aboutsummaryrefslogtreecommitdiff
path: root/dediprog.c
blob: 996d2d7d9c2385a97ada0ce4a2588f4621a74dc3 (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
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
/*
 * This file is part of the flashrom project.
 *
 * Copyright (C) 2010 Carl-Daniel Hailfinger
 * Copyright (C) 2015 Simon Glass
 * Copyright (C) 2015 Stefan Tauner
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#include "platform.h"

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <limits.h>
#include <errno.h>

#if IS_WINDOWS
#include <lusb0_usb.h>
#else
#include <usb.h>
#endif

#include "flash.h"
#include "chipdrivers.h"
#include "programmer.h"
#include "spi.h"

#define FIRMWARE_VERSION(x,y,z) ((x << 16) | (y << 8) | z)
#define DEFAULT_TIMEOUT 3000
#define REQTYPE_OTHER_OUT (USB_ENDPOINT_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER)		/* 0x43 */
#define REQTYPE_OTHER_IN (USB_ENDPOINT_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER)		/* 0xC3 */
#define REQTYPE_EP_OUT (USB_ENDPOINT_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT)	/* 0x42 */
#define REQTYPE_EP_IN (USB_ENDPOINT_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT)		/* 0xC2 */
static usb_dev_handle *dediprog_handle;
static int dediprog_endpoint;

enum dediprog_leds {
	LED_INVALID		= -1,
	LED_NONE		= 0,
	LED_PASS		= 1 << 0,
	LED_BUSY		= 1 << 1,
	LED_ERROR		= 1 << 2,
	LED_ALL			= 7,
};

/* IO bits for CMD_SET_IO_LED message */
enum dediprog_ios {
	IO1			= 1 << 0,
	IO2			= 1 << 1,
	IO3			= 1 << 2,
	IO4			= 1 << 3,
};

enum dediprog_cmds {
	CMD_TRANSCEIVE		= 0x01,
	CMD_POLL_STATUS_REG	= 0x02,
	CMD_SET_VPP		= 0x03,
	CMD_SET_TARGET		= 0x04,
	CMD_READ_EEPROM		= 0x05,
	CMD_WRITE_EEPROM	= 0x06,
	CMD_SET_IO_LED		= 0x07,
	CMD_READ_PROG_INFO	= 0x08,
	CMD_SET_VCC		= 0x09,
	CMD_SET_STANDALONE	= 0x0A,
	CMD_GET_BUTTON		= 0x11,
	CMD_GET_UID		= 0x12,
	CMD_SET_CS		= 0x14,
	CMD_IO_MODE		= 0x15,
	CMD_FW_UPDATE		= 0x1A,
	CMD_FPGA_UPDATE		= 0x1B,
	CMD_READ_FPGA_VERSION	= 0x1C,
	CMD_SET_HOLD		= 0x1D,
	CMD_READ		= 0x20,
	CMD_WRITE		= 0x30,
	CMD_WRITE_AT45DB	= 0x31,
	CMD_NAND_WRITE		= 0x32,
	CMD_NAND_READ		= 0x33,
	CMD_SET_SPI_CLK		= 0x61,
	CMD_CHECK_SOCKET	= 0x62,
	CMD_DOWNLOAD_PRJ	= 0x63,
	CMD_READ_PRJ_NAME	= 0x64,
	// New protocol/firmware only
	CMD_CHECK_SDCARD	= 0x65,
	CMD_READ_PRJ		= 0x66,
};

enum dediprog_target {
	FLASH_TYPE_APPLICATION_FLASH_1	= 0,
	FLASH_TYPE_FLASH_CARD,
	FLASH_TYPE_APPLICATION_FLASH_2,
	FLASH_TYPE_SOCKET,
};

enum dediprog_readmode {
	READ_MODE_STD			= 1,
	READ_MODE_FAST			= 2,
	READ_MODE_ATMEL45		= 3,
	READ_MODE_4B_ADDR_FAST		= 4,
	READ_MODE_4B_ADDR_FAST_0x0C	= 5, /* New protocol only */
};

enum dediprog_writemode {
	WRITE_MODE_PAGE_PGM 			= 1,
	WRITE_MODE_PAGE_WRITE			= 2,
	WRITE_MODE_1B_AAI			= 3,
	WRITE_MODE_2B_AAI			= 4,
	WRITE_MODE_128B_PAGE			= 5,
	WRITE_MODE_PAGE_AT26DF041		= 6,
	WRITE_MODE_SILICON_BLUE_FPGA		= 7,
	WRITE_MODE_64B_PAGE_NUMONYX_PCM		= 8,	/* unit of length 512 bytes */
	WRITE_MODE_4B_ADDR_256B_PAGE_PGM	= 9,
	WRITE_MODE_32B_PAGE_PGM_MXIC_512K	= 10,	/* unit of length 512 bytes */
	WRITE_MODE_4B_ADDR_256B_PAGE_PGM_0x12	= 11,
	WRITE_MODE_4B_ADDR_256B_PAGE_PGM_FLAGS	= 12,
};


static int dediprog_firmwareversion = FIRMWARE_VERSION(0, 0, 0);

#if 0
/* Might be useful for other pieces of code as well. */
static void print_hex(void *buf, size_t len)
{
	size_t i;

	for (i = 0; i < len; i++)
		msg_pdbg(" %02x", ((uint8_t *)buf)[i]);
}
#endif

/* Might be useful for other USB devices as well. static for now. */
/* device parameter allows user to specify one device of multiple installed */
static struct usb_device *get_device_by_vid_pid(uint16_t vid, uint16_t pid, unsigned int device)
{
	struct usb_bus *bus;
	struct usb_device *dev;

	for (bus = usb_get_busses(); bus; bus = bus->next)
		for (dev = bus->devices; dev; dev = dev->next)
			if ((dev->descriptor.idVendor == vid) &&
			    (dev->descriptor.idProduct == pid)) {
				if (device == 0)
					return dev;
				device--;
			}

	return NULL;
}

/* This function sets the GPIOs connected to the LEDs as well as IO1-IO4. */
static int dediprog_set_leds(int leds)
{
	if (leds < LED_NONE || leds > LED_ALL)
		leds = LED_ALL;

	/* Older Dediprogs with 2.x.x and 3.x.x firmware only had
	 * two LEDs, and they were reversed. So map them around if 
	 * we have an old device. On those devices the LEDs map as
	 * follows:
	 *   bit 2 == 0: green light is on.
	 *   bit 0 == 0: red light is on. 
	 */
	int target_leds;
	if (dediprog_firmwareversion < FIRMWARE_VERSION(5,0,0)) {
		target_leds = ((leds & LED_ERROR) >> 2) |
			((leds & LED_PASS) << 2);
	} else {
		target_leds = leds;
	}

	target_leds ^= 7;
	int ret = usb_control_msg(dediprog_handle, REQTYPE_EP_OUT, CMD_SET_IO_LED, 0x09, target_leds,
				  NULL, 0x0, DEFAULT_TIMEOUT);
	if (ret != 0x0) {
		msg_perr("Command Set LED 0x%x failed (%s)!\n", leds, usb_strerror());
		return 1;
	}

	return 0;
}

static int dediprog_set_spi_voltage(int millivolt)
{
	int ret;
	uint16_t voltage_selector;

	switch (millivolt) {
	case 0:
		/* Admittedly this one is an assumption. */
		voltage_selector = 0x0;
		break;
	case 1800:
		voltage_selector = 0x12;
		break;
	case 2500:
		voltage_selector = 0x11;
		break;
	case 3500:
		voltage_selector = 0x10;
		break;
	default:
		msg_perr("Unknown voltage %i mV! Aborting.\n", millivolt);
		return 1;
	}
	msg_pdbg("Setting SPI voltage to %u.%03u V\n", millivolt / 1000,
		 millivolt % 1000);

	if (voltage_selector == 0) {
		/* Wait some time as the original driver does. */
		programmer_delay(200 * 1000);
	}
	ret = usb_control_msg(dediprog_handle, REQTYPE_EP_OUT, CMD_SET_VCC, voltage_selector, 0,
			      NULL, 0x0, DEFAULT_TIMEOUT);
	if (ret != 0x0) {
		msg_perr("Command Set SPI Voltage 0x%x failed!\n",
			 voltage_selector);
		return 1;
	}
	if (voltage_selector != 0) {
		/* Wait some time as the original driver does. */
		programmer_delay(200 * 1000);
	}
	return 0;
}

struct dediprog_spispeeds {
	const char *const name;
	const int speed;
};

static const struct dediprog_spispeeds spispeeds[] = {
	{ "24M",	0x0 },
	{ "12M",	0x2 },
	{ "8M",		0x1 },
	{ "3M",		0x3 },
	{ "2.18M",	0x4 },
	{ "1.5M",	0x5 },
	{ "750k",	0x6 },
	{ "375k",	0x7 },
	{ NULL,		0x0 },
};

static int dediprog_set_spi_speed(unsigned int spispeed_idx)
{
	if (dediprog_firmwareversion < FIRMWARE_VERSION(5, 0, 0)) {
		msg_pwarn("Skipping to set SPI speed because firmware is too old.\n");
		return 0;
	}

	const struct dediprog_spispeeds *spispeed = &spispeeds[spispeed_idx];
	msg_pdbg("SPI speed is %sHz\n", spispeed->name);

	int ret = usb_control_msg(dediprog_handle, REQTYPE_EP_OUT, CMD_SET_SPI_CLK, spispeed->speed, 0xff,
				  NULL, 0x0, DEFAULT_TIMEOUT);
	if (ret != 0x0) {
		msg_perr("Command Set SPI Speed 0x%x failed!\n", spispeed->speed);
		return 1;
	}
	return 0;
}

/* Bulk read interface, will read multiple 512 byte chunks aligned to 512 bytes.
 * @start	start address
 * @len		length
 * @return	0 on success, 1 on failure
 */
static int dediprog_spi_bulk_read(struct flashctx *flash, uint8_t *buf,
				  unsigned int start, unsigned int len)
{
	int ret;
	unsigned int i;
	/* chunksize must be 512, other sizes will NOT work at all. */
	const unsigned int chunksize = 0x200;
	const unsigned int count = len / chunksize;
	const char count_and_chunk[] = {count & 0xff,
					(count >> 8) & 0xff,
					chunksize & 0xff,
					(chunksize >> 8) & 0xff};

	if ((start % chunksize) || (len % chunksize)) {
		msg_perr("%s: Unaligned start=%i, len=%i! Please report a bug "
			 "at flashrom@flashrom.org\n", __func__, start, len);
		return 1;
	}

	/* No idea if the hardware can handle empty reads, so chicken out. */
	if (!len)
		return 0;
	/* Command Read SPI Bulk. No idea which read command is used on the
	 * SPI side.
	 */
	ret = usb_control_msg(dediprog_handle, REQTYPE_EP_OUT, CMD_READ, start % 0x10000,
			      start / 0x10000, (char *)count_and_chunk,
			      sizeof(count_and_chunk), DEFAULT_TIMEOUT);
	if (ret != sizeof(count_and_chunk)) {
		msg_perr("Command Read SPI Bulk failed, %i %s!\n", ret,
			 usb_strerror());
		return 1;
	}

	for (i = 0; i < count; i++) {
		ret = usb_bulk_read(dediprog_handle, 0x80 | dediprog_endpoint,
				    (char *)buf + i * chunksize, chunksize,
				    DEFAULT_TIMEOUT);
		if (ret != chunksize) {
			msg_perr("SPI bulk read %i failed, expected %i, got %i "
				 "%s!\n", i, chunksize, ret, usb_strerror());
			return 1;
		}
	}

	return 0;
}

static int dediprog_spi_read(struct flashctx *flash, uint8_t *buf,
			     unsigned int start, unsigned int len)
{
	int ret;
	/* chunksize must be 512, other sizes will NOT work at all. */
	const unsigned int chunksize = 0x200;
	unsigned int residue = start % chunksize ? chunksize - start % chunksize : 0;
	unsigned int bulklen;

	dediprog_set_leds(LED_BUSY);

	if (residue) {
		msg_pdbg("Slow read for partial block from 0x%x, length 0x%x\n",
			 start, residue);
		ret = spi_read_chunked(flash, buf, start, residue, 16);
		if (ret)
			goto err;
	}

	/* Round down. */
	bulklen = (len - residue) / chunksize * chunksize;
	ret = dediprog_spi_bulk_read(flash, buf + residue, start + residue,
				     bulklen);
	if (ret)
		goto err;

	len -= residue + bulklen;
	if (len) {
		msg_pdbg("Slow read for partial block from 0x%x, length 0x%x\n",
			 start, len);
		ret = spi_read_chunked(flash, buf + residue + bulklen,
				       start + residue + bulklen, len, 16);
		if (ret)
			goto err;
	}

	dediprog_set_leds(LED_PASS);
	return 0;
err:
	dediprog_set_leds(LED_ERROR);
	return ret;
}

/* Bulk write interface, will write multiple chunksize byte chunks aligned to chunksize bytes.
 * @chunksize       length of data chunks, only 256 supported by now
 * @start           start address
 * @len             length
 * @dedi_spi_cmd    dediprog specific write command for spi bus
 * @return          0 on success, 1 on failure
 */
static int dediprog_spi_bulk_write(struct flashctx *flash, const uint8_t *buf, unsigned int chunksize,
				   unsigned int start, unsigned int len, uint8_t dedi_spi_cmd)
{
	int ret;
	unsigned int i;
	/* USB transfer size must be 512, other sizes will NOT work at all.
	 * chunksize is the real data size per USB bulk transfer. The remaining
	 * space in a USB bulk transfer must be filled with 0xff padding.
	 */
	const unsigned int count = len / chunksize;
	const char count_and_cmd[] = {count & 0xff, (count >> 8) & 0xff, 0x00, dedi_spi_cmd};
	char usbbuf[512];

	/*
	 * We should change this check to
	 *   chunksize > 512
	 * once we know how to handle different chunk sizes.
	 */
	if (chunksize != 256) {
		msg_perr("%s: Chunk sizes other than 256 bytes are unsupported, chunksize=%u!\n"
			 "Please report a bug at flashrom@flashrom.org\n", __func__, chunksize);
		return 1;
	}

	if ((start % chunksize) || (len % chunksize)) {
		msg_perr("%s: Unaligned start=%i, len=%i! Please report a bug "
			 "at flashrom@flashrom.org\n", __func__, start, len);
		return 1;
	}

	/* No idea if the hardware can handle empty writes, so chicken out. */
	if (!len)
		return 0;
	/* Command Write SPI Bulk. No idea which write command is used on the
	 * SPI side.
	 */
	ret = usb_control_msg(dediprog_handle, REQTYPE_EP_OUT, CMD_WRITE, start % 0x10000, start / 0x10000,
			      (char *)count_and_cmd, sizeof(count_and_cmd), DEFAULT_TIMEOUT);
	if (ret != sizeof(count_and_cmd)) {
		msg_perr("Command Write SPI Bulk failed, %i %s!\n", ret,
			 usb_strerror());
		return 1;
	}

	for (i = 0; i < count; i++) {
		memset(usbbuf, 0xff, sizeof(usbbuf));
		memcpy(usbbuf, buf + i * chunksize, chunksize);
		ret = usb_bulk_write(dediprog_handle, dediprog_endpoint,
				    usbbuf, 512,
				    DEFAULT_TIMEOUT);
		if (ret != 512) {
			msg_perr("SPI bulk write failed, expected %i, got %i "
				 "%s!\n", 512, ret, usb_strerror());
			return 1;
		}
	}

	return 0;
}

static int dediprog_spi_write(struct flashctx *flash, const uint8_t *buf,
			      unsigned int start, unsigned int len, uint8_t dedi_spi_cmd)
{
	int ret;
	const unsigned int chunksize = flash->chip->page_size;
	unsigned int residue = start % chunksize ? chunksize - start % chunksize : 0;
	unsigned int bulklen;

	dediprog_set_leds(LED_BUSY);

	if (chunksize != 256) {
		msg_pdbg("Page sizes other than 256 bytes are unsupported as "
			 "we don't know how dediprog\nhandles them.\n");
		/* Write everything like it was residue. */
		residue = len;
	}

	if (residue) {
		msg_pdbg("Slow write for partial block from 0x%x, length 0x%x\n",
			 start, residue);
		/* No idea about the real limit. Maybe 12, maybe more. */
		ret = spi_write_chunked(flash, buf, start, residue, 12);
		if (ret) {
			dediprog_set_leds(LED_ERROR);
			return ret;
		}
	}

	/* Round down. */
	bulklen = (len - residue) / chunksize * chunksize;
	ret = dediprog_spi_bulk_write(flash, buf + residue, chunksize, start + residue, bulklen, dedi_spi_cmd);
	if (ret) {
		dediprog_set_leds(LED_ERROR);
		return ret;
	}

	len -= residue + bulklen;
	if (len) {
		msg_pdbg("Slow write for partial block from 0x%x, length 0x%x\n",
			 start, len);
		ret = spi_write_chunked(flash, buf + residue + bulklen,
				        start + residue + bulklen, len, 12);
		if (ret) {
			dediprog_set_leds(LED_ERROR);
			return ret;
		}
	}

	dediprog_set_leds(LED_PASS);
	return 0;
}

static int dediprog_spi_write_256(struct flashctx *flash, const uint8_t *buf, unsigned int start, unsigned int len)
{
	return dediprog_spi_write(flash, buf, start, len, WRITE_MODE_PAGE_PGM);
}

static int dediprog_spi_write_aai(struct flashctx *flash, const uint8_t *buf, unsigned int start, unsigned int len)
{
	return dediprog_spi_write(flash, buf, start, len, WRITE_MODE_2B_AAI);
}

static int dediprog_spi_send_command(struct flashctx *flash,
				     unsigned int writecnt,
				     unsigned int readcnt,
				     const unsigned char *writearr,
				     unsigned char *readarr)
{
	int ret;

	msg_pspew("%s, writecnt=%i, readcnt=%i\n", __func__, writecnt, readcnt);
	if (writecnt > UINT16_MAX) {
		msg_perr("Invalid writecnt=%i, aborting.\n", writecnt);
		return 1;
	}
	if (readcnt > UINT16_MAX) {
		msg_perr("Invalid readcnt=%i, aborting.\n", readcnt);
		return 1;
	}
	
	ret = usb_control_msg(dediprog_handle, REQTYPE_EP_OUT, CMD_TRANSCEIVE, 0, readcnt ? 0x1 : 0x0,
			      (char *)writearr, writecnt, DEFAULT_TIMEOUT);
	if (ret != writecnt) {
		msg_perr("Send SPI failed, expected %i, got %i %s!\n",
			 writecnt, ret, usb_strerror());
		return 1;
	}
	if (readcnt == 0)
		return 0;

	ret = usb_control_msg(dediprog_handle, REQTYPE_EP_IN, CMD_TRANSCEIVE, 0, 0,
			     (char *)readarr, readcnt, DEFAULT_TIMEOUT);
	if (ret != readcnt) {
		msg_perr("Receive SPI failed, expected %i, got %i %s!\n",
			 readcnt, ret, usb_strerror());
		return 1;
	}
	return 0;
}

static int dediprog_check_devicestring(void)
{
	int ret;
	int fw[3];
	char buf[0x11];

#if 0
	/* Command Prepare Receive Device String. */
	ret = usb_control_msg(dediprog_handle, REQTYPE_OTHER_IN, 0x7, 0x0, 0xef03,
			      buf, 0x1, DEFAULT_TIMEOUT);
	/* The char casting is needed to stop gcc complaining about an always true comparison. */
	if ((ret != 0x1) || (buf[0] != (char)0xff)) {
		msg_perr("Unexpected response to Command Prepare Receive Device"
			 " String!\n");
		return 1;
	}
#endif
	/* Command Receive Device String. */
	ret = usb_control_msg(dediprog_handle, REQTYPE_EP_IN, CMD_READ_PROG_INFO, 0, 0,
			      buf, 0x10, DEFAULT_TIMEOUT);
	if (ret != 0x10) {
		msg_perr("Incomplete/failed Command Receive Device String!\n");
		return 1;
	}
	buf[0x10] = '\0';
	msg_pdbg("Found a %s\n", buf);
	if (memcmp(buf, "SF100", 0x5) != 0) {
		msg_perr("Device not a SF100!\n");
		return 1;
	}
	if (sscanf(buf, "SF100 V:%d.%d.%d ", &fw[0], &fw[1], &fw[2]) != 3) {
		msg_perr("Unexpected firmware version string!\n");
		return 1;
	}
	/* Only these versions were tested. */
	if (fw[0] < 2 || fw[0] > 5) {
		msg_perr("Unexpected firmware version %d.%d.%d!\n", fw[0],
			 fw[1], fw[2]);
		return 1;
	}
	dediprog_firmwareversion = FIRMWARE_VERSION(fw[0], fw[1], fw[2]);
	return 0;
}

static int dediprog_device_init(void)
{
	int ret;
	char buf[0x1];

	memset(buf, 0, sizeof(buf));
	ret = usb_control_msg(dediprog_handle, REQTYPE_OTHER_IN, 0x0B, 0x0, 0x0,
			      buf, 0x1, DEFAULT_TIMEOUT);
	if (ret < 0) {
		msg_perr("Command A failed (%s)!\n", usb_strerror());
		return 1;
	}
	if ((ret != 0x1) || (buf[0] != 0x6f)) {
		msg_perr("Unexpected response to init!\n");
		return 1;
	}
	return 0;
}

#if 0
/* Something.
 * Present in eng_detect_blink.log with firmware 3.1.8
 * Always preceded by Command Receive Device String
 */
static int dediprog_command_b(void)
{
	int ret;
	char buf[0x3];

	ret = usb_control_msg(dediprog_handle, REQTYPE_OTHER_IN, 0x7, 0x0, 0xef00,
			      buf, 0x3, DEFAULT_TIMEOUT);
	if (ret < 0) {
		msg_perr("Command B failed (%s)!\n", usb_strerror());
		return 1;
	}
	if ((ret != 0x3) || (buf[0] != 0xff) || (buf[1] != 0xff) ||
	    (buf[2] != 0xff)) {
		msg_perr("Unexpected response to Command B!\n");
		return 1;
	}

	return 0;
}
#endif

static int set_target_flash(enum dediprog_target target)
{
	int ret = usb_control_msg(dediprog_handle, REQTYPE_EP_OUT, CMD_SET_TARGET, target, 0,
			          NULL, 0, DEFAULT_TIMEOUT);
	if (ret != 0) {
		msg_perr("set_target_flash failed (%s)!\n", usb_strerror());
		return 1;
	}
	return 0;
}

#if 0
/* Returns true if the button is currently pressed. */
static bool dediprog_get_button(void)
{
	char buf[1];
	int ret = usb_control_msg(dediprog_handle, REQTYPE_EP_IN, CMD_GET_BUTTON, 0, 0,
			      buf, 0x1, DEFAULT_TIMEOUT);
	if (ret != 0) {
		msg_perr("Could not get button state (%s)!\n", usb_strerror());
		return 1;
	}
	return buf[0] != 1;
}
#endif

static int parse_voltage(char *voltage)
{
	char *tmp = NULL;
	int i;
	int millivolt = 0, fraction = 0;

	if (!voltage || !strlen(voltage)) {
		msg_perr("Empty voltage= specified.\n");
		return -1;
	}
	millivolt = (int)strtol(voltage, &tmp, 0);
	voltage = tmp;
	/* Handle "," and "." as decimal point. Everything after it is assumed
	 * to be in decimal notation.
	 */
	if ((*voltage == '.') || (*voltage == ',')) {
		voltage++;
		for (i = 0; i < 3; i++) {
			fraction *= 10;
			/* Don't advance if the current character is invalid,
			 * but continue multiplying.
			 */
			if ((*voltage < '0') || (*voltage > '9'))
				continue;
			fraction += *voltage - '0';
			voltage++;
		}
		/* Throw away remaining digits. */
		voltage += strspn(voltage, "0123456789");
	}
	/* The remaining string must be empty or "mV" or "V". */
	tolower_string(voltage);

	/* No unit or "V". */
	if ((*voltage == '\0') || !strncmp(voltage, "v", 1)) {
		millivolt *= 1000;
		millivolt += fraction;
	} else if (!strncmp(voltage, "mv", 2) ||
		   !strncmp(voltage, "milliv", 6)) {
		/* No adjustment. fraction is discarded. */
	} else {
		/* Garbage at the end of the string. */
		msg_perr("Garbage voltage= specified.\n");
		return -1;
	}
	return millivolt;
}

static const struct spi_master spi_master_dediprog = {
	.type		= SPI_CONTROLLER_DEDIPROG,
	.max_data_read	= MAX_DATA_UNSPECIFIED,
	.max_data_write	= MAX_DATA_UNSPECIFIED,
	.command	= dediprog_spi_send_command,
	.multicommand	= default_spi_send_multicommand,
	.read		= dediprog_spi_read,
	.write_256	= dediprog_spi_write_256,
	.write_aai	= dediprog_spi_write_aai,
};

static int dediprog_shutdown(void *data)
{
	msg_pspew("%s\n", __func__);

	dediprog_firmwareversion = FIRMWARE_VERSION(0, 0, 0);

	/* URB 28. Command Set SPI Voltage to 0. */
	if (dediprog_set_spi_voltage(0x0))
		return 1;

	if (usb_release_interface(dediprog_handle, 0)) {
		msg_perr("Could not release USB interface!\n");
		return 1;
	}
	if (usb_close(dediprog_handle)) {
		msg_perr("Could not close USB device!\n");
		return 1;
	}
	return 0;
}

/* URB numbers refer to the first log ever captured. */
int dediprog_init(void)
{
	struct usb_device *dev;
	char *voltage, *device, *spispeed, *target_str;
	int spispeed_idx = 1;
	int millivolt = 3500;
	long usedevice = 0;
	long target = 1;
	int i, ret;

	msg_pspew("%s\n", __func__);

	spispeed = extract_programmer_param("spispeed");
	if (spispeed) {
		for (i = 0; spispeeds[i].name; ++i) {
			if (!strcasecmp(spispeeds[i].name, spispeed)) {
				spispeed_idx = i;
				break;
			}
		}
		if (!spispeeds[i].name) {
			msg_perr("Error: Invalid spispeed value: '%s'.\n", spispeed);
			free(spispeed);
			return 1;
		}
		free(spispeed);
	}

	voltage = extract_programmer_param("voltage");
	if (voltage) {
		millivolt = parse_voltage(voltage);
		free(voltage);
		if (millivolt < 0)
			return 1;
		msg_pinfo("Setting voltage to %i mV\n", millivolt);
	}

	device = extract_programmer_param("device");
	if (device) {
		char *dev_suffix;
		errno = 0;
		usedevice = strtol(device, &dev_suffix, 10);
		if (errno != 0 || device == dev_suffix) {
			msg_perr("Error: Could not convert 'device'.\n");
			free(device);
			return 1;
		}
		if (usedevice < 0 || usedevice > UINT_MAX) {
			msg_perr("Error: Value for 'device' is out of range.\n");
			free(device);
			return 1;
		}
		if (strlen(dev_suffix) > 0) {
			msg_perr("Error: Garbage following 'device' value.\n");
			free(device);
			return 1;
		}
		msg_pinfo("Using device %li.\n", usedevice);
	}
	free(device);

	target_str = extract_programmer_param("target");
	if (target_str) {
		char *target_suffix;
		errno = 0;
		target = strtol(target_str, &target_suffix, 10);
		if (errno != 0 || target_str == target_suffix) {
			msg_perr("Error: Could not convert 'target'.\n");
			free(target_str);
			return 1;
		}
		if (target < 1 || target > 2) {
			msg_perr("Error: Value for 'target' is out of range.\n");
			free(target_str);
			return 1;
		}
		if (strlen(target_suffix) > 0) {
			msg_perr("Error: Garbage following 'target' value.\n");
			free(target_str);
			return 1;
		}
		msg_pinfo("Using target %li.\n", target);
	}
	free(target_str);

	/* Here comes the USB stuff. */
	usb_init();
	usb_find_busses();
	usb_find_devices();
	dev = get_device_by_vid_pid(0x0483, 0xdada, (unsigned int) usedevice);
	if (!dev) {
		msg_perr("Could not find a Dediprog SF100 on USB!\n");
		return 1;
	}
	msg_pdbg("Found USB device (%04x:%04x).\n",
		 dev->descriptor.idVendor, dev->descriptor.idProduct);
	dediprog_handle = usb_open(dev);
	if (!dediprog_handle) {
		msg_perr("Could not open USB device: %s\n", usb_strerror());
		return 1;
	}
	ret = usb_set_configuration(dediprog_handle, 1);
	if (ret < 0) {
		msg_perr("Could not set USB device configuration: %i %s\n",
			 ret, usb_strerror());
		if (usb_close(dediprog_handle))
			msg_perr("Could not close USB device!\n");
		return 1;
	}
	ret = usb_claim_interface(dediprog_handle, 0);
	if (ret < 0) {
		msg_perr("Could not claim USB device interface %i: %i %s\n",
			 0, ret, usb_strerror());
		if (usb_close(dediprog_handle))
			msg_perr("Could not close USB device!\n");
		return 1;
	}
	dediprog_endpoint = 2;

	if (register_shutdown(dediprog_shutdown, NULL))
		return 1;

	/* Perform basic setup. */
	if (dediprog_device_init())
		return 1;
	if (dediprog_check_devicestring())
		return 1;

	/* Set all possible LEDs as soon as possible to indicate activity.
	 * Because knowing the firmware version is required to set the LEDs correctly we need to this after
	 * dediprog_setup() has queried the device and set dediprog_firmwareversion. */
	dediprog_set_leds(LED_ALL);

	/* Select target/socket, frequency and VCC. */
	if (set_target_flash(FLASH_TYPE_APPLICATION_FLASH_1) ||
	    dediprog_set_spi_speed(spispeed_idx) ||
	    dediprog_set_spi_voltage(millivolt)) {
		dediprog_set_leds(LED_ERROR);
		return 1;
	}

	register_spi_master(&spi_master_dediprog);

	dediprog_set_leds(LED_NONE);

	return 0;
}