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[openocd.git] / src / target / arm_adi_v5.c
1 /***************************************************************************
2 * Copyright (C) 2006 by Magnus Lundin *
3 * lundin@mlu.mine.nu *
4 * *
5 * Copyright (C) 2008 by Spencer Oliver *
6 * spen@spen-soft.co.uk *
7 * *
8 * Copyright (C) 2009-2010 by Oyvind Harboe *
9 * oyvind.harboe@zylin.com *
10 * *
11 * Copyright (C) 2009-2010 by David Brownell *
12 * *
13 * This program is free software; you can redistribute it and/or modify *
14 * it under the terms of the GNU General Public License as published by *
15 * the Free Software Foundation; either version 2 of the License, or *
16 * (at your option) any later version. *
17 * *
18 * This program is distributed in the hope that it will be useful, *
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
21 * GNU General Public License for more details. *
22 * *
23 * You should have received a copy of the GNU General Public License *
24 * along with this program; if not, write to the *
25 * Free Software Foundation, Inc., *
26 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
27 ***************************************************************************/
28
29 /**
30 * @file
31 * This file implements support for the ARM Debug Interface version 5 (ADIv5)
32 * debugging architecture. Compared with previous versions, this includes
33 * a low pin-count Serial Wire Debug (SWD) alternative to JTAG for message
34 * transport, and focusses on memory mapped resources as defined by the
35 * CoreSight architecture.
36 *
37 * A key concept in ADIv5 is the Debug Access Port, or DAP. A DAP has two
38 * basic components: a Debug Port (DP) transporting messages to and from a
39 * debugger, and an Access Port (AP) accessing resources. Three types of DP
40 * are defined. One uses only JTAG for communication, and is called JTAG-DP.
41 * One uses only SWD for communication, and is called SW-DP. The third can
42 * use either SWD or JTAG, and is called SWJ-DP. The most common type of AP
43 * is used to access memory mapped resources and is called a MEM-AP. Also a
44 * JTAG-AP is also defined, bridging to JTAG resources; those are uncommon.
45 *
46 * This programming interface allows DAP pipelined operations through a
47 * transaction queue. This primarily affects AP operations (such as using
48 * a MEM-AP to access memory or registers). If the current transaction has
49 * not finished by the time the next one must begin, and the ORUNDETECT bit
50 * is set in the DP_CTRL_STAT register, the SSTICKYORUN status is set and
51 * further AP operations will fail. There are two basic methods to avoid
52 * such overrun errors. One involves polling for status instead of using
53 * transaction piplining. The other involves adding delays to ensure the
54 * AP has enough time to complete one operation before starting the next
55 * one. (For JTAG these delays are controlled by memaccess_tck.)
56 */
57
58 /*
59 * Relevant specifications from ARM include:
60 *
61 * ARM(tm) Debug Interface v5 Architecture Specification ARM IHI 0031A
62 * CoreSight(tm) v1.0 Architecture Specification ARM IHI 0029B
63 *
64 * CoreSight(tm) DAP-Lite TRM, ARM DDI 0316D
65 * Cortex-M3(tm) TRM, ARM DDI 0337G
66 */
67
68 #ifdef HAVE_CONFIG_H
69 #include "config.h"
70 #endif
71
72 #include "jtag/interface.h"
73 #include "arm.h"
74 #include "arm_adi_v5.h"
75 #include <helper/time_support.h>
76
77 /* ARM ADI Specification requires at least 10 bits used for TAR autoincrement */
78
79 /*
80 uint32_t tar_block_size(uint32_t address)
81 Return the largest block starting at address that does not cross a tar block size alignment boundary
82 */
83 static uint32_t max_tar_block_size(uint32_t tar_autoincr_block, uint32_t address)
84 {
85 return (tar_autoincr_block - ((tar_autoincr_block - 1) & address)) >> 2;
86 }
87
88 /***************************************************************************
89 * *
90 * DP and MEM-AP register access through APACC and DPACC *
91 * *
92 ***************************************************************************/
93
94 /**
95 * Select one of the APs connected to the specified DAP. The
96 * selection is implicitly used with future AP transactions.
97 * This is a NOP if the specified AP is already selected.
98 *
99 * @param dap The DAP
100 * @param apsel Number of the AP to (implicitly) use with further
101 * transactions. This normally identifies a MEM-AP.
102 */
103 void dap_ap_select(struct adiv5_dap *dap, uint8_t ap)
104 {
105 uint32_t new_ap = (ap << 24) & 0xFF000000;
106
107 if (new_ap != dap->ap_current) {
108 dap->ap_current = new_ap;
109 /* Switching AP invalidates cached values.
110 * Values MUST BE UPDATED BEFORE AP ACCESS.
111 */
112 dap->ap_bank_value = -1;
113 dap->ap_csw_value = -1;
114 dap->ap_tar_value = -1;
115 }
116 }
117
118 /**
119 * Queue transactions setting up transfer parameters for the
120 * currently selected MEM-AP.
121 *
122 * Subsequent transfers using registers like AP_REG_DRW or AP_REG_BD2
123 * initiate data reads or writes using memory or peripheral addresses.
124 * If the CSW is configured for it, the TAR may be automatically
125 * incremented after each transfer.
126 *
127 * @todo Rename to reflect it being specifically a MEM-AP function.
128 *
129 * @param dap The DAP connected to the MEM-AP.
130 * @param csw MEM-AP Control/Status Word (CSW) register to assign. If this
131 * matches the cached value, the register is not changed.
132 * @param tar MEM-AP Transfer Address Register (TAR) to assign. If this
133 * matches the cached address, the register is not changed.
134 *
135 * @return ERROR_OK if the transaction was properly queued, else a fault code.
136 */
137 int dap_setup_accessport(struct adiv5_dap *dap, uint32_t csw, uint32_t tar)
138 {
139 int retval;
140 csw = csw | CSW_DBGSWENABLE | CSW_MASTER_DEBUG | CSW_HPROT |
141 dap->apcsw[dap->ap_current >> 24];
142
143 if (csw != dap->ap_csw_value) {
144 /* LOG_DEBUG("DAP: Set CSW %x",csw); */
145 retval = dap_queue_ap_write(dap, AP_REG_CSW, csw);
146 if (retval != ERROR_OK)
147 return retval;
148 dap->ap_csw_value = csw;
149 }
150 if (tar != dap->ap_tar_value) {
151 /* LOG_DEBUG("DAP: Set TAR %x",tar); */
152 retval = dap_queue_ap_write(dap, AP_REG_TAR, tar);
153 if (retval != ERROR_OK)
154 return retval;
155 dap->ap_tar_value = tar;
156 }
157 /* Disable TAR cache when autoincrementing */
158 if (csw & CSW_ADDRINC_MASK)
159 dap->ap_tar_value = -1;
160 return ERROR_OK;
161 }
162
163 /**
164 * Asynchronous (queued) read of a word from memory or a system register.
165 *
166 * @param dap The DAP connected to the MEM-AP performing the read.
167 * @param address Address of the 32-bit word to read; it must be
168 * readable by the currently selected MEM-AP.
169 * @param value points to where the word will be stored when the
170 * transaction queue is flushed (assuming no errors).
171 *
172 * @return ERROR_OK for success. Otherwise a fault code.
173 */
174 int mem_ap_read_u32(struct adiv5_dap *dap, uint32_t address,
175 uint32_t *value)
176 {
177 int retval;
178
179 /* Use banked addressing (REG_BDx) to avoid some link traffic
180 * (updating TAR) when reading several consecutive addresses.
181 */
182 retval = dap_setup_accessport(dap, CSW_32BIT | CSW_ADDRINC_OFF,
183 address & 0xFFFFFFF0);
184 if (retval != ERROR_OK)
185 return retval;
186
187 return dap_queue_ap_read(dap, AP_REG_BD0 | (address & 0xC), value);
188 }
189
190 /**
191 * Synchronous read of a word from memory or a system register.
192 * As a side effect, this flushes any queued transactions.
193 *
194 * @param dap The DAP connected to the MEM-AP performing the read.
195 * @param address Address of the 32-bit word to read; it must be
196 * readable by the currently selected MEM-AP.
197 * @param value points to where the result will be stored.
198 *
199 * @return ERROR_OK for success; *value holds the result.
200 * Otherwise a fault code.
201 */
202 int mem_ap_read_atomic_u32(struct adiv5_dap *dap, uint32_t address,
203 uint32_t *value)
204 {
205 int retval;
206
207 retval = mem_ap_read_u32(dap, address, value);
208 if (retval != ERROR_OK)
209 return retval;
210
211 return dap_run(dap);
212 }
213
214 /**
215 * Asynchronous (queued) write of a word to memory or a system register.
216 *
217 * @param dap The DAP connected to the MEM-AP.
218 * @param address Address to be written; it must be writable by
219 * the currently selected MEM-AP.
220 * @param value Word that will be written to the address when transaction
221 * queue is flushed (assuming no errors).
222 *
223 * @return ERROR_OK for success. Otherwise a fault code.
224 */
225 int mem_ap_write_u32(struct adiv5_dap *dap, uint32_t address,
226 uint32_t value)
227 {
228 int retval;
229
230 /* Use banked addressing (REG_BDx) to avoid some link traffic
231 * (updating TAR) when writing several consecutive addresses.
232 */
233 retval = dap_setup_accessport(dap, CSW_32BIT | CSW_ADDRINC_OFF,
234 address & 0xFFFFFFF0);
235 if (retval != ERROR_OK)
236 return retval;
237
238 return dap_queue_ap_write(dap, AP_REG_BD0 | (address & 0xC),
239 value);
240 }
241
242 /**
243 * Synchronous write of a word to memory or a system register.
244 * As a side effect, this flushes any queued transactions.
245 *
246 * @param dap The DAP connected to the MEM-AP.
247 * @param address Address to be written; it must be writable by
248 * the currently selected MEM-AP.
249 * @param value Word that will be written.
250 *
251 * @return ERROR_OK for success; the data was written. Otherwise a fault code.
252 */
253 int mem_ap_write_atomic_u32(struct adiv5_dap *dap, uint32_t address,
254 uint32_t value)
255 {
256 int retval = mem_ap_write_u32(dap, address, value);
257
258 if (retval != ERROR_OK)
259 return retval;
260
261 return dap_run(dap);
262 }
263
264 /*****************************************************************************
265 * *
266 * mem_ap_write_buf(struct adiv5_dap *dap, uint8_t *buffer, int count, uint32_t address, bool addr_incr) *
267 * *
268 * Write a buffer in target order (little endian) *
269 * *
270 *****************************************************************************/
271 int mem_ap_write_buf_u32(struct adiv5_dap *dap, const uint8_t *buffer, int count, uint32_t address, bool addr_incr)
272 {
273 int wcount, blocksize, writecount, errorcount = 0, retval = ERROR_OK;
274 uint32_t adr = address;
275 const uint8_t *pBuffer = buffer;
276 uint32_t incr_flag = CSW_ADDRINC_OFF;
277
278 count >>= 2;
279 wcount = count;
280
281 /* if we have an unaligned access - reorder data */
282 if (adr & 0x3u) {
283 for (writecount = 0; writecount < count; writecount++) {
284 int i;
285 uint32_t outvalue;
286 memcpy(&outvalue, pBuffer, sizeof(uint32_t));
287
288 for (i = 0; i < 4; i++) {
289 *((uint8_t *)pBuffer + (adr & 0x3)) = outvalue;
290 outvalue >>= 8;
291 adr++;
292 }
293 pBuffer += sizeof(uint32_t);
294 }
295 }
296
297 while (wcount > 0) {
298 /* Adjust to write blocks within boundaries aligned to the TAR autoincremnent size*/
299 blocksize = max_tar_block_size(dap->tar_autoincr_block, address);
300 if (wcount < blocksize)
301 blocksize = wcount;
302
303 /* handle unaligned data at 4k boundary */
304 if (blocksize == 0)
305 blocksize = 1;
306
307 if (addr_incr)
308 incr_flag = CSW_ADDRINC_SINGLE;
309
310 retval = dap_setup_accessport(dap, CSW_32BIT | incr_flag, address);
311 if (retval != ERROR_OK)
312 return retval;
313
314 for (writecount = 0; writecount < blocksize; writecount++) {
315 uint32_t tmp;
316 tmp = buf_get_u32(buffer + 4 * writecount, 0, 32);
317 retval = dap_queue_ap_write(dap, AP_REG_DRW, tmp);
318 if (retval != ERROR_OK)
319 break;
320 }
321
322 retval = dap_run(dap);
323 if (retval == ERROR_OK) {
324 wcount = wcount - blocksize;
325 if (addr_incr)
326 address = address + 4 * blocksize;
327 buffer = buffer + 4 * blocksize;
328 } else
329 errorcount++;
330
331 if (errorcount > 1) {
332 LOG_WARNING("Block write error address 0x%" PRIx32 ", wcount 0x%x", address, wcount);
333 return retval;
334 }
335 }
336
337 return retval;
338 }
339
340 static int mem_ap_write_buf_packed_u16(struct adiv5_dap *dap,
341 const uint8_t *buffer, int count, uint32_t address)
342 {
343 int retval = ERROR_OK;
344 int wcount, blocksize, writecount, i;
345
346 wcount = count >> 1;
347
348 while (wcount > 0) {
349 int nbytes;
350
351 /* Adjust to write blocks within boundaries aligned to the TAR autoincremnent size*/
352 blocksize = max_tar_block_size(dap->tar_autoincr_block, address);
353
354 if (wcount < blocksize)
355 blocksize = wcount;
356
357 /* handle unaligned data at 4k boundary */
358 if (blocksize == 0)
359 blocksize = 1;
360
361 retval = dap_setup_accessport(dap, CSW_16BIT | CSW_ADDRINC_PACKED, address);
362 if (retval != ERROR_OK)
363 return retval;
364 writecount = blocksize;
365
366 do {
367 nbytes = MIN((writecount << 1), 4);
368
369 if (nbytes < 4) {
370 retval = mem_ap_write_buf_u16(dap, buffer,
371 nbytes, address);
372 if (retval != ERROR_OK) {
373 LOG_WARNING("Block write error address "
374 "0x%" PRIx32 ", count 0x%x",
375 address, count);
376 return retval;
377 }
378
379 address += nbytes >> 1;
380 } else {
381 uint32_t outvalue;
382 memcpy(&outvalue, buffer, sizeof(uint32_t));
383
384 for (i = 0; i < nbytes; i++) {
385 *((uint8_t *)buffer + (address & 0x3)) = outvalue;
386 outvalue >>= 8;
387 address++;
388 }
389
390 memcpy(&outvalue, buffer, sizeof(uint32_t));
391 retval = dap_queue_ap_write(dap,
392 AP_REG_DRW, outvalue);
393 if (retval != ERROR_OK)
394 break;
395
396 retval = dap_run(dap);
397 if (retval != ERROR_OK) {
398 LOG_WARNING("Block write error address "
399 "0x%" PRIx32 ", count 0x%x",
400 address, count);
401 return retval;
402 }
403 }
404
405 buffer += nbytes >> 1;
406 writecount -= nbytes >> 1;
407
408 } while (writecount);
409 wcount -= blocksize;
410 }
411
412 return retval;
413 }
414
415 int mem_ap_write_buf_u16(struct adiv5_dap *dap, const uint8_t *buffer, int count, uint32_t address)
416 {
417 int retval = ERROR_OK;
418
419 if (count >= 4)
420 return mem_ap_write_buf_packed_u16(dap, buffer, count, address);
421
422 while (count > 0) {
423 retval = dap_setup_accessport(dap, CSW_16BIT | CSW_ADDRINC_SINGLE, address);
424 if (retval != ERROR_OK)
425 return retval;
426 uint16_t svalue;
427 memcpy(&svalue, buffer, sizeof(uint16_t));
428 uint32_t outvalue = (uint32_t)svalue << 8 * (address & 0x3);
429 retval = dap_queue_ap_write(dap, AP_REG_DRW, outvalue);
430 if (retval != ERROR_OK)
431 break;
432
433 retval = dap_run(dap);
434 if (retval != ERROR_OK)
435 break;
436
437 count -= 2;
438 address += 2;
439 buffer += 2;
440 }
441
442 return retval;
443 }
444
445 static int mem_ap_write_buf_packed_u8(struct adiv5_dap *dap,
446 const uint8_t *buffer, int count, uint32_t address)
447 {
448 int retval = ERROR_OK;
449 int wcount, blocksize, writecount, i;
450
451 wcount = count;
452
453 while (wcount > 0) {
454 int nbytes;
455
456 /* Adjust to write blocks within boundaries aligned to the TAR autoincremnent size*/
457 blocksize = max_tar_block_size(dap->tar_autoincr_block, address);
458
459 if (wcount < blocksize)
460 blocksize = wcount;
461
462 retval = dap_setup_accessport(dap, CSW_8BIT | CSW_ADDRINC_PACKED, address);
463 if (retval != ERROR_OK)
464 return retval;
465 writecount = blocksize;
466
467 do {
468 nbytes = MIN(writecount, 4);
469
470 if (nbytes < 4) {
471 retval = mem_ap_write_buf_u8(dap, buffer, nbytes, address);
472 if (retval != ERROR_OK) {
473 LOG_WARNING("Block write error address "
474 "0x%" PRIx32 ", count 0x%x",
475 address, count);
476 return retval;
477 }
478
479 address += nbytes;
480 } else {
481 uint32_t outvalue;
482 memcpy(&outvalue, buffer, sizeof(uint32_t));
483
484 for (i = 0; i < nbytes; i++) {
485 *((uint8_t *)buffer + (address & 0x3)) = outvalue;
486 outvalue >>= 8;
487 address++;
488 }
489
490 memcpy(&outvalue, buffer, sizeof(uint32_t));
491 retval = dap_queue_ap_write(dap,
492 AP_REG_DRW, outvalue);
493 if (retval != ERROR_OK)
494 break;
495
496 retval = dap_run(dap);
497 if (retval != ERROR_OK) {
498 LOG_WARNING("Block write error address "
499 "0x%" PRIx32 ", count 0x%x",
500 address, count);
501 return retval;
502 }
503 }
504
505 buffer += nbytes;
506 writecount -= nbytes;
507
508 } while (writecount);
509 wcount -= blocksize;
510 }
511
512 return retval;
513 }
514
515 int mem_ap_write_buf_u8(struct adiv5_dap *dap, const uint8_t *buffer, int count, uint32_t address)
516 {
517 int retval = ERROR_OK;
518
519 if (count >= 4)
520 return mem_ap_write_buf_packed_u8(dap, buffer, count, address);
521
522 while (count > 0) {
523 retval = dap_setup_accessport(dap, CSW_8BIT | CSW_ADDRINC_SINGLE, address);
524 if (retval != ERROR_OK)
525 return retval;
526 uint32_t outvalue = (uint32_t)*buffer << 8 * (address & 0x3);
527 retval = dap_queue_ap_write(dap, AP_REG_DRW, outvalue);
528 if (retval != ERROR_OK)
529 break;
530
531 retval = dap_run(dap);
532 if (retval != ERROR_OK)
533 break;
534
535 count--;
536 address++;
537 buffer++;
538 }
539
540 return retval;
541 }
542
543 /**
544 * Synchronously read a block of 32-bit words into a buffer
545 * @param dap The DAP connected to the MEM-AP.
546 * @param buffer where the words will be stored (in host byte order).
547 * @param count How many words to read.
548 * @param address Memory address from which to read words; all the
549 * @param addr_incr if true, increment the source address for each u32
550 * words must be readable by the currently selected MEM-AP.
551 */
552 int mem_ap_read_buf_u32(struct adiv5_dap *dap, uint8_t *buffer,
553 int count, uint32_t address, bool addr_incr)
554 {
555 int wcount, blocksize, readcount, errorcount = 0, retval = ERROR_OK;
556 uint32_t adr = address;
557 uint8_t *pBuffer = buffer;
558 uint32_t incr_flag = CSW_ADDRINC_OFF;
559
560 count >>= 2;
561 wcount = count;
562
563 while (wcount > 0) {
564 /* Adjust to read blocks within boundaries aligned to the
565 * TAR autoincrement size (at least 2^10). Autoincrement
566 * mode avoids an extra per-word roundtrip to update TAR.
567 */
568 blocksize = max_tar_block_size(dap->tar_autoincr_block,
569 address);
570 if (wcount < blocksize)
571 blocksize = wcount;
572
573 /* handle unaligned data at 4k boundary */
574 if (blocksize == 0)
575 blocksize = 1;
576
577 if (addr_incr)
578 incr_flag = CSW_ADDRINC_SINGLE;
579
580 retval = dap_setup_accessport(dap, CSW_32BIT | incr_flag,
581 address);
582 if (retval != ERROR_OK)
583 return retval;
584
585 retval = dap_queue_ap_read_block(dap, AP_REG_DRW, blocksize, buffer);
586
587 retval = dap_run(dap);
588 if (retval != ERROR_OK) {
589 errorcount++;
590 if (errorcount <= 1) {
591 /* try again */
592 continue;
593 }
594 LOG_WARNING("Block read error address 0x%" PRIx32, address);
595 return retval;
596 }
597 wcount = wcount - blocksize;
598 if (addr_incr)
599 address += 4 * blocksize;
600 buffer += 4 * blocksize;
601 }
602
603 /* if we have an unaligned access - reorder data */
604 if (adr & 0x3u) {
605 for (readcount = 0; readcount < count; readcount++) {
606 int i;
607 uint32_t data;
608 memcpy(&data, pBuffer, sizeof(uint32_t));
609
610 for (i = 0; i < 4; i++) {
611 *((uint8_t *)pBuffer) =
612 (data >> 8 * (adr & 0x3));
613 pBuffer++;
614 adr++;
615 }
616 }
617 }
618
619 return retval;
620 }
621
622 static int mem_ap_read_buf_packed_u16(struct adiv5_dap *dap,
623 uint8_t *buffer, int count, uint32_t address)
624 {
625 uint32_t invalue;
626 int retval = ERROR_OK;
627 int wcount, blocksize, readcount, i;
628
629 wcount = count >> 1;
630
631 while (wcount > 0) {
632 int nbytes;
633
634 /* Adjust to read blocks within boundaries aligned to the TAR autoincremnent size*/
635 blocksize = max_tar_block_size(dap->tar_autoincr_block, address);
636 if (wcount < blocksize)
637 blocksize = wcount;
638
639 retval = dap_setup_accessport(dap, CSW_16BIT | CSW_ADDRINC_PACKED, address);
640 if (retval != ERROR_OK)
641 return retval;
642
643 /* handle unaligned data at 4k boundary */
644 if (blocksize == 0)
645 blocksize = 1;
646 readcount = blocksize;
647
648 do {
649 retval = dap_queue_ap_read(dap, AP_REG_DRW, &invalue);
650 if (retval != ERROR_OK)
651 return retval;
652 retval = dap_run(dap);
653 if (retval != ERROR_OK) {
654 LOG_WARNING("Block read error address 0x%" PRIx32 ", count 0x%x", address, count);
655 return retval;
656 }
657
658 nbytes = MIN((readcount << 1), 4);
659
660 for (i = 0; i < nbytes; i++) {
661 *((uint8_t *)buffer) = (invalue >> 8 * (address & 0x3));
662 buffer++;
663 address++;
664 }
665
666 readcount -= (nbytes >> 1);
667 } while (readcount);
668 wcount -= blocksize;
669 }
670
671 return retval;
672 }
673
674 /**
675 * Synchronously read a block of 16-bit halfwords into a buffer
676 * @param dap The DAP connected to the MEM-AP.
677 * @param buffer where the halfwords will be stored (in host byte order).
678 * @param count How many halfwords to read.
679 * @param address Memory address from which to read words; all the
680 * words must be readable by the currently selected MEM-AP.
681 */
682 int mem_ap_read_buf_u16(struct adiv5_dap *dap, uint8_t *buffer,
683 int count, uint32_t address)
684 {
685 uint32_t invalue, i;
686 int retval = ERROR_OK;
687
688 if (count >= 4)
689 return mem_ap_read_buf_packed_u16(dap, buffer, count, address);
690
691 while (count > 0) {
692 retval = dap_setup_accessport(dap, CSW_16BIT | CSW_ADDRINC_SINGLE, address);
693 if (retval != ERROR_OK)
694 return retval;
695 retval = dap_queue_ap_read(dap, AP_REG_DRW, &invalue);
696 if (retval != ERROR_OK)
697 break;
698
699 retval = dap_run(dap);
700 if (retval != ERROR_OK)
701 break;
702
703 if (address & 0x1) {
704 for (i = 0; i < 2; i++) {
705 *((uint8_t *)buffer) = (invalue >> 8 * (address & 0x3));
706 buffer++;
707 address++;
708 }
709 } else {
710 uint16_t svalue = (invalue >> 8 * (address & 0x3));
711 memcpy(buffer, &svalue, sizeof(uint16_t));
712 address += 2;
713 buffer += 2;
714 }
715 count -= 2;
716 }
717
718 return retval;
719 }
720
721 /* FIX!!! is this a potential performance bottleneck w.r.t. requiring too many
722 * roundtrips when jtag_execute_queue() has a large overhead(e.g. for USB)s?
723 *
724 * The solution is to arrange for a large out/in scan in this loop and
725 * and convert data afterwards.
726 */
727 static int mem_ap_read_buf_packed_u8(struct adiv5_dap *dap,
728 uint8_t *buffer, int count, uint32_t address)
729 {
730 uint32_t invalue;
731 int retval = ERROR_OK;
732 int wcount, blocksize, readcount, i;
733
734 wcount = count;
735
736 while (wcount > 0) {
737 int nbytes;
738
739 /* Adjust to read blocks within boundaries aligned to the TAR autoincremnent size*/
740 blocksize = max_tar_block_size(dap->tar_autoincr_block, address);
741
742 if (wcount < blocksize)
743 blocksize = wcount;
744
745 retval = dap_setup_accessport(dap, CSW_8BIT | CSW_ADDRINC_PACKED, address);
746 if (retval != ERROR_OK)
747 return retval;
748 readcount = blocksize;
749
750 do {
751 retval = dap_queue_ap_read(dap, AP_REG_DRW, &invalue);
752 if (retval != ERROR_OK)
753 return retval;
754 retval = dap_run(dap);
755 if (retval != ERROR_OK) {
756 LOG_WARNING("Block read error address 0x%" PRIx32 ", count 0x%x", address, count);
757 return retval;
758 }
759
760 nbytes = MIN(readcount, 4);
761
762 for (i = 0; i < nbytes; i++) {
763 *((uint8_t *)buffer) = (invalue >> 8 * (address & 0x3));
764 buffer++;
765 address++;
766 }
767
768 readcount -= nbytes;
769 } while (readcount);
770 wcount -= blocksize;
771 }
772
773 return retval;
774 }
775
776 /**
777 * Synchronously read a block of bytes into a buffer
778 * @param dap The DAP connected to the MEM-AP.
779 * @param buffer where the bytes will be stored.
780 * @param count How many bytes to read.
781 * @param address Memory address from which to read data; all the
782 * data must be readable by the currently selected MEM-AP.
783 */
784 int mem_ap_read_buf_u8(struct adiv5_dap *dap, uint8_t *buffer,
785 int count, uint32_t address)
786 {
787 uint32_t invalue;
788 int retval = ERROR_OK;
789
790 if (count >= 4)
791 return mem_ap_read_buf_packed_u8(dap, buffer, count, address);
792
793 while (count > 0) {
794 retval = dap_setup_accessport(dap, CSW_8BIT | CSW_ADDRINC_SINGLE, address);
795 if (retval != ERROR_OK)
796 return retval;
797 retval = dap_queue_ap_read(dap, AP_REG_DRW, &invalue);
798 if (retval != ERROR_OK)
799 return retval;
800 retval = dap_run(dap);
801 if (retval != ERROR_OK)
802 break;
803
804 *((uint8_t *)buffer) = (invalue >> 8 * (address & 0x3));
805 count--;
806 address++;
807 buffer++;
808 }
809
810 return retval;
811 }
812
813 /*--------------------------------------------------------------------*/
814 /* Wrapping function with selection of AP */
815 /*--------------------------------------------------------------------*/
816 int mem_ap_sel_read_u32(struct adiv5_dap *swjdp, uint8_t ap,
817 uint32_t address, uint32_t *value)
818 {
819 dap_ap_select(swjdp, ap);
820 return mem_ap_read_u32(swjdp, address, value);
821 }
822
823 int mem_ap_sel_write_u32(struct adiv5_dap *swjdp, uint8_t ap,
824 uint32_t address, uint32_t value)
825 {
826 dap_ap_select(swjdp, ap);
827 return mem_ap_write_u32(swjdp, address, value);
828 }
829
830 int mem_ap_sel_read_atomic_u32(struct adiv5_dap *swjdp, uint8_t ap,
831 uint32_t address, uint32_t *value)
832 {
833 dap_ap_select(swjdp, ap);
834 return mem_ap_read_atomic_u32(swjdp, address, value);
835 }
836
837 int mem_ap_sel_write_atomic_u32(struct adiv5_dap *swjdp, uint8_t ap,
838 uint32_t address, uint32_t value)
839 {
840 dap_ap_select(swjdp, ap);
841 return mem_ap_write_atomic_u32(swjdp, address, value);
842 }
843
844 int mem_ap_sel_read_buf_u8(struct adiv5_dap *swjdp, uint8_t ap,
845 uint8_t *buffer, int count, uint32_t address)
846 {
847 dap_ap_select(swjdp, ap);
848 return mem_ap_read_buf_u8(swjdp, buffer, count, address);
849 }
850
851 int mem_ap_sel_read_buf_u16(struct adiv5_dap *swjdp, uint8_t ap,
852 uint8_t *buffer, int count, uint32_t address)
853 {
854 dap_ap_select(swjdp, ap);
855 return mem_ap_read_buf_u16(swjdp, buffer, count, address);
856 }
857
858 int mem_ap_sel_read_buf_u32_noincr(struct adiv5_dap *swjdp, uint8_t ap,
859 uint8_t *buffer, int count, uint32_t address)
860 {
861 dap_ap_select(swjdp, ap);
862 return mem_ap_read_buf_u32(swjdp, buffer, count, address, false);
863 }
864
865 int mem_ap_sel_read_buf_u32(struct adiv5_dap *swjdp, uint8_t ap,
866 uint8_t *buffer, int count, uint32_t address)
867 {
868 dap_ap_select(swjdp, ap);
869 return mem_ap_read_buf_u32(swjdp, buffer, count, address, true);
870 }
871
872 int mem_ap_sel_write_buf_u8(struct adiv5_dap *swjdp, uint8_t ap,
873 const uint8_t *buffer, int count, uint32_t address)
874 {
875 dap_ap_select(swjdp, ap);
876 return mem_ap_write_buf_u8(swjdp, buffer, count, address);
877 }
878
879 int mem_ap_sel_write_buf_u16(struct adiv5_dap *swjdp, uint8_t ap,
880 const uint8_t *buffer, int count, uint32_t address)
881 {
882 dap_ap_select(swjdp, ap);
883 return mem_ap_write_buf_u16(swjdp, buffer, count, address);
884 }
885
886 int mem_ap_sel_write_buf_u32(struct adiv5_dap *swjdp, uint8_t ap,
887 const uint8_t *buffer, int count, uint32_t address)
888 {
889 dap_ap_select(swjdp, ap);
890 return mem_ap_write_buf_u32(swjdp, buffer, count, address, true);
891 }
892
893 int mem_ap_sel_write_buf_u32_noincr(struct adiv5_dap *swjdp, uint8_t ap,
894 const uint8_t *buffer, int count, uint32_t address)
895 {
896 dap_ap_select(swjdp, ap);
897 return mem_ap_write_buf_u32(swjdp, buffer, count, address, false);
898 }
899
900 #define MDM_REG_STAT 0x00
901 #define MDM_REG_CTRL 0x04
902 #define MDM_REG_ID 0xfc
903
904 #define MDM_STAT_FMEACK (1<<0)
905 #define MDM_STAT_FREADY (1<<1)
906 #define MDM_STAT_SYSSEC (1<<2)
907 #define MDM_STAT_SYSRES (1<<3)
908 #define MDM_STAT_FMEEN (1<<5)
909 #define MDM_STAT_BACKDOOREN (1<<6)
910 #define MDM_STAT_LPEN (1<<7)
911 #define MDM_STAT_VLPEN (1<<8)
912 #define MDM_STAT_LLSMODEXIT (1<<9)
913 #define MDM_STAT_VLLSXMODEXIT (1<<10)
914 #define MDM_STAT_CORE_HALTED (1<<16)
915 #define MDM_STAT_CORE_SLEEPDEEP (1<<17)
916 #define MDM_STAT_CORESLEEPING (1<<18)
917
918 #define MEM_CTRL_FMEIP (1<<0)
919 #define MEM_CTRL_DBG_DIS (1<<1)
920 #define MEM_CTRL_DBG_REQ (1<<2)
921 #define MEM_CTRL_SYS_RES_REQ (1<<3)
922 #define MEM_CTRL_CORE_HOLD_RES (1<<4)
923 #define MEM_CTRL_VLLSX_DBG_REQ (1<<5)
924 #define MEM_CTRL_VLLSX_DBG_ACK (1<<6)
925 #define MEM_CTRL_VLLSX_STAT_ACK (1<<7)
926
927 /**
928 *
929 */
930 int dap_syssec_kinetis_mdmap(struct adiv5_dap *dap)
931 {
932 uint32_t val;
933 int retval;
934 enum reset_types jtag_reset_config = jtag_get_reset_config();
935
936 dap_ap_select(dap, 1);
937
938 /* first check mdm-ap id register */
939 retval = dap_queue_ap_read(dap, MDM_REG_ID, &val);
940 if (retval != ERROR_OK)
941 return retval;
942 dap_run(dap);
943
944 if (val != 0x001C0000) {
945 LOG_DEBUG("id doesn't match %08X != 0x001C0000", val);
946 dap_ap_select(dap, 0);
947 return ERROR_FAIL;
948 }
949
950 /* read and parse status register
951 * it's important that the device is out of
952 * reset here
953 */
954 retval = dap_queue_ap_read(dap, MDM_REG_STAT, &val);
955 if (retval != ERROR_OK)
956 return retval;
957 dap_run(dap);
958
959 LOG_DEBUG("MDM_REG_STAT %08X", val);
960
961 if ((val & (MDM_STAT_SYSSEC|MDM_STAT_FREADY)) != (MDM_STAT_FREADY)) {
962 LOG_DEBUG("MDMAP: system is secured, masserase needed");
963
964 if (!(val & MDM_STAT_FMEEN))
965 LOG_DEBUG("MDMAP: masserase is disabled");
966 else {
967 /* we need to assert reset */
968 if (jtag_reset_config & RESET_HAS_SRST) {
969 /* default to asserting srst */
970 adapter_assert_reset();
971 } else {
972 LOG_DEBUG("SRST not configured");
973 dap_ap_select(dap, 0);
974 return ERROR_FAIL;
975 }
976
977 while (1) {
978 retval = dap_queue_ap_write(dap, MDM_REG_CTRL, MEM_CTRL_FMEIP);
979 if (retval != ERROR_OK)
980 return retval;
981 dap_run(dap);
982 /* read status register and wait for ready */
983 retval = dap_queue_ap_read(dap, MDM_REG_STAT, &val);
984 if (retval != ERROR_OK)
985 return retval;
986 dap_run(dap);
987 LOG_DEBUG("MDM_REG_STAT %08X", val);
988
989 if ((val & 1))
990 break;
991 }
992
993 while (1) {
994 retval = dap_queue_ap_write(dap, MDM_REG_CTRL, 0);
995 if (retval != ERROR_OK)
996 return retval;
997 dap_run(dap);
998 /* read status register */
999 retval = dap_queue_ap_read(dap, MDM_REG_STAT, &val);
1000 if (retval != ERROR_OK)
1001 return retval;
1002 dap_run(dap);
1003 LOG_DEBUG("MDM_REG_STAT %08X", val);
1004 /* read control register and wait for ready */
1005 retval = dap_queue_ap_read(dap, MDM_REG_CTRL, &val);
1006 if (retval != ERROR_OK)
1007 return retval;
1008 dap_run(dap);
1009 LOG_DEBUG("MDM_REG_CTRL %08X", val);
1010
1011 if (val == 0x00)
1012 break;
1013 }
1014 }
1015 }
1016
1017 dap_ap_select(dap, 0);
1018
1019 return ERROR_OK;
1020 }
1021
1022 /** */
1023 struct dap_syssec_filter {
1024 /** */
1025 uint32_t idcode;
1026 /** */
1027 int (*dap_init)(struct adiv5_dap *dap);
1028 };
1029
1030 /** */
1031 static struct dap_syssec_filter dap_syssec_filter_data[] = {
1032 { 0x4BA00477, dap_syssec_kinetis_mdmap }
1033 };
1034
1035 /**
1036 *
1037 */
1038 int dap_syssec(struct adiv5_dap *dap)
1039 {
1040 unsigned int i;
1041 struct jtag_tap *tap;
1042
1043 for (i = 0; i < sizeof(dap_syssec_filter_data); i++) {
1044 tap = dap->jtag_info->tap;
1045
1046 while (tap != NULL) {
1047 if (tap->hasidcode && (dap_syssec_filter_data[i].idcode == tap->idcode)) {
1048 LOG_DEBUG("DAP: mdmap_init for idcode: %08x", tap->idcode);
1049 dap_syssec_filter_data[i].dap_init(dap);
1050 }
1051 tap = tap->next_tap;
1052 }
1053 }
1054
1055 return ERROR_OK;
1056 }
1057
1058 /*--------------------------------------------------------------------------*/
1059
1060
1061 /* FIXME don't import ... just initialize as
1062 * part of DAP transport setup
1063 */
1064 extern const struct dap_ops jtag_dp_ops;
1065
1066 /*--------------------------------------------------------------------------*/
1067
1068 /**
1069 * Initialize a DAP. This sets up the power domains, prepares the DP
1070 * for further use, and arranges to use AP #0 for all AP operations
1071 * until dap_ap-select() changes that policy.
1072 *
1073 * @param dap The DAP being initialized.
1074 *
1075 * @todo Rename this. We also need an initialization scheme which account
1076 * for SWD transports not just JTAG; that will need to address differences
1077 * in layering. (JTAG is useful without any debug target; but not SWD.)
1078 * And this may not even use an AHB-AP ... e.g. DAP-Lite uses an APB-AP.
1079 */
1080 int ahbap_debugport_init(struct adiv5_dap *dap)
1081 {
1082 uint32_t ctrlstat;
1083 int cnt = 0;
1084 int retval;
1085
1086 LOG_DEBUG(" ");
1087
1088 /* JTAG-DP or SWJ-DP, in JTAG mode
1089 * ... for SWD mode this is patched as part
1090 * of link switchover
1091 */
1092 if (!dap->ops)
1093 dap->ops = &jtag_dp_ops;
1094
1095 /* Default MEM-AP setup.
1096 *
1097 * REVISIT AP #0 may be an inappropriate default for this.
1098 * Should we probe, or take a hint from the caller?
1099 * Presumably we can ignore the possibility of multiple APs.
1100 */
1101 dap->ap_current = !0;
1102 dap_ap_select(dap, 0);
1103
1104 /* DP initialization */
1105
1106 retval = dap_queue_dp_read(dap, DP_CTRL_STAT, NULL);
1107 if (retval != ERROR_OK)
1108 return retval;
1109
1110 retval = dap_queue_dp_write(dap, DP_CTRL_STAT, SSTICKYERR);
1111 if (retval != ERROR_OK)
1112 return retval;
1113
1114 retval = dap_queue_dp_read(dap, DP_CTRL_STAT, NULL);
1115 if (retval != ERROR_OK)
1116 return retval;
1117
1118 dap->dp_ctrl_stat = CDBGPWRUPREQ | CSYSPWRUPREQ;
1119 retval = dap_queue_dp_write(dap, DP_CTRL_STAT, dap->dp_ctrl_stat);
1120 if (retval != ERROR_OK)
1121 return retval;
1122
1123 retval = dap_queue_dp_read(dap, DP_CTRL_STAT, &ctrlstat);
1124 if (retval != ERROR_OK)
1125 return retval;
1126 retval = dap_run(dap);
1127 if (retval != ERROR_OK)
1128 return retval;
1129
1130 /* Check that we have debug power domains activated */
1131 while (!(ctrlstat & CDBGPWRUPACK) && (cnt++ < 10)) {
1132 LOG_DEBUG("DAP: wait CDBGPWRUPACK");
1133 retval = dap_queue_dp_read(dap, DP_CTRL_STAT, &ctrlstat);
1134 if (retval != ERROR_OK)
1135 return retval;
1136 retval = dap_run(dap);
1137 if (retval != ERROR_OK)
1138 return retval;
1139 alive_sleep(10);
1140 }
1141
1142 while (!(ctrlstat & CSYSPWRUPACK) && (cnt++ < 10)) {
1143 LOG_DEBUG("DAP: wait CSYSPWRUPACK");
1144 retval = dap_queue_dp_read(dap, DP_CTRL_STAT, &ctrlstat);
1145 if (retval != ERROR_OK)
1146 return retval;
1147 retval = dap_run(dap);
1148 if (retval != ERROR_OK)
1149 return retval;
1150 alive_sleep(10);
1151 }
1152
1153 retval = dap_queue_dp_read(dap, DP_CTRL_STAT, NULL);
1154 if (retval != ERROR_OK)
1155 return retval;
1156 /* With debug power on we can activate OVERRUN checking */
1157 dap->dp_ctrl_stat = CDBGPWRUPREQ | CSYSPWRUPREQ | CORUNDETECT;
1158 retval = dap_queue_dp_write(dap, DP_CTRL_STAT, dap->dp_ctrl_stat);
1159 if (retval != ERROR_OK)
1160 return retval;
1161 retval = dap_queue_dp_read(dap, DP_CTRL_STAT, NULL);
1162 if (retval != ERROR_OK)
1163 return retval;
1164
1165 dap_syssec(dap);
1166
1167 return ERROR_OK;
1168 }
1169
1170 /* CID interpretation -- see ARM IHI 0029B section 3
1171 * and ARM IHI 0031A table 13-3.
1172 */
1173 static const char *class_description[16] = {
1174 "Reserved", "ROM table", "Reserved", "Reserved",
1175 "Reserved", "Reserved", "Reserved", "Reserved",
1176 "Reserved", "CoreSight component", "Reserved", "Peripheral Test Block",
1177 "Reserved", "OptimoDE DESS",
1178 "Generic IP component", "PrimeCell or System component"
1179 };
1180
1181 static bool is_dap_cid_ok(uint32_t cid3, uint32_t cid2, uint32_t cid1, uint32_t cid0)
1182 {
1183 return cid3 == 0xb1 && cid2 == 0x05
1184 && ((cid1 & 0x0f) == 0) && cid0 == 0x0d;
1185 }
1186
1187 /*
1188 * This function checks the ID for each access port to find the requested Access Port type
1189 */
1190 int dap_find_ap(struct adiv5_dap *dap, enum ap_type type_to_find, uint8_t *ap_num_out)
1191 {
1192 int ap;
1193
1194 /* Maximum AP number is 255 since the SELECT register is 8 bits */
1195 for (ap = 0; ap <= 255; ap++) {
1196
1197 /* read the IDR register of the Access Port */
1198 uint32_t id_val = 0;
1199 dap_ap_select(dap, ap);
1200
1201 int retval = dap_queue_ap_read(dap, AP_REG_IDR, &id_val);
1202 if (retval != ERROR_OK)
1203 return retval;
1204
1205 retval = dap_run(dap);
1206
1207 /* IDR bits:
1208 * 31-28 : Revision
1209 * 27-24 : JEDEC bank (0x4 for ARM)
1210 * 23-17 : JEDEC code (0x3B for ARM)
1211 * 16 : Mem-AP
1212 * 15-8 : Reserved
1213 * 7-0 : AP Identity (1=AHB-AP 2=APB-AP 0x10=JTAG-AP)
1214 */
1215
1216 /* Reading register for a non-existant AP should not cause an error,
1217 * but just to be sure, try to continue searching if an error does happen.
1218 */
1219 if ((retval == ERROR_OK) && /* Register read success */
1220 ((id_val & 0x0FFF0000) == 0x04770000) && /* Jedec codes match */
1221 ((id_val & 0xFF) == type_to_find)) { /* type matches*/
1222
1223 LOG_DEBUG("Found %s at AP index: %d (IDR=0x%08X)",
1224 (type_to_find == AP_TYPE_AHB_AP) ? "AHB-AP" :
1225 (type_to_find == AP_TYPE_APB_AP) ? "APB-AP" :
1226 (type_to_find == AP_TYPE_JTAG_AP) ? "JTAG-AP" : "Unknown",
1227 ap, id_val);
1228
1229 *ap_num_out = ap;
1230 return ERROR_OK;
1231 }
1232 }
1233
1234 LOG_DEBUG("No %s found",
1235 (type_to_find == AP_TYPE_AHB_AP) ? "AHB-AP" :
1236 (type_to_find == AP_TYPE_APB_AP) ? "APB-AP" :
1237 (type_to_find == AP_TYPE_JTAG_AP) ? "JTAG-AP" : "Unknown");
1238 return ERROR_FAIL;
1239 }
1240
1241 int dap_get_debugbase(struct adiv5_dap *dap, int ap,
1242 uint32_t *out_dbgbase, uint32_t *out_apid)
1243 {
1244 uint32_t ap_old;
1245 int retval;
1246 uint32_t dbgbase, apid;
1247
1248 /* AP address is in bits 31:24 of DP_SELECT */
1249 if (ap >= 256)
1250 return ERROR_COMMAND_SYNTAX_ERROR;
1251
1252 ap_old = dap->ap_current;
1253 dap_ap_select(dap, ap);
1254
1255 retval = dap_queue_ap_read(dap, AP_REG_BASE, &dbgbase);
1256 if (retval != ERROR_OK)
1257 return retval;
1258 retval = dap_queue_ap_read(dap, AP_REG_IDR, &apid);
1259 if (retval != ERROR_OK)
1260 return retval;
1261 retval = dap_run(dap);
1262 if (retval != ERROR_OK)
1263 return retval;
1264
1265 /* Excavate the device ID code */
1266 struct jtag_tap *tap = dap->jtag_info->tap;
1267 while (tap != NULL) {
1268 if (tap->hasidcode)
1269 break;
1270 tap = tap->next_tap;
1271 }
1272 if (tap == NULL || !tap->hasidcode)
1273 return ERROR_OK;
1274
1275 dap_ap_select(dap, ap_old);
1276
1277 /* The asignment happens only here to prevent modification of these
1278 * values before they are certain. */
1279 *out_dbgbase = dbgbase;
1280 *out_apid = apid;
1281
1282 return ERROR_OK;
1283 }
1284
1285 int dap_lookup_cs_component(struct adiv5_dap *dap, int ap,
1286 uint32_t dbgbase, uint8_t type, uint32_t *addr)
1287 {
1288 uint32_t ap_old;
1289 uint32_t romentry, entry_offset = 0, component_base, devtype;
1290 int retval = ERROR_FAIL;
1291
1292 if (ap >= 256)
1293 return ERROR_COMMAND_SYNTAX_ERROR;
1294
1295 ap_old = dap->ap_current;
1296 dap_ap_select(dap, ap);
1297
1298 do {
1299 retval = mem_ap_read_atomic_u32(dap, (dbgbase&0xFFFFF000) |
1300 entry_offset, &romentry);
1301 if (retval != ERROR_OK)
1302 return retval;
1303
1304 component_base = (dbgbase & 0xFFFFF000)
1305 + (romentry & 0xFFFFF000);
1306
1307 if (romentry & 0x1) {
1308 retval = mem_ap_read_atomic_u32(dap,
1309 (component_base & 0xfffff000) | 0xfcc,
1310 &devtype);
1311 if (retval != ERROR_OK)
1312 return retval;
1313 if ((devtype & 0xff) == type) {
1314 *addr = component_base;
1315 retval = ERROR_OK;
1316 break;
1317 }
1318 }
1319 entry_offset += 4;
1320 } while (romentry > 0);
1321
1322 dap_ap_select(dap, ap_old);
1323
1324 return retval;
1325 }
1326
1327 static int dap_info_command(struct command_context *cmd_ctx,
1328 struct adiv5_dap *dap, int ap)
1329 {
1330 int retval;
1331 uint32_t dbgbase = 0, apid = 0; /* Silence gcc by initializing */
1332 int romtable_present = 0;
1333 uint8_t mem_ap;
1334 uint32_t ap_old;
1335
1336 retval = dap_get_debugbase(dap, ap, &dbgbase, &apid);
1337 if (retval != ERROR_OK)
1338 return retval;
1339
1340 ap_old = dap->ap_current;
1341 dap_ap_select(dap, ap);
1342
1343 /* Now we read ROM table ID registers, ref. ARM IHI 0029B sec */
1344 mem_ap = ((apid&0x10000) && ((apid&0x0F) != 0));
1345 command_print(cmd_ctx, "AP ID register 0x%8.8" PRIx32, apid);
1346 if (apid) {
1347 switch (apid&0x0F) {
1348 case 0:
1349 command_print(cmd_ctx, "\tType is JTAG-AP");
1350 break;
1351 case 1:
1352 command_print(cmd_ctx, "\tType is MEM-AP AHB");
1353 break;
1354 case 2:
1355 command_print(cmd_ctx, "\tType is MEM-AP APB");
1356 break;
1357 default:
1358 command_print(cmd_ctx, "\tUnknown AP type");
1359 break;
1360 }
1361
1362 /* NOTE: a MEM-AP may have a single CoreSight component that's
1363 * not a ROM table ... or have no such components at all.
1364 */
1365 if (mem_ap)
1366 command_print(cmd_ctx, "AP BASE 0x%8.8" PRIx32, dbgbase);
1367 } else
1368 command_print(cmd_ctx, "No AP found at this ap 0x%x", ap);
1369
1370 romtable_present = ((mem_ap) && (dbgbase != 0xFFFFFFFF));
1371 if (romtable_present) {
1372 uint32_t cid0, cid1, cid2, cid3, memtype, romentry;
1373 uint16_t entry_offset;
1374
1375 /* bit 16 of apid indicates a memory access port */
1376 if (dbgbase & 0x02)
1377 command_print(cmd_ctx, "\tValid ROM table present");
1378 else
1379 command_print(cmd_ctx, "\tROM table in legacy format");
1380
1381 /* Now we read ROM table ID registers, ref. ARM IHI 0029B sec */
1382 retval = mem_ap_read_u32(dap, (dbgbase&0xFFFFF000) | 0xFF0, &cid0);
1383 if (retval != ERROR_OK)
1384 return retval;
1385 retval = mem_ap_read_u32(dap, (dbgbase&0xFFFFF000) | 0xFF4, &cid1);
1386 if (retval != ERROR_OK)
1387 return retval;
1388 retval = mem_ap_read_u32(dap, (dbgbase&0xFFFFF000) | 0xFF8, &cid2);
1389 if (retval != ERROR_OK)
1390 return retval;
1391 retval = mem_ap_read_u32(dap, (dbgbase&0xFFFFF000) | 0xFFC, &cid3);
1392 if (retval != ERROR_OK)
1393 return retval;
1394 retval = mem_ap_read_u32(dap, (dbgbase&0xFFFFF000) | 0xFCC, &memtype);
1395 if (retval != ERROR_OK)
1396 return retval;
1397 retval = dap_run(dap);
1398 if (retval != ERROR_OK)
1399 return retval;
1400
1401 if (!is_dap_cid_ok(cid3, cid2, cid1, cid0))
1402 command_print(cmd_ctx, "\tCID3 0x%2.2x"
1403 ", CID2 0x%2.2x"
1404 ", CID1 0x%2.2x"
1405 ", CID0 0x%2.2x",
1406 (unsigned) cid3, (unsigned)cid2,
1407 (unsigned) cid1, (unsigned) cid0);
1408 if (memtype & 0x01)
1409 command_print(cmd_ctx, "\tMEMTYPE system memory present on bus");
1410 else
1411 command_print(cmd_ctx, "\tMEMTYPE System memory not present. "
1412 "Dedicated debug bus.");
1413
1414 /* Now we read ROM table entries from dbgbase&0xFFFFF000) | 0x000 until we get 0x00000000 */
1415 entry_offset = 0;
1416 do {
1417 retval = mem_ap_read_atomic_u32(dap, (dbgbase&0xFFFFF000) | entry_offset, &romentry);
1418 if (retval != ERROR_OK)
1419 return retval;
1420 command_print(cmd_ctx, "\tROMTABLE[0x%x] = 0x%" PRIx32 "", entry_offset, romentry);
1421 if (romentry & 0x01) {
1422 uint32_t c_cid0, c_cid1, c_cid2, c_cid3;
1423 uint32_t c_pid0, c_pid1, c_pid2, c_pid3, c_pid4;
1424 uint32_t component_base;
1425 unsigned part_num;
1426 char *type, *full;
1427
1428 component_base = (dbgbase & 0xFFFFF000) + (romentry & 0xFFFFF000);
1429
1430 /* IDs are in last 4K section */
1431 retval = mem_ap_read_atomic_u32(dap, component_base + 0xFE0, &c_pid0);
1432 if (retval != ERROR_OK)
1433 return retval;
1434 c_pid0 &= 0xff;
1435 retval = mem_ap_read_atomic_u32(dap, component_base + 0xFE4, &c_pid1);
1436 if (retval != ERROR_OK)
1437 return retval;
1438 c_pid1 &= 0xff;
1439 retval = mem_ap_read_atomic_u32(dap, component_base + 0xFE8, &c_pid2);
1440 if (retval != ERROR_OK)
1441 return retval;
1442 c_pid2 &= 0xff;
1443 retval = mem_ap_read_atomic_u32(dap, component_base + 0xFEC, &c_pid3);
1444 if (retval != ERROR_OK)
1445 return retval;
1446 c_pid3 &= 0xff;
1447 retval = mem_ap_read_atomic_u32(dap, component_base + 0xFD0, &c_pid4);
1448 if (retval != ERROR_OK)
1449 return retval;
1450 c_pid4 &= 0xff;
1451
1452 retval = mem_ap_read_atomic_u32(dap, component_base + 0xFF0, &c_cid0);
1453 if (retval != ERROR_OK)
1454 return retval;
1455 c_cid0 &= 0xff;
1456 retval = mem_ap_read_atomic_u32(dap, component_base + 0xFF4, &c_cid1);
1457 if (retval != ERROR_OK)
1458 return retval;
1459 c_cid1 &= 0xff;
1460 retval = mem_ap_read_atomic_u32(dap, component_base + 0xFF8, &c_cid2);
1461 if (retval != ERROR_OK)
1462 return retval;
1463 c_cid2 &= 0xff;
1464 retval = mem_ap_read_atomic_u32(dap, component_base + 0xFFC, &c_cid3);
1465 if (retval != ERROR_OK)
1466 return retval;
1467 c_cid3 &= 0xff;
1468
1469 command_print(cmd_ctx, "\t\tComponent base address 0x%" PRIx32 ","
1470 "start address 0x%" PRIx32, component_base,
1471 /* component may take multiple 4K pages */
1472 component_base - 0x1000*(c_pid4 >> 4));
1473 command_print(cmd_ctx, "\t\tComponent class is 0x%x, %s",
1474 (int) (c_cid1 >> 4) & 0xf,
1475 /* See ARM IHI 0029B Table 3-3 */
1476 class_description[(c_cid1 >> 4) & 0xf]);
1477
1478 /* CoreSight component? */
1479 if (((c_cid1 >> 4) & 0x0f) == 9) {
1480 uint32_t devtype;
1481 unsigned minor;
1482 char *major = "Reserved", *subtype = "Reserved";
1483
1484 retval = mem_ap_read_atomic_u32(dap,
1485 (component_base & 0xfffff000) | 0xfcc,
1486 &devtype);
1487 if (retval != ERROR_OK)
1488 return retval;
1489 minor = (devtype >> 4) & 0x0f;
1490 switch (devtype & 0x0f) {
1491 case 0:
1492 major = "Miscellaneous";
1493 switch (minor) {
1494 case 0:
1495 subtype = "other";
1496 break;
1497 case 4:
1498 subtype = "Validation component";
1499 break;
1500 }
1501 break;
1502 case 1:
1503 major = "Trace Sink";
1504 switch (minor) {
1505 case 0:
1506 subtype = "other";
1507 break;
1508 case 1:
1509 subtype = "Port";
1510 break;
1511 case 2:
1512 subtype = "Buffer";
1513 break;
1514 }
1515 break;
1516 case 2:
1517 major = "Trace Link";
1518 switch (minor) {
1519 case 0:
1520 subtype = "other";
1521 break;
1522 case 1:
1523 subtype = "Funnel, router";
1524 break;
1525 case 2:
1526 subtype = "Filter";
1527 break;
1528 case 3:
1529 subtype = "FIFO, buffer";
1530 break;
1531 }
1532 break;
1533 case 3:
1534 major = "Trace Source";
1535 switch (minor) {
1536 case 0:
1537 subtype = "other";
1538 break;
1539 case 1:
1540 subtype = "Processor";
1541 break;
1542 case 2:
1543 subtype = "DSP";
1544 break;
1545 case 3:
1546 subtype = "Engine/Coprocessor";
1547 break;
1548 case 4:
1549 subtype = "Bus";
1550 break;
1551 }
1552 break;
1553 case 4:
1554 major = "Debug Control";
1555 switch (minor) {
1556 case 0:
1557 subtype = "other";
1558 break;
1559 case 1:
1560 subtype = "Trigger Matrix";
1561 break;
1562 case 2:
1563 subtype = "Debug Auth";
1564 break;
1565 }
1566 break;
1567 case 5:
1568 major = "Debug Logic";
1569 switch (minor) {
1570 case 0:
1571 subtype = "other";
1572 break;
1573 case 1:
1574 subtype = "Processor";
1575 break;
1576 case 2:
1577 subtype = "DSP";
1578 break;
1579 case 3:
1580 subtype = "Engine/Coprocessor";
1581 break;
1582 }
1583 break;
1584 }
1585 command_print(cmd_ctx, "\t\tType is 0x%2.2x, %s, %s",
1586 (unsigned) (devtype & 0xff),
1587 major, subtype);
1588 /* REVISIT also show 0xfc8 DevId */
1589 }
1590
1591 if (!is_dap_cid_ok(cid3, cid2, cid1, cid0))
1592 command_print(cmd_ctx,
1593 "\t\tCID3 0%2.2x"
1594 ", CID2 0%2.2x"
1595 ", CID1 0%2.2x"
1596 ", CID0 0%2.2x",
1597 (int) c_cid3,
1598 (int) c_cid2,
1599 (int)c_cid1,
1600 (int)c_cid0);
1601 command_print(cmd_ctx,
1602 "\t\tPeripheral ID[4..0] = hex "
1603 "%2.2x %2.2x %2.2x %2.2x %2.2x",
1604 (int) c_pid4, (int) c_pid3, (int) c_pid2,
1605 (int) c_pid1, (int) c_pid0);
1606
1607 /* Part number interpretations are from Cortex
1608 * core specs, the CoreSight components TRM
1609 * (ARM DDI 0314H), CoreSight System Design
1610 * Guide (ARM DGI 0012D) and ETM specs; also
1611 * from chip observation (e.g. TI SDTI).
1612 */
1613 part_num = (c_pid0 & 0xff);
1614 part_num |= (c_pid1 & 0x0f) << 8;
1615 switch (part_num) {
1616 case 0x000:
1617 type = "Cortex-M3 NVIC";
1618 full = "(Interrupt Controller)";
1619 break;
1620 case 0x001:
1621 type = "Cortex-M3 ITM";
1622 full = "(Instrumentation Trace Module)";
1623 break;
1624 case 0x002:
1625 type = "Cortex-M3 DWT";
1626 full = "(Data Watchpoint and Trace)";
1627 break;
1628 case 0x003:
1629 type = "Cortex-M3 FBP";
1630 full = "(Flash Patch and Breakpoint)";
1631 break;
1632 case 0x00c:
1633 type = "Cortex-M4 SCS";
1634 full = "(System Control Space)";
1635 break;
1636 case 0x00d:
1637 type = "CoreSight ETM11";
1638 full = "(Embedded Trace)";
1639 break;
1640 /* case 0x113: what? */
1641 case 0x120: /* from OMAP3 memmap */
1642 type = "TI SDTI";
1643 full = "(System Debug Trace Interface)";
1644 break;
1645 case 0x343: /* from OMAP3 memmap */
1646 type = "TI DAPCTL";
1647 full = "";
1648 break;
1649 case 0x906:
1650 type = "Coresight CTI";
1651 full = "(Cross Trigger)";
1652 break;
1653 case 0x907:
1654 type = "Coresight ETB";
1655 full = "(Trace Buffer)";
1656 break;
1657 case 0x908:
1658 type = "Coresight CSTF";
1659 full = "(Trace Funnel)";
1660 break;
1661 case 0x910:
1662 type = "CoreSight ETM9";
1663 full = "(Embedded Trace)";
1664 break;
1665 case 0x912:
1666 type = "Coresight TPIU";
1667 full = "(Trace Port Interface Unit)";
1668 break;
1669 case 0x921:
1670 type = "Cortex-A8 ETM";
1671 full = "(Embedded Trace)";
1672 break;
1673 case 0x922:
1674 type = "Cortex-A8 CTI";
1675 full = "(Cross Trigger)";
1676 break;
1677 case 0x923:
1678 type = "Cortex-M3 TPIU";
1679 full = "(Trace Port Interface Unit)";
1680 break;
1681 case 0x924:
1682 type = "Cortex-M3 ETM";
1683 full = "(Embedded Trace)";
1684 break;
1685 case 0x925:
1686 type = "Cortex-M4 ETM";
1687 full = "(Embedded Trace)";
1688 break;
1689 case 0x930:
1690 type = "Cortex-R4 ETM";
1691 full = "(Embedded Trace)";
1692 break;
1693 case 0x9a1:
1694 type = "Cortex-M4 TPUI";
1695 full = "(Trace Port Interface Unit)";
1696 break;
1697 case 0xc08:
1698 type = "Cortex-A8 Debug";
1699 full = "(Debug Unit)";
1700 break;
1701 default:
1702 type = "-*- unrecognized -*-";
1703 full = "";
1704 break;
1705 }
1706 command_print(cmd_ctx, "\t\tPart is %s %s",
1707 type, full);
1708 } else {
1709 if (romentry)
1710 command_print(cmd_ctx, "\t\tComponent not present");
1711 else
1712 command_print(cmd_ctx, "\t\tEnd of ROM table");
1713 }
1714 entry_offset += 4;
1715 } while (romentry > 0);
1716 } else
1717 command_print(cmd_ctx, "\tNo ROM table present");
1718 dap_ap_select(dap, ap_old);
1719
1720 return ERROR_OK;
1721 }
1722
1723 COMMAND_HANDLER(handle_dap_info_command)
1724 {
1725 struct target *target = get_current_target(CMD_CTX);
1726 struct arm *arm = target_to_arm(target);
1727 struct adiv5_dap *dap = arm->dap;
1728 uint32_t apsel;
1729
1730 switch (CMD_ARGC) {
1731 case 0:
1732 apsel = dap->apsel;
1733 break;
1734 case 1:
1735 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], apsel);
1736 break;
1737 default:
1738 return ERROR_COMMAND_SYNTAX_ERROR;
1739 }
1740
1741 return dap_info_command(CMD_CTX, dap, apsel);
1742 }
1743
1744 COMMAND_HANDLER(dap_baseaddr_command)
1745 {
1746 struct target *target = get_current_target(CMD_CTX);
1747 struct arm *arm = target_to_arm(target);
1748 struct adiv5_dap *dap = arm->dap;
1749
1750 uint32_t apsel, baseaddr;
1751 int retval;
1752
1753 switch (CMD_ARGC) {
1754 case 0:
1755 apsel = dap->apsel;
1756 break;
1757 case 1:
1758 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], apsel);
1759 /* AP address is in bits 31:24 of DP_SELECT */
1760 if (apsel >= 256)
1761 return ERROR_COMMAND_SYNTAX_ERROR;
1762 break;
1763 default:
1764 return ERROR_COMMAND_SYNTAX_ERROR;
1765 }
1766
1767 dap_ap_select(dap, apsel);
1768
1769 /* NOTE: assumes we're talking to a MEM-AP, which
1770 * has a base address. There are other kinds of AP,
1771 * though they're not common for now. This should
1772 * use the ID register to verify it's a MEM-AP.
1773 */
1774 retval = dap_queue_ap_read(dap, AP_REG_BASE, &baseaddr);
1775 if (retval != ERROR_OK)
1776 return retval;
1777 retval = dap_run(dap);
1778 if (retval != ERROR_OK)
1779 return retval;
1780
1781 command_print(CMD_CTX, "0x%8.8" PRIx32, baseaddr);
1782
1783 return retval;
1784 }
1785
1786 COMMAND_HANDLER(dap_memaccess_command)
1787 {
1788 struct target *target = get_current_target(CMD_CTX);
1789 struct arm *arm = target_to_arm(target);
1790 struct adiv5_dap *dap = arm->dap;
1791
1792 uint32_t memaccess_tck;
1793
1794 switch (CMD_ARGC) {
1795 case 0:
1796 memaccess_tck = dap->memaccess_tck;
1797 break;
1798 case 1:
1799 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], memaccess_tck);
1800 break;
1801 default:
1802 return ERROR_COMMAND_SYNTAX_ERROR;
1803 }
1804 dap->memaccess_tck = memaccess_tck;
1805
1806 command_print(CMD_CTX, "memory bus access delay set to %" PRIi32 " tck",
1807 dap->memaccess_tck);
1808
1809 return ERROR_OK;
1810 }
1811
1812 COMMAND_HANDLER(dap_apsel_command)
1813 {
1814 struct target *target = get_current_target(CMD_CTX);
1815 struct arm *arm = target_to_arm(target);
1816 struct adiv5_dap *dap = arm->dap;
1817
1818 uint32_t apsel, apid;
1819 int retval;
1820
1821 switch (CMD_ARGC) {
1822 case 0:
1823 apsel = 0;
1824 break;
1825 case 1:
1826 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], apsel);
1827 /* AP address is in bits 31:24 of DP_SELECT */
1828 if (apsel >= 256)
1829 return ERROR_COMMAND_SYNTAX_ERROR;
1830 break;
1831 default:
1832 return ERROR_COMMAND_SYNTAX_ERROR;
1833 }
1834
1835 dap->apsel = apsel;
1836 dap_ap_select(dap, apsel);
1837
1838 retval = dap_queue_ap_read(dap, AP_REG_IDR, &apid);
1839 if (retval != ERROR_OK)
1840 return retval;
1841 retval = dap_run(dap);
1842 if (retval != ERROR_OK)
1843 return retval;
1844
1845 command_print(CMD_CTX, "ap %" PRIi32 " selected, identification register 0x%8.8" PRIx32,
1846 apsel, apid);
1847
1848 return retval;
1849 }
1850
1851 COMMAND_HANDLER(dap_apcsw_command)
1852 {
1853 struct target *target = get_current_target(CMD_CTX);
1854 struct arm *arm = target_to_arm(target);
1855 struct adiv5_dap *dap = arm->dap;
1856
1857 uint32_t apcsw = dap->apcsw[dap->apsel], sprot = 0;
1858
1859 switch (CMD_ARGC) {
1860 case 0:
1861 command_print(CMD_CTX, "apsel %" PRIi32 " selected, csw 0x%8.8" PRIx32,
1862 (dap->apsel), apcsw);
1863 break;
1864 case 1:
1865 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], sprot);
1866 /* AP address is in bits 31:24 of DP_SELECT */
1867 if (sprot > 1)
1868 return ERROR_COMMAND_SYNTAX_ERROR;
1869 if (sprot)
1870 apcsw |= CSW_SPROT;
1871 else
1872 apcsw &= ~CSW_SPROT;
1873 break;
1874 default:
1875 return ERROR_COMMAND_SYNTAX_ERROR;
1876 }
1877 dap->apcsw[dap->apsel] = apcsw;
1878
1879 return 0;
1880 }
1881
1882
1883
1884 COMMAND_HANDLER(dap_apid_command)
1885 {
1886 struct target *target = get_current_target(CMD_CTX);
1887 struct arm *arm = target_to_arm(target);
1888 struct adiv5_dap *dap = arm->dap;
1889
1890 uint32_t apsel, apid;
1891 int retval;
1892
1893 switch (CMD_ARGC) {
1894 case 0:
1895 apsel = dap->apsel;
1896 break;
1897 case 1:
1898 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], apsel);
1899 /* AP address is in bits 31:24 of DP_SELECT */
1900 if (apsel >= 256)
1901 return ERROR_COMMAND_SYNTAX_ERROR;
1902 break;
1903 default:
1904 return ERROR_COMMAND_SYNTAX_ERROR;
1905 }
1906
1907 dap_ap_select(dap, apsel);
1908
1909 retval = dap_queue_ap_read(dap, AP_REG_IDR, &apid);
1910 if (retval != ERROR_OK)
1911 return retval;
1912 retval = dap_run(dap);
1913 if (retval != ERROR_OK)
1914 return retval;
1915
1916 command_print(CMD_CTX, "0x%8.8" PRIx32, apid);
1917
1918 return retval;
1919 }
1920
1921 static const struct command_registration dap_commands[] = {
1922 {
1923 .name = "info",
1924 .handler = handle_dap_info_command,
1925 .mode = COMMAND_EXEC,
1926 .help = "display ROM table for MEM-AP "
1927 "(default currently selected AP)",
1928 .usage = "[ap_num]",
1929 },
1930 {
1931 .name = "apsel",
1932 .handler = dap_apsel_command,
1933 .mode = COMMAND_EXEC,
1934 .help = "Set the currently selected AP (default 0) "
1935 "and display the result",
1936 .usage = "[ap_num]",
1937 },
1938 {
1939 .name = "apcsw",
1940 .handler = dap_apcsw_command,
1941 .mode = COMMAND_EXEC,
1942 .help = "Set csw access bit ",
1943 .usage = "[sprot]",
1944 },
1945
1946 {
1947 .name = "apid",
1948 .handler = dap_apid_command,
1949 .mode = COMMAND_EXEC,
1950 .help = "return ID register from AP "
1951 "(default currently selected AP)",
1952 .usage = "[ap_num]",
1953 },
1954 {
1955 .name = "baseaddr",
1956 .handler = dap_baseaddr_command,
1957 .mode = COMMAND_EXEC,
1958 .help = "return debug base address from MEM-AP "
1959 "(default currently selected AP)",
1960 .usage = "[ap_num]",
1961 },
1962 {
1963 .name = "memaccess",
1964 .handler = dap_memaccess_command,
1965 .mode = COMMAND_EXEC,
1966 .help = "set/get number of extra tck for MEM-AP memory "
1967 "bus access [0-255]",
1968 .usage = "[cycles]",
1969 },
1970 COMMAND_REGISTRATION_DONE
1971 };
1972
1973 const struct command_registration dap_command_handlers[] = {
1974 {
1975 .name = "dap",
1976 .mode = COMMAND_EXEC,
1977 .help = "DAP command group",
1978 .usage = "",
1979 .chain = dap_commands,
1980 },
1981 COMMAND_REGISTRATION_DONE
1982 };
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