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openocd: src/jtag: replace the GPL-2.0-or-later license tag
[openocd.git] / src / jtag / drivers / jlink.c
blob098bbb26975580f098bf59e02015c4f8e63a3927
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2
3 /***************************************************************************
4 * Copyright (C) 2007 by Juergen Stuber <juergen@jstuber.net> *
5 * based on Dominic Rath's and Benedikt Sauter's usbprog.c *
6 * *
7 * Copyright (C) 2008 by Spencer Oliver *
8 * spen@spen-soft.co.uk *
9 * *
10 * Copyright (C) 2011 by Jean-Christophe PLAGNIOL-VIILARD *
11 * plagnioj@jcrosoft.com *
12 * *
13 * Copyright (C) 2015 by Marc Schink *
14 * openocd-dev@marcschink.de *
15 * *
16 * Copyright (C) 2015 by Paul Fertser *
17 * fercerpav@gmail.com *
18 ***************************************************************************/
19
20 #ifdef HAVE_CONFIG_H
21 #include "config.h"
22 #endif
23
24 #include <stdint.h>
25 #include <math.h>
26
27 #include <jtag/interface.h>
28 #include <jtag/swd.h>
29 #include <jtag/commands.h>
30 #include <jtag/adapter.h>
31 #include <helper/replacements.h>
32 #include <target/cortex_m.h>
33
34 #include <libjaylink/libjaylink.h>
35
36 static struct jaylink_context *jayctx;
37 static struct jaylink_device_handle *devh;
38 static struct jaylink_connection conn;
39 static struct jaylink_connection connlist[JAYLINK_MAX_CONNECTIONS];
40 static enum jaylink_jtag_version jtag_command_version;
41 static uint8_t caps[JAYLINK_DEV_EXT_CAPS_SIZE];
42
43 static uint32_t serial_number;
44 static bool use_serial_number;
45 static bool use_usb_location;
46 static enum jaylink_usb_address usb_address;
47 static bool use_usb_address;
48 static enum jaylink_target_interface iface = JAYLINK_TIF_JTAG;
49 static bool trace_enabled;
50
51 #define JLINK_MAX_SPEED 12000
52 #define JLINK_TAP_BUFFER_SIZE 2048
53
54 static unsigned int swd_buffer_size = JLINK_TAP_BUFFER_SIZE;
55
56 /* Maximum SWO frequency deviation. */
57 #define SWO_MAX_FREQ_DEV 0.03
58
59 /* 256 byte non-volatile memory */
60 struct device_config {
61 uint8_t usb_address;
62 /* 0ffset 0x01 to 0x03 */
63 uint8_t reserved_1[3];
64 uint32_t target_power;
65 /* 0ffset 0x08 to 0x1f */
66 uint8_t reserved_2[24];
67 /* IP only for J-Link Pro */
68 uint8_t ip_address[4];
69 uint8_t subnet_mask[4];
70 /* 0ffset 0x28 to 0x2f */
71 uint8_t reserved_3[8];
72 uint8_t mac_address[6];
73 /* 0ffset 0x36 to 0xff */
74 uint8_t reserved_4[202];
75 } __attribute__ ((packed));
76
77 static struct device_config config;
78 static struct device_config tmp_config;
79
80 /* Queue command functions */
81 static void jlink_end_state(tap_state_t state);
82 static void jlink_state_move(void);
83 static void jlink_path_move(int num_states, tap_state_t *path);
84 static void jlink_stableclocks(int num_cycles);
85 static void jlink_runtest(int num_cycles);
86 static void jlink_reset(int trst, int srst);
87 static int jlink_reset_safe(int trst, int srst);
88 static int jlink_swd_run_queue(void);
89 static void jlink_swd_queue_cmd(uint8_t cmd, uint32_t *dst, uint32_t data, uint32_t ap_delay_clk);
90 static int jlink_swd_switch_seq(enum swd_special_seq seq);
91
92 /* J-Link tap buffer functions */
93 static void jlink_tap_init(void);
94 static int jlink_flush(void);
95 /**
96 * Queue data to go out and in, flushing the queue as many times as
97 * necessary.
98 *
99 * @param out A pointer to TDI data, if NULL, old stale data will be used.
100 * @param out_offset A bit offset for TDI data.
101 * @param tms_out A pointer to TMS data, if NULL, zeroes will be emitted.
102 * @param tms_offset A bit offset for TMS data.
103 * @param in A pointer to store TDO data to, if NULL the data will be discarded.
104 * @param in_offset A bit offset for TDO data.
105 * @param length Amount of bits to transfer out and in.
106 */
107 static void jlink_clock_data(const uint8_t *out, unsigned out_offset,
108 const uint8_t *tms_out, unsigned tms_offset,
109 uint8_t *in, unsigned in_offset,
110 unsigned length);
111
112 static enum tap_state jlink_last_state = TAP_RESET;
113 static int queued_retval;
114
115 /***************************************************************************/
116 /* External interface implementation */
117
118 static void jlink_execute_stableclocks(struct jtag_command *cmd)
119 {
120 LOG_DEBUG_IO("stableclocks %i cycles", cmd->cmd.runtest->num_cycles);
121 jlink_stableclocks(cmd->cmd.runtest->num_cycles);
122 }
123
124 static void jlink_execute_runtest(struct jtag_command *cmd)
125 {
126 LOG_DEBUG_IO("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles,
127 cmd->cmd.runtest->end_state);
128
129 jlink_end_state(cmd->cmd.runtest->end_state);
130 jlink_runtest(cmd->cmd.runtest->num_cycles);
131 }
132
133 static void jlink_execute_statemove(struct jtag_command *cmd)
134 {
135 LOG_DEBUG_IO("statemove end in %i", cmd->cmd.statemove->end_state);
136
137 jlink_end_state(cmd->cmd.statemove->end_state);
138 jlink_state_move();
139 }
140
141 static void jlink_execute_pathmove(struct jtag_command *cmd)
142 {
143 LOG_DEBUG_IO("pathmove: %i states, end in %i",
144 cmd->cmd.pathmove->num_states,
145 cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
146
147 jlink_path_move(cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path);
148 }
149
150 static void jlink_execute_scan(struct jtag_command *cmd)
151 {
152 LOG_DEBUG_IO("%s type:%d", cmd->cmd.scan->ir_scan ? "IRSCAN" : "DRSCAN",
153 jtag_scan_type(cmd->cmd.scan));
154
155 /* Make sure there are no trailing fields with num_bits == 0, or the logic below will fail. */
156 while (cmd->cmd.scan->num_fields > 0
157 && cmd->cmd.scan->fields[cmd->cmd.scan->num_fields - 1].num_bits == 0) {
158 cmd->cmd.scan->num_fields--;
159 LOG_DEBUG("discarding trailing empty field");
160 }
161
162 if (cmd->cmd.scan->num_fields == 0) {
163 LOG_DEBUG("empty scan, doing nothing");
164 return;
165 }
166
167 if (cmd->cmd.scan->ir_scan) {
168 if (tap_get_state() != TAP_IRSHIFT) {
169 jlink_end_state(TAP_IRSHIFT);
170 jlink_state_move();
171 }
172 } else {
173 if (tap_get_state() != TAP_DRSHIFT) {
174 jlink_end_state(TAP_DRSHIFT);
175 jlink_state_move();
176 }
177 }
178
179 jlink_end_state(cmd->cmd.scan->end_state);
180
181 struct scan_field *field = cmd->cmd.scan->fields;
182 unsigned scan_size = 0;
183
184 for (int i = 0; i < cmd->cmd.scan->num_fields; i++, field++) {
185 scan_size += field->num_bits;
186 LOG_DEBUG_IO("%s%s field %d/%d %d bits",
187 field->in_value ? "in" : "",
188 field->out_value ? "out" : "",
189 i,
190 cmd->cmd.scan->num_fields,
191 field->num_bits);
192
193 if (i == cmd->cmd.scan->num_fields - 1 && tap_get_state() != tap_get_end_state()) {
194 /* Last field, and we're leaving IRSHIFT/DRSHIFT. Clock last bit during tap
195 * movement. This last field can't have length zero, it was checked above. */
196 jlink_clock_data(field->out_value,
197 0,
198 NULL,
199 0,
200 field->in_value,
201 0,
202 field->num_bits - 1);
203 uint8_t last_bit = 0;
204 if (field->out_value)
205 bit_copy(&last_bit, 0, field->out_value, field->num_bits - 1, 1);
206 uint8_t tms_bits = 0x01;
207 jlink_clock_data(&last_bit,
208 0,
209 &tms_bits,
210 0,
211 field->in_value,
212 field->num_bits - 1,
213 1);
214 tap_set_state(tap_state_transition(tap_get_state(), 1));
215 jlink_clock_data(NULL,
216 0,
217 &tms_bits,
218 1,
219 NULL,
220 0,
221 1);
222 tap_set_state(tap_state_transition(tap_get_state(), 0));
223 } else
224 jlink_clock_data(field->out_value,
225 0,
226 NULL,
227 0,
228 field->in_value,
229 0,
230 field->num_bits);
231 }
232
233 if (tap_get_state() != tap_get_end_state()) {
234 jlink_end_state(tap_get_end_state());
235 jlink_state_move();
236 }
237
238 LOG_DEBUG_IO("%s scan, %i bits, end in %s",
239 (cmd->cmd.scan->ir_scan) ? "IR" : "DR", scan_size,
240 tap_state_name(tap_get_end_state()));
241 }
242
243 static void jlink_execute_sleep(struct jtag_command *cmd)
244 {
245 LOG_DEBUG_IO("sleep %" PRIu32 "", cmd->cmd.sleep->us);
246 jlink_flush();
247 jtag_sleep(cmd->cmd.sleep->us);
248 }
249
250 static int jlink_execute_command(struct jtag_command *cmd)
251 {
252 switch (cmd->type) {
253 case JTAG_STABLECLOCKS:
254 jlink_execute_stableclocks(cmd);
255 break;
256 case JTAG_RUNTEST:
257 jlink_execute_runtest(cmd);
258 break;
259 case JTAG_TLR_RESET:
260 jlink_execute_statemove(cmd);
261 break;
262 case JTAG_PATHMOVE:
263 jlink_execute_pathmove(cmd);
264 break;
265 case JTAG_SCAN:
266 jlink_execute_scan(cmd);
267 break;
268 case JTAG_SLEEP:
269 jlink_execute_sleep(cmd);
270 break;
271 default:
272 LOG_ERROR("BUG: Unknown JTAG command type encountered");
273 return ERROR_JTAG_QUEUE_FAILED;
274 }
275
276 return ERROR_OK;
277 }
278
279 static int jlink_execute_queue(void)
280 {
281 int ret;
282 struct jtag_command *cmd = jtag_command_queue;
283
284 while (cmd) {
285 ret = jlink_execute_command(cmd);
286
287 if (ret != ERROR_OK)
288 return ret;
289
290 cmd = cmd->next;
291 }
292
293 return jlink_flush();
294 }
295
296 static int jlink_speed(int speed)
297 {
298 int ret;
299 struct jaylink_speed tmp;
300 int max_speed;
301
302 if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_GET_SPEEDS)) {
303 ret = jaylink_get_speeds(devh, &tmp);
304
305 if (ret != JAYLINK_OK) {
306 LOG_ERROR("jaylink_get_speeds() failed: %s",
307 jaylink_strerror(ret));
308 return ERROR_JTAG_DEVICE_ERROR;
309 }
310
311 tmp.freq /= 1000;
312 max_speed = tmp.freq / tmp.div;
313 } else {
314 max_speed = JLINK_MAX_SPEED;
315 }
316
317 if (!speed) {
318 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_ADAPTIVE_CLOCKING)) {
319 LOG_ERROR("Adaptive clocking is not supported by the device");
320 return ERROR_JTAG_NOT_IMPLEMENTED;
321 }
322
323 speed = JAYLINK_SPEED_ADAPTIVE_CLOCKING;
324 } else if (speed > max_speed) {
325 LOG_INFO("Reduced speed from %d kHz to %d kHz (maximum)", speed,
326 max_speed);
327 speed = max_speed;
328 }
329
330 ret = jaylink_set_speed(devh, speed);
331
332 if (ret != JAYLINK_OK) {
333 LOG_ERROR("jaylink_set_speed() failed: %s",
334 jaylink_strerror(ret));
335 return ERROR_JTAG_DEVICE_ERROR;
336 }
337
338 return ERROR_OK;
339 }
340
341 static int jlink_speed_div(int speed, int *khz)
342 {
343 *khz = speed;
344
345 return ERROR_OK;
346 }
347
348 static int jlink_khz(int khz, int *jtag_speed)
349 {
350 *jtag_speed = khz;
351
352 return ERROR_OK;
353 }
354
355 static bool read_device_config(struct device_config *cfg)
356 {
357 int ret;
358
359 ret = jaylink_read_raw_config(devh, (uint8_t *)cfg);
360
361 if (ret != JAYLINK_OK) {
362 LOG_ERROR("jaylink_read_raw_config() failed: %s",
363 jaylink_strerror(ret));
364 return false;
365 }
366
367 if (cfg->usb_address == 0xff)
368 cfg->usb_address = 0x00;
369
370 if (cfg->target_power == 0xffffffff)
371 cfg->target_power = 0;
372
373 return true;
374 }
375
376 static int select_interface(void)
377 {
378 int ret;
379 uint32_t interfaces;
380
381 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_SELECT_TIF)) {
382 if (iface != JAYLINK_TIF_JTAG) {
383 LOG_ERROR("Device supports JTAG transport only");
384 return ERROR_JTAG_INIT_FAILED;
385 }
386
387 return ERROR_OK;
388 }
389
390 ret = jaylink_get_available_interfaces(devh, &interfaces);
391
392 if (ret != JAYLINK_OK) {
393 LOG_ERROR("jaylink_get_available_interfaces() failed: %s",
394 jaylink_strerror(ret));
395 return ERROR_JTAG_INIT_FAILED;
396 }
397
398 if (!(interfaces & (1 << iface))) {
399 LOG_ERROR("Selected transport is not supported by the device");
400 return ERROR_JTAG_INIT_FAILED;
401 }
402
403 ret = jaylink_select_interface(devh, iface, NULL);
404
405 if (ret < 0) {
406 LOG_ERROR("jaylink_select_interface() failed: %s",
407 jaylink_strerror(ret));
408 return ERROR_JTAG_INIT_FAILED;
409 }
410
411 return ERROR_OK;
412 }
413
414 static int jlink_register(void)
415 {
416 int ret;
417 size_t i;
418 bool handle_found;
419 size_t count;
420
421 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_REGISTER))
422 return ERROR_OK;
423
424 ret = jaylink_register(devh, &conn, connlist, &count);
425
426 if (ret != JAYLINK_OK) {
427 LOG_ERROR("jaylink_register() failed: %s", jaylink_strerror(ret));
428 return ERROR_FAIL;
429 }
430
431 handle_found = false;
432
433 for (i = 0; i < count; i++) {
434 if (connlist[i].handle == conn.handle) {
435 handle_found = true;
436 break;
437 }
438 }
439
440 if (!handle_found) {
441 LOG_ERROR("Registration failed: maximum number of connections on the "
442 "device reached");
443 return ERROR_FAIL;
444 }
445
446 return ERROR_OK;
447 }
448
449 /*
450 * Adjust the SWD transaction buffer size depending on the free device internal
451 * memory. This ensures that the SWD transactions sent to the device do not
452 * exceed the internal memory of the device.
453 */
454 static bool adjust_swd_buffer_size(void)
455 {
456 int ret;
457 uint32_t tmp;
458
459 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_GET_FREE_MEMORY))
460 return true;
461
462 ret = jaylink_get_free_memory(devh, &tmp);
463
464 if (ret != JAYLINK_OK) {
465 LOG_ERROR("jaylink_get_free_memory() failed: %s",
466 jaylink_strerror(ret));
467 return false;
468 }
469
470 if (tmp < 143) {
471 LOG_ERROR("Not enough free device internal memory: %" PRIu32 " bytes", tmp);
472 return false;
473 }
474
475 tmp = MIN(JLINK_TAP_BUFFER_SIZE, (tmp - 16) / 2);
476
477 if (tmp != swd_buffer_size) {
478 swd_buffer_size = tmp;
479 LOG_DEBUG("Adjusted SWD transaction buffer size to %u bytes",
480 swd_buffer_size);
481 }
482
483 return true;
484 }
485
486 static int jaylink_log_handler(const struct jaylink_context *ctx,
487 enum jaylink_log_level level, const char *format, va_list args,
488 void *user_data)
489 {
490 enum log_levels tmp;
491
492 switch (level) {
493 case JAYLINK_LOG_LEVEL_ERROR:
494 tmp = LOG_LVL_ERROR;
495 break;
496 case JAYLINK_LOG_LEVEL_WARNING:
497 tmp = LOG_LVL_WARNING;
498 break;
499 /*
500 * Forward info messages to the debug output because they are more verbose
501 * than info messages of OpenOCD.
502 */
503 case JAYLINK_LOG_LEVEL_INFO:
504 case JAYLINK_LOG_LEVEL_DEBUG:
505 tmp = LOG_LVL_DEBUG;
506 break;
507 case JAYLINK_LOG_LEVEL_DEBUG_IO:
508 tmp = LOG_LVL_DEBUG_IO;
509 break;
510 default:
511 tmp = LOG_LVL_WARNING;
512 }
513
514 log_vprintf_lf(tmp, __FILE__, __LINE__, __func__, format, args);
515
516 return 0;
517 }
518
519 static bool jlink_usb_location_equal(struct jaylink_device *dev)
520 {
521 int retval;
522 uint8_t bus;
523 uint8_t *ports;
524 size_t num_ports;
525 bool equal = false;
526
527 retval = jaylink_device_get_usb_bus_ports(dev, &bus, &ports, &num_ports);
528
529 if (retval == JAYLINK_ERR_NOT_SUPPORTED) {
530 return false;
531 } else if (retval != JAYLINK_OK) {
532 LOG_WARNING("jaylink_device_get_usb_bus_ports() failed: %s",
533 jaylink_strerror(retval));
534 return false;
535 }
536
537 equal = adapter_usb_location_equal(bus, ports, num_ports);
538 free(ports);
539
540 return equal;
541 }
542
543
544 static int jlink_open_device(uint32_t ifaces, bool *found_device)
545 {
546 int ret = jaylink_discovery_scan(jayctx, ifaces);
547 if (ret != JAYLINK_OK) {
548 LOG_ERROR("jaylink_discovery_scan() failed: %s", jaylink_strerror(ret));
549 jaylink_exit(jayctx);
550 return ERROR_JTAG_INIT_FAILED;
551 }
552
553 size_t num_devices;
554 struct jaylink_device **devs;
555 ret = jaylink_get_devices(jayctx, &devs, &num_devices);
556
557 if (ret != JAYLINK_OK) {
558 LOG_ERROR("jaylink_get_devices() failed: %s", jaylink_strerror(ret));
559 jaylink_exit(jayctx);
560 return ERROR_JTAG_INIT_FAILED;
561 }
562
563 use_usb_location = !!adapter_usb_get_location();
564
565 if (!use_serial_number && !use_usb_address && !use_usb_location && num_devices > 1) {
566 LOG_ERROR("Multiple devices found, specify the desired device");
567 jaylink_free_devices(devs, true);
568 jaylink_exit(jayctx);
569 return ERROR_JTAG_INIT_FAILED;
570 }
571
572 *found_device = false;
573
574 for (size_t i = 0; devs[i]; i++) {
575 struct jaylink_device *dev = devs[i];
576
577 if (use_serial_number) {
578 uint32_t tmp;
579 ret = jaylink_device_get_serial_number(dev, &tmp);
580
581 if (ret == JAYLINK_ERR_NOT_AVAILABLE) {
582 continue;
583 } else if (ret != JAYLINK_OK) {
584 LOG_WARNING("jaylink_device_get_serial_number() failed: %s",
585 jaylink_strerror(ret));
586 continue;
587 }
588
589 if (serial_number != tmp)
590 continue;
591 }
592
593 if (use_usb_address) {
594 enum jaylink_usb_address address;
595 ret = jaylink_device_get_usb_address(dev, &address);
596
597 if (ret == JAYLINK_ERR_NOT_SUPPORTED) {
598 continue;
599 } else if (ret != JAYLINK_OK) {
600 LOG_WARNING("jaylink_device_get_usb_address() failed: %s",
601 jaylink_strerror(ret));
602 continue;
603 }
604
605 if (usb_address != address)
606 continue;
607 }
608
609 if (use_usb_location && !jlink_usb_location_equal(dev))
610 continue;
611
612 ret = jaylink_open(dev, &devh);
613
614 if (ret == JAYLINK_OK) {
615 *found_device = true;
616 break;
617 }
618
619 LOG_ERROR("Failed to open device: %s", jaylink_strerror(ret));
620 }
621
622 jaylink_free_devices(devs, true);
623 return ERROR_OK;
624 }
625
626
627 static int jlink_init(void)
628 {
629 int ret;
630 char *firmware_version;
631 struct jaylink_hardware_version hwver;
632 struct jaylink_hardware_status hwstatus;
633 size_t length;
634
635 LOG_DEBUG("Using libjaylink %s (compiled with %s)",
636 jaylink_version_package_get_string(), JAYLINK_VERSION_PACKAGE_STRING);
637
638 if (!jaylink_library_has_cap(JAYLINK_CAP_HIF_USB) && use_usb_address) {
639 LOG_ERROR("J-Link driver does not support USB devices");
640 return ERROR_JTAG_INIT_FAILED;
641 }
642
643 ret = jaylink_init(&jayctx);
644
645 if (ret != JAYLINK_OK) {
646 LOG_ERROR("jaylink_init() failed: %s", jaylink_strerror(ret));
647 return ERROR_JTAG_INIT_FAILED;
648 }
649
650 ret = jaylink_log_set_callback(jayctx, &jaylink_log_handler, NULL);
651
652 if (ret != JAYLINK_OK) {
653 LOG_ERROR("jaylink_log_set_callback() failed: %s",
654 jaylink_strerror(ret));
655 jaylink_exit(jayctx);
656 return ERROR_JTAG_INIT_FAILED;
657 }
658
659 const char *serial = adapter_get_required_serial();
660 if (serial) {
661 ret = jaylink_parse_serial_number(serial, &serial_number);
662 if (ret == JAYLINK_ERR) {
663 LOG_ERROR("Invalid serial number: %s", serial);
664 jaylink_exit(jayctx);
665 return ERROR_JTAG_INIT_FAILED;
666 }
667 if (ret != JAYLINK_OK) {
668 LOG_ERROR("jaylink_parse_serial_number() failed: %s", jaylink_strerror(ret));
669 jaylink_exit(jayctx);
670 return ERROR_JTAG_INIT_FAILED;
671 }
672 use_serial_number = true;
673 use_usb_address = false;
674 }
675
676 bool found_device;
677 ret = jlink_open_device(JAYLINK_HIF_USB, &found_device);
678 if (ret != ERROR_OK)
679 return ret;
680
681 if (!found_device && use_serial_number) {
682 ret = jlink_open_device(JAYLINK_HIF_TCP, &found_device);
683 if (ret != ERROR_OK)
684 return ret;
685 }
686
687 if (!found_device) {
688 LOG_ERROR("No J-Link device found");
689 jaylink_exit(jayctx);
690 return ERROR_JTAG_INIT_FAILED;
691 }
692
693 /*
694 * Be careful with changing the following initialization sequence because
695 * some devices are known to be sensitive regarding the order.
696 */
697
698 ret = jaylink_get_firmware_version(devh, &firmware_version, &length);
699
700 if (ret != JAYLINK_OK) {
701 LOG_ERROR("jaylink_get_firmware_version() failed: %s",
702 jaylink_strerror(ret));
703 jaylink_close(devh);
704 jaylink_exit(jayctx);
705 return ERROR_JTAG_INIT_FAILED;
706 } else if (length > 0) {
707 LOG_INFO("%s", firmware_version);
708 free(firmware_version);
709 } else {
710 LOG_WARNING("Device responds empty firmware version string");
711 }
712
713 memset(caps, 0, JAYLINK_DEV_EXT_CAPS_SIZE);
714 ret = jaylink_get_caps(devh, caps);
715
716 if (ret != JAYLINK_OK) {
717 LOG_ERROR("jaylink_get_caps() failed: %s", jaylink_strerror(ret));
718 jaylink_close(devh);
719 jaylink_exit(jayctx);
720 return ERROR_JTAG_INIT_FAILED;
721 }
722
723 if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_GET_EXT_CAPS)) {
724 ret = jaylink_get_extended_caps(devh, caps);
725
726 if (ret != JAYLINK_OK) {
727 LOG_ERROR("jaylink_get_extended_caps() failed: %s",
728 jaylink_strerror(ret));
729 jaylink_close(devh);
730 jaylink_exit(jayctx);
731 return ERROR_JTAG_INIT_FAILED;
732 }
733 }
734
735 jtag_command_version = JAYLINK_JTAG_VERSION_2;
736
737 if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_GET_HW_VERSION)) {
738 ret = jaylink_get_hardware_version(devh, &hwver);
739
740 if (ret != JAYLINK_OK) {
741 LOG_ERROR("Failed to retrieve hardware version: %s",
742 jaylink_strerror(ret));
743 jaylink_close(devh);
744 jaylink_exit(jayctx);
745 return ERROR_JTAG_INIT_FAILED;
746 }
747
748 LOG_INFO("Hardware version: %u.%02u", hwver.major, hwver.minor);
749
750 if (hwver.major >= 5)
751 jtag_command_version = JAYLINK_JTAG_VERSION_3;
752 }
753
754 if (iface == JAYLINK_TIF_SWD) {
755 /*
756 * Adjust the SWD transaction buffer size in case there is already
757 * allocated memory on the device. This happens for example if the
758 * memory for SWO capturing is still allocated because the software
759 * which used the device before has not been shut down properly.
760 */
761 if (!adjust_swd_buffer_size()) {
762 jaylink_close(devh);
763 jaylink_exit(jayctx);
764 return ERROR_JTAG_INIT_FAILED;
765 }
766 }
767
768 if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG)) {
769 if (!read_device_config(&config)) {
770 LOG_ERROR("Failed to read device configuration data");
771 jaylink_close(devh);
772 jaylink_exit(jayctx);
773 return ERROR_JTAG_INIT_FAILED;
774 }
775
776 memcpy(&tmp_config, &config, sizeof(struct device_config));
777 }
778
779 ret = jaylink_get_hardware_status(devh, &hwstatus);
780
781 if (ret != JAYLINK_OK) {
782 LOG_ERROR("jaylink_get_hardware_status() failed: %s",
783 jaylink_strerror(ret));
784 jaylink_close(devh);
785 jaylink_exit(jayctx);
786 return ERROR_JTAG_INIT_FAILED;
787 }
788
789 LOG_INFO("VTarget = %u.%03u V", hwstatus.target_voltage / 1000,
790 hwstatus.target_voltage % 1000);
791
792 conn.handle = 0;
793 conn.pid = 0;
794 strcpy(conn.hid, "0.0.0.0");
795 conn.iid = 0;
796 conn.cid = 0;
797
798 ret = jlink_register();
799
800 if (ret != ERROR_OK) {
801 jaylink_close(devh);
802 jaylink_exit(jayctx);
803 return ERROR_JTAG_INIT_FAILED;
804 }
805
806 ret = select_interface();
807
808 if (ret != ERROR_OK) {
809 jaylink_close(devh);
810 jaylink_exit(jayctx);
811 return ret;
812 }
813
814 jlink_reset(0, 0);
815 jtag_sleep(3000);
816 jlink_tap_init();
817
818 jlink_speed(adapter_get_speed_khz());
819
820 if (iface == JAYLINK_TIF_JTAG) {
821 /*
822 * J-Link devices with firmware version v5 and v6 seems to have an issue
823 * if the first tap move is not divisible by 8, so we send a TLR on
824 * first power up.
825 */
826 uint8_t tms = 0xff;
827 jlink_clock_data(NULL, 0, &tms, 0, NULL, 0, 8);
828
829 jlink_flush();
830 }
831
832 return ERROR_OK;
833 }
834
835 static int jlink_quit(void)
836 {
837 int ret;
838 size_t count;
839
840 if (trace_enabled) {
841 ret = jaylink_swo_stop(devh);
842
843 if (ret != JAYLINK_OK)
844 LOG_ERROR("jaylink_swo_stop() failed: %s", jaylink_strerror(ret));
845 }
846
847 if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_REGISTER)) {
848 ret = jaylink_unregister(devh, &conn, connlist, &count);
849
850 if (ret != JAYLINK_OK)
851 LOG_ERROR("jaylink_unregister() failed: %s",
852 jaylink_strerror(ret));
853 }
854
855 jaylink_close(devh);
856 jaylink_exit(jayctx);
857
858 return ERROR_OK;
859 }
860
861 /***************************************************************************/
862 /* Queue command implementations */
863
864 static void jlink_end_state(tap_state_t state)
865 {
866 if (tap_is_state_stable(state))
867 tap_set_end_state(state);
868 else {
869 LOG_ERROR("BUG: %i is not a valid end state", state);
870 exit(-1);
871 }
872 }
873
874 /* Goes to the end state. */
875 static void jlink_state_move(void)
876 {
877 uint8_t tms_scan;
878 uint8_t tms_scan_bits;
879
880 tms_scan = tap_get_tms_path(tap_get_state(), tap_get_end_state());
881 tms_scan_bits = tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
882
883 jlink_clock_data(NULL, 0, &tms_scan, 0, NULL, 0, tms_scan_bits);
884
885 tap_set_state(tap_get_end_state());
886 }
887
888 static void jlink_path_move(int num_states, tap_state_t *path)
889 {
890 int i;
891 uint8_t tms = 0xff;
892
893 for (i = 0; i < num_states; i++) {
894 if (path[i] == tap_state_transition(tap_get_state(), false))
895 jlink_clock_data(NULL, 0, NULL, 0, NULL, 0, 1);
896 else if (path[i] == tap_state_transition(tap_get_state(), true))
897 jlink_clock_data(NULL, 0, &tms, 0, NULL, 0, 1);
898 else {
899 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition",
900 tap_state_name(tap_get_state()), tap_state_name(path[i]));
901 exit(-1);
902 }
903
904 tap_set_state(path[i]);
905 }
906
907 tap_set_end_state(tap_get_state());
908 }
909
910 static void jlink_stableclocks(int num_cycles)
911 {
912 int i;
913
914 uint8_t tms = tap_get_state() == TAP_RESET;
915 /* Execute num_cycles. */
916 for (i = 0; i < num_cycles; i++)
917 jlink_clock_data(NULL, 0, &tms, 0, NULL, 0, 1);
918 }
919
920 static void jlink_runtest(int num_cycles)
921 {
922 tap_state_t saved_end_state = tap_get_end_state();
923
924 /* Only do a state_move when we're not already in IDLE. */
925 if (tap_get_state() != TAP_IDLE) {
926 jlink_end_state(TAP_IDLE);
927 jlink_state_move();
928 /* num_cycles--; */
929 }
930
931 jlink_stableclocks(num_cycles);
932
933 /* Finish in end_state. */
934 jlink_end_state(saved_end_state);
935
936 if (tap_get_state() != tap_get_end_state())
937 jlink_state_move();
938 }
939
940 static void jlink_reset(int trst, int srst)
941 {
942 LOG_DEBUG("TRST: %i, SRST: %i", trst, srst);
943
944 /* Signals are active low. */
945 if (srst == 0)
946 jaylink_set_reset(devh);
947
948 if (srst == 1)
949 jaylink_clear_reset(devh);
950
951 if (trst == 1)
952 jaylink_jtag_clear_trst(devh);
953
954 if (trst == 0)
955 jaylink_jtag_set_trst(devh);
956 }
957
958 static int jlink_reset_safe(int trst, int srst)
959 {
960 jlink_flush();
961 jlink_reset(trst, srst);
962 return jlink_flush();
963 }
964
965 COMMAND_HANDLER(jlink_usb_command)
966 {
967 int tmp;
968
969 if (CMD_ARGC != 1) {
970 command_print(CMD, "Need exactly one argument for jlink usb");
971 return ERROR_COMMAND_SYNTAX_ERROR;
972 }
973
974 if (sscanf(CMD_ARGV[0], "%i", &tmp) != 1) {
975 command_print(CMD, "Invalid USB address: %s", CMD_ARGV[0]);
976 return ERROR_FAIL;
977 }
978
979 if (tmp < JAYLINK_USB_ADDRESS_0 || tmp > JAYLINK_USB_ADDRESS_3) {
980 command_print(CMD, "Invalid USB address: %s", CMD_ARGV[0]);
981 return ERROR_FAIL;
982 }
983
984 usb_address = tmp;
985
986 use_usb_address = true;
987
988 return ERROR_OK;
989 }
990
991 COMMAND_HANDLER(jlink_handle_hwstatus_command)
992 {
993 int ret;
994 struct jaylink_hardware_status status;
995
996 ret = jaylink_get_hardware_status(devh, &status);
997
998 if (ret != JAYLINK_OK) {
999 command_print(CMD, "jaylink_get_hardware_status() failed: %s",
1000 jaylink_strerror(ret));
1001 return ERROR_FAIL;
1002 }
1003
1004 command_print(CMD, "VTarget = %u.%03u V",
1005 status.target_voltage / 1000, status.target_voltage % 1000);
1006
1007 command_print(CMD, "TCK = %u TDI = %u TDO = %u TMS = %u SRST = %u "
1008 "TRST = %u", status.tck, status.tdi, status.tdo, status.tms,
1009 status.tres, status.trst);
1010
1011 if (status.target_voltage < 1500)
1012 command_print(CMD, "Target voltage too low. Check target power");
1013
1014 return ERROR_OK;
1015 }
1016
1017 COMMAND_HANDLER(jlink_handle_free_memory_command)
1018 {
1019 int ret;
1020 uint32_t tmp;
1021
1022 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_GET_FREE_MEMORY)) {
1023 command_print(CMD, "Retrieval of free memory is not supported by "
1024 "the device");
1025 return ERROR_OK;
1026 }
1027
1028 ret = jaylink_get_free_memory(devh, &tmp);
1029
1030 if (ret != JAYLINK_OK) {
1031 command_print(CMD, "jaylink_get_free_memory() failed: %s",
1032 jaylink_strerror(ret));
1033 return ERROR_FAIL;
1034 }
1035
1036 command_print(CMD, "Device has %" PRIu32 " bytes of free memory", tmp);
1037
1038 return ERROR_OK;
1039 }
1040
1041 COMMAND_HANDLER(jlink_handle_jlink_jtag_command)
1042 {
1043 int tmp;
1044 int version;
1045
1046 if (!CMD_ARGC) {
1047 switch (jtag_command_version) {
1048 case JAYLINK_JTAG_VERSION_2:
1049 version = 2;
1050 break;
1051 case JAYLINK_JTAG_VERSION_3:
1052 version = 3;
1053 break;
1054 default:
1055 return ERROR_FAIL;
1056 }
1057
1058 command_print(CMD, "JTAG command version: %i", version);
1059 } else if (CMD_ARGC == 1) {
1060 if (sscanf(CMD_ARGV[0], "%i", &tmp) != 1) {
1061 command_print(CMD, "Invalid argument: %s", CMD_ARGV[0]);
1062 return ERROR_COMMAND_SYNTAX_ERROR;
1063 }
1064
1065 switch (tmp) {
1066 case 2:
1067 jtag_command_version = JAYLINK_JTAG_VERSION_2;
1068 break;
1069 case 3:
1070 jtag_command_version = JAYLINK_JTAG_VERSION_3;
1071 break;
1072 default:
1073 command_print(CMD, "Invalid argument: %s", CMD_ARGV[0]);
1074 return ERROR_COMMAND_SYNTAX_ERROR;
1075 }
1076 } else {
1077 command_print(CMD, "Need exactly one argument for jlink jtag");
1078 return ERROR_COMMAND_SYNTAX_ERROR;
1079 }
1080
1081 return ERROR_OK;
1082 }
1083
1084 COMMAND_HANDLER(jlink_handle_target_power_command)
1085 {
1086 int ret;
1087 int enable;
1088
1089 if (CMD_ARGC != 1) {
1090 command_print(CMD, "Need exactly one argument for jlink targetpower");
1091 return ERROR_COMMAND_SYNTAX_ERROR;
1092 }
1093
1094 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_SET_TARGET_POWER)) {
1095 command_print(CMD, "Target power supply is not supported by the "
1096 "device");
1097 return ERROR_OK;
1098 }
1099
1100 if (!strcmp(CMD_ARGV[0], "on")) {
1101 enable = true;
1102 } else if (!strcmp(CMD_ARGV[0], "off")) {
1103 enable = false;
1104 } else {
1105 command_print(CMD, "Invalid argument: %s", CMD_ARGV[0]);
1106 return ERROR_FAIL;
1107 }
1108
1109 ret = jaylink_set_target_power(devh, enable);
1110
1111 if (ret != JAYLINK_OK) {
1112 command_print(CMD, "jaylink_set_target_power() failed: %s",
1113 jaylink_strerror(ret));
1114 return ERROR_FAIL;
1115 }
1116
1117 return ERROR_OK;
1118 }
1119
1120 static void show_config_usb_address(struct command_invocation *cmd)
1121 {
1122 if (config.usb_address != tmp_config.usb_address)
1123 command_print(cmd, "USB address: %u [%u]", config.usb_address,
1124 tmp_config.usb_address);
1125 else
1126 command_print(cmd, "USB address: %u", config.usb_address);
1127 }
1128
1129 static void show_config_ip_address(struct command_invocation *cmd)
1130 {
1131 if (!memcmp(config.ip_address, tmp_config.ip_address, 4))
1132 command_print(cmd, "IP address: %d.%d.%d.%d",
1133 config.ip_address[3], config.ip_address[2],
1134 config.ip_address[1], config.ip_address[0]);
1135 else
1136 command_print(cmd, "IP address: %d.%d.%d.%d [%d.%d.%d.%d]",
1137 config.ip_address[3], config.ip_address[2],
1138 config.ip_address[1], config.ip_address[0],
1139 tmp_config.ip_address[3], tmp_config.ip_address[2],
1140 tmp_config.ip_address[1], tmp_config.ip_address[0]);
1141
1142 if (!memcmp(config.subnet_mask, tmp_config.subnet_mask, 4))
1143 command_print(cmd, "Subnet mask: %d.%d.%d.%d",
1144 config.subnet_mask[3], config.subnet_mask[2],
1145 config.subnet_mask[1], config.subnet_mask[0]);
1146 else
1147 command_print(cmd, "Subnet mask: %d.%d.%d.%d [%d.%d.%d.%d]",
1148 config.subnet_mask[3], config.subnet_mask[2],
1149 config.subnet_mask[1], config.subnet_mask[0],
1150 tmp_config.subnet_mask[3], tmp_config.subnet_mask[2],
1151 tmp_config.subnet_mask[1], tmp_config.subnet_mask[0]);
1152 }
1153
1154 static void show_config_mac_address(struct command_invocation *cmd)
1155 {
1156 if (!memcmp(config.mac_address, tmp_config.mac_address, 6))
1157 command_print(cmd, "MAC address: %.02x:%.02x:%.02x:%.02x:%.02x:%.02x",
1158 config.mac_address[5], config.mac_address[4],
1159 config.mac_address[3], config.mac_address[2],
1160 config.mac_address[1], config.mac_address[0]);
1161 else
1162 command_print(cmd, "MAC address: %.02x:%.02x:%.02x:%.02x:%.02x:%.02x "
1163 "[%.02x:%.02x:%.02x:%.02x:%.02x:%.02x]",
1164 config.mac_address[5], config.mac_address[4],
1165 config.mac_address[3], config.mac_address[2],
1166 config.mac_address[1], config.mac_address[0],
1167 tmp_config.mac_address[5], tmp_config.mac_address[4],
1168 tmp_config.mac_address[3], tmp_config.mac_address[2],
1169 tmp_config.mac_address[1], tmp_config.mac_address[0]);
1170 }
1171
1172 static void show_config_target_power(struct command_invocation *cmd)
1173 {
1174 const char *target_power;
1175 const char *current_target_power;
1176
1177 if (!config.target_power)
1178 target_power = "off";
1179 else
1180 target_power = "on";
1181
1182 if (!tmp_config.target_power)
1183 current_target_power = "off";
1184 else
1185 current_target_power = "on";
1186
1187 if (config.target_power != tmp_config.target_power)
1188 command_print(cmd, "Target power supply: %s [%s]", target_power,
1189 current_target_power);
1190 else
1191 command_print(cmd, "Target power supply: %s", target_power);
1192 }
1193
1194 static void show_config(struct command_invocation *cmd)
1195 {
1196 command_print(cmd, "J-Link device configuration:");
1197
1198 show_config_usb_address(cmd);
1199
1200 if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_SET_TARGET_POWER))
1201 show_config_target_power(cmd);
1202
1203 if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_ETHERNET)) {
1204 show_config_ip_address(cmd);
1205 show_config_mac_address(cmd);
1206 }
1207 }
1208
1209 static int poll_trace(uint8_t *buf, size_t *size)
1210 {
1211 int ret;
1212 uint32_t length;
1213
1214 length = *size;
1215
1216 ret = jaylink_swo_read(devh, buf, &length);
1217
1218 if (ret != JAYLINK_OK) {
1219 LOG_ERROR("jaylink_swo_read() failed: %s", jaylink_strerror(ret));
1220 return ERROR_FAIL;
1221 }
1222
1223 *size = length;
1224
1225 return ERROR_OK;
1226 }
1227
1228 static uint32_t calculate_trace_buffer_size(void)
1229 {
1230 int ret;
1231 uint32_t tmp;
1232
1233 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_GET_FREE_MEMORY))
1234 return 0;
1235
1236 ret = jaylink_get_free_memory(devh, &tmp);
1237
1238 if (ret != JAYLINK_OK) {
1239 LOG_ERROR("jaylink_get_free_memory() failed: %s",
1240 jaylink_strerror(ret));
1241 return ERROR_FAIL;
1242 }
1243
1244 if (tmp > 0x3fff || tmp <= 0x600)
1245 tmp = tmp >> 1;
1246 else
1247 tmp = tmp - 0x400;
1248
1249 return tmp & 0xffffff00;
1250 }
1251
1252 static bool calculate_swo_prescaler(unsigned int traceclkin_freq,
1253 uint32_t trace_freq, uint16_t *prescaler)
1254 {
1255 unsigned int presc = (traceclkin_freq + trace_freq / 2) / trace_freq;
1256 if (presc == 0 || presc > TPIU_ACPR_MAX_SWOSCALER + 1)
1257 return false;
1258
1259 /* Probe's UART speed must be within 3% of the TPIU's SWO baud rate. */
1260 unsigned int max_deviation = (traceclkin_freq * 3) / 100;
1261 if (presc * trace_freq < traceclkin_freq - max_deviation ||
1262 presc * trace_freq > traceclkin_freq + max_deviation)
1263 return false;
1264
1265 *prescaler = presc;
1266
1267 return true;
1268 }
1269
1270 static bool detect_swo_freq_and_prescaler(struct jaylink_swo_speed speed,
1271 unsigned int traceclkin_freq, unsigned int *trace_freq,
1272 uint16_t *prescaler)
1273 {
1274 uint32_t divider;
1275 unsigned int presc;
1276 double deviation;
1277
1278 for (divider = speed.min_div; divider <= speed.max_div; divider++) {
1279 *trace_freq = speed.freq / divider;
1280 presc = ((1.0 - SWO_MAX_FREQ_DEV) * traceclkin_freq) / *trace_freq + 1;
1281
1282 if (presc > TPIU_ACPR_MAX_SWOSCALER + 1)
1283 break;
1284
1285 deviation = fabs(1.0 - ((double)*trace_freq * presc / traceclkin_freq));
1286
1287 if (deviation <= SWO_MAX_FREQ_DEV) {
1288 *prescaler = presc;
1289 return true;
1290 }
1291 }
1292
1293 return false;
1294 }
1295
1296 static int config_trace(bool enabled, enum tpiu_pin_protocol pin_protocol,
1297 uint32_t port_size, unsigned int *trace_freq,
1298 unsigned int traceclkin_freq, uint16_t *prescaler)
1299 {
1300 int ret;
1301 uint32_t buffer_size;
1302 struct jaylink_swo_speed speed;
1303 uint32_t divider;
1304 uint32_t min_freq;
1305 uint32_t max_freq;
1306
1307 trace_enabled = enabled;
1308
1309 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_SWO)) {
1310 if (!enabled)
1311 return ERROR_OK;
1312
1313 LOG_ERROR("Trace capturing is not supported by the device");
1314 return ERROR_FAIL;
1315 }
1316
1317 ret = jaylink_swo_stop(devh);
1318
1319 if (ret != JAYLINK_OK) {
1320 LOG_ERROR("jaylink_swo_stop() failed: %s", jaylink_strerror(ret));
1321 return ERROR_FAIL;
1322 }
1323
1324 if (!enabled) {
1325 /*
1326 * Adjust the SWD transaction buffer size as stopping SWO capturing
1327 * deallocates device internal memory.
1328 */
1329 if (!adjust_swd_buffer_size())
1330 return ERROR_FAIL;
1331
1332 return ERROR_OK;
1333 }
1334
1335 if (pin_protocol != TPIU_PIN_PROTOCOL_ASYNC_UART) {
1336 LOG_ERROR("Selected pin protocol is not supported");
1337 return ERROR_FAIL;
1338 }
1339
1340 buffer_size = calculate_trace_buffer_size();
1341
1342 if (!buffer_size) {
1343 LOG_ERROR("Not enough free device memory to start trace capturing");
1344 return ERROR_FAIL;
1345 }
1346
1347 ret = jaylink_swo_get_speeds(devh, JAYLINK_SWO_MODE_UART, &speed);
1348
1349 if (ret != JAYLINK_OK) {
1350 LOG_ERROR("jaylink_swo_get_speeds() failed: %s",
1351 jaylink_strerror(ret));
1352 return ERROR_FAIL;
1353 }
1354
1355 if (*trace_freq > 0) {
1356 divider = speed.freq / *trace_freq;
1357 min_freq = speed.freq / speed.max_div;
1358 max_freq = speed.freq / speed.min_div;
1359
1360 if (*trace_freq > max_freq) {
1361 LOG_INFO("Given SWO frequency too high, using %" PRIu32 " Hz instead",
1362 max_freq);
1363 *trace_freq = max_freq;
1364 } else if (*trace_freq < min_freq) {
1365 LOG_INFO("Given SWO frequency too low, using %" PRIu32 " Hz instead",
1366 min_freq);
1367 *trace_freq = min_freq;
1368 } else if (*trace_freq != speed.freq / divider) {
1369 *trace_freq = speed.freq / divider;
1370
1371 LOG_INFO("Given SWO frequency is not supported by the device, "
1372 "using %u Hz instead", *trace_freq);
1373 }
1374
1375 if (!calculate_swo_prescaler(traceclkin_freq, *trace_freq,
1376 prescaler)) {
1377 LOG_ERROR("SWO frequency is not suitable. Please choose a "
1378 "different frequency or use auto-detection");
1379 return ERROR_FAIL;
1380 }
1381 } else {
1382 LOG_INFO("Trying to auto-detect SWO frequency");
1383
1384 if (!detect_swo_freq_and_prescaler(speed, traceclkin_freq, trace_freq,
1385 prescaler)) {
1386 LOG_ERROR("Maximum permitted frequency deviation of %.02f %% "
1387 "could not be achieved", SWO_MAX_FREQ_DEV);
1388 LOG_ERROR("Auto-detection of SWO frequency failed");
1389 return ERROR_FAIL;
1390 }
1391
1392 LOG_INFO("Using SWO frequency of %u Hz", *trace_freq);
1393 }
1394
1395 ret = jaylink_swo_start(devh, JAYLINK_SWO_MODE_UART, *trace_freq,
1396 buffer_size);
1397
1398 if (ret != JAYLINK_OK) {
1399 LOG_ERROR("jaylink_start_swo() failed: %s", jaylink_strerror(ret));
1400 return ERROR_FAIL;
1401 }
1402
1403 LOG_DEBUG("Using %" PRIu32 " bytes device memory for trace capturing",
1404 buffer_size);
1405
1406 /*
1407 * Adjust the SWD transaction buffer size as starting SWO capturing
1408 * allocates device internal memory.
1409 */
1410 if (!adjust_swd_buffer_size())
1411 return ERROR_FAIL;
1412
1413 return ERROR_OK;
1414 }
1415
1416 COMMAND_HANDLER(jlink_handle_config_usb_address_command)
1417 {
1418 uint8_t tmp;
1419
1420 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG)) {
1421 command_print(CMD, "Reading configuration is not supported by the "
1422 "device");
1423 return ERROR_OK;
1424 }
1425
1426 if (!CMD_ARGC) {
1427 show_config_usb_address(CMD);
1428 } else if (CMD_ARGC == 1) {
1429 if (sscanf(CMD_ARGV[0], "%" SCNd8, &tmp) != 1) {
1430 command_print(CMD, "Invalid USB address: %s", CMD_ARGV[0]);
1431 return ERROR_FAIL;
1432 }
1433
1434 if (tmp > JAYLINK_USB_ADDRESS_3) {
1435 command_print(CMD, "Invalid USB address: %u", tmp);
1436 return ERROR_FAIL;
1437 }
1438
1439 tmp_config.usb_address = tmp;
1440 } else {
1441 command_print(CMD, "Need exactly one argument for jlink config usb");
1442 return ERROR_COMMAND_SYNTAX_ERROR;
1443 }
1444
1445 return ERROR_OK;
1446 }
1447
1448 COMMAND_HANDLER(jlink_handle_config_target_power_command)
1449 {
1450 int enable;
1451
1452 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG)) {
1453 command_print(CMD, "Reading configuration is not supported by the "
1454 "device");
1455 return ERROR_OK;
1456 }
1457
1458 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_SET_TARGET_POWER)) {
1459 command_print(CMD, "Target power supply is not supported by the "
1460 "device");
1461 return ERROR_OK;
1462 }
1463
1464 if (!CMD_ARGC) {
1465 show_config_target_power(CMD);
1466 } else if (CMD_ARGC == 1) {
1467 if (!strcmp(CMD_ARGV[0], "on")) {
1468 enable = true;
1469 } else if (!strcmp(CMD_ARGV[0], "off")) {
1470 enable = false;
1471 } else {
1472 command_print(CMD, "Invalid argument: %s", CMD_ARGV[0]);
1473 return ERROR_FAIL;
1474 }
1475
1476 tmp_config.target_power = enable;
1477 } else {
1478 command_print(CMD, "Need exactly one argument for jlink config "
1479 "targetpower");
1480 return ERROR_COMMAND_SYNTAX_ERROR;
1481 }
1482
1483 return ERROR_OK;
1484 }
1485
1486 COMMAND_HANDLER(jlink_handle_config_mac_address_command)
1487 {
1488 uint8_t addr[6];
1489 int i;
1490 char *e;
1491 const char *str;
1492
1493 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG)) {
1494 command_print(CMD, "Reading configuration is not supported by the "
1495 "device");
1496 return ERROR_OK;
1497 }
1498
1499 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_ETHERNET)) {
1500 command_print(CMD, "Ethernet connectivity is not supported by the "
1501 "device");
1502 return ERROR_OK;
1503 }
1504
1505 if (!CMD_ARGC) {
1506 show_config_mac_address(CMD);
1507 } else if (CMD_ARGC == 1) {
1508 str = CMD_ARGV[0];
1509
1510 if ((strlen(str) != 17) || (str[2] != ':' || str[5] != ':' ||
1511 str[8] != ':' || str[11] != ':' || str[14] != ':')) {
1512 command_print(CMD, "Invalid MAC address format");
1513 return ERROR_COMMAND_SYNTAX_ERROR;
1514 }
1515
1516 for (i = 5; i >= 0; i--) {
1517 addr[i] = strtoul(str, &e, 16);
1518 str = e + 1;
1519 }
1520
1521 if (!(addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5])) {
1522 command_print(CMD, "Invalid MAC address: zero address");
1523 return ERROR_COMMAND_SYNTAX_ERROR;
1524 }
1525
1526 if (!(0x01 & addr[0])) {
1527 command_print(CMD, "Invalid MAC address: multicast address");
1528 return ERROR_COMMAND_SYNTAX_ERROR;
1529 }
1530
1531 memcpy(tmp_config.mac_address, addr, sizeof(addr));
1532 } else {
1533 command_print(CMD, "Need exactly one argument for jlink config mac");
1534 return ERROR_COMMAND_SYNTAX_ERROR;
1535 }
1536
1537 return ERROR_OK;
1538 }
1539
1540 static bool string_to_ip(const char *s, uint8_t *ip, int *pos)
1541 {
1542 uint8_t lip[4];
1543 char *e;
1544 const char *s_save = s;
1545 int i;
1546
1547 if (!s)
1548 return false;
1549
1550 for (i = 0; i < 4; i++) {
1551 lip[i] = strtoul(s, &e, 10);
1552
1553 if (*e != '.' && i != 3)
1554 return false;
1555
1556 s = e + 1;
1557 }
1558
1559 *pos = e - s_save;
1560 memcpy(ip, lip, sizeof(lip));
1561
1562 return true;
1563 }
1564
1565 static void cpy_ip(uint8_t *dst, uint8_t *src)
1566 {
1567 int i, j;
1568
1569 for (i = 0, j = 3; i < 4; i++, j--)
1570 dst[i] = src[j];
1571 }
1572
1573 COMMAND_HANDLER(jlink_handle_config_ip_address_command)
1574 {
1575 uint8_t ip_address[4];
1576 uint32_t subnet_mask = 0;
1577 int i, len;
1578 uint8_t subnet_bits = 24;
1579
1580 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG)) {
1581 command_print(CMD, "Reading configuration is not supported by the "
1582 "device");
1583 return ERROR_OK;
1584 }
1585
1586 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_ETHERNET)) {
1587 command_print(CMD, "Ethernet connectivity is not supported by the "
1588 "device");
1589 return ERROR_OK;
1590 }
1591
1592 if (!CMD_ARGC) {
1593 show_config_ip_address(CMD);
1594 } else {
1595 if (!string_to_ip(CMD_ARGV[0], ip_address, &i))
1596 return ERROR_COMMAND_SYNTAX_ERROR;
1597
1598 len = strlen(CMD_ARGV[0]);
1599
1600 /* Check for format A.B.C.D/E. */
1601 if (i < len) {
1602 if (CMD_ARGV[0][i] != '/')
1603 return ERROR_COMMAND_SYNTAX_ERROR;
1604
1605 COMMAND_PARSE_NUMBER(u8, CMD_ARGV[0] + i + 1, subnet_bits);
1606 } else if (CMD_ARGC > 1) {
1607 if (!string_to_ip(CMD_ARGV[1], (uint8_t *)&subnet_mask, &i))
1608 return ERROR_COMMAND_SYNTAX_ERROR;
1609 }
1610
1611 if (!subnet_mask)
1612 subnet_mask = (uint32_t)(subnet_bits < 32 ?
1613 ((1ULL << subnet_bits) - 1) : 0xffffffff);
1614
1615 cpy_ip(tmp_config.ip_address, ip_address);
1616 cpy_ip(tmp_config.subnet_mask, (uint8_t *)&subnet_mask);
1617 }
1618
1619 return ERROR_OK;
1620 }
1621
1622 COMMAND_HANDLER(jlink_handle_config_reset_command)
1623 {
1624 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG))
1625 return ERROR_OK;
1626
1627 memcpy(&tmp_config, &config, sizeof(struct device_config));
1628
1629 return ERROR_OK;
1630 }
1631
1632
1633 COMMAND_HANDLER(jlink_handle_config_write_command)
1634 {
1635 int ret;
1636
1637 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG)) {
1638 command_print(CMD, "Reading configuration is not supported by the "
1639 "device");
1640 return ERROR_OK;
1641 }
1642
1643 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_WRITE_CONFIG)) {
1644 command_print(CMD, "Writing configuration is not supported by the "
1645 "device");
1646 return ERROR_OK;
1647 }
1648
1649 if (!memcmp(&config, &tmp_config, sizeof(struct device_config))) {
1650 command_print(CMD, "Operation not performed due to no changes in "
1651 "the configuration");
1652 return ERROR_OK;
1653 }
1654
1655 ret = jaylink_write_raw_config(devh, (const uint8_t *)&tmp_config);
1656
1657 if (ret != JAYLINK_OK) {
1658 LOG_ERROR("jaylink_write_raw_config() failed: %s",
1659 jaylink_strerror(ret));
1660 return ERROR_FAIL;
1661 }
1662
1663 if (!read_device_config(&config)) {
1664 LOG_ERROR("Failed to read device configuration for verification");
1665 return ERROR_FAIL;
1666 }
1667
1668 if (memcmp(&config, &tmp_config, sizeof(struct device_config))) {
1669 LOG_ERROR("Verification of device configuration failed. Please check "
1670 "your device");
1671 return ERROR_FAIL;
1672 }
1673
1674 memcpy(&tmp_config, &config, sizeof(struct device_config));
1675 command_print(CMD, "The new device configuration applies after power "
1676 "cycling the J-Link device");
1677
1678 return ERROR_OK;
1679 }
1680
1681 COMMAND_HANDLER(jlink_handle_config_command)
1682 {
1683 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG)) {
1684 command_print(CMD, "Device doesn't support reading configuration");
1685 return ERROR_OK;
1686 }
1687
1688 if (CMD_ARGC == 0)
1689 show_config(CMD);
1690
1691 return ERROR_OK;
1692 }
1693
1694 COMMAND_HANDLER(jlink_handle_emucom_write_command)
1695 {
1696 int ret;
1697 size_t tmp;
1698 uint32_t channel;
1699 uint32_t length;
1700 uint8_t *buf;
1701 size_t dummy;
1702
1703 if (CMD_ARGC != 2)
1704 return ERROR_COMMAND_SYNTAX_ERROR;
1705
1706 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_EMUCOM)) {
1707 LOG_ERROR("Device does not support EMUCOM");
1708 return ERROR_FAIL;
1709 }
1710
1711 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], channel);
1712
1713 tmp = strlen(CMD_ARGV[1]);
1714
1715 if (tmp % 2 != 0) {
1716 LOG_ERROR("Data must be encoded as hexadecimal pairs");
1717 return ERROR_COMMAND_ARGUMENT_INVALID;
1718 }
1719
1720 buf = malloc(tmp / 2);
1721
1722 if (!buf) {
1723 LOG_ERROR("Failed to allocate buffer");
1724 return ERROR_FAIL;
1725 }
1726
1727 dummy = unhexify(buf, CMD_ARGV[1], tmp / 2);
1728
1729 if (dummy != (tmp / 2)) {
1730 LOG_ERROR("Data must be encoded as hexadecimal pairs");
1731 free(buf);
1732 return ERROR_COMMAND_ARGUMENT_INVALID;
1733 }
1734
1735 length = tmp / 2;
1736 ret = jaylink_emucom_write(devh, channel, buf, &length);
1737
1738 free(buf);
1739
1740 if (ret == JAYLINK_ERR_DEV_NOT_SUPPORTED) {
1741 LOG_ERROR("Channel not supported by the device");
1742 return ERROR_FAIL;
1743 } else if (ret != JAYLINK_OK) {
1744 LOG_ERROR("Failed to write to channel: %s", jaylink_strerror(ret));
1745 return ERROR_FAIL;
1746 }
1747
1748 if (length != (tmp / 2))
1749 LOG_WARNING("Only %" PRIu32 " bytes written to the channel", length);
1750
1751 return ERROR_OK;
1752 }
1753
1754 COMMAND_HANDLER(jlink_handle_emucom_read_command)
1755 {
1756 int ret;
1757 uint32_t channel;
1758 uint32_t length;
1759 uint8_t *buf;
1760 size_t tmp;
1761
1762 if (CMD_ARGC != 2)
1763 return ERROR_COMMAND_SYNTAX_ERROR;
1764
1765 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_EMUCOM)) {
1766 LOG_ERROR("Device does not support EMUCOM");
1767 return ERROR_FAIL;
1768 }
1769
1770 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], channel);
1771 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], length);
1772
1773 buf = malloc(length * 3 + 1);
1774
1775 if (!buf) {
1776 LOG_ERROR("Failed to allocate buffer");
1777 return ERROR_FAIL;
1778 }
1779
1780 ret = jaylink_emucom_read(devh, channel, buf, &length);
1781
1782 if (ret == JAYLINK_ERR_DEV_NOT_SUPPORTED) {
1783 LOG_ERROR("Channel is not supported by the device");
1784 free(buf);
1785 return ERROR_FAIL;
1786 } else if (ret == JAYLINK_ERR_DEV_NOT_AVAILABLE) {
1787 LOG_ERROR("Channel is not available for the requested amount of data. "
1788 "%" PRIu32 " bytes are available", length);
1789 free(buf);
1790 return ERROR_FAIL;
1791 } else if (ret != JAYLINK_OK) {
1792 LOG_ERROR("Failed to read from channel: %s", jaylink_strerror(ret));
1793 free(buf);
1794 return ERROR_FAIL;
1795 }
1796
1797 tmp = hexify((char *)buf + length, buf, length, 2 * length + 1);
1798
1799 if (tmp != 2 * length) {
1800 LOG_ERROR("Failed to convert data into hexadecimal string");
1801 free(buf);
1802 return ERROR_FAIL;
1803 }
1804
1805 command_print(CMD, "%s", buf + length);
1806 free(buf);
1807
1808 return ERROR_OK;
1809 }
1810
1811 static const struct command_registration jlink_config_subcommand_handlers[] = {
1812 {
1813 .name = "usb",
1814 .handler = &jlink_handle_config_usb_address_command,
1815 .mode = COMMAND_EXEC,
1816 .help = "set the USB address",
1817 .usage = "[0-3]",
1818 },
1819 {
1820 .name = "targetpower",
1821 .handler = &jlink_handle_config_target_power_command,
1822 .mode = COMMAND_EXEC,
1823 .help = "set the target power supply",
1824 .usage = "[on|off]"
1825 },
1826 {
1827 .name = "mac",
1828 .handler = &jlink_handle_config_mac_address_command,
1829 .mode = COMMAND_EXEC,
1830 .help = "set the MAC Address",
1831 .usage = "[ff:ff:ff:ff:ff:ff]",
1832 },
1833 {
1834 .name = "ip",
1835 .handler = &jlink_handle_config_ip_address_command,
1836 .mode = COMMAND_EXEC,
1837 .help = "set the IP address, where A.B.C.D is the IP address, "
1838 "E the bit of the subnet mask, F.G.H.I the subnet mask",
1839 .usage = "[A.B.C.D[/E] [F.G.H.I]]",
1840 },
1841 {
1842 .name = "reset",
1843 .handler = &jlink_handle_config_reset_command,
1844 .mode = COMMAND_EXEC,
1845 .help = "undo configuration changes",
1846 .usage = "",
1847 },
1848 {
1849 .name = "write",
1850 .handler = &jlink_handle_config_write_command,
1851 .mode = COMMAND_EXEC,
1852 .help = "write configuration to the device",
1853 .usage = "",
1854 },
1855 COMMAND_REGISTRATION_DONE
1856 };
1857
1858 static const struct command_registration jlink_emucom_subcommand_handlers[] = {
1859 {
1860 .name = "write",
1861 .handler = &jlink_handle_emucom_write_command,
1862 .mode = COMMAND_EXEC,
1863 .help = "write to a channel",
1864 .usage = "<channel> <data>",
1865 },
1866 {
1867 .name = "read",
1868 .handler = &jlink_handle_emucom_read_command,
1869 .mode = COMMAND_EXEC,
1870 .help = "read from a channel",
1871 .usage = "<channel> <length>"
1872 },
1873 COMMAND_REGISTRATION_DONE
1874 };
1875
1876 static const struct command_registration jlink_subcommand_handlers[] = {
1877 {
1878 .name = "jtag",
1879 .handler = &jlink_handle_jlink_jtag_command,
1880 .mode = COMMAND_EXEC,
1881 .help = "select the JTAG command version",
1882 .usage = "[2|3]",
1883 },
1884 {
1885 .name = "targetpower",
1886 .handler = &jlink_handle_target_power_command,
1887 .mode = COMMAND_EXEC,
1888 .help = "set the target power supply",
1889 .usage = "<on|off>"
1890 },
1891 {
1892 .name = "freemem",
1893 .handler = &jlink_handle_free_memory_command,
1894 .mode = COMMAND_EXEC,
1895 .help = "show free device memory",
1896 .usage = "",
1897 },
1898 {
1899 .name = "hwstatus",
1900 .handler = &jlink_handle_hwstatus_command,
1901 .mode = COMMAND_EXEC,
1902 .help = "show the hardware status",
1903 .usage = "",
1904 },
1905 {
1906 .name = "usb",
1907 .handler = &jlink_usb_command,
1908 .mode = COMMAND_CONFIG,
1909 .help = "set the USB address of the device that should be used",
1910 .usage = "<0-3>"
1911 },
1912 {
1913 .name = "config",
1914 .handler = &jlink_handle_config_command,
1915 .mode = COMMAND_EXEC,
1916 .help = "access the device configuration. If no argument is given "
1917 "this will show the device configuration",
1918 .chain = jlink_config_subcommand_handlers,
1919 .usage = "[<cmd>]",
1920 },
1921 {
1922 .name = "emucom",
1923 .mode = COMMAND_EXEC,
1924 .help = "access EMUCOM channel",
1925 .chain = jlink_emucom_subcommand_handlers,
1926 .usage = "",
1927 },
1928 COMMAND_REGISTRATION_DONE
1929 };
1930
1931 static const struct command_registration jlink_command_handlers[] = {
1932 {
1933 .name = "jlink",
1934 .mode = COMMAND_ANY,
1935 .help = "perform jlink management",
1936 .chain = jlink_subcommand_handlers,
1937 .usage = "",
1938 },
1939 COMMAND_REGISTRATION_DONE
1940 };
1941
1942 static int jlink_swd_init(void)
1943 {
1944 iface = JAYLINK_TIF_SWD;
1945
1946 return ERROR_OK;
1947 }
1948
1949 static void jlink_swd_write_reg(uint8_t cmd, uint32_t value, uint32_t ap_delay_clk)
1950 {
1951 assert(!(cmd & SWD_CMD_RNW));
1952 jlink_swd_queue_cmd(cmd, NULL, value, ap_delay_clk);
1953 }
1954
1955 static void jlink_swd_read_reg(uint8_t cmd, uint32_t *value, uint32_t ap_delay_clk)
1956 {
1957 assert(cmd & SWD_CMD_RNW);
1958 jlink_swd_queue_cmd(cmd, value, 0, ap_delay_clk);
1959 }
1960
1961 /***************************************************************************/
1962 /* J-Link tap functions */
1963
1964 static unsigned tap_length;
1965 /* In SWD mode use tms buffer for direction control */
1966 static uint8_t tms_buffer[JLINK_TAP_BUFFER_SIZE];
1967 static uint8_t tdi_buffer[JLINK_TAP_BUFFER_SIZE];
1968 static uint8_t tdo_buffer[JLINK_TAP_BUFFER_SIZE];
1969
1970 struct pending_scan_result {
1971 /** First bit position in tdo_buffer to read. */
1972 unsigned first;
1973 /** Number of bits to read. */
1974 unsigned length;
1975 /** Location to store the result */
1976 void *buffer;
1977 /** Offset in the destination buffer */
1978 unsigned buffer_offset;
1979 };
1980
1981 #define MAX_PENDING_SCAN_RESULTS 256
1982
1983 static int pending_scan_results_length;
1984 static struct pending_scan_result pending_scan_results_buffer[MAX_PENDING_SCAN_RESULTS];
1985
1986 static void jlink_tap_init(void)
1987 {
1988 tap_length = 0;
1989 pending_scan_results_length = 0;
1990 memset(tms_buffer, 0, sizeof(tms_buffer));
1991 memset(tdi_buffer, 0, sizeof(tdi_buffer));
1992 }
1993
1994 static void jlink_clock_data(const uint8_t *out, unsigned out_offset,
1995 const uint8_t *tms_out, unsigned tms_offset,
1996 uint8_t *in, unsigned in_offset,
1997 unsigned length)
1998 {
1999 do {
2000 unsigned available_length = JLINK_TAP_BUFFER_SIZE - tap_length / 8;
2001
2002 if (!available_length ||
2003 (in && pending_scan_results_length == MAX_PENDING_SCAN_RESULTS)) {
2004 if (jlink_flush() != ERROR_OK)
2005 return;
2006 available_length = JLINK_TAP_BUFFER_SIZE;
2007 }
2008
2009 struct pending_scan_result *pending_scan_result =
2010 &pending_scan_results_buffer[pending_scan_results_length];
2011
2012 unsigned scan_length = length > available_length ?
2013 available_length : length;
2014
2015 if (out)
2016 buf_set_buf(out, out_offset, tdi_buffer, tap_length, scan_length);
2017 if (tms_out)
2018 buf_set_buf(tms_out, tms_offset, tms_buffer, tap_length, scan_length);
2019
2020 if (in) {
2021 pending_scan_result->first = tap_length;
2022 pending_scan_result->length = scan_length;
2023 pending_scan_result->buffer = in;
2024 pending_scan_result->buffer_offset = in_offset;
2025 pending_scan_results_length++;
2026 }
2027
2028 tap_length += scan_length;
2029 out_offset += scan_length;
2030 tms_offset += scan_length;
2031 in_offset += scan_length;
2032 length -= scan_length;
2033 } while (length > 0);
2034 }
2035
2036 static int jlink_flush(void)
2037 {
2038 int i;
2039 int ret;
2040
2041 if (!tap_length)
2042 return ERROR_OK;
2043
2044 jlink_last_state = jtag_debug_state_machine(tms_buffer, tdi_buffer,
2045 tap_length, jlink_last_state);
2046
2047 ret = jaylink_jtag_io(devh, tms_buffer, tdi_buffer, tdo_buffer,
2048 tap_length, jtag_command_version);
2049
2050 if (ret != JAYLINK_OK) {
2051 LOG_ERROR("jaylink_jtag_io() failed: %s", jaylink_strerror(ret));
2052 jlink_tap_init();
2053 return ERROR_JTAG_QUEUE_FAILED;
2054 }
2055
2056 for (i = 0; i < pending_scan_results_length; i++) {
2057 struct pending_scan_result *p = &pending_scan_results_buffer[i];
2058
2059 buf_set_buf(tdo_buffer, p->first, p->buffer,
2060 p->buffer_offset, p->length);
2061
2062 LOG_DEBUG_IO("Pending scan result, length = %d", p->length);
2063 }
2064
2065 jlink_tap_init();
2066
2067 return ERROR_OK;
2068 }
2069
2070 static void fill_buffer(uint8_t *buf, uint32_t val, uint32_t len)
2071 {
2072 unsigned int tap_pos = tap_length;
2073
2074 while (len > 32) {
2075 buf_set_u32(buf, tap_pos, 32, val);
2076 len -= 32;
2077 tap_pos += 32;
2078 }
2079
2080 if (len)
2081 buf_set_u32(buf, tap_pos, len, val);
2082 }
2083
2084 static void jlink_queue_data_out(const uint8_t *data, uint32_t len)
2085 {
2086 const uint32_t dir_out = 0xffffffff;
2087
2088 if (data)
2089 bit_copy(tdi_buffer, tap_length, data, 0, len);
2090 else
2091 fill_buffer(tdi_buffer, 0, len);
2092
2093 fill_buffer(tms_buffer, dir_out, len);
2094 tap_length += len;
2095 }
2096
2097 static void jlink_queue_data_in(uint32_t len)
2098 {
2099 const uint32_t dir_in = 0;
2100
2101 fill_buffer(tms_buffer, dir_in, len);
2102 tap_length += len;
2103 }
2104
2105 static int jlink_swd_switch_seq(enum swd_special_seq seq)
2106 {
2107 const uint8_t *s;
2108 unsigned int s_len;
2109
2110 switch (seq) {
2111 case LINE_RESET:
2112 LOG_DEBUG("SWD line reset");
2113 s = swd_seq_line_reset;
2114 s_len = swd_seq_line_reset_len;
2115 break;
2116 case JTAG_TO_SWD:
2117 LOG_DEBUG("JTAG-to-SWD");
2118 s = swd_seq_jtag_to_swd;
2119 s_len = swd_seq_jtag_to_swd_len;
2120 break;
2121 case JTAG_TO_DORMANT:
2122 LOG_DEBUG("JTAG-to-DORMANT");
2123 s = swd_seq_jtag_to_dormant;
2124 s_len = swd_seq_jtag_to_dormant_len;
2125 break;
2126 case SWD_TO_JTAG:
2127 LOG_DEBUG("SWD-to-JTAG");
2128 s = swd_seq_swd_to_jtag;
2129 s_len = swd_seq_swd_to_jtag_len;
2130 break;
2131 case SWD_TO_DORMANT:
2132 LOG_DEBUG("SWD-to-DORMANT");
2133 s = swd_seq_swd_to_dormant;
2134 s_len = swd_seq_swd_to_dormant_len;
2135 break;
2136 case DORMANT_TO_SWD:
2137 LOG_DEBUG("DORMANT-to-SWD");
2138 s = swd_seq_dormant_to_swd;
2139 s_len = swd_seq_dormant_to_swd_len;
2140 break;
2141 case DORMANT_TO_JTAG:
2142 LOG_DEBUG("DORMANT-to-JTAG");
2143 s = swd_seq_dormant_to_jtag;
2144 s_len = swd_seq_dormant_to_jtag_len;
2145 break;
2146 default:
2147 LOG_ERROR("Sequence %d not supported", seq);
2148 return ERROR_FAIL;
2149 }
2150
2151 jlink_queue_data_out(s, s_len);
2152
2153 return ERROR_OK;
2154 }
2155
2156 static int jlink_swd_run_queue(void)
2157 {
2158 int i;
2159 int ret;
2160
2161 LOG_DEBUG("Executing %d queued transactions", pending_scan_results_length);
2162
2163 if (queued_retval != ERROR_OK) {
2164 LOG_DEBUG("Skipping due to previous errors: %d", queued_retval);
2165 goto skip;
2166 }
2167
2168 /*
2169 * A transaction must be followed by another transaction or at least 8 idle
2170 * cycles to ensure that data is clocked through the AP.
2171 */
2172 jlink_queue_data_out(NULL, 8);
2173
2174 ret = jaylink_swd_io(devh, tms_buffer, tdi_buffer, tdo_buffer, tap_length);
2175
2176 if (ret != JAYLINK_OK) {
2177 LOG_ERROR("jaylink_swd_io() failed: %s", jaylink_strerror(ret));
2178 goto skip;
2179 }
2180
2181 for (i = 0; i < pending_scan_results_length; i++) {
2182 int ack = buf_get_u32(tdo_buffer, pending_scan_results_buffer[i].first, 3);
2183
2184 if (ack != SWD_ACK_OK) {
2185 LOG_DEBUG("SWD ack not OK: %d %s", ack,
2186 ack == SWD_ACK_WAIT ? "WAIT" : ack == SWD_ACK_FAULT ? "FAULT" : "JUNK");
2187 queued_retval = ack == SWD_ACK_WAIT ? ERROR_WAIT : ERROR_FAIL;
2188 goto skip;
2189 } else if (pending_scan_results_buffer[i].length) {
2190 uint32_t data = buf_get_u32(tdo_buffer, 3 + pending_scan_results_buffer[i].first, 32);
2191 int parity = buf_get_u32(tdo_buffer, 3 + 32 + pending_scan_results_buffer[i].first, 1);
2192
2193 if (parity != parity_u32(data)) {
2194 LOG_ERROR("SWD: Read data parity mismatch");
2195 queued_retval = ERROR_FAIL;
2196 goto skip;
2197 }
2198
2199 if (pending_scan_results_buffer[i].buffer)
2200 *(uint32_t *)pending_scan_results_buffer[i].buffer = data;
2201 }
2202 }
2203
2204 skip:
2205 jlink_tap_init();
2206 ret = queued_retval;
2207 queued_retval = ERROR_OK;
2208
2209 return ret;
2210 }
2211
2212 static void jlink_swd_queue_cmd(uint8_t cmd, uint32_t *dst, uint32_t data, uint32_t ap_delay_clk)
2213 {
2214 uint8_t data_parity_trn[DIV_ROUND_UP(32 + 1, 8)];
2215 if (tap_length + 46 + 8 + ap_delay_clk >= swd_buffer_size * 8 ||
2216 pending_scan_results_length == MAX_PENDING_SCAN_RESULTS) {
2217 /* Not enough room in the queue. Run the queue. */
2218 queued_retval = jlink_swd_run_queue();
2219 }
2220
2221 if (queued_retval != ERROR_OK)
2222 return;
2223
2224 cmd |= SWD_CMD_START | SWD_CMD_PARK;
2225
2226 jlink_queue_data_out(&cmd, 8);
2227
2228 pending_scan_results_buffer[pending_scan_results_length].first = tap_length;
2229
2230 if (cmd & SWD_CMD_RNW) {
2231 /* Queue a read transaction. */
2232 pending_scan_results_buffer[pending_scan_results_length].length = 32;
2233 pending_scan_results_buffer[pending_scan_results_length].buffer = dst;
2234
2235 jlink_queue_data_in(1 + 3 + 32 + 1 + 1);
2236 } else {
2237 /* Queue a write transaction. */
2238 pending_scan_results_buffer[pending_scan_results_length].length = 0;
2239 jlink_queue_data_in(1 + 3 + 1);
2240
2241 buf_set_u32(data_parity_trn, 0, 32, data);
2242 buf_set_u32(data_parity_trn, 32, 1, parity_u32(data));
2243
2244 jlink_queue_data_out(data_parity_trn, 32 + 1);
2245 }
2246
2247 pending_scan_results_length++;
2248
2249 /* Insert idle cycles after AP accesses to avoid WAIT. */
2250 if (cmd & SWD_CMD_APNDP)
2251 jlink_queue_data_out(NULL, ap_delay_clk);
2252 }
2253
2254 static const struct swd_driver jlink_swd = {
2255 .init = &jlink_swd_init,
2256 .switch_seq = &jlink_swd_switch_seq,
2257 .read_reg = &jlink_swd_read_reg,
2258 .write_reg = &jlink_swd_write_reg,
2259 .run = &jlink_swd_run_queue,
2260 };
2261
2262 static const char * const jlink_transports[] = { "jtag", "swd", NULL };
2263
2264 static struct jtag_interface jlink_interface = {
2265 .execute_queue = &jlink_execute_queue,
2266 };
2267
2268 struct adapter_driver jlink_adapter_driver = {
2269 .name = "jlink",
2270 .transports = jlink_transports,
2271 .commands = jlink_command_handlers,
2272
2273 .init = &jlink_init,
2274 .quit = &jlink_quit,
2275 .reset = &jlink_reset_safe,
2276 .speed = &jlink_speed,
2277 .khz = &jlink_khz,
2278 .speed_div = &jlink_speed_div,
2279 .config_trace = &config_trace,
2280 .poll_trace = &poll_trace,
2281
2282 .jtag_ops = &jlink_interface,
2283 .swd_ops = &jlink_swd,
2284 };
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