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target/xtensa: avoid IHI for writes to non-executable memory
[openocd.git] / src / jtag / drivers / ftdi.c
blob58f83af59292896c9a07ab01a5761f82de2ec559
1 // SPDX-License-Identifier: GPL-2.0-or-later
2
3 /**************************************************************************
4 * Copyright (C) 2012 by Andreas Fritiofson *
5 * andreas.fritiofson@gmail.com *
6 ***************************************************************************/
7
8 /**
9 * @file
10 * JTAG adapters based on the FT2232 full and high speed USB parts are
11 * popular low cost JTAG debug solutions. Many FT2232 based JTAG adapters
12 * are discrete, but development boards may integrate them as alternatives
13 * to more capable (and expensive) third party JTAG pods.
14 *
15 * JTAG uses only one of the two communications channels ("MPSSE engines")
16 * on these devices. Adapters based on FT4232 parts have four ports/channels
17 * (A/B/C/D), instead of just two (A/B).
18 *
19 * Especially on development boards integrating one of these chips (as
20 * opposed to discrete pods/dongles), the additional channels can be used
21 * for a variety of purposes, but OpenOCD only uses one channel at a time.
22 *
23 * - As a USB-to-serial adapter for the target's console UART ...
24 * which may be able to support ROM boot loaders that load initial
25 * firmware images to flash (or SRAM).
26 *
27 * - On systems which support ARM's SWD in addition to JTAG, or instead
28 * of it, that second port can be used for reading SWV/SWO trace data.
29 *
30 * - Additional JTAG links, e.g. to a CPLD or * FPGA.
31 *
32 * FT2232 based JTAG adapters are "dumb" not "smart", because most JTAG
33 * request/response interactions involve round trips over the USB link.
34 * A "smart" JTAG adapter has intelligence close to the scan chain, so it
35 * can for example poll quickly for a status change (usually taking on the
36 * order of microseconds not milliseconds) before beginning a queued
37 * transaction which require the previous one to have completed.
38 *
39 * There are dozens of adapters of this type, differing in details which
40 * this driver needs to understand. Those "layout" details are required
41 * as part of FT2232 driver configuration.
42 *
43 * This code uses information contained in the MPSSE specification which was
44 * found here:
45 * https://www.ftdichip.com/Support/Documents/AppNotes/AN2232C-01_MPSSE_Cmnd.pdf
46 * Hereafter this is called the "MPSSE Spec".
47 *
48 * The datasheet for the ftdichip.com's FT2232H part is here:
49 * https://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT2232H.pdf
50 *
51 * Also note the issue with code 0x4b (clock data to TMS) noted in
52 * http://developer.intra2net.com/mailarchive/html/libftdi/2009/msg00292.html
53 * which can affect longer JTAG state paths.
54 */
55
56 #ifdef HAVE_CONFIG_H
57 #include "config.h"
58 #endif
59
60 /* project specific includes */
61 #include <jtag/adapter.h>
62 #include <jtag/interface.h>
63 #include <jtag/swd.h>
64 #include <transport/transport.h>
65 #include <helper/time_support.h>
66 #include <helper/log.h>
67 #include <helper/nvp.h>
68
69 #if IS_CYGWIN == 1
70 #include <windows.h>
71 #endif
72
73 #include <assert.h>
74
75 /* FTDI access library includes */
76 #include "mpsse.h"
77
78 #define JTAG_MODE (LSB_FIRST | POS_EDGE_IN | NEG_EDGE_OUT)
79 #define JTAG_MODE_ALT (LSB_FIRST | NEG_EDGE_IN | NEG_EDGE_OUT)
80 #define SWD_MODE (LSB_FIRST | POS_EDGE_IN | NEG_EDGE_OUT)
81
82 static char *ftdi_device_desc;
83 static uint8_t ftdi_channel;
84 static uint8_t ftdi_jtag_mode = JTAG_MODE;
85
86 static bool swd_mode;
87
88 #define MAX_USB_IDS 8
89 /* vid = pid = 0 marks the end of the list */
90 static uint16_t ftdi_vid[MAX_USB_IDS + 1] = { 0 };
91 static uint16_t ftdi_pid[MAX_USB_IDS + 1] = { 0 };
92
93 static struct mpsse_ctx *mpsse_ctx;
94
95 struct signal {
96 const char *name;
97 uint16_t data_mask;
98 uint16_t input_mask;
99 uint16_t oe_mask;
100 bool invert_data;
101 bool invert_input;
102 bool invert_oe;
103 struct signal *next;
104 };
105
106 static struct signal *signals;
107
108 /* FIXME: Where to store per-instance data? We need an SWD context. */
109 static struct swd_cmd_queue_entry {
110 uint8_t cmd;
111 uint32_t *dst;
112 uint8_t trn_ack_data_parity_trn[DIV_ROUND_UP(4 + 3 + 32 + 1 + 4, 8)];
113 } *swd_cmd_queue;
114 static size_t swd_cmd_queue_length;
115 static size_t swd_cmd_queue_alloced;
116 static int queued_retval;
117 static int freq;
118
119 static uint16_t output;
120 static uint16_t direction;
121 static uint16_t jtag_output_init;
122 static uint16_t jtag_direction_init;
123
124 static int ftdi_swd_switch_seq(enum swd_special_seq seq);
125
126 static struct signal *find_signal_by_name(const char *name)
127 {
128 for (struct signal *sig = signals; sig; sig = sig->next) {
129 if (strcmp(name, sig->name) == 0)
130 return sig;
131 }
132 return NULL;
133 }
134
135 static struct signal *create_signal(const char *name)
136 {
137 struct signal **psig = &signals;
138 while (*psig)
139 psig = &(*psig)->next;
140
141 *psig = calloc(1, sizeof(**psig));
142 if (!*psig)
143 return NULL;
144
145 (*psig)->name = strdup(name);
146 if (!(*psig)->name) {
147 free(*psig);
148 *psig = NULL;
149 }
150 return *psig;
151 }
152
153 static int ftdi_set_signal(const struct signal *s, char value)
154 {
155 bool data;
156 bool oe;
157
158 if (s->data_mask == 0 && s->oe_mask == 0) {
159 LOG_ERROR("interface doesn't provide signal '%s'", s->name);
160 return ERROR_FAIL;
161 }
162 switch (value) {
163 case '0':
164 data = s->invert_data;
165 oe = !s->invert_oe;
166 break;
167 case '1':
168 if (s->data_mask == 0) {
169 LOG_ERROR("interface can't drive '%s' high", s->name);
170 return ERROR_FAIL;
171 }
172 data = !s->invert_data;
173 oe = !s->invert_oe;
174 break;
175 case 'z':
176 case 'Z':
177 if (s->oe_mask == 0) {
178 LOG_ERROR("interface can't tri-state '%s'", s->name);
179 return ERROR_FAIL;
180 }
181 data = s->invert_data;
182 oe = s->invert_oe;
183 break;
184 default:
185 LOG_ERROR("invalid signal level specifier \'%c\'(0x%02x)", value, value);
186 return ERROR_FAIL;
187 }
188
189 uint16_t old_output = output;
190 uint16_t old_direction = direction;
191
192 output = data ? output | s->data_mask : output & ~s->data_mask;
193 if (s->oe_mask == s->data_mask)
194 direction = oe ? direction | s->oe_mask : direction & ~s->oe_mask;
195 else
196 output = oe ? output | s->oe_mask : output & ~s->oe_mask;
197
198 if ((output & 0xff) != (old_output & 0xff) || (direction & 0xff) != (old_direction & 0xff))
199 mpsse_set_data_bits_low_byte(mpsse_ctx, output & 0xff, direction & 0xff);
200 if ((output >> 8 != old_output >> 8) || (direction >> 8 != old_direction >> 8))
201 mpsse_set_data_bits_high_byte(mpsse_ctx, output >> 8, direction >> 8);
202
203 return ERROR_OK;
204 }
205
206 static int ftdi_get_signal(const struct signal *s, uint16_t *value_out)
207 {
208 uint8_t data_low = 0;
209 uint8_t data_high = 0;
210
211 if (s->input_mask == 0) {
212 LOG_ERROR("interface doesn't provide signal '%s'", s->name);
213 return ERROR_FAIL;
214 }
215
216 if (s->input_mask & 0xff)
217 mpsse_read_data_bits_low_byte(mpsse_ctx, &data_low);
218 if (s->input_mask >> 8)
219 mpsse_read_data_bits_high_byte(mpsse_ctx, &data_high);
220
221 mpsse_flush(mpsse_ctx);
222
223 *value_out = (((uint16_t)data_high) << 8) | data_low;
224
225 if (s->invert_input)
226 *value_out = ~(*value_out);
227
228 *value_out &= s->input_mask;
229
230 return ERROR_OK;
231 }
232
233 /**
234 * Function move_to_state
235 * moves the TAP controller from the current state to a
236 * \a goal_state through a path given by tap_get_tms_path(). State transition
237 * logging is performed by delegation to clock_tms().
238 *
239 * @param goal_state is the destination state for the move.
240 */
241 static void move_to_state(tap_state_t goal_state)
242 {
243 tap_state_t start_state = tap_get_state();
244
245 /* goal_state is 1/2 of a tuple/pair of states which allow convenient
246 lookup of the required TMS pattern to move to this state from the
247 start state.
248 */
249
250 /* do the 2 lookups */
251 uint8_t tms_bits = tap_get_tms_path(start_state, goal_state);
252 int tms_count = tap_get_tms_path_len(start_state, goal_state);
253 assert(tms_count <= 8);
254
255 LOG_DEBUG_IO("start=%s goal=%s", tap_state_name(start_state), tap_state_name(goal_state));
256
257 /* Track state transitions step by step */
258 for (int i = 0; i < tms_count; i++)
259 tap_set_state(tap_state_transition(tap_get_state(), (tms_bits >> i) & 1));
260
261 mpsse_clock_tms_cs_out(mpsse_ctx,
262 &tms_bits,
263 0,
264 tms_count,
265 false,
266 ftdi_jtag_mode);
267 }
268
269 static int ftdi_speed(int speed)
270 {
271 int retval;
272 retval = mpsse_set_frequency(mpsse_ctx, speed);
273
274 if (retval < 0) {
275 LOG_ERROR("couldn't set FTDI TCK speed");
276 return retval;
277 }
278
279 if (!swd_mode && speed >= 10000000 && ftdi_jtag_mode != JTAG_MODE_ALT)
280 LOG_INFO("ftdi: if you experience problems at higher adapter clocks, try "
281 "the command \"ftdi tdo_sample_edge falling\"");
282 return ERROR_OK;
283 }
284
285 static int ftdi_speed_div(int speed, int *khz)
286 {
287 *khz = speed / 1000;
288 return ERROR_OK;
289 }
290
291 static int ftdi_khz(int khz, int *jtag_speed)
292 {
293 if (khz == 0 && !mpsse_is_high_speed(mpsse_ctx)) {
294 LOG_DEBUG("RCLK not supported");
295 return ERROR_FAIL;
296 }
297
298 *jtag_speed = khz * 1000;
299 return ERROR_OK;
300 }
301
302 static void ftdi_end_state(tap_state_t state)
303 {
304 if (tap_is_state_stable(state))
305 tap_set_end_state(state);
306 else {
307 LOG_ERROR("BUG: %s is not a stable end state", tap_state_name(state));
308 exit(-1);
309 }
310 }
311
312 static void ftdi_execute_runtest(struct jtag_command *cmd)
313 {
314 int i;
315 uint8_t zero = 0;
316
317 LOG_DEBUG_IO("runtest %i cycles, end in %s",
318 cmd->cmd.runtest->num_cycles,
319 tap_state_name(cmd->cmd.runtest->end_state));
320
321 if (tap_get_state() != TAP_IDLE)
322 move_to_state(TAP_IDLE);
323
324 /* TODO: Reuse ftdi_execute_stableclocks */
325 i = cmd->cmd.runtest->num_cycles;
326 while (i > 0) {
327 /* there are no state transitions in this code, so omit state tracking */
328 unsigned this_len = i > 7 ? 7 : i;
329 mpsse_clock_tms_cs_out(mpsse_ctx, &zero, 0, this_len, false, ftdi_jtag_mode);
330 i -= this_len;
331 }
332
333 ftdi_end_state(cmd->cmd.runtest->end_state);
334
335 if (tap_get_state() != tap_get_end_state())
336 move_to_state(tap_get_end_state());
337
338 LOG_DEBUG_IO("runtest: %i, end in %s",
339 cmd->cmd.runtest->num_cycles,
340 tap_state_name(tap_get_end_state()));
341 }
342
343 static void ftdi_execute_statemove(struct jtag_command *cmd)
344 {
345 LOG_DEBUG_IO("statemove end in %s",
346 tap_state_name(cmd->cmd.statemove->end_state));
347
348 ftdi_end_state(cmd->cmd.statemove->end_state);
349
350 /* shortest-path move to desired end state */
351 if (tap_get_state() != tap_get_end_state() || tap_get_end_state() == TAP_RESET)
352 move_to_state(tap_get_end_state());
353 }
354
355 /**
356 * Clock a bunch of TMS (or SWDIO) transitions, to change the JTAG
357 * (or SWD) state machine. REVISIT: Not the best method, perhaps.
358 */
359 static void ftdi_execute_tms(struct jtag_command *cmd)
360 {
361 LOG_DEBUG_IO("TMS: %d bits", cmd->cmd.tms->num_bits);
362
363 /* TODO: Missing tap state tracking, also missing from ft2232.c! */
364 mpsse_clock_tms_cs_out(mpsse_ctx,
365 cmd->cmd.tms->bits,
366 0,
367 cmd->cmd.tms->num_bits,
368 false,
369 ftdi_jtag_mode);
370 }
371
372 static void ftdi_execute_pathmove(struct jtag_command *cmd)
373 {
374 tap_state_t *path = cmd->cmd.pathmove->path;
375 int num_states = cmd->cmd.pathmove->num_states;
376
377 LOG_DEBUG_IO("pathmove: %i states, current: %s end: %s", num_states,
378 tap_state_name(tap_get_state()),
379 tap_state_name(path[num_states-1]));
380
381 int state_count = 0;
382 unsigned bit_count = 0;
383 uint8_t tms_byte = 0;
384
385 LOG_DEBUG_IO("-");
386
387 /* this loop verifies that the path is legal and logs each state in the path */
388 while (num_states--) {
389
390 /* either TMS=0 or TMS=1 must work ... */
391 if (tap_state_transition(tap_get_state(), false)
392 == path[state_count])
393 buf_set_u32(&tms_byte, bit_count++, 1, 0x0);
394 else if (tap_state_transition(tap_get_state(), true)
395 == path[state_count]) {
396 buf_set_u32(&tms_byte, bit_count++, 1, 0x1);
397
398 /* ... or else the caller goofed BADLY */
399 } else {
400 LOG_ERROR("BUG: %s -> %s isn't a valid "
401 "TAP state transition",
402 tap_state_name(tap_get_state()),
403 tap_state_name(path[state_count]));
404 exit(-1);
405 }
406
407 tap_set_state(path[state_count]);
408 state_count++;
409
410 if (bit_count == 7 || num_states == 0) {
411 mpsse_clock_tms_cs_out(mpsse_ctx,
412 &tms_byte,
413 0,
414 bit_count,
415 false,
416 ftdi_jtag_mode);
417 bit_count = 0;
418 }
419 }
420 tap_set_end_state(tap_get_state());
421 }
422
423 static void ftdi_execute_scan(struct jtag_command *cmd)
424 {
425 LOG_DEBUG_IO("%s type:%d", cmd->cmd.scan->ir_scan ? "IRSCAN" : "DRSCAN",
426 jtag_scan_type(cmd->cmd.scan));
427
428 /* Make sure there are no trailing fields with num_bits == 0, or the logic below will fail. */
429 while (cmd->cmd.scan->num_fields > 0
430 && cmd->cmd.scan->fields[cmd->cmd.scan->num_fields - 1].num_bits == 0) {
431 cmd->cmd.scan->num_fields--;
432 LOG_DEBUG_IO("discarding trailing empty field");
433 }
434
435 if (cmd->cmd.scan->num_fields == 0) {
436 LOG_DEBUG_IO("empty scan, doing nothing");
437 return;
438 }
439
440 if (cmd->cmd.scan->ir_scan) {
441 if (tap_get_state() != TAP_IRSHIFT)
442 move_to_state(TAP_IRSHIFT);
443 } else {
444 if (tap_get_state() != TAP_DRSHIFT)
445 move_to_state(TAP_DRSHIFT);
446 }
447
448 ftdi_end_state(cmd->cmd.scan->end_state);
449
450 struct scan_field *field = cmd->cmd.scan->fields;
451 unsigned scan_size = 0;
452
453 for (int i = 0; i < cmd->cmd.scan->num_fields; i++, field++) {
454 scan_size += field->num_bits;
455 LOG_DEBUG_IO("%s%s field %d/%d %d bits",
456 field->in_value ? "in" : "",
457 field->out_value ? "out" : "",
458 i,
459 cmd->cmd.scan->num_fields,
460 field->num_bits);
461
462 if (i == cmd->cmd.scan->num_fields - 1 && tap_get_state() != tap_get_end_state()) {
463 /* Last field, and we're leaving IRSHIFT/DRSHIFT. Clock last bit during tap
464 * movement. This last field can't have length zero, it was checked above. */
465 mpsse_clock_data(mpsse_ctx,
466 field->out_value,
467 0,
468 field->in_value,
469 0,
470 field->num_bits - 1,
471 ftdi_jtag_mode);
472 uint8_t last_bit = 0;
473 if (field->out_value)
474 bit_copy(&last_bit, 0, field->out_value, field->num_bits - 1, 1);
475
476 /* If endstate is TAP_IDLE, clock out 1-1-0 (->EXIT1 ->UPDATE ->IDLE)
477 * Otherwise, clock out 1-0 (->EXIT1 ->PAUSE)
478 */
479 uint8_t tms_bits = 0x03;
480 mpsse_clock_tms_cs(mpsse_ctx,
481 &tms_bits,
482 0,
483 field->in_value,
484 field->num_bits - 1,
485 1,
486 last_bit,
487 ftdi_jtag_mode);
488 tap_set_state(tap_state_transition(tap_get_state(), 1));
489 if (tap_get_end_state() == TAP_IDLE) {
490 mpsse_clock_tms_cs_out(mpsse_ctx,
491 &tms_bits,
492 1,
493 2,
494 last_bit,
495 ftdi_jtag_mode);
496 tap_set_state(tap_state_transition(tap_get_state(), 1));
497 tap_set_state(tap_state_transition(tap_get_state(), 0));
498 } else {
499 mpsse_clock_tms_cs_out(mpsse_ctx,
500 &tms_bits,
501 2,
502 1,
503 last_bit,
504 ftdi_jtag_mode);
505 tap_set_state(tap_state_transition(tap_get_state(), 0));
506 }
507 } else
508 mpsse_clock_data(mpsse_ctx,
509 field->out_value,
510 0,
511 field->in_value,
512 0,
513 field->num_bits,
514 ftdi_jtag_mode);
515 }
516
517 if (tap_get_state() != tap_get_end_state())
518 move_to_state(tap_get_end_state());
519
520 LOG_DEBUG_IO("%s scan, %i bits, end in %s",
521 (cmd->cmd.scan->ir_scan) ? "IR" : "DR", scan_size,
522 tap_state_name(tap_get_end_state()));
523 }
524
525 static int ftdi_reset(int trst, int srst)
526 {
527 struct signal *sig_ntrst = find_signal_by_name("nTRST");
528 struct signal *sig_nsrst = find_signal_by_name("nSRST");
529
530 LOG_DEBUG_IO("reset trst: %i srst %i", trst, srst);
531
532 if (!swd_mode) {
533 if (trst == 1) {
534 if (sig_ntrst)
535 ftdi_set_signal(sig_ntrst, '0');
536 else
537 LOG_ERROR("Can't assert TRST: nTRST signal is not defined");
538 } else if (sig_ntrst && jtag_get_reset_config() & RESET_HAS_TRST &&
539 trst == 0) {
540 if (jtag_get_reset_config() & RESET_TRST_OPEN_DRAIN)
541 ftdi_set_signal(sig_ntrst, 'z');
542 else
543 ftdi_set_signal(sig_ntrst, '1');
544 }
545 }
546
547 if (srst == 1) {
548 if (sig_nsrst)
549 ftdi_set_signal(sig_nsrst, '0');
550 else
551 LOG_ERROR("Can't assert SRST: nSRST signal is not defined");
552 } else if (sig_nsrst && jtag_get_reset_config() & RESET_HAS_SRST &&
553 srst == 0) {
554 if (jtag_get_reset_config() & RESET_SRST_PUSH_PULL)
555 ftdi_set_signal(sig_nsrst, '1');
556 else
557 ftdi_set_signal(sig_nsrst, 'z');
558 }
559
560 return mpsse_flush(mpsse_ctx);
561 }
562
563 static void ftdi_execute_sleep(struct jtag_command *cmd)
564 {
565 LOG_DEBUG_IO("sleep %" PRIu32, cmd->cmd.sleep->us);
566
567 mpsse_flush(mpsse_ctx);
568 jtag_sleep(cmd->cmd.sleep->us);
569 LOG_DEBUG_IO("sleep %" PRIu32 " usec while in %s",
570 cmd->cmd.sleep->us,
571 tap_state_name(tap_get_state()));
572 }
573
574 static void ftdi_execute_stableclocks(struct jtag_command *cmd)
575 {
576 /* this is only allowed while in a stable state. A check for a stable
577 * state was done in jtag_add_clocks()
578 */
579 int num_cycles = cmd->cmd.stableclocks->num_cycles;
580
581 /* 7 bits of either ones or zeros. */
582 uint8_t tms = tap_get_state() == TAP_RESET ? 0x7f : 0x00;
583
584 /* TODO: Use mpsse_clock_data with in=out=0 for this, if TMS can be set to
585 * the correct level and remain there during the scan */
586 while (num_cycles > 0) {
587 /* there are no state transitions in this code, so omit state tracking */
588 unsigned this_len = num_cycles > 7 ? 7 : num_cycles;
589 mpsse_clock_tms_cs_out(mpsse_ctx, &tms, 0, this_len, false, ftdi_jtag_mode);
590 num_cycles -= this_len;
591 }
592
593 LOG_DEBUG_IO("clocks %i while in %s",
594 cmd->cmd.stableclocks->num_cycles,
595 tap_state_name(tap_get_state()));
596 }
597
598 static void ftdi_execute_command(struct jtag_command *cmd)
599 {
600 switch (cmd->type) {
601 case JTAG_RUNTEST:
602 ftdi_execute_runtest(cmd);
603 break;
604 case JTAG_TLR_RESET:
605 ftdi_execute_statemove(cmd);
606 break;
607 case JTAG_PATHMOVE:
608 ftdi_execute_pathmove(cmd);
609 break;
610 case JTAG_SCAN:
611 ftdi_execute_scan(cmd);
612 break;
613 case JTAG_SLEEP:
614 ftdi_execute_sleep(cmd);
615 break;
616 case JTAG_STABLECLOCKS:
617 ftdi_execute_stableclocks(cmd);
618 break;
619 case JTAG_TMS:
620 ftdi_execute_tms(cmd);
621 break;
622 default:
623 LOG_ERROR("BUG: unknown JTAG command type encountered: %d", cmd->type);
624 break;
625 }
626 }
627
628 static int ftdi_execute_queue(struct jtag_command *cmd_queue)
629 {
630 /* blink, if the current layout has that feature */
631 struct signal *led = find_signal_by_name("LED");
632 if (led)
633 ftdi_set_signal(led, '1');
634
635 for (struct jtag_command *cmd = cmd_queue; cmd; cmd = cmd->next) {
636 /* fill the write buffer with the desired command */
637 ftdi_execute_command(cmd);
638 }
639
640 if (led)
641 ftdi_set_signal(led, '0');
642
643 int retval = mpsse_flush(mpsse_ctx);
644 if (retval != ERROR_OK)
645 LOG_ERROR("error while flushing MPSSE queue: %d", retval);
646
647 return retval;
648 }
649
650 static int ftdi_initialize(void)
651 {
652 if (tap_get_tms_path_len(TAP_IRPAUSE, TAP_IRPAUSE) == 7)
653 LOG_DEBUG("ftdi interface using 7 step jtag state transitions");
654 else
655 LOG_DEBUG("ftdi interface using shortest path jtag state transitions");
656
657 if (!ftdi_vid[0] && !ftdi_pid[0]) {
658 LOG_ERROR("Please specify ftdi vid_pid");
659 return ERROR_JTAG_INIT_FAILED;
660 }
661
662 mpsse_ctx = mpsse_open(ftdi_vid, ftdi_pid, ftdi_device_desc,
663 adapter_get_required_serial(), adapter_usb_get_location(), ftdi_channel);
664 if (!mpsse_ctx)
665 return ERROR_JTAG_INIT_FAILED;
666
667 output = jtag_output_init;
668 direction = jtag_direction_init;
669
670 if (swd_mode) {
671 struct signal *sig = find_signal_by_name("SWD_EN");
672 if (!sig) {
673 LOG_ERROR("SWD mode is active but SWD_EN signal is not defined");
674 return ERROR_JTAG_INIT_FAILED;
675 }
676 /* A dummy SWD_EN would have zero mask */
677 if (sig->data_mask)
678 ftdi_set_signal(sig, '1');
679 }
680
681 mpsse_set_data_bits_low_byte(mpsse_ctx, output & 0xff, direction & 0xff);
682 mpsse_set_data_bits_high_byte(mpsse_ctx, output >> 8, direction >> 8);
683
684 mpsse_loopback_config(mpsse_ctx, false);
685
686 freq = mpsse_set_frequency(mpsse_ctx, adapter_get_speed_khz() * 1000);
687
688 return mpsse_flush(mpsse_ctx);
689 }
690
691 static int ftdi_quit(void)
692 {
693 mpsse_close(mpsse_ctx);
694
695 struct signal *sig = signals;
696 while (sig) {
697 struct signal *next = sig->next;
698 free((void *)sig->name);
699 free(sig);
700 sig = next;
701 }
702
703 free(ftdi_device_desc);
704
705 free(swd_cmd_queue);
706
707 return ERROR_OK;
708 }
709
710 COMMAND_HANDLER(ftdi_handle_device_desc_command)
711 {
712 if (CMD_ARGC == 1) {
713 free(ftdi_device_desc);
714 ftdi_device_desc = strdup(CMD_ARGV[0]);
715 } else {
716 LOG_ERROR("expected exactly one argument to ftdi device_desc <description>");
717 }
718
719 return ERROR_OK;
720 }
721
722 COMMAND_HANDLER(ftdi_handle_channel_command)
723 {
724 if (CMD_ARGC == 1)
725 COMMAND_PARSE_NUMBER(u8, CMD_ARGV[0], ftdi_channel);
726 else
727 return ERROR_COMMAND_SYNTAX_ERROR;
728
729 return ERROR_OK;
730 }
731
732 COMMAND_HANDLER(ftdi_handle_layout_init_command)
733 {
734 if (CMD_ARGC != 2)
735 return ERROR_COMMAND_SYNTAX_ERROR;
736
737 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[0], jtag_output_init);
738 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[1], jtag_direction_init);
739
740 return ERROR_OK;
741 }
742
743 COMMAND_HANDLER(ftdi_handle_layout_signal_command)
744 {
745 if (CMD_ARGC < 1)
746 return ERROR_COMMAND_SYNTAX_ERROR;
747
748 bool invert_data = false;
749 uint16_t data_mask = 0;
750 bool invert_input = false;
751 uint16_t input_mask = 0;
752 bool invert_oe = false;
753 uint16_t oe_mask = 0;
754 for (unsigned i = 1; i < CMD_ARGC; i += 2) {
755 if (strcmp("-data", CMD_ARGV[i]) == 0) {
756 invert_data = false;
757 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i + 1], data_mask);
758 } else if (strcmp("-ndata", CMD_ARGV[i]) == 0) {
759 invert_data = true;
760 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i + 1], data_mask);
761 } else if (strcmp("-input", CMD_ARGV[i]) == 0) {
762 invert_input = false;
763 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i + 1], input_mask);
764 } else if (strcmp("-ninput", CMD_ARGV[i]) == 0) {
765 invert_input = true;
766 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i + 1], input_mask);
767 } else if (strcmp("-oe", CMD_ARGV[i]) == 0) {
768 invert_oe = false;
769 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i + 1], oe_mask);
770 } else if (strcmp("-noe", CMD_ARGV[i]) == 0) {
771 invert_oe = true;
772 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i + 1], oe_mask);
773 } else if (!strcmp("-alias", CMD_ARGV[i]) ||
774 !strcmp("-nalias", CMD_ARGV[i])) {
775 if (!strcmp("-nalias", CMD_ARGV[i])) {
776 invert_data = true;
777 invert_input = true;
778 }
779 struct signal *sig = find_signal_by_name(CMD_ARGV[i + 1]);
780 if (!sig) {
781 LOG_ERROR("signal %s is not defined", CMD_ARGV[i + 1]);
782 return ERROR_FAIL;
783 }
784 data_mask = sig->data_mask;
785 input_mask = sig->input_mask;
786 oe_mask = sig->oe_mask;
787 invert_input ^= sig->invert_input;
788 invert_oe = sig->invert_oe;
789 invert_data ^= sig->invert_data;
790 } else {
791 LOG_ERROR("unknown option '%s'", CMD_ARGV[i]);
792 return ERROR_COMMAND_SYNTAX_ERROR;
793 }
794 }
795
796 struct signal *sig;
797 sig = find_signal_by_name(CMD_ARGV[0]);
798 if (!sig)
799 sig = create_signal(CMD_ARGV[0]);
800 if (!sig) {
801 LOG_ERROR("failed to create signal %s", CMD_ARGV[0]);
802 return ERROR_FAIL;
803 }
804
805 sig->invert_data = invert_data;
806 sig->data_mask = data_mask;
807 sig->invert_input = invert_input;
808 sig->input_mask = input_mask;
809 sig->invert_oe = invert_oe;
810 sig->oe_mask = oe_mask;
811
812 return ERROR_OK;
813 }
814
815 COMMAND_HANDLER(ftdi_handle_set_signal_command)
816 {
817 if (CMD_ARGC < 2)
818 return ERROR_COMMAND_SYNTAX_ERROR;
819
820 struct signal *sig;
821 sig = find_signal_by_name(CMD_ARGV[0]);
822 if (!sig) {
823 LOG_ERROR("interface configuration doesn't define signal '%s'", CMD_ARGV[0]);
824 return ERROR_FAIL;
825 }
826
827 switch (*CMD_ARGV[1]) {
828 case '0':
829 case '1':
830 case 'z':
831 case 'Z':
832 /* single character level specifier only */
833 if (CMD_ARGV[1][1] == '\0') {
834 ftdi_set_signal(sig, *CMD_ARGV[1]);
835 break;
836 }
837 /* fallthrough */
838 default:
839 LOG_ERROR("unknown signal level '%s', use 0, 1 or z", CMD_ARGV[1]);
840 return ERROR_COMMAND_ARGUMENT_INVALID;
841 }
842
843 return mpsse_flush(mpsse_ctx);
844 }
845
846 COMMAND_HANDLER(ftdi_handle_get_signal_command)
847 {
848 if (CMD_ARGC < 1)
849 return ERROR_COMMAND_SYNTAX_ERROR;
850
851 struct signal *sig;
852 uint16_t sig_data = 0;
853 sig = find_signal_by_name(CMD_ARGV[0]);
854 if (!sig) {
855 LOG_ERROR("interface configuration doesn't define signal '%s'", CMD_ARGV[0]);
856 return ERROR_FAIL;
857 }
858
859 int ret = ftdi_get_signal(sig, &sig_data);
860 if (ret != ERROR_OK)
861 return ret;
862
863 LOG_USER("Signal %s = %#06x", sig->name, sig_data);
864
865 return ERROR_OK;
866 }
867
868 COMMAND_HANDLER(ftdi_handle_vid_pid_command)
869 {
870 if (CMD_ARGC > MAX_USB_IDS * 2) {
871 LOG_WARNING("ignoring extra IDs in ftdi vid_pid "
872 "(maximum is %d pairs)", MAX_USB_IDS);
873 CMD_ARGC = MAX_USB_IDS * 2;
874 }
875 if (CMD_ARGC < 2 || (CMD_ARGC & 1)) {
876 LOG_WARNING("incomplete ftdi vid_pid configuration directive");
877 if (CMD_ARGC < 2)
878 return ERROR_COMMAND_SYNTAX_ERROR;
879 /* remove the incomplete trailing id */
880 CMD_ARGC -= 1;
881 }
882
883 unsigned i;
884 for (i = 0; i < CMD_ARGC; i += 2) {
885 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i], ftdi_vid[i >> 1]);
886 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i + 1], ftdi_pid[i >> 1]);
887 }
888
889 /*
890 * Explicitly terminate, in case there are multiples instances of
891 * ftdi vid_pid.
892 */
893 ftdi_vid[i >> 1] = ftdi_pid[i >> 1] = 0;
894
895 return ERROR_OK;
896 }
897
898 COMMAND_HANDLER(ftdi_handle_tdo_sample_edge_command)
899 {
900 const struct nvp *n;
901 static const struct nvp nvp_ftdi_jtag_modes[] = {
902 { .name = "rising", .value = JTAG_MODE },
903 { .name = "falling", .value = JTAG_MODE_ALT },
904 { .name = NULL, .value = -1 },
905 };
906
907 if (CMD_ARGC > 0) {
908 n = nvp_name2value(nvp_ftdi_jtag_modes, CMD_ARGV[0]);
909 if (!n->name)
910 return ERROR_COMMAND_SYNTAX_ERROR;
911 ftdi_jtag_mode = n->value;
912
913 }
914
915 n = nvp_value2name(nvp_ftdi_jtag_modes, ftdi_jtag_mode);
916 command_print(CMD, "ftdi samples TDO on %s edge of TCK", n->name);
917
918 return ERROR_OK;
919 }
920
921 static const struct command_registration ftdi_subcommand_handlers[] = {
922 {
923 .name = "device_desc",
924 .handler = &ftdi_handle_device_desc_command,
925 .mode = COMMAND_CONFIG,
926 .help = "set the USB device description of the FTDI device",
927 .usage = "description_string",
928 },
929 {
930 .name = "channel",
931 .handler = &ftdi_handle_channel_command,
932 .mode = COMMAND_CONFIG,
933 .help = "set the channel of the FTDI device that is used as JTAG",
934 .usage = "(0-3)",
935 },
936 {
937 .name = "layout_init",
938 .handler = &ftdi_handle_layout_init_command,
939 .mode = COMMAND_CONFIG,
940 .help = "initialize the FTDI GPIO signals used "
941 "to control output-enables and reset signals",
942 .usage = "data direction",
943 },
944 {
945 .name = "layout_signal",
946 .handler = &ftdi_handle_layout_signal_command,
947 .mode = COMMAND_ANY,
948 .help = "define a signal controlled by one or more FTDI GPIO as data "
949 "and/or output enable",
950 .usage = "name [-data mask|-ndata mask] [-oe mask|-noe mask] [-alias|-nalias name]",
951 },
952 {
953 .name = "set_signal",
954 .handler = &ftdi_handle_set_signal_command,
955 .mode = COMMAND_EXEC,
956 .help = "control a layout-specific signal",
957 .usage = "name (1|0|z)",
958 },
959 {
960 .name = "get_signal",
961 .handler = &ftdi_handle_get_signal_command,
962 .mode = COMMAND_EXEC,
963 .help = "read the value of a layout-specific signal",
964 .usage = "name",
965 },
966 {
967 .name = "vid_pid",
968 .handler = &ftdi_handle_vid_pid_command,
969 .mode = COMMAND_CONFIG,
970 .help = "the vendor ID and product ID of the FTDI device",
971 .usage = "(vid pid)*",
972 },
973 {
974 .name = "tdo_sample_edge",
975 .handler = &ftdi_handle_tdo_sample_edge_command,
976 .mode = COMMAND_ANY,
977 .help = "set which TCK clock edge is used for sampling TDO "
978 "- default is rising-edge (Setting to falling-edge may "
979 "allow signalling speed increase)",
980 .usage = "(rising|falling)",
981 },
982 COMMAND_REGISTRATION_DONE
983 };
984
985 static const struct command_registration ftdi_command_handlers[] = {
986 {
987 .name = "ftdi",
988 .mode = COMMAND_ANY,
989 .help = "perform ftdi management",
990 .chain = ftdi_subcommand_handlers,
991 .usage = "",
992 },
993 COMMAND_REGISTRATION_DONE
994 };
995
996 static int create_default_signal(const char *name, uint16_t data_mask)
997 {
998 struct signal *sig = create_signal(name);
999 if (!sig) {
1000 LOG_ERROR("failed to create signal %s", name);
1001 return ERROR_FAIL;
1002 }
1003 sig->invert_data = false;
1004 sig->data_mask = data_mask;
1005 sig->invert_oe = false;
1006 sig->oe_mask = 0;
1007
1008 return ERROR_OK;
1009 }
1010
1011 static int create_signals(void)
1012 {
1013 if (create_default_signal("TCK", 0x01) != ERROR_OK)
1014 return ERROR_FAIL;
1015 if (create_default_signal("TDI", 0x02) != ERROR_OK)
1016 return ERROR_FAIL;
1017 if (create_default_signal("TDO", 0x04) != ERROR_OK)
1018 return ERROR_FAIL;
1019 if (create_default_signal("TMS", 0x08) != ERROR_OK)
1020 return ERROR_FAIL;
1021 return ERROR_OK;
1022 }
1023
1024 static int ftdi_swd_init(void)
1025 {
1026 LOG_INFO("FTDI SWD mode enabled");
1027 swd_mode = true;
1028
1029 if (create_signals() != ERROR_OK)
1030 return ERROR_FAIL;
1031
1032 swd_cmd_queue_alloced = 10;
1033 swd_cmd_queue = malloc(swd_cmd_queue_alloced * sizeof(*swd_cmd_queue));
1034
1035 return swd_cmd_queue ? ERROR_OK : ERROR_FAIL;
1036 }
1037
1038 static void ftdi_swd_swdio_en(bool enable)
1039 {
1040 struct signal *oe = find_signal_by_name("SWDIO_OE");
1041 if (oe) {
1042 if (oe->data_mask)
1043 ftdi_set_signal(oe, enable ? '1' : '0');
1044 else {
1045 /* Sets TDI/DO pin to input during rx when both pins are connected
1046 to SWDIO */
1047 if (enable)
1048 direction |= jtag_direction_init & 0x0002U;
1049 else
1050 direction &= ~0x0002U;
1051 mpsse_set_data_bits_low_byte(mpsse_ctx, output & 0xff, direction & 0xff);
1052 }
1053 }
1054 }
1055
1056 /**
1057 * Flush the MPSSE queue and process the SWD transaction queue
1058 * @return
1059 */
1060 static int ftdi_swd_run_queue(void)
1061 {
1062 LOG_DEBUG_IO("Executing %zu queued transactions", swd_cmd_queue_length);
1063 int retval;
1064 struct signal *led = find_signal_by_name("LED");
1065
1066 if (queued_retval != ERROR_OK) {
1067 LOG_DEBUG_IO("Skipping due to previous errors: %d", queued_retval);
1068 goto skip;
1069 }
1070
1071 /* A transaction must be followed by another transaction or at least 8 idle cycles to
1072 * ensure that data is clocked through the AP. */
1073 mpsse_clock_data_out(mpsse_ctx, NULL, 0, 8, SWD_MODE);
1074
1075 /* Terminate the "blink", if the current layout has that feature */
1076 if (led)
1077 ftdi_set_signal(led, '0');
1078
1079 queued_retval = mpsse_flush(mpsse_ctx);
1080 if (queued_retval != ERROR_OK) {
1081 LOG_ERROR("MPSSE failed");
1082 goto skip;
1083 }
1084
1085 for (size_t i = 0; i < swd_cmd_queue_length; i++) {
1086 int ack = buf_get_u32(swd_cmd_queue[i].trn_ack_data_parity_trn, 1, 3);
1087
1088 /* Devices do not reply to DP_TARGETSEL write cmd, ignore received ack */
1089 bool check_ack = swd_cmd_returns_ack(swd_cmd_queue[i].cmd);
1090
1091 LOG_CUSTOM_LEVEL((check_ack && ack != SWD_ACK_OK) ? LOG_LVL_DEBUG : LOG_LVL_DEBUG_IO,
1092 "%s%s %s %s reg %X = %08" PRIx32,
1093 check_ack ? "" : "ack ignored ",
1094 ack == SWD_ACK_OK ? "OK" : ack == SWD_ACK_WAIT ? "WAIT" : ack == SWD_ACK_FAULT ? "FAULT" : "JUNK",
1095 swd_cmd_queue[i].cmd & SWD_CMD_APNDP ? "AP" : "DP",
1096 swd_cmd_queue[i].cmd & SWD_CMD_RNW ? "read" : "write",
1097 (swd_cmd_queue[i].cmd & SWD_CMD_A32) >> 1,
1098 buf_get_u32(swd_cmd_queue[i].trn_ack_data_parity_trn,
1099 1 + 3 + (swd_cmd_queue[i].cmd & SWD_CMD_RNW ? 0 : 1), 32));
1100
1101 if (ack != SWD_ACK_OK && check_ack) {
1102 queued_retval = swd_ack_to_error_code(ack);
1103 goto skip;
1104
1105 } else if (swd_cmd_queue[i].cmd & SWD_CMD_RNW) {
1106 uint32_t data = buf_get_u32(swd_cmd_queue[i].trn_ack_data_parity_trn, 1 + 3, 32);
1107 int parity = buf_get_u32(swd_cmd_queue[i].trn_ack_data_parity_trn, 1 + 3 + 32, 1);
1108
1109 if (parity != parity_u32(data)) {
1110 LOG_ERROR("SWD Read data parity mismatch");
1111 queued_retval = ERROR_FAIL;
1112 goto skip;
1113 }
1114
1115 if (swd_cmd_queue[i].dst)
1116 *swd_cmd_queue[i].dst = data;
1117 }
1118 }
1119
1120 skip:
1121 swd_cmd_queue_length = 0;
1122 retval = queued_retval;
1123 queued_retval = ERROR_OK;
1124
1125 /* Queue a new "blink" */
1126 if (led && retval == ERROR_OK)
1127 ftdi_set_signal(led, '1');
1128
1129 return retval;
1130 }
1131
1132 static void ftdi_swd_queue_cmd(uint8_t cmd, uint32_t *dst, uint32_t data, uint32_t ap_delay_clk)
1133 {
1134 if (swd_cmd_queue_length >= swd_cmd_queue_alloced) {
1135 /* Not enough room in the queue. Run the queue and increase its size for next time.
1136 * Note that it's not possible to avoid running the queue here, because mpsse contains
1137 * pointers into the queue which may be invalid after the realloc. */
1138 queued_retval = ftdi_swd_run_queue();
1139 struct swd_cmd_queue_entry *q = realloc(swd_cmd_queue, swd_cmd_queue_alloced * 2 * sizeof(*swd_cmd_queue));
1140 if (q) {
1141 swd_cmd_queue = q;
1142 swd_cmd_queue_alloced *= 2;
1143 LOG_DEBUG("Increased SWD command queue to %zu elements", swd_cmd_queue_alloced);
1144 }
1145 }
1146
1147 if (queued_retval != ERROR_OK)
1148 return;
1149
1150 size_t i = swd_cmd_queue_length++;
1151 swd_cmd_queue[i].cmd = cmd | SWD_CMD_START | SWD_CMD_PARK;
1152
1153 mpsse_clock_data_out(mpsse_ctx, &swd_cmd_queue[i].cmd, 0, 8, SWD_MODE);
1154
1155 if (swd_cmd_queue[i].cmd & SWD_CMD_RNW) {
1156 /* Queue a read transaction */
1157 swd_cmd_queue[i].dst = dst;
1158
1159 ftdi_swd_swdio_en(false);
1160 mpsse_clock_data_in(mpsse_ctx, swd_cmd_queue[i].trn_ack_data_parity_trn,
1161 0, 1 + 3 + 32 + 1 + 1, SWD_MODE);
1162 ftdi_swd_swdio_en(true);
1163 } else {
1164 /* Queue a write transaction */
1165 ftdi_swd_swdio_en(false);
1166
1167 mpsse_clock_data_in(mpsse_ctx, swd_cmd_queue[i].trn_ack_data_parity_trn,
1168 0, 1 + 3 + 1, SWD_MODE);
1169
1170 ftdi_swd_swdio_en(true);
1171
1172 buf_set_u32(swd_cmd_queue[i].trn_ack_data_parity_trn, 1 + 3 + 1, 32, data);
1173 buf_set_u32(swd_cmd_queue[i].trn_ack_data_parity_trn, 1 + 3 + 1 + 32, 1, parity_u32(data));
1174
1175 mpsse_clock_data_out(mpsse_ctx, swd_cmd_queue[i].trn_ack_data_parity_trn,
1176 1 + 3 + 1, 32 + 1, SWD_MODE);
1177 }
1178
1179 /* Insert idle cycles after AP accesses to avoid WAIT */
1180 if (cmd & SWD_CMD_APNDP)
1181 mpsse_clock_data_out(mpsse_ctx, NULL, 0, ap_delay_clk, SWD_MODE);
1182
1183 }
1184
1185 static void ftdi_swd_read_reg(uint8_t cmd, uint32_t *value, uint32_t ap_delay_clk)
1186 {
1187 assert(cmd & SWD_CMD_RNW);
1188 ftdi_swd_queue_cmd(cmd, value, 0, ap_delay_clk);
1189 }
1190
1191 static void ftdi_swd_write_reg(uint8_t cmd, uint32_t value, uint32_t ap_delay_clk)
1192 {
1193 assert(!(cmd & SWD_CMD_RNW));
1194 ftdi_swd_queue_cmd(cmd, NULL, value, ap_delay_clk);
1195 }
1196
1197 static int ftdi_swd_switch_seq(enum swd_special_seq seq)
1198 {
1199 switch (seq) {
1200 case LINE_RESET:
1201 LOG_DEBUG("SWD line reset");
1202 ftdi_swd_swdio_en(true);
1203 mpsse_clock_data_out(mpsse_ctx, swd_seq_line_reset, 0, swd_seq_line_reset_len, SWD_MODE);
1204 break;
1205 case JTAG_TO_SWD:
1206 LOG_DEBUG("JTAG-to-SWD");
1207 ftdi_swd_swdio_en(true);
1208 mpsse_clock_data_out(mpsse_ctx, swd_seq_jtag_to_swd, 0, swd_seq_jtag_to_swd_len, SWD_MODE);
1209 break;
1210 case JTAG_TO_DORMANT:
1211 LOG_DEBUG("JTAG-to-DORMANT");
1212 ftdi_swd_swdio_en(true);
1213 mpsse_clock_data_out(mpsse_ctx, swd_seq_jtag_to_dormant, 0, swd_seq_jtag_to_dormant_len, SWD_MODE);
1214 break;
1215 case SWD_TO_JTAG:
1216 LOG_DEBUG("SWD-to-JTAG");
1217 ftdi_swd_swdio_en(true);
1218 mpsse_clock_data_out(mpsse_ctx, swd_seq_swd_to_jtag, 0, swd_seq_swd_to_jtag_len, SWD_MODE);
1219 break;
1220 case SWD_TO_DORMANT:
1221 LOG_DEBUG("SWD-to-DORMANT");
1222 ftdi_swd_swdio_en(true);
1223 mpsse_clock_data_out(mpsse_ctx, swd_seq_swd_to_dormant, 0, swd_seq_swd_to_dormant_len, SWD_MODE);
1224 break;
1225 case DORMANT_TO_SWD:
1226 LOG_DEBUG("DORMANT-to-SWD");
1227 ftdi_swd_swdio_en(true);
1228 mpsse_clock_data_out(mpsse_ctx, swd_seq_dormant_to_swd, 0, swd_seq_dormant_to_swd_len, SWD_MODE);
1229 break;
1230 case DORMANT_TO_JTAG:
1231 LOG_DEBUG("DORMANT-to-JTAG");
1232 ftdi_swd_swdio_en(true);
1233 mpsse_clock_data_out(mpsse_ctx, swd_seq_dormant_to_jtag, 0, swd_seq_dormant_to_jtag_len, SWD_MODE);
1234 break;
1235 default:
1236 LOG_ERROR("Sequence %d not supported", seq);
1237 return ERROR_FAIL;
1238 }
1239
1240 return ERROR_OK;
1241 }
1242
1243 static const struct swd_driver ftdi_swd = {
1244 .init = ftdi_swd_init,
1245 .switch_seq = ftdi_swd_switch_seq,
1246 .read_reg = ftdi_swd_read_reg,
1247 .write_reg = ftdi_swd_write_reg,
1248 .run = ftdi_swd_run_queue,
1249 };
1250
1251 static const char * const ftdi_transports[] = { "jtag", "swd", NULL };
1252
1253 static struct jtag_interface ftdi_interface = {
1254 .supported = DEBUG_CAP_TMS_SEQ,
1255 .execute_queue = ftdi_execute_queue,
1256 };
1257
1258 struct adapter_driver ftdi_adapter_driver = {
1259 .name = "ftdi",
1260 .transports = ftdi_transports,
1261 .commands = ftdi_command_handlers,
1262
1263 .init = ftdi_initialize,
1264 .quit = ftdi_quit,
1265 .reset = ftdi_reset,
1266 .speed = ftdi_speed,
1267 .khz = ftdi_khz,
1268 .speed_div = ftdi_speed_div,
1269
1270 .jtag_ops = &ftdi_interface,
1271 .swd_ops = &ftdi_swd,
1272 };
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