loadtools/scripts: w220.{config,init} => chimei.{config,init} Motorola W220, first touched by FreeCalypso in 2019-05, is an ODM phone made by Chi-Mei, and its peculiar property of relevance to loadtools is that it has XRAM on Calypso nCS3 instead of the usual nCS1 - which matters for fc-xram. We are now discovering other Chi-Mei phones including Sony Ericsson J120, and they share the same quirk of XRAM on nCS3 - hence we rename this loadtools target from w220 to chimei.

/*
 * This module implements the basic serial port opening operation.
 */

#include <sys/types.h>
#include <sys/file.h>
#include <sys/ioctl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

int target_fd;

open_serial_port(ttyport)
	char *ttyport;
{
	target_fd = open(ttyport, O_RDWR|O_NONBLOCK);
	if (target_fd < 0) {
		perror(ttyport);
		exit(1);
	}
	ioctl(target_fd, TIOCEXCL);
	return 0;
}