/*

 * Copyright © 2001 Stephen Williams (steve@icarus.com)

 * Copyright © 2001-2002 David Brownell (dbrownell@users.sourceforge.net)

 * Copyright © 2008 Roger Williams (rawqux@users.sourceforge.net)

 * Copyright © 2012 Pete Batard (pete@akeo.ie)

 * Copyright © 2013 Federico Manzan (f.manzan@gmail.com)

 *

 *    This source code is free software; you can redistribute it

 *    and/or modify it in source code form 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA

 */

#include <stdlib.h>

#include <stdio.h>

#include <string.h>

#include <stdint.h>

#include <stdarg.h>

#include <sys/types.h>

#include <getopt.h>

#include "libusb.h"

#include "ezusb.h"

#if !defined(_WIN32) || defined(__CYGWIN__ )

#include <syslog.h>

static bool dosyslog = false;

#include <strings.h>

#define _stricmp strcasecmp

#endif

#ifndef FXLOAD_VERSION

#define FXLOAD_VERSION (__DATE__ " (libusb)")

#endif

#ifndef ARRAYSIZE

#define ARRAYSIZE(A) (sizeof(A)/sizeof((A)[0]))

#endif

void logerror(const char *format, ...)

	__attribute__ ((format (__printf__, 1, 2)));

void logerror(const char *format, ...)

{

	va_list ap;

	va_start(ap, format);

#if !defined(_WIN32) || defined(__CYGWIN__ )

	if (dosyslog)

		vsyslog(LOG_ERR, format, ap);

	else

#endif

		vfprintf(stderr, format, ap);

	va_end(ap);

}

static int print_usage(int error_code) {

	fprintf(stderr, "\nUsage: fxload [-v] [-V] [-t type] [-d vid:pid] [-p bus,addr] [-s loader] -i firmware\n");

	fprintf(stderr, "  -i <path>       -- Firmware to upload\n");

	fprintf(stderr, "  -s <path>       -- Second stage loader\n");

	fprintf(stderr, "  -t <type>       -- Target type: an21, fx, fx2, fx2lp, fx3\n");

	fprintf(stderr, "  -d <vid:pid>    -- Target device, as an USB VID:PID\n");

	fprintf(stderr, "  -p <bus,addr>   -- Target device, as a libusb bus number and device address path\n");

	fprintf(stderr, "  -v              -- Increase verbosity\n");

	fprintf(stderr, "  -q              -- Decrease verbosity (silent mode)\n");

	fprintf(stderr, "  -V              -- Print program version\n");

	return error_code;

}

#define FIRMWARE 0

#define LOADER 1

int main(int argc, char*argv[])

{

	fx_known_device known_device[] = FX_KNOWN_DEVICES;

	const char *path[] = { NULL, NULL };

	const char *device_id = NULL;

	const char *device_path = getenv("DEVICE");

	const char *type = NULL;

	const char *fx_name[FX_TYPE_MAX] = FX_TYPE_NAMES;

	const char *ext, *img_name[] = IMG_TYPE_NAMES;

	int fx_type = FX_TYPE_UNDEFINED, img_type[ARRAYSIZE(path)];

	int opt, status;

	unsigned int i, j;

	unsigned vid = 0, pid = 0;

	unsigned busnum = 0, devaddr = 0, _busnum, _devaddr;

	libusb_device *dev, **devs;

	libusb_device_handle *device = NULL;

	struct libusb_device_descriptor desc;

	while ((opt = getopt(argc, argv, "qvV?hd:p:i:I:s:S:t:")) != EOF)

		switch (opt) {

		case 'd':

			device_id = optarg;

			if (sscanf(device_id, "%x:%x" , &vid, &pid) != 2 ) {

				fputs ("please specify VID & PID as \"vid:pid\" in hexadecimal format\n", stderr);

				return -1;

			}

			break;

		case 'p':

			device_path = optarg;

			if (sscanf(device_path, "%u,%u", &busnum, &devaddr) != 2 ) {

				fputs ("please specify bus number & device number as \"bus,dev\" in decimal format\n", stderr);

				return -1;

			}

			break;

		case 'i':

		case 'I':

			path[FIRMWARE] = optarg;

			break;

		case 's':

		case 'S':

			path[LOADER] = optarg;

			break;

		case 'V':

			puts(FXLOAD_VERSION);

			return 0;

		case 't':

			type = optarg;

			break;

		case 'v':

			verbose++;

			break;

		case 'q':

			verbose--;

			break;

		case '?':

		case 'h':

		default:

			return print_usage(-1);

	}

	if (path[FIRMWARE] == NULL) {

		logerror("no firmware specified!\n");

		return print_usage(-1);

	}

	if ((device_id != NULL) && (device_path != NULL)) {

		logerror("only one of -d or -p can be specified\n");

		return print_usage(-1);

	}

	/* determine the target type */

	if (type != NULL) {

		for (i=0; i

			if (strcmp(type, fx_name[i]) == 0) {

				fx_type = i;

				break;

			}

		}

		if (i >= FX_TYPE_MAX) {

			logerror("illegal microcontroller type: %s\n", type);

			return print_usage(-1);

		}

	}

	/* open the device using libusb */

	status = libusb_init(NULL);

	if (status < 0) {

		logerror("libusb_init() failed: %s\n", libusb_error_name(status));

		return -1;

	}

	libusb_set_option(NULL, LIBUSB_OPTION_LOG_LEVEL, verbose);

	/* try to pick up missing parameters from known devices */

	if ((type == NULL) || (device_id == NULL) || (device_path != NULL)) {

		if (libusb_get_device_list(NULL, &devs) < 0) {

			logerror("libusb_get_device_list() failed: %s\n", libusb_error_name(status));

			goto err;

		}

		for (i=0; (dev=devs[i]) != NULL; i++) {

			_busnum = libusb_get_bus_number(dev);

			_devaddr = libusb_get_device_address(dev);

			if ((type != NULL) && (device_path != NULL)) {

				// if both a type and bus,addr were specified, we just need to find our match

				if ((libusb_get_bus_number(dev) == busnum) && (libusb_get_device_address(dev) == devaddr))

					break;

			} else {

				status = libusb_get_device_descriptor(dev, &desc);

				if (status >= 0) {

					if (verbose >= 3) {

						logerror("examining %04x:%04x (%d,%d)\n",

							desc.idVendor, desc.idProduct, _busnum, _devaddr);

					}

					for (j=0; j

						if ((desc.idVendor == known_device[j].vid)

							&& (desc.idProduct == known_device[j].pid)) {

							if (// nothing was specified

								((type == NULL) && (device_id == NULL) && (device_path == NULL)) ||

								// vid:pid was specified and we have a match

								((type == NULL) && (device_id != NULL) && (vid == desc.idVendor) && (pid == desc.idProduct)) ||

								// bus,addr was specified and we have a match

								((type == NULL) && (device_path != NULL) && (busnum == _busnum) && (devaddr == _devaddr)) ||

								// type was specified and we have a match

								((type != NULL) && (device_id == NULL) && (device_path == NULL) && (fx_type == known_device[j].type)) ) {

								fx_type = known_device[j].type;

								vid = desc.idVendor;

								pid = desc.idProduct;

								busnum = _busnum;

								devaddr = _devaddr;

								break;

							}

						}

					}

					if (j < ARRAYSIZE(known_device)) {

						if (verbose)

							logerror("found device '%s' [%04x:%04x] (%d,%d)\n",

								known_device[j].designation, vid, pid, busnum, devaddr);

						break;

					}

				}

			}

		}

		if (dev == NULL) {

			libusb_free_device_list(devs, 1);

			libusb_exit(NULL);

			logerror("could not find a known device - please specify type and/or vid:pid and/or bus,dev\n");

			return print_usage(-1);

		}

		status = libusb_open(dev, &device);

		libusb_free_device_list(devs, 1);

		if (status < 0) {

			logerror("libusb_open() failed: %s\n", libusb_error_name(status));

			goto err;

		}

	} else if (device_id != NULL) {

		device = libusb_open_device_with_vid_pid(NULL, (uint16_t)vid, (uint16_t)pid);

		if (device == NULL) {

			logerror("libusb_open() failed\n");

			goto err;

		}

	}

	/* We need to claim the first interface */

	libusb_set_auto_detach_kernel_driver(device, 1);

	status = libusb_claim_interface(device, 0);

	if (status != LIBUSB_SUCCESS) {

		libusb_close(device);

		logerror("libusb_claim_interface failed: %s\n", libusb_error_name(status));

		goto err;

	}

	if (verbose)

		logerror("microcontroller type: %s\n", fx_name[fx_type]);

	for (i=0; i

		if (path[i] != NULL) {

			ext = path[i] + strlen(path[i]) - 4;

			if ((_stricmp(ext, ".hex") == 0) || (strcmp(ext, ".ihx") == 0))

				img_type[i] = IMG_TYPE_HEX;

			else if (_stricmp(ext, ".iic") == 0)

				img_type[i] = IMG_TYPE_IIC;

			else if (_stricmp(ext, ".bix") == 0)

				img_type[i] = IMG_TYPE_BIX;

			else if (_stricmp(ext, ".img") == 0)

				img_type[i] = IMG_TYPE_IMG;

			else {

				logerror("%s is not a recognized image type\n", path[i]);

				goto err;

			}

		}

		if (verbose && path[i] != NULL)

			logerror("%s: type %s\n", path[i], img_name[img_type[i]]);

	}

	if (path[LOADER] == NULL) {

		/* single stage, put into internal memory */

		if (verbose > 1)

			logerror("single stage: load on-chip memory\n");

		status = ezusb_load_ram(device, path[FIRMWARE], fx_type, img_type[FIRMWARE], 0);

	} else {

		/* two-stage, put loader into internal memory */

		if (verbose > 1)

			logerror("1st stage: load 2nd stage loader\n");

		status = ezusb_load_ram(device, path[LOADER], fx_type, img_type[LOADER], 0);

		if (status == 0) {

			/* two-stage, put firmware into internal memory */

			if (verbose > 1)

				logerror("2nd state: load on-chip memory\n");

			status = ezusb_load_ram(device, path[FIRMWARE], fx_type, img_type[FIRMWARE], 1);

		}

	}

	libusb_release_interface(device, 0);

	libusb_close(device);

	libusb_exit(NULL);

	return status;

err:

	libusb_exit(NULL);

	return -1;

}