1 /*
2 * Copyright (c) 2002,03 Bernd Walter Computer Technology
3 * http://www.bwct.de
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the author nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Thanks to FTDI for providing me the programming specs.
29 *
30 * $URL: https://devel.bwct.de/svn/projects/usb/fdti232/eeprom/trunk/ftdi-eeprom.c $
31 * $Date: 2003-02-16 05:02:35 +0100 (Sun, 16 Feb 2003) $
32 * $Author: ticso $
33 * $Rev: 309 $
34 */
35
36 #include <sys/ioctl.h>
37 #include <sys/param.h>
38 #include <sys/types.h>
39 #include <errno.h>
40 #include <fcntl.h>
41 #include <stdio.h>
42 #include <unistd.h>
43 #include <stdlib.h>
44 #include <stdio.h>
45 #include <string.h>
46 #include <limits.h>
47 #ifdef __DragonFly__
48 #include <bus/u4b/usb.h>
49 #include <bus/u4b/usb_ioctl.h>
50 #else
51 #include <dev/usb/usb.h>
52 #include <dev/usb/usb_ioctl.h>
53 #endif
54
55 #include "ftdi-eeprom.h"
56
57 static int fd;
58 static int do_write;
59
60 /*
61 * ftdi-eeprom: programm to write 93c46 EEPROM devices on
62 * FTDI usb chips over usb
63 */
64 int
main(int argc,char * argv[])65 main(int argc, char *argv[])
66 {
67 int ch;
68 static char *devname;
69 static int addr;
70 union {
71 u_int8_t *d8;
72 u_int16_t *d16;
73 } data;
74 int wptr;
75 u_int16_t vendor_id, product_id, release_number;
76 int bus_powered, remote_wakeup;
77 u_int8_t current;
78 char* manufacturer_string;
79 char* product_string;
80 char* serial_string;
81 u_int16_t checksum, tmpsum;
82
83 while ((ch = getopt(argc, argv, "wa:f:")) != -1)
84 switch (ch) {
85 case 'a':
86 addr = strtol(optarg, NULL, 0);
87 break;
88 case 'f':
89 devname = optarg;
90 break;
91 case 'w':
92 do_write = 1;
93 break;
94 default:
95 usage();
96 /* NOTREACHED */
97 }
98 argc -= optind;
99 argv += optind;
100
101 if (devname == NULL) {
102 usage();
103 /* NOTREACHED */
104 }
105
106 fd = open(devname, O_RDWR);
107 if (fd < 0) {
108 fprintf(stderr, "Failed to open device: %s %s\n", devname,
109 strerror(errno));
110 exit(1);
111 }
112
113 data.d8 = (u_int8_t*)malloc(128);
114 if (data.d8 == NULL) {
115 fprintf(stderr, "failed to malloc 128 Bytes\n");
116 exit(1);
117 }
118 bzero(data.d8, 128);
119
120 if (do_write) {
121 if (argc != 9) {
122 free(data.d8);
123 usage();
124 /* NOTREACHED */
125 }
126 vendor_id = strtol(argv[0], NULL, 0);
127 product_id = strtol(argv[1], NULL, 0);
128 release_number = strtol(argv[2], NULL, 0);
129 bus_powered = (strcmp(argv[3], "1") == 0) ? 1 : 0;
130 remote_wakeup = (strcmp(argv[4], "1") == 0) ? 1 : 0;
131 current = strtol(argv[5], NULL, 0) / 2;
132 manufacturer_string = argv[6];
133 product_string = argv[7];
134 serial_string = argv[8];
135 data.d16[0x2/2] = vendor_id;
136 data.d16[0x4/2] = product_id;
137 data.d16[0x6/2] = release_number;
138 data.d8[0x8 ^ END8] = 0x80;
139 data.d8[0x8 ^ END8] |= (bus_powered) ? 0 : 0x40;
140 data.d8[0x8 ^ END8] |= (remote_wakeup) ? 0x20 : 0;
141 data.d8[0x9 ^ END8] = current;
142 wptr = 0x14;
143 data.d8[0xe ^ END8] = wptr + 0x80;
144 data.d8[0xf ^ END8] = strlen(manufacturer_string) * 2 + 2;
145 data.d8[wptr++ ^ END8] = data.d8[0xf ^ END8];
146 data.d8[wptr++ ^ END8] = 0x03;
147 while (*manufacturer_string != '\0') {
148 data.d16[wptr/2] = *(manufacturer_string++);
149 wptr += 2;
150 }
151 data.d8[0x10 ^ END8] = wptr + 0x80;
152 data.d8[0x11 ^ END8] = strlen(product_string) * 2 + 2;
153 data.d8[wptr++ ^ END8] = data.d8[0x11 ^ END8];
154 data.d8[wptr++ ^ END8] = 0x03;
155 while (*product_string != '\0') {
156 data.d16[wptr/2] = *(product_string++);
157 wptr += 2;
158 }
159 data.d8[0x12 ^ END8] = wptr + 0x80;
160 data.d8[0x13 ^ END8] = strlen(serial_string) * 2 + 2;
161 data.d8[wptr++ ^ END8] = data.d8[0x13 ^ END8];
162 data.d8[wptr++ ^ END8] = 0x03;
163 while (*serial_string != '\0') {
164 data.d16[wptr/2] = *(serial_string++);
165 wptr += 2;
166 }
167
168 checksum = 0xaaaa;
169 for (wptr = 0; wptr < 0x3f; wptr++) {
170 writecell(wptr, data.d16[wptr], addr);
171 tmpsum = data.d16[wptr] ^ checksum;
172 checksum = tmpsum << 1;
173 if (tmpsum & 0x8000)
174 checksum |= 0x01;
175 }
176 writecell(wptr, checksum, addr);
177 }
178
179 free(data.d8);
180 close(fd);
181 return 0;
182 }
183
184 int
writecell(int num,u_int16_t val,int addr)185 writecell (int num, u_int16_t val, int addr) {
186 struct usb_ctl_request request;
187 int res;
188
189 request.ucr_addr = addr;
190 request.ucr_request.bmRequestType = 0x40;
191 request.ucr_request.bRequest = 0x91;
192 request.ucr_request.wValue[0] = val & 0xff;
193 request.ucr_request.wValue[1] = val >> 8;
194 request.ucr_request.wIndex[0] = num & 0xff;
195 request.ucr_request.wIndex[1] = num >> 8;
196 request.ucr_request.wLength[0] = 0x00;
197 request.ucr_request.wLength[1] = 0x00;
198 request.ucr_data = NULL;
199 request.ucr_flags = 0;
200 request.ucr_actlen = 0;
201 if (addr)
202 res = ioctl(fd, USB_REQUEST, &request);
203 else
204 res = ioctl(fd, USB_DO_REQUEST, &request);
205 if (res < 0) {
206 fprintf(stderr, "failed to write value %d into cell %d %s\n",
207 val, num, strerror(errno));
208 }
209 return res;
210 }
211
212 void
usage()213 usage()
214 {
215
216 fprintf(stderr, "ftdi-eeprom V1.0\n");
217 fprintf(stderr, "(c) 2002,03 by Bernd Walter Computer Technology\n");
218 fprintf(stderr, "All rights reserved.\n");
219 fprintf(stderr,
220 "usage: ftdi-eeprom -f dev [-a addr] -w vendor_id product_id \\\n"
221 " release_number bus_powered remote_wakeup current \\\n"
222 " manufacturer_string product_string serial_string\n");
223 exit(1);
224 }
225
226