2410bios.c

S3C2410开发板的BIOS源程序（GEC）。

#include "def.h"
#include "2410addr.h"
#include "2410lib.h"
#include "2410slib.h"
#include "mmu.h"
#include "uart.h"
#include "timer.h"
#include "39vf160.h"
#include "LCD.h"
#include "PowerManage.h"

void call_linux(U32 a0, U32 a1, U32 a2);
void UsbMain(void);
void comdownload(void);
void NandWrite(void);
void NandLoadRun(void);
void NandErase(void);

extern U32 downloadAddress, downloadFileSize;
static EnvParams Env;
U32	Console_Uart = 0;
U32	Console_Baud = 115200;
char boot_params[256];

static short DsAutoBoot;
static short NorFlashSupport = 0 ;

volatile int PwrKeyChkEnd;

//*****************************************************************************
void GetBootParam(void)
{
	U16 cmd_cnt = 0;
	char tmp[256] = {0};
	
	puts("Set boot params, press Enter to finish, Esc to abort\n");
	while(1) {
		char c = getch();
		if(c==0x1b) 
			return;
		
		if(c==0xd)
			break;
		if((c==0x8)&&(cmd_cnt)) {			
			cmd_cnt -= 1;
			tmp[cmd_cnt] = 0;
			putch(c);
			putch(' ');
			putch(c);
		}
		else {
			if(cmd_cnt<255) {
				putch(c);
				tmp[cmd_cnt++] = c;
				tmp[cmd_cnt]   = 0;
			}
		}		
	}

	for(cmd_cnt=0; tmp[cmd_cnt]; cmd_cnt++)
		boot_params[cmd_cnt] = tmp[cmd_cnt];
	boot_params[cmd_cnt] = 0;			
}

//*****************************************************************************
static __inline int RtcAlmWake(void)
{	
	return ((rBCDHOUR==rALMHOUR)&&(rBCDMIN==rALMMIN));
}

//*****************************************************************************
static void ProgNorFlash(void)
{
	if(NorFlashSupport) {
		SectorProg(0, (U16 *)downloadAddress, downloadFileSize);
	}
}

//*****************************************************************************
void SDRAM_Test(void)
{
    int i;
    U32 data;
    int memError=0;
    U32 *pt;
    
    printf("Memory Test(%xh-%xh):WR",_RAM_STARTADDRESS,(_ISR_STARTADDRESS&0xfff0000));

    pt=(U32 *)_RAM_STARTADDRESS;
    while((U32)pt<(_ISR_STARTADDRESS&0xffff0000))
    {
	*pt=(U32)pt;
	pt++;
    }

    printf("\b\bRD");
    pt=(U32 *)_RAM_STARTADDRESS;
	
    while((U32)pt<(_ISR_STARTADDRESS&0xffff0000))
    {
	data=*pt;
	if(data!=(U32)pt)
	{
	    memError=1;
	    printf("\b\bFAIL:0x%x=0x%x\n",i,data);
	    break;
	}
	pt++;
    }

    if(memError==0)printf("\b\bO.K.\n");
}
/****************** by chang *****************************/
static void Set_Auto_Run(void)
{
	printf("Please Input Number:");
	Env.Os_Auto_Flag=getch()-'0';
	//Env.Os_Auto_Flag=1;
	printf("%x\n",Env.Os_Auto_Flag);
	NFSaveParams((char *)&Env);
}
/***************** by chang *****************************/
struct {
	void (*fun)(void);
	char *tip;
}CmdTip[] = {
				{UsbMain, "USB download file"},
				{comdownload, "Uart download file"},
				{NandWrite, "Write Nand flash with download file"},
				{NandLoadRun, "Load Pragram from Nand flash and run"},
				{NandErase, "Erase Nand flash regions"},
				{ProgNorFlash, "Write NOR flash with download file"},
				{GetBootParam, "Set boot params"},
				//{NandLoadRunW,"Run Wince"},
				{Set_Auto_Run,"Set AutoBoot parameter,1:linux 2:wince"},
				//{EnterPowerOff, "Test Power off"},
				//{SDRAM_Test, "test SDRAM Memory"},
				{0, 0}						
			};

static int Wince_Run=0;	
//*****************************************************************************
static void AutoBoot(U32 i)
{
	static cnt = 10;		//5s
	if(!--cnt) {
		ReleaseBiosTimerEvent(i);
		//if(!DsAutoBoot)
		//	NandLoadRun();
	if((!DsAutoBoot)&&(Env.Os_Auto_Flag==1))NandLoadRun();
	if(Env.Os_Auto_Flag==2)Wince_Run=1;
	//if((!DsAutoBoot)&&(Env.Os_Auto_Flag==2))NandLoadRun();
	}
	rGPBDAT ^= 1<<5;
}

/******************************************************************************
【功能说明】系统主函数
******************************************************************************/
int Main(U32 RstStat)
{
	int i;
//	ChangeClockDivider(1, 1);	// 1:2:4
//	ChangeMPllValue(172,4,1);	//FCLK=180.0Mhz
	//SetClockDivider(0, 1);
	//SetSysFclk(FCLK_96M);		//to save power, use 48M

	SetClockDivider(1, 1);
	SetSysFclk(FCLK_200M);		//to save power, use 50M

	Port_Init();
	Isr_Init();

	Uart_Init(0, Console_Baud);
	Uart_Select(Console_Uart);	
	
#if 1			//bank0 modified to RO_START
	MMU_Init();	//MMU should be reconfigured or turned off for the debugger, 
	//After downloading, MMU should be turned off for the MMU based program,such as WinCE.	
#else
	MMU_EnableICache();
	UsbMain();
#endif
	
	//enable GPIO,UART0,PWM TIMER,NAND FLASH module clock
//	DisableModuleClock(CLOCK_ALL);
	EnableModuleClock(CLOCK_ALL);	

	LcdBackLightOff();
	Delay( 0 ) ;

	putch('\n');

	PwrKeyChkInit();
	
	if(RstStat&1) {
		puts("Power on reset\n");
//		EnterPowerOff();
	}
	if(RstStat&4) {
		puts("Watchdog reset\n");
//		EnterPowerOff();
	}
	if(RstStat&2) {
		puts("Power-off reset\n");
		if(RtcAlmWake()) {
			puts("Alarm wake up\n");
			printf("RTC hr : %d, min : %d\nALM hr : %d, min : %d\n", rBCDHOUR, rBCDMIN, rALMHOUR, rALMMIN);
		} else if( PwrKeyWake() ) {			
			PwrKeyChkEnd = 1;
			RequestBiosTimerEvent(1, PwrKeyChk);	//reload value = 1, 10ms*1 = 10ms
			while(PwrKeyChkEnd>0);
			if(PwrKeyChkEnd!=0)
				EnterPowerOff();
			puts("Power key wake up\n");
		}
	}	
		
	rMISCCR &= ~(0x3007);		//USB port0,1 = normal, D0~D31 pull-up enable

	Set_Tout1_Pwm( 60 ) ;
	//Test_Lcd_Tft_16Bpp_240_320();
	
	//Beep( 2000, 500 ) ;
	
	
	RequestBiosTimerEvent(50, AutoBoot);	//reload value = 50, 10ms*50 = 500ms
	NFSearchParams((char *)&Env);
	printf("Env.Os_Auto_Flag=%x\n",Env.Os_Auto_Flag);
	
	puts("************************************\n");
	puts("*                                  *\n");
	puts("*     GEC2410 BIOS V1.1            *\n");
	puts("*     http://www.gd-emb.org        *\n");
	puts("*                                  *\n");
	puts("************************************\n");
	
	if(rBWSCON&6)
	{
		U32 nor_flash_id;
		
		nor_flash_id = GetFlashID();
		puts("NOR Flash Boot, ");
		printf("Read ID is : 0x%x\n", nor_flash_id);
		
		if ( (nor_flash_id==0x278200bf) | (nor_flash_id==0x234b00bf) )
		{
			NorFlashSupport = 1 ;
			if(nor_flash_id==0x278200bf)		puts("SST39VF160 found\n");
			if(nor_flash_id==0x234b00bf)		puts("SST39VF1601 found\n");
		}
		else
			printf( "Not supported NorFlash found!!!\n" ) ;
		
	}
	else 
		puts("NAND Flash Boot\n");
	
	
	while(1)
	{
		U8 idx=0;
		puts("\nPlease select function : \n");	
		for(i=0; CmdTip[i].fun!=0; i++)
			printf("%d : %s\n", i, CmdTip[i].tip);
		while((!idx)&&(Wince_Run!=1))
		{
			idx=getkey();
			//if(Wince_Run==1)NandLoadRunW();
			if((idx==0)&&(Wince_Run==1))NandLoadRunW();//(*CmdTip[7].fun)();
		}
		//if(Wince_Run==1)(*CmdTip[7].fun)();
		DsAutoBoot = 1;	//when get a key press, disable auto boot
		idx -= '0';
		printf("%x\n",idx);
		if(idx<i)
		{
			(*CmdTip[idx].fun)();
		}
		Wince_Run=0;
		
	}
}