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/*
* This file is part of the flashrom project.
*
* Copyright (C) 2009 Urja Rannikko <urjaman@gmail.com>
* Copyright (C) 2009,2010 Carl-Daniel Hailfinger
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <ctype.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <errno.h>
#include <inttypes.h>
#ifdef _WIN32
#include <conio.h>
#else
#include <termios.h>
#endif
#include "flash.h"
#include "programmer.h"
fdtype sp_fd;
void __attribute__((noreturn)) sp_die(char *msg)
{
perror(msg);
exit(1);
}
#ifndef _WIN32
struct baudentry {
int flag;
unsigned int baud;
};
/* I'd like if the C preprocessor could have directives in macros */
#define BAUDENTRY(baud) { B##baud, baud },
static const struct baudentry sp_baudtable[] = {
BAUDENTRY(9600)
BAUDENTRY(19200)
BAUDENTRY(38400)
BAUDENTRY(57600)
BAUDENTRY(115200)
#ifdef B230400
BAUDENTRY(230400)
#endif
#ifdef B460800
BAUDENTRY(460800)
#endif
#ifdef B500000
BAUDENTRY(500000)
#endif
#ifdef B576000
BAUDENTRY(576000)
#endif
#ifdef B921600
BAUDENTRY(921600)
#endif
#ifdef B1000000
BAUDENTRY(1000000)
#endif
#ifdef B1152000
BAUDENTRY(1152000)
#endif
#ifdef B1500000
BAUDENTRY(1500000)
#endif
#ifdef B2000000
BAUDENTRY(2000000)
#endif
#ifdef B2500000
BAUDENTRY(2500000)
#endif
#ifdef B3000000
BAUDENTRY(3000000)
#endif
#ifdef B3500000
BAUDENTRY(3500000)
#endif
#ifdef B4000000
BAUDENTRY(4000000)
#endif
{0, 0} /* Terminator */
};
#endif
fdtype sp_openserport(char *dev, unsigned int baud)
{
#ifdef _WIN32
HANDLE fd;
char *dev2 = dev;
if ((strlen(dev) > 3) && (tolower((unsigned char)dev[0]) == 'c') &&
(tolower((unsigned char)dev[1]) == 'o') &&
(tolower((unsigned char)dev[2]) == 'm')) {
dev2 = malloc(strlen(dev) + 5);
strcpy(dev2, "\\\\.\\");
strcpy(dev2 + 4, dev);
}
fd = CreateFile(dev2, GENERIC_READ | GENERIC_WRITE, 0, NULL,
OPEN_EXISTING, 0, NULL);
if (dev2 != dev)
free(dev2);
if (fd == INVALID_HANDLE_VALUE) {
sp_die("Error: cannot open serial port");
}
DCB dcb;
if (!GetCommState(fd, &dcb)) {
sp_die("Error: Could not fetch serial port configuration");
}
switch (baud) {
case 9600: dcb.BaudRate = CBR_9600; break;
case 19200: dcb.BaudRate = CBR_19200; break;
case 38400: dcb.BaudRate = CBR_38400; break;
case 57600: dcb.BaudRate = CBR_57600; break;
case 115200: dcb.BaudRate = CBR_115200; break;
default: sp_die("Error: Could not set baud rate");
}
dcb.ByteSize = 8;
dcb.Parity = NOPARITY;
dcb.StopBits = ONESTOPBIT;
if (!SetCommState(fd, &dcb)) {
sp_die("Error: Could not change serial port configuration");
}
return fd;
#else
struct termios options;
int fd, i;
fd = open(dev, O_RDWR | O_NOCTTY | O_NDELAY);
if (fd < 0)
sp_die("Error: cannot open serial port");
fcntl(fd, F_SETFL, 0);
tcgetattr(fd, &options);
for (i = 0;; i++) {
if (sp_baudtable[i].baud == 0) {
close(fd);
msg_perr("Error: cannot configure for baudrate %d\n",
baud);
exit(1);
}
if (sp_baudtable[i].baud == baud) {
cfsetispeed(&options, sp_baudtable[i].flag);
cfsetospeed(&options, sp_baudtable[i].flag);
break;
}
}
options.c_cflag &= ~(PARENB | CSTOPB | CSIZE | CRTSCTS);
options.c_cflag |= (CS8 | CLOCAL | CREAD);
options.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
options.c_iflag &= ~(IXON | IXOFF | IXANY | ICRNL | IGNCR | INLCR);
options.c_oflag &= ~OPOST;
tcsetattr(fd, TCSANOW, &options);
return fd;
#endif
}
void sp_flush_incoming(void)
{
#ifdef _WIN32
PurgeComm(sp_fd, PURGE_RXCLEAR);
#else
tcflush(sp_fd, TCIFLUSH);
#endif
return;
}
int serialport_shutdown(void)
{
#ifdef _WIN32
CloseHandle(sp_fd);
#else
close(sp_fd);
#endif
return 0;
}
int serialport_write(unsigned char *buf, unsigned int writecnt)
{
long tmp = 0;
while (writecnt > 0) {
#ifdef _WIN32
WriteFile(sp_fd, buf, writecnt, &tmp, NULL);
#else
tmp = write(sp_fd, buf, writecnt);
#endif
if (tmp == -1) {
msg_perr("Serial port write error!\n");
return 1;
}
if (!tmp)
msg_pdbg("Empty write\n");
writecnt -= tmp;
buf += tmp;
}
return 0;
}
int serialport_read(unsigned char *buf, unsigned int readcnt)
{
long tmp = 0;
while (readcnt > 0) {
#ifdef _WIN32
ReadFile(sp_fd, buf, readcnt, &tmp, NULL);
#else
tmp = read(sp_fd, buf, readcnt);
#endif
if (tmp == -1) {
msg_perr("Serial port read error!\n");
return 1;
}
if (!tmp)
msg_pdbg("Empty read\n");
readcnt -= tmp;
buf += tmp;
}
return 0;
}
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