main.cpp

arm_bootloader _flash writter &USB

#include <io.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>

int main(int argc, char *argv[])
{
	FILE *fp;
	int fd;
	int file_size;
	int flash_block;

	if(argc < 3)
	{
		printf("Usage:\nFlash_Writter image_to_written num_Flash_block\n");
		return 0;
	}

	// Check whether the image file exists...
	fd = open(argv[1], _O_RDONLY);
	if(fd < 0)
	{
		printf("Open image file error !!\n");
		return 0;
	}
	file_size = filelength(fd);
	printf("Image size:%d\n\n", file_size);
	close(fd);

	// Check whether the flash block number legal...
	flash_block = atoi(argv[2]);
	if(flash_block < 0 || flash_block > 4096)
	{
		printf("Invalid flash block number !!\n");
		printf("Legal range is 0 ~ 4096\n");
		return 0;
	}

	// Generate script...
	printf("Begin to generate script file...\n");
	fp = fopen("script.txt", "w");
	if(fp == NULL)
	{
		printf("Open file error !!\n");
		return 0;
	}

	// reset the CPU, using software reset instead of hardware reset
	// which could let CPU halt precisely in 0x00000000
	fprintf(fp, "rsettype 6\n");
	fprintf(fp, "r\n");
	// set CPU @ max speed
	fprintf(fp, "speed 12000\n\n");
	// Write Flash_Writter program into CPU
	fprintf(fp, "loadbin Flash_Writter.bin 0x00000000\n\n");
	// Write image to SDRAM
	fprintf(fp, "loadbin %s 0x30000000\n", argv[1]);
	// Write "1" to let the flash_writter go
	fprintf(fp, "w4 0x00000FF4 0x%x\n", 1);
	// Write destination Flash block number...
	fprintf(fp, "w4 0x00000FF8 0x%X\n", flash_block);
	// Write file size...
	fprintf(fp, "w4 0x00000FFC 0x%X\n\n", file_size);
	// Show the memory content...
	fprintf(fp, "mem 0xFF8 8\n");
	// Set PC to desired position...
	fprintf(fp, "setpc 0x00000000\n");
	// Let the program run....
	fprintf(fp, "go\n");
	// Exit J-Link command shell
	fprintf(fp, "exit\n");
	fclose(fp);
	
	// Call J-link command shell to exec the script...
	system("JLink script.txt\n");

	//system("pause\n");

	return 0;
}