?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
update files to correct FSF address
[openocd.git] / src / target / etm.c
blobe99c24ffbec36f1bdf8e64f1665ae7ac8b6f0c84
1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
4 * *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
9 * *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
14 * *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
19 ***************************************************************************/
20 #ifdef HAVE_CONFIG_H
21 #include "config.h"
22 #endif
23
24 #include "arm.h"
25 #include "etm.h"
26 #include "etb.h"
27 #include "image.h"
28 #include "arm_disassembler.h"
29 #include "register.h"
30 #include "etm_dummy.h"
31
32 #if BUILD_OOCD_TRACE == 1
33 #include "oocd_trace.h"
34 #endif
35
36
37 /*
38 * ARM "Embedded Trace Macrocell" (ETM) support -- direct JTAG access.
39 *
40 * ETM modules collect instruction and/or data trace information, compress
41 * it, and transfer it to a debugging host through either a (buffered) trace
42 * port (often a 38-pin Mictor connector) or an Embedded Trace Buffer (ETB).
43 *
44 * There are several generations of these modules. Original versions have
45 * JTAG access through a dedicated scan chain. Recent versions have added
46 * access via coprocessor instructions, memory addressing, and the ARM Debug
47 * Interface v5 (ADIv5); and phased out direct JTAG access.
48 *
49 * This code supports up to the ETMv1.3 architecture, as seen in ETM9 and
50 * most common ARM9 systems. Note: "CoreSight ETM9" implements ETMv3.2,
51 * implying non-JTAG connectivity options.
52 *
53 * Relevant documentation includes:
54 * ARM DDI 0157G ... ETM9 (r2p2) Technical Reference Manual
55 * ARM DDI 0315B ... CoreSight ETM9 (r0p1) Technical Reference Manual
56 * ARM IHI 0014O ... Embedded Trace Macrocell, Architecture Specification
57 */
58
59 enum {
60 RO, /* read/only */
61 WO, /* write/only */
62 RW, /* read/write */
63 };
64
65 struct etm_reg_info {
66 uint8_t addr;
67 uint8_t size; /* low-N of 32 bits */
68 uint8_t mode; /* RO, WO, RW */
69 uint8_t bcd_vers; /* 1.0, 2.0, etc */
70 char *name;
71 };
72
73 /*
74 * Registers 0..0x7f are JTAG-addressable using scanchain 6.
75 * (Or on some processors, through coprocessor operations.)
76 * Newer versions of ETM make some W/O registers R/W, and
77 * provide definitions for some previously-unused bits.
78 */
79
80 /* core registers used to version/configure the ETM */
81 static const struct etm_reg_info etm_core[] = {
82 /* NOTE: we "know" the order here ... */
83 { ETM_CONFIG, 32, RO, 0x10, "ETM_config", },
84 { ETM_ID, 32, RO, 0x20, "ETM_id", },
85 };
86
87 /* basic registers that are always there given the right ETM version */
88 static const struct etm_reg_info etm_basic[] = {
89 /* ETM Trace Registers */
90 { ETM_CTRL, 32, RW, 0x10, "ETM_ctrl", },
91 { ETM_TRIG_EVENT, 17, WO, 0x10, "ETM_trig_event", },
92 { ETM_ASIC_CTRL, 8, WO, 0x10, "ETM_asic_ctrl", },
93 { ETM_STATUS, 3, RO, 0x11, "ETM_status", },
94 { ETM_SYS_CONFIG, 9, RO, 0x12, "ETM_sys_config", },
95
96 /* TraceEnable configuration */
97 { ETM_TRACE_RESOURCE_CTRL, 32, WO, 0x12, "ETM_trace_resource_ctrl", },
98 { ETM_TRACE_EN_CTRL2, 16, WO, 0x12, "ETM_trace_en_ctrl2", },
99 { ETM_TRACE_EN_EVENT, 17, WO, 0x10, "ETM_trace_en_event", },
100 { ETM_TRACE_EN_CTRL1, 26, WO, 0x10, "ETM_trace_en_ctrl1", },
101
102 /* ViewData configuration (data trace) */
103 { ETM_VIEWDATA_EVENT, 17, WO, 0x10, "ETM_viewdata_event", },
104 { ETM_VIEWDATA_CTRL1, 32, WO, 0x10, "ETM_viewdata_ctrl1", },
105 { ETM_VIEWDATA_CTRL2, 32, WO, 0x10, "ETM_viewdata_ctrl2", },
106 { ETM_VIEWDATA_CTRL3, 17, WO, 0x10, "ETM_viewdata_ctrl3", },
107
108 /* REVISIT exclude VIEWDATA_CTRL2 when it's not there */
109
110 { 0x78, 12, WO, 0x20, "ETM_sync_freq", },
111 { 0x7a, 22, RO, 0x31, "ETM_config_code_ext", },
112 { 0x7b, 32, WO, 0x31, "ETM_ext_input_select", },
113 { 0x7c, 32, WO, 0x34, "ETM_trace_start_stop", },
114 { 0x7d, 8, WO, 0x34, "ETM_behavior_control", },
115 };
116
117 static const struct etm_reg_info etm_fifofull[] = {
118 /* FIFOFULL configuration */
119 { ETM_FIFOFULL_REGION, 25, WO, 0x10, "ETM_fifofull_region", },
120 { ETM_FIFOFULL_LEVEL, 8, WO, 0x10, "ETM_fifofull_level", },
121 };
122
123 static const struct etm_reg_info etm_addr_comp[] = {
124 /* Address comparator register pairs */
125 #define ADDR_COMPARATOR(i) \
126 { ETM_ADDR_COMPARATOR_VALUE + (i) - 1, 32, WO, 0x10, \
127 "ETM_addr_" #i "_comparator_value", }, \
128 { ETM_ADDR_ACCESS_TYPE + (i) - 1, 7, WO, 0x10, \
129 "ETM_addr_" #i "_access_type", }
130 ADDR_COMPARATOR(1),
131 ADDR_COMPARATOR(2),
132 ADDR_COMPARATOR(3),
133 ADDR_COMPARATOR(4),
134 ADDR_COMPARATOR(5),
135 ADDR_COMPARATOR(6),
136 ADDR_COMPARATOR(7),
137 ADDR_COMPARATOR(8),
138
139 ADDR_COMPARATOR(9),
140 ADDR_COMPARATOR(10),
141 ADDR_COMPARATOR(11),
142 ADDR_COMPARATOR(12),
143 ADDR_COMPARATOR(13),
144 ADDR_COMPARATOR(14),
145 ADDR_COMPARATOR(15),
146 ADDR_COMPARATOR(16),
147 #undef ADDR_COMPARATOR
148 };
149
150 static const struct etm_reg_info etm_data_comp[] = {
151 /* Data Value Comparators (NOTE: odd addresses are reserved) */
152 #define DATA_COMPARATOR(i) \
153 { ETM_DATA_COMPARATOR_VALUE + 2*(i) - 1, 32, WO, 0x10, \
154 "ETM_data_" #i "_comparator_value", }, \
155 { ETM_DATA_COMPARATOR_MASK + 2*(i) - 1, 32, WO, 0x10, \
156 "ETM_data_" #i "_comparator_mask", }
157 DATA_COMPARATOR(1),
158 DATA_COMPARATOR(2),
159 DATA_COMPARATOR(3),
160 DATA_COMPARATOR(4),
161 DATA_COMPARATOR(5),
162 DATA_COMPARATOR(6),
163 DATA_COMPARATOR(7),
164 DATA_COMPARATOR(8),
165 #undef DATA_COMPARATOR
166 };
167
168 static const struct etm_reg_info etm_counters[] = {
169 #define ETM_COUNTER(i) \
170 { ETM_COUNTER_RELOAD_VALUE + (i) - 1, 16, WO, 0x10, \
171 "ETM_counter_" #i "_reload_value", }, \
172 { ETM_COUNTER_ENABLE + (i) - 1, 18, WO, 0x10, \
173 "ETM_counter_" #i "_enable", }, \
174 { ETM_COUNTER_RELOAD_EVENT + (i) - 1, 17, WO, 0x10, \
175 "ETM_counter_" #i "_reload_event", }, \
176 { ETM_COUNTER_VALUE + (i) - 1, 16, RO, 0x10, \
177 "ETM_counter_" #i "_value", }
178 ETM_COUNTER(1),
179 ETM_COUNTER(2),
180 ETM_COUNTER(3),
181 ETM_COUNTER(4),
182 #undef ETM_COUNTER
183 };
184
185 static const struct etm_reg_info etm_sequencer[] = {
186 #define ETM_SEQ(i) \
187 { ETM_SEQUENCER_EVENT + (i), 17, WO, 0x10, \
188 "ETM_sequencer_event" #i, }
189 ETM_SEQ(0), /* 1->2 */
190 ETM_SEQ(1), /* 2->1 */
191 ETM_SEQ(2), /* 2->3 */
192 ETM_SEQ(3), /* 3->1 */
193 ETM_SEQ(4), /* 3->2 */
194 ETM_SEQ(5), /* 1->3 */
195 #undef ETM_SEQ
196 /* 0x66 reserved */
197 { ETM_SEQUENCER_STATE, 2, RO, 0x10, "ETM_sequencer_state", },
198 };
199
200 static const struct etm_reg_info etm_outputs[] = {
201 #define ETM_OUTPUT(i) \
202 { ETM_EXTERNAL_OUTPUT + (i) - 1, 17, WO, 0x10, \
203 "ETM_external_output" #i, }
204
205 ETM_OUTPUT(1),
206 ETM_OUTPUT(2),
207 ETM_OUTPUT(3),
208 ETM_OUTPUT(4),
209 #undef ETM_OUTPUT
210 };
211
212 #if 0
213 /* registers from 0x6c..0x7f were added after ETMv1.3 */
214
215 /* Context ID Comparators */
216 { 0x6c, 32, RO, 0x20, "ETM_contextid_comparator_value1", }
217 { 0x6d, 32, RO, 0x20, "ETM_contextid_comparator_value2", }
218 { 0x6e, 32, RO, 0x20, "ETM_contextid_comparator_value3", }
219 { 0x6f, 32, RO, 0x20, "ETM_contextid_comparator_mask", }
220 #endif
221
222 static int etm_get_reg(struct reg *reg);
223 static int etm_read_reg_w_check(struct reg *reg,
224 uint8_t *check_value, uint8_t *check_mask);
225 static int etm_register_user_commands(struct command_context *cmd_ctx);
226 static int etm_set_reg_w_exec(struct reg *reg, uint8_t *buf);
227 static int etm_write_reg(struct reg *reg, uint32_t value);
228
229 static const struct reg_arch_type etm_scan6_type = {
230 .get = etm_get_reg,
231 .set = etm_set_reg_w_exec,
232 };
233
234 /* Look up register by ID ... most ETM instances only
235 * support a subset of the possible registers.
236 */
237 static struct reg *etm_reg_lookup(struct etm_context *etm_ctx, unsigned id)
238 {
239 struct reg_cache *cache = etm_ctx->reg_cache;
240 unsigned i;
241
242 for (i = 0; i < cache->num_regs; i++) {
243 struct etm_reg *reg = cache->reg_list[i].arch_info;
244
245 if (reg->reg_info->addr == id)
246 return &cache->reg_list[i];
247 }
248
249 /* caller asking for nonexistent register is a bug!
250 * REVISIT say which of the N targets was involved */
251 LOG_ERROR("ETM: register 0x%02x not available", id);
252 return NULL;
253 }
254
255 static void etm_reg_add(unsigned bcd_vers, struct arm_jtag *jtag_info,
256 struct reg_cache *cache, struct etm_reg *ereg,
257 const struct etm_reg_info *r, unsigned nreg)
258 {
259 struct reg *reg = cache->reg_list;
260
261 reg += cache->num_regs;
262 ereg += cache->num_regs;
263
264 /* add up to "nreg" registers from "r", if supported by this
265 * version of the ETM, to the specified cache.
266 */
267 for (; nreg--; r++) {
268
269 /* this ETM may be too old to have some registers */
270 if (r->bcd_vers > bcd_vers)
271 continue;
272
273 reg->name = r->name;
274 reg->size = r->size;
275 reg->value = &ereg->value;
276 reg->arch_info = ereg;
277 reg->type = &etm_scan6_type;
278 reg++;
279 cache->num_regs++;
280
281 ereg->reg_info = r;
282 ereg->jtag_info = jtag_info;
283 ereg++;
284 }
285 }
286
287 struct reg_cache *etm_build_reg_cache(struct target *target,
288 struct arm_jtag *jtag_info, struct etm_context *etm_ctx)
289 {
290 struct reg_cache *reg_cache = malloc(sizeof(struct reg_cache));
291 struct reg *reg_list = NULL;
292 struct etm_reg *arch_info = NULL;
293 unsigned bcd_vers, config;
294
295 /* the actual registers are kept in two arrays */
296 reg_list = calloc(128, sizeof(struct reg));
297 arch_info = calloc(128, sizeof(struct etm_reg));
298
299 /* fill in values for the reg cache */
300 reg_cache->name = "etm registers";
301 reg_cache->next = NULL;
302 reg_cache->reg_list = reg_list;
303 reg_cache->num_regs = 0;
304
305 /* add ETM_CONFIG, then parse its values to see
306 * which other registers exist in this ETM
307 */
308 etm_reg_add(0x10, jtag_info, reg_cache, arch_info,
309 etm_core, 1);
310
311 etm_get_reg(reg_list);
312 etm_ctx->config = buf_get_u32((void *)&arch_info->value, 0, 32);
313 config = etm_ctx->config;
314
315 /* figure ETM version then add base registers */
316 if (config & (1 << 31)) {
317 LOG_WARNING("ETMv2+ support is incomplete");
318
319 /* REVISIT more registers may exist; they may now be
320 * readable; more register bits have defined meanings;
321 * don't presume trace start/stop support is present;
322 * and include any context ID comparator registers.
323 */
324 etm_reg_add(0x20, jtag_info, reg_cache, arch_info,
325 etm_core + 1, 1);
326 etm_get_reg(reg_list + 1);
327 etm_ctx->id = buf_get_u32(
328 (void *)&arch_info[1].value, 0, 32);
329 LOG_DEBUG("ETM ID: %08x", (unsigned) etm_ctx->id);
330 bcd_vers = 0x10 + (((etm_ctx->id) >> 4) & 0xff);
331
332 } else {
333 switch (config >> 28) {
334 case 7:
335 case 5:
336 case 3:
337 bcd_vers = 0x13;
338 break;
339 case 4:
340 case 2:
341 bcd_vers = 0x12;
342 break;
343 case 1:
344 bcd_vers = 0x11;
345 break;
346 case 0:
347 bcd_vers = 0x10;
348 break;
349 default:
350 LOG_WARNING("Bad ETMv1 protocol %d", config >> 28);
351 goto fail;
352 }
353 }
354 etm_ctx->bcd_vers = bcd_vers;
355 LOG_INFO("ETM v%d.%d", bcd_vers >> 4, bcd_vers & 0xf);
356
357 etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info,
358 etm_basic, ARRAY_SIZE(etm_basic));
359
360 /* address and data comparators; counters; outputs */
361 etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info,
362 etm_addr_comp, 4 * (0x0f & (config >> 0)));
363 etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info,
364 etm_data_comp, 2 * (0x0f & (config >> 4)));
365 etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info,
366 etm_counters, 4 * (0x07 & (config >> 13)));
367 etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info,
368 etm_outputs, (0x07 & (config >> 20)));
369
370 /* FIFOFULL presence is optional
371 * REVISIT for ETMv1.2 and later, don't bother adding this
372 * unless ETM_SYS_CONFIG says it's also *supported* ...
373 */
374 if (config & (1 << 23))
375 etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info,
376 etm_fifofull, ARRAY_SIZE(etm_fifofull));
377
378 /* sequencer is optional (for state-dependant triggering) */
379 if (config & (1 << 16))
380 etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info,
381 etm_sequencer, ARRAY_SIZE(etm_sequencer));
382
383 /* REVISIT could realloc and likely save half the memory
384 * in the two chunks we allocated...
385 */
386
387 /* the ETM might have an ETB connected */
388 if (strcmp(etm_ctx->capture_driver->name, "etb") == 0) {
389 struct etb *etb = etm_ctx->capture_driver_priv;
390
391 if (!etb) {
392 LOG_ERROR("etb selected as etm capture driver, but no ETB configured");
393 goto fail;
394 }
395
396 reg_cache->next = etb_build_reg_cache(etb);
397
398 etb->reg_cache = reg_cache->next;
399 }
400
401 etm_ctx->reg_cache = reg_cache;
402 return reg_cache;
403
404 fail:
405 free(reg_cache);
406 free(reg_list);
407 free(arch_info);
408 return NULL;
409 }
410
411 static int etm_read_reg(struct reg *reg)
412 {
413 return etm_read_reg_w_check(reg, NULL, NULL);
414 }
415
416 static int etm_store_reg(struct reg *reg)
417 {
418 return etm_write_reg(reg, buf_get_u32(reg->value, 0, reg->size));
419 }
420
421 int etm_setup(struct target *target)
422 {
423 int retval;
424 uint32_t etm_ctrl_value;
425 struct arm *arm = target_to_arm(target);
426 struct etm_context *etm_ctx = arm->etm;
427 struct reg *etm_ctrl_reg;
428
429 etm_ctrl_reg = etm_reg_lookup(etm_ctx, ETM_CTRL);
430 if (!etm_ctrl_reg)
431 return ERROR_OK;
432
433 /* initialize some ETM control register settings */
434 etm_get_reg(etm_ctrl_reg);
435 etm_ctrl_value = buf_get_u32(etm_ctrl_reg->value, 0, 32);
436
437 /* clear the ETM powerdown bit (0) */
438 etm_ctrl_value &= ~ETM_CTRL_POWERDOWN;
439
440 /* configure port width (21,6:4), mode (13,17:16) and
441 * for older modules clocking (13)
442 */
443 etm_ctrl_value = (etm_ctrl_value
444 & ~ETM_PORT_WIDTH_MASK
445 & ~ETM_PORT_MODE_MASK
446 & ~ETM_CTRL_DBGRQ
447 & ~ETM_PORT_CLOCK_MASK)
448 | etm_ctx->control;
449
450 buf_set_u32(etm_ctrl_reg->value, 0, 32, etm_ctrl_value);
451 etm_store_reg(etm_ctrl_reg);
452
453 etm_ctx->control = etm_ctrl_value;
454
455 retval = jtag_execute_queue();
456 if (retval != ERROR_OK)
457 return retval;
458
459 /* REVISIT for ETMv3.0 and later, read ETM_sys_config to
460 * verify that those width and mode settings are OK ...
461 */
462
463 retval = etm_ctx->capture_driver->init(etm_ctx);
464 if (retval != ERROR_OK) {
465 LOG_ERROR("ETM capture driver initialization failed");
466 return retval;
467 }
468 return ERROR_OK;
469 }
470
471 static int etm_get_reg(struct reg *reg)
472 {
473 int retval;
474
475 retval = etm_read_reg(reg);
476 if (retval != ERROR_OK) {
477 LOG_ERROR("BUG: error scheduling etm register read");
478 return retval;
479 }
480
481 retval = jtag_execute_queue();
482 if (retval != ERROR_OK) {
483 LOG_ERROR("register read failed");
484 return retval;
485 }
486
487 return ERROR_OK;
488 }
489
490 static int etm_read_reg_w_check(struct reg *reg,
491 uint8_t *check_value, uint8_t *check_mask)
492 {
493 struct etm_reg *etm_reg = reg->arch_info;
494 const struct etm_reg_info *r = etm_reg->reg_info;
495 uint8_t reg_addr = r->addr & 0x7f;
496 struct scan_field fields[3];
497 int retval;
498
499 if (etm_reg->reg_info->mode == WO) {
500 LOG_ERROR("BUG: can't read write-only register %s", r->name);
501 return ERROR_COMMAND_SYNTAX_ERROR;
502 }
503
504 LOG_DEBUG("%s (%u)", r->name, reg_addr);
505
506 retval = arm_jtag_scann(etm_reg->jtag_info, 0x6, TAP_IDLE);
507 if (retval != ERROR_OK)
508 return retval;
509 retval = arm_jtag_set_instr(etm_reg->jtag_info,
510 etm_reg->jtag_info->intest_instr,
511 NULL,
512 TAP_IDLE);
513 if (retval != ERROR_OK)
514 return retval;
515
516 fields[0].num_bits = 32;
517 fields[0].out_value = reg->value;
518 fields[0].in_value = NULL;
519 fields[0].check_value = NULL;
520 fields[0].check_mask = NULL;
521
522 fields[1].num_bits = 7;
523 uint8_t temp1;
524 fields[1].out_value = &temp1;
525 buf_set_u32(&temp1, 0, 7, reg_addr);
526 fields[1].in_value = NULL;
527 fields[1].check_value = NULL;
528 fields[1].check_mask = NULL;
529
530 fields[2].num_bits = 1;
531 uint8_t temp2;
532 fields[2].out_value = &temp2;
533 buf_set_u32(&temp2, 0, 1, 0);
534 fields[2].in_value = NULL;
535 fields[2].check_value = NULL;
536 fields[2].check_mask = NULL;
537
538 jtag_add_dr_scan(etm_reg->jtag_info->tap, 3, fields, TAP_IDLE);
539
540 fields[0].in_value = reg->value;
541 fields[0].check_value = check_value;
542 fields[0].check_mask = check_mask;
543
544 jtag_add_dr_scan_check(etm_reg->jtag_info->tap, 3, fields, TAP_IDLE);
545
546 return ERROR_OK;
547 }
548
549 static int etm_set_reg(struct reg *reg, uint32_t value)
550 {
551 int retval = etm_write_reg(reg, value);
552 if (retval != ERROR_OK) {
553 LOG_ERROR("BUG: error scheduling etm register write");
554 return retval;
555 }
556
557 buf_set_u32(reg->value, 0, reg->size, value);
558 reg->valid = 1;
559 reg->dirty = 0;
560
561 return ERROR_OK;
562 }
563
564 static int etm_set_reg_w_exec(struct reg *reg, uint8_t *buf)
565 {
566 int retval;
567
568 etm_set_reg(reg, buf_get_u32(buf, 0, reg->size));
569
570 retval = jtag_execute_queue();
571 if (retval != ERROR_OK) {
572 LOG_ERROR("register write failed");
573 return retval;
574 }
575 return ERROR_OK;
576 }
577
578 static int etm_write_reg(struct reg *reg, uint32_t value)
579 {
580 struct etm_reg *etm_reg = reg->arch_info;
581 const struct etm_reg_info *r = etm_reg->reg_info;
582 uint8_t reg_addr = r->addr & 0x7f;
583 struct scan_field fields[3];
584 int retval;
585
586 if (etm_reg->reg_info->mode == RO) {
587 LOG_ERROR("BUG: can't write read--only register %s", r->name);
588 return ERROR_COMMAND_SYNTAX_ERROR;
589 }
590
591 LOG_DEBUG("%s (%u): 0x%8.8" PRIx32 "", r->name, reg_addr, value);
592
593 retval = arm_jtag_scann(etm_reg->jtag_info, 0x6, TAP_IDLE);
594 if (retval != ERROR_OK)
595 return retval;
596 retval = arm_jtag_set_instr(etm_reg->jtag_info,
597 etm_reg->jtag_info->intest_instr,
598 NULL,
599 TAP_IDLE);
600 if (retval != ERROR_OK)
601 return retval;
602
603 fields[0].num_bits = 32;
604 uint8_t tmp1[4];
605 fields[0].out_value = tmp1;
606 buf_set_u32(tmp1, 0, 32, value);
607 fields[0].in_value = NULL;
608
609 fields[1].num_bits = 7;
610 uint8_t tmp2;
611 fields[1].out_value = &tmp2;
612 buf_set_u32(&tmp2, 0, 7, reg_addr);
613 fields[1].in_value = NULL;
614
615 fields[2].num_bits = 1;
616 uint8_t tmp3;
617 fields[2].out_value = &tmp3;
618 buf_set_u32(&tmp3, 0, 1, 1);
619 fields[2].in_value = NULL;
620
621 jtag_add_dr_scan(etm_reg->jtag_info->tap, 3, fields, TAP_IDLE);
622
623 return ERROR_OK;
624 }
625
626
627 /* ETM trace analysis functionality */
628
629 static struct etm_capture_driver *etm_capture_drivers[] = {
630 &etb_capture_driver,
631 &etm_dummy_capture_driver,
632 #if BUILD_OOCD_TRACE == 1
633 &oocd_trace_capture_driver,
634 #endif
635 NULL
636 };
637
638 static int etm_read_instruction(struct etm_context *ctx, struct arm_instruction *instruction)
639 {
640 int i;
641 int section = -1;
642 size_t size_read;
643 uint32_t opcode;
644 int retval;
645
646 if (!ctx->image)
647 return ERROR_TRACE_IMAGE_UNAVAILABLE;
648
649 /* search for the section the current instruction belongs to */
650 for (i = 0; i < ctx->image->num_sections; i++) {
651 if ((ctx->image->sections[i].base_address <= ctx->current_pc) &&
652 (ctx->image->sections[i].base_address + ctx->image->sections[i].size >
653 ctx->current_pc)) {
654 section = i;
655 break;
656 }
657 }
658
659 if (section == -1) {
660 /* current instruction couldn't be found in the image */
661 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
662 }
663
664 if (ctx->core_state == ARM_STATE_ARM) {
665 uint8_t buf[4];
666 retval = image_read_section(ctx->image, section,
667 ctx->current_pc -
668 ctx->image->sections[section].base_address,
669 4, buf, &size_read);
670 if (retval != ERROR_OK) {
671 LOG_ERROR("error while reading instruction");
672 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
673 }
674 opcode = target_buffer_get_u32(ctx->target, buf);
675 arm_evaluate_opcode(opcode, ctx->current_pc, instruction);
676 } else if (ctx->core_state == ARM_STATE_THUMB) {
677 uint8_t buf[2];
678 retval = image_read_section(ctx->image, section,
679 ctx->current_pc -
680 ctx->image->sections[section].base_address,
681 2, buf, &size_read);
682 if (retval != ERROR_OK) {
683 LOG_ERROR("error while reading instruction");
684 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
685 }
686 opcode = target_buffer_get_u16(ctx->target, buf);
687 thumb_evaluate_opcode(opcode, ctx->current_pc, instruction);
688 } else if (ctx->core_state == ARM_STATE_JAZELLE) {
689 LOG_ERROR("BUG: tracing of jazelle code not supported");
690 return ERROR_FAIL;
691 } else {
692 LOG_ERROR("BUG: unknown core state encountered");
693 return ERROR_FAIL;
694 }
695
696 return ERROR_OK;
697 }
698
699 static int etmv1_next_packet(struct etm_context *ctx, uint8_t *packet, int apo)
700 {
701 while (ctx->data_index < ctx->trace_depth) {
702 /* if the caller specified an address packet offset, skip until the
703 * we reach the n-th cycle marked with tracesync */
704 if (apo > 0) {
705 if (ctx->trace_data[ctx->data_index].flags & ETMV1_TRACESYNC_CYCLE)
706 apo--;
707
708 if (apo > 0) {
709 ctx->data_index++;
710 ctx->data_half = 0;
711 }
712 continue;
713 }
714
715 /* no tracedata output during a TD cycle
716 * or in a trigger cycle */
717 if ((ctx->trace_data[ctx->data_index].pipestat == STAT_TD)
718 || (ctx->trace_data[ctx->data_index].flags & ETMV1_TRIGGER_CYCLE)) {
719 ctx->data_index++;
720 ctx->data_half = 0;
721 continue;
722 }
723
724 /* FIXME there are more port widths than these... */
725 if ((ctx->control & ETM_PORT_WIDTH_MASK) == ETM_PORT_16BIT) {
726 if (ctx->data_half == 0) {
727 *packet = ctx->trace_data[ctx->data_index].packet & 0xff;
728 ctx->data_half = 1;
729 } else {
730 *packet = (ctx->trace_data[ctx->data_index].packet & 0xff00) >> 8;
731 ctx->data_half = 0;
732 ctx->data_index++;
733 }
734 } else if ((ctx->control & ETM_PORT_WIDTH_MASK) == ETM_PORT_8BIT) {
735 *packet = ctx->trace_data[ctx->data_index].packet & 0xff;
736 ctx->data_index++;
737 } else {
738 /* on a 4-bit port, a packet will be output during two consecutive cycles */
739 if (ctx->data_index > (ctx->trace_depth - 2))
740 return -1;
741
742 *packet = ctx->trace_data[ctx->data_index].packet & 0xf;
743 *packet |= (ctx->trace_data[ctx->data_index + 1].packet & 0xf) << 4;
744 ctx->data_index += 2;
745 }
746
747 return 0;
748 }
749
750 return -1;
751 }
752
753 static int etmv1_branch_address(struct etm_context *ctx)
754 {
755 int retval;
756 uint8_t packet;
757 int shift = 0;
758 int apo;
759 uint32_t i;
760
761 /* quit analysis if less than two cycles are left in the trace
762 * because we can't extract the APO */
763 if (ctx->data_index > (ctx->trace_depth - 2))
764 return -1;
765
766 /* a BE could be output during an APO cycle, skip the current
767 * and continue with the new one */
768 if (ctx->trace_data[ctx->pipe_index + 1].pipestat & 0x4)
769 return 1;
770 if (ctx->trace_data[ctx->pipe_index + 2].pipestat & 0x4)
771 return 2;
772
773 /* address packet offset encoded in the next two cycles' pipestat bits */
774 apo = ctx->trace_data[ctx->pipe_index + 1].pipestat & 0x3;
775 apo |= (ctx->trace_data[ctx->pipe_index + 2].pipestat & 0x3) << 2;
776
777 /* count number of tracesync cycles between current pipe_index and data_index
778 * i.e. the number of tracesyncs that data_index already passed by
779 * to subtract them from the APO */
780 for (i = ctx->pipe_index; i < ctx->data_index; i++) {
781 if (ctx->trace_data[ctx->pipe_index + 1].pipestat & ETMV1_TRACESYNC_CYCLE)
782 apo--;
783 }
784
785 /* extract up to four 7-bit packets */
786 do {
787 retval = etmv1_next_packet(ctx, &packet, (shift == 0) ? apo + 1 : 0);
788 if (retval != 0)
789 return -1;
790 ctx->last_branch &= ~(0x7f << shift);
791 ctx->last_branch |= (packet & 0x7f) << shift;
792 shift += 7;
793 } while ((packet & 0x80) && (shift < 28));
794
795 /* one last packet holding 4 bits of the address, plus the branch reason code */
796 if ((shift == 28) && (packet & 0x80)) {
797 retval = etmv1_next_packet(ctx, &packet, 0);
798 if (retval != 0)
799 return -1;
800 ctx->last_branch &= 0x0fffffff;
801 ctx->last_branch |= (packet & 0x0f) << 28;
802 ctx->last_branch_reason = (packet & 0x70) >> 4;
803 shift += 4;
804 } else
805 ctx->last_branch_reason = 0;
806
807 if (shift == 32)
808 ctx->pc_ok = 1;
809
810 /* if a full address was output, we might have branched into Jazelle state */
811 if ((shift == 32) && (packet & 0x80))
812 ctx->core_state = ARM_STATE_JAZELLE;
813 else {
814 /* if we didn't branch into Jazelle state, the current processor state is
815 * encoded in bit 0 of the branch target address */
816 if (ctx->last_branch & 0x1) {
817 ctx->core_state = ARM_STATE_THUMB;
818 ctx->last_branch &= ~0x1;
819 } else {
820 ctx->core_state = ARM_STATE_ARM;
821 ctx->last_branch &= ~0x3;
822 }
823 }
824
825 return 0;
826 }
827
828 static int etmv1_data(struct etm_context *ctx, int size, uint32_t *data)
829 {
830 int j;
831 uint8_t buf[4];
832 int retval;
833
834 for (j = 0; j < size; j++) {
835 retval = etmv1_next_packet(ctx, &buf[j], 0);
836 if (retval != 0)
837 return -1;
838 }
839
840 if (size == 8) {
841 LOG_ERROR("TODO: add support for 64-bit values");
842 return -1;
843 } else if (size == 4)
844 *data = target_buffer_get_u32(ctx->target, buf);
845 else if (size == 2)
846 *data = target_buffer_get_u16(ctx->target, buf);
847 else if (size == 1)
848 *data = buf[0];
849 else
850 return -1;
851
852 return 0;
853 }
854
855 static int etmv1_analyze_trace(struct etm_context *ctx, struct command_context *cmd_ctx)
856 {
857 int retval;
858 struct arm_instruction instruction;
859
860 /* read the trace data if it wasn't read already */
861 if (ctx->trace_depth == 0)
862 ctx->capture_driver->read_trace(ctx);
863
864 if (ctx->trace_depth == 0) {
865 command_print(cmd_ctx, "Trace is empty.");
866 return ERROR_OK;
867 }
868
869 /* start at the beginning of the captured trace */
870 ctx->pipe_index = 0;
871 ctx->data_index = 0;
872 ctx->data_half = 0;
873
874 /* neither the PC nor the data pointer are valid */
875 ctx->pc_ok = 0;
876 ctx->ptr_ok = 0;
877
878 while (ctx->pipe_index < ctx->trace_depth) {
879 uint8_t pipestat = ctx->trace_data[ctx->pipe_index].pipestat;
880 uint32_t next_pc = ctx->current_pc;
881 uint32_t old_data_index = ctx->data_index;
882 uint32_t old_data_half = ctx->data_half;
883 uint32_t old_index = ctx->pipe_index;
884 uint32_t last_instruction = ctx->last_instruction;
885 uint32_t cycles = 0;
886 int current_pc_ok = ctx->pc_ok;
887
888 if (ctx->trace_data[ctx->pipe_index].flags & ETMV1_TRIGGER_CYCLE)
889 command_print(cmd_ctx, "--- trigger ---");
890
891 /* instructions execute in IE/D or BE/D cycles */
892 if ((pipestat == STAT_IE) || (pipestat == STAT_ID))
893 ctx->last_instruction = ctx->pipe_index;
894
895 /* if we don't have a valid pc skip until we reach an indirect branch */
896 if ((!ctx->pc_ok) && (pipestat != STAT_BE)) {
897 ctx->pipe_index++;
898 continue;
899 }
900
901 /* any indirect branch could have interrupted instruction flow
902 * - the branch reason code could indicate a trace discontinuity
903 * - a branch to the exception vectors indicates an exception
904 */
905 if ((pipestat == STAT_BE) || (pipestat == STAT_BD)) {
906 /* backup current data index, to be able to consume the branch address
907 * before examining data address and values
908 */
909 old_data_index = ctx->data_index;
910 old_data_half = ctx->data_half;
911
912 ctx->last_instruction = ctx->pipe_index;
913
914 retval = etmv1_branch_address(ctx);
915 if (retval != 0) {
916 /* negative return value from etmv1_branch_address means we ran out of packets,
917 * quit analysing the trace */
918 if (retval < 0)
919 break;
920
921 /* a positive return values means the current branch was abandoned,
922 * and a new branch was encountered in cycle ctx->pipe_index + retval;
923 */
924 LOG_WARNING(
925 "abandoned branch encountered, correctnes of analysis uncertain");
926 ctx->pipe_index += retval;
927 continue;
928 }
929
930 /* skip over APO cycles */
931 ctx->pipe_index += 2;
932
933 switch (ctx->last_branch_reason) {
934 case 0x0: /* normal PC change */
935 next_pc = ctx->last_branch;
936 break;
937 case 0x1: /* tracing enabled */
938 command_print(cmd_ctx,
939 "--- tracing enabled at 0x%8.8" PRIx32 " ---",
940 ctx->last_branch);
941 ctx->current_pc = ctx->last_branch;
942 ctx->pipe_index++;
943 continue;
944 break;
945 case 0x2: /* trace restarted after FIFO overflow */
946 command_print(cmd_ctx,
947 "--- trace restarted after FIFO overflow at 0x%8.8" PRIx32 " ---",
948 ctx->last_branch);
949 ctx->current_pc = ctx->last_branch;
950 ctx->pipe_index++;
951 continue;
952 break;
953 case 0x3: /* exit from debug state */
954 command_print(cmd_ctx,
955 "--- exit from debug state at 0x%8.8" PRIx32 " ---",
956 ctx->last_branch);
957 ctx->current_pc = ctx->last_branch;
958 ctx->pipe_index++;
959 continue;
960 break;
961 case 0x4: /* periodic synchronization point */
962 next_pc = ctx->last_branch;
963 /* if we had no valid PC prior to this synchronization point,
964 * we have to move on with the next trace cycle
965 */
966 if (!current_pc_ok) {
967 command_print(cmd_ctx,
968 "--- periodic synchronization point at 0x%8.8" PRIx32 " ---",
969 next_pc);
970 ctx->current_pc = next_pc;
971 ctx->pipe_index++;
972 continue;
973 }
974 break;
975 default: /* reserved */
976 LOG_ERROR(
977 "BUG: branch reason code 0x%" PRIx32 " is reserved",
978 ctx->last_branch_reason);
979 return ERROR_FAIL;
980 }
981
982 /* if we got here the branch was a normal PC change
983 * (or a periodic synchronization point, which means the same for that matter)
984 * if we didn't accquire a complete PC continue with the next cycle
985 */
986 if (!ctx->pc_ok)
987 continue;
988
989 /* indirect branch to the exception vector means an exception occured */
990 if ((ctx->last_branch <= 0x20)
991 || ((ctx->last_branch >= 0xffff0000) &&
992 (ctx->last_branch <= 0xffff0020))) {
993 if ((ctx->last_branch & 0xff) == 0x10)
994 command_print(cmd_ctx, "data abort");
995 else {
996 command_print(cmd_ctx,
997 "exception vector 0x%2.2" PRIx32 "",
998 ctx->last_branch);
999 ctx->current_pc = ctx->last_branch;
1000 ctx->pipe_index++;
1001 continue;
1002 }
1003 }
1004 }
1005
1006 /* an instruction was executed (or not, depending on the condition flags)
1007 * retrieve it from the image for displaying */
1008 if (ctx->pc_ok && (pipestat != STAT_WT) && (pipestat != STAT_TD) &&
1009 !(((pipestat == STAT_BE) || (pipestat == STAT_BD)) &&
1010 ((ctx->last_branch_reason != 0x0) && (ctx->last_branch_reason != 0x4)))) {
1011 retval = etm_read_instruction(ctx, &instruction);
1012 if (retval != ERROR_OK) {
1013 /* can't continue tracing with no image available */
1014 if (retval == ERROR_TRACE_IMAGE_UNAVAILABLE)
1015 return retval;
1016 else if (retval == ERROR_TRACE_INSTRUCTION_UNAVAILABLE) {
1017 /* TODO: handle incomplete images
1018 * for now we just quit the analsysis*/
1019 return retval;
1020 }
1021 }
1022
1023 cycles = old_index - last_instruction;
1024 }
1025
1026 if ((pipestat == STAT_ID) || (pipestat == STAT_BD)) {
1027 uint32_t new_data_index = ctx->data_index;
1028 uint32_t new_data_half = ctx->data_half;
1029
1030 /* in case of a branch with data, the branch target address was consumed before
1031 * we temporarily go back to the saved data index */
1032 if (pipestat == STAT_BD) {
1033 ctx->data_index = old_data_index;
1034 ctx->data_half = old_data_half;
1035 }
1036
1037 if (ctx->control & ETM_CTRL_TRACE_ADDR) {
1038 uint8_t packet;
1039 int shift = 0;
1040
1041 do {
1042 retval = etmv1_next_packet(ctx, &packet, 0);
1043 if (retval != 0)
1044 return ERROR_ETM_ANALYSIS_FAILED;
1045 ctx->last_ptr &= ~(0x7f << shift);
1046 ctx->last_ptr |= (packet & 0x7f) << shift;
1047 shift += 7;
1048 } while ((packet & 0x80) && (shift < 32));
1049
1050 if (shift >= 32)
1051 ctx->ptr_ok = 1;
1052
1053 if (ctx->ptr_ok)
1054 command_print(cmd_ctx,
1055 "address: 0x%8.8" PRIx32 "",
1056 ctx->last_ptr);
1057 }
1058
1059 if (ctx->control & ETM_CTRL_TRACE_DATA) {
1060 if ((instruction.type == ARM_LDM) ||
1061 (instruction.type == ARM_STM)) {
1062 int i;
1063 for (i = 0; i < 16; i++) {
1064 if (instruction.info.load_store_multiple.
1065 register_list & (1 << i)) {
1066 uint32_t data;
1067 if (etmv1_data(ctx, 4, &data) != 0)
1068 return ERROR_ETM_ANALYSIS_FAILED;
1069 command_print(cmd_ctx,
1070 "data: 0x%8.8" PRIx32 "",
1071 data);
1072 }
1073 }
1074 } else if ((instruction.type >= ARM_LDR) &&
1075 (instruction.type <= ARM_STRH)) {
1076 uint32_t data;
1077 if (etmv1_data(ctx, arm_access_size(&instruction),
1078 &data) != 0)
1079 return ERROR_ETM_ANALYSIS_FAILED;
1080 command_print(cmd_ctx, "data: 0x%8.8" PRIx32 "", data);
1081 }
1082 }
1083
1084 /* restore data index after consuming BD address and data */
1085 if (pipestat == STAT_BD) {
1086 ctx->data_index = new_data_index;
1087 ctx->data_half = new_data_half;
1088 }
1089 }
1090
1091 /* adjust PC */
1092 if ((pipestat == STAT_IE) || (pipestat == STAT_ID)) {
1093 if (((instruction.type == ARM_B) ||
1094 (instruction.type == ARM_BL) ||
1095 (instruction.type == ARM_BLX)) &&
1096 (instruction.info.b_bl_bx_blx.target_address != 0xffffffff))
1097 next_pc = instruction.info.b_bl_bx_blx.target_address;
1098 else
1099 next_pc += (ctx->core_state == ARM_STATE_ARM) ? 4 : 2;
1100 } else if (pipestat == STAT_IN)
1101 next_pc += (ctx->core_state == ARM_STATE_ARM) ? 4 : 2;
1102
1103 if ((pipestat != STAT_TD) && (pipestat != STAT_WT)) {
1104 char cycles_text[32] = "";
1105
1106 /* if the trace was captured with cycle accurate tracing enabled,
1107 * output the number of cycles since the last executed instruction
1108 */
1109 if (ctx->control & ETM_CTRL_CYCLE_ACCURATE) {
1110 snprintf(cycles_text, 32, " (%i %s)",
1111 (int)cycles,
1112 (cycles == 1) ? "cycle" : "cycles");
1113 }
1114
1115 command_print(cmd_ctx, "%s%s%s",
1116 instruction.text,
1117 (pipestat == STAT_IN) ? " (not executed)" : "",
1118 cycles_text);
1119
1120 ctx->current_pc = next_pc;
1121
1122 /* packets for an instruction don't start on or before the preceding
1123 * functional pipestat (i.e. other than WT or TD)
1124 */
1125 if (ctx->data_index <= ctx->pipe_index) {
1126 ctx->data_index = ctx->pipe_index + 1;
1127 ctx->data_half = 0;
1128 }
1129 }
1130
1131 ctx->pipe_index += 1;
1132 }
1133
1134 return ERROR_OK;
1135 }
1136
1137 static COMMAND_HELPER(handle_etm_tracemode_command_update,
1138 uint32_t *mode)
1139 {
1140 uint32_t tracemode;
1141
1142 /* what parts of data access are traced? */
1143 if (strcmp(CMD_ARGV[0], "none") == 0)
1144 tracemode = 0;
1145 else if (strcmp(CMD_ARGV[0], "data") == 0)
1146 tracemode = ETM_CTRL_TRACE_DATA;
1147 else if (strcmp(CMD_ARGV[0], "address") == 0)
1148 tracemode = ETM_CTRL_TRACE_ADDR;
1149 else if (strcmp(CMD_ARGV[0], "all") == 0)
1150 tracemode = ETM_CTRL_TRACE_DATA | ETM_CTRL_TRACE_ADDR;
1151 else {
1152 command_print(CMD_CTX, "invalid option '%s'", CMD_ARGV[0]);
1153 return ERROR_COMMAND_SYNTAX_ERROR;
1154 }
1155
1156 uint8_t context_id;
1157 COMMAND_PARSE_NUMBER(u8, CMD_ARGV[1], context_id);
1158 switch (context_id) {
1159 case 0:
1160 tracemode |= ETM_CTRL_CONTEXTID_NONE;
1161 break;
1162 case 8:
1163 tracemode |= ETM_CTRL_CONTEXTID_8;
1164 break;
1165 case 16:
1166 tracemode |= ETM_CTRL_CONTEXTID_16;
1167 break;
1168 case 32:
1169 tracemode |= ETM_CTRL_CONTEXTID_32;
1170 break;
1171 default:
1172 command_print(CMD_CTX, "invalid option '%s'", CMD_ARGV[1]);
1173 return ERROR_COMMAND_SYNTAX_ERROR;
1174 }
1175
1176 bool etmv1_cycle_accurate;
1177 COMMAND_PARSE_ENABLE(CMD_ARGV[2], etmv1_cycle_accurate);
1178 if (etmv1_cycle_accurate)
1179 tracemode |= ETM_CTRL_CYCLE_ACCURATE;
1180
1181 bool etmv1_branch_output;
1182 COMMAND_PARSE_ENABLE(CMD_ARGV[3], etmv1_branch_output);
1183 if (etmv1_branch_output)
1184 tracemode |= ETM_CTRL_BRANCH_OUTPUT;
1185
1186 /* IGNORED:
1187 * - CPRT tracing (coprocessor register transfers)
1188 * - debug request (causes debug entry on trigger)
1189 * - stall on FIFOFULL (preventing tracedata lossage)
1190 */
1191 *mode = tracemode;
1192
1193 return ERROR_OK;
1194 }
1195
1196 COMMAND_HANDLER(handle_etm_tracemode_command)
1197 {
1198 struct target *target = get_current_target(CMD_CTX);
1199 struct arm *arm = target_to_arm(target);
1200 struct etm_context *etm;
1201
1202 if (!is_arm(arm)) {
1203 command_print(CMD_CTX, "ETM: current target isn't an ARM");
1204 return ERROR_FAIL;
1205 }
1206
1207 etm = arm->etm;
1208 if (!etm) {
1209 command_print(CMD_CTX, "current target doesn't have an ETM configured");
1210 return ERROR_FAIL;
1211 }
1212
1213 uint32_t tracemode = etm->control;
1214
1215 switch (CMD_ARGC) {
1216 case 0:
1217 break;
1218 case 4:
1219 CALL_COMMAND_HANDLER(handle_etm_tracemode_command_update,
1220 &tracemode);
1221 break;
1222 default:
1223 return ERROR_COMMAND_SYNTAX_ERROR;
1224 }
1225
1226 /**
1227 * todo: fail if parameters were invalid for this hardware,
1228 * or couldn't be written; display actual hardware state...
1229 */
1230
1231 command_print(CMD_CTX, "current tracemode configuration:");
1232
1233 switch (tracemode & ETM_CTRL_TRACE_MASK) {
1234 default:
1235 command_print(CMD_CTX, "data tracing: none");
1236 break;
1237 case ETM_CTRL_TRACE_DATA:
1238 command_print(CMD_CTX, "data tracing: data only");
1239 break;
1240 case ETM_CTRL_TRACE_ADDR:
1241 command_print(CMD_CTX, "data tracing: address only");
1242 break;
1243 case ETM_CTRL_TRACE_DATA | ETM_CTRL_TRACE_ADDR:
1244 command_print(CMD_CTX, "data tracing: address and data");
1245 break;
1246 }
1247
1248 switch (tracemode & ETM_CTRL_CONTEXTID_MASK) {
1249 case ETM_CTRL_CONTEXTID_NONE:
1250 command_print(CMD_CTX, "contextid tracing: none");
1251 break;
1252 case ETM_CTRL_CONTEXTID_8:
1253 command_print(CMD_CTX, "contextid tracing: 8 bit");
1254 break;
1255 case ETM_CTRL_CONTEXTID_16:
1256 command_print(CMD_CTX, "contextid tracing: 16 bit");
1257 break;
1258 case ETM_CTRL_CONTEXTID_32:
1259 command_print(CMD_CTX, "contextid tracing: 32 bit");
1260 break;
1261 }
1262
1263 if (tracemode & ETM_CTRL_CYCLE_ACCURATE)
1264 command_print(CMD_CTX, "cycle-accurate tracing enabled");
1265 else
1266 command_print(CMD_CTX, "cycle-accurate tracing disabled");
1267
1268 if (tracemode & ETM_CTRL_BRANCH_OUTPUT)
1269 command_print(CMD_CTX, "full branch address output enabled");
1270 else
1271 command_print(CMD_CTX, "full branch address output disabled");
1272
1273 #define TRACEMODE_MASK ( \
1274 ETM_CTRL_CONTEXTID_MASK \
1275 | ETM_CTRL_BRANCH_OUTPUT \
1276 | ETM_CTRL_CYCLE_ACCURATE \
1277 | ETM_CTRL_TRACE_MASK \
1278 )
1279
1280 /* only update ETM_CTRL register if tracemode changed */
1281 if ((etm->control & TRACEMODE_MASK) != tracemode) {
1282 struct reg *etm_ctrl_reg;
1283
1284 etm_ctrl_reg = etm_reg_lookup(etm, ETM_CTRL);
1285 if (!etm_ctrl_reg)
1286 return ERROR_FAIL;
1287
1288 etm->control &= ~TRACEMODE_MASK;
1289 etm->control |= tracemode & TRACEMODE_MASK;
1290
1291 buf_set_u32(etm_ctrl_reg->value, 0, 32, etm->control);
1292 etm_store_reg(etm_ctrl_reg);
1293
1294 /* invalidate old trace data */
1295 etm->capture_status = TRACE_IDLE;
1296 if (etm->trace_depth > 0) {
1297 free(etm->trace_data);
1298 etm->trace_data = NULL;
1299 }
1300 etm->trace_depth = 0;
1301 }
1302
1303 #undef TRACEMODE_MASK
1304
1305 return ERROR_OK;
1306 }
1307
1308 COMMAND_HANDLER(handle_etm_config_command)
1309 {
1310 struct target *target;
1311 struct arm *arm;
1312 uint32_t portmode = 0x0;
1313 struct etm_context *etm_ctx;
1314 int i;
1315
1316 if (CMD_ARGC != 5)
1317 return ERROR_COMMAND_SYNTAX_ERROR;
1318
1319 target = get_target(CMD_ARGV[0]);
1320 if (!target) {
1321 LOG_ERROR("target '%s' not defined", CMD_ARGV[0]);
1322 return ERROR_FAIL;
1323 }
1324
1325 arm = target_to_arm(target);
1326 if (!is_arm(arm)) {
1327 command_print(CMD_CTX, "target '%s' is '%s'; not an ARM",
1328 target_name(target),
1329 target_type_name(target));
1330 return ERROR_FAIL;
1331 }
1332
1333 /* FIXME for ETMv3.0 and above -- and we don't yet know what ETM
1334 * version we'll be using!! -- so we can't know how to validate
1335 * params yet. "etm config" should likely be *AFTER* hookup...
1336 *
1337 * - Many more widths might be supported ... and we can easily
1338 * check whether our setting "took".
1339 *
1340 * - The "clock" and "mode" bits are interpreted differently.
1341 * See ARM IHI 0014O table 2-17 for the old behavior, and
1342 * table 2-18 for the new. With ETB it's best to specify
1343 * "normal full" ...
1344 */
1345 uint8_t port_width;
1346 COMMAND_PARSE_NUMBER(u8, CMD_ARGV[1], port_width);
1347 switch (port_width) {
1348 /* before ETMv3.0 */
1349 case 4:
1350 portmode |= ETM_PORT_4BIT;
1351 break;
1352 case 8:
1353 portmode |= ETM_PORT_8BIT;
1354 break;
1355 case 16:
1356 portmode |= ETM_PORT_16BIT;
1357 break;
1358 /* ETMv3.0 and later*/
1359 case 24:
1360 portmode |= ETM_PORT_24BIT;
1361 break;
1362 case 32:
1363 portmode |= ETM_PORT_32BIT;
1364 break;
1365 case 48:
1366 portmode |= ETM_PORT_48BIT;
1367 break;
1368 case 64:
1369 portmode |= ETM_PORT_64BIT;
1370 break;
1371 case 1:
1372 portmode |= ETM_PORT_1BIT;
1373 break;
1374 case 2:
1375 portmode |= ETM_PORT_2BIT;
1376 break;
1377 default:
1378 command_print(CMD_CTX,
1379 "unsupported ETM port width '%s'", CMD_ARGV[1]);
1380 return ERROR_FAIL;
1381 }
1382
1383 if (strcmp("normal", CMD_ARGV[2]) == 0)
1384 portmode |= ETM_PORT_NORMAL;
1385 else if (strcmp("multiplexed", CMD_ARGV[2]) == 0)
1386 portmode |= ETM_PORT_MUXED;
1387 else if (strcmp("demultiplexed", CMD_ARGV[2]) == 0)
1388 portmode |= ETM_PORT_DEMUXED;
1389 else {
1390 command_print(CMD_CTX,
1391 "unsupported ETM port mode '%s', must be 'normal', 'multiplexed' or 'demultiplexed'",
1392 CMD_ARGV[2]);
1393 return ERROR_FAIL;
1394 }
1395
1396 if (strcmp("half", CMD_ARGV[3]) == 0)
1397 portmode |= ETM_PORT_HALF_CLOCK;
1398 else if (strcmp("full", CMD_ARGV[3]) == 0)
1399 portmode |= ETM_PORT_FULL_CLOCK;
1400 else {
1401 command_print(CMD_CTX,
1402 "unsupported ETM port clocking '%s', must be 'full' or 'half'",
1403 CMD_ARGV[3]);
1404 return ERROR_FAIL;
1405 }
1406
1407 etm_ctx = calloc(1, sizeof(struct etm_context));
1408 if (!etm_ctx) {
1409 LOG_DEBUG("out of memory");
1410 return ERROR_FAIL;
1411 }
1412
1413 for (i = 0; etm_capture_drivers[i]; i++) {
1414 if (strcmp(CMD_ARGV[4], etm_capture_drivers[i]->name) == 0) {
1415 int retval = register_commands(CMD_CTX, NULL,
1416 etm_capture_drivers[i]->commands);
1417 if (ERROR_OK != retval) {
1418 free(etm_ctx);
1419 return retval;
1420 }
1421
1422 etm_ctx->capture_driver = etm_capture_drivers[i];
1423
1424 break;
1425 }
1426 }
1427
1428 if (!etm_capture_drivers[i]) {
1429 /* no supported capture driver found, don't register an ETM */
1430 free(etm_ctx);
1431 LOG_ERROR("trace capture driver '%s' not found", CMD_ARGV[4]);
1432 return ERROR_FAIL;
1433 }
1434
1435 etm_ctx->target = target;
1436 etm_ctx->trace_data = NULL;
1437 etm_ctx->control = portmode;
1438 etm_ctx->core_state = ARM_STATE_ARM;
1439
1440 arm->etm = etm_ctx;
1441
1442 return etm_register_user_commands(CMD_CTX);
1443 }
1444
1445 COMMAND_HANDLER(handle_etm_info_command)
1446 {
1447 struct target *target;
1448 struct arm *arm;
1449 struct etm_context *etm;
1450 struct reg *etm_sys_config_reg;
1451 int max_port_size;
1452 uint32_t config;
1453
1454 target = get_current_target(CMD_CTX);
1455 arm = target_to_arm(target);
1456 if (!is_arm(arm)) {
1457 command_print(CMD_CTX, "ETM: current target isn't an ARM");
1458 return ERROR_FAIL;
1459 }
1460
1461 etm = arm->etm;
1462 if (!etm) {
1463 command_print(CMD_CTX, "current target doesn't have an ETM configured");
1464 return ERROR_FAIL;
1465 }
1466
1467 command_print(CMD_CTX, "ETM v%d.%d",
1468 etm->bcd_vers >> 4, etm->bcd_vers & 0xf);
1469 command_print(CMD_CTX, "pairs of address comparators: %i",
1470 (int) (etm->config >> 0) & 0x0f);
1471 command_print(CMD_CTX, "data comparators: %i",
1472 (int) (etm->config >> 4) & 0x0f);
1473 command_print(CMD_CTX, "memory map decoders: %i",
1474 (int) (etm->config >> 8) & 0x1f);
1475 command_print(CMD_CTX, "number of counters: %i",
1476 (int) (etm->config >> 13) & 0x07);
1477 command_print(CMD_CTX, "sequencer %spresent",
1478 (int) (etm->config & (1 << 16)) ? "" : "not ");
1479 command_print(CMD_CTX, "number of ext. inputs: %i",
1480 (int) (etm->config >> 17) & 0x07);
1481 command_print(CMD_CTX, "number of ext. outputs: %i",
1482 (int) (etm->config >> 20) & 0x07);
1483 command_print(CMD_CTX, "FIFO full %spresent",
1484 (int) (etm->config & (1 << 23)) ? "" : "not ");
1485 if (etm->bcd_vers < 0x20)
1486 command_print(CMD_CTX, "protocol version: %i",
1487 (int) (etm->config >> 28) & 0x07);
1488 else {
1489 command_print(CMD_CTX,
1490 "coprocessor and memory access %ssupported",
1491 (etm->config & (1 << 26)) ? "" : "not ");
1492 command_print(CMD_CTX, "trace start/stop %spresent",
1493 (etm->config & (1 << 26)) ? "" : "not ");
1494 command_print(CMD_CTX, "number of context comparators: %i",
1495 (int) (etm->config >> 24) & 0x03);
1496 }
1497
1498 /* SYS_CONFIG isn't present before ETMv1.2 */
1499 etm_sys_config_reg = etm_reg_lookup(etm, ETM_SYS_CONFIG);
1500 if (!etm_sys_config_reg)
1501 return ERROR_OK;
1502
1503 etm_get_reg(etm_sys_config_reg);
1504 config = buf_get_u32(etm_sys_config_reg->value, 0, 32);
1505
1506 LOG_DEBUG("ETM SYS CONFIG %08x", (unsigned) config);
1507
1508 max_port_size = config & 0x7;
1509 if (etm->bcd_vers >= 0x30)
1510 max_port_size |= (config >> 6) & 0x08;
1511 switch (max_port_size) {
1512 /* before ETMv3.0 */
1513 case 0:
1514 max_port_size = 4;
1515 break;
1516 case 1:
1517 max_port_size = 8;
1518 break;
1519 case 2:
1520 max_port_size = 16;
1521 break;
1522 /* ETMv3.0 and later*/
1523 case 3:
1524 max_port_size = 24;
1525 break;
1526 case 4:
1527 max_port_size = 32;
1528 break;
1529 case 5:
1530 max_port_size = 48;
1531 break;
1532 case 6:
1533 max_port_size = 64;
1534 break;
1535 case 8:
1536 max_port_size = 1;
1537 break;
1538 case 9:
1539 max_port_size = 2;
1540 break;
1541 default:
1542 LOG_ERROR("Illegal max_port_size");
1543 return ERROR_FAIL;
1544 }
1545 command_print(CMD_CTX, "max. port size: %i", max_port_size);
1546
1547 if (etm->bcd_vers < 0x30) {
1548 command_print(CMD_CTX, "half-rate clocking %ssupported",
1549 (config & (1 << 3)) ? "" : "not ");
1550 command_print(CMD_CTX, "full-rate clocking %ssupported",
1551 (config & (1 << 4)) ? "" : "not ");
1552 command_print(CMD_CTX, "normal trace format %ssupported",
1553 (config & (1 << 5)) ? "" : "not ");
1554 command_print(CMD_CTX, "multiplex trace format %ssupported",
1555 (config & (1 << 6)) ? "" : "not ");
1556 command_print(CMD_CTX, "demultiplex trace format %ssupported",
1557 (config & (1 << 7)) ? "" : "not ");
1558 } else {
1559 /* REVISIT show which size and format are selected ... */
1560 command_print(CMD_CTX, "current port size %ssupported",
1561 (config & (1 << 10)) ? "" : "not ");
1562 command_print(CMD_CTX, "current trace format %ssupported",
1563 (config & (1 << 11)) ? "" : "not ");
1564 }
1565 if (etm->bcd_vers >= 0x21)
1566 command_print(CMD_CTX, "fetch comparisons %ssupported",
1567 (config & (1 << 17)) ? "not " : "");
1568 command_print(CMD_CTX, "FIFO full %ssupported",
1569 (config & (1 << 8)) ? "" : "not ");
1570
1571 return ERROR_OK;
1572 }
1573
1574 COMMAND_HANDLER(handle_etm_status_command)
1575 {
1576 struct target *target;
1577 struct arm *arm;
1578 struct etm_context *etm;
1579 trace_status_t trace_status;
1580
1581 target = get_current_target(CMD_CTX);
1582 arm = target_to_arm(target);
1583 if (!is_arm(arm)) {
1584 command_print(CMD_CTX, "ETM: current target isn't an ARM");
1585 return ERROR_FAIL;
1586 }
1587
1588 etm = arm->etm;
1589 if (!etm) {
1590 command_print(CMD_CTX, "current target doesn't have an ETM configured");
1591 return ERROR_FAIL;
1592 }
1593
1594 /* ETM status */
1595 if (etm->bcd_vers >= 0x11) {
1596 struct reg *reg;
1597
1598 reg = etm_reg_lookup(etm, ETM_STATUS);
1599 if (!reg)
1600 return ERROR_FAIL;
1601 if (etm_get_reg(reg) == ERROR_OK) {
1602 unsigned s = buf_get_u32(reg->value, 0, reg->size);
1603
1604 command_print(CMD_CTX, "etm: %s%s%s%s",
1605 /* bit(1) == progbit */
1606 (etm->bcd_vers >= 0x12)
1607 ? ((s & (1 << 1))
1608 ? "disabled" : "enabled")
1609 : "?",
1610 ((s & (1 << 3)) && etm->bcd_vers >= 0x31)
1611 ? " triggered" : "",
1612 ((s & (1 << 2)) && etm->bcd_vers >= 0x12)
1613 ? " start/stop" : "",
1614 ((s & (1 << 0)) && etm->bcd_vers >= 0x11)
1615 ? " untraced-overflow" : "");
1616 } /* else ignore and try showing trace port status */
1617 }
1618
1619 /* Trace Port Driver status */
1620 trace_status = etm->capture_driver->status(etm);
1621 if (trace_status == TRACE_IDLE)
1622 command_print(CMD_CTX, "%s: idle", etm->capture_driver->name);
1623 else {
1624 static char *completed = " completed";
1625 static char *running = " is running";
1626 static char *overflowed = ", overflowed";
1627 static char *triggered = ", triggered";
1628
1629 command_print(CMD_CTX, "%s: trace collection%s%s%s",
1630 etm->capture_driver->name,
1631 (trace_status & TRACE_RUNNING) ? running : completed,
1632 (trace_status & TRACE_OVERFLOWED) ? overflowed : "",
1633 (trace_status & TRACE_TRIGGERED) ? triggered : "");
1634
1635 if (etm->trace_depth > 0) {
1636 command_print(CMD_CTX, "%i frames of trace data read",
1637 (int)(etm->trace_depth));
1638 }
1639 }
1640
1641 return ERROR_OK;
1642 }
1643
1644 COMMAND_HANDLER(handle_etm_image_command)
1645 {
1646 struct target *target;
1647 struct arm *arm;
1648 struct etm_context *etm_ctx;
1649
1650 if (CMD_ARGC < 1)
1651 return ERROR_COMMAND_SYNTAX_ERROR;
1652
1653 target = get_current_target(CMD_CTX);
1654 arm = target_to_arm(target);
1655 if (!is_arm(arm)) {
1656 command_print(CMD_CTX, "ETM: current target isn't an ARM");
1657 return ERROR_FAIL;
1658 }
1659
1660 etm_ctx = arm->etm;
1661 if (!etm_ctx) {
1662 command_print(CMD_CTX, "current target doesn't have an ETM configured");
1663 return ERROR_FAIL;
1664 }
1665
1666 if (etm_ctx->image) {
1667 image_close(etm_ctx->image);
1668 free(etm_ctx->image);
1669 command_print(CMD_CTX, "previously loaded image found and closed");
1670 }
1671
1672 etm_ctx->image = malloc(sizeof(struct image));
1673 etm_ctx->image->base_address_set = 0;
1674 etm_ctx->image->start_address_set = 0;
1675
1676 /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
1677 if (CMD_ARGC >= 2) {
1678 etm_ctx->image->base_address_set = 1;
1679 COMMAND_PARSE_NUMBER(llong, CMD_ARGV[1], etm_ctx->image->base_address);
1680 } else
1681 etm_ctx->image->base_address_set = 0;
1682
1683 if (image_open(etm_ctx->image, CMD_ARGV[0],
1684 (CMD_ARGC >= 3) ? CMD_ARGV[2] : NULL) != ERROR_OK) {
1685 free(etm_ctx->image);
1686 etm_ctx->image = NULL;
1687 return ERROR_FAIL;
1688 }
1689
1690 return ERROR_OK;
1691 }
1692
1693 COMMAND_HANDLER(handle_etm_dump_command)
1694 {
1695 struct fileio file;
1696 struct target *target;
1697 struct arm *arm;
1698 struct etm_context *etm_ctx;
1699 uint32_t i;
1700
1701 if (CMD_ARGC != 1)
1702 return ERROR_COMMAND_SYNTAX_ERROR;
1703
1704 target = get_current_target(CMD_CTX);
1705 arm = target_to_arm(target);
1706 if (!is_arm(arm)) {
1707 command_print(CMD_CTX, "ETM: current target isn't an ARM");
1708 return ERROR_FAIL;
1709 }
1710
1711 etm_ctx = arm->etm;
1712 if (!etm_ctx) {
1713 command_print(CMD_CTX, "current target doesn't have an ETM configured");
1714 return ERROR_FAIL;
1715 }
1716
1717 if (etm_ctx->capture_driver->status == TRACE_IDLE) {
1718 command_print(CMD_CTX, "trace capture wasn't enabled, no trace data captured");
1719 return ERROR_OK;
1720 }
1721
1722 if (etm_ctx->capture_driver->status(etm_ctx) & TRACE_RUNNING) {
1723 /* TODO: if on-the-fly capture is to be supported, this needs to be changed */
1724 command_print(CMD_CTX, "trace capture not completed");
1725 return ERROR_FAIL;
1726 }
1727
1728 /* read the trace data if it wasn't read already */
1729 if (etm_ctx->trace_depth == 0)
1730 etm_ctx->capture_driver->read_trace(etm_ctx);
1731
1732 if (fileio_open(&file, CMD_ARGV[0], FILEIO_WRITE, FILEIO_BINARY) != ERROR_OK)
1733 return ERROR_FAIL;
1734
1735 fileio_write_u32(&file, etm_ctx->capture_status);
1736 fileio_write_u32(&file, etm_ctx->control);
1737 fileio_write_u32(&file, etm_ctx->trace_depth);
1738
1739 for (i = 0; i < etm_ctx->trace_depth; i++) {
1740 fileio_write_u32(&file, etm_ctx->trace_data[i].pipestat);
1741 fileio_write_u32(&file, etm_ctx->trace_data[i].packet);
1742 fileio_write_u32(&file, etm_ctx->trace_data[i].flags);
1743 }
1744
1745 fileio_close(&file);
1746
1747 return ERROR_OK;
1748 }
1749
1750 COMMAND_HANDLER(handle_etm_load_command)
1751 {
1752 struct fileio file;
1753 struct target *target;
1754 struct arm *arm;
1755 struct etm_context *etm_ctx;
1756 uint32_t i;
1757
1758 if (CMD_ARGC != 1)
1759 return ERROR_COMMAND_SYNTAX_ERROR;
1760
1761 target = get_current_target(CMD_CTX);
1762 arm = target_to_arm(target);
1763 if (!is_arm(arm)) {
1764 command_print(CMD_CTX, "ETM: current target isn't an ARM");
1765 return ERROR_FAIL;
1766 }
1767
1768 etm_ctx = arm->etm;
1769 if (!etm_ctx) {
1770 command_print(CMD_CTX, "current target doesn't have an ETM configured");
1771 return ERROR_FAIL;
1772 }
1773
1774 if (etm_ctx->capture_driver->status(etm_ctx) & TRACE_RUNNING) {
1775 command_print(CMD_CTX, "trace capture running, stop first");
1776 return ERROR_FAIL;
1777 }
1778
1779 if (fileio_open(&file, CMD_ARGV[0], FILEIO_READ, FILEIO_BINARY) != ERROR_OK)
1780 return ERROR_FAIL;
1781
1782 int filesize;
1783 int retval = fileio_size(&file, &filesize);
1784 if (retval != ERROR_OK) {
1785 fileio_close(&file);
1786 return retval;
1787 }
1788
1789 if (filesize % 4) {
1790 command_print(CMD_CTX, "size isn't a multiple of 4, no valid trace data");
1791 fileio_close(&file);
1792 return ERROR_FAIL;
1793 }
1794
1795 if (etm_ctx->trace_depth > 0) {
1796 free(etm_ctx->trace_data);
1797 etm_ctx->trace_data = NULL;
1798 }
1799
1800 {
1801 uint32_t tmp;
1802 fileio_read_u32(&file, &tmp); etm_ctx->capture_status = tmp;
1803 fileio_read_u32(&file, &tmp); etm_ctx->control = tmp;
1804 fileio_read_u32(&file, &etm_ctx->trace_depth);
1805 }
1806 etm_ctx->trace_data = malloc(sizeof(struct etmv1_trace_data) * etm_ctx->trace_depth);
1807 if (etm_ctx->trace_data == NULL) {
1808 command_print(CMD_CTX, "not enough memory to perform operation");
1809 fileio_close(&file);
1810 return ERROR_FAIL;
1811 }
1812
1813 for (i = 0; i < etm_ctx->trace_depth; i++) {
1814 uint32_t pipestat, packet, flags;
1815 fileio_read_u32(&file, &pipestat);
1816 fileio_read_u32(&file, &packet);
1817 fileio_read_u32(&file, &flags);
1818 etm_ctx->trace_data[i].pipestat = pipestat & 0xff;
1819 etm_ctx->trace_data[i].packet = packet & 0xffff;
1820 etm_ctx->trace_data[i].flags = flags;
1821 }
1822
1823 fileio_close(&file);
1824
1825 return ERROR_OK;
1826 }
1827
1828 COMMAND_HANDLER(handle_etm_start_command)
1829 {
1830 struct target *target;
1831 struct arm *arm;
1832 struct etm_context *etm_ctx;
1833 struct reg *etm_ctrl_reg;
1834
1835 target = get_current_target(CMD_CTX);
1836 arm = target_to_arm(target);
1837 if (!is_arm(arm)) {
1838 command_print(CMD_CTX, "ETM: current target isn't an ARM");
1839 return ERROR_FAIL;
1840 }
1841
1842 etm_ctx = arm->etm;
1843 if (!etm_ctx) {
1844 command_print(CMD_CTX, "current target doesn't have an ETM configured");
1845 return ERROR_FAIL;
1846 }
1847
1848 /* invalidate old tracing data */
1849 etm_ctx->capture_status = TRACE_IDLE;
1850 if (etm_ctx->trace_depth > 0) {
1851 free(etm_ctx->trace_data);
1852 etm_ctx->trace_data = NULL;
1853 }
1854 etm_ctx->trace_depth = 0;
1855
1856 etm_ctrl_reg = etm_reg_lookup(etm_ctx, ETM_CTRL);
1857 if (!etm_ctrl_reg)
1858 return ERROR_FAIL;
1859
1860 etm_get_reg(etm_ctrl_reg);
1861
1862 /* Clear programming bit (10), set port selection bit (11) */
1863 buf_set_u32(etm_ctrl_reg->value, 10, 2, 0x2);
1864
1865 etm_store_reg(etm_ctrl_reg);
1866 jtag_execute_queue();
1867
1868 etm_ctx->capture_driver->start_capture(etm_ctx);
1869
1870 return ERROR_OK;
1871 }
1872
1873 COMMAND_HANDLER(handle_etm_stop_command)
1874 {
1875 struct target *target;
1876 struct arm *arm;
1877 struct etm_context *etm_ctx;
1878 struct reg *etm_ctrl_reg;
1879
1880 target = get_current_target(CMD_CTX);
1881 arm = target_to_arm(target);
1882 if (!is_arm(arm)) {
1883 command_print(CMD_CTX, "ETM: current target isn't an ARM");
1884 return ERROR_FAIL;
1885 }
1886
1887 etm_ctx = arm->etm;
1888 if (!etm_ctx) {
1889 command_print(CMD_CTX, "current target doesn't have an ETM configured");
1890 return ERROR_FAIL;
1891 }
1892
1893 etm_ctrl_reg = etm_reg_lookup(etm_ctx, ETM_CTRL);
1894 if (!etm_ctrl_reg)
1895 return ERROR_FAIL;
1896
1897 etm_get_reg(etm_ctrl_reg);
1898
1899 /* Set programming bit (10), clear port selection bit (11) */
1900 buf_set_u32(etm_ctrl_reg->value, 10, 2, 0x1);
1901
1902 etm_store_reg(etm_ctrl_reg);
1903 jtag_execute_queue();
1904
1905 etm_ctx->capture_driver->stop_capture(etm_ctx);
1906
1907 return ERROR_OK;
1908 }
1909
1910 COMMAND_HANDLER(handle_etm_trigger_debug_command)
1911 {
1912 struct target *target;
1913 struct arm *arm;
1914 struct etm_context *etm;
1915
1916 target = get_current_target(CMD_CTX);
1917 arm = target_to_arm(target);
1918 if (!is_arm(arm)) {
1919 command_print(CMD_CTX, "ETM: %s isn't an ARM",
1920 target_name(target));
1921 return ERROR_FAIL;
1922 }
1923
1924 etm = arm->etm;
1925 if (!etm) {
1926 command_print(CMD_CTX, "ETM: no ETM configured for %s",
1927 target_name(target));
1928 return ERROR_FAIL;
1929 }
1930
1931 if (CMD_ARGC == 1) {
1932 struct reg *etm_ctrl_reg;
1933 bool dbgrq;
1934
1935 etm_ctrl_reg = etm_reg_lookup(etm, ETM_CTRL);
1936 if (!etm_ctrl_reg)
1937 return ERROR_FAIL;
1938
1939 COMMAND_PARSE_ENABLE(CMD_ARGV[0], dbgrq);
1940 if (dbgrq)
1941 etm->control |= ETM_CTRL_DBGRQ;
1942 else
1943 etm->control &= ~ETM_CTRL_DBGRQ;
1944
1945 /* etm->control will be written to hardware
1946 * the next time an "etm start" is issued.
1947 */
1948 buf_set_u32(etm_ctrl_reg->value, 0, 32, etm->control);
1949 }
1950
1951 command_print(CMD_CTX, "ETM: %s debug halt",
1952 (etm->control & ETM_CTRL_DBGRQ)
1953 ? "triggers"
1954 : "does not trigger");
1955 return ERROR_OK;
1956 }
1957
1958 COMMAND_HANDLER(handle_etm_analyze_command)
1959 {
1960 struct target *target;
1961 struct arm *arm;
1962 struct etm_context *etm_ctx;
1963 int retval;
1964
1965 target = get_current_target(CMD_CTX);
1966 arm = target_to_arm(target);
1967 if (!is_arm(arm)) {
1968 command_print(CMD_CTX, "ETM: current target isn't an ARM");
1969 return ERROR_FAIL;
1970 }
1971
1972 etm_ctx = arm->etm;
1973 if (!etm_ctx) {
1974 command_print(CMD_CTX, "current target doesn't have an ETM configured");
1975 return ERROR_FAIL;
1976 }
1977
1978 retval = etmv1_analyze_trace(etm_ctx, CMD_CTX);
1979 if (retval != ERROR_OK) {
1980 /* FIX! error should be reported inside etmv1_analyze_trace() */
1981 switch (retval) {
1982 case ERROR_ETM_ANALYSIS_FAILED:
1983 command_print(CMD_CTX,
1984 "further analysis failed (corrupted trace data or just end of data");
1985 break;
1986 case ERROR_TRACE_INSTRUCTION_UNAVAILABLE:
1987 command_print(CMD_CTX,
1988 "no instruction for current address available, analysis aborted");
1989 break;
1990 case ERROR_TRACE_IMAGE_UNAVAILABLE:
1991 command_print(CMD_CTX, "no image available for trace analysis");
1992 break;
1993 default:
1994 command_print(CMD_CTX, "unknown error");
1995 }
1996 }
1997
1998 return retval;
1999 }
2000
2001 static const struct command_registration etm_config_command_handlers[] = {
2002 {
2003 /* NOTE: with ADIv5, ETMs are accessed by DAP operations,
2004 * possibly over SWD, not JTAG scanchain 6 of 'target'.
2005 *
2006 * Also, these parameters don't match ETM v3+ modules...
2007 */
2008 .name = "config",
2009 .handler = handle_etm_config_command,
2010 .mode = COMMAND_CONFIG,
2011 .help = "Set up ETM output port.",
2012 .usage = "target port_width port_mode clocking capture_driver",
2013 },
2014 COMMAND_REGISTRATION_DONE
2015 };
2016 const struct command_registration etm_command_handlers[] = {
2017 {
2018 .name = "etm",
2019 .mode = COMMAND_ANY,
2020 .help = "Emebdded Trace Macrocell command group",
2021 .usage = "",
2022 .chain = etm_config_command_handlers,
2023 },
2024 COMMAND_REGISTRATION_DONE
2025 };
2026
2027 static const struct command_registration etm_exec_command_handlers[] = {
2028 {
2029 .name = "tracemode",
2030 .handler = handle_etm_tracemode_command,
2031 .mode = COMMAND_EXEC,
2032 .help = "configure/display trace mode",
2033 .usage = "('none'|'data'|'address'|'all') "
2034 "context_id_bits "
2035 "['enable'|'disable'] "
2036 "['enable'|'disable']",
2037 },
2038 {
2039 .name = "info",
2040 .handler = handle_etm_info_command,
2041 .mode = COMMAND_EXEC,
2042 .usage = "",
2043 .help = "display info about the current target's ETM",
2044 },
2045 {
2046 .name = "status",
2047 .handler = handle_etm_status_command,
2048 .mode = COMMAND_EXEC,
2049 .usage = "",
2050 .help = "display current target's ETM status",
2051 },
2052 {
2053 .name = "start",
2054 .handler = handle_etm_start_command,
2055 .mode = COMMAND_EXEC,
2056 .usage = "",
2057 .help = "start ETM trace collection",
2058 },
2059 {
2060 .name = "stop",
2061 .handler = handle_etm_stop_command,
2062 .mode = COMMAND_EXEC,
2063 .usage = "",
2064 .help = "stop ETM trace collection",
2065 },
2066 {
2067 .name = "trigger_debug",
2068 .handler = handle_etm_trigger_debug_command,
2069 .mode = COMMAND_EXEC,
2070 .help = "enable/disable debug entry on trigger",
2071 .usage = "['enable'|'disable']",
2072 },
2073 {
2074 .name = "analyze",
2075 .handler = handle_etm_analyze_command,
2076 .mode = COMMAND_EXEC,
2077 .usage = "",
2078 .help = "analyze collected ETM trace",
2079 },
2080 {
2081 .name = "image",
2082 .handler = handle_etm_image_command,
2083 .mode = COMMAND_EXEC,
2084 .help = "load image from file with optional offset",
2085 .usage = "<file> [base address] [type]",
2086 },
2087 {
2088 .name = "dump",
2089 .handler = handle_etm_dump_command,
2090 .mode = COMMAND_EXEC,
2091 .help = "dump captured trace data to file",
2092 .usage = "filename",
2093 },
2094 {
2095 .name = "load",
2096 .handler = handle_etm_load_command,
2097 .mode = COMMAND_EXEC,
2098 .usage = "",
2099 .help = "load trace data for analysis <file>",
2100 },
2101 COMMAND_REGISTRATION_DONE
2102 };
2103
2104 static int etm_register_user_commands(struct command_context *cmd_ctx)
2105 {
2106 struct command *etm_cmd = command_find_in_context(cmd_ctx, "etm");
2107 return register_commands(cmd_ctx, etm_cmd, etm_exec_command_handlers);
2108 }
Official OpenOCD Mirror