[hmcfgusb] / flash-hmcfgusb.c

/* flasher for HM-CFG-USB
 *
 * Copyright (c) 2013 Michael Gernoth <michael@gernoth.net>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdint.h>
#include <string.h>
#include <strings.h>
#include <poll.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/time.h>
#include <libusb-1.0/libusb.h>

#include "hexdump.h"
#include "version.h"
#include "hmcfgusb.h"

/* This might be wrong, but it works for current fw */
#define MAX_BLOCK_LENGTH	512

struct recv_data {
	int ack;
};

static int parse_hmcfgusb(uint8_t *buf, int buf_len, void *data)
{
	struct recv_data *rdata = data;

	if (buf_len != 1)
		return 1;

	rdata->ack = buf[0];

	return 1;
}

static uint8_t ascii_to_nibble(uint8_t a)
{
	uint8_t c = 0x00;

	if ((a >= '0') && (a <= '9')) {
		c = a - '0';
	} else if ((a >= 'A') && (a <= 'F')) {
		c = (a - 'A') + 10;
	} else if ((a >= 'a') && (a <= 'f')) {
		c = (a - 'a') + 10;
	}

	return c;
}

static int validate_nibble(uint8_t a)
{
	if (((a >= '0') && (a <= '9')) ||
	    ((a >= 'A') && (a <= 'F')) ||
	    ((a >= 'a') && (a <= 'f')))
	    	return 1;

	return 0;
}

int main(int argc, char **argv)
{
	const char twiddlie[] = { '-', '\\', '|', '/' };
	struct hmcfgusb_dev *dev;
	struct recv_data rdata;
	struct stat stat_buf;
	uint8_t buf[4096];
	uint16_t len;
	uint8_t **fw = NULL;
	int fw_blocks = 0;
	int block;
	int fd;
	int pfd;
	int r;
	int i;
	int debug = 0;

	printf("HM-CFG-USB flasher version " VERSION "\n\n");

	if (argc != 2) {
		if (argc == 1)
			fprintf(stderr, "Missing firmware filename!\n\n");

		fprintf(stderr, "Syntax: %s hmusbif.enc\n\n", argv[0]);
		exit(EXIT_FAILURE);
	}

	if (stat(argv[1], &stat_buf) == -1) {
		fprintf(stderr, "Can't stat %s: %s\n", argv[1], strerror(errno));
		exit(EXIT_FAILURE);
	}

	fd = open(argv[1], O_RDONLY);
	if (fd < 0) {
		fprintf(stderr, "Can't open %s: %s", argv[1], strerror(errno));
		exit(EXIT_FAILURE);
	}

	printf("Reading firmware from %s...\n", argv[1]);
	do {
		memset(buf, 0, sizeof(buf));
		r = read(fd, buf, 4);
		if (r < 0) {
			perror("read");
			exit(EXIT_FAILURE);
		} else if (r == 0) {
			break;
		} else if (r != 4) {
			printf("can't get length information!\n");
			exit(EXIT_FAILURE);
		}

		for (i = 0; i < r; i++) {
			if (!validate_nibble(buf[i])) {
				fprintf(stderr, "Firmware file not valid!\n");
				exit(EXIT_FAILURE);
			}
		}

		len = (ascii_to_nibble(buf[0]) & 0xf)<< 4;
		len |= ascii_to_nibble(buf[1]) & 0xf;
		len <<= 8;
		len |= (ascii_to_nibble(buf[2]) & 0xf)<< 4;
		len |= ascii_to_nibble(buf[3]) & 0xf;

		/* This might be wrong, but it works for current fw */
		if (len > MAX_BLOCK_LENGTH) {
			fprintf(stderr, "Invalid block-length %u > %u for block %d!\n", len, MAX_BLOCK_LENGTH, fw_blocks+1);
			exit(EXIT_FAILURE);
		}

		fw = realloc(fw, sizeof(uint8_t*) * (fw_blocks + 1));
		if (fw == NULL) {
			perror("Can't reallocate fw-blocklist");
			exit(EXIT_FAILURE);
		}

		fw[fw_blocks] = malloc(len + 4);
		if (fw[fw_blocks] == NULL) {
			perror("Can't allocate memory for fw-block");
			exit(EXIT_FAILURE);
		}

		fw[fw_blocks][0] = (fw_blocks >> 8) & 0xff;
		fw[fw_blocks][1] = fw_blocks & 0xff;
		fw[fw_blocks][2] = (len >> 8) & 0xff;
		fw[fw_blocks][3] = len & 0xff;

		r = read(fd, buf, len * 2);
		if (r < 0) {
			perror("read");
			exit(EXIT_FAILURE);
		} else if (r < len * 2) {
			fprintf(stderr, "short read, aborting (%d < %d)\n", r, len * 2);
			exit(EXIT_FAILURE);
		}

		for (i = 0; i < r; i+=2) {
			if ((!validate_nibble(buf[i])) ||
			    (!validate_nibble(buf[i+1]))) {
				fprintf(stderr, "Firmware file not valid!\n");
				exit(EXIT_FAILURE);
			}

			fw[fw_blocks][(i/2) + 4] = (ascii_to_nibble(buf[i]) & 0xf)<< 4;
			fw[fw_blocks][(i/2) + 4] |= ascii_to_nibble(buf[i+1]) & 0xf;
		}

		fw_blocks++;
		if (debug)
			printf("Firmware block %d with length %u read.\n", fw_blocks, len);
	} while(r > 0);

	if (fw_blocks == 0) {
		fprintf(stderr, "Firmware file not valid!\n");
		exit(EXIT_FAILURE);
	}

	printf("Firmware with %d blocks successfully read.\n", fw_blocks);

	hmcfgusb_set_debug(debug);

	memset(&rdata, 0, sizeof(rdata));

	dev = hmcfgusb_init(parse_hmcfgusb, &rdata);
	if (!dev) {
		fprintf(stderr, "Can't initialize HM-CFG-USB\n");
		exit(EXIT_FAILURE);
	}

	if (!dev->bootloader) {
		fprintf(stderr, "\nHM-CFG-USB not in bootloader mode, entering bootloader.\n");
		hmcfgusb_enter_bootloader(dev);
		fprintf(stderr, "\nWaiting for device to reappear...\n");

		do {
			sleep(1);
		} while ((dev = hmcfgusb_init(parse_hmcfgusb, &rdata)) == NULL);

		if (!dev->bootloader) {
			fprintf(stderr, "Can't enter bootloader, giving up!\n");
			exit(EXIT_FAILURE);
		}
	}

	printf("\nHM-CFG-USB opened.\n\n");


	printf("Flashing %d blocks", fw_blocks);
	if (debug) {
		printf("\n");
	} else {
		printf(": %c", twiddlie[0]);
		fflush(stdout);
	}

	for (block = 0; block < fw_blocks; block++) {
		len = fw[block][2] << 8;
		len |= fw[block][3];

		len += 4; /* block nr., length */

		if (debug)
			hexdump(fw[block], len, "F> ");

		rdata.ack = 0;
		if (!hmcfgusb_send(dev, fw[block], len, 0)) {
			perror("\n\nhmcfgusb_send");
			exit(EXIT_FAILURE);
		}

		if (debug)
			printf("Waiting for ack...\n");
		do {
			errno = 0;
			pfd = hmcfgusb_poll(dev, 1);
			if ((pfd < 0) && errno) {
				perror("\n\nhmcfgusb_poll");
				exit(EXIT_FAILURE);
			}
			if (rdata.ack) {
				break;
			}
		} while (pfd < 0);

		if (rdata.ack == 2) {
			printf("\n\nFirmware update successfull!\n");
			break;
		}

		if (rdata.ack != 1) {
			fprintf(stderr, "\n\nError flashing block %d, status: %u\n", block, rdata.ack);
			exit(EXIT_FAILURE);
		}

		if (!debug) {
			printf("\b%c", twiddlie[block % sizeof(twiddlie)]);
			fflush(stdout);
		}
		free(fw[block]);
	}

	free(fw);

	hmcfgusb_close(dev);

	return EXIT_SUCCESS;
}
Commit	Line	Data
19cb9745	1	/* flasher for HM-CFG-USB
9fb0f4d2 MG	2	*
	3	* Copyright (c) 2013 Michael Gernoth <michael@gernoth.net>
	4	*
	5	* Permission is hereby granted, free of charge, to any person obtaining a copy
	6	* of this software and associated documentation files (the "Software"), to
	7	* deal in the Software without restriction, including without limitation the
	8	* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
	9	* sell copies of the Software, and to permit persons to whom the Software is
	10	* furnished to do so, subject to the following conditions:
	11	*
	12	* The above copyright notice and this permission notice shall be included in
	13	* all copies or substantial portions of the Software.
	14	*
	15	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	16	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	17	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	18	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	19	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	20	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
	21	* IN THE SOFTWARE.
	22	*/
	23
	24	#include <stdio.h>
	25	#include <stdlib.h>
	26	#include <unistd.h>
	27	#include <stdint.h>
	28	#include <string.h>
	29	#include <strings.h>
	30	#include <poll.h>
	31	#include <errno.h>
	32	#include <sys/types.h>
	33	#include <sys/stat.h>
	34	#include <fcntl.h>
	35	#include <sys/time.h>
	36	#include <libusb-1.0/libusb.h>
	37
	38	#include "hexdump.h"
19cb9745	39	#include "version.h"
9fb0f4d2 MG	40	#include "hmcfgusb.h"
9fb0f4d2 MG	41
19cb9745 MG	42	/* This might be wrong, but it works for current fw */
	43	#define MAX_BLOCK_LENGTH 512
	44
9fb0f4d2	45	struct recv_data {
b5e57d26	46	int ack;
9fb0f4d2 MG	47	};
	48
	49	static int parse_hmcfgusb(uint8_t buf, int buf_len, void data)
	50	{
b5e57d26 MG	51	struct recv_data *rdata = data;
	52
	53	if (buf_len != 1)
9fb0f4d2 MG	54	return 1;
9fb0f4d2 MG	55
b5e57d26	56	rdata->ack = buf[0];
9fb0f4d2 MG	57
	58	return 1;
	59	}
	60
	61	static uint8_t ascii_to_nibble(uint8_t a)
	62	{
	63	uint8_t c = 0x00;
	64
	65	if ((a >= '0') && (a <= '9')) {
	66	c = a - '0';
	67	} else if ((a >= 'A') && (a <= 'F')) {
	68	c = (a - 'A') + 10;
	69	} else if ((a >= 'a') && (a <= 'f')) {
	70	c = (a - 'a') + 10;
	71	}
	72
	73	return c;
	74	}
	75
19cb9745 MG	76	static int validate_nibble(uint8_t a)
	77	{
	78	if (((a >= '0') && (a <= '9')) \|\|
	79	((a >= 'A') && (a <= 'F')) \|\|
	80	((a >= 'a') && (a <= 'f')))
	81	return 1;
	82
	83	return 0;
	84	}
	85
9fb0f4d2 MG	86	int main(int argc, char **argv)
9fb0f4d2 MG	87	{
19cb9745	88	const char twiddlie[] = { '-', '\\', '\|', '/' };
9fb0f4d2 MG	89	struct hmcfgusb_dev *dev;
9fb0f4d2 MG	90	struct recv_data rdata;
19cb9745	91	struct stat stat_buf;
04e76de6	92	uint8_t buf[4096];
19cb9745 MG	93	uint16_t len;
	94	uint8_t **fw = NULL;
	95	int fw_blocks = 0;
	96	int block;
9fb0f4d2	97	int fd;
b5e57d26	98	int pfd;
9fb0f4d2 MG	99	int r;
9fb0f4d2 MG	100	int i;
b5e57d26	101	int debug = 0;
9fb0f4d2	102
19cb9745	103	printf("HM-CFG-USB flasher version " VERSION "\n\n");
9fb0f4d2	104
19cb9745 MG	105	if (argc != 2) {
	106	if (argc == 1)
	107	fprintf(stderr, "Missing firmware filename!\n\n");
9fb0f4d2	108
19cb9745	109	fprintf(stderr, "Syntax: %s hmusbif.enc\n\n", argv[0]);
b5e57d26 MG	110	exit(EXIT_FAILURE);
	111	}
	112
19cb9745 MG	113	if (stat(argv[1], &stat_buf) == -1) {
19cb9745 MG	114	fprintf(stderr, "Can't stat %s: %s\n", argv[1], strerror(errno));
9fb0f4d2 MG	115	exit(EXIT_FAILURE);
9fb0f4d2 MG	116	}
9fb0f4d2	117
19cb9745 MG	118	fd = open(argv[1], O_RDONLY);
	119	if (fd < 0) {
	120	fprintf(stderr, "Can't open %s: %s", argv[1], strerror(errno));
	121	exit(EXIT_FAILURE);
9fb0f4d2 MG	122	}
9fb0f4d2 MG	123
19cb9745	124	printf("Reading firmware from %s...\n", argv[1]);
9fb0f4d2 MG	125	do {
9fb0f4d2 MG	126	memset(buf, 0, sizeof(buf));
04e76de6	127	r = read(fd, buf, 4);
9fb0f4d2 MG	128	if (r < 0) {
	129	perror("read");
	130	exit(EXIT_FAILURE);
	131	} else if (r == 0) {
	132	break;
04e76de6 MG	133	} else if (r != 4) {
	134	printf("can't get length information!\n");
	135	exit(EXIT_FAILURE);
9fb0f4d2	136	}
04e76de6	137
19cb9745 MG	138	for (i = 0; i < r; i++) {
	139	if (!validate_nibble(buf[i])) {
	140	fprintf(stderr, "Firmware file not valid!\n");
	141	exit(EXIT_FAILURE);
	142	}
	143	}
	144
04e76de6 MG	145	len = (ascii_to_nibble(buf[0]) & 0xf)<< 4;
	146	len \|= ascii_to_nibble(buf[1]) & 0xf;
	147	len <<= 8;
	148	len \|= (ascii_to_nibble(buf[2]) & 0xf)<< 4;
	149	len \|= ascii_to_nibble(buf[3]) & 0xf;
	150
19cb9745 MG	151	/* This might be wrong, but it works for current fw */
	152	if (len > MAX_BLOCK_LENGTH) {
	153	fprintf(stderr, "Invalid block-length %u > %u for block %d!\n", len, MAX_BLOCK_LENGTH, fw_blocks+1);
	154	exit(EXIT_FAILURE);
	155	}
	156
	157	fw = realloc(fw, sizeof(uint8_t) (fw_blocks + 1));
	158	if (fw == NULL) {
	159	perror("Can't reallocate fw-blocklist");
	160	exit(EXIT_FAILURE);
	161	}
	162
	163	fw[fw_blocks] = malloc(len + 4);
	164	if (fw[fw_blocks] == NULL) {
	165	perror("Can't allocate memory for fw-block");
	166	exit(EXIT_FAILURE);
	167	}
	168
	169	fw[fw_blocks][0] = (fw_blocks >> 8) & 0xff;
	170	fw[fw_blocks][1] = fw_blocks & 0xff;
	171	fw[fw_blocks][2] = (len >> 8) & 0xff;
	172	fw[fw_blocks][3] = len & 0xff;
	173
04e76de6 MG	174	r = read(fd, buf, len * 2);
	175	if (r < 0) {
	176	perror("read");
	177	exit(EXIT_FAILURE);
	178	} else if (r < len * 2) {
19cb9745 MG	179	fprintf(stderr, "short read, aborting (%d < %d)\n", r, len * 2);
19cb9745 MG	180	exit(EXIT_FAILURE);
04e76de6 MG	181	}
04e76de6 MG	182
9fb0f4d2	183	for (i = 0; i < r; i+=2) {
19cb9745 MG	184	if ((!validate_nibble(buf[i])) \|\|
	185	(!validate_nibble(buf[i+1]))) {
	186	fprintf(stderr, "Firmware file not valid!\n");
	187	exit(EXIT_FAILURE);
	188	}
	189
	190	fw[fw_blocks][(i/2) + 4] = (ascii_to_nibble(buf[i]) & 0xf)<< 4;
	191	fw[fw_blocks][(i/2) + 4] \|= ascii_to_nibble(buf[i+1]) & 0xf;
9fb0f4d2	192	}
19cb9745 MG	193
19cb9745 MG	194	fw_blocks++;
b5e57d26	195	if (debug)
19cb9745 MG	196	printf("Firmware block %d with length %u read.\n", fw_blocks, len);
	197	} while(r > 0);
	198
	199	if (fw_blocks == 0) {
	200	fprintf(stderr, "Firmware file not valid!\n");
	201	exit(EXIT_FAILURE);
	202	}
	203
	204	printf("Firmware with %d blocks successfully read.\n", fw_blocks);
	205
	206	hmcfgusb_set_debug(debug);
	207
	208	memset(&rdata, 0, sizeof(rdata));
	209
	210	dev = hmcfgusb_init(parse_hmcfgusb, &rdata);
	211	if (!dev) {
	212	fprintf(stderr, "Can't initialize HM-CFG-USB\n");
	213	exit(EXIT_FAILURE);
	214	}
	215
	216	if (!dev->bootloader) {
	217	fprintf(stderr, "\nHM-CFG-USB not in bootloader mode, entering bootloader.\n");
	218	hmcfgusb_enter_bootloader(dev);
	219	fprintf(stderr, "\nWaiting for device to reappear...\n");
	220
	221	do {
	222	sleep(1);
	223	} while ((dev = hmcfgusb_init(parse_hmcfgusb, &rdata)) == NULL);
	224
	225	if (!dev->bootloader) {
	226	fprintf(stderr, "Can't enter bootloader, giving up!\n");
	227	exit(EXIT_FAILURE);
	228	}
	229	}
	230
	231	printf("\nHM-CFG-USB opened.\n\n");
	232
	233
2cbaa810	234	printf("Flashing %d blocks", fw_blocks);
19cb9745 MG	235	if (debug) {
	236	printf("\n");
	237	} else {
	238	printf(": %c", twiddlie[0]);
	239	fflush(stdout);
	240	}
	241
	242	for (block = 0; block < fw_blocks; block++) {
	243	len = fw[block][2] << 8;
	244	len \|= fw[block][3];
	245
	246	len += 4; /* block nr., length */
	247
	248	if (debug)
	249	hexdump(fw[block], len, "F> ");
b5e57d26 MG	250
b5e57d26 MG	251	rdata.ack = 0;
19cb9745 MG	252	if (!hmcfgusb_send(dev, fw[block], len, 0)) {
19cb9745 MG	253	perror("\n\nhmcfgusb_send");
b5e57d26 MG	254	exit(EXIT_FAILURE);
	255	}
	256
19cb9745 MG	257	if (debug)
19cb9745 MG	258	printf("Waiting for ack...\n");
b5e57d26 MG	259	do {
	260	errno = 0;
	261	pfd = hmcfgusb_poll(dev, 1);
	262	if ((pfd < 0) && errno) {
19cb9745	263	perror("\n\nhmcfgusb_poll");
b5e57d26 MG	264	exit(EXIT_FAILURE);
	265	}
	266	if (rdata.ack) {
	267	break;
	268	}
	269	} while (pfd < 0);
	270
	271	if (rdata.ack == 2) {
19cb9745	272	printf("\n\nFirmware update successfull!\n");
b5e57d26 MG	273	break;
b5e57d26 MG	274	}
19cb9745 MG	275
	276	if (rdata.ack != 1) {
	277	fprintf(stderr, "\n\nError flashing block %d, status: %u\n", block, rdata.ack);
	278	exit(EXIT_FAILURE);
	279	}
	280
	281	if (!debug) {
	282	printf("\b%c", twiddlie[block % sizeof(twiddlie)]);
	283	fflush(stdout);
	284	}
	285	free(fw[block]);
	286	}
	287
	288	free(fw);
9fb0f4d2 MG	289
	290	hmcfgusb_close(dev);
	291
	292	return EXIT_SUCCESS;
	293	}