summaryrefslogtreecommitdiffstats
path: root/utils/tcctool/tcctool.c
blob: bda077a4593d1abc6f0bfc3aba495ef90cfe9833 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 * Copyright (C) 2007 Dave Chapman
 *
 * USB code based on ifp-line - http://ifp-driver.sourceforge.net
 *
 * ifp-line is (C) Pavel Kriz, Jun Yamishiro and Joe Roback and
 * licensed under the GPL (v2)
 *
 *
 * All files in this archive are subject to the GNU General Public License.
 * See the file COPYING in the source tree root for full license agreement.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ****************************************************************************/

#include <stdio.h>
#include <inttypes.h>
#include <usb.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>

#define VERSION "0.1"

#define MAX_FIRMWARESIZE   (10*1024*1024)   /* Arbitrary limit (for safety) */

/* For win32 compatibility: */
#ifndef O_BINARY
#define O_BINARY 0
#endif

struct device_t
{
    char* name;
    char* label;
    uint16_t productid;
    uint32_t loadaddr;
    uint32_t sdcfg;
};

static struct device_t devices[] = 
{ 
    {"c100",     "Sansa C100 series",            0xb021, 0x20000000, 0x42e97010 },
    {"cowond2",  "Cowon D2",                     0xb011, 0x20000000, 0xa2e92010 },
    {"iaudio6",  "iAudio 6",                     0xb021, 0x20000000, 0x62e97010 },
    {"iaudio7",  "iAudio 7",                     0xb021, 0x20000000, 0x62e97010 },
    {"logikdax", "Logik DAX 1GB DAB/MP3 player", 0xb021, 0x20000000, 0x52e97410 }
};

#define NUM_DEVICES ((sizeof(devices) / sizeof(struct device_t)))

int find_device(char* devname)
{
    unsigned int i = 0;

    while ((i < NUM_DEVICES) && (strcmp(devices[i].name,devname)))
        i++;

    if (i==NUM_DEVICES)
        return -1;
    else
        return i;
}

void print_devices(void)
{
    unsigned int i;

    printf("Valid devices are:\n");
    for (i=0; i<NUM_DEVICES; i++)
    {
        printf("  %10s - %s\n",devices[i].name,devices[i].label);
    }
}

/* USB IDs for USB Boot Mode */
#define TCC_VENDORID    0x140e

#define TCC_BULK_TO       1
#define TOUT              5000
#define PACKET_SIZE       64  /* Number of bytes to send in one write */

#ifndef MAX
#define MAX(a,b) (((a)>(b))?(a):(b))
#endif

static void put_int32le(uint32_t x, char* p)
{
    p[0] = x & 0xff;
    p[1] = (x >> 8) & 0xff;
    p[2] = (x >> 16) & 0xff;
    p[3] = (x >> 24) & 0xff;
}

int upload_app(usb_dev_handle* dh, int device, char* p, int len)
{
    char buf[PACKET_SIZE];
    int err;
    int i;

    /* Send the header - Destination address, length and SDCFG value */
    memset(buf, 0, PACKET_SIZE);

    put_int32le(0xf0000000, buf);   /* Unknown - always the same */
    put_int32le(len / PACKET_SIZE, buf + 4);
    put_int32le(devices[device].loadaddr, buf + 8);
    put_int32le(devices[device].sdcfg, buf + 12);

    err = usb_bulk_write(dh, TCC_BULK_TO, buf, PACKET_SIZE, TOUT);

    if (err < 0)
    {
        fprintf(stderr,"[ERR]  Error writing header\n");
        fprintf(stderr,"[ERR]  Bulk write error (%d, %s)\n", err, strerror(-err));
        return -1;
    }

    /* Now send the data, PACKET_SIZE bytes at a time. */

    for (i=0 ; i < (len / PACKET_SIZE) ; i++)
    {
        err = usb_bulk_write(dh, TCC_BULK_TO, p, PACKET_SIZE, TOUT);

        if (err < 0)
        {
            fprintf(stderr,"[ERR]  Error writing data\n");
            fprintf(stderr,"[ERR]  Bulk write error (%d, %s)\n", err, strerror(-err));
            return -1;
        }

        p += PACKET_SIZE;
    }

    return 0;
}


/* The main function */

void do_patching(int device, char* buf, int len)
{
    struct usb_bus *busses;
    struct usb_bus *bus;
    struct usb_device *tmp_dev;
    struct usb_device *dev = NULL;
    usb_dev_handle *dh;
    int err;

    fprintf(stderr,"[INFO] Searching for TCC device...\n");
 
    usb_init();
    if(usb_find_busses() < 0) {
        fprintf(stderr, "[ERR]  Could not find any USB busses.\n");
        return;
    }

    if (usb_find_devices() < 0) {
        fprintf(stderr, "[ERR]  USB devices not found(nor hubs!).\n");
        return;
    }

    /* C calling convention, it's not nice to use global stuff */
    busses = usb_get_busses();

    for (bus = busses; bus; bus = bus->next) {
        for (tmp_dev = bus->devices; tmp_dev; tmp_dev = tmp_dev->next) {
            //printf("Found Vendor %04x Product %04x\n",tmp_dev->descriptor.idVendor, tmp_dev->descriptor.idProduct);
            if (tmp_dev->descriptor.idVendor == TCC_VENDORID &&
                tmp_dev->descriptor.idProduct == devices[device].productid) {

                dev = tmp_dev;
                goto found;

            }
        }
    }

    if (dev == NULL) {
        fprintf(stderr, "[ERR]  TCC device not found.\n");
        fprintf(stderr, "[ERR]  Ensure your TCC device is in USB boot mode and run tcctool again.\n");
        return;
    }

found:
    if ( (dh = usb_open(dev)) == NULL) {
        fprintf(stderr,"[ERR]  Unable to open TCC device.\n");
        return;
    }

    err = usb_set_configuration(dh, 1);

    if (err < 0)  {
        fprintf(stderr, "[ERR]  usb_set_configuration failed (%d)\n", err);
        usb_close(dh);
        return;
    }

    /* "must be called" written in the libusb documentation */
    err = usb_claim_interface(dh, dev->config->interface->altsetting->bInterfaceNumber);
    if (err < 0) {
        fprintf(stderr, "[ERR]  Unable to claim interface (%d)\n", err);
        usb_close(dh);
        return;
    }

    fprintf(stderr,"[INFO] Found TCC device, uploading application.\n");

    /* Now we can transfer the application to the device. */ 

    if (upload_app(dh, device, buf, len) < 0)
    {
        fprintf(stderr,"[ERR]  Upload of application failed.\n");
    }
    else
    {
        fprintf(stderr,"[INFO] Patching application uploaded successfully!\n");
    }

    /* release claimed interface */
    usb_release_interface(dh, dev->config->interface->altsetting->bInterfaceNumber);

    usb_close(dh);
}

off_t filesize(int fd) {
    struct stat buf;

    if (fstat(fd,&buf) < 0) {
        perror("[ERR]  Checking filesize of input file");
        return -1;
    } else {
        return(buf.st_size);
    }
}

void print_usage(void)
{
    printf("Usage: tcctool -d devicename firmware.bin\n");
}

int main(int argc, char* argv[])
{
    char* buf;
    int n,len;
    int fd;
    int device;

    printf("tcctool v" VERSION " - (C) 2007 Dave Chapman\n");
    printf("This is free software; see the source for copying conditions.  There is NO\n");
    printf("warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n");

    if (argc != 4)
    {
        print_usage();
        print_devices();
        return 1;
    }

    if (strcmp(argv[1],"-d"))
    {
        print_usage();
        print_devices();
        return 2;
    }

    device = find_device(argv[2]);

    if (device < 0)
    {
        printf("[ERR]  Unknown device \"%s\"\n",argv[2]);
        print_devices();
        return 3;
    }

    printf("[INFO] Using device \"%s\"\n",devices[device].label);
    fd = open(argv[3], O_RDONLY|O_BINARY);
    if (fd < 0)
    {
        printf("[ERR]  Could not open %s\n", argv[3]);
        return 4;
    }

    len = filesize(fd);

    if (len > MAX_FIRMWARESIZE)
    {
        printf("[ERR]  Firmware file too big\n");
        close(fd);
        return 5;
    }

    buf = malloc(len);
    if (buf == NULL)
    {
        printf("[ERR]  Could not allocate memory.\n");
        close(fd);
        return 6;
    }
    
    n = read(fd, buf, len);
    if (n != len)
    {
        printf("[ERR]  Short read.\n");
        close(fd);
        return 7;
    }
    close(fd);

    do_patching(device, buf, len);

    return 0;
}