  3

#define NONE -1
#if defined ( ORGEBOOT_FLAG )
#define RAM_IMAGE_START 0x8008D000
#else
#define RAM_IMAGE_START 0x800C0000
#endif

#define FLASH_CFG_START (BOOT_FLASH_BASE_U_VIRTUAL+0x00040000)

#define EbootCFGMagicNumber 0x11232000

#define DEVICE_PCMCIA 0
#define DEVICE_CF	  1
#define DEVICE_SMSC   2

typedef struct
{
	DWORD autoDownloadImage;
	DWORD IP;
	DWORD subnetMask;
	DWORD numBootMe;
	DWORD delay;
	DWORD DHCPEnable;
	DWORD bootDeviceOrder;
	DWORD dwLaunchAddr;
	DWORD ConfigMagicNumber;
} EBOOTCFG;

int StoreEBootCFG(EBOOTCFG *EBootCFG);
int LoadEBootCFG(EBOOTCFG *EBootCFG);
void ResetFactoryDefaultCFG(EBOOTCFG *EBootCFG);
void SetIP(EBOOTCFG *pEbootCFG);
void SetMask(EBOOTCFG *pEbootCFG);
void SetBootMe(EBOOTCFG *pEbootCFG);
void SetDelay(EBOOTCFG *pEbootCFG);

#if defined ( PLAT_LUBBOCK )
void SetSMSCMACAddress();
void CvtMAC(USHORT MacAddr[3], char *pszDottedD );
extern void SMCSetMACAddress(USHORT MacAddr[3]);
extern void SMCGetMACAddress(USHORT MacAddr[3]);
#endif
extern void LCD_Initialize (void);		// add hjg
BOOL CFGChanged=FALSE;
extern void ClearPromiscuousIP( void );
BOOL bLinkEstablished = FALSE;
#if defined ( RTECH_FLAG ) 
BOOL bEbootExternalDown = FALSE;
DWORD fWriteToFlash;
#endif




void main(void)
{
	EDBG_ADDR MyAddr;
	DWORD dwSubnetMask;
	DWORD dwStartTime;
	DWORD dwCurrTime;
	DWORD dwPrevTime;
	DWORD selection;
	DWORD delay;
	BOOL  fGotJumpimg = FALSE, fGotIP = FALSE;
    DWORD dwIPState = IPSTATE_NONE;
    EDBG_ADDR EshellHostAddr = {0,0,0};
    EDBG_OS_CONFIG_DATA *pCfgData;    
	DWORD dwNextBootme=0; // Time of next bootme
	UCHAR BootmeCnt=0;	  // # of bootmes sent so far
    int DHCPRetry=0;
    DWORD DHCPLeaseTime;
    DWORD EdbgFlags = 0;
	UINT ethernet_device;
	LPDWORD	lpdwToc;	  // toc pointer
	int i,j;
	
	volatile GPIO_REGS   *v_pGPIOReg;
	volatile PWM_REGS	 *v_pPWM0Reg = NULL;//houjg add
	volatile PWM_REGS	 *v_pPWM1Reg = NULL;//houjg add
	volatile CLKMAN_REGS *v_pCLKReg = NULL;//houjg add
	volatile SA2lcdregs	 *v_pLcdRegs = NULL;// houjg add
	
#if defined ( RTECH_FLAG ) 	
	DWORD dwFlashStart;
	UINT16 MonitorFlag = 0;
#endif
    SYSTEMTIME st;
	SYSTEMTIME defst = {1998,1,0,1,12,0,0,0};
	
	EBOOTCFG EbootCFG;
	EBOOTCFG *pEbootCFG;

	// This table describes the boot order for a given configuration
	int bootOrder[] = {DEVICE_SMSC,DEVICE_PCMCIA,DEVICE_CF, //pEbootCFG->bootDeviceOrder = 0
					  DEVICE_SMSC,DEVICE_CF,DEVICE_PCMCIA,  //pEbootCFG->bootDeviceOrder = 1
					  DEVICE_PCMCIA,DEVICE_CF,DEVICE_SMSC,  //pEbootCFG->bootDeviceOrder = 2
					  DEVICE_PCMCIA,DEVICE_SMSC,DEVICE_CF,  //pEbootCFG->bootDeviceOrder = 3
					  DEVICE_CF,DEVICE_SMSC,DEVICE_PCMCIA,  //pEbootCFG->bootDeviceOrder = 4
					  DEVICE_CF,DEVICE_PCMCIA,DEVICE_SMSC}; //pEbootCFG->bootDeviceOrder = 5

#if defined ( PLAT_LUBBOCK )
	//int x,y,z;
   // volatile BLR_REGS *BLR = (BLR_REGS *)FPGA_REGS_BASE_U_VIRTUAL; //add by houjg ,wait for fpga registers
#endif

    /* Copy kernel data to RAM & zero out BSS */
	KernelRelocate(pTOC);

	OEMInitDebugSerial(); //why no for xsacle 's init program
	
		
	{
		volatile PMEMC pMemCtrlRegs = (volatile PMEMC)MEMC_BASE_U_VIRTUAL;
		EdbgOutputDebugString("MSC0=0x%x, MSC1=0x%x, MSC2=0x%x\r\n",
								pMemCtrlRegs->msc0,
								pMemCtrlRegs->msc1,
								pMemCtrlRegs->msc2);
		EdbgOutputDebugString("0x%x\r\n", *(volatile UINT16 *)(0xBF900300+14));
	}
	
	
#if defined ( PLAT_LUBBOCK )
	//BLR->hex_led = 0x80808080;
#endif
	
	//EdbgOutputDebugString(NKSignon);
	EdbgOutputDebugString("Test...\r\n");

	EdbgOutputDebugString("Boot Loader, Version %s\r\n", EBOOT_VERSION_EXT);
	
#ifndef SABINAL
	// Temporarily clear RAM here.  fwxsc1.s will soon be modified to do this.
	EdbgOutputDebugString("Clearing RAM ... \r\n");
	memset((LPVOID)RAM_IMAGE_START, 0x0, 0x3eb5000);
	EdbgOutputDebugString("Complete!\r\n");
#endif

	v_pGPIOReg = (volatile GPIO_REGS *)GPIO_BASE_U_VIRTUAL;
	v_pPWM1Reg = (volatile PPWM1_REGS)PWM1_BASE_U_VIRTUAL;
	v_pPWM0Reg = (volatile PPWM0_REGS)PWM0_BASE_U_VIRTUAL;
	v_pCLKReg = (volatile PCLKMAN_REGS)CLK_BASE_U_VIRTUAL;
	v_pGPIOReg->GPCR_x |= GPIO_4;
	v_pGPIOReg->GPDR_x |= GPIO_4;			// set output mode
	v_pGPIOReg->GPCR_x |= GPIO_5;
	v_pGPIOReg->GPDR_x |= GPIO_5;			// set output mode
	
for( i=0;i<20;i++)     //add by houjg flash led 20 times
{
	v_pGPIOReg->GPCR_x |= GPIO_4;
	v_pGPIOReg->GPSR_x |= GPIO_5;
	msWait(50);
	v_pGPIOReg->GPSR_x |= GPIO_4;
	v_pGPIOReg->GPCR_x |= GPIO_5;
	msWait(50);
}
	
//	v_pGPIOReg->GPSR_x |= GPIO_21;	
//	v_pGPIOReg->GPDR_x |= GPIO_21;	

#if defined ( PLAT_LUBBOCK )
	//BLR->hex_led = 0;
#endif

	// init RomHdr
	memset((LPVOID)&RomHdr,-1,sizeof(ROMHDR));
    // Initialize driver globals area, so kernel knows we are present
    memset((LPVOID)&pDriverGlobals->eth,0,DBG_ETH_GLOBALS_SIZE);
    
   	EdbgOutputDebugString("DriverGlobal address = 0x%X\r\n", pDriverGlobals);

	pDriverGlobals->eth.EbootMagicNum = EBOOT_MAGIC_NUM;
	pDriverGlobals->eth.EbootDevice = BOOT_DEVICE_NONE;

    InitClock();
   //add by houjg
     EdbgOutputDebugString("LCD_Initialize... \r\n");
   	 LCD_Initialize();
     	 EdbgOutputDebugString ( "PWM1 CLOCK and LCD BACK On \r\n");
     	v_pCLKReg->cken |= 0x00000002;	// PWM1 clock enabled // LCD BACK ON  
     	v_pPWM0Reg->pwcr = 	0x00;//64;	
	v_pPWM0Reg->pwdr = 	0x9f;//20;		
	v_pPWM0Reg->pwpr = 	0xff;//40;
  	
    OEMGetRealTime(&st);

#ifndef SABINAL
    //
    //  Do not perform menu services for Sabinal
    //


	pEbootCFG = &EbootCFG;
	LoadEBootCFG(pEbootCFG);

	MyAddr.dwIP = pEbootCFG->IP;
	dwSubnetMask = pEbootCFG->subnetMask;
	delay = pEbootCFG->delay;

	delay = 10;
	
	EdbgOutputDebugString ( "Press On/Off button before reset to enter Boot Loader's Selection Menu,\r\n");
	EdbgOutputDebugString ( "and please keep On/Off Button pressed at least 10 seconds...\r\n");
	EdbgOutputDebugString ( "\r\nPress [ENTER] to download now or [SPACE] to cancel.\r\n");
	EdbgOutputDebugString ( "Else, Boot Loader will launch OS image whinch exists in Flash.\r\n");
	
	
	
	dwStartTime = OEMEthGetSecs();
	dwPrevTime = dwStartTime;
	dwCurrTime = dwStartTime;
	//selection = 'L';

		while((dwCurrTime - dwStartTime) <delay)