1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
23
24
25
26
27
28
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
133
134
135
136
137
138
159
160
161
162
163
164
165
166
167
168
169
176
177
178
179
180
181
182
183
184
185
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
230
231
241
242
247
248
249
250
251
252
253
254
255
256
257
260
261
262
263
264
265
269
270
271
272
273
274
275
276
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
346
347
348
349
350
351
352
353
354
355
356
357
358
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
418
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
460
461
465
466
467
468
469
471
472
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
503
504
505
506
507
508
509
510
518
524
525
526
527
528
529
530
531
532
533
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
554
555
556
557
558
559
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
611
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
708
709
716
717
718
719
720
721
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
796
797
806
807
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
894
895
898
899
900
901
902
903
904
905
906
907
908
909
/* ... */
/* ... */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "arm.h"
#include "arm_adi_v5.h"
#include <helper/time_support.h>
#include <helper/list.h>
#include <jtag/swd.h>
5 includes
#define JTAG_DP_ABORT 0xF8
#define JTAG_DP_DPACC 0xFA
#define JTAG_DP_APACC 0xFB
#define JTAG_DP_IDCODE 0xFE
#define JTAG_ACK_WAIT 0x1
#define JTAG_ACK_OK_FAULT 0x2
#define JTAG_ACK_FAULT 0x2
#define JTAG_ACK_OK 0x4
8 defines
static int jtag_ap_q_abort(struct adiv5_dap *dap, uint8_t *ack);
#ifdef DEBUG_WAIT
static const char *dap_reg_name(struct adiv5_dap *dap, uint8_t instr, uint16_t reg_addr)
{
char *reg_name = "UNK";
if (instr == JTAG_DP_DPACC) {
switch (reg_addr) {
case DP_ABORT:
reg_name = "ABORT";
break;case DP_ABORT:
case DP_CTRL_STAT:
reg_name = "CTRL/STAT";
break;case DP_CTRL_STAT:
case DP_SELECT:
reg_name = "SELECT";
break;case DP_SELECT:
case DP_RDBUFF:
reg_name = "RDBUFF";
break;case DP_RDBUFF:
case DP_DLCR:
reg_name = "DLCR";
break;case DP_DLCR:
default:
reg_name = "UNK";
break;default
}switch (reg_addr) { ... }
}if (instr == JTAG_DP_DPACC) { ... }
if (instr == JTAG_DP_APACC) {
if (reg_addr == MEM_AP_REG_CSW(dap))
reg_name = "CSW";
else if (reg_addr == MEM_AP_REG_TAR(dap))
reg_name = "TAR";
else if (reg_addr == MEM_AP_REG_TAR64(dap))
reg_name = "TAR64";
else if (reg_addr == MEM_AP_REG_DRW(dap))
reg_name = "DRW";
else if (reg_addr == MEM_AP_REG_BD0(dap))
reg_name = "BD0";
else if (reg_addr == MEM_AP_REG_BD1(dap))
reg_name = "BD1";
else if (reg_addr == MEM_AP_REG_BD2(dap))
reg_name = "BD2";
else if (reg_addr == MEM_AP_REG_BD3(dap))
reg_name = "BD3";
else if (reg_addr == MEM_AP_REG_CFG(dap))
reg_name = "CFG";
else if (reg_addr == MEM_AP_REG_BASE(dap))
reg_name = "BASE";
else if (reg_addr == MEM_AP_REG_BASE64(dap))
reg_name = "BASE64";
else if (reg_addr == AP_REG_IDR(dap))
reg_name = "IDR";
else
reg_name = "UNK";
}if (instr == JTAG_DP_APACC) { ... }
return reg_name;
}dap_reg_name (struct adiv5_dap *dap, uint8_t instr, uint16_t reg_addr) { ... }
/* ... */#endif
struct dap_cmd {
struct list_head lh;
uint8_t instr;
uint16_t reg_addr;
uint8_t rnw;
uint8_t *invalue;
uint8_t ack;
uint32_t memaccess_tck;
uint64_t dp_select;
struct scan_field fields[2];
uint8_t out_addr_buf;
uint8_t invalue_buf[4];
uint8_t outvalue_buf[4];
...};
#define MAX_DAP_COMMAND_NUM 65536
struct dap_cmd_pool {
struct list_head lh;
struct dap_cmd cmd;
...};
static void log_dap_cmd(struct adiv5_dap *dap, const char *header, struct dap_cmd *el)
{
#ifdef DEBUG_WAIT
const char *ack;
switch (el->ack) {
case JTAG_ACK_WAIT:
ack = "WAIT";
break;case JTAG_ACK_WAIT:
case JTAG_ACK_OK_FAULT:
if (is_adiv6(dap))
ack = "FAULT";
else
ack = "OK";
break;case JTAG_ACK_OK_FAULT:
case JTAG_ACK_OK:
if (is_adiv6(dap)) {
ack = "OK";
break;
}if (is_adiv6(dap)) { ... }
case JTAG_ACK_OK:
default:
ack = "INVAL";
break;default
}switch (el->ack) { ... }
LOG_DEBUG("%s: %2s %6s %5s 0x%08x 0x%08x %2s", header,
el->instr == JTAG_DP_APACC ? "AP" : "DP",
dap_reg_name(dap, el->instr, el->reg_addr),
el->rnw == DPAP_READ ? "READ" : "WRITE",
buf_get_u32(el->outvalue_buf, 0, 32),
buf_get_u32(el->invalue, 0, 32),
ack);/* ... */
#endif
}{ ... }
static int jtag_limit_queue_size(struct adiv5_dap *dap)
{
if (dap->cmd_pool_size < MAX_DAP_COMMAND_NUM)
return ERROR_OK;
return dap_run(dap);
}{ ... }
static struct dap_cmd *dap_cmd_new(struct adiv5_dap *dap, uint8_t instr,
uint16_t reg_addr, uint8_t rnw,
uint8_t *outvalue, uint8_t *invalue,
uint32_t memaccess_tck)
{
struct dap_cmd_pool *pool = NULL;
if (list_empty(&dap->cmd_pool)) {
pool = calloc(1, sizeof(struct dap_cmd_pool));
if (!pool)
return NULL;
}if (list_empty(&dap->cmd_pool)) { ... } else {
pool = list_first_entry(&dap->cmd_pool, struct dap_cmd_pool, lh);
list_del(&pool->lh);
}else { ... }
INIT_LIST_HEAD(&pool->lh);
dap->cmd_pool_size++;
struct dap_cmd *cmd = &pool->cmd;
INIT_LIST_HEAD(&cmd->lh);
cmd->instr = instr;
cmd->reg_addr = reg_addr;
cmd->rnw = rnw;
if (outvalue)
memcpy(cmd->outvalue_buf, outvalue, 4);
cmd->invalue = (invalue) ? invalue : cmd->invalue_buf;
cmd->memaccess_tck = memaccess_tck;
return cmd;
}{ ... }
static void dap_cmd_release(struct adiv5_dap *dap, struct dap_cmd *cmd)
{
struct dap_cmd_pool *pool = container_of(cmd, struct dap_cmd_pool, cmd);
if (dap->cmd_pool_size > MAX_DAP_COMMAND_NUM)
free(pool);
else
list_add(&pool->lh, &dap->cmd_pool);
dap->cmd_pool_size--;
}{ ... }
static void flush_journal(struct adiv5_dap *dap, struct list_head *lh)
{
struct dap_cmd *el, *tmp;
list_for_each_entry_safe(el, tmp, lh, lh) {
list_del(&el->lh);
dap_cmd_release(dap, el);
}list_for_each_entry_safe (el, tmp, lh, lh) { ... }
}{ ... }
static void jtag_quit(struct adiv5_dap *dap)
{
struct dap_cmd_pool *el, *tmp;
struct list_head *lh = &dap->cmd_pool;
list_for_each_entry_safe(el, tmp, lh, lh) {
list_del(&el->lh);
free(el);
}list_for_each_entry_safe (el, tmp, lh, lh) { ... }
}{ ... }
/* ... */
static int adi_jtag_dp_scan_cmd(struct adiv5_dap *dap, struct dap_cmd *cmd, uint8_t *ack)
{
struct jtag_tap *tap = dap->tap;
int retval;
retval = arm_jtag_set_instr(tap, cmd->instr, NULL, TAP_IDLE);
if (retval != ERROR_OK)
return retval;
/* ... */
cmd->fields[0].num_bits = 3;
buf_set_u32(&cmd->out_addr_buf, 0, 3, ((cmd->reg_addr >> 1) & 0x6) | (cmd->rnw & 0x1));
cmd->fields[0].out_value = &cmd->out_addr_buf;
cmd->fields[0].in_value = (ack) ? ack : &cmd->ack;
/* ... */
cmd->fields[1].num_bits = 32;
cmd->fields[1].out_value = cmd->outvalue_buf;
cmd->fields[1].in_value = cmd->invalue;
jtag_add_dr_scan(tap, 2, cmd->fields, TAP_IDLE);
/* ... */
if (cmd->instr == JTAG_DP_APACC && cmd->memaccess_tck != 0)
jtag_add_runtest(cmd->memaccess_tck, TAP_IDLE);
return ERROR_OK;
}{ ... }
static int adi_jtag_dp_scan_cmd_sync(struct adiv5_dap *dap, struct dap_cmd *cmd, uint8_t *ack)
{
int retval;
retval = adi_jtag_dp_scan_cmd(dap, cmd, ack);
if (retval != ERROR_OK)
return retval;
return jtag_execute_queue();
}{ ... }
/* ... */
static int adi_jtag_dp_scan(struct adiv5_dap *dap,
uint8_t instr, uint16_t reg_addr, uint8_t rnw,
uint8_t *outvalue, uint8_t *invalue,
uint32_t memaccess_tck, uint8_t *ack)
{
struct dap_cmd *cmd;
int retval;
cmd = dap_cmd_new(dap, instr, reg_addr, rnw, outvalue, invalue, memaccess_tck);
if (cmd)
cmd->dp_select = dap->select;
else
return ERROR_JTAG_DEVICE_ERROR;
retval = adi_jtag_dp_scan_cmd(dap, cmd, ack);
if (retval == ERROR_OK)
list_add_tail(&cmd->lh, &dap->cmd_journal);
return retval;
}{ ... }
/* ... */
static int adi_jtag_dp_scan_u32(struct adiv5_dap *dap,
uint8_t instr, uint16_t reg_addr, uint8_t rnw,
uint32_t outvalue, uint32_t *invalue,
uint32_t memaccess_tck, uint8_t *ack)
{
uint8_t out_value_buf[4];
int retval;
uint64_t sel = (reg_addr >> 4) & DP_SELECT_DPBANK;
if (instr == JTAG_DP_DPACC && reg_addr != DP_SELECT && reg_addr != DP_RDBUFF
&& (!dap->select_valid || sel != (dap->select & DP_SELECT_DPBANK))) {
/* ... */
sel |= dap->select & SELECT_AP_MASK;
LOG_DEBUG_IO("DP BANK SELECT: %" PRIx32, (uint32_t)sel);
buf_set_u32(out_value_buf, 0, 32, (uint32_t)sel);
retval = adi_jtag_dp_scan(dap, JTAG_DP_DPACC,
DP_SELECT, DPAP_WRITE, out_value_buf, NULL, 0, NULL);
if (retval != ERROR_OK)
return retval;
dap->select = sel;
dap->select_valid = true;
}if (instr == JTAG_DP_DPACC && reg_addr != DP_SELECT && reg_addr != DP_RDBUFF && (!dap->select_valid || sel != (dap->select & DP_SELECT_DPBANK))) { ... }
buf_set_u32(out_value_buf, 0, 32, outvalue);
retval = adi_jtag_dp_scan(dap, instr, reg_addr, rnw,
out_value_buf, (uint8_t *)invalue, memaccess_tck, ack);
if (retval != ERROR_OK)
return retval;
if (invalue)
jtag_add_callback(arm_le_to_h_u32,
(jtag_callback_data_t) invalue);
return retval;
}{ ... }
static int adi_jtag_finish_read(struct adiv5_dap *dap)
{
int retval = ERROR_OK;
if (dap->last_read) {
retval = adi_jtag_dp_scan_u32(dap, JTAG_DP_DPACC,
DP_RDBUFF, DPAP_READ, 0, dap->last_read, 0, NULL);
dap->last_read = NULL;
}if (dap->last_read) { ... }
return retval;
}{ ... }
static int adi_jtag_scan_inout_check_u32(struct adiv5_dap *dap,
uint8_t instr, uint16_t reg_addr, uint8_t rnw,
uint32_t outvalue, uint32_t *invalue, uint32_t memaccess_tck)
{
int retval;
retval = adi_jtag_dp_scan_u32(dap, instr, reg_addr,
rnw, outvalue, NULL, memaccess_tck, NULL);
if (retval != ERROR_OK)
return retval;
/* ... */
if ((rnw == DPAP_READ) && (invalue)) {
retval = adi_jtag_dp_scan_u32(dap, JTAG_DP_DPACC,
DP_RDBUFF, DPAP_READ, 0, invalue, 0, NULL);
if (retval != ERROR_OK)
return retval;
}if ((rnw == DPAP_READ) && (invalue)) { ... }
return jtag_execute_queue();
}{ ... }
static int jtagdp_overrun_check(struct adiv5_dap *dap)
{
int retval;
struct dap_cmd *el, *tmp, *prev = NULL;
int found_wait = 0;
int64_t time_now;
LIST_HEAD(replay_list);
retval = jtag_execute_queue();
if (retval != ERROR_OK)
goto done;
list_for_each_entry(el, &dap->cmd_journal, lh) {
/* ... */
if (el->ack == JTAG_ACK_OK_FAULT || (is_adiv6(dap) && el->ack == JTAG_ACK_OK)) {
log_dap_cmd(dap, "LOG", el);
}if (el->ack == JTAG_ACK_OK_FAULT || (is_adiv6(dap) && el->ack == JTAG_ACK_OK)) { ... } else if (el->ack == JTAG_ACK_WAIT) {
found_wait = 1;
break;
}else if (el->ack == JTAG_ACK_WAIT) { ... } else {
LOG_ERROR("Invalid ACK (%1x) in DAP response", el->ack);
log_dap_cmd(dap, "ERR", el);
retval = ERROR_JTAG_DEVICE_ERROR;
goto done;
}else { ... }
}list_for_each_entry (el, &dap->cmd_journal, lh) { ... }
/* ... */
if (found_wait && el != list_first_entry(&dap->cmd_journal, struct dap_cmd, lh)) {
prev = list_entry(el->lh.prev, struct dap_cmd, lh);
if (prev->rnw == DPAP_READ) {
log_dap_cmd(dap, "PND", prev);
/* ... */
tmp = el;
list_for_each_entry_from(tmp, &dap->cmd_journal, lh) {
if (tmp->ack == JTAG_ACK_OK_FAULT || (is_adiv6(dap) && tmp->ack == JTAG_ACK_OK)) {
log_dap_cmd(dap, "FND", tmp);
if (el->invalue != el->invalue_buf) {
uint32_t invalue = le_to_h_u32(tmp->invalue);
memcpy(el->invalue, &invalue, sizeof(uint32_t));
}if (el->invalue != el->invalue_buf) { ... }
prev = NULL;
break;
}if (tmp->ack == JTAG_ACK_OK_FAULT || (is_adiv6(dap) && tmp->ack == JTAG_ACK_OK)) { ... }
}list_for_each_entry_from (tmp, &dap->cmd_journal, lh) { ... }
if (prev) {
log_dap_cmd(dap, "LST", el);
/* ... */
tmp = dap_cmd_new(dap, JTAG_DP_DPACC,
DP_RDBUFF, DPAP_READ, NULL, NULL, 0);
if (!tmp) {
retval = ERROR_JTAG_DEVICE_ERROR;
goto done;
}if (!tmp) { ... }
time_now = timeval_ms();
do {
retval = adi_jtag_dp_scan_cmd_sync(dap, tmp, NULL);
if (retval != ERROR_OK)
break;
if (tmp->ack == JTAG_ACK_OK_FAULT || (is_adiv6(dap) && tmp->ack == JTAG_ACK_OK)) {
log_dap_cmd(dap, "FND", tmp);
if (el->invalue != el->invalue_buf) {
uint32_t invalue = le_to_h_u32(tmp->invalue);
memcpy(el->invalue, &invalue, sizeof(uint32_t));
}if (el->invalue != el->invalue_buf) { ... }
break;
}if (tmp->ack == JTAG_ACK_OK_FAULT || (is_adiv6(dap) && tmp->ack == JTAG_ACK_OK)) { ... }
if (tmp->ack != JTAG_ACK_WAIT) {
LOG_ERROR("Invalid ACK (%1x) in DAP response", tmp->ack);
log_dap_cmd(dap, "ERR", tmp);
retval = ERROR_JTAG_DEVICE_ERROR;
break;
}if (tmp->ack != JTAG_ACK_WAIT) { ... }
...} while (timeval_ms() - time_now < 1000);
if (retval == ERROR_OK) {
if (tmp->ack == JTAG_ACK_WAIT) {
LOG_ERROR("Timeout during WAIT recovery");
dap->select_valid = false;
dap->select1_valid = false;
/* ... */
jtag_ap_q_abort(dap, NULL);
adi_jtag_scan_inout_check_u32(dap, JTAG_DP_DPACC,
DP_CTRL_STAT, DPAP_WRITE,
dap->dp_ctrl_stat | SSTICKYORUN, NULL, 0);
retval = ERROR_JTAG_DEVICE_ERROR;
}if (tmp->ack == JTAG_ACK_WAIT) { ... }
}if (retval == ERROR_OK) { ... }
dap_cmd_release(dap, tmp);
if (retval != ERROR_OK)
goto done;
}if (prev) { ... }
/* ... */
el->invalue = el->invalue_buf;
}if (prev->rnw == DPAP_READ) { ... }
}if (found_wait && el != list_first_entry(&dap->cmd_journal, struct dap_cmd, lh)) { ... }
list_for_each_entry_safe_from(el, tmp, &dap->cmd_journal, lh) {
log_dap_cmd(dap, "REP", el);
list_move_tail(&el->lh, &replay_list);
}list_for_each_entry_safe_from (el, tmp, &dap->cmd_journal, lh) { ... }
flush_journal(dap, &dap->cmd_journal);
if (found_wait) {
LOG_INFO("DAP transaction stalled (WAIT) - slowing down and resending");
retval = adi_jtag_scan_inout_check_u32(dap, JTAG_DP_DPACC,
DP_CTRL_STAT, DPAP_WRITE,
dap->dp_ctrl_stat | SSTICKYORUN, NULL, 0);
if (retval != ERROR_OK)
goto done;
if (!list_empty(&replay_list)) {
el = list_first_entry(&replay_list, struct dap_cmd, lh);
uint8_t out_value_buf[4];
buf_set_u32(out_value_buf, 0, 32, (uint32_t)(el->dp_select));
tmp = dap_cmd_new(dap, JTAG_DP_DPACC,
DP_SELECT, DPAP_WRITE, out_value_buf, NULL, 0);
if (!tmp) {
retval = ERROR_JTAG_DEVICE_ERROR;
goto done;
}if (!tmp) { ... }
list_add(&tmp->lh, &replay_list);
dap->select_valid = false;
}if (!list_empty(&replay_list)) { ... }
list_for_each_entry_safe(el, tmp, &replay_list, lh) {
time_now = timeval_ms();
do {
retval = adi_jtag_dp_scan_cmd_sync(dap, el, NULL);
if (retval != ERROR_OK)
break;
log_dap_cmd(dap, "REC", el);
if (el->ack == JTAG_ACK_OK_FAULT || (is_adiv6(dap) && el->ack == JTAG_ACK_OK)) {
if (el->invalue != el->invalue_buf) {
uint32_t invalue = le_to_h_u32(el->invalue);
memcpy(el->invalue, &invalue, sizeof(uint32_t));
}if (el->invalue != el->invalue_buf) { ... }
break;
}if (el->ack == JTAG_ACK_OK_FAULT || (is_adiv6(dap) && el->ack == JTAG_ACK_OK)) { ... }
if (el->ack != JTAG_ACK_WAIT) {
LOG_ERROR("Invalid ACK (%1x) in DAP response", el->ack);
log_dap_cmd(dap, "ERR", el);
retval = ERROR_JTAG_DEVICE_ERROR;
break;
}if (el->ack != JTAG_ACK_WAIT) { ... }
LOG_DEBUG("DAP transaction stalled during replay (WAIT) - resending");
retval = adi_jtag_scan_inout_check_u32(dap, JTAG_DP_DPACC,
DP_CTRL_STAT, DPAP_WRITE,
dap->dp_ctrl_stat | SSTICKYORUN, NULL, 0);
if (retval != ERROR_OK)
break;
...} while (timeval_ms() - time_now < 1000);
if (retval == ERROR_OK) {
if (el->ack == JTAG_ACK_WAIT) {
LOG_ERROR("Timeout during WAIT recovery");
dap->select_valid = false;
dap->select1_valid = false;
/* ... */
jtag_ap_q_abort(dap, NULL);
adi_jtag_scan_inout_check_u32(dap, JTAG_DP_DPACC,
DP_CTRL_STAT, DPAP_WRITE,
dap->dp_ctrl_stat | SSTICKYORUN, NULL, 0);
retval = ERROR_JTAG_DEVICE_ERROR;
break;
}if (el->ack == JTAG_ACK_WAIT) { ... }
}if (retval == ERROR_OK) { ... } else
break;
}list_for_each_entry_safe (el, tmp, &replay_list, lh) { ... }
}if (found_wait) { ... }
done:
flush_journal(dap, &replay_list);
flush_journal(dap, &dap->cmd_journal);
return retval;
}{ ... }
static int jtagdp_transaction_endcheck(struct adiv5_dap *dap)
{
int retval;
uint32_t ctrlstat, pwrmask;
/* ... */
retval = adi_jtag_scan_inout_check_u32(dap, JTAG_DP_DPACC,
DP_CTRL_STAT, DPAP_READ, 0, &ctrlstat, 0);
if (retval != ERROR_OK)
goto done;
if (ctrlstat & SSTICKYERR) {
LOG_DEBUG("jtag-dp: CTRL/STAT 0x%" PRIx32, ctrlstat);
pwrmask = CDBGPWRUPREQ | CDBGPWRUPACK | CSYSPWRUPREQ;
if (!dap->ignore_syspwrupack)
pwrmask |= CSYSPWRUPACK;
if ((ctrlstat & pwrmask) != pwrmask) {
LOG_ERROR("Debug regions are unpowered, an unexpected reset might have happened");
dap->do_reconnect = true;
}if ((ctrlstat & pwrmask) != pwrmask) { ... }
if (ctrlstat & SSTICKYERR)
LOG_ERROR("JTAG-DP STICKY ERROR");
if (ctrlstat & SSTICKYORUN)
LOG_DEBUG("JTAG-DP STICKY OVERRUN");
retval = adi_jtag_scan_inout_check_u32(dap, JTAG_DP_DPACC,
DP_CTRL_STAT, DPAP_WRITE,
dap->dp_ctrl_stat | SSTICKYERR | SSTICKYORUN, NULL, 0);
if (retval != ERROR_OK)
goto done;
retval = ERROR_JTAG_DEVICE_ERROR;
}if (ctrlstat & SSTICKYERR) { ... }
done:
flush_journal(dap, &dap->cmd_journal);
return retval;
}{ ... }
static int jtag_connect(struct adiv5_dap *dap)
{
dap->do_reconnect = false;
return dap_dp_init(dap);
}{ ... }
static int jtag_check_reconnect(struct adiv5_dap *dap)
{
if (dap->do_reconnect)
return jtag_connect(dap);
return ERROR_OK;
}{ ... }
static int jtag_send_sequence(struct adiv5_dap *dap, enum swd_special_seq seq)
{
int retval;
switch (seq) {
case JTAG_TO_SWD:
retval = jtag_add_tms_seq(swd_seq_jtag_to_swd_len,
swd_seq_jtag_to_swd, TAP_INVALID);
break;case JTAG_TO_SWD:
case SWD_TO_JTAG:
retval = jtag_add_tms_seq(swd_seq_swd_to_jtag_len,
swd_seq_swd_to_jtag, TAP_RESET);
break;case SWD_TO_JTAG:
default:
LOG_ERROR("Sequence %d not supported", seq);
return ERROR_FAIL;default
}switch (seq) { ... }
if (retval == ERROR_OK)
retval = jtag_execute_queue();
return retval;
}{ ... }
static int jtag_dp_q_read(struct adiv5_dap *dap, unsigned reg,
uint32_t *data)
{
int retval = jtag_limit_queue_size(dap);
if (retval != ERROR_OK)
return retval;
retval = adi_jtag_dp_scan_u32(dap, JTAG_DP_DPACC, reg,
DPAP_READ, 0, dap->last_read, 0, NULL);
dap->last_read = data;
return retval;
}{ ... }
static int jtag_dp_q_write(struct adiv5_dap *dap, unsigned reg,
uint32_t data)
{
int retval = jtag_limit_queue_size(dap);
if (retval != ERROR_OK)
return retval;
retval = adi_jtag_dp_scan_u32(dap, JTAG_DP_DPACC,
reg, DPAP_WRITE, data, dap->last_read, 0, NULL);
dap->last_read = NULL;
return retval;
}{ ... }
static int jtag_ap_q_bankselect(struct adiv5_ap *ap, unsigned reg)
{
int retval;
struct adiv5_dap *dap = ap->dap;
uint64_t sel;
if (is_adiv6(dap))
sel = ap->ap_num | (reg & 0x00000FF0);
else
sel = (ap->ap_num << 24) | (reg & ADIV5_DP_SELECT_APBANK);
uint64_t sel_diff = (sel ^ dap->select) & SELECT_AP_MASK;
bool set_select = !dap->select_valid || (sel_diff & 0xffffffffull);
bool set_select1 = is_adiv6(dap) && dap->asize > 32
&& (!dap->select1_valid
|| sel_diff & (0xffffffffull << 32));
if (set_select && set_select1) {
sel |= (DP_SELECT1 >> 4) & DP_SELECT_DPBANK;
}if (set_select && set_select1) { ... } else {
/* ... */
sel |= dap->select & DP_SELECT_DPBANK;
}else { ... }
if (set_select) {
LOG_DEBUG_IO("AP BANK SELECT: %" PRIx32, (uint32_t)sel);
retval = jtag_dp_q_write(dap, DP_SELECT, (uint32_t)sel);
if (retval != ERROR_OK) {
dap->select_valid = false;
return retval;
}if (retval != ERROR_OK) { ... }
}if (set_select) { ... }
if (set_select1) {
LOG_DEBUG_IO("AP BANK SELECT1: %" PRIx32, (uint32_t)(sel >> 32));
retval = jtag_dp_q_write(dap, DP_SELECT1, (uint32_t)(sel >> 32));
if (retval != ERROR_OK) {
dap->select1_valid = false;
return retval;
}if (retval != ERROR_OK) { ... }
}if (set_select1) { ... }
dap->select = sel;
return ERROR_OK;
}{ ... }
static int jtag_ap_q_read(struct adiv5_ap *ap, unsigned reg,
uint32_t *data)
{
int retval = jtag_limit_queue_size(ap->dap);
if (retval != ERROR_OK)
return retval;
retval = jtag_check_reconnect(ap->dap);
if (retval != ERROR_OK)
return retval;
retval = jtag_ap_q_bankselect(ap, reg);
if (retval != ERROR_OK)
return retval;
retval = adi_jtag_dp_scan_u32(ap->dap, JTAG_DP_APACC, reg,
DPAP_READ, 0, ap->dap->last_read, ap->memaccess_tck, NULL);
ap->dap->last_read = data;
return retval;
}{ ... }
static int jtag_ap_q_write(struct adiv5_ap *ap, unsigned reg,
uint32_t data)
{
int retval = jtag_limit_queue_size(ap->dap);
if (retval != ERROR_OK)
return retval;
retval = jtag_check_reconnect(ap->dap);
if (retval != ERROR_OK)
return retval;
retval = jtag_ap_q_bankselect(ap, reg);
if (retval != ERROR_OK)
return retval;
retval = adi_jtag_dp_scan_u32(ap->dap, JTAG_DP_APACC, reg,
DPAP_WRITE, data, ap->dap->last_read, ap->memaccess_tck, NULL);
ap->dap->last_read = NULL;
return retval;
}{ ... }
static int jtag_ap_q_abort(struct adiv5_dap *dap, uint8_t *ack)
{
int retval = adi_jtag_dp_scan_u32(dap, JTAG_DP_ABORT,
0, DPAP_WRITE, 1, NULL, 0, NULL);
if (retval != ERROR_OK)
return retval;
return jtag_execute_queue();
}{ ... }
static int jtag_dp_run(struct adiv5_dap *dap)
{
int retval;
int retval2 = ERROR_OK;
retval = adi_jtag_finish_read(dap);
if (retval != ERROR_OK)
goto done;
retval2 = jtagdp_overrun_check(dap);
retval = jtagdp_transaction_endcheck(dap);
done:
return (retval2 != ERROR_OK) ? retval2 : retval;
}{ ... }
static int jtag_dp_sync(struct adiv5_dap *dap)
{
return jtagdp_overrun_check(dap);
}{ ... }
/* ... */
const struct dap_ops jtag_dp_ops = {
.connect = jtag_connect,
.send_sequence = jtag_send_sequence,
.queue_dp_read = jtag_dp_q_read,
.queue_dp_write = jtag_dp_q_write,
.queue_ap_read = jtag_ap_q_read,
.queue_ap_write = jtag_ap_q_write,
.queue_ap_abort = jtag_ap_q_abort,
.run = jtag_dp_run,
.sync = jtag_dp_sync,
.quit = jtag_quit,
...};