main.c

XSBase255_Linux_C开发版BootLoader源代码.gz

/////////////////////////////////////////////////////////////////////////////////
// Copyright(c) 2001-2002 Emdoor Co,.ltd. All rights reserved.
//
// Module name:
//      main.c
//
// Description:
//
//
// Author:
//      bedguy
//
// Created:
//      2002.10
//
///////////////////////////////////////////////////////////////////////////////

#include "main.h"
#include "scc.h"

#define FND     0x14000000 

#define FND_CS0 (*((volatile unsigned short *)(FND))) 
#define FND_CS1 (*((volatile unsigned short *)(FND + 0x00100000))) 
#define FND_CS2 (*((volatile unsigned short *)(FND + 0x00200000))) 
#define FND_CS3 (*((volatile unsigned short *)(FND + 0x00300000)))



LOADER_STATUS	status;

// function prototype.
bool	DoPrintfHelp		(int argc, char **argv);


void c_main(){
	int		i;
	bool	autoboot=true;
	char	cmd[128];
	long	timeout;
	int		argc=0;
	char	*argv[MAX_ARGS];
	CMD_TBL	*cptr;
	short 	led_value[4] ;
	 
    (*((volatile unsigned short *)( 0x16000000)))=~0x4;

    led_value[0]= 0x5b5b;
    led_value[1]= 0x0606;
    led_value[2]= 0x3f3f;
    led_value[3]= 0x0000;
 

	// initiate status.
	status.terminalSpeed = SERIAL_SPEED;
	status.downloadSpeed = SERIAL_DOWNLOAD_SPEED;


	///// initiate serial and timer. //////////////////////////////////////////
	// serial and timer init.
	SerialInit(status.terminalSpeed);
	TimerInit();

	///// printf the required GPL string. //////////////////////////////////////
	printf("\n\n");
	printf(" "PACKAGE "-" VERSION "\n Copyright (C) 2002 Emdoor Co,. ltd.\n");
	printf(" Support: http://www.emdoor.com\n");
	printf("\n");

	//MemCpy((char *)KERNEL_DRAM_BASE, (char *)KERNEL_SRAM_BASE, KERNEL_MAX_SIZE);	// kernel image reload

	EthInit();

	///// wait 10 seconds before starting autoboot. ///////////////////////////
	printf("Autoboot in progress, press any key to stop ");

	for (i=0; i<3; i++){
		timeout = GetTime()+1;	// 1檬埃 Delay

        FND_CS0 = led_value[i];
        FND_CS1 = led_value[i];
        FND_CS2 = led_value[i];
        FND_CS3 = led_value[i];

		printf(".");
		while (GetTime()<timeout){
			if ((FFLSR & 0x00000001)){	// Serial肺 Input捞 乐阑 锭.
				FFRBR;
				autoboot = false;
				break;
			}
		}
		if (autoboot==false) break;
	}


	///// No key was pressed, so proceed booting the kernel. //////////////////
	if (autoboot){
		printf("Autoboot started.\n");
		for (cptr=cmdTbl; cptr->cmd; cptr++){
			if (!StrCmp(cptr->cmd, "boot")) break;
		}
		DoBootKernel(cptr, 1, 0);
	}


	///// Key was pressed, so proceed command mode. ///////////////////////////
	printf("\nAutoboot aborted\n");
	printf("Type \"help\" to get a list of commands\n");

	// the command loop. endless, of course.
	for(;;) {
		DisplayPrompt(NULL);

		// wait an hour to get a command.
		GetCommand(cmd, 128, 3600);
		if (!cmd || !cmd[0]) continue;
		
		argc = GetArgs(cmd, argv);
		for (cptr=cmdTbl; cptr->cmd; cptr++){
			if (!StrCmp(argv[0], cptr->cmd)){
				(cptr->run)(cptr, argc, argv);
				break;
			}
		}
		if (!StrCmp(argv[0], "help") || !StrCmp(argv[0], "?")){
			DoPrintfHelp(argc, argv);
		} else if (!(cptr->cmd)){
			printf("\tUnknown command : %s\n", argv[0]);
		}
	}
} // CMain.


bool DoPrintfHelp(int argc, char **argv){
	CMD_TBL	*cptr;

	if (argc==1){
		printf("Help for " PACKAGE "-" VERSION "\n");
		printf("The following commands are supported :\n");
		printf("  help                             Help for commands.\n");

		for (cptr=cmdTbl; cptr->cmd; cptr++){
				if (cptr->helpMore) printf(cptr->helpMore);
		}
		printf("\n");
	}

	else {
		printf("\tUnknown command : %s\n", argv[0]);
	}
	return true;
}