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Carl-Daniel Hailfingere51ea102009-11-23 19:20:11 +00001/*
2 * This file is part of the flashrom project.
3 *
4 * Copyright (C) 2009 Urja Rannikko <urjaman@gmail.com>
Carl-Daniel Hailfingerefa151e2010-01-06 16:09:10 +00005 * Copyright (C) 2009,2010 Carl-Daniel Hailfinger
Carl-Daniel Hailfingere51ea102009-11-23 19:20:11 +00006 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include <stdio.h>
23#include <stdlib.h>
24#include <unistd.h>
25#include "flash.h"
26#include <string.h>
27#include <ctype.h>
28#include <fcntl.h>
29#include <sys/types.h>
30#include <sys/stat.h>
31#include <errno.h>
32#include <inttypes.h>
Patrick Georgie48654c2010-01-06 22:14:39 +000033#ifdef _WIN32
34#include <conio.h>
35#else
Carl-Daniel Hailfingere51ea102009-11-23 19:20:11 +000036#include <termios.h>
Patrick Georgie48654c2010-01-06 22:14:39 +000037#endif
Carl-Daniel Hailfingere51ea102009-11-23 19:20:11 +000038
Patrick Georgie48654c2010-01-06 22:14:39 +000039fdtype sp_fd;
Carl-Daniel Hailfingere51ea102009-11-23 19:20:11 +000040
41void __attribute__((noreturn)) sp_die(char *msg)
42{
43 perror(msg);
44 exit(1);
45}
46
Patrick Georgie48654c2010-01-06 22:14:39 +000047#ifndef _WIN32
Carl-Daniel Hailfingere51ea102009-11-23 19:20:11 +000048struct baudentry {
49 int flag;
50 unsigned int baud;
51};
52
53/* I'd like if the C preprocessor could have directives in macros */
54#define BAUDENTRY(baud) { B##baud, baud },
55static const struct baudentry sp_baudtable[] = {
56 BAUDENTRY(9600)
57 BAUDENTRY(19200)
58 BAUDENTRY(38400)
59 BAUDENTRY(57600)
60 BAUDENTRY(115200)
61#ifdef B230400
62 BAUDENTRY(230400)
63#endif
64#ifdef B460800
65 BAUDENTRY(460800)
66#endif
67#ifdef B500000
68 BAUDENTRY(500000)
69#endif
70#ifdef B576000
71 BAUDENTRY(576000)
72#endif
73#ifdef B921600
74 BAUDENTRY(921600)
75#endif
76#ifdef B1000000
77 BAUDENTRY(1000000)
78#endif
79#ifdef B1152000
80 BAUDENTRY(1152000)
81#endif
82#ifdef B1500000
83 BAUDENTRY(1500000)
84#endif
85#ifdef B2000000
86 BAUDENTRY(2000000)
87#endif
88#ifdef B2500000
89 BAUDENTRY(2500000)
90#endif
91#ifdef B3000000
92 BAUDENTRY(3000000)
93#endif
94#ifdef B3500000
95 BAUDENTRY(3500000)
96#endif
97#ifdef B4000000
98 BAUDENTRY(4000000)
99#endif
100 {0, 0} /* Terminator */
101};
Patrick Georgie48654c2010-01-06 22:14:39 +0000102#endif
Carl-Daniel Hailfingere51ea102009-11-23 19:20:11 +0000103
Patrick Georgie48654c2010-01-06 22:14:39 +0000104fdtype sp_openserport(char *dev, unsigned int baud)
Carl-Daniel Hailfingere51ea102009-11-23 19:20:11 +0000105{
Patrick Georgie48654c2010-01-06 22:14:39 +0000106#ifdef _WIN32
107 HANDLE fd;
108 fd = CreateFile(dev, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
109 if (fd == INVALID_HANDLE_VALUE) {
110 sp_die("Error: cannot open serial port");
111 }
112 DCB dcb;
113 if (!GetCommState(fd, &dcb)) {
114 sp_die("Error: Could not fetch serial port configuration");
115 }
116 switch (baud) {
117 case 9600: dcb.BaudRate = CBR_9600; break;
118 case 19200: dcb.BaudRate = CBR_19200; break;
119 case 38400: dcb.BaudRate = CBR_38400; break;
120 case 57600: dcb.BaudRate = CBR_57600; break;
121 case 115200: dcb.BaudRate = CBR_115200; break;
122 default: sp_die("Error: Could not set baud rate");
123 }
124 dcb.ByteSize=8;
125 dcb.Parity=NOPARITY;
126 dcb.StopBits=ONESTOPBIT;
127 if (!SetCommState(fd, &dcb)) {
128 sp_die("Error: Could not change serial port configuration");
129 }
130 return fd;
131#else
Carl-Daniel Hailfingere51ea102009-11-23 19:20:11 +0000132 struct termios options;
133 int fd, i;
134 fd = open(dev, O_RDWR | O_NOCTTY | O_NDELAY);
135 if (fd < 0)
136 sp_die("Error: cannot open serial port");
137 fcntl(fd, F_SETFL, 0);
138 tcgetattr(fd, &options);
139 for (i = 0;; i++) {
140 if (sp_baudtable[i].baud == 0) {
141 close(fd);
Sean Nelsonebb4f5f2010-01-09 23:46:39 +0000142 msg_perr(
Carl-Daniel Hailfingere51ea102009-11-23 19:20:11 +0000143 "Error: cannot configure for baudrate %d\n",
144 baud);
145 exit(1);
146 }
147 if (sp_baudtable[i].baud == baud) {
148 cfsetispeed(&options, sp_baudtable[i].flag);
149 cfsetospeed(&options, sp_baudtable[i].flag);
150 break;
151 }
152 }
153 options.c_cflag &= ~(PARENB | CSTOPB | CSIZE | CRTSCTS);
154 options.c_cflag |= (CS8 | CLOCAL | CREAD);
155 options.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
156 options.c_iflag &= ~(IXON | IXOFF | IXANY | ICRNL | IGNCR | INLCR);
157 options.c_oflag &= ~OPOST;
158 tcsetattr(fd, TCSANOW, &options);
159 return fd;
Patrick Georgie48654c2010-01-06 22:14:39 +0000160#endif
Carl-Daniel Hailfingere51ea102009-11-23 19:20:11 +0000161}
162
163void sp_flush_incoming(void)
164{
Patrick Georgie48654c2010-01-06 22:14:39 +0000165#ifdef _WIN32
166 PurgeComm(sp_fd, PURGE_RXCLEAR);
167#else
Patrick Georgi3b6237d2010-01-06 19:09:40 +0000168 tcflush(sp_fd, TCIFLUSH);
Patrick Georgie48654c2010-01-06 22:14:39 +0000169#endif
Carl-Daniel Hailfingere51ea102009-11-23 19:20:11 +0000170 return;
171}
Carl-Daniel Hailfingerefa151e2010-01-06 16:09:10 +0000172
173int serialport_shutdown(void)
174{
Patrick Georgie48654c2010-01-06 22:14:39 +0000175#ifdef _WIN32
176 CloseHandle(sp_fd);
177#else
Carl-Daniel Hailfingerefa151e2010-01-06 16:09:10 +0000178 close(sp_fd);
Patrick Georgie48654c2010-01-06 22:14:39 +0000179#endif
Carl-Daniel Hailfingerefa151e2010-01-06 16:09:10 +0000180 return 0;
181}
182
183int serialport_write(unsigned char *buf, unsigned int writecnt)
184{
Patrick Georgie48654c2010-01-06 22:14:39 +0000185 long tmp = 0;
Carl-Daniel Hailfingerefa151e2010-01-06 16:09:10 +0000186
Patrick Georgi3b6237d2010-01-06 19:09:40 +0000187 while (writecnt > 0) {
Patrick Georgie48654c2010-01-06 22:14:39 +0000188#ifdef _WIN32
189 WriteFile(sp_fd, buf, writecnt, &tmp, NULL);
190#else
Patrick Georgi3b6237d2010-01-06 19:09:40 +0000191 tmp = write(sp_fd, buf, writecnt);
Patrick Georgie48654c2010-01-06 22:14:39 +0000192#endif
Carl-Daniel Hailfingerefa151e2010-01-06 16:09:10 +0000193 if (tmp == -1)
194 return 1;
195 if (!tmp)
Sean Nelsonebb4f5f2010-01-09 23:46:39 +0000196 msg_pdbg("Empty write\n");
Patrick Georgi3b6237d2010-01-06 19:09:40 +0000197 writecnt -= tmp;
198 buf += tmp;
Carl-Daniel Hailfingerefa151e2010-01-06 16:09:10 +0000199 }
200
201 return 0;
202}
203
204int serialport_read(unsigned char *buf, unsigned int readcnt)
205{
Patrick Georgie48654c2010-01-06 22:14:39 +0000206 long tmp = 0;
Carl-Daniel Hailfingerefa151e2010-01-06 16:09:10 +0000207
Patrick Georgi3b6237d2010-01-06 19:09:40 +0000208 while (readcnt > 0) {
Patrick Georgie48654c2010-01-06 22:14:39 +0000209#ifdef _WIN32
210 ReadFile(sp_fd, buf, readcnt, &tmp, NULL);
211#else
Patrick Georgi3b6237d2010-01-06 19:09:40 +0000212 tmp = read(sp_fd, buf, readcnt);
Patrick Georgie48654c2010-01-06 22:14:39 +0000213#endif
Carl-Daniel Hailfingerefa151e2010-01-06 16:09:10 +0000214 if (tmp == -1)
215 return 1;
216 if (!tmp)
Sean Nelsonebb4f5f2010-01-09 23:46:39 +0000217 msg_pdbg("Empty read\n");
Patrick Georgi3b6237d2010-01-06 19:09:40 +0000218 readcnt -= tmp;
219 buf += tmp;
Carl-Daniel Hailfingerefa151e2010-01-06 16:09:10 +0000220 }
221
222 return 0;
223}