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/***************************************************************************
* __________ __ ___.
* 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 "stdbool.h"
#include "bootimg.h"
#define VERSION "0.1-svn"
/* USB IDs for Manufacturing Mode */
#define E200R_VENDORID 0x0781
#define E200R_PRODUCTID 0x0720
#define E200R_BULK_TO 1
#define TOUT 5000
#define MAX_TRANSFER 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)
{
char buf[4];
int err;
int tosend;
char* p = (char*)bootimg;
int bytesleft = LEN_bootimg;
/* Write the data length */
put_int32le(LEN_bootimg, buf);
err = usb_bulk_write(dh, E200R_BULK_TO, buf, 4, TOUT);
if (err < 0)
{
fprintf(stderr,"[ERR] Error writing data length\n");
fprintf(stderr,"[ERR] Bulk write error (%d, %s)\n", err, strerror(-err));
return -1;
}
/* Now send the data, MAX_TRANSFER bytes at a time. */
while (bytesleft > 0)
{
tosend = MAX(MAX_TRANSFER, bytesleft);
err = usb_bulk_write(dh, E200R_BULK_TO, p, tosend, 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 += tosend;
bytesleft -= tosend;
}
return 0;
}
/* The main function */
void do_patching(void)
{
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 E200R\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) {
if (tmp_dev->descriptor.idVendor == E200R_VENDORID &&
tmp_dev->descriptor.idProduct == E200R_PRODUCTID ) {
dev = tmp_dev;
goto found;
}
}
}
if (dev == NULL) {
fprintf(stderr, "[ERR] E200R device not found.\n");
fprintf(stderr, "[ERR] Ensure your E200R is in manufacturing mode and run e200rpatcher again.\n");
return;
}
found:
if ( (dh = usb_open(dev)) == NULL) {
fprintf(stderr,"[ERR] Unable to open E200R 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 E200R, uploading patching application.\n");
/* Now we can transfer the application to the device. */
if (upload_app(dh) < 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);
}
void print_usage(void)
{
fprintf(stderr,"Usage: e200rpatcher [options]\n");
fprintf(stderr,"Options:\n");
fprintf(stderr," -s, --silent\t\tDont display instructions\n");
}
int main(int argc, char* argv[])
{
char input[4];
int silent = 0;
int i;
/* check args */
if ((argc > 1) && ((strcmp(argv[1],"-h")==0) || (strcmp(argv[1],"--help")==0))) {
print_usage();
return 1;
}
for (i=1;i<argc;i++)
{
if (!strcmp(argv[i], "--silent") || !strcmp(argv[i], "-s"))
silent = 1;
}
printf("e200rpatcher v" VERSION " - (C) 2007 Jonathan Gordon & 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 (!silent)
{
printf("Attach your E200R in \"manufacturing mode\" as follows:\n");
printf(" 1) Power-off your E200R\n");
printf(" 2) Turn ON the lock/hold switch\n");
printf(" 3) Press and hold the SELECT button and whilst it is held down,\n");
printf(" attach your E200R to your computer via USB\n");
printf(" 4) After attaching to USB, keep the SELECT button held for 10 seconds.\n");
printf("\n");
printf("NOTE: If your E200R starts in the normal Sansa firmware, you have\n");
printf(" failed to enter manufacturing mode and should try again at step 1).\n\n");
printf("[INFO] Press Enter to continue:");
fgets(input, 4, stdin);
}
do_patching();
if (!silent)
{
printf("[INFO] Press ENTER to exit: ");
fgets(input, 4, stdin);
}
return 0;
}
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