tftpput.c

arm学习报告

#include "tftpput.h"
#include "hexput.h"
#include "bioscall.h"

extern int startup_mode;
extern int startup_param;

static unsigned char *buf;
static int data_len;

int tftp_put_begin(void)
{
	switch (startup_mode) {		
	case BOOT_LOAD_PROGRAM:
	case BOOT_UPDATE_FIRMWARE:
	case BOOT_UPDATE_BIOS:		
		printf("Starting the TFTP download...\r\n");
		buf = (unsigned char *)0x00008000;
		data_len = 0;
		break;
	default:
		break;
	}
	return 0;
}

int tftp_put(unsigned char *data, int len)
{
	static int count = 0;

	count += len;
	if (count > 32 * 1024) {
		printf(".");
		count = 0;
	}

	switch (startup_mode) {		
	case BOOT_LOAD_PROGRAM:
	case BOOT_UPDATE_FIRMWARE:
	case BOOT_UPDATE_BIOS:	
		memcpy(buf + data_len, data, len);
		data_len += len;
		break;
	default:
		break;
	}
	return 0;
}

int update_bios(unsigned char *bios, int size)
{
//IS NOT COMPLETED!
; //void 

}


int update_firmware(unsigned char *firmware, int size)
{
//IS NOT COMPLETED!
; //void 

}

int tftp_put_end(void)
{
	int ch;
	unsigned long l;

	printf("\r\n");

	switch (startup_mode) {
	case BOOT_LOAD_PROGRAM:
		asm(    "
		        ldr     r14, =0x00008000;
		        mov     PC, r14; "
		);//run uClinux
		break;
		
	case BOOT_UPDATE_FIRMWARE:
		update_firmware(buf, data_len);
		break;
	
	case BOOT_UPDATE_BIOS:
		update_bios(buf, data_len);
		break;
		
	default:
		break;
	}

	printf("Reboot? (y/n) ");
	while (1) {
		ch = getch();
		if (ch == 'y' || ch == 'Y') {
			putch(ch);
			bios_reboot();
		}
		if (ch == 'n' || ch == 'N') {
			putch(ch);
			break;
		}
	}
	printf("\r\n\r\n");

	return 0;
}