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swim: add new transport
[openocd.git] / src / jtag / drivers / stlink_usb.c
1 /***************************************************************************
2 * SWIM contributions by Ake Rehnman *
3 * Copyright (C) 2017 Ake Rehnman *
4 * ake.rehnman(at)gmail.com *
5 * *
6 * Copyright (C) 2011-2012 by Mathias Kuester *
7 * Mathias Kuester <kesmtp@freenet.de> *
8 * *
9 * Copyright (C) 2012 by Spencer Oliver *
10 * spen@spen-soft.co.uk *
11 * *
12 * This code is based on https://github.com/texane/stlink *
13 * *
14 * This program is free software; you can redistribute it and/or modify *
15 * it under the terms of the GNU General Public License as published by *
16 * the Free Software Foundation; either version 2 of the License, or *
17 * (at your option) any later version. *
18 * *
19 * This program is distributed in the hope that it will be useful, *
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
22 * GNU General Public License for more details. *
23 * *
24 * You should have received a copy of the GNU General Public License *
25 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
26 ***************************************************************************/
27
28 #ifdef HAVE_CONFIG_H
29 #include "config.h"
30 #endif
31
32 /* project specific includes */
33 #include <helper/binarybuffer.h>
34 #include <helper/bits.h>
35 #include <jtag/interface.h>
36 #include <jtag/hla/hla_layout.h>
37 #include <jtag/hla/hla_transport.h>
38 #include <jtag/hla/hla_interface.h>
39 #include <jtag/swim.h>
40 #include <target/target.h>
41 #include <transport/transport.h>
42
43 #include <target/cortex_m.h>
44
45 #include "libusb_helper.h"
46
47 #ifdef HAVE_LIBUSB1
48 #define USE_LIBUSB_ASYNCIO
49 #endif
50
51 #define STLINK_SERIAL_LEN 24
52
53 #define ENDPOINT_IN 0x80
54 #define ENDPOINT_OUT 0x00
55
56 #define STLINK_WRITE_TIMEOUT 1000
57 #define STLINK_READ_TIMEOUT 1000
58
59 #define STLINK_RX_EP (1|ENDPOINT_IN)
60 #define STLINK_TX_EP (2|ENDPOINT_OUT)
61 #define STLINK_TRACE_EP (3|ENDPOINT_IN)
62
63 #define STLINK_V2_1_TX_EP (1|ENDPOINT_OUT)
64 #define STLINK_V2_1_TRACE_EP (2|ENDPOINT_IN)
65
66 #define STLINK_SG_SIZE (31)
67 #define STLINK_DATA_SIZE (4096)
68 #define STLINK_CMD_SIZE_V2 (16)
69 #define STLINK_CMD_SIZE_V1 (10)
70
71 #define STLINK_V1_PID (0x3744)
72 #define STLINK_V2_PID (0x3748)
73 #define STLINK_V2_1_PID (0x374B)
74 #define STLINK_V2_1_NO_MSD_PID (0x3752)
75 #define STLINK_V3_USBLOADER_PID (0x374D)
76 #define STLINK_V3E_PID (0x374E)
77 #define STLINK_V3S_PID (0x374F)
78 #define STLINK_V3_2VCP_PID (0x3753)
79
80 /*
81 * ST-Link/V1, ST-Link/V2 and ST-Link/V2.1 are full-speed USB devices and
82 * this limits the bulk packet size and the 8bit read/writes to max 64 bytes.
83 * STLINK-V3 is a high speed USB 2.0 and the limit is 512 bytes from FW V3J6.
84 */
85 #define STLINK_MAX_RW8 (64)
86 #define STLINKV3_MAX_RW8 (512)
87
88 /* "WAIT" responses will be retried (with exponential backoff) at
89 * most this many times before failing to caller.
90 */
91 #define MAX_WAIT_RETRIES 8
92
93 enum stlink_jtag_api_version {
94 STLINK_JTAG_API_V1 = 1,
95 STLINK_JTAG_API_V2,
96 STLINK_JTAG_API_V3,
97 };
98
99 enum stlink_mode {
100 STLINK_MODE_UNKNOWN = 0,
101 STLINK_MODE_DFU,
102 STLINK_MODE_MASS,
103 STLINK_MODE_DEBUG_JTAG,
104 STLINK_MODE_DEBUG_SWD,
105 STLINK_MODE_DEBUG_SWIM
106 };
107
108 /** */
109 struct stlink_usb_version {
110 /** */
111 int stlink;
112 /** */
113 int jtag;
114 /** */
115 int swim;
116 /** jtag api version supported */
117 enum stlink_jtag_api_version jtag_api;
118 /** one bit for each feature supported. See macros STLINK_F_* */
119 uint32_t flags;
120 };
121
122 /** */
123 struct stlink_usb_handle_s {
124 /** */
125 struct libusb_device_handle *fd;
126 /** */
127 struct libusb_transfer *trans;
128 /** */
129 uint8_t rx_ep;
130 /** */
131 uint8_t tx_ep;
132 /** */
133 uint8_t trace_ep;
134 /** */
135 uint8_t cmdbuf[STLINK_SG_SIZE];
136 /** */
137 uint8_t cmdidx;
138 /** */
139 uint8_t direction;
140 /** */
141 uint8_t databuf[STLINK_DATA_SIZE];
142 /** */
143 uint32_t max_mem_packet;
144 /** */
145 enum stlink_mode st_mode;
146 /** */
147 struct stlink_usb_version version;
148 /** */
149 uint16_t vid;
150 /** */
151 uint16_t pid;
152 /** */
153 struct {
154 /** whether SWO tracing is enabled or not */
155 bool enabled;
156 /** trace module source clock */
157 uint32_t source_hz;
158 } trace;
159 /** reconnect is needed next time we try to query the
160 * status */
161 bool reconnect_pending;
162 };
163
164 #define STLINK_SWIM_ERR_OK 0x00
165 #define STLINK_SWIM_BUSY 0x01
166 #define STLINK_DEBUG_ERR_OK 0x80
167 #define STLINK_DEBUG_ERR_FAULT 0x81
168 #define STLINK_SWD_AP_WAIT 0x10
169 #define STLINK_SWD_AP_FAULT 0x11
170 #define STLINK_SWD_AP_ERROR 0x12
171 #define STLINK_SWD_AP_PARITY_ERROR 0x13
172 #define STLINK_JTAG_GET_IDCODE_ERROR 0x09
173 #define STLINK_JTAG_WRITE_ERROR 0x0c
174 #define STLINK_JTAG_WRITE_VERIF_ERROR 0x0d
175 #define STLINK_SWD_DP_WAIT 0x14
176 #define STLINK_SWD_DP_FAULT 0x15
177 #define STLINK_SWD_DP_ERROR 0x16
178 #define STLINK_SWD_DP_PARITY_ERROR 0x17
179
180 #define STLINK_SWD_AP_WDATA_ERROR 0x18
181 #define STLINK_SWD_AP_STICKY_ERROR 0x19
182 #define STLINK_SWD_AP_STICKYORUN_ERROR 0x1a
183
184 #define STLINK_BAD_AP_ERROR 0x1d
185
186 #define STLINK_CORE_RUNNING 0x80
187 #define STLINK_CORE_HALTED 0x81
188 #define STLINK_CORE_STAT_UNKNOWN -1
189
190 #define STLINK_GET_VERSION 0xF1
191 #define STLINK_DEBUG_COMMAND 0xF2
192 #define STLINK_DFU_COMMAND 0xF3
193 #define STLINK_SWIM_COMMAND 0xF4
194 #define STLINK_GET_CURRENT_MODE 0xF5
195 #define STLINK_GET_TARGET_VOLTAGE 0xF7
196
197 #define STLINK_DEV_DFU_MODE 0x00
198 #define STLINK_DEV_MASS_MODE 0x01
199 #define STLINK_DEV_DEBUG_MODE 0x02
200 #define STLINK_DEV_SWIM_MODE 0x03
201 #define STLINK_DEV_BOOTLOADER_MODE 0x04
202 #define STLINK_DEV_UNKNOWN_MODE -1
203
204 #define STLINK_DFU_EXIT 0x07
205
206 /*
207 STLINK_SWIM_ENTER_SEQ
208 1.3ms low then 750Hz then 1.5kHz
209
210 STLINK_SWIM_GEN_RST
211 STM8 DM pulls reset pin low 50us
212
213 STLINK_SWIM_SPEED
214 uint8_t (0=low|1=high)
215
216 STLINK_SWIM_WRITEMEM
217 uint16_t length
218 uint32_t address
219
220 STLINK_SWIM_RESET
221 send syncronization seq (16us low, response 64 clocks low)
222 */
223 #define STLINK_SWIM_ENTER 0x00
224 #define STLINK_SWIM_EXIT 0x01
225 #define STLINK_SWIM_READ_CAP 0x02
226 #define STLINK_SWIM_SPEED 0x03
227 #define STLINK_SWIM_ENTER_SEQ 0x04
228 #define STLINK_SWIM_GEN_RST 0x05
229 #define STLINK_SWIM_RESET 0x06
230 #define STLINK_SWIM_ASSERT_RESET 0x07
231 #define STLINK_SWIM_DEASSERT_RESET 0x08
232 #define STLINK_SWIM_READSTATUS 0x09
233 #define STLINK_SWIM_WRITEMEM 0x0a
234 #define STLINK_SWIM_READMEM 0x0b
235 #define STLINK_SWIM_READBUF 0x0c
236
237 #define STLINK_DEBUG_GETSTATUS 0x01
238 #define STLINK_DEBUG_FORCEDEBUG 0x02
239 #define STLINK_DEBUG_APIV1_RESETSYS 0x03
240 #define STLINK_DEBUG_APIV1_READALLREGS 0x04
241 #define STLINK_DEBUG_APIV1_READREG 0x05
242 #define STLINK_DEBUG_APIV1_WRITEREG 0x06
243 #define STLINK_DEBUG_READMEM_32BIT 0x07
244 #define STLINK_DEBUG_WRITEMEM_32BIT 0x08
245 #define STLINK_DEBUG_RUNCORE 0x09
246 #define STLINK_DEBUG_STEPCORE 0x0a
247 #define STLINK_DEBUG_APIV1_SETFP 0x0b
248 #define STLINK_DEBUG_READMEM_8BIT 0x0c
249 #define STLINK_DEBUG_WRITEMEM_8BIT 0x0d
250 #define STLINK_DEBUG_APIV1_CLEARFP 0x0e
251 #define STLINK_DEBUG_APIV1_WRITEDEBUGREG 0x0f
252 #define STLINK_DEBUG_APIV1_SETWATCHPOINT 0x10
253
254 #define STLINK_DEBUG_ENTER_JTAG_RESET 0x00
255 #define STLINK_DEBUG_ENTER_SWD_NO_RESET 0xa3
256 #define STLINK_DEBUG_ENTER_JTAG_NO_RESET 0xa4
257
258 #define STLINK_DEBUG_APIV1_ENTER 0x20
259 #define STLINK_DEBUG_EXIT 0x21
260 #define STLINK_DEBUG_READCOREID 0x22
261
262 #define STLINK_DEBUG_APIV2_ENTER 0x30
263 #define STLINK_DEBUG_APIV2_READ_IDCODES 0x31
264 #define STLINK_DEBUG_APIV2_RESETSYS 0x32
265 #define STLINK_DEBUG_APIV2_READREG 0x33
266 #define STLINK_DEBUG_APIV2_WRITEREG 0x34
267 #define STLINK_DEBUG_APIV2_WRITEDEBUGREG 0x35
268 #define STLINK_DEBUG_APIV2_READDEBUGREG 0x36
269
270 #define STLINK_DEBUG_APIV2_READALLREGS 0x3A
271 #define STLINK_DEBUG_APIV2_GETLASTRWSTATUS 0x3B
272 #define STLINK_DEBUG_APIV2_DRIVE_NRST 0x3C
273
274 #define STLINK_DEBUG_APIV2_GETLASTRWSTATUS2 0x3E
275
276 #define STLINK_DEBUG_APIV2_START_TRACE_RX 0x40
277 #define STLINK_DEBUG_APIV2_STOP_TRACE_RX 0x41
278 #define STLINK_DEBUG_APIV2_GET_TRACE_NB 0x42
279 #define STLINK_DEBUG_APIV2_SWD_SET_FREQ 0x43
280 #define STLINK_DEBUG_APIV2_JTAG_SET_FREQ 0x44
281 #define STLINK_DEBUG_APIV2_READ_DAP_REG 0x45
282 #define STLINK_DEBUG_APIV2_WRITE_DAP_REG 0x46
283 #define STLINK_DEBUG_APIV2_READMEM_16BIT 0x47
284 #define STLINK_DEBUG_APIV2_WRITEMEM_16BIT 0x48
285
286 #define STLINK_DEBUG_APIV2_INIT_AP 0x4B
287 #define STLINK_DEBUG_APIV2_CLOSE_AP_DBG 0x4C
288
289 #define STLINK_APIV3_SET_COM_FREQ 0x61
290 #define STLINK_APIV3_GET_COM_FREQ 0x62
291
292 #define STLINK_APIV3_GET_VERSION_EX 0xFB
293
294 #define STLINK_DEBUG_APIV2_DRIVE_NRST_LOW 0x00
295 #define STLINK_DEBUG_APIV2_DRIVE_NRST_HIGH 0x01
296 #define STLINK_DEBUG_APIV2_DRIVE_NRST_PULSE 0x02
297
298 #define STLINK_DEBUG_PORT_ACCESS 0xffff
299
300 #define STLINK_TRACE_SIZE 4096
301 #define STLINK_TRACE_MAX_HZ 2000000
302
303 #define STLINK_V3_MAX_FREQ_NB 10
304
305 #define REQUEST_SENSE 0x03
306 #define REQUEST_SENSE_LENGTH 18
307
308 /*
309 * Map the relevant features, quirks and workaround for specific firmware
310 * version of stlink
311 */
312 #define STLINK_F_HAS_TRACE BIT(0)
313 #define STLINK_F_HAS_SWD_SET_FREQ BIT(1)
314 #define STLINK_F_HAS_JTAG_SET_FREQ BIT(2)
315 #define STLINK_F_HAS_MEM_16BIT BIT(3)
316 #define STLINK_F_HAS_GETLASTRWSTATUS2 BIT(4)
317 #define STLINK_F_HAS_DAP_REG BIT(5)
318 #define STLINK_F_QUIRK_JTAG_DP_READ BIT(6)
319 #define STLINK_F_HAS_AP_INIT BIT(7)
320 #define STLINK_F_HAS_DPBANKSEL BIT(8)
321 #define STLINK_F_HAS_RW8_512BYTES BIT(9)
322
323 /* aliases */
324 #define STLINK_F_HAS_TARGET_VOLT STLINK_F_HAS_TRACE
325
326 struct speed_map {
327 int speed;
328 int speed_divisor;
329 };
330
331 /* SWD clock speed */
332 static const struct speed_map stlink_khz_to_speed_map_swd[] = {
333 {4000, 0},
334 {1800, 1}, /* default */
335 {1200, 2},
336 {950, 3},
337 {480, 7},
338 {240, 15},
339 {125, 31},
340 {100, 40},
341 {50, 79},
342 {25, 158},
343 {15, 265},
344 {5, 798}
345 };
346
347 /* JTAG clock speed */
348 static const struct speed_map stlink_khz_to_speed_map_jtag[] = {
349 {9000, 4},
350 {4500, 8},
351 {2250, 16},
352 {1125, 32}, /* default */
353 {562, 64},
354 {281, 128},
355 {140, 256}
356 };
357
358 static void stlink_usb_init_buffer(void *handle, uint8_t direction, uint32_t size);
359 static int stlink_swim_status(void *handle);
360 void stlink_dump_speed_map(const struct speed_map *map, unsigned int map_size);
361 static int stlink_get_com_freq(void *handle, bool is_jtag, struct speed_map *map);
362 static int stlink_speed(void *handle, int khz, bool query);
363
364 /** */
365 static unsigned int stlink_usb_block(void *handle)
366 {
367 struct stlink_usb_handle_s *h = handle;
368
369 assert(handle != NULL);
370
371 if (h->version.flags & STLINK_F_HAS_RW8_512BYTES)
372 return STLINKV3_MAX_RW8;
373 else
374 return STLINK_MAX_RW8;
375 }
376
377
378
379 #ifdef USE_LIBUSB_ASYNCIO
380
381 static LIBUSB_CALL void sync_transfer_cb(struct libusb_transfer *transfer)
382 {
383 int *completed = transfer->user_data;
384 *completed = 1;
385 /* caller interprets result and frees transfer */
386 }
387
388
389 static void sync_transfer_wait_for_completion(struct libusb_transfer *transfer)
390 {
391 int r, *completed = transfer->user_data;
392
393 /* Assuming a single libusb context exists. There no existing interface into this
394 * module to pass a libusb context.
395 */
396 struct libusb_context *ctx = NULL;
397
398 while (!*completed) {
399 r = libusb_handle_events_completed(ctx, completed);
400 if (r < 0) {
401 if (r == LIBUSB_ERROR_INTERRUPTED)
402 continue;
403 libusb_cancel_transfer(transfer);
404 continue;
405 }
406 }
407 }
408
409
410 static int transfer_error_status(const struct libusb_transfer *transfer)
411 {
412 int r = 0;
413
414 switch (transfer->status) {
415 case LIBUSB_TRANSFER_COMPLETED:
416 r = 0;
417 break;
418 case LIBUSB_TRANSFER_TIMED_OUT:
419 r = LIBUSB_ERROR_TIMEOUT;
420 break;
421 case LIBUSB_TRANSFER_STALL:
422 r = LIBUSB_ERROR_PIPE;
423 break;
424 case LIBUSB_TRANSFER_OVERFLOW:
425 r = LIBUSB_ERROR_OVERFLOW;
426 break;
427 case LIBUSB_TRANSFER_NO_DEVICE:
428 r = LIBUSB_ERROR_NO_DEVICE;
429 break;
430 case LIBUSB_TRANSFER_ERROR:
431 case LIBUSB_TRANSFER_CANCELLED:
432 r = LIBUSB_ERROR_IO;
433 break;
434 default:
435 r = LIBUSB_ERROR_OTHER;
436 break;
437 }
438
439 return r;
440 }
441
442 struct jtag_xfer {
443 int ep;
444 uint8_t *buf;
445 size_t size;
446 /* Internal */
447 int retval;
448 int completed;
449 size_t transfer_size;
450 struct libusb_transfer *transfer;
451 };
452
453 static int jtag_libusb_bulk_transfer_n(
454 struct libusb_device_handle *dev_handle,
455 struct jtag_xfer *transfers,
456 size_t n_transfers,
457 int timeout)
458 {
459 int retval = 0;
460 int returnval = ERROR_OK;
461
462
463 for (size_t i = 0; i < n_transfers; ++i) {
464 transfers[i].retval = 0;
465 transfers[i].completed = 0;
466 transfers[i].transfer_size = 0;
467 transfers[i].transfer = libusb_alloc_transfer(0);
468
469 if (transfers[i].transfer == NULL) {
470 for (size_t j = 0; j < i; ++j)
471 libusb_free_transfer(transfers[j].transfer);
472
473 LOG_DEBUG("ERROR, failed to alloc usb transfers");
474 for (size_t k = 0; k < n_transfers; ++k)
475 transfers[k].retval = LIBUSB_ERROR_NO_MEM;
476 return ERROR_FAIL;
477 }
478 }
479
480 for (size_t i = 0; i < n_transfers; ++i) {
481 libusb_fill_bulk_transfer(
482 transfers[i].transfer,
483 dev_handle,
484 transfers[i].ep, transfers[i].buf, transfers[i].size,
485 sync_transfer_cb, &transfers[i].completed, timeout);
486 transfers[i].transfer->type = LIBUSB_TRANSFER_TYPE_BULK;
487
488 retval = libusb_submit_transfer(transfers[i].transfer);
489 if (retval < 0) {
490 LOG_DEBUG("ERROR, failed to submit transfer %zu, error %d", i, retval);
491
492 /* Probably no point continuing to submit transfers once a submission fails.
493 * As a result, tag all remaining transfers as errors.
494 */
495 for (size_t j = i; j < n_transfers; ++j)
496 transfers[j].retval = retval;
497
498 returnval = ERROR_FAIL;
499 break;
500 }
501 }
502
503 /* Wait for every submitted USB transfer to complete.
504 */
505 for (size_t i = 0; i < n_transfers; ++i) {
506 if (transfers[i].retval == 0) {
507 sync_transfer_wait_for_completion(transfers[i].transfer);
508
509 retval = transfer_error_status(transfers[i].transfer);
510 if (retval) {
511 returnval = ERROR_FAIL;
512 transfers[i].retval = retval;
513 LOG_DEBUG("ERROR, transfer %zu failed, error %d", i, retval);
514 } else {
515 /* Assuming actual_length is only valid if there is no transfer error.
516 */
517 transfers[i].transfer_size = transfers[i].transfer->actual_length;
518 }
519 }
520
521 libusb_free_transfer(transfers[i].transfer);
522 transfers[i].transfer = NULL;
523 }
524
525 return returnval;
526 }
527
528 #endif
529
530
531 /** */
532 static int stlink_usb_xfer_v1_get_status(void *handle)
533 {
534 struct stlink_usb_handle_s *h = handle;
535 int tr, ret;
536
537 assert(handle != NULL);
538
539 /* read status */
540 memset(h->cmdbuf, 0, STLINK_SG_SIZE);
541
542 ret = jtag_libusb_bulk_read(h->fd, h->rx_ep, (char *)h->cmdbuf, 13,
543 STLINK_READ_TIMEOUT, &tr);
544 if (ret || tr != 13)
545 return ERROR_FAIL;
546
547 uint32_t t1;
548
549 t1 = buf_get_u32(h->cmdbuf, 0, 32);
550
551 /* check for USBS */
552 if (t1 != 0x53425355)
553 return ERROR_FAIL;
554 /*
555 * CSW status:
556 * 0 success
557 * 1 command failure
558 * 2 phase error
559 */
560 if (h->cmdbuf[12] != 0)
561 return ERROR_FAIL;
562
563 return ERROR_OK;
564 }
565
566 #ifdef USE_LIBUSB_ASYNCIO
567 static int stlink_usb_xfer_rw(void *handle, int cmdsize, const uint8_t *buf, int size)
568 {
569 struct stlink_usb_handle_s *h = handle;
570
571 assert(handle != NULL);
572
573 size_t n_transfers = 0;
574 struct jtag_xfer transfers[2];
575
576 memset(transfers, 0, sizeof(transfers));
577
578 transfers[0].ep = h->tx_ep;
579 transfers[0].buf = h->cmdbuf;
580 transfers[0].size = cmdsize;
581
582 ++n_transfers;
583
584 if (h->direction == h->tx_ep && size) {
585 transfers[1].ep = h->tx_ep;
586 transfers[1].buf = (uint8_t *)buf;
587 transfers[1].size = size;
588
589 ++n_transfers;
590 } else if (h->direction == h->rx_ep && size) {
591 transfers[1].ep = h->rx_ep;
592 transfers[1].buf = (uint8_t *)buf;
593 transfers[1].size = size;
594
595 ++n_transfers;
596 }
597
598 return jtag_libusb_bulk_transfer_n(
599 h->fd,
600 transfers,
601 n_transfers,
602 STLINK_WRITE_TIMEOUT);
603 }
604 #else
605 static int stlink_usb_xfer_rw(void *handle, int cmdsize, const uint8_t *buf, int size)
606 {
607 struct stlink_usb_handle_s *h = handle;
608 int tr, ret;
609
610 assert(handle != NULL);
611
612 ret = jtag_libusb_bulk_write(h->fd, h->tx_ep, (char *)h->cmdbuf,
613 cmdsize, STLINK_WRITE_TIMEOUT, &tr);
614 if (ret || tr != cmdsize)
615 return ERROR_FAIL;
616
617 if (h->direction == h->tx_ep && size) {
618 ret = jtag_libusb_bulk_write(h->fd, h->tx_ep, (char *)buf,
619 size, STLINK_WRITE_TIMEOUT, &tr);
620 if (ret || tr != size) {
621 LOG_DEBUG("bulk write failed");
622 return ERROR_FAIL;
623 }
624 } else if (h->direction == h->rx_ep && size) {
625 ret = jtag_libusb_bulk_read(h->fd, h->rx_ep, (char *)buf,
626 size, STLINK_READ_TIMEOUT, &tr);
627 if (ret || tr != size) {
628 LOG_DEBUG("bulk read failed");
629 return ERROR_FAIL;
630 }
631 }
632
633 return ERROR_OK;
634 }
635 #endif
636
637 /** */
638 static int stlink_usb_xfer_v1_get_sense(void *handle)
639 {
640 int res;
641 struct stlink_usb_handle_s *h = handle;
642
643 assert(handle != NULL);
644
645 stlink_usb_init_buffer(handle, h->rx_ep, 16);
646
647 h->cmdbuf[h->cmdidx++] = REQUEST_SENSE;
648 h->cmdbuf[h->cmdidx++] = 0;
649 h->cmdbuf[h->cmdidx++] = 0;
650 h->cmdbuf[h->cmdidx++] = 0;
651 h->cmdbuf[h->cmdidx++] = REQUEST_SENSE_LENGTH;
652
653 res = stlink_usb_xfer_rw(handle, REQUEST_SENSE_LENGTH, h->databuf, 16);
654
655 if (res != ERROR_OK)
656 return res;
657
658 if (stlink_usb_xfer_v1_get_status(handle) != ERROR_OK)
659 return ERROR_FAIL;
660
661 return ERROR_OK;
662 }
663
664 /*
665 transfers block in cmdbuf
666 <size> indicates number of bytes in the following
667 data phase.
668 Ignore the (eventual) error code in the received packet.
669 */
670 static int stlink_usb_xfer_noerrcheck(void *handle, const uint8_t *buf, int size)
671 {
672 int err, cmdsize = STLINK_CMD_SIZE_V2;
673 struct stlink_usb_handle_s *h = handle;
674
675 assert(handle != NULL);
676
677 if (h->version.stlink == 1) {
678 cmdsize = STLINK_SG_SIZE;
679 /* put length in bCBWCBLength */
680 h->cmdbuf[14] = h->cmdidx-15;
681 }
682
683 err = stlink_usb_xfer_rw(handle, cmdsize, buf, size);
684
685 if (err != ERROR_OK)
686 return err;
687
688 if (h->version.stlink == 1) {
689 if (stlink_usb_xfer_v1_get_status(handle) != ERROR_OK) {
690 /* check csw status */
691 if (h->cmdbuf[12] == 1) {
692 LOG_DEBUG("get sense");
693 if (stlink_usb_xfer_v1_get_sense(handle) != ERROR_OK)
694 return ERROR_FAIL;
695 }
696 return ERROR_FAIL;
697 }
698 }
699
700 return ERROR_OK;
701 }
702
703 /**
704 Converts an STLINK status code held in the first byte of a response
705 to an openocd error, logs any error/wait status as debug output.
706 */
707 static int stlink_usb_error_check(void *handle)
708 {
709 struct stlink_usb_handle_s *h = handle;
710
711 assert(handle != NULL);
712
713 if (h->st_mode == STLINK_MODE_DEBUG_SWIM) {
714 switch (h->databuf[0]) {
715 case STLINK_SWIM_ERR_OK:
716 return ERROR_OK;
717 case STLINK_SWIM_BUSY:
718 return ERROR_WAIT;
719 default:
720 LOG_DEBUG("unknown/unexpected STLINK status code 0x%x", h->databuf[0]);
721 return ERROR_FAIL;
722 }
723 }
724
725 /* TODO: no error checking yet on api V1 */
726 if (h->version.jtag_api == STLINK_JTAG_API_V1)
727 h->databuf[0] = STLINK_DEBUG_ERR_OK;
728
729 switch (h->databuf[0]) {
730 case STLINK_DEBUG_ERR_OK:
731 return ERROR_OK;
732 case STLINK_DEBUG_ERR_FAULT:
733 LOG_DEBUG("SWD fault response (0x%x)", STLINK_DEBUG_ERR_FAULT);
734 return ERROR_FAIL;
735 case STLINK_SWD_AP_WAIT:
736 LOG_DEBUG("wait status SWD_AP_WAIT (0x%x)", STLINK_SWD_AP_WAIT);
737 return ERROR_WAIT;
738 case STLINK_SWD_DP_WAIT:
739 LOG_DEBUG("wait status SWD_DP_WAIT (0x%x)", STLINK_SWD_DP_WAIT);
740 return ERROR_WAIT;
741 case STLINK_JTAG_GET_IDCODE_ERROR:
742 LOG_DEBUG("STLINK_JTAG_GET_IDCODE_ERROR");
743 return ERROR_FAIL;
744 case STLINK_JTAG_WRITE_ERROR:
745 LOG_DEBUG("Write error");
746 return ERROR_FAIL;
747 case STLINK_JTAG_WRITE_VERIF_ERROR:
748 LOG_DEBUG("Write verify error, ignoring");
749 return ERROR_OK;
750 case STLINK_SWD_AP_FAULT:
751 /* git://git.ac6.fr/openocd commit 657e3e885b9ee10
752 * returns ERROR_OK with the comment:
753 * Change in error status when reading outside RAM.
754 * This fix allows CDT plugin to visualize memory.
755 */
756 LOG_DEBUG("STLINK_SWD_AP_FAULT");
757 return ERROR_FAIL;
758 case STLINK_SWD_AP_ERROR:
759 LOG_DEBUG("STLINK_SWD_AP_ERROR");
760 return ERROR_FAIL;
761 case STLINK_SWD_AP_PARITY_ERROR:
762 LOG_DEBUG("STLINK_SWD_AP_PARITY_ERROR");
763 return ERROR_FAIL;
764 case STLINK_SWD_DP_FAULT:
765 LOG_DEBUG("STLINK_SWD_DP_FAULT");
766 return ERROR_FAIL;
767 case STLINK_SWD_DP_ERROR:
768 LOG_DEBUG("STLINK_SWD_DP_ERROR");
769 return ERROR_FAIL;
770 case STLINK_SWD_DP_PARITY_ERROR:
771 LOG_DEBUG("STLINK_SWD_DP_PARITY_ERROR");
772 return ERROR_FAIL;
773 case STLINK_SWD_AP_WDATA_ERROR:
774 LOG_DEBUG("STLINK_SWD_AP_WDATA_ERROR");
775 return ERROR_FAIL;
776 case STLINK_SWD_AP_STICKY_ERROR:
777 LOG_DEBUG("STLINK_SWD_AP_STICKY_ERROR");
778 return ERROR_FAIL;
779 case STLINK_SWD_AP_STICKYORUN_ERROR:
780 LOG_DEBUG("STLINK_SWD_AP_STICKYORUN_ERROR");
781 return ERROR_FAIL;
782 case STLINK_BAD_AP_ERROR:
783 LOG_DEBUG("STLINK_BAD_AP_ERROR");
784 return ERROR_FAIL;
785 default:
786 LOG_DEBUG("unknown/unexpected STLINK status code 0x%x", h->databuf[0]);
787 return ERROR_FAIL;
788 }
789 }
790
791 /*
792 * Wrapper around stlink_usb_xfer_noerrcheck()
793 * to check the error code in the received packet
794 */
795 static int stlink_usb_xfer_errcheck(void *handle, const uint8_t *buf, int size)
796 {
797 int retval;
798
799 assert(size > 0);
800
801 retval = stlink_usb_xfer_noerrcheck(handle, buf, size);
802 if (retval != ERROR_OK)
803 return retval;
804
805 return stlink_usb_error_check(handle);
806 }
807
808 /** Issue an STLINK command via USB transfer, with retries on any wait status responses.
809
810 Works for commands where the STLINK_DEBUG status is returned in the first
811 byte of the response packet. For SWIM a SWIM_READSTATUS is requested instead.
812
813 Returns an openocd result code.
814 */
815 static int stlink_cmd_allow_retry(void *handle, const uint8_t *buf, int size)
816 {
817 int retries = 0;
818 int res;
819 struct stlink_usb_handle_s *h = handle;
820
821 while (1) {
822 if ((h->st_mode != STLINK_MODE_DEBUG_SWIM) || !retries) {
823 res = stlink_usb_xfer_noerrcheck(handle, buf, size);
824 if (res != ERROR_OK)
825 return res;
826 }
827
828 if (h->st_mode == STLINK_MODE_DEBUG_SWIM) {
829 res = stlink_swim_status(handle);
830 if (res != ERROR_OK)
831 return res;
832 }
833
834 res = stlink_usb_error_check(handle);
835 if (res == ERROR_WAIT && retries < MAX_WAIT_RETRIES) {
836 unsigned int delay_us = (1<<retries++) * 1000;
837 LOG_DEBUG("stlink_cmd_allow_retry ERROR_WAIT, retry %d, delaying %u microseconds", retries, delay_us);
838 usleep(delay_us);
839 continue;
840 }
841 return res;
842 }
843 }
844
845 /** */
846 static int stlink_usb_read_trace(void *handle, const uint8_t *buf, int size)
847 {
848 struct stlink_usb_handle_s *h = handle;
849 int tr, ret;
850
851 assert(handle != NULL);
852
853 assert(h->version.flags & STLINK_F_HAS_TRACE);
854
855 ret = jtag_libusb_bulk_read(h->fd, h->trace_ep, (char *)buf, size,
856 STLINK_READ_TIMEOUT, &tr);
857 if (ret || tr != size) {
858 LOG_ERROR("bulk trace read failed");
859 return ERROR_FAIL;
860 }
861
862 return ERROR_OK;
863 }
864
865 /*
866 this function writes transfer length in
867 the right place in the cb
868 */
869 static void stlink_usb_set_cbw_transfer_datalength(void *handle, uint32_t size)
870 {
871 struct stlink_usb_handle_s *h = handle;
872
873 buf_set_u32(h->cmdbuf+8, 0, 32, size);
874 }
875
876 static void stlink_usb_xfer_v1_create_cmd(void *handle, uint8_t direction, uint32_t size)
877 {
878 struct stlink_usb_handle_s *h = handle;
879
880 /* fill the send buffer */
881 strcpy((char *)h->cmdbuf, "USBC");
882 h->cmdidx += 4;
883 /* csw tag not used */
884 buf_set_u32(h->cmdbuf+h->cmdidx, 0, 32, 0);
885 h->cmdidx += 4;
886 /* cbw data transfer length (in the following data phase in or out) */
887 buf_set_u32(h->cmdbuf+h->cmdidx, 0, 32, size);
888 h->cmdidx += 4;
889 /* cbw flags */
890 h->cmdbuf[h->cmdidx++] = (direction == h->rx_ep ? ENDPOINT_IN : ENDPOINT_OUT);
891 h->cmdbuf[h->cmdidx++] = 0; /* lun */
892 /* cdb clength (is filled in at xfer) */
893 h->cmdbuf[h->cmdidx++] = 0;
894 }
895
896 /** */
897 static void stlink_usb_init_buffer(void *handle, uint8_t direction, uint32_t size)
898 {
899 struct stlink_usb_handle_s *h = handle;
900
901 h->direction = direction;
902
903 h->cmdidx = 0;
904
905 memset(h->cmdbuf, 0, STLINK_SG_SIZE);
906 memset(h->databuf, 0, STLINK_DATA_SIZE);
907
908 if (h->version.stlink == 1)
909 stlink_usb_xfer_v1_create_cmd(handle, direction, size);
910 }
911
912 /** */
913 static int stlink_usb_version(void *handle)
914 {
915 int res;
916 uint32_t flags;
917 uint16_t version;
918 uint8_t v, x, y, jtag, swim, msd, bridge = 0;
919 char v_str[5 * (1 + 3) + 1]; /* VvJjMmBbSs */
920 char *p;
921 struct stlink_usb_handle_s *h = handle;
922
923 assert(handle != NULL);
924
925 stlink_usb_init_buffer(handle, h->rx_ep, 6);
926
927 h->cmdbuf[h->cmdidx++] = STLINK_GET_VERSION;
928
929 res = stlink_usb_xfer_noerrcheck(handle, h->databuf, 6);
930
931 if (res != ERROR_OK)
932 return res;
933
934 version = be_to_h_u16(h->databuf);
935 v = (version >> 12) & 0x0f;
936 x = (version >> 6) & 0x3f;
937 y = version & 0x3f;
938
939 h->vid = le_to_h_u16(h->databuf + 2);
940 h->pid = le_to_h_u16(h->databuf + 4);
941
942 switch (h->pid) {
943 case STLINK_V2_1_PID:
944 case STLINK_V2_1_NO_MSD_PID:
945 if ((x <= 22 && y == 7) || (x >= 25 && y >= 7 && y <= 12)) {
946 /* MxSy : STM8 V2.1 - SWIM only */
947 msd = x;
948 swim = y;
949 jtag = 0;
950 } else {
951 /* JxMy : STM32 V2.1 - JTAG/SWD only */
952 jtag = x;
953 msd = y;
954 swim = 0;
955 }
956 break;
957 default:
958 jtag = x;
959 swim = y;
960 msd = 0;
961 break;
962 }
963
964 /* STLINK-V3 requires a specific command */
965 if (v == 3 && x == 0 && y == 0) {
966 stlink_usb_init_buffer(handle, h->rx_ep, 16);
967
968 h->cmdbuf[h->cmdidx++] = STLINK_APIV3_GET_VERSION_EX;
969
970 res = stlink_usb_xfer_noerrcheck(handle, h->databuf, 12);
971 if (res != ERROR_OK)
972 return res;
973
974 v = h->databuf[0];
975 swim = h->databuf[1];
976 jtag = h->databuf[2];
977 msd = h->databuf[3];
978 bridge = h->databuf[4];
979 h->vid = le_to_h_u16(h->databuf + 8);
980 h->pid = le_to_h_u16(h->databuf + 10);
981 }
982
983 h->version.stlink = v;
984 h->version.jtag = jtag;
985 h->version.swim = swim;
986
987 flags = 0;
988 switch (h->version.stlink) {
989 case 1:
990 /* ST-LINK/V1 from J11 switch to api-v2 (and support SWD) */
991 if (h->version.jtag >= 11)
992 h->version.jtag_api = STLINK_JTAG_API_V2;
993 else
994 h->version.jtag_api = STLINK_JTAG_API_V1;
995
996 break;
997 case 2:
998 /* all ST-LINK/V2 and ST-Link/V2.1 use api-v2 */
999 h->version.jtag_api = STLINK_JTAG_API_V2;
1000
1001 /* API for trace from J13 */
1002 /* API for target voltage from J13 */
1003 if (h->version.jtag >= 13)
1004 flags |= STLINK_F_HAS_TRACE;
1005
1006 /* preferred API to get last R/W status from J15 */
1007 if (h->version.jtag >= 15)
1008 flags |= STLINK_F_HAS_GETLASTRWSTATUS2;
1009
1010 /* API to set SWD frequency from J22 */
1011 if (h->version.jtag >= 22)
1012 flags |= STLINK_F_HAS_SWD_SET_FREQ;
1013
1014 /* API to set JTAG frequency from J24 */
1015 /* API to access DAP registers from J24 */
1016 if (h->version.jtag >= 24) {
1017 flags |= STLINK_F_HAS_JTAG_SET_FREQ;
1018 flags |= STLINK_F_HAS_DAP_REG;
1019 }
1020
1021 /* Quirk for read DP in JTAG mode (V2 only) from J24, fixed in J32 */
1022 if (h->version.jtag >= 24 && h->version.jtag < 32)
1023 flags |= STLINK_F_QUIRK_JTAG_DP_READ;
1024
1025 /* API to read/write memory at 16 bit from J26 */
1026 if (h->version.jtag >= 26)
1027 flags |= STLINK_F_HAS_MEM_16BIT;
1028
1029 /* API required to init AP before any AP access from J28 */
1030 if (h->version.jtag >= 28)
1031 flags |= STLINK_F_HAS_AP_INIT;
1032
1033 /* Banked regs (DPv1 & DPv2) support from V2J32 */
1034 if (h->version.jtag >= 32)
1035 flags |= STLINK_F_HAS_DPBANKSEL;
1036
1037 break;
1038 case 3:
1039 /* all STLINK-V3 use api-v3 */
1040 h->version.jtag_api = STLINK_JTAG_API_V3;
1041
1042 /* STLINK-V3 is a superset of ST-LINK/V2 */
1043
1044 /* API for trace */
1045 /* API for target voltage */
1046 flags |= STLINK_F_HAS_TRACE;
1047
1048 /* preferred API to get last R/W status */
1049 flags |= STLINK_F_HAS_GETLASTRWSTATUS2;
1050
1051 /* API to access DAP registers */
1052 flags |= STLINK_F_HAS_DAP_REG;
1053
1054 /* API to read/write memory at 16 bit */
1055 flags |= STLINK_F_HAS_MEM_16BIT;
1056
1057 /* API required to init AP before any AP access */
1058 flags |= STLINK_F_HAS_AP_INIT;
1059
1060 /* Banked regs (DPv1 & DPv2) support from V3J2 */
1061 if (h->version.jtag >= 2)
1062 flags |= STLINK_F_HAS_DPBANKSEL;
1063
1064 /* 8bit read/write max packet size 512 bytes from V3J6 */
1065 if (h->version.jtag >= 6)
1066 flags |= STLINK_F_HAS_RW8_512BYTES;
1067
1068 break;
1069 default:
1070 break;
1071 }
1072 h->version.flags = flags;
1073
1074 p = v_str;
1075 p += sprintf(p, "V%d", v);
1076 if (jtag || !msd)
1077 p += sprintf(p, "J%d", jtag);
1078 if (msd)
1079 p += sprintf(p, "M%d", msd);
1080 if (bridge)
1081 p += sprintf(p, "B%d", bridge);
1082 if (swim || !msd)
1083 sprintf(p, "S%d", swim);
1084
1085 LOG_INFO("STLINK %s (API v%d) VID:PID %04X:%04X",
1086 v_str,
1087 h->version.jtag_api,
1088 h->vid,
1089 h->pid);
1090
1091 return ERROR_OK;
1092 }
1093
1094 static int stlink_usb_check_voltage(void *handle, float *target_voltage)
1095 {
1096 struct stlink_usb_handle_s *h = handle;
1097 uint32_t adc_results[2];
1098
1099 /* no error message, simply quit with error */
1100 if (!(h->version.flags & STLINK_F_HAS_TARGET_VOLT))
1101 return ERROR_COMMAND_NOTFOUND;
1102
1103 stlink_usb_init_buffer(handle, h->rx_ep, 8);
1104
1105 h->cmdbuf[h->cmdidx++] = STLINK_GET_TARGET_VOLTAGE;
1106
1107 int result = stlink_usb_xfer_noerrcheck(handle, h->databuf, 8);
1108
1109 if (result != ERROR_OK)
1110 return result;
1111
1112 /* convert result */
1113 adc_results[0] = le_to_h_u32(h->databuf);
1114 adc_results[1] = le_to_h_u32(h->databuf + 4);
1115
1116 *target_voltage = 0;
1117
1118 if (adc_results[0])
1119 *target_voltage = 2 * ((float)adc_results[1]) * (float)(1.2 / adc_results[0]);
1120
1121 LOG_INFO("Target voltage: %f", (double)*target_voltage);
1122
1123 return ERROR_OK;
1124 }
1125
1126 static int stlink_usb_set_swdclk(void *handle, uint16_t clk_divisor)
1127 {
1128 struct stlink_usb_handle_s *h = handle;
1129
1130 assert(handle != NULL);
1131
1132 if (!(h->version.flags & STLINK_F_HAS_SWD_SET_FREQ))
1133 return ERROR_COMMAND_NOTFOUND;
1134
1135 stlink_usb_init_buffer(handle, h->rx_ep, 2);
1136
1137 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1138 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_SWD_SET_FREQ;
1139 h_u16_to_le(h->cmdbuf+h->cmdidx, clk_divisor);
1140 h->cmdidx += 2;
1141
1142 int result = stlink_cmd_allow_retry(handle, h->databuf, 2);
1143
1144 if (result != ERROR_OK)
1145 return result;
1146
1147 return ERROR_OK;
1148 }
1149
1150 static int stlink_usb_set_jtagclk(void *handle, uint16_t clk_divisor)
1151 {
1152 struct stlink_usb_handle_s *h = handle;
1153
1154 assert(handle != NULL);
1155
1156 if (!(h->version.flags & STLINK_F_HAS_JTAG_SET_FREQ))
1157 return ERROR_COMMAND_NOTFOUND;
1158
1159 stlink_usb_init_buffer(handle, h->rx_ep, 2);
1160
1161 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1162 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_JTAG_SET_FREQ;
1163 h_u16_to_le(h->cmdbuf+h->cmdidx, clk_divisor);
1164 h->cmdidx += 2;
1165
1166 int result = stlink_cmd_allow_retry(handle, h->databuf, 2);
1167
1168 if (result != ERROR_OK)
1169 return result;
1170
1171 return ERROR_OK;
1172 }
1173
1174 /** */
1175 static int stlink_usb_current_mode(void *handle, uint8_t *mode)
1176 {
1177 int res;
1178 struct stlink_usb_handle_s *h = handle;
1179
1180 assert(handle != NULL);
1181
1182 stlink_usb_init_buffer(handle, h->rx_ep, 2);
1183
1184 h->cmdbuf[h->cmdidx++] = STLINK_GET_CURRENT_MODE;
1185
1186 res = stlink_usb_xfer_noerrcheck(handle, h->databuf, 2);
1187
1188 if (res != ERROR_OK)
1189 return res;
1190
1191 *mode = h->databuf[0];
1192
1193 return ERROR_OK;
1194 }
1195
1196 /** */
1197 static int stlink_usb_mode_enter(void *handle, enum stlink_mode type)
1198 {
1199 int rx_size = 0;
1200 struct stlink_usb_handle_s *h = handle;
1201
1202 assert(handle != NULL);
1203
1204 /* on api V2 we are able the read the latest command
1205 * status
1206 * TODO: we need the test on api V1 too
1207 */
1208 if (h->version.jtag_api != STLINK_JTAG_API_V1)
1209 rx_size = 2;
1210
1211 stlink_usb_init_buffer(handle, h->rx_ep, rx_size);
1212
1213 switch (type) {
1214 case STLINK_MODE_DEBUG_JTAG:
1215 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1216 if (h->version.jtag_api == STLINK_JTAG_API_V1)
1217 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_ENTER;
1218 else
1219 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_ENTER;
1220 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_ENTER_JTAG_NO_RESET;
1221 break;
1222 case STLINK_MODE_DEBUG_SWD:
1223 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1224 if (h->version.jtag_api == STLINK_JTAG_API_V1)
1225 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_ENTER;
1226 else
1227 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_ENTER;
1228 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_ENTER_SWD_NO_RESET;
1229 break;
1230 case STLINK_MODE_DEBUG_SWIM:
1231 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1232 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_ENTER;
1233 /* swim enter does not return any response or status */
1234 return stlink_usb_xfer_noerrcheck(handle, h->databuf, 0);
1235 case STLINK_MODE_DFU:
1236 case STLINK_MODE_MASS:
1237 default:
1238 return ERROR_FAIL;
1239 }
1240
1241 return stlink_cmd_allow_retry(handle, h->databuf, rx_size);
1242 }
1243
1244 /** */
1245 static int stlink_usb_mode_leave(void *handle, enum stlink_mode type)
1246 {
1247 int res;
1248 struct stlink_usb_handle_s *h = handle;
1249
1250 assert(handle != NULL);
1251
1252 /* command with no reply, use a valid endpoint but zero size */
1253 stlink_usb_init_buffer(handle, h->rx_ep, 0);
1254
1255 switch (type) {
1256 case STLINK_MODE_DEBUG_JTAG:
1257 case STLINK_MODE_DEBUG_SWD:
1258 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1259 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_EXIT;
1260 break;
1261 case STLINK_MODE_DEBUG_SWIM:
1262 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1263 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_EXIT;
1264 break;
1265 case STLINK_MODE_DFU:
1266 h->cmdbuf[h->cmdidx++] = STLINK_DFU_COMMAND;
1267 h->cmdbuf[h->cmdidx++] = STLINK_DFU_EXIT;
1268 break;
1269 case STLINK_MODE_MASS:
1270 default:
1271 return ERROR_FAIL;
1272 }
1273
1274 res = stlink_usb_xfer_noerrcheck(handle, h->databuf, 0);
1275
1276 if (res != ERROR_OK)
1277 return res;
1278
1279 return ERROR_OK;
1280 }
1281
1282 static int stlink_usb_assert_srst(void *handle, int srst);
1283
1284 static enum stlink_mode stlink_get_mode(enum hl_transports t)
1285 {
1286 switch (t) {
1287 case HL_TRANSPORT_SWD:
1288 return STLINK_MODE_DEBUG_SWD;
1289 case HL_TRANSPORT_JTAG:
1290 return STLINK_MODE_DEBUG_JTAG;
1291 default:
1292 return STLINK_MODE_UNKNOWN;
1293 }
1294 }
1295
1296 /** */
1297 static int stlink_usb_init_mode(void *handle, bool connect_under_reset, int initial_interface_speed)
1298 {
1299 int res;
1300 uint8_t mode;
1301 enum stlink_mode emode;
1302 struct stlink_usb_handle_s *h = handle;
1303
1304 assert(handle != NULL);
1305
1306 res = stlink_usb_current_mode(handle, &mode);
1307
1308 if (res != ERROR_OK)
1309 return res;
1310
1311 LOG_DEBUG("MODE: 0x%02X", mode);
1312
1313 /* try to exit current mode */
1314 switch (mode) {
1315 case STLINK_DEV_DFU_MODE:
1316 emode = STLINK_MODE_DFU;
1317 break;
1318 case STLINK_DEV_DEBUG_MODE:
1319 emode = STLINK_MODE_DEBUG_SWD;
1320 break;
1321 case STLINK_DEV_SWIM_MODE:
1322 emode = STLINK_MODE_DEBUG_SWIM;
1323 break;
1324 case STLINK_DEV_BOOTLOADER_MODE:
1325 case STLINK_DEV_MASS_MODE:
1326 default:
1327 emode = STLINK_MODE_UNKNOWN;
1328 break;
1329 }
1330
1331 if (emode != STLINK_MODE_UNKNOWN) {
1332 res = stlink_usb_mode_leave(handle, emode);
1333
1334 if (res != ERROR_OK)
1335 return res;
1336 }
1337
1338 res = stlink_usb_current_mode(handle, &mode);
1339
1340 if (res != ERROR_OK)
1341 return res;
1342
1343 /* we check the target voltage here as an aid to debugging connection problems.
1344 * the stlink requires the target Vdd to be connected for reliable debugging.
1345 * this cmd is supported in all modes except DFU
1346 */
1347 if (mode != STLINK_DEV_DFU_MODE) {
1348
1349 float target_voltage;
1350
1351 /* check target voltage (if supported) */
1352 res = stlink_usb_check_voltage(h, &target_voltage);
1353
1354 if (res != ERROR_OK) {
1355 if (res != ERROR_COMMAND_NOTFOUND)
1356 LOG_ERROR("voltage check failed");
1357 /* attempt to continue as it is not a catastrophic failure */
1358 } else {
1359 /* check for a sensible target voltage, operating range is 1.65-5.5v
1360 * according to datasheet */
1361 if (target_voltage < 1.5)
1362 LOG_ERROR("target voltage may be too low for reliable debugging");
1363 }
1364 }
1365
1366 LOG_DEBUG("MODE: 0x%02X", mode);
1367
1368 /* set selected mode */
1369 emode = h->st_mode;
1370
1371 if (emode == STLINK_MODE_UNKNOWN) {
1372 LOG_ERROR("selected mode (transport) not supported");
1373 return ERROR_FAIL;
1374 }
1375
1376 /* set the speed before entering the mode, as the chip discovery phase should be done at this speed too */
1377 if (emode == STLINK_MODE_DEBUG_JTAG) {
1378 if (h->version.flags & STLINK_F_HAS_JTAG_SET_FREQ) {
1379 stlink_dump_speed_map(stlink_khz_to_speed_map_jtag, ARRAY_SIZE(stlink_khz_to_speed_map_jtag));
1380 stlink_speed(h, initial_interface_speed, false);
1381 }
1382 } else if (emode == STLINK_MODE_DEBUG_SWD) {
1383 if (h->version.flags & STLINK_F_HAS_SWD_SET_FREQ) {
1384 stlink_dump_speed_map(stlink_khz_to_speed_map_swd, ARRAY_SIZE(stlink_khz_to_speed_map_swd));
1385 stlink_speed(h, initial_interface_speed, false);
1386 }
1387 }
1388
1389 if (h->version.jtag_api == STLINK_JTAG_API_V3) {
1390 struct speed_map map[STLINK_V3_MAX_FREQ_NB];
1391
1392 stlink_get_com_freq(h, (emode == STLINK_MODE_DEBUG_JTAG), map);
1393 stlink_dump_speed_map(map, ARRAY_SIZE(map));
1394 stlink_speed(h, initial_interface_speed, false);
1395 }
1396
1397 /* preliminary SRST assert:
1398 * We want SRST is asserted before activating debug signals (mode_enter).
1399 * As the required mode has not been set, the adapter may not know what pin to use.
1400 * Tested firmware STLINK v2 JTAG v29 API v2 SWIM v0 uses T_NRST pin by default
1401 * Tested firmware STLINK v2 JTAG v27 API v2 SWIM v6 uses T_NRST pin by default
1402 * after power on, SWIM_RST stays unchanged */
1403 if (connect_under_reset && emode != STLINK_MODE_DEBUG_SWIM)
1404 stlink_usb_assert_srst(handle, 0);
1405 /* do not check the return status here, we will
1406 proceed and enter the desired mode below
1407 and try asserting srst again. */
1408
1409 res = stlink_usb_mode_enter(handle, emode);
1410 if (res != ERROR_OK)
1411 return res;
1412
1413 /* assert SRST again: a little bit late but now the adapter knows for sure what pin to use */
1414 if (connect_under_reset) {
1415 res = stlink_usb_assert_srst(handle, 0);
1416 if (res != ERROR_OK)
1417 return res;
1418 }
1419
1420 res = stlink_usb_current_mode(handle, &mode);
1421
1422 if (res != ERROR_OK)
1423 return res;
1424
1425 LOG_DEBUG("MODE: 0x%02X", mode);
1426
1427 return ERROR_OK;
1428 }
1429
1430 /* request status from last swim request */
1431 static int stlink_swim_status(void *handle)
1432 {
1433 struct stlink_usb_handle_s *h = handle;
1434 int res;
1435
1436 stlink_usb_init_buffer(handle, h->rx_ep, 4);
1437 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1438 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_READSTATUS;
1439 /* error is checked by the caller */
1440 res = stlink_usb_xfer_noerrcheck(handle, h->databuf, 4);
1441 if (res != ERROR_OK)
1442 return res;
1443 return ERROR_OK;
1444 }
1445 /*
1446 the purpose of this function is unknown...
1447 capabilites? anyway for swim v6 it returns
1448 0001020600000000
1449 */
1450 __attribute__((unused))
1451 static int stlink_swim_cap(void *handle, uint8_t *cap)
1452 {
1453 struct stlink_usb_handle_s *h = handle;
1454 int res;
1455
1456 stlink_usb_init_buffer(handle, h->rx_ep, 8);
1457 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1458 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_READ_CAP;
1459 h->cmdbuf[h->cmdidx++] = 0x01;
1460 res = stlink_usb_xfer_noerrcheck(handle, h->databuf, 8);
1461 if (res != ERROR_OK)
1462 return res;
1463 memcpy(cap, h->databuf, 8);
1464 return ERROR_OK;
1465 }
1466
1467 /* debug dongle assert/deassert sreset line */
1468 static int stlink_swim_assert_reset(void *handle, int reset)
1469 {
1470 struct stlink_usb_handle_s *h = handle;
1471 int res;
1472
1473 stlink_usb_init_buffer(handle, h->rx_ep, 0);
1474 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1475 if (!reset)
1476 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_ASSERT_RESET;
1477 else
1478 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_DEASSERT_RESET;
1479 res = stlink_cmd_allow_retry(handle, h->databuf, 0);
1480 if (res != ERROR_OK)
1481 return res;
1482 return ERROR_OK;
1483 }
1484
1485 /*
1486 send swim enter seq
1487 1.3ms low then 750Hz then 1.5kHz
1488 */
1489 static int stlink_swim_enter(void *handle)
1490 {
1491 struct stlink_usb_handle_s *h = handle;
1492 int res;
1493
1494 stlink_usb_init_buffer(handle, h->rx_ep, 0);
1495 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1496 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_ENTER_SEQ;
1497 res = stlink_cmd_allow_retry(handle, h->databuf, 0);
1498 if (res != ERROR_OK)
1499 return res;
1500 return ERROR_OK;
1501 }
1502
1503 /* switch high/low speed swim */
1504 static int stlink_swim_speed(void *handle, int speed)
1505 {
1506 struct stlink_usb_handle_s *h = handle;
1507 int res;
1508
1509 stlink_usb_init_buffer(handle, h->rx_ep, 0);
1510 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1511 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_SPEED;
1512 if (speed)
1513 h->cmdbuf[h->cmdidx++] = 1;
1514 else
1515 h->cmdbuf[h->cmdidx++] = 0;
1516 res = stlink_cmd_allow_retry(handle, h->databuf, 0);
1517 if (res != ERROR_OK)
1518 return res;
1519 return ERROR_OK;
1520 }
1521
1522 /*
1523 initiate srst from swim.
1524 nrst is pulled low for 50us.
1525 */
1526 static int stlink_swim_generate_rst(void *handle)
1527 {
1528 struct stlink_usb_handle_s *h = handle;
1529 int res;
1530
1531 stlink_usb_init_buffer(handle, h->rx_ep, 0);
1532 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1533 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_GEN_RST;
1534 res = stlink_cmd_allow_retry(handle, h->databuf, 0);
1535 if (res != ERROR_OK)
1536 return res;
1537 return ERROR_OK;
1538 }
1539
1540 /*
1541 send resyncronize sequence
1542 swim is pulled low for 16us
1543 reply is 64 clks low
1544 */
1545 static int stlink_swim_resync(void *handle)
1546 {
1547 struct stlink_usb_handle_s *h = handle;
1548 int res;
1549
1550 stlink_usb_init_buffer(handle, h->rx_ep, 0);
1551 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1552 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_RESET;
1553 res = stlink_cmd_allow_retry(handle, h->databuf, 0);
1554 if (res != ERROR_OK)
1555 return res;
1556 return ERROR_OK;
1557 }
1558
1559 static int stlink_swim_writebytes(void *handle, uint32_t addr, uint32_t len, const uint8_t *data)
1560 {
1561 struct stlink_usb_handle_s *h = handle;
1562 int res;
1563 unsigned int i;
1564 unsigned int datalen = 0;
1565 int cmdsize = STLINK_CMD_SIZE_V2;
1566
1567 if (len > STLINK_DATA_SIZE)
1568 return ERROR_FAIL;
1569
1570 if (h->version.stlink == 1)
1571 cmdsize = STLINK_SG_SIZE;
1572
1573 stlink_usb_init_buffer(handle, h->tx_ep, 0);
1574 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1575 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_WRITEMEM;
1576 h_u16_to_be(h->cmdbuf+h->cmdidx, len);
1577 h->cmdidx += 2;
1578 h_u32_to_be(h->cmdbuf+h->cmdidx, addr);
1579 h->cmdidx += 4;
1580 for (i = 0; i < len; i++) {
1581 if (h->cmdidx == cmdsize)
1582 h->databuf[datalen++] = *(data++);
1583 else
1584 h->cmdbuf[h->cmdidx++] = *(data++);
1585 }
1586 if (h->version.stlink == 1)
1587 stlink_usb_set_cbw_transfer_datalength(handle, datalen);
1588
1589 res = stlink_cmd_allow_retry(handle, h->databuf, datalen);
1590 if (res != ERROR_OK)
1591 return res;
1592 return ERROR_OK;
1593 }
1594
1595 static int stlink_swim_readbytes(void *handle, uint32_t addr, uint32_t len, uint8_t *data)
1596 {
1597 struct stlink_usb_handle_s *h = handle;
1598 int res;
1599
1600 if (len > STLINK_DATA_SIZE)
1601 return ERROR_FAIL;
1602
1603 stlink_usb_init_buffer(handle, h->rx_ep, 0);
1604 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1605 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_READMEM;
1606 h_u16_to_be(h->cmdbuf+h->cmdidx, len);
1607 h->cmdidx += 2;
1608 h_u32_to_be(h->cmdbuf+h->cmdidx, addr);
1609 h->cmdidx += 4;
1610 res = stlink_cmd_allow_retry(handle, h->databuf, 0);
1611 if (res != ERROR_OK)
1612 return res;
1613
1614 stlink_usb_init_buffer(handle, h->rx_ep, len);
1615 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1616 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_READBUF;
1617 res = stlink_usb_xfer_noerrcheck(handle, data, len);
1618 if (res != ERROR_OK)
1619 return res;
1620
1621 return ERROR_OK;
1622 }
1623
1624 /** */
1625 static int stlink_usb_idcode(void *handle, uint32_t *idcode)
1626 {
1627 int res, offset;
1628 struct stlink_usb_handle_s *h = handle;
1629
1630 assert(handle != NULL);
1631
1632 /* there is no swim read core id cmd */
1633 if (h->st_mode == STLINK_MODE_DEBUG_SWIM) {
1634 *idcode = 0;
1635 return ERROR_OK;
1636 }
1637
1638 stlink_usb_init_buffer(handle, h->rx_ep, 12);
1639
1640 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1641 if (h->version.jtag_api == STLINK_JTAG_API_V1) {
1642 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_READCOREID;
1643
1644 res = stlink_usb_xfer_noerrcheck(handle, h->databuf, 4);
1645 offset = 0;
1646 } else {
1647 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_READ_IDCODES;
1648
1649 res = stlink_usb_xfer_errcheck(handle, h->databuf, 12);
1650 offset = 4;
1651 }
1652
1653 if (res != ERROR_OK)
1654 return res;
1655
1656 *idcode = le_to_h_u32(h->databuf + offset);
1657
1658 LOG_DEBUG("IDCODE: 0x%08" PRIX32, *idcode);
1659
1660 return ERROR_OK;
1661 }
1662
1663 static int stlink_usb_v2_read_debug_reg(void *handle, uint32_t addr, uint32_t *val)
1664 {
1665 struct stlink_usb_handle_s *h = handle;
1666 int res;
1667
1668 assert(handle != NULL);
1669
1670 stlink_usb_init_buffer(handle, h->rx_ep, 8);
1671
1672 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1673 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_READDEBUGREG;
1674 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
1675 h->cmdidx += 4;
1676
1677 res = stlink_cmd_allow_retry(handle, h->databuf, 8);
1678 if (res != ERROR_OK)
1679 return res;
1680
1681 *val = le_to_h_u32(h->databuf + 4);
1682 return ERROR_OK;
1683 }
1684
1685 static int stlink_usb_write_debug_reg(void *handle, uint32_t addr, uint32_t val)
1686 {
1687 struct stlink_usb_handle_s *h = handle;
1688
1689 assert(handle != NULL);
1690
1691 stlink_usb_init_buffer(handle, h->rx_ep, 2);
1692
1693 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1694 if (h->version.jtag_api == STLINK_JTAG_API_V1)
1695 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_WRITEDEBUGREG;
1696 else
1697 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_WRITEDEBUGREG;
1698 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
1699 h->cmdidx += 4;
1700 h_u32_to_le(h->cmdbuf+h->cmdidx, val);
1701 h->cmdidx += 4;
1702
1703 return stlink_cmd_allow_retry(handle, h->databuf, 2);
1704 }
1705
1706 /** */
1707 static int stlink_usb_trace_read(void *handle, uint8_t *buf, size_t *size)
1708 {
1709 struct stlink_usb_handle_s *h = handle;
1710
1711 assert(handle != NULL);
1712
1713 if (h->trace.enabled && (h->version.flags & STLINK_F_HAS_TRACE)) {
1714 int res;
1715
1716 stlink_usb_init_buffer(handle, h->rx_ep, 10);
1717
1718 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1719 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_GET_TRACE_NB;
1720
1721 res = stlink_usb_xfer_noerrcheck(handle, h->databuf, 2);
1722 if (res != ERROR_OK)
1723 return res;
1724
1725 size_t bytes_avail = le_to_h_u16(h->databuf);
1726 *size = bytes_avail < *size ? bytes_avail : *size - 1;
1727
1728 if (*size > 0) {
1729 res = stlink_usb_read_trace(handle, buf, *size);
1730 if (res != ERROR_OK)
1731 return res;
1732 return ERROR_OK;
1733 }
1734 }
1735 *size = 0;
1736 return ERROR_OK;
1737 }
1738
1739 static enum target_state stlink_usb_v2_get_status(void *handle)
1740 {
1741 int result;
1742 uint32_t status;
1743
1744 result = stlink_usb_v2_read_debug_reg(handle, DCB_DHCSR, &status);
1745 if (result != ERROR_OK)
1746 return TARGET_UNKNOWN;
1747
1748 if (status & S_HALT)
1749 return TARGET_HALTED;
1750 else if (status & S_RESET_ST)
1751 return TARGET_RESET;
1752
1753 return TARGET_RUNNING;
1754 }
1755
1756 /** */
1757 static enum target_state stlink_usb_state(void *handle)
1758 {
1759 int res;
1760 struct stlink_usb_handle_s *h = handle;
1761
1762 assert(handle != NULL);
1763
1764 if (h->st_mode == STLINK_MODE_DEBUG_SWIM) {
1765 res = stlink_usb_mode_enter(handle, h->st_mode);
1766 if (res != ERROR_OK)
1767 return TARGET_UNKNOWN;
1768
1769 res = stlink_swim_resync(handle);
1770 if (res != ERROR_OK)
1771 return TARGET_UNKNOWN;
1772
1773 return ERROR_OK;
1774 }
1775
1776 if (h->reconnect_pending) {
1777 LOG_INFO("Previous state query failed, trying to reconnect");
1778 res = stlink_usb_mode_enter(handle, h->st_mode);
1779 if (res != ERROR_OK)
1780 return TARGET_UNKNOWN;
1781
1782 h->reconnect_pending = false;
1783 }
1784
1785 if (h->version.jtag_api != STLINK_JTAG_API_V1) {
1786 res = stlink_usb_v2_get_status(handle);
1787 if (res == TARGET_UNKNOWN)
1788 h->reconnect_pending = true;
1789 return res;
1790 }
1791
1792 stlink_usb_init_buffer(handle, h->rx_ep, 2);
1793
1794 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1795 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_GETSTATUS;
1796
1797 res = stlink_usb_xfer_noerrcheck(handle, h->databuf, 2);
1798
1799 if (res != ERROR_OK)
1800 return TARGET_UNKNOWN;
1801
1802 if (h->databuf[0] == STLINK_CORE_RUNNING)
1803 return TARGET_RUNNING;
1804 if (h->databuf[0] == STLINK_CORE_HALTED)
1805 return TARGET_HALTED;
1806
1807 h->reconnect_pending = true;
1808
1809 return TARGET_UNKNOWN;
1810 }
1811
1812 static int stlink_usb_assert_srst(void *handle, int srst)
1813 {
1814 struct stlink_usb_handle_s *h = handle;
1815
1816 assert(handle != NULL);
1817
1818 if (h->st_mode == STLINK_MODE_DEBUG_SWIM)
1819 return stlink_swim_assert_reset(handle, srst);
1820
1821 if (h->version.stlink == 1)
1822 return ERROR_COMMAND_NOTFOUND;
1823
1824 stlink_usb_init_buffer(handle, h->rx_ep, 2);
1825
1826 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1827 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_DRIVE_NRST;
1828 h->cmdbuf[h->cmdidx++] = srst;
1829
1830 return stlink_cmd_allow_retry(handle, h->databuf, 2);
1831 }
1832
1833 /** */
1834 static void stlink_usb_trace_disable(void *handle)
1835 {
1836 int res = ERROR_OK;
1837 struct stlink_usb_handle_s *h = handle;
1838
1839 assert(handle != NULL);
1840
1841 assert(h->version.flags & STLINK_F_HAS_TRACE);
1842
1843 LOG_DEBUG("Tracing: disable");
1844
1845 stlink_usb_init_buffer(handle, h->rx_ep, 2);
1846 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1847 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_STOP_TRACE_RX;
1848 res = stlink_usb_xfer_errcheck(handle, h->databuf, 2);
1849
1850 if (res == ERROR_OK)
1851 h->trace.enabled = false;
1852 }
1853
1854
1855 /** */
1856 static int stlink_usb_trace_enable(void *handle)
1857 {
1858 int res;
1859 struct stlink_usb_handle_s *h = handle;
1860
1861 assert(handle != NULL);
1862
1863 if (h->version.flags & STLINK_F_HAS_TRACE) {
1864 stlink_usb_init_buffer(handle, h->rx_ep, 10);
1865
1866 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1867 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_START_TRACE_RX;
1868 h_u16_to_le(h->cmdbuf+h->cmdidx, (uint16_t)STLINK_TRACE_SIZE);
1869 h->cmdidx += 2;
1870 h_u32_to_le(h->cmdbuf+h->cmdidx, h->trace.source_hz);
1871 h->cmdidx += 4;
1872
1873 res = stlink_usb_xfer_errcheck(handle, h->databuf, 2);
1874
1875 if (res == ERROR_OK) {
1876 h->trace.enabled = true;
1877 LOG_DEBUG("Tracing: recording at %" PRIu32 "Hz", h->trace.source_hz);
1878 }
1879 } else {
1880 LOG_ERROR("Tracing is not supported by this version.");
1881 res = ERROR_FAIL;
1882 }
1883
1884 return res;
1885 }
1886
1887 /** */
1888 static int stlink_usb_reset(void *handle)
1889 {
1890 struct stlink_usb_handle_s *h = handle;
1891 int retval;
1892
1893 assert(handle != NULL);
1894
1895 if (h->st_mode == STLINK_MODE_DEBUG_SWIM)
1896 return stlink_swim_generate_rst(handle);
1897
1898 stlink_usb_init_buffer(handle, h->rx_ep, 2);
1899
1900 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1901
1902 if (h->version.jtag_api == STLINK_JTAG_API_V1)
1903 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_RESETSYS;
1904 else
1905 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_RESETSYS;
1906
1907 retval = stlink_cmd_allow_retry(handle, h->databuf, 2);
1908 if (retval != ERROR_OK)
1909 return retval;
1910
1911 if (h->trace.enabled) {
1912 stlink_usb_trace_disable(h);
1913 return stlink_usb_trace_enable(h);
1914 }
1915
1916 return ERROR_OK;
1917 }
1918
1919 /** */
1920 static int stlink_usb_run(void *handle)
1921 {
1922 int res;
1923 struct stlink_usb_handle_s *h = handle;
1924
1925 assert(handle != NULL);
1926
1927 if (h->version.jtag_api != STLINK_JTAG_API_V1) {
1928 res = stlink_usb_write_debug_reg(handle, DCB_DHCSR, DBGKEY|C_DEBUGEN);
1929
1930 return res;
1931 }
1932
1933 stlink_usb_init_buffer(handle, h->rx_ep, 2);
1934
1935 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1936 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_RUNCORE;
1937
1938 return stlink_cmd_allow_retry(handle, h->databuf, 2);
1939 }
1940
1941 /** */
1942 static int stlink_usb_halt(void *handle)
1943 {
1944 int res;
1945 struct stlink_usb_handle_s *h = handle;
1946
1947 assert(handle != NULL);
1948
1949 if (h->version.jtag_api != STLINK_JTAG_API_V1) {
1950 res = stlink_usb_write_debug_reg(handle, DCB_DHCSR, DBGKEY|C_HALT|C_DEBUGEN);
1951
1952 return res;
1953 }
1954
1955 stlink_usb_init_buffer(handle, h->rx_ep, 2);
1956
1957 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1958 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_FORCEDEBUG;
1959
1960 return stlink_cmd_allow_retry(handle, h->databuf, 2);
1961 }
1962
1963 /** */
1964 static int stlink_usb_step(void *handle)
1965 {
1966 struct stlink_usb_handle_s *h = handle;
1967
1968 assert(handle != NULL);
1969
1970 if (h->version.jtag_api != STLINK_JTAG_API_V1) {
1971 /* TODO: this emulates the v1 api, it should really use a similar auto mask isr
1972 * that the Cortex-M3 currently does. */
1973 stlink_usb_write_debug_reg(handle, DCB_DHCSR, DBGKEY|C_HALT|C_MASKINTS|C_DEBUGEN);
1974 stlink_usb_write_debug_reg(handle, DCB_DHCSR, DBGKEY|C_STEP|C_MASKINTS|C_DEBUGEN);
1975 return stlink_usb_write_debug_reg(handle, DCB_DHCSR, DBGKEY|C_HALT|C_DEBUGEN);
1976 }
1977
1978 stlink_usb_init_buffer(handle, h->rx_ep, 2);
1979
1980 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1981 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_STEPCORE;
1982
1983 return stlink_cmd_allow_retry(handle, h->databuf, 2);
1984 }
1985
1986 /** */
1987 static int stlink_usb_read_regs(void *handle)
1988 {
1989 int res;
1990 struct stlink_usb_handle_s *h = handle;
1991
1992 assert(handle != NULL);
1993
1994 stlink_usb_init_buffer(handle, h->rx_ep, 88);
1995
1996 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1997 if (h->version.jtag_api == STLINK_JTAG_API_V1) {
1998
1999 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_READALLREGS;
2000 res = stlink_usb_xfer_noerrcheck(handle, h->databuf, 84);
2001 /* regs data from offset 0 */
2002 } else {
2003 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_READALLREGS;
2004 res = stlink_usb_xfer_errcheck(handle, h->databuf, 88);
2005 /* status at offset 0, regs data from offset 4 */
2006 }
2007
2008 return res;
2009 }
2010
2011 /** */
2012 static int stlink_usb_read_reg(void *handle, int num, uint32_t *val)
2013 {
2014 int res;
2015 struct stlink_usb_handle_s *h = handle;
2016
2017 assert(handle != NULL);
2018
2019 stlink_usb_init_buffer(handle, h->rx_ep, h->version.jtag_api == STLINK_JTAG_API_V1 ? 4 : 8);
2020
2021 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
2022 if (h->version.jtag_api == STLINK_JTAG_API_V1)
2023 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_READREG;
2024 else
2025 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_READREG;
2026 h->cmdbuf[h->cmdidx++] = num;
2027
2028 if (h->version.jtag_api == STLINK_JTAG_API_V1) {
2029 res = stlink_usb_xfer_noerrcheck(handle, h->databuf, 4);
2030 if (res != ERROR_OK)
2031 return res;
2032 *val = le_to_h_u32(h->databuf);
2033 return ERROR_OK;
2034 } else {
2035 res = stlink_cmd_allow_retry(handle, h->databuf, 8);
2036 if (res != ERROR_OK)
2037 return res;
2038 *val = le_to_h_u32(h->databuf + 4);
2039 return ERROR_OK;
2040 }
2041 }
2042
2043 /** */
2044 static int stlink_usb_write_reg(void *handle, int num, uint32_t val)
2045 {
2046 struct stlink_usb_handle_s *h = handle;
2047
2048 assert(handle != NULL);
2049
2050 stlink_usb_init_buffer(handle, h->rx_ep, 2);
2051
2052 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
2053 if (h->version.jtag_api == STLINK_JTAG_API_V1)
2054 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_WRITEREG;
2055 else
2056 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_WRITEREG;
2057 h->cmdbuf[h->cmdidx++] = num;
2058 h_u32_to_le(h->cmdbuf+h->cmdidx, val);
2059 h->cmdidx += 4;
2060
2061 return stlink_cmd_allow_retry(handle, h->databuf, 2);
2062 }
2063
2064 static int stlink_usb_get_rw_status(void *handle)
2065 {
2066 struct stlink_usb_handle_s *h = handle;
2067
2068 assert(handle != NULL);
2069
2070 if (h->version.jtag_api == STLINK_JTAG_API_V1)
2071 return ERROR_OK;
2072
2073 stlink_usb_init_buffer(handle, h->rx_ep, 2);
2074
2075 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
2076 if (h->version.flags & STLINK_F_HAS_GETLASTRWSTATUS2) {
2077 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_GETLASTRWSTATUS2;
2078 return stlink_usb_xfer_errcheck(handle, h->databuf, 12);
2079 } else {
2080 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_GETLASTRWSTATUS;
2081 return stlink_usb_xfer_errcheck(handle, h->databuf, 2);
2082 }
2083 }
2084
2085 /** */
2086 static int stlink_usb_read_mem8(void *handle, uint32_t addr, uint16_t len,
2087 uint8_t *buffer)
2088 {
2089 int res;
2090 uint16_t read_len = len;
2091 struct stlink_usb_handle_s *h = handle;
2092
2093 assert(handle != NULL);
2094
2095 /* max 8 bit read/write is 64 bytes or 512 bytes for v3 */
2096 if (len > stlink_usb_block(h)) {
2097 LOG_DEBUG("max buffer (%d) length exceeded", stlink_usb_block(h));
2098 return ERROR_FAIL;
2099 }
2100
2101 stlink_usb_init_buffer(handle, h->rx_ep, read_len);
2102
2103 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
2104 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_READMEM_8BIT;
2105 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
2106 h->cmdidx += 4;
2107 h_u16_to_le(h->cmdbuf+h->cmdidx, len);
2108 h->cmdidx += 2;
2109
2110 /* we need to fix read length for single bytes */
2111 if (read_len == 1)
2112 read_len++;
2113
2114 res = stlink_usb_xfer_noerrcheck(handle, h->databuf, read_len);
2115
2116 if (res != ERROR_OK)
2117 return res;
2118
2119 memcpy(buffer, h->databuf, len);
2120
2121 return stlink_usb_get_rw_status(handle);
2122 }
2123
2124 /** */
2125 static int stlink_usb_write_mem8(void *handle, uint32_t addr, uint16_t len,
2126 const uint8_t *buffer)
2127 {
2128 int res;
2129 struct stlink_usb_handle_s *h = handle;
2130
2131 assert(handle != NULL);
2132
2133 /* max 8 bit read/write is 64 bytes or 512 bytes for v3 */
2134 if (len > stlink_usb_block(h)) {
2135 LOG_DEBUG("max buffer length (%d) exceeded", stlink_usb_block(h));
2136 return ERROR_FAIL;
2137 }
2138
2139 stlink_usb_init_buffer(handle, h->tx_ep, len);
2140
2141 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
2142 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_WRITEMEM_8BIT;
2143 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
2144 h->cmdidx += 4;
2145 h_u16_to_le(h->cmdbuf+h->cmdidx, len);
2146 h->cmdidx += 2;
2147
2148 res = stlink_usb_xfer_noerrcheck(handle, buffer, len);
2149
2150 if (res != ERROR_OK)
2151 return res;
2152
2153 return stlink_usb_get_rw_status(handle);
2154 }
2155
2156 /** */
2157 static int stlink_usb_read_mem16(void *handle, uint32_t addr, uint16_t len,
2158 uint8_t *buffer)
2159 {
2160 int res;
2161 struct stlink_usb_handle_s *h = handle;
2162
2163 assert(handle != NULL);
2164
2165 if (!(h->version.flags & STLINK_F_HAS_MEM_16BIT))
2166 return ERROR_COMMAND_NOTFOUND;
2167
2168 /* data must be a multiple of 2 and half-word aligned */
2169 if (len % 2 || addr % 2) {
2170 LOG_DEBUG("Invalid data alignment");
2171 return ERROR_TARGET_UNALIGNED_ACCESS;
2172 }
2173
2174 stlink_usb_init_buffer(handle, h->rx_ep, len);
2175
2176 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
2177 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_READMEM_16BIT;
2178 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
2179 h->cmdidx += 4;
2180 h_u16_to_le(h->cmdbuf+h->cmdidx, len);
2181 h->cmdidx += 2;
2182
2183 res = stlink_usb_xfer_noerrcheck(handle, h->databuf, len);
2184
2185 if (res != ERROR_OK)
2186 return res;
2187
2188 memcpy(buffer, h->databuf, len);
2189
2190 return stlink_usb_get_rw_status(handle);
2191 }
2192
2193 /** */
2194 static int stlink_usb_write_mem16(void *handle, uint32_t addr, uint16_t len,
2195 const uint8_t *buffer)
2196 {
2197 int res;
2198 struct stlink_usb_handle_s *h = handle;
2199
2200 assert(handle != NULL);
2201
2202 if (!(h->version.flags & STLINK_F_HAS_MEM_16BIT))
2203 return ERROR_COMMAND_NOTFOUND;
2204
2205 /* data must be a multiple of 2 and half-word aligned */
2206 if (len % 2 || addr % 2) {
2207 LOG_DEBUG("Invalid data alignment");
2208 return ERROR_TARGET_UNALIGNED_ACCESS;
2209 }
2210
2211 stlink_usb_init_buffer(handle, h->tx_ep, len);
2212
2213 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
2214 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_WRITEMEM_16BIT;
2215 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
2216 h->cmdidx += 4;
2217 h_u16_to_le(h->cmdbuf+h->cmdidx, len);
2218 h->cmdidx += 2;
2219
2220 res = stlink_usb_xfer_noerrcheck(handle, buffer, len);
2221
2222 if (res != ERROR_OK)
2223 return res;
2224
2225 return stlink_usb_get_rw_status(handle);
2226 }
2227
2228 /** */
2229 static int stlink_usb_read_mem32(void *handle, uint32_t addr, uint16_t len,
2230 uint8_t *buffer)
2231 {
2232 int res;
2233 struct stlink_usb_handle_s *h = handle;
2234
2235 assert(handle != NULL);
2236
2237 /* data must be a multiple of 4 and word aligned */
2238 if (len % 4 || addr % 4) {
2239 LOG_DEBUG("Invalid data alignment");
2240 return ERROR_TARGET_UNALIGNED_ACCESS;
2241 }
2242
2243 stlink_usb_init_buffer(handle, h->rx_ep, len);
2244
2245 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
2246 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_READMEM_32BIT;
2247 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
2248 h->cmdidx += 4;
2249 h_u16_to_le(h->cmdbuf+h->cmdidx, len);
2250 h->cmdidx += 2;
2251
2252 res = stlink_usb_xfer_noerrcheck(handle, h->databuf, len);
2253
2254 if (res != ERROR_OK)
2255 return res;
2256
2257 memcpy(buffer, h->databuf, len);
2258
2259 return stlink_usb_get_rw_status(handle);
2260 }
2261
2262 /** */
2263 static int stlink_usb_write_mem32(void *handle, uint32_t addr, uint16_t len,
2264 const uint8_t *buffer)
2265 {
2266 int res;
2267 struct stlink_usb_handle_s *h = handle;
2268
2269 assert(handle != NULL);
2270
2271 /* data must be a multiple of 4 and word aligned */
2272 if (len % 4 || addr % 4) {
2273 LOG_DEBUG("Invalid data alignment");
2274 return ERROR_TARGET_UNALIGNED_ACCESS;
2275 }
2276
2277 stlink_usb_init_buffer(handle, h->tx_ep, len);
2278
2279 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
2280 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_WRITEMEM_32BIT;
2281 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
2282 h->cmdidx += 4;
2283 h_u16_to_le(h->cmdbuf+h->cmdidx, len);
2284 h->cmdidx += 2;
2285
2286 res = stlink_usb_xfer_noerrcheck(handle, buffer, len);
2287
2288 if (res != ERROR_OK)
2289 return res;
2290
2291 return stlink_usb_get_rw_status(handle);
2292 }
2293
2294 static uint32_t stlink_max_block_size(uint32_t tar_autoincr_block, uint32_t address)
2295 {
2296 uint32_t max_tar_block = (tar_autoincr_block - ((tar_autoincr_block - 1) & address));
2297 if (max_tar_block == 0)
2298 max_tar_block = 4;
2299 return max_tar_block;
2300 }
2301
2302 static int stlink_usb_read_mem(void *handle, uint32_t addr, uint32_t size,
2303 uint32_t count, uint8_t *buffer)
2304 {
2305 int retval = ERROR_OK;
2306 uint32_t bytes_remaining;
2307 int retries = 0;
2308 struct stlink_usb_handle_s *h = handle;
2309
2310 /* calculate byte count */
2311 count *= size;
2312
2313 /* switch to 8 bit if stlink does not support 16 bit memory read */
2314 if (size == 2 && !(h->version.flags & STLINK_F_HAS_MEM_16BIT))
2315 size = 1;
2316
2317 while (count) {
2318
2319 bytes_remaining = (size != 1) ?
2320 stlink_max_block_size(h->max_mem_packet, addr) : stlink_usb_block(h);
2321
2322 if (count < bytes_remaining)
2323 bytes_remaining = count;
2324
2325 if (h->st_mode == STLINK_MODE_DEBUG_SWIM) {
2326 retval = stlink_swim_readbytes(handle, addr, bytes_remaining, buffer);
2327 if (retval != ERROR_OK)
2328 return retval;
2329 } else
2330 /*
2331 * all stlink support 8/32bit memory read/writes and only from
2332 * stlink V2J26 there is support for 16 bit memory read/write.
2333 * Honour 32 bit and, if possible, 16 bit too. Otherwise, handle
2334 * as 8bit access.
2335 */
2336 if (size != 1) {
2337
2338 /* When in jtag mode the stlink uses the auto-increment functionality.
2339 * However it expects us to pass the data correctly, this includes
2340 * alignment and any page boundaries. We already do this as part of the
2341 * adi_v5 implementation, but the stlink is a hla adapter and so this
2342 * needs implementing manually.
2343 * currently this only affects jtag mode, according to ST they do single
2344 * access in SWD mode - but this may change and so we do it for both modes */
2345
2346 /* we first need to check for any unaligned bytes */
2347 if (addr & (size - 1)) {
2348
2349 uint32_t head_bytes = size - (addr & (size - 1));
2350 retval = stlink_usb_read_mem8(handle, addr, head_bytes, buffer);
2351 if (retval == ERROR_WAIT && retries < MAX_WAIT_RETRIES) {
2352 usleep((1<<retries++) * 1000);
2353 continue;
2354 }
2355 if (retval != ERROR_OK)
2356 return retval;
2357 buffer += head_bytes;
2358 addr += head_bytes;
2359 count -= head_bytes;
2360 bytes_remaining -= head_bytes;
2361 }
2362
2363 if (bytes_remaining & (size - 1))
2364 retval = stlink_usb_read_mem(handle, addr, 1, bytes_remaining, buffer);
2365 else if (size == 2)
2366 retval = stlink_usb_read_mem16(handle, addr, bytes_remaining, buffer);
2367 else
2368 retval = stlink_usb_read_mem32(handle, addr, bytes_remaining, buffer);
2369 } else
2370 retval = stlink_usb_read_mem8(handle, addr, bytes_remaining, buffer);
2371
2372 if (retval == ERROR_WAIT && retries < MAX_WAIT_RETRIES) {
2373 usleep((1<<retries++) * 1000);
2374 continue;
2375 }
2376 if (retval != ERROR_OK)
2377 return retval;
2378
2379 buffer += bytes_remaining;
2380 addr += bytes_remaining;
2381 count -= bytes_remaining;
2382 }
2383
2384 return retval;
2385 }
2386
2387 static int stlink_usb_write_mem(void *handle, uint32_t addr, uint32_t size,
2388 uint32_t count, const uint8_t *buffer)
2389 {
2390 int retval = ERROR_OK;
2391 uint32_t bytes_remaining;
2392 int retries = 0;
2393 struct stlink_usb_handle_s *h = handle;
2394
2395 /* calculate byte count */
2396 count *= size;
2397
2398 /* switch to 8 bit if stlink does not support 16 bit memory read */
2399 if (size == 2 && !(h->version.flags & STLINK_F_HAS_MEM_16BIT))
2400 size = 1;
2401
2402 while (count) {
2403
2404 bytes_remaining = (size != 1) ?
2405 stlink_max_block_size(h->max_mem_packet, addr) : stlink_usb_block(h);
2406
2407 if (count < bytes_remaining)
2408 bytes_remaining = count;
2409
2410 if (h->st_mode == STLINK_MODE_DEBUG_SWIM) {
2411 retval = stlink_swim_writebytes(handle, addr, bytes_remaining, buffer);
2412 if (retval != ERROR_OK)
2413 return retval;
2414 } else
2415 /*
2416 * all stlink support 8/32bit memory read/writes and only from
2417 * stlink V2J26 there is support for 16 bit memory read/write.
2418 * Honour 32 bit and, if possible, 16 bit too. Otherwise, handle
2419 * as 8bit access.
2420 */
2421 if (size != 1) {
2422
2423 /* When in jtag mode the stlink uses the auto-increment functionality.
2424 * However it expects us to pass the data correctly, this includes
2425 * alignment and any page boundaries. We already do this as part of the
2426 * adi_v5 implementation, but the stlink is a hla adapter and so this
2427 * needs implementing manually.
2428 * currently this only affects jtag mode, according to ST they do single
2429 * access in SWD mode - but this may change and so we do it for both modes */
2430
2431 /* we first need to check for any unaligned bytes */
2432 if (addr & (size - 1)) {
2433
2434 uint32_t head_bytes = size - (addr & (size - 1));
2435 retval = stlink_usb_write_mem8(handle, addr, head_bytes, buffer);
2436 if (retval == ERROR_WAIT && retries < MAX_WAIT_RETRIES) {
2437 usleep((1<<retries++) * 1000);
2438 continue;
2439 }
2440 if (retval != ERROR_OK)
2441 return retval;
2442 buffer += head_bytes;
2443 addr += head_bytes;
2444 count -= head_bytes;
2445 bytes_remaining -= head_bytes;
2446 }
2447
2448 if (bytes_remaining & (size - 1))
2449 retval = stlink_usb_write_mem(handle, addr, 1, bytes_remaining, buffer);
2450 else if (size == 2)
2451 retval = stlink_usb_write_mem16(handle, addr, bytes_remaining, buffer);
2452 else
2453 retval = stlink_usb_write_mem32(handle, addr, bytes_remaining, buffer);
2454
2455 } else
2456 retval = stlink_usb_write_mem8(handle, addr, bytes_remaining, buffer);
2457 if (retval == ERROR_WAIT && retries < MAX_WAIT_RETRIES) {
2458 usleep((1<<retries++) * 1000);
2459 continue;
2460 }
2461 if (retval != ERROR_OK)
2462 return retval;
2463
2464 buffer += bytes_remaining;
2465 addr += bytes_remaining;
2466 count -= bytes_remaining;
2467 }
2468
2469 return retval;
2470 }
2471
2472 /** */
2473 static int stlink_usb_override_target(const char *targetname)
2474 {
2475 return !strcmp(targetname, "cortex_m");
2476 }
2477
2478 static int stlink_speed_swim(void *handle, int khz, bool query)
2479 {
2480 int retval;
2481
2482 /*
2483 we only have low and high speed...
2484 before changing speed the SWIM_CSR HS bit
2485 must be updated
2486 */
2487 if (!query) {
2488 retval = stlink_swim_speed(handle, (khz < SWIM_FREQ_HIGH) ? 0 : 1);
2489 if (retval != ERROR_OK)
2490 LOG_ERROR("Unable to set adapter speed");
2491 }
2492
2493 return (khz < SWIM_FREQ_HIGH) ? SWIM_FREQ_LOW : SWIM_FREQ_HIGH;
2494 }
2495
2496 static int stlink_match_speed_map(const struct speed_map *map, unsigned int map_size, int khz, bool query)
2497 {
2498 unsigned int i;
2499 int speed_index = -1;
2500 int speed_diff = INT_MAX;
2501 int last_valid_speed = -1;
2502 bool match = true;
2503
2504 for (i = 0; i < map_size; i++) {
2505 if (!map[i].speed)
2506 continue;
2507 last_valid_speed = i;
2508 if (khz == map[i].speed) {
2509 speed_index = i;
2510 break;
2511 } else {
2512 int current_diff = khz - map[i].speed;
2513 /* get abs value for comparison */
2514 current_diff = (current_diff > 0) ? current_diff : -current_diff;
2515 if ((current_diff < speed_diff) && khz >= map[i].speed) {
2516 speed_diff = current_diff;
2517 speed_index = i;
2518 }
2519 }
2520 }
2521
2522 if (speed_index == -1) {
2523 /* this will only be here if we cannot match the slow speed.
2524 * use the slowest speed we support.*/
2525 speed_index = last_valid_speed;
2526 match = false;
2527 } else if (i == map_size)
2528 match = false;
2529
2530 if (!match && query) {
2531 LOG_INFO("Unable to match requested speed %d kHz, using %d kHz",
2532 khz, map[speed_index].speed);
2533 }
2534
2535 return speed_index;
2536 }
2537
2538 static int stlink_speed_swd(void *handle, int khz, bool query)
2539 {
2540 int speed_index;
2541 struct stlink_usb_handle_s *h = handle;
2542
2543 /* old firmware cannot change it */
2544 if (!(h->version.flags & STLINK_F_HAS_SWD_SET_FREQ))
2545 return khz;
2546
2547 speed_index = stlink_match_speed_map(stlink_khz_to_speed_map_swd,
2548 ARRAY_SIZE(stlink_khz_to_speed_map_swd), khz, query);
2549
2550 if (!query) {
2551 int result = stlink_usb_set_swdclk(h, stlink_khz_to_speed_map_swd[speed_index].speed_divisor);
2552 if (result != ERROR_OK) {
2553 LOG_ERROR("Unable to set adapter speed");
2554 return khz;
2555 }
2556 }
2557
2558 return stlink_khz_to_speed_map_swd[speed_index].speed;
2559 }
2560
2561 static int stlink_speed_jtag(void *handle, int khz, bool query)
2562 {
2563 int speed_index;
2564 struct stlink_usb_handle_s *h = handle;
2565
2566 /* old firmware cannot change it */
2567 if (!(h->version.flags & STLINK_F_HAS_JTAG_SET_FREQ))
2568 return khz;
2569
2570 speed_index = stlink_match_speed_map(stlink_khz_to_speed_map_jtag,
2571 ARRAY_SIZE(stlink_khz_to_speed_map_jtag), khz, query);
2572
2573 if (!query) {
2574 int result = stlink_usb_set_jtagclk(h, stlink_khz_to_speed_map_jtag[speed_index].speed_divisor);
2575 if (result != ERROR_OK) {
2576 LOG_ERROR("Unable to set adapter speed");
2577 return khz;
2578 }
2579 }
2580
2581 return stlink_khz_to_speed_map_jtag[speed_index].speed;
2582 }
2583
2584 void stlink_dump_speed_map(const struct speed_map *map, unsigned int map_size)
2585 {
2586 unsigned int i;
2587
2588 LOG_DEBUG("Supported clock speeds are:");
2589 for (i = 0; i < map_size; i++)
2590 if (map[i].speed)
2591 LOG_DEBUG("%d kHz", map[i].speed);
2592 }
2593
2594 static int stlink_get_com_freq(void *handle, bool is_jtag, struct speed_map *map)
2595 {
2596 struct stlink_usb_handle_s *h = handle;
2597 int i;
2598
2599 if (h->version.jtag_api != STLINK_JTAG_API_V3) {
2600 LOG_ERROR("Unknown command");
2601 return 0;
2602 }
2603
2604 stlink_usb_init_buffer(handle, h->rx_ep, 16);
2605
2606 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
2607 h->cmdbuf[h->cmdidx++] = STLINK_APIV3_GET_COM_FREQ;
2608 h->cmdbuf[h->cmdidx++] = is_jtag ? 1 : 0;
2609
2610 int res = stlink_usb_xfer_errcheck(handle, h->databuf, 52);
2611
2612 int size = h->databuf[8];
2613
2614 if (size > STLINK_V3_MAX_FREQ_NB)
2615 size = STLINK_V3_MAX_FREQ_NB;
2616
2617 for (i = 0; i < size; i++) {
2618 map[i].speed = le_to_h_u32(&h->databuf[12 + 4 * i]);
2619 map[i].speed_divisor = i;
2620 }
2621
2622 /* set to zero all the next entries */
2623 for (i = size; i < STLINK_V3_MAX_FREQ_NB; i++)
2624 map[i].speed = 0;
2625
2626 return res;
2627 }
2628
2629 static int stlink_set_com_freq(void *handle, bool is_jtag, unsigned int frequency)
2630 {
2631 struct stlink_usb_handle_s *h = handle;
2632
2633 if (h->version.jtag_api != STLINK_JTAG_API_V3) {
2634 LOG_ERROR("Unknown command");
2635 return 0;
2636 }
2637
2638 stlink_usb_init_buffer(handle, h->rx_ep, 16);
2639
2640 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
2641 h->cmdbuf[h->cmdidx++] = STLINK_APIV3_SET_COM_FREQ;
2642 h->cmdbuf[h->cmdidx++] = is_jtag ? 1 : 0;
2643 h->cmdbuf[h->cmdidx++] = 0;
2644
2645 h_u32_to_le(&h->cmdbuf[4], frequency);
2646
2647 return stlink_usb_xfer_errcheck(handle, h->databuf, 8);
2648 }
2649
2650 static int stlink_speed_v3(void *handle, bool is_jtag, int khz, bool query)
2651 {
2652 struct stlink_usb_handle_s *h = handle;
2653 int speed_index;
2654 struct speed_map map[STLINK_V3_MAX_FREQ_NB];
2655
2656 stlink_get_com_freq(h, is_jtag, map);
2657
2658 speed_index = stlink_match_speed_map(map, ARRAY_SIZE(map), khz, query);
2659
2660 if (!query) {
2661 int result = stlink_set_com_freq(h, is_jtag, map[speed_index].speed);
2662 if (result != ERROR_OK) {
2663 LOG_ERROR("Unable to set adapter speed");
2664 return khz;
2665 }
2666 }
2667 return map[speed_index].speed;
2668 }
2669
2670 static int stlink_speed(void *handle, int khz, bool query)
2671 {
2672 struct stlink_usb_handle_s *h = handle;
2673
2674 if (!handle)
2675 return khz;
2676
2677 switch (h->st_mode) {
2678 case STLINK_MODE_DEBUG_SWIM:
2679 return stlink_speed_swim(handle, khz, query);
2680 case STLINK_MODE_DEBUG_SWD:
2681 if (h->version.jtag_api == STLINK_JTAG_API_V3)
2682 return stlink_speed_v3(handle, false, khz, query);
2683 else
2684 return stlink_speed_swd(handle, khz, query);
2685 break;
2686 case STLINK_MODE_DEBUG_JTAG:
2687 if (h->version.jtag_api == STLINK_JTAG_API_V3)
2688 return stlink_speed_v3(handle, true, khz, query);
2689 else
2690 return stlink_speed_jtag(handle, khz, query);
2691 break;
2692 default:
2693 break;
2694 }
2695
2696 return khz;
2697 }
2698
2699 /** */
2700 static int stlink_usb_close(void *handle)
2701 {
2702 int res;
2703 uint8_t mode;
2704 enum stlink_mode emode;
2705 struct stlink_usb_handle_s *h = handle;
2706
2707 if (h && h->fd)
2708 res = stlink_usb_current_mode(handle, &mode);
2709 else
2710 res = ERROR_FAIL;
2711 /* do not exit if return code != ERROR_OK,
2712 it prevents us from closing jtag_libusb */
2713
2714 if (res == ERROR_OK) {
2715 /* try to exit current mode */
2716 switch (mode) {
2717 case STLINK_DEV_DFU_MODE:
2718 emode = STLINK_MODE_DFU;
2719 break;
2720 case STLINK_DEV_DEBUG_MODE:
2721 emode = STLINK_MODE_DEBUG_SWD;
2722 break;
2723 case STLINK_DEV_SWIM_MODE:
2724 emode = STLINK_MODE_DEBUG_SWIM;
2725 break;
2726 case STLINK_DEV_BOOTLOADER_MODE:
2727 case STLINK_DEV_MASS_MODE:
2728 default:
2729 emode = STLINK_MODE_UNKNOWN;
2730 break;
2731 }
2732
2733 if (emode != STLINK_MODE_UNKNOWN)
2734 stlink_usb_mode_leave(handle, emode);
2735 /* do not check return code, it prevent
2736 us from closing jtag_libusb */
2737 }
2738
2739 if (h && h->fd)
2740 jtag_libusb_close(h->fd);
2741
2742 free(h);
2743
2744 return ERROR_OK;
2745 }
2746
2747 /* Compute ST-Link serial number from the device descriptor
2748 * this function will help to work-around a bug in old ST-Link/V2 DFU
2749 * the buggy DFU returns an incorrect serial in the USB descriptor
2750 * example for the following serial "57FF72067265575742132067"
2751 * - the correct descriptor serial is:
2752 * 0x32, 0x03, 0x35, 0x00, 0x37, 0x00, 0x46, 0x00, 0x46, 0x00, 0x37, 0x00, 0x32, 0x00 ...
2753 * this contains the length (0x32 = 50), the type (0x3 = DT_STRING) and the serial in unicode format
2754 * the serial part is: 0x0035, 0x0037, 0x0046, 0x0046, 0x0037, 0x0032 ... >> 57FF72 ...
2755 * this format could be read correctly by 'libusb_get_string_descriptor_ascii'
2756 * so this case is managed by libusb_helper::string_descriptor_equal
2757 * - the buggy DFU is not doing any unicode conversion and returns a raw serial data in the descriptor
2758 * 0x1a, 0x03, 0x57, 0x00, 0xFF, 0x00, 0x72, 0x00 ...
2759 * >> 57 FF 72 ...
2760 * based on the length (0x1a = 26) we could easily decide if we have to fixup the serial
2761 * and then we have just to convert the raw data into printable characters using sprintf
2762 */
2763 char *stlink_usb_get_alternate_serial(libusb_device_handle *device,
2764 struct libusb_device_descriptor *dev_desc)
2765 {
2766 int usb_retval;
2767 unsigned char desc_serial[(STLINK_SERIAL_LEN + 1) * 2];
2768
2769 if (dev_desc->iSerialNumber == 0)
2770 return NULL;
2771
2772 /* get the LANGID from String Descriptor Zero */
2773 usb_retval = libusb_get_string_descriptor(device, 0, 0, desc_serial,
2774 sizeof(desc_serial));
2775
2776 if (usb_retval < LIBUSB_SUCCESS) {
2777 LOG_ERROR("libusb_get_string_descriptor() failed: %s(%d)",
2778 libusb_error_name(usb_retval), usb_retval);
2779 return NULL;
2780 } else if (usb_retval < 4) {
2781 /* the size should be least 4 bytes to contain a minimum of 1 supported LANGID */
2782 LOG_ERROR("could not get the LANGID");
2783 return NULL;
2784 }
2785
2786 uint32_t langid = desc_serial[2] | (desc_serial[3] << 8);
2787
2788 /* get the serial */
2789 usb_retval = libusb_get_string_descriptor(device, dev_desc->iSerialNumber,
2790 langid, desc_serial, sizeof(desc_serial));
2791
2792 unsigned char len = desc_serial[0];
2793
2794 if (usb_retval < LIBUSB_SUCCESS) {
2795 LOG_ERROR("libusb_get_string_descriptor() failed: %s(%d)",
2796 libusb_error_name(usb_retval), usb_retval);
2797 return NULL;
2798 } else if (desc_serial[1] != LIBUSB_DT_STRING || len > usb_retval) {
2799 LOG_ERROR("invalid string in ST-LINK USB serial descriptor");
2800 return NULL;
2801 }
2802
2803 if (len == ((STLINK_SERIAL_LEN + 1) * 2)) {
2804 /* good ST-Link adapter, this case is managed by
2805 * libusb::libusb_get_string_descriptor_ascii */
2806 return NULL;
2807 } else if (len != ((STLINK_SERIAL_LEN / 2 + 1) * 2)) {
2808 LOG_ERROR("unexpected serial length (%d) in descriptor", len);
2809 return NULL;
2810 }
2811
2812 /* else (len == 26) => buggy ST-Link */
2813
2814 char *alternate_serial = malloc((STLINK_SERIAL_LEN + 1) * sizeof(char));
2815 if (alternate_serial == NULL)
2816 return NULL;
2817
2818 for (unsigned int i = 0; i < STLINK_SERIAL_LEN; i += 2)
2819 sprintf(alternate_serial + i, "%02X", desc_serial[i + 2]);
2820
2821 alternate_serial[STLINK_SERIAL_LEN] = '\0';
2822
2823 return alternate_serial;
2824 }
2825
2826 /** */
2827 static int stlink_usb_open(struct hl_interface_param_s *param, enum stlink_mode mode, void **fd)
2828 {
2829 int err, retry_count = 1;
2830 struct stlink_usb_handle_s *h;
2831
2832 LOG_DEBUG("stlink_usb_open");
2833
2834 h = calloc(1, sizeof(struct stlink_usb_handle_s));
2835
2836 if (h == 0) {
2837 LOG_DEBUG("malloc failed");
2838 return ERROR_FAIL;
2839 }
2840
2841 h->st_mode = mode;
2842
2843 for (unsigned i = 0; param->vid[i]; i++) {
2844 LOG_DEBUG("transport: %d vid: 0x%04x pid: 0x%04x serial: %s",
2845 h->st_mode, param->vid[i], param->pid[i],
2846 param->serial ? param->serial : "");
2847 }
2848
2849 /*
2850 On certain host USB configurations(e.g. MacBook Air)
2851 STLINKv2 dongle seems to have its FW in a funky state if,
2852 after plugging it in, you try to use openocd with it more
2853 then once (by launching and closing openocd). In cases like
2854 that initial attempt to read the FW info via
2855 stlink_usb_version will fail and the device has to be reset
2856 in order to become operational.
2857 */
2858 do {
2859 if (jtag_libusb_open(param->vid, param->pid, param->serial,
2860 &h->fd, stlink_usb_get_alternate_serial) != ERROR_OK) {
2861 LOG_ERROR("open failed");
2862 goto error_open;
2863 }
2864
2865 jtag_libusb_set_configuration(h->fd, 0);
2866
2867 if (libusb_claim_interface(h->fd, 0) != ERROR_OK) {
2868 LOG_DEBUG("claim interface failed");
2869 goto error_open;
2870 }
2871
2872 /* RX EP is common for all versions */
2873 h->rx_ep = STLINK_RX_EP;
2874
2875 uint16_t pid;
2876 if (jtag_libusb_get_pid(libusb_get_device(h->fd), &pid) != ERROR_OK) {
2877 LOG_DEBUG("libusb_get_pid failed");
2878 goto error_open;
2879 }
2880
2881 /* wrap version for first read */
2882 switch (pid) {
2883 case STLINK_V1_PID:
2884 h->version.stlink = 1;
2885 h->tx_ep = STLINK_TX_EP;
2886 break;
2887 case STLINK_V3_USBLOADER_PID:
2888 case STLINK_V3E_PID:
2889 case STLINK_V3S_PID:
2890 case STLINK_V3_2VCP_PID:
2891 h->version.stlink = 3;
2892 h->tx_ep = STLINK_V2_1_TX_EP;
2893 h->trace_ep = STLINK_V2_1_TRACE_EP;
2894 break;
2895 case STLINK_V2_1_PID:
2896 case STLINK_V2_1_NO_MSD_PID:
2897 h->version.stlink = 2;
2898 h->tx_ep = STLINK_V2_1_TX_EP;
2899 h->trace_ep = STLINK_V2_1_TRACE_EP;
2900 break;
2901 default:
2902 /* fall through - we assume V2 to be the default version*/
2903 case STLINK_V2_PID:
2904 h->version.stlink = 2;
2905 h->tx_ep = STLINK_TX_EP;
2906 h->trace_ep = STLINK_TRACE_EP;
2907 break;
2908 }
2909
2910 /* get the device version */
2911 err = stlink_usb_version(h);
2912
2913 if (err == ERROR_OK) {
2914 break;
2915 } else if (h->version.stlink == 1 ||
2916 retry_count == 0) {
2917 LOG_ERROR("read version failed");
2918 goto error_open;
2919 } else {
2920 err = libusb_release_interface(h->fd, 0);
2921 if (err != ERROR_OK) {
2922 LOG_ERROR("release interface failed");
2923 goto error_open;
2924 }
2925
2926 err = libusb_reset_device(h->fd);
2927 if (err != ERROR_OK) {
2928 LOG_ERROR("reset device failed");
2929 goto error_open;
2930 }
2931
2932 jtag_libusb_close(h->fd);
2933 /*
2934 Give the device one second to settle down and
2935 reenumerate.
2936 */
2937 usleep(1 * 1000 * 1000);
2938 retry_count--;
2939 }
2940 } while (1);
2941
2942 /* check if mode is supported */
2943 err = ERROR_OK;
2944
2945 switch (h->st_mode) {
2946 case STLINK_MODE_DEBUG_SWD:
2947 if (h->version.jtag_api == STLINK_JTAG_API_V1)
2948 err = ERROR_FAIL;
2949 /* fall-through */
2950 case STLINK_MODE_DEBUG_JTAG:
2951 if (h->version.jtag == 0)
2952 err = ERROR_FAIL;
2953 break;
2954 case STLINK_MODE_DEBUG_SWIM:
2955 if (h->version.swim == 0)
2956 err = ERROR_FAIL;
2957 break;
2958 default:
2959 err = ERROR_FAIL;
2960 break;
2961 }
2962
2963 if (err != ERROR_OK) {
2964 LOG_ERROR("mode (transport) not supported by device");
2965 goto error_open;
2966 }
2967
2968 /* initialize the debug hardware */
2969 err = stlink_usb_init_mode(h, param->connect_under_reset, param->initial_interface_speed);
2970
2971 if (err != ERROR_OK) {
2972 LOG_ERROR("init mode failed (unable to connect to the target)");
2973 goto error_open;
2974 }
2975
2976 if (h->st_mode == STLINK_MODE_DEBUG_SWIM) {
2977 err = stlink_swim_enter(h);
2978 if (err != ERROR_OK) {
2979 LOG_ERROR("stlink_swim_enter_failed (unable to connect to the target)");
2980 goto error_open;
2981 }
2982 *fd = h;
2983 h->max_mem_packet = STLINK_DATA_SIZE;
2984 return ERROR_OK;
2985 }
2986
2987 /* get cpuid, so we can determine the max page size
2988 * start with a safe default */
2989 h->max_mem_packet = (1 << 10);
2990
2991 uint8_t buffer[4];
2992 err = stlink_usb_read_mem32(h, CPUID, 4, buffer);
2993 if (err == ERROR_OK) {
2994 uint32_t cpuid = le_to_h_u32(buffer);
2995 int i = (cpuid >> 4) & 0xf;
2996 if (i == 4 || i == 3) {
2997 /* Cortex-M3/M4 has 4096 bytes autoincrement range */
2998 h->max_mem_packet = (1 << 12);
2999 }
3000 }
3001
3002 LOG_DEBUG("Using TAR autoincrement: %" PRIu32, h->max_mem_packet);
3003
3004 *fd = h;
3005
3006 return ERROR_OK;
3007
3008 error_open:
3009 stlink_usb_close(h);
3010
3011 return ERROR_FAIL;
3012 }
3013
3014 static int stlink_usb_hl_open(struct hl_interface_param_s *param, void **fd)
3015 {
3016 return stlink_usb_open(param, stlink_get_mode(param->transport), fd);
3017 }
3018
3019 int stlink_config_trace(void *handle, bool enabled,
3020 enum tpiu_pin_protocol pin_protocol, uint32_t port_size,
3021 unsigned int *trace_freq, unsigned int traceclkin_freq,
3022 uint16_t *prescaler)
3023 {
3024 struct stlink_usb_handle_s *h = handle;
3025 uint16_t presc;
3026
3027 if (enabled && (!(h->version.flags & STLINK_F_HAS_TRACE) ||
3028 pin_protocol != TPIU_PIN_PROTOCOL_ASYNC_UART)) {
3029 LOG_ERROR("The attached ST-LINK version doesn't support this trace mode");
3030 return ERROR_FAIL;
3031 }
3032
3033 if (!enabled) {
3034 stlink_usb_trace_disable(h);
3035 return ERROR_OK;
3036 }
3037
3038 if (*trace_freq > STLINK_TRACE_MAX_HZ) {
3039 LOG_ERROR("ST-LINK doesn't support SWO frequency higher than %u",
3040 STLINK_TRACE_MAX_HZ);
3041 return ERROR_FAIL;
3042 }
3043
3044 stlink_usb_trace_disable(h);
3045
3046 if (!*trace_freq)
3047 *trace_freq = STLINK_TRACE_MAX_HZ;
3048
3049 presc = traceclkin_freq / *trace_freq;
3050
3051 if (traceclkin_freq % *trace_freq > 0)
3052 presc++;
3053
3054 if (presc > TPIU_ACPR_MAX_SWOSCALER) {
3055 LOG_ERROR("SWO frequency is not suitable. Please choose a different "
3056 "frequency.");
3057 return ERROR_FAIL;
3058 }
3059
3060 *prescaler = presc;
3061 h->trace.source_hz = *trace_freq;
3062
3063 return stlink_usb_trace_enable(h);
3064 }
3065
3066 /** */
3067 static int stlink_usb_init_access_port(void *handle, unsigned char ap_num)
3068 {
3069 struct stlink_usb_handle_s *h = handle;
3070
3071 assert(handle != NULL);
3072
3073 if (!(h->version.flags & STLINK_F_HAS_AP_INIT))
3074 return ERROR_COMMAND_NOTFOUND;
3075
3076 LOG_DEBUG_IO("init ap_num = %d", ap_num);
3077 stlink_usb_init_buffer(handle, h->rx_ep, 16);
3078 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
3079 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_INIT_AP;
3080 h->cmdbuf[h->cmdidx++] = ap_num;
3081
3082 return stlink_usb_xfer_errcheck(handle, h->databuf, 2);
3083 }
3084
3085 /** */
3086 static int stlink_usb_close_access_port(void *handle, unsigned char ap_num)
3087 {
3088 struct stlink_usb_handle_s *h = handle;
3089
3090 assert(handle != NULL);
3091
3092 if (!(h->version.flags & STLINK_F_HAS_AP_INIT))
3093 return ERROR_COMMAND_NOTFOUND;
3094
3095 LOG_DEBUG_IO("close ap_num = %d", ap_num);
3096 stlink_usb_init_buffer(handle, h->rx_ep, 16);
3097 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
3098 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_CLOSE_AP_DBG;
3099 h->cmdbuf[h->cmdidx++] = ap_num;
3100
3101 return stlink_usb_xfer_errcheck(handle, h->databuf, 2);
3102 }
3103
3104 /** */
3105 static int stlink_read_dap_register(void *handle, unsigned short dap_port,
3106 unsigned short addr, uint32_t *val)
3107 {
3108 struct stlink_usb_handle_s *h = handle;
3109 int retval;
3110
3111 assert(handle != NULL);
3112
3113 if (!(h->version.flags & STLINK_F_HAS_DAP_REG))
3114 return ERROR_COMMAND_NOTFOUND;
3115
3116 stlink_usb_init_buffer(handle, h->rx_ep, 16);
3117 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
3118 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_READ_DAP_REG;
3119 h_u16_to_le(&h->cmdbuf[2], dap_port);
3120 h_u16_to_le(&h->cmdbuf[4], addr);
3121
3122 retval = stlink_usb_xfer_errcheck(handle, h->databuf, 8);
3123 *val = le_to_h_u32(h->databuf + 4);
3124 LOG_DEBUG_IO("dap_port_read = %d, addr = 0x%x, value = 0x%x", dap_port, addr, *val);
3125 return retval;
3126 }
3127
3128 /** */
3129 static int stlink_write_dap_register(void *handle, unsigned short dap_port,
3130 unsigned short addr, uint32_t val)
3131 {
3132 struct stlink_usb_handle_s *h = handle;
3133
3134 assert(handle != NULL);
3135
3136 if (!(h->version.flags & STLINK_F_HAS_DAP_REG))
3137 return ERROR_COMMAND_NOTFOUND;
3138
3139 LOG_DEBUG_IO("dap_write port = %d, addr = 0x%x, value = 0x%x", dap_port, addr, val);
3140 stlink_usb_init_buffer(handle, h->rx_ep, 16);
3141 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
3142 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_WRITE_DAP_REG;
3143 h_u16_to_le(&h->cmdbuf[2], dap_port);
3144 h_u16_to_le(&h->cmdbuf[4], addr);
3145 h_u32_to_le(&h->cmdbuf[6], val);
3146 return stlink_usb_xfer_errcheck(handle, h->databuf, 2);
3147 }
3148
3149 /** */
3150 struct hl_layout_api_s stlink_usb_layout_api = {
3151 /** */
3152 .open = stlink_usb_hl_open,
3153 /** */
3154 .close = stlink_usb_close,
3155 /** */
3156 .idcode = stlink_usb_idcode,
3157 /** */
3158 .state = stlink_usb_state,
3159 /** */
3160 .reset = stlink_usb_reset,
3161 /** */
3162 .assert_srst = stlink_usb_assert_srst,
3163 /** */
3164 .run = stlink_usb_run,
3165 /** */
3166 .halt = stlink_usb_halt,
3167 /** */
3168 .step = stlink_usb_step,
3169 /** */
3170 .read_regs = stlink_usb_read_regs,
3171 /** */
3172 .read_reg = stlink_usb_read_reg,
3173 /** */
3174 .write_reg = stlink_usb_write_reg,
3175 /** */
3176 .read_mem = stlink_usb_read_mem,
3177 /** */
3178 .write_mem = stlink_usb_write_mem,
3179 /** */
3180 .write_debug_reg = stlink_usb_write_debug_reg,
3181 /** */
3182 .override_target = stlink_usb_override_target,
3183 /** */
3184 .speed = stlink_speed,
3185 /** */
3186 .config_trace = stlink_config_trace,
3187 /** */
3188 .poll_trace = stlink_usb_trace_read,
3189 };
3190
3191 /*****************************************************************************
3192 * DAP direct interface
3193 */
3194
3195 static struct stlink_usb_handle_s *stlink_dap_handle;
3196 static struct hl_interface_param_s stlink_dap_param;
3197 static DECLARE_BITMAP(opened_ap, DP_APSEL_MAX + 1);
3198 static int stlink_dap_error = ERROR_OK;
3199
3200 static int stlink_dap_op_queue_dp_read(struct adiv5_dap *dap, unsigned reg,
3201 uint32_t *data);
3202
3203 /** */
3204 static int stlink_dap_record_error(int error)
3205 {
3206 if (stlink_dap_error == ERROR_OK)
3207 stlink_dap_error = error;
3208 return ERROR_OK;
3209 }
3210
3211 /** */
3212 static int stlink_dap_get_and_clear_error(void)
3213 {
3214 int retval = stlink_dap_error;
3215 stlink_dap_error = ERROR_OK;
3216 return retval;
3217 }
3218
3219 /** */
3220 static int stlink_dap_open_ap(unsigned short apsel)
3221 {
3222 int retval;
3223
3224 /* nothing to do on old versions */
3225 if (!(stlink_dap_handle->version.flags & STLINK_F_HAS_AP_INIT))
3226 return ERROR_OK;
3227
3228 if (apsel > DP_APSEL_MAX)
3229 return ERROR_FAIL;
3230
3231 if (test_bit(apsel, opened_ap))
3232 return ERROR_OK;
3233
3234 retval = stlink_usb_init_access_port(stlink_dap_handle, apsel);
3235 if (retval != ERROR_OK)
3236 return retval;
3237
3238 LOG_DEBUG("AP %d enabled", apsel);
3239 set_bit(apsel, opened_ap);
3240 return ERROR_OK;
3241 }
3242
3243 /** */
3244 static int stlink_dap_closeall_ap(void)
3245 {
3246 int retval, apsel;
3247
3248 /* nothing to do on old versions */
3249 if (!(stlink_dap_handle->version.flags & STLINK_F_HAS_AP_INIT))
3250 return ERROR_OK;
3251
3252 for (apsel = 0; apsel <= DP_APSEL_MAX; apsel++) {
3253 if (!test_bit(apsel, opened_ap))
3254 continue;
3255 retval = stlink_usb_close_access_port(stlink_dap_handle, apsel);
3256 if (retval != ERROR_OK)
3257 return retval;
3258 clear_bit(apsel, opened_ap);
3259 }
3260 return ERROR_OK;
3261 }
3262
3263 /** */
3264 static int stlink_dap_reinit_interface(void)
3265 {
3266 int retval;
3267
3268 /*
3269 * On JTAG only, it should be enough to call stlink_usb_reset(). But on
3270 * some firmware version it does not work as expected, and there is no
3271 * equivalent for SWD.
3272 * At least for now, to reset the interface quit from JTAG/SWD mode then
3273 * select the mode again.
3274 */
3275
3276 if (!stlink_dap_handle->reconnect_pending) {
3277 stlink_dap_handle->reconnect_pending = true;
3278 stlink_usb_mode_leave(stlink_dap_handle, stlink_dap_handle->st_mode);
3279 }
3280
3281 retval = stlink_usb_mode_enter(stlink_dap_handle, stlink_dap_handle->st_mode);
3282 if (retval != ERROR_OK)
3283 return retval;
3284
3285 stlink_dap_handle->reconnect_pending = false;
3286 /* on new FW, calling mode-leave closes all the opened AP; reopen them! */
3287 if (stlink_dap_handle->version.flags & STLINK_F_HAS_AP_INIT)
3288 for (int apsel = 0; apsel <= DP_APSEL_MAX; apsel++)
3289 if (test_bit(apsel, opened_ap)) {
3290 clear_bit(apsel, opened_ap);
3291 stlink_dap_open_ap(apsel);
3292 }
3293 return ERROR_OK;
3294 }
3295
3296 /** */
3297 static int stlink_dap_op_connect(struct adiv5_dap *dap)
3298 {
3299 uint32_t idcode;
3300 int retval;
3301
3302 LOG_INFO("stlink_dap_op_connect(%sconnect)", dap->do_reconnect ? "re" : "");
3303
3304 /* Check if we should reset srst already when connecting, but not if reconnecting. */
3305 if (!dap->do_reconnect) {
3306 enum reset_types jtag_reset_config = jtag_get_reset_config();
3307
3308 if (jtag_reset_config & RESET_CNCT_UNDER_SRST) {
3309 if (jtag_reset_config & RESET_SRST_NO_GATING)
3310 adapter_assert_reset();
3311 else
3312 LOG_WARNING("\'srst_nogate\' reset_config option is required");
3313 }
3314 }
3315
3316 dap->do_reconnect = false;
3317 dap_invalidate_cache(dap);
3318
3319 retval = dap_dp_init(dap);
3320 if (retval != ERROR_OK) {
3321 dap->do_reconnect = true;
3322 return retval;
3323 }
3324
3325 retval = stlink_usb_idcode(stlink_dap_handle, &idcode);
3326 if (retval == ERROR_OK)
3327 LOG_INFO("%s %#8.8" PRIx32,
3328 (stlink_dap_handle->st_mode == STLINK_MODE_DEBUG_JTAG) ? "JTAG IDCODE" : "SWD DPIDR",
3329 idcode);
3330 else
3331 dap->do_reconnect = true;
3332
3333 return retval;
3334 }
3335
3336 /** */
3337 static int stlink_dap_check_reconnect(struct adiv5_dap *dap)
3338 {
3339 int retval;
3340
3341 if (!dap->do_reconnect)
3342 return ERROR_OK;
3343
3344 retval = stlink_dap_reinit_interface();
3345 if (retval != ERROR_OK)
3346 return retval;
3347
3348 return stlink_dap_op_connect(dap);
3349 }
3350
3351 /** */
3352 static int stlink_dap_op_send_sequence(struct adiv5_dap *dap, enum swd_special_seq seq)
3353 {
3354 /* Ignore the request */
3355 return ERROR_OK;
3356 }
3357
3358 /** */
3359 static int stlink_dap_op_queue_dp_read(struct adiv5_dap *dap, unsigned reg,
3360 uint32_t *data)
3361 {
3362 uint32_t dummy;
3363 int retval;
3364
3365 if (!(stlink_dap_handle->version.flags & STLINK_F_HAS_DPBANKSEL))
3366 if (reg & 0x000000F0) {
3367 LOG_ERROR("Banked DP registers not supported in current STLink FW");
3368 return ERROR_COMMAND_NOTFOUND;
3369 }
3370
3371 retval = stlink_dap_check_reconnect(dap);
3372 if (retval != ERROR_OK)
3373 return retval;
3374
3375 data = data ? : &dummy;
3376 if (stlink_dap_handle->version.flags & STLINK_F_QUIRK_JTAG_DP_READ
3377 && stlink_dap_handle->st_mode == STLINK_MODE_DEBUG_JTAG) {
3378 /* Quirk required in JTAG. Read RDBUFF to get the data */
3379 retval = stlink_read_dap_register(stlink_dap_handle,
3380 STLINK_DEBUG_PORT_ACCESS, reg, &dummy);
3381 if (retval == ERROR_OK)
3382 retval = stlink_read_dap_register(stlink_dap_handle,
3383 STLINK_DEBUG_PORT_ACCESS, DP_RDBUFF, data);
3384 } else {
3385 retval = stlink_read_dap_register(stlink_dap_handle,
3386 STLINK_DEBUG_PORT_ACCESS, reg, data);
3387 }
3388
3389 return stlink_dap_record_error(retval);
3390 }
3391
3392 /** */
3393 static int stlink_dap_op_queue_dp_write(struct adiv5_dap *dap, unsigned reg,
3394 uint32_t data)
3395 {
3396 int retval;
3397
3398 if (!(stlink_dap_handle->version.flags & STLINK_F_HAS_DPBANKSEL))
3399 if (reg & 0x000000F0) {
3400 LOG_ERROR("Banked DP registers not supported in current STLink FW");
3401 return ERROR_COMMAND_NOTFOUND;
3402 }
3403
3404 if (reg == DP_SELECT && (data & DP_SELECT_DPBANK) != 0) {
3405 /* ignored if STLINK_F_HAS_DPBANKSEL, not properly managed otherwise */
3406 LOG_DEBUG("Ignoring DPBANKSEL while write SELECT");
3407 data &= ~DP_SELECT_DPBANK;
3408 }
3409
3410 retval = stlink_dap_check_reconnect(dap);
3411 if (retval != ERROR_OK)
3412 return retval;
3413
3414 /* ST-Link does not like that we set CORUNDETECT */
3415 if (reg == DP_CTRL_STAT)
3416 data &= ~CORUNDETECT;
3417
3418 retval = stlink_write_dap_register(stlink_dap_handle,
3419 STLINK_DEBUG_PORT_ACCESS, reg, data);
3420 return stlink_dap_record_error(retval);
3421 }
3422
3423 /** */
3424 static int stlink_dap_op_queue_ap_read(struct adiv5_ap *ap, unsigned reg,
3425 uint32_t *data)
3426 {
3427 struct adiv5_dap *dap = ap->dap;
3428 uint32_t dummy;
3429 int retval;
3430
3431 retval = stlink_dap_check_reconnect(dap);
3432 if (retval != ERROR_OK)
3433 return retval;
3434
3435 if (reg != AP_REG_IDR) {
3436 retval = stlink_dap_open_ap(ap->ap_num);
3437 if (retval != ERROR_OK)
3438 return retval;
3439 }
3440 data = data ? : &dummy;
3441 retval = stlink_read_dap_register(stlink_dap_handle, ap->ap_num, reg,
3442 data);
3443 dap->stlink_flush_ap_write = false;
3444 return stlink_dap_record_error(retval);
3445 }
3446
3447 /** */
3448 static int stlink_dap_op_queue_ap_write(struct adiv5_ap *ap, unsigned reg,
3449 uint32_t data)
3450 {
3451 struct adiv5_dap *dap = ap->dap;
3452 int retval;
3453
3454 retval = stlink_dap_check_reconnect(dap);
3455 if (retval != ERROR_OK)
3456 return retval;
3457
3458 retval = stlink_dap_open_ap(ap->ap_num);
3459 if (retval != ERROR_OK)
3460 return retval;
3461
3462 retval = stlink_write_dap_register(stlink_dap_handle, ap->ap_num, reg,
3463 data);
3464 dap->stlink_flush_ap_write = true;
3465 return stlink_dap_record_error(retval);
3466 }
3467
3468 /** */
3469 static int stlink_dap_op_queue_ap_abort(struct adiv5_dap *dap, uint8_t *ack)
3470 {
3471 LOG_WARNING("stlink_dap_op_queue_ap_abort()");
3472 return ERROR_OK;
3473 }
3474
3475 /** */
3476 static int stlink_dap_op_run(struct adiv5_dap *dap)
3477 {
3478 uint32_t ctrlstat, pwrmask;
3479 int retval, saved_retval;
3480
3481 /* Here no LOG_DEBUG. This is called continuously! */
3482
3483 /*
3484 * ST-Link returns immediately after a DAP write, without waiting for it
3485 * to complete.
3486 * Run a dummy read to DP_RDBUFF, as suggested in
3487 * http://infocenter.arm.com/help/topic/com.arm.doc.faqs/ka16363.html
3488 */
3489 if (dap->stlink_flush_ap_write) {
3490 dap->stlink_flush_ap_write = false;
3491 retval = stlink_dap_op_queue_dp_read(dap, DP_RDBUFF, NULL);
3492 if (retval != ERROR_OK) {
3493 dap->do_reconnect = true;
3494 return retval;
3495 }
3496 }
3497
3498 saved_retval = stlink_dap_get_and_clear_error();
3499
3500 retval = stlink_dap_op_queue_dp_read(dap, DP_CTRL_STAT, &ctrlstat);
3501 if (retval != ERROR_OK) {
3502 dap->do_reconnect = true;
3503 return retval;
3504 }
3505 retval = stlink_dap_get_and_clear_error();
3506 if (retval != ERROR_OK) {
3507 LOG_ERROR("Fail reading CTRL/STAT register. Force reconnect");
3508 dap->do_reconnect = true;
3509 return retval;
3510 }
3511
3512 if (ctrlstat & SSTICKYERR) {
3513 if (stlink_dap_handle->st_mode == STLINK_MODE_DEBUG_JTAG)
3514 retval = stlink_dap_op_queue_dp_write(dap, DP_CTRL_STAT,
3515 ctrlstat & (dap->dp_ctrl_stat | SSTICKYERR));
3516 else
3517 retval = stlink_dap_op_queue_dp_write(dap, DP_ABORT, STKERRCLR);
3518 if (retval != ERROR_OK) {
3519 dap->do_reconnect = true;
3520 return retval;
3521 }
3522 retval = stlink_dap_get_and_clear_error();
3523 if (retval != ERROR_OK) {
3524 dap->do_reconnect = true;
3525 return retval;
3526 }
3527 }
3528
3529 /* check for power lost */
3530 pwrmask = dap->dp_ctrl_stat & (CDBGPWRUPREQ | CSYSPWRUPREQ);
3531 if ((ctrlstat & pwrmask) != pwrmask)
3532 dap->do_reconnect = true;
3533
3534 return saved_retval;
3535 }
3536
3537 /** */
3538 static void stlink_dap_op_quit(struct adiv5_dap *dap)
3539 {
3540 int retval;
3541
3542 retval = stlink_dap_closeall_ap();
3543 if (retval != ERROR_OK)
3544 LOG_ERROR("Error closing APs");
3545 }
3546
3547 static int stlink_swim_op_srst(void)
3548 {
3549 return stlink_usb_reset(stlink_dap_handle);
3550 }
3551
3552 static int stlink_swim_op_read_mem(uint32_t addr, uint32_t size,
3553 uint32_t count, uint8_t *buffer)
3554 {
3555 return stlink_usb_read_mem(stlink_dap_handle, addr, size, count, buffer);
3556 }
3557
3558 static int stlink_swim_op_write_mem(uint32_t addr, uint32_t size,
3559 uint32_t count, const uint8_t *buffer)
3560 {
3561 return stlink_usb_write_mem(stlink_dap_handle, addr, size, count, buffer);
3562 }
3563
3564 static int stlink_swim_op_reconnect(void)
3565 {
3566 return stlink_usb_state(stlink_dap_handle);
3567 }
3568
3569 static int stlink_dap_config_trace(bool enabled,
3570 enum tpiu_pin_protocol pin_protocol, uint32_t port_size,
3571 unsigned int *trace_freq, unsigned int traceclkin_freq,
3572 uint16_t *prescaler)
3573 {
3574 return stlink_config_trace(stlink_dap_handle, enabled, pin_protocol,
3575 port_size, trace_freq, traceclkin_freq,
3576 prescaler);
3577 }
3578
3579 static int stlink_dap_trace_read(uint8_t *buf, size_t *size)
3580 {
3581 return stlink_usb_trace_read(stlink_dap_handle, buf, size);
3582 }
3583
3584 /** */
3585 COMMAND_HANDLER(stlink_dap_serial_command)
3586 {
3587 LOG_DEBUG("stlink_dap_serial_command");
3588
3589 if (CMD_ARGC != 1) {
3590 LOG_ERROR("Expected exactly one argument for \"st-link serial <serial-number>\".");
3591 return ERROR_COMMAND_SYNTAX_ERROR;
3592 }
3593
3594 if (stlink_dap_param.serial) {
3595 LOG_WARNING("Command \"st-link serial\" already used. Replacing previous value");
3596 free((void *)stlink_dap_param.serial);
3597 }
3598
3599 stlink_dap_param.serial = strdup(CMD_ARGV[0]);
3600 return ERROR_OK;
3601 }
3602
3603 /** */
3604 COMMAND_HANDLER(stlink_dap_vid_pid)
3605 {
3606 unsigned int i, max_usb_ids = HLA_MAX_USB_IDS;
3607
3608 if (CMD_ARGC > max_usb_ids * 2) {
3609 LOG_WARNING("ignoring extra IDs in vid_pid "
3610 "(maximum is %d pairs)", max_usb_ids);
3611 CMD_ARGC = max_usb_ids * 2;
3612 }
3613 if (CMD_ARGC < 2 || (CMD_ARGC & 1)) {
3614 LOG_WARNING("incomplete vid_pid configuration directive");
3615 return ERROR_COMMAND_SYNTAX_ERROR;
3616 }
3617 for (i = 0; i < CMD_ARGC; i += 2) {
3618 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i], stlink_dap_param.vid[i / 2]);
3619 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i + 1], stlink_dap_param.pid[i / 2]);
3620 }
3621
3622 /* null termination */
3623 stlink_dap_param.vid[i / 2] = stlink_dap_param.pid[i / 2] = 0;
3624
3625 return ERROR_OK;
3626 }
3627
3628 /** */
3629 static const struct command_registration stlink_dap_subcommand_handlers[] = {
3630 {
3631 .name = "serial",
3632 .handler = stlink_dap_serial_command,
3633 .mode = COMMAND_CONFIG,
3634 .help = "set the serial number of the adapter",
3635 .usage = "<serial_number>",
3636 },
3637 {
3638 .name = "vid_pid",
3639 .handler = stlink_dap_vid_pid,
3640 .mode = COMMAND_CONFIG,
3641 .help = "USB VID and PID of the adapter",
3642 .usage = "(vid pid)+",
3643 },
3644 COMMAND_REGISTRATION_DONE
3645 };
3646
3647 /** */
3648 static const struct command_registration stlink_dap_command_handlers[] = {
3649 {
3650 .name = "st-link",
3651 .mode = COMMAND_ANY,
3652 .help = "perform st-link management",
3653 .chain = stlink_dap_subcommand_handlers,
3654 .usage = "",
3655 },
3656 COMMAND_REGISTRATION_DONE
3657 };
3658
3659 /** */
3660 static int stlink_dap_init(void)
3661 {
3662 enum reset_types jtag_reset_config = jtag_get_reset_config();
3663 enum stlink_mode mode;
3664 int retval;
3665
3666 LOG_DEBUG("stlink_dap_init()");
3667
3668 if (jtag_reset_config & RESET_CNCT_UNDER_SRST) {
3669 if (jtag_reset_config & RESET_SRST_NO_GATING)
3670 stlink_dap_param.connect_under_reset = true;
3671 else
3672 LOG_WARNING("\'srst_nogate\' reset_config option is required");
3673 }
3674
3675 if (transport_is_dapdirect_swd())
3676 mode = STLINK_MODE_DEBUG_SWD;
3677 else if (transport_is_dapdirect_jtag())
3678 mode = STLINK_MODE_DEBUG_JTAG;
3679 else if (transport_is_swim())
3680 mode = STLINK_MODE_DEBUG_SWIM;
3681 else {
3682 LOG_ERROR("Unsupported transport");
3683 return ERROR_FAIL;
3684 }
3685
3686 retval = stlink_usb_open(&stlink_dap_param, mode, (void **)&stlink_dap_handle);
3687 if (retval != ERROR_OK)
3688 return retval;
3689
3690 if ((mode != STLINK_MODE_DEBUG_SWIM) &&
3691 !(stlink_dap_handle->version.flags & STLINK_F_HAS_DAP_REG)) {
3692 LOG_ERROR("ST-Link version does not support DAP direct transport");
3693 return ERROR_FAIL;
3694 }
3695 return ERROR_OK;
3696 }
3697
3698 /** */
3699 static int stlink_dap_quit(void)
3700 {
3701 LOG_DEBUG("stlink_dap_quit()");
3702
3703 free((void *)stlink_dap_param.serial);
3704 stlink_dap_param.serial = NULL;
3705
3706 return stlink_usb_close(stlink_dap_handle);
3707 }
3708
3709 /** */
3710 static int stlink_dap_reset(int req_trst, int req_srst)
3711 {
3712 LOG_DEBUG("stlink_dap_reset(%d)", req_srst);
3713 return stlink_usb_assert_srst(stlink_dap_handle,
3714 req_srst ? STLINK_DEBUG_APIV2_DRIVE_NRST_LOW
3715 : STLINK_DEBUG_APIV2_DRIVE_NRST_HIGH);
3716 }
3717
3718 /** */
3719 static int stlink_dap_speed(int speed)
3720 {
3721 if (speed == 0) {
3722 LOG_ERROR("RTCK not supported. Set nonzero adapter_khz.");
3723 return ERROR_JTAG_NOT_IMPLEMENTED;
3724 }
3725
3726 stlink_dap_param.initial_interface_speed = speed;
3727 stlink_speed(stlink_dap_handle, speed, false);
3728 return ERROR_OK;
3729 }
3730
3731 /** */
3732 static int stlink_dap_khz(int khz, int *jtag_speed)
3733 {
3734 if (khz == 0) {
3735 LOG_ERROR("RCLK not supported");
3736 return ERROR_FAIL;
3737 }
3738
3739 *jtag_speed = stlink_speed(stlink_dap_handle, khz, true);
3740 return ERROR_OK;
3741 }
3742
3743 /** */
3744 static int stlink_dap_speed_div(int speed, int *khz)
3745 {
3746 *khz = speed;
3747 return ERROR_OK;
3748 }
3749
3750 static const struct dap_ops stlink_dap_ops = {
3751 .connect = stlink_dap_op_connect,
3752 .send_sequence = stlink_dap_op_send_sequence,
3753 .queue_dp_read = stlink_dap_op_queue_dp_read,
3754 .queue_dp_write = stlink_dap_op_queue_dp_write,
3755 .queue_ap_read = stlink_dap_op_queue_ap_read,
3756 .queue_ap_write = stlink_dap_op_queue_ap_write,
3757 .queue_ap_abort = stlink_dap_op_queue_ap_abort,
3758 .run = stlink_dap_op_run,
3759 .sync = NULL, /* optional */
3760 .quit = stlink_dap_op_quit, /* optional */
3761 };
3762
3763 static const struct swim_driver stlink_swim_ops = {
3764 .srst = stlink_swim_op_srst,
3765 .read_mem = stlink_swim_op_read_mem,
3766 .write_mem = stlink_swim_op_write_mem,
3767 .reconnect = stlink_swim_op_reconnect,
3768 };
3769
3770 static const char *const stlink_dap_transport[] = { "dapdirect_jtag", "dapdirect_swd", "swim", NULL };
3771
3772 struct adapter_driver stlink_dap_adapter_driver = {
3773 .name = "st-link",
3774 .transports = stlink_dap_transport,
3775 .commands = stlink_dap_command_handlers,
3776
3777 .init = stlink_dap_init,
3778 .quit = stlink_dap_quit,
3779 .reset = stlink_dap_reset,
3780 .speed = stlink_dap_speed,
3781 .khz = stlink_dap_khz,
3782 .speed_div = stlink_dap_speed_div,
3783 .config_trace = stlink_dap_config_trace,
3784 .poll_trace = stlink_dap_trace_read,
3785
3786 .dap_jtag_ops = &stlink_dap_ops,
3787 .dap_swd_ops = &stlink_dap_ops,
3788 .swim_ops = &stlink_swim_ops,
3789 };
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