bios.c

嵌入式linux下ARM4210板的bootloader

#include "types.h"
#include "bios.h"
#include "board.h"
#include "console.h"
#include "utils.h"
#include "gunzip.h"

extern const unsigned long _rom_base;
extern const unsigned long system_table_offset;

extern const unsigned char sysinit_data[];
extern const unsigned char biosapi_data[];
extern const unsigned char tftp_data[];


int sys_init(struct system_table_struct *system_table, unsigned long rom_base, unsigned long dram_base)
{
	typedef int (SYSINIT)(struct system_table_struct *, unsigned long, unsigned long);
	SYSINIT *sys_init_ptr;

	memcpy((char *)SRAM_BASE, sysinit_data, 1024 * 3);
	sys_init_ptr = (SYSINIT *)SRAM_BASE;
	sys_init_ptr(system_table, rom_base, dram_base);

	return 0;
}

int biosapi_init(void)
{
	unsigned char *inbuf;
	unsigned long insize;
	unsigned char *outbuf;
	unsigned long outsize;
	struct biosapi_init_struct init_param;
	BIOSCALL *fp;

	inbuf = (unsigned char *)biosapi_data;
	outbuf = (unsigned char *)BIOS_API_ADDR;
	insize = 0x7fffffff;
	outsize = 0x7fffffff;
	gunzip(inbuf, &insize, outbuf, &outsize);

	init_param.rom_base = _rom_base;
	init_param.dram_base = DRAM_BASE;
	init_param.system_table_offset = system_table_offset;

	fp = (BIOSCALL *)outbuf;
	return (*fp)(0, (unsigned long)&init_param);  // Init BIOS call
}

int load_tftp(unsigned long mode, unsigned long param)
{
	unsigned char *ip_s;
	typedef int (TFTP)(unsigned long, unsigned long, unsigned long);
	unsigned char *inbuf;
	unsigned long insize;
	unsigned char *outbuf;
	unsigned long outsize;
	unsigned long ip;
	TFTP *tftp_ptr;

        //Modify to your ip addr, default is : 10.1.1.118
        //add by dailzh, more information for visiting http://www.dailzh.net

        ip_s=(unsigned char *)&ip;
        ip_s[3]=192;	
        ip_s[2]=168;
	ip_s[1]=168;
	ip_s[0]=101;

	inbuf = (unsigned char *)tftp_data;
	outbuf = (unsigned char *)TFTP_ADDR;
	insize = 0x7fffffff;
	outsize = 0x7fffffff;
	gunzip(inbuf, &insize, outbuf, &outsize);
	tftp_ptr = (TFTP *)TFTP_ADDR;

	//when modify ip addr, note this line
	//ip = bios_tftp_ipaddr();
	
	tftp_ptr(ip, mode, param);

	return 0;
}

int main_menu(struct system_table_struct *system_table)
{
	int list[] =
	{
		BOOT_UPDATE_FIRMWARE,
		BOOT_LOAD_PROGRAM,
	};
	
	int select;
	int ch;

	printf("1 - Update FirmWare\r\n");
	printf("2 - Load uClinux to SDRAM\r\n");
	printf("\r\n");
	printf("Enter your choice:");

	while (1)
	{
		ch = getch();
		if (ch >= '1' && ch <= '2') 
		{
			putch(ch);
			select = list[ch - '1'];
			break;
		}
	}
	printf("\r\n\r\n");
	return select;
}

int menu(struct system_table_struct *system_table)
{
	int select;

	while (1) 
        {
		select = main_menu(system_table);

		switch (select) 
                {
		case BOOT_LOAD_PROGRAM:
			load_tftp(select, 0);
                        break;
		case BOOT_UPDATE_FIRMWARE:
			break;
		default:
			break;
		}
	}

	return select;
}

/*
 *  Main BIOS functions
 */

unsigned char *bios_main(void)
{
	struct system_table_struct *system_table;
	unsigned char *exec_addr;
	unsigned long startup_mode;
	int i, ch;

        struct system_table_struct system_table1 = 
        {

	bios_size:      0xc000,

	vendor_id:      0x11F6,
	device_id:      0x8000,

	sub_vendor_id:  0x11F6,
	sub_device_id:  0x8000,

	rev:            0,

	sys_reg_base:   0x03ff0000,
	sys_clock:      fMCLK_MHz,
	ext_clock:      0xffffffff,

	rom_table:      {{0x00080000, 16, 0x00000060},
	                 {0x00000000,  8, 0x00000060},
	                 {0x00000000,  8, 0x00000060},
	                 {0x00000000,  8, 0x00000060},
	                 {0x00000000,  8, 0x00000060},
	                 {0x00000000,  8, 0x00000060}},

	dram_table:     {{0x01000000, 32, 0x00000398},
	                 {0x00000000, 32, 0x00000398},
	                 {0x00000000, 32, 0x00000398},
	                 {0x00000000, 32, 0x00000398}},

	system_table_size:     sizeof(struct system_table_struct),

	partition_table_offset:      0x0000f000,
	partition_table_size:        sizeof(struct partition_table_struct),

	ext_base:       0x03fd0000,
	ext_table:      {{            32, 0x00000fff},
	                 {            32, 0x00000fff},
	                 {            32, 0x00000fff},
	                 {            32, 0x00000fff}},

	iop:            {0x00020070, 0x2ad00300, ~0x00020070},
	uart:           {{0x80000000, 0, 0, 0, 0, 0, 0}, {0x80000000, 1, 0, 0, 0, 0, 0}},

	eth:            {0x80000000, {0x00, 0x80, 0x48, 0x88, 0x00, 0x00}},
	ne2000:         {0x80000000, 0, {0x00, 0x80, 0x48, 0x88, 0x00, 0x01}},
	uart16550:      {0x80000000, 1, 13000000},
	pc97338:        {0x80000000, 1},

	startup_mode:   BOOT_MENU,
	tftp_ipaddr:    0xc0a8a865,
	             //* ip=192.168.168.101
};



	//system_table = (struct system_table_struct *)(_rom_base + system_table_offset);
	system_table =(struct system_able_struct *) (&system_table1);

	sys_init(system_table, _rom_base, DRAM_BASE);
	console_init();

	printf("\r\n\r\n");
	printf("This program is base on the BIOS, rewrited by www.dailzh.net\r\n");
	printf("uClinux BootLoader for SAMSUNG S3C4510B v1.0 \r\n\r\n");

	biosapi_init();
	printf("\r\n");


        menu(system_table);

	return (unsigned char *)_rom_base;
}