070256fc9902686fef8012dc303eb1b5423d5265
[openocd.git] / src / target / hla_target.c
1 /***************************************************************************
2 * Copyright (C) 2011 by Mathias Kuester *
3 * Mathias Kuester <kesmtp@freenet.de> *
4 * *
5 * Copyright (C) 2011 by Spencer Oliver *
6 * spen@spen-soft.co.uk *
7 * *
8 * This program is free software; you can redistribute it and/or modify *
9 * it under the terms of the GNU General Public License as published by *
10 * the Free Software Foundation; either version 2 of the License, or *
11 * (at your option) any later version. *
12 * *
13 * This program is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License for more details. *
17 * *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program; if not, write to the *
20 * Free Software Foundation, Inc., *
21 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
22 ***************************************************************************/
23
24 #ifdef HAVE_CONFIG_H
25 #include "config.h"
26 #endif
27
28 #include "jtag/jtag.h"
29 #include "jtag/hla/hla_transport.h"
30 #include "jtag/hla/hla_interface.h"
31 #include "jtag/hla/hla_layout.h"
32 #include "register.h"
33 #include "algorithm.h"
34 #include "target.h"
35 #include "breakpoints.h"
36 #include "target_type.h"
37 #include "armv7m.h"
38 #include "cortex_m.h"
39 #include "arm_semihosting.h"
40
41 #define ARMV7M_SCS_DCRSR 0xe000edf4
42 #define ARMV7M_SCS_DCRDR 0xe000edf8
43
44 static inline struct hl_interface_s *target_to_adapter(struct target *target)
45 {
46 return target->tap->priv;
47 }
48
49 static int adapter_load_core_reg_u32(struct target *target,
50 uint32_t num, uint32_t *value)
51 {
52 int retval;
53 struct hl_interface_s *adapter = target_to_adapter(target);
54
55 LOG_DEBUG("%s", __func__);
56
57 /* NOTE: we "know" here that the register identifiers used
58 * in the v7m header match the Cortex-M3 Debug Core Register
59 * Selector values for R0..R15, xPSR, MSP, and PSP.
60 */
61 switch (num) {
62 case 0 ... 18:
63 /* read a normal core register */
64 retval = adapter->layout->api->read_reg(adapter->fd, num, value);
65
66 if (retval != ERROR_OK) {
67 LOG_ERROR("JTAG failure %i", retval);
68 return ERROR_JTAG_DEVICE_ERROR;
69 }
70 LOG_DEBUG("load from core reg %i value 0x%" PRIx32 "", (int)num, *value);
71 break;
72
73 case ARMV7M_FPSID:
74 case ARMV7M_FPEXC:
75 *value = 0;
76 break;
77
78 case ARMV7M_FPSCR:
79 /* Floating-point Status and Registers */
80 retval = target_write_u32(target, ARMV7M_SCS_DCRSR, 33);
81 if (retval != ERROR_OK)
82 return retval;
83 retval = target_read_u32(target, ARMV7M_SCS_DCRDR, value);
84 if (retval != ERROR_OK)
85 return retval;
86 LOG_DEBUG("load from core reg %i value 0x%" PRIx32 "", (int)num, *value);
87 break;
88
89 case ARMV7M_S0 ... ARMV7M_S31:
90 /* Floating-point Status and Registers */
91 retval = target_write_u32(target, ARMV7M_SCS_DCRSR, num-ARMV7M_S0+64);
92 if (retval != ERROR_OK)
93 return retval;
94 retval = target_read_u32(target, ARMV7M_SCS_DCRDR, value);
95 if (retval != ERROR_OK)
96 return retval;
97 LOG_DEBUG("load from core reg %i value 0x%" PRIx32 "", (int)num, *value);
98 break;
99
100 case ARMV7M_D0 ... ARMV7M_D15:
101 value = 0;
102 break;
103
104 case ARMV7M_PRIMASK:
105 case ARMV7M_BASEPRI:
106 case ARMV7M_FAULTMASK:
107 case ARMV7M_CONTROL:
108 /* Cortex-M3 packages these four registers as bitfields
109 * in one Debug Core register. So say r0 and r2 docs;
110 * it was removed from r1 docs, but still works.
111 */
112 retval = adapter->layout->api->read_reg(adapter->fd, 20, value);
113 if (retval != ERROR_OK)
114 return retval;
115
116 switch (num) {
117 case ARMV7M_PRIMASK:
118 *value = buf_get_u32((uint8_t *) value, 0, 1);
119 break;
120
121 case ARMV7M_BASEPRI:
122 *value = buf_get_u32((uint8_t *) value, 8, 8);
123 break;
124
125 case ARMV7M_FAULTMASK:
126 *value = buf_get_u32((uint8_t *) value, 16, 1);
127 break;
128
129 case ARMV7M_CONTROL:
130 *value = buf_get_u32((uint8_t *) value, 24, 2);
131 break;
132 }
133
134 LOG_DEBUG("load from special reg %i value 0x%" PRIx32 "",
135 (int)num, *value);
136 break;
137
138 default:
139 return ERROR_COMMAND_SYNTAX_ERROR;
140 }
141
142 return ERROR_OK;
143 }
144
145 static int adapter_store_core_reg_u32(struct target *target,
146 uint32_t num, uint32_t value)
147 {
148 int retval;
149 uint32_t reg;
150 struct armv7m_common *armv7m = target_to_armv7m(target);
151 struct hl_interface_s *adapter = target_to_adapter(target);
152
153 LOG_DEBUG("%s", __func__);
154
155 #ifdef ARMV7_GDB_HACKS
156 /* If the LR register is being modified, make sure it will put us
157 * in "thumb" mode, or an INVSTATE exception will occur. This is a
158 * hack to deal with the fact that gdb will sometimes "forge"
159 * return addresses, and doesn't set the LSB correctly (i.e., when
160 * printing expressions containing function calls, it sets LR = 0.)
161 * Valid exception return codes have bit 0 set too.
162 */
163 if (num == ARMV7M_R14)
164 value |= 0x01;
165 #endif
166
167 /* NOTE: we "know" here that the register identifiers used
168 * in the v7m header match the Cortex-M3 Debug Core Register
169 * Selector values for R0..R15, xPSR, MSP, and PSP.
170 */
171 switch (num) {
172 case 0 ... 18:
173 retval = adapter->layout->api->write_reg(adapter->fd, num, value);
174
175 if (retval != ERROR_OK) {
176 struct reg *r;
177
178 LOG_ERROR("JTAG failure");
179 r = armv7m->arm.core_cache->reg_list + num;
180 r->dirty = r->valid;
181 return ERROR_JTAG_DEVICE_ERROR;
182 }
183 LOG_DEBUG("write core reg %i value 0x%" PRIx32 "", (int)num, value);
184 break;
185
186 case ARMV7M_FPSID:
187 case ARMV7M_FPEXC:
188 break;
189
190 case ARMV7M_FPSCR:
191 /* Floating-point Status and Registers */
192 retval = target_write_u32(target, ARMV7M_SCS_DCRDR, value);
193 if (retval != ERROR_OK)
194 return retval;
195 retval = target_write_u32(target, ARMV7M_SCS_DCRSR, 33 | (1<<16));
196 if (retval != ERROR_OK)
197 return retval;
198 LOG_DEBUG("write core reg %i value 0x%" PRIx32 "", (int)num, value);
199 break;
200
201 case ARMV7M_S0 ... ARMV7M_S31:
202 /* Floating-point Status and Registers */
203 retval = target_write_u32(target, ARMV7M_SCS_DCRDR, value);
204 if (retval != ERROR_OK)
205 return retval;
206 retval = target_write_u32(target, ARMV7M_SCS_DCRSR, (num-ARMV7M_S0+64) | (1<<16));
207 if (retval != ERROR_OK)
208 return retval;
209 LOG_DEBUG("write core reg %i value 0x%" PRIx32 "", (int)num, value);
210 break;
211
212 case ARMV7M_D0 ... ARMV7M_D15:
213 break;
214
215 case ARMV7M_PRIMASK:
216 case ARMV7M_BASEPRI:
217 case ARMV7M_FAULTMASK:
218 case ARMV7M_CONTROL:
219 /* Cortex-M3 packages these four registers as bitfields
220 * in one Debug Core register. So say r0 and r2 docs;
221 * it was removed from r1 docs, but still works.
222 */
223
224 adapter->layout->api->read_reg(adapter->fd, 20, &reg);
225
226 switch (num) {
227 case ARMV7M_PRIMASK:
228 buf_set_u32((uint8_t *) &reg, 0, 1, value);
229 break;
230
231 case ARMV7M_BASEPRI:
232 buf_set_u32((uint8_t *) &reg, 8, 8, value);
233 break;
234
235 case ARMV7M_FAULTMASK:
236 buf_set_u32((uint8_t *) &reg, 16, 1, value);
237 break;
238
239 case ARMV7M_CONTROL:
240 buf_set_u32((uint8_t *) &reg, 24, 2, value);
241 break;
242 }
243
244 adapter->layout->api->write_reg(adapter->fd, 20, reg);
245
246 LOG_DEBUG("write special reg %i value 0x%" PRIx32 " ", (int)num, value);
247 break;
248
249 default:
250 return ERROR_COMMAND_SYNTAX_ERROR;
251 }
252
253 return ERROR_OK;
254 }
255
256 static int adapter_examine_debug_reason(struct target *target)
257 {
258 if ((target->debug_reason != DBG_REASON_DBGRQ)
259 && (target->debug_reason != DBG_REASON_SINGLESTEP)) {
260 target->debug_reason = DBG_REASON_BREAKPOINT;
261 }
262
263 return ERROR_OK;
264 }
265
266 static int adapter_init_arch_info(struct target *target,
267 struct cortex_m3_common *cortex_m3,
268 struct jtag_tap *tap)
269 {
270 struct armv7m_common *armv7m;
271
272 LOG_DEBUG("%s", __func__);
273
274 armv7m = &cortex_m3->armv7m;
275 armv7m_init_arch_info(target, armv7m);
276
277 armv7m->load_core_reg_u32 = adapter_load_core_reg_u32;
278 armv7m->store_core_reg_u32 = adapter_store_core_reg_u32;
279
280 armv7m->examine_debug_reason = adapter_examine_debug_reason;
281 armv7m->stlink = true;
282
283 return ERROR_OK;
284 }
285
286 static int adapter_init_target(struct command_context *cmd_ctx,
287 struct target *target)
288 {
289 LOG_DEBUG("%s", __func__);
290
291 armv7m_build_reg_cache(target);
292
293 return ERROR_OK;
294 }
295
296 static int adapter_target_create(struct target *target,
297 Jim_Interp *interp)
298 {
299 LOG_DEBUG("%s", __func__);
300
301 struct cortex_m3_common *cortex_m3 = calloc(1, sizeof(struct cortex_m3_common));
302
303 if (!cortex_m3)
304 return ERROR_COMMAND_SYNTAX_ERROR;
305
306 adapter_init_arch_info(target, cortex_m3, target->tap);
307
308 return ERROR_OK;
309 }
310
311 static int adapter_load_context(struct target *target)
312 {
313 struct armv7m_common *armv7m = target_to_armv7m(target);
314 int num_regs = armv7m->arm.core_cache->num_regs;
315
316 for (int i = 0; i < num_regs; i++) {
317
318 struct reg *r = &armv7m->arm.core_cache->reg_list[i];
319 if (!r->valid)
320 armv7m->arm.read_core_reg(target, r, i, ARM_MODE_ANY);
321 }
322
323 return ERROR_OK;
324 }
325
326 static int adapter_debug_entry(struct target *target)
327 {
328 struct hl_interface_s *adapter = target_to_adapter(target);
329 struct armv7m_common *armv7m = target_to_armv7m(target);
330 struct arm *arm = &armv7m->arm;
331 struct reg *r;
332 uint32_t xPSR;
333 int retval;
334
335 retval = armv7m->examine_debug_reason(target);
336 if (retval != ERROR_OK)
337 return retval;
338
339 adapter_load_context(target);
340
341 /* make sure we clear the vector catch bit */
342 adapter->layout->api->write_debug_reg(adapter->fd, DCB_DEMCR, TRCENA);
343
344 r = arm->core_cache->reg_list + ARMV7M_xPSR;
345 xPSR = buf_get_u32(r->value, 0, 32);
346
347 /* Are we in an exception handler */
348 if (xPSR & 0x1FF) {
349 armv7m->exception_number = (xPSR & 0x1FF);
350
351 arm->core_mode = ARM_MODE_HANDLER;
352 arm->map = armv7m_msp_reg_map;
353 } else {
354 unsigned control = buf_get_u32(arm->core_cache
355 ->reg_list[ARMV7M_CONTROL].value, 0, 2);
356
357 /* is this thread privileged? */
358 arm->core_mode = control & 1
359 ? ARM_MODE_USER_THREAD
360 : ARM_MODE_THREAD;
361
362 /* which stack is it using? */
363 if (control & 2)
364 arm->map = armv7m_psp_reg_map;
365 else
366 arm->map = armv7m_msp_reg_map;
367
368 armv7m->exception_number = 0;
369 }
370
371 LOG_DEBUG("entered debug state in core mode: %s at PC 0x%08" PRIx32 ", target->state: %s",
372 arm_mode_name(arm->core_mode),
373 *(uint32_t *)(arm->pc->value),
374 target_state_name(target));
375
376 return retval;
377 }
378
379 static int adapter_poll(struct target *target)
380 {
381 enum target_state state;
382 struct hl_interface_s *adapter = target_to_adapter(target);
383 struct armv7m_common *armv7m = target_to_armv7m(target);
384 enum target_state prev_target_state = target->state;
385
386 state = adapter->layout->api->state(adapter->fd);
387
388 if (state == TARGET_UNKNOWN) {
389 LOG_ERROR("jtag status contains invalid mode value - communication failure");
390 return ERROR_TARGET_FAILURE;
391 }
392
393 if (target->state == state)
394 return ERROR_OK;
395
396 if (state == TARGET_HALTED) {
397 target->state = state;
398
399 int retval = adapter_debug_entry(target);
400 if (retval != ERROR_OK)
401 return retval;
402
403 if (prev_target_state == TARGET_DEBUG_RUNNING) {
404 target_call_event_callbacks(target, TARGET_EVENT_DEBUG_HALTED);
405 } else {
406 if (arm_semihosting(target, &retval) != 0)
407 return retval;
408
409 target_call_event_callbacks(target, TARGET_EVENT_HALTED);
410 }
411
412 LOG_DEBUG("halted: PC: 0x%08x", buf_get_u32(armv7m->arm.pc->value, 0, 32));
413 }
414
415 return ERROR_OK;
416 }
417
418 static int adapter_assert_reset(struct target *target)
419 {
420 int res = ERROR_OK;
421 struct hl_interface_s *adapter = target_to_adapter(target);
422 struct armv7m_common *armv7m = target_to_armv7m(target);
423 bool use_srst_fallback = true;
424
425 LOG_DEBUG("%s", __func__);
426
427 enum reset_types jtag_reset_config = jtag_get_reset_config();
428
429 bool srst_asserted = false;
430
431 if ((jtag_reset_config & RESET_HAS_SRST) &&
432 (jtag_reset_config & RESET_SRST_NO_GATING)) {
433 jtag_add_reset(0, 1);
434 res = adapter->layout->api->assert_srst(adapter->fd, 0);
435 srst_asserted = true;
436 }
437
438 adapter->layout->api->write_debug_reg(adapter->fd, DCB_DHCSR, DBGKEY|C_DEBUGEN);
439
440 /* only set vector catch if halt is requested */
441 if (target->reset_halt)
442 adapter->layout->api->write_debug_reg(adapter->fd, DCB_DEMCR, TRCENA|VC_CORERESET);
443 else
444 adapter->layout->api->write_debug_reg(adapter->fd, DCB_DEMCR, TRCENA);
445
446 if (jtag_reset_config & RESET_HAS_SRST) {
447 if (!srst_asserted) {
448 jtag_add_reset(0, 1);
449 res = adapter->layout->api->assert_srst(adapter->fd, 0);
450 }
451 if (res == ERROR_COMMAND_NOTFOUND)
452 LOG_ERROR("Hardware srst not supported, falling back to software reset");
453 else if (res == ERROR_OK) {
454 /* hardware srst supported */
455 use_srst_fallback = false;
456 }
457 }
458
459 if (use_srst_fallback) {
460 /* stlink v1 api does not support hardware srst, so we use a software reset fallback */
461 adapter->layout->api->write_debug_reg(adapter->fd, NVIC_AIRCR, AIRCR_VECTKEY | AIRCR_SYSRESETREQ);
462 }
463
464 res = adapter->layout->api->reset(adapter->fd);
465
466 if (res != ERROR_OK)
467 return res;
468
469 /* registers are now invalid */
470 register_cache_invalidate(armv7m->arm.core_cache);
471
472 if (target->reset_halt) {
473 target->state = TARGET_RESET;
474 target->debug_reason = DBG_REASON_DBGRQ;
475 } else {
476 target->state = TARGET_HALTED;
477 }
478
479 return ERROR_OK;
480 }
481
482 static int adapter_deassert_reset(struct target *target)
483 {
484 int res;
485 struct hl_interface_s *adapter = target_to_adapter(target);
486
487 enum reset_types jtag_reset_config = jtag_get_reset_config();
488
489 LOG_DEBUG("%s", __func__);
490
491 if (jtag_reset_config & RESET_HAS_SRST)
492 adapter->layout->api->assert_srst(adapter->fd, 1);
493
494 /* virtual deassert reset, we need it for the internal
495 * jtag state machine
496 */
497 jtag_add_reset(0, 0);
498
499 if (!target->reset_halt) {
500 res = target_resume(target, 1, 0, 0, 0);
501
502 if (res != ERROR_OK)
503 return res;
504 }
505
506 return ERROR_OK;
507 }
508
509 static int adapter_soft_reset_halt(struct target *target)
510 {
511 LOG_DEBUG("%s", __func__);
512 return ERROR_OK;
513 }
514
515 static int adapter_halt(struct target *target)
516 {
517 int res;
518 struct hl_interface_s *adapter = target_to_adapter(target);
519
520 LOG_DEBUG("%s", __func__);
521
522 if (target->state == TARGET_HALTED) {
523 LOG_DEBUG("target was already halted");
524 return ERROR_OK;
525 }
526
527 if (target->state == TARGET_UNKNOWN)
528 LOG_WARNING("target was in unknown state when halt was requested");
529
530 res = adapter->layout->api->halt(adapter->fd);
531
532 if (res != ERROR_OK)
533 return res;
534
535 target->debug_reason = DBG_REASON_DBGRQ;
536
537 return ERROR_OK;
538 }
539
540 static int adapter_resume(struct target *target, int current,
541 uint32_t address, int handle_breakpoints,
542 int debug_execution)
543 {
544 int res;
545 struct hl_interface_s *adapter = target_to_adapter(target);
546 struct armv7m_common *armv7m = target_to_armv7m(target);
547 uint32_t resume_pc;
548 struct breakpoint *breakpoint = NULL;
549 struct reg *pc;
550
551 LOG_DEBUG("%s %d 0x%08x %d %d", __func__, current, address,
552 handle_breakpoints, debug_execution);
553
554 if (target->state != TARGET_HALTED) {
555 LOG_WARNING("target not halted");
556 return ERROR_TARGET_NOT_HALTED;
557 }
558
559 if (!debug_execution) {
560 target_free_all_working_areas(target);
561 cortex_m3_enable_breakpoints(target);
562 cortex_m3_enable_watchpoints(target);
563 }
564
565 pc = armv7m->arm.pc;
566 if (!current) {
567 buf_set_u32(pc->value, 0, 32, address);
568 pc->dirty = true;
569 pc->valid = true;
570 }
571
572 if (!breakpoint_find(target, buf_get_u32(pc->value, 0, 32))
573 && !debug_execution) {
574 armv7m_maybe_skip_bkpt_inst(target, NULL);
575 }
576
577 resume_pc = buf_get_u32(pc->value, 0, 32);
578
579 /* write any user vector flags */
580 res = target_write_u32(target, DCB_DEMCR, TRCENA | armv7m->demcr);
581 if (res != ERROR_OK)
582 return res;
583
584 armv7m_restore_context(target);
585
586 /* registers are now invalid */
587 register_cache_invalidate(armv7m->arm.core_cache);
588
589 /* the front-end may request us not to handle breakpoints */
590 if (handle_breakpoints) {
591 /* Single step past breakpoint at current address */
592 breakpoint = breakpoint_find(target, resume_pc);
593 if (breakpoint) {
594 LOG_DEBUG("unset breakpoint at 0x%8.8" PRIx32 " (ID: %d)",
595 breakpoint->address,
596 breakpoint->unique_id);
597 cortex_m3_unset_breakpoint(target, breakpoint);
598
599 res = adapter->layout->api->step(adapter->fd);
600
601 if (res != ERROR_OK)
602 return res;
603
604 cortex_m3_set_breakpoint(target, breakpoint);
605 }
606 }
607
608 res = adapter->layout->api->run(adapter->fd);
609
610 if (res != ERROR_OK)
611 return res;
612
613 target->debug_reason = DBG_REASON_NOTHALTED;
614
615 if (!debug_execution) {
616 target->state = TARGET_RUNNING;
617 target_call_event_callbacks(target, TARGET_EVENT_RESUMED);
618 } else {
619 target->state = TARGET_DEBUG_RUNNING;
620 target_call_event_callbacks(target, TARGET_EVENT_DEBUG_RESUMED);
621 }
622
623 return ERROR_OK;
624 }
625
626 static int adapter_step(struct target *target, int current,
627 uint32_t address, int handle_breakpoints)
628 {
629 int res;
630 struct hl_interface_s *adapter = target_to_adapter(target);
631 struct armv7m_common *armv7m = target_to_armv7m(target);
632 struct breakpoint *breakpoint = NULL;
633 struct reg *pc = armv7m->arm.pc;
634 bool bkpt_inst_found = false;
635
636 LOG_DEBUG("%s", __func__);
637
638 if (target->state != TARGET_HALTED) {
639 LOG_WARNING("target not halted");
640 return ERROR_TARGET_NOT_HALTED;
641 }
642
643 if (!current) {
644 buf_set_u32(pc->value, 0, 32, address);
645 pc->dirty = true;
646 pc->valid = true;
647 }
648
649 uint32_t pc_value = buf_get_u32(pc->value, 0, 32);
650
651 /* the front-end may request us not to handle breakpoints */
652 if (handle_breakpoints) {
653 breakpoint = breakpoint_find(target, pc_value);
654 if (breakpoint)
655 cortex_m3_unset_breakpoint(target, breakpoint);
656 }
657
658 armv7m_maybe_skip_bkpt_inst(target, &bkpt_inst_found);
659
660 target->debug_reason = DBG_REASON_SINGLESTEP;
661
662 armv7m_restore_context(target);
663
664 target_call_event_callbacks(target, TARGET_EVENT_RESUMED);
665
666 res = adapter->layout->api->step(adapter->fd);
667
668 if (res != ERROR_OK)
669 return res;
670
671 /* registers are now invalid */
672 register_cache_invalidate(armv7m->arm.core_cache);
673
674 if (breakpoint)
675 cortex_m3_set_breakpoint(target, breakpoint);
676
677 adapter_debug_entry(target);
678 target_call_event_callbacks(target, TARGET_EVENT_HALTED);
679
680 LOG_INFO("halted: PC: 0x%08x", buf_get_u32(armv7m->arm.pc->value, 0, 32));
681
682 return ERROR_OK;
683 }
684
685 static int adapter_read_memory(struct target *target, uint32_t address,
686 uint32_t size, uint32_t count,
687 uint8_t *buffer)
688 {
689 struct hl_interface_s *adapter = target_to_adapter(target);
690 int res;
691 uint32_t buffer_threshold = (adapter->param.max_buffer / 4);
692 uint32_t addr_increment = 4;
693 uint32_t c;
694
695 if (!count || !buffer)
696 return ERROR_COMMAND_SYNTAX_ERROR;
697
698 LOG_DEBUG("%s 0x%08x %d %d", __func__, address, size, count);
699
700 /* prepare byte count, buffer threshold
701 * and address increment for none 32bit access
702 */
703 if (size != 4) {
704 count *= size;
705 buffer_threshold = (adapter->param.max_buffer / 4) / 2;
706 addr_increment = 1;
707 }
708
709 while (count) {
710 if (count > buffer_threshold)
711 c = buffer_threshold;
712 else
713 c = count;
714
715 if (size != 4)
716 res = adapter->layout->api->read_mem8(adapter->fd,
717 address, c, buffer);
718 else
719 res = adapter->layout->api->read_mem32(adapter->fd,
720 address, c, buffer);
721
722 if (res != ERROR_OK)
723 return res;
724
725 address += (c * addr_increment);
726 buffer += (c * addr_increment);
727 count -= c;
728 }
729
730 return ERROR_OK;
731 }
732
733 static int adapter_write_memory(struct target *target, uint32_t address,
734 uint32_t size, uint32_t count,
735 const uint8_t *buffer)
736 {
737 struct hl_interface_s *adapter = target_to_adapter(target);
738 int res;
739 uint32_t buffer_threshold = (adapter->param.max_buffer / 4);
740 uint32_t addr_increment = 4;
741 uint32_t c;
742
743 if (!count || !buffer)
744 return ERROR_COMMAND_SYNTAX_ERROR;
745
746 LOG_DEBUG("%s 0x%08x %d %d", __func__, address, size, count);
747
748 /* prepare byte count, buffer threshold
749 * and address increment for none 32bit access
750 */
751 if (size != 4) {
752 count *= size;
753 buffer_threshold = (adapter->param.max_buffer / 4) / 2;
754 addr_increment = 1;
755 }
756
757 while (count) {
758 if (count > buffer_threshold)
759 c = buffer_threshold;
760 else
761 c = count;
762
763 if (size != 4)
764 res = adapter->layout->api->write_mem8(adapter->fd,
765 address, c, buffer);
766 else
767 res = adapter->layout->api->write_mem32(adapter->fd,
768 address, c, buffer);
769
770 if (res != ERROR_OK)
771 return res;
772
773 address += (c * addr_increment);
774 buffer += (c * addr_increment);
775 count -= c;
776 }
777
778 return ERROR_OK;
779 }
780
781 static const struct command_registration adapter_command_handlers[] = {
782 {
783 .chain = arm_command_handlers,
784 },
785 COMMAND_REGISTRATION_DONE
786 };
787
788 struct target_type hla_target = {
789 .name = "hla_target",
790 .deprecated_name = "stm32_stlink",
791
792 .init_target = adapter_init_target,
793 .target_create = adapter_target_create,
794 .examine = cortex_m3_examine,
795 .commands = adapter_command_handlers,
796
797 .poll = adapter_poll,
798 .arch_state = armv7m_arch_state,
799
800 .assert_reset = adapter_assert_reset,
801 .deassert_reset = adapter_deassert_reset,
802 .soft_reset_halt = adapter_soft_reset_halt,
803
804 .halt = adapter_halt,
805 .resume = adapter_resume,
806 .step = adapter_step,
807
808 .get_gdb_reg_list = armv7m_get_gdb_reg_list,
809
810 .read_memory = adapter_read_memory,
811 .write_memory = adapter_write_memory,
812 .checksum_memory = armv7m_checksum_memory,
813 .blank_check_memory = armv7m_blank_check_memory,
814
815 .run_algorithm = armv7m_run_algorithm,
816 .start_algorithm = armv7m_start_algorithm,
817 .wait_algorithm = armv7m_wait_algorithm,
818
819 .add_breakpoint = cortex_m3_add_breakpoint,
820 .remove_breakpoint = cortex_m3_remove_breakpoint,
821 .add_watchpoint = cortex_m3_add_watchpoint,
822 .remove_watchpoint = cortex_m3_remove_watchpoint,
823 };