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ETM: start cleaning up ETM_CTRL bit handling
[openocd/genbsdl.git] / src / target / etm.c
blobaaa02197a4ee466ad4351deb79948883b34fb10e
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 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 bcd_vers = 0x20;
318 LOG_WARNING("ETMv2+ support is incomplete");
319
320 /* REVISIT more registers may exist; they may now be
321 * readable; more register bits have defined meanings;
322 * don't presume trace start/stop support is present;
323 * and include any context ID comparator registers.
324 */
325 etm_reg_add(0x20, jtag_info, reg_cache, arch_info,
326 etm_core + 1, 1);
327 etm_get_reg(reg_list + 1);
328 etm_ctx->id = buf_get_u32(
329 (void *)&arch_info[1].value, 0, 32);
330 LOG_DEBUG("ETM ID: %08x", (unsigned) etm_ctx->id);
331 bcd_vers = 0x10 + (((etm_ctx->id) >> 4) & 0xff);
332
333 } else {
334 switch (config >> 28) {
335 case 7:
336 case 5:
337 case 3:
338 bcd_vers = 0x13;
339 break;
340 case 4:
341 case 2:
342 bcd_vers = 0x12;
343 break;
344 case 1:
345 bcd_vers = 0x11;
346 break;
347 case 0:
348 bcd_vers = 0x10;
349 break;
350 default:
351 LOG_WARNING("Bad ETMv1 protocol %d", config >> 28);
352 goto fail;
353 }
354 }
355 etm_ctx->bcd_vers = bcd_vers;
356 LOG_INFO("ETM v%d.%d", bcd_vers >> 4, bcd_vers & 0xf);
357
358 etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info,
359 etm_basic, ARRAY_SIZE(etm_basic));
360
361 /* address and data comparators; counters; outputs */
362 etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info,
363 etm_addr_comp, 4 * (0x0f & (config >> 0)));
364 etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info,
365 etm_data_comp, 2 * (0x0f & (config >> 4)));
366 etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info,
367 etm_counters, 4 * (0x07 & (config >> 13)));
368 etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info,
369 etm_outputs, (0x07 & (config >> 20)));
370
371 /* FIFOFULL presence is optional
372 * REVISIT for ETMv1.2 and later, don't bother adding this
373 * unless ETM_SYS_CONFIG says it's also *supported* ...
374 */
375 if (config & (1 << 23))
376 etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info,
377 etm_fifofull, ARRAY_SIZE(etm_fifofull));
378
379 /* sequencer is optional (for state-dependant triggering) */
380 if (config & (1 << 16))
381 etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info,
382 etm_sequencer, ARRAY_SIZE(etm_sequencer));
383
384 /* REVISIT could realloc and likely save half the memory
385 * in the two chunks we allocated...
386 */
387
388 /* the ETM might have an ETB connected */
389 if (strcmp(etm_ctx->capture_driver->name, "etb") == 0)
390 {
391 struct etb *etb = etm_ctx->capture_driver_priv;
392
393 if (!etb)
394 {
395 LOG_ERROR("etb selected as etm capture driver, but no ETB configured");
396 goto fail;
397 }
398
399 reg_cache->next = etb_build_reg_cache(etb);
400
401 etb->reg_cache = reg_cache->next;
402 }
403
404 etm_ctx->reg_cache = reg_cache;
405 return reg_cache;
406
407 fail:
408 free(reg_cache);
409 free(reg_list);
410 free(arch_info);
411 return NULL;
412 }
413
414 static int etm_read_reg(struct reg *reg)
415 {
416 return etm_read_reg_w_check(reg, NULL, NULL);
417 }
418
419 static int etm_store_reg(struct reg *reg)
420 {
421 return etm_write_reg(reg, buf_get_u32(reg->value, 0, reg->size));
422 }
423
424 int etm_setup(struct target *target)
425 {
426 int retval;
427 uint32_t etm_ctrl_value;
428 struct arm *arm = target_to_arm(target);
429 struct etm_context *etm_ctx = arm->etm;
430 struct reg *etm_ctrl_reg;
431
432 etm_ctrl_reg = etm_reg_lookup(etm_ctx, ETM_CTRL);
433 if (!etm_ctrl_reg)
434 return ERROR_OK;
435
436 /* initialize some ETM control register settings */
437 etm_get_reg(etm_ctrl_reg);
438 etm_ctrl_value = buf_get_u32(etm_ctrl_reg->value, 0, 32);
439
440 /* clear the ETM powerdown bit (0) */
441 etm_ctrl_value &= ~ETM_CTRL_POWERDOWN;
442
443 /* configure port width (21,6:4), mode (13,17:16) and
444 * for older modules clocking (13)
445 */
446 etm_ctrl_value = (etm_ctrl_value
447 & ~ETM_PORT_WIDTH_MASK
448 & ~ETM_PORT_MODE_MASK
449 & ~ETM_PORT_CLOCK_MASK)
450 | etm_ctx->control;
451
452 buf_set_u32(etm_ctrl_reg->value, 0, 32, etm_ctrl_value);
453 etm_store_reg(etm_ctrl_reg);
454
455 if ((retval = jtag_execute_queue()) != ERROR_OK)
456 return retval;
457
458 /* REVISIT for ETMv3.0 and later, read ETM_sys_config to
459 * verify that those width and mode settings are OK ...
460 */
461
462 if ((retval = etm_ctx->capture_driver->init(etm_ctx)) != ERROR_OK)
463 {
464 LOG_ERROR("ETM capture driver initialization failed");
465 return retval;
466 }
467 return ERROR_OK;
468 }
469
470 static int etm_get_reg(struct reg *reg)
471 {
472 int retval;
473
474 if ((retval = etm_read_reg(reg)) != ERROR_OK)
475 {
476 LOG_ERROR("BUG: error scheduling etm register read");
477 return retval;
478 }
479
480 if ((retval = jtag_execute_queue()) != ERROR_OK)
481 {
482 LOG_ERROR("register read failed");
483 return retval;
484 }
485
486 return ERROR_OK;
487 }
488
489 static int etm_read_reg_w_check(struct reg *reg,
490 uint8_t* check_value, uint8_t* check_mask)
491 {
492 struct etm_reg *etm_reg = reg->arch_info;
493 const struct etm_reg_info *r = etm_reg->reg_info;
494 uint8_t reg_addr = r->addr & 0x7f;
495 struct scan_field fields[3];
496
497 if (etm_reg->reg_info->mode == WO) {
498 LOG_ERROR("BUG: can't read write-only register %s", r->name);
499 return ERROR_INVALID_ARGUMENTS;
500 }
501
502 LOG_DEBUG("%s (%u)", r->name, reg_addr);
503
504 jtag_set_end_state(TAP_IDLE);
505 arm_jtag_scann(etm_reg->jtag_info, 0x6);
506 arm_jtag_set_instr(etm_reg->jtag_info, etm_reg->jtag_info->intest_instr, NULL);
507
508 fields[0].tap = etm_reg->jtag_info->tap;
509 fields[0].num_bits = 32;
510 fields[0].out_value = reg->value;
511 fields[0].in_value = NULL;
512 fields[0].check_value = NULL;
513 fields[0].check_mask = NULL;
514
515 fields[1].tap = etm_reg->jtag_info->tap;
516 fields[1].num_bits = 7;
517 fields[1].out_value = malloc(1);
518 buf_set_u32(fields[1].out_value, 0, 7, reg_addr);
519 fields[1].in_value = NULL;
520 fields[1].check_value = NULL;
521 fields[1].check_mask = NULL;
522
523 fields[2].tap = etm_reg->jtag_info->tap;
524 fields[2].num_bits = 1;
525 fields[2].out_value = malloc(1);
526 buf_set_u32(fields[2].out_value, 0, 1, 0);
527 fields[2].in_value = NULL;
528 fields[2].check_value = NULL;
529 fields[2].check_mask = NULL;
530
531 jtag_add_dr_scan(3, fields, jtag_get_end_state());
532
533 fields[0].in_value = reg->value;
534 fields[0].check_value = check_value;
535 fields[0].check_mask = check_mask;
536
537 jtag_add_dr_scan_check(3, fields, jtag_get_end_state());
538
539 free(fields[1].out_value);
540 free(fields[2].out_value);
541
542 return ERROR_OK;
543 }
544
545 static int etm_set_reg(struct reg *reg, uint32_t value)
546 {
547 int retval;
548
549 if ((retval = etm_write_reg(reg, value)) != ERROR_OK)
550 {
551 LOG_ERROR("BUG: error scheduling etm register write");
552 return retval;
553 }
554
555 buf_set_u32(reg->value, 0, reg->size, value);
556 reg->valid = 1;
557 reg->dirty = 0;
558
559 return ERROR_OK;
560 }
561
562 static int etm_set_reg_w_exec(struct reg *reg, uint8_t *buf)
563 {
564 int retval;
565
566 etm_set_reg(reg, buf_get_u32(buf, 0, reg->size));
567
568 if ((retval = jtag_execute_queue()) != ERROR_OK)
569 {
570 LOG_ERROR("register write failed");
571 return retval;
572 }
573 return ERROR_OK;
574 }
575
576 static int etm_write_reg(struct reg *reg, uint32_t value)
577 {
578 struct etm_reg *etm_reg = reg->arch_info;
579 const struct etm_reg_info *r = etm_reg->reg_info;
580 uint8_t reg_addr = r->addr & 0x7f;
581 struct scan_field fields[3];
582
583 if (etm_reg->reg_info->mode == RO) {
584 LOG_ERROR("BUG: can't write read--only register %s", r->name);
585 return ERROR_INVALID_ARGUMENTS;
586 }
587
588 LOG_DEBUG("%s (%u): 0x%8.8" PRIx32 "", r->name, reg_addr, value);
589
590 jtag_set_end_state(TAP_IDLE);
591 arm_jtag_scann(etm_reg->jtag_info, 0x6);
592 arm_jtag_set_instr(etm_reg->jtag_info, etm_reg->jtag_info->intest_instr, NULL);
593
594 fields[0].tap = etm_reg->jtag_info->tap;
595 fields[0].num_bits = 32;
596 uint8_t tmp1[4];
597 fields[0].out_value = tmp1;
598 buf_set_u32(fields[0].out_value, 0, 32, value);
599 fields[0].in_value = NULL;
600
601 fields[1].tap = etm_reg->jtag_info->tap;
602 fields[1].num_bits = 7;
603 uint8_t tmp2;
604 fields[1].out_value = &tmp2;
605 buf_set_u32(fields[1].out_value, 0, 7, reg_addr);
606 fields[1].in_value = NULL;
607
608 fields[2].tap = etm_reg->jtag_info->tap;
609 fields[2].num_bits = 1;
610 uint8_t tmp3;
611 fields[2].out_value = &tmp3;
612 buf_set_u32(fields[2].out_value, 0, 1, 1);
613 fields[2].in_value = NULL;
614
615 jtag_add_dr_scan(3, fields, jtag_get_end_state());
616
617 return ERROR_OK;
618 }
619
620
621 /* ETM trace analysis functionality */
622
623 static struct etm_capture_driver *etm_capture_drivers[] =
624 {
625 &etb_capture_driver,
626 &etm_dummy_capture_driver,
627 #if BUILD_OOCD_TRACE == 1
628 &oocd_trace_capture_driver,
629 #endif
630 NULL
631 };
632
633 static int etm_read_instruction(struct etm_context *ctx, struct arm_instruction *instruction)
634 {
635 int i;
636 int section = -1;
637 size_t size_read;
638 uint32_t opcode;
639 int retval;
640
641 if (!ctx->image)
642 return ERROR_TRACE_IMAGE_UNAVAILABLE;
643
644 /* search for the section the current instruction belongs to */
645 for (i = 0; i < ctx->image->num_sections; i++)
646 {
647 if ((ctx->image->sections[i].base_address <= ctx->current_pc) &&
648 (ctx->image->sections[i].base_address + ctx->image->sections[i].size > ctx->current_pc))
649 {
650 section = i;
651 break;
652 }
653 }
654
655 if (section == -1)
656 {
657 /* current instruction couldn't be found in the image */
658 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
659 }
660
661 if (ctx->core_state == ARM_STATE_ARM)
662 {
663 uint8_t buf[4];
664 if ((retval = image_read_section(ctx->image, section,
665 ctx->current_pc - ctx->image->sections[section].base_address,
666 4, buf, &size_read)) != ERROR_OK)
667 {
668 LOG_ERROR("error while reading instruction: %i", retval);
669 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
670 }
671 opcode = target_buffer_get_u32(ctx->target, buf);
672 arm_evaluate_opcode(opcode, ctx->current_pc, instruction);
673 }
674 else if (ctx->core_state == ARM_STATE_THUMB)
675 {
676 uint8_t buf[2];
677 if ((retval = image_read_section(ctx->image, section,
678 ctx->current_pc - ctx->image->sections[section].base_address,
679 2, buf, &size_read)) != ERROR_OK)
680 {
681 LOG_ERROR("error while reading instruction: %i", retval);
682 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
683 }
684 opcode = target_buffer_get_u16(ctx->target, buf);
685 thumb_evaluate_opcode(opcode, ctx->current_pc, instruction);
686 }
687 else if (ctx->core_state == ARM_STATE_JAZELLE)
688 {
689 LOG_ERROR("BUG: tracing of jazelle code not supported");
690 return ERROR_FAIL;
691 }
692 else
693 {
694 LOG_ERROR("BUG: unknown core state encountered");
695 return ERROR_FAIL;
696 }
697
698 return ERROR_OK;
699 }
700
701 static int etmv1_next_packet(struct etm_context *ctx, uint8_t *packet, int apo)
702 {
703 while (ctx->data_index < ctx->trace_depth)
704 {
705 /* if the caller specified an address packet offset, skip until the
706 * we reach the n-th cycle marked with tracesync */
707 if (apo > 0)
708 {
709 if (ctx->trace_data[ctx->data_index].flags & ETMV1_TRACESYNC_CYCLE)
710 apo--;
711
712 if (apo > 0)
713 {
714 ctx->data_index++;
715 ctx->data_half = 0;
716 }
717 continue;
718 }
719
720 /* no tracedata output during a TD cycle
721 * or in a trigger cycle */
722 if ((ctx->trace_data[ctx->data_index].pipestat == STAT_TD)
723 || (ctx->trace_data[ctx->data_index].flags & ETMV1_TRIGGER_CYCLE))
724 {
725 ctx->data_index++;
726 ctx->data_half = 0;
727 continue;
728 }
729
730 /* FIXME there are more port widths than these... */
731 if ((ctx->control & ETM_PORT_WIDTH_MASK) == ETM_PORT_16BIT)
732 {
733 if (ctx->data_half == 0)
734 {
735 *packet = ctx->trace_data[ctx->data_index].packet & 0xff;
736 ctx->data_half = 1;
737 }
738 else
739 {
740 *packet = (ctx->trace_data[ctx->data_index].packet & 0xff00) >> 8;
741 ctx->data_half = 0;
742 ctx->data_index++;
743 }
744 }
745 else if ((ctx->control & ETM_PORT_WIDTH_MASK) == ETM_PORT_8BIT)
746 {
747 *packet = ctx->trace_data[ctx->data_index].packet & 0xff;
748 ctx->data_index++;
749 }
750 else
751 {
752 /* on a 4-bit port, a packet will be output during two consecutive cycles */
753 if (ctx->data_index > (ctx->trace_depth - 2))
754 return -1;
755
756 *packet = ctx->trace_data[ctx->data_index].packet & 0xf;
757 *packet |= (ctx->trace_data[ctx->data_index + 1].packet & 0xf) << 4;
758 ctx->data_index += 2;
759 }
760
761 return 0;
762 }
763
764 return -1;
765 }
766
767 static int etmv1_branch_address(struct etm_context *ctx)
768 {
769 int retval;
770 uint8_t packet;
771 int shift = 0;
772 int apo;
773 uint32_t i;
774
775 /* quit analysis if less than two cycles are left in the trace
776 * because we can't extract the APO */
777 if (ctx->data_index > (ctx->trace_depth - 2))
778 return -1;
779
780 /* a BE could be output during an APO cycle, skip the current
781 * and continue with the new one */
782 if (ctx->trace_data[ctx->pipe_index + 1].pipestat & 0x4)
783 return 1;
784 if (ctx->trace_data[ctx->pipe_index + 2].pipestat & 0x4)
785 return 2;
786
787 /* address packet offset encoded in the next two cycles' pipestat bits */
788 apo = ctx->trace_data[ctx->pipe_index + 1].pipestat & 0x3;
789 apo |= (ctx->trace_data[ctx->pipe_index + 2].pipestat & 0x3) << 2;
790
791 /* count number of tracesync cycles between current pipe_index and data_index
792 * i.e. the number of tracesyncs that data_index already passed by
793 * to subtract them from the APO */
794 for (i = ctx->pipe_index; i < ctx->data_index; i++)
795 {
796 if (ctx->trace_data[ctx->pipe_index + 1].pipestat & ETMV1_TRACESYNC_CYCLE)
797 apo--;
798 }
799
800 /* extract up to four 7-bit packets */
801 do {
802 if ((retval = etmv1_next_packet(ctx, &packet, (shift == 0) ? apo + 1 : 0)) != 0)
803 return -1;
804 ctx->last_branch &= ~(0x7f << shift);
805 ctx->last_branch |= (packet & 0x7f) << shift;
806 shift += 7;
807 } while ((packet & 0x80) && (shift < 28));
808
809 /* one last packet holding 4 bits of the address, plus the branch reason code */
810 if ((shift == 28) && (packet & 0x80))
811 {
812 if ((retval = etmv1_next_packet(ctx, &packet, 0)) != 0)
813 return -1;
814 ctx->last_branch &= 0x0fffffff;
815 ctx->last_branch |= (packet & 0x0f) << 28;
816 ctx->last_branch_reason = (packet & 0x70) >> 4;
817 shift += 4;
818 }
819 else
820 {
821 ctx->last_branch_reason = 0;
822 }
823
824 if (shift == 32)
825 {
826 ctx->pc_ok = 1;
827 }
828
829 /* if a full address was output, we might have branched into Jazelle state */
830 if ((shift == 32) && (packet & 0x80))
831 {
832 ctx->core_state = ARM_STATE_JAZELLE;
833 }
834 else
835 {
836 /* if we didn't branch into Jazelle state, the current processor state is
837 * encoded in bit 0 of the branch target address */
838 if (ctx->last_branch & 0x1)
839 {
840 ctx->core_state = ARM_STATE_THUMB;
841 ctx->last_branch &= ~0x1;
842 }
843 else
844 {
845 ctx->core_state = ARM_STATE_ARM;
846 ctx->last_branch &= ~0x3;
847 }
848 }
849
850 return 0;
851 }
852
853 static int etmv1_data(struct etm_context *ctx, int size, uint32_t *data)
854 {
855 int j;
856 uint8_t buf[4];
857 int retval;
858
859 for (j = 0; j < size; j++)
860 {
861 if ((retval = etmv1_next_packet(ctx, &buf[j], 0)) != 0)
862 return -1;
863 }
864
865 if (size == 8)
866 {
867 LOG_ERROR("TODO: add support for 64-bit values");
868 return -1;
869 }
870 else if (size == 4)
871 *data = target_buffer_get_u32(ctx->target, buf);
872 else if (size == 2)
873 *data = target_buffer_get_u16(ctx->target, buf);
874 else if (size == 1)
875 *data = buf[0];
876 else
877 return -1;
878
879 return 0;
880 }
881
882 static int etmv1_analyze_trace(struct etm_context *ctx, struct command_context *cmd_ctx)
883 {
884 int retval;
885 struct arm_instruction instruction;
886
887 /* read the trace data if it wasn't read already */
888 if (ctx->trace_depth == 0)
889 ctx->capture_driver->read_trace(ctx);
890
891 /* start at the beginning of the captured trace */
892 ctx->pipe_index = 0;
893 ctx->data_index = 0;
894 ctx->data_half = 0;
895
896 /* neither the PC nor the data pointer are valid */
897 ctx->pc_ok = 0;
898 ctx->ptr_ok = 0;
899
900 while (ctx->pipe_index < ctx->trace_depth)
901 {
902 uint8_t pipestat = ctx->trace_data[ctx->pipe_index].pipestat;
903 uint32_t next_pc = ctx->current_pc;
904 uint32_t old_data_index = ctx->data_index;
905 uint32_t old_data_half = ctx->data_half;
906 uint32_t old_index = ctx->pipe_index;
907 uint32_t last_instruction = ctx->last_instruction;
908 uint32_t cycles = 0;
909 int current_pc_ok = ctx->pc_ok;
910
911 if (ctx->trace_data[ctx->pipe_index].flags & ETMV1_TRIGGER_CYCLE)
912 {
913 command_print(cmd_ctx, "--- trigger ---");
914 }
915
916 /* instructions execute in IE/D or BE/D cycles */
917 if ((pipestat == STAT_IE) || (pipestat == STAT_ID))
918 ctx->last_instruction = ctx->pipe_index;
919
920 /* if we don't have a valid pc skip until we reach an indirect branch */
921 if ((!ctx->pc_ok) && (pipestat != STAT_BE))
922 {
923 ctx->pipe_index++;
924 continue;
925 }
926
927 /* any indirect branch could have interrupted instruction flow
928 * - the branch reason code could indicate a trace discontinuity
929 * - a branch to the exception vectors indicates an exception
930 */
931 if ((pipestat == STAT_BE) || (pipestat == STAT_BD))
932 {
933 /* backup current data index, to be able to consume the branch address
934 * before examining data address and values
935 */
936 old_data_index = ctx->data_index;
937 old_data_half = ctx->data_half;
938
939 ctx->last_instruction = ctx->pipe_index;
940
941 if ((retval = etmv1_branch_address(ctx)) != 0)
942 {
943 /* negative return value from etmv1_branch_address means we ran out of packets,
944 * quit analysing the trace */
945 if (retval < 0)
946 break;
947
948 /* a positive return values means the current branch was abandoned,
949 * and a new branch was encountered in cycle ctx->pipe_index + retval;
950 */
951 LOG_WARNING("abandoned branch encountered, correctnes of analysis uncertain");
952 ctx->pipe_index += retval;
953 continue;
954 }
955
956 /* skip over APO cycles */
957 ctx->pipe_index += 2;
958
959 switch (ctx->last_branch_reason)
960 {
961 case 0x0: /* normal PC change */
962 next_pc = ctx->last_branch;
963 break;
964 case 0x1: /* tracing enabled */
965 command_print(cmd_ctx, "--- tracing enabled at 0x%8.8" PRIx32 " ---", ctx->last_branch);
966 ctx->current_pc = ctx->last_branch;
967 ctx->pipe_index++;
968 continue;
969 break;
970 case 0x2: /* trace restarted after FIFO overflow */
971 command_print(cmd_ctx, "--- trace restarted after FIFO overflow at 0x%8.8" PRIx32 " ---", ctx->last_branch);
972 ctx->current_pc = ctx->last_branch;
973 ctx->pipe_index++;
974 continue;
975 break;
976 case 0x3: /* exit from debug state */
977 command_print(cmd_ctx, "--- exit from debug state at 0x%8.8" PRIx32 " ---", ctx->last_branch);
978 ctx->current_pc = ctx->last_branch;
979 ctx->pipe_index++;
980 continue;
981 break;
982 case 0x4: /* periodic synchronization point */
983 next_pc = ctx->last_branch;
984 /* if we had no valid PC prior to this synchronization point,
985 * we have to move on with the next trace cycle
986 */
987 if (!current_pc_ok)
988 {
989 command_print(cmd_ctx, "--- periodic synchronization point at 0x%8.8" PRIx32 " ---", next_pc);
990 ctx->current_pc = next_pc;
991 ctx->pipe_index++;
992 continue;
993 }
994 break;
995 default: /* reserved */
996 LOG_ERROR("BUG: branch reason code 0x%" PRIx32 " is reserved", ctx->last_branch_reason);
997 return ERROR_FAIL;
998 }
999
1000 /* if we got here the branch was a normal PC change
1001 * (or a periodic synchronization point, which means the same for that matter)
1002 * if we didn't accquire a complete PC continue with the next cycle
1003 */
1004 if (!ctx->pc_ok)
1005 continue;
1006
1007 /* indirect branch to the exception vector means an exception occured */
1008 if ((ctx->last_branch <= 0x20)
1009 || ((ctx->last_branch >= 0xffff0000) && (ctx->last_branch <= 0xffff0020)))
1010 {
1011 if ((ctx->last_branch & 0xff) == 0x10)
1012 {
1013 command_print(cmd_ctx, "data abort");
1014 }
1015 else
1016 {
1017 command_print(cmd_ctx, "exception vector 0x%2.2" PRIx32 "", ctx->last_branch);
1018 ctx->current_pc = ctx->last_branch;
1019 ctx->pipe_index++;
1020 continue;
1021 }
1022 }
1023 }
1024
1025 /* an instruction was executed (or not, depending on the condition flags)
1026 * retrieve it from the image for displaying */
1027 if (ctx->pc_ok && (pipestat != STAT_WT) && (pipestat != STAT_TD) &&
1028 !(((pipestat == STAT_BE) || (pipestat == STAT_BD)) &&
1029 ((ctx->last_branch_reason != 0x0) && (ctx->last_branch_reason != 0x4))))
1030 {
1031 if ((retval = etm_read_instruction(ctx, &instruction)) != ERROR_OK)
1032 {
1033 /* can't continue tracing with no image available */
1034 if (retval == ERROR_TRACE_IMAGE_UNAVAILABLE)
1035 {
1036 return retval;
1037 }
1038 else if (retval == ERROR_TRACE_INSTRUCTION_UNAVAILABLE)
1039 {
1040 /* TODO: handle incomplete images
1041 * for now we just quit the analsysis*/
1042 return retval;
1043 }
1044 }
1045
1046 cycles = old_index - last_instruction;
1047 }
1048
1049 if ((pipestat == STAT_ID) || (pipestat == STAT_BD))
1050 {
1051 uint32_t new_data_index = ctx->data_index;
1052 uint32_t new_data_half = ctx->data_half;
1053
1054 /* in case of a branch with data, the branch target address was consumed before
1055 * we temporarily go back to the saved data index */
1056 if (pipestat == STAT_BD)
1057 {
1058 ctx->data_index = old_data_index;
1059 ctx->data_half = old_data_half;
1060 }
1061
1062 if (ctx->tracemode & ETMV1_TRACE_ADDR)
1063 {
1064 uint8_t packet;
1065 int shift = 0;
1066
1067 do {
1068 if ((retval = etmv1_next_packet(ctx, &packet, 0)) != 0)
1069 return ERROR_ETM_ANALYSIS_FAILED;
1070 ctx->last_ptr &= ~(0x7f << shift);
1071 ctx->last_ptr |= (packet & 0x7f) << shift;
1072 shift += 7;
1073 } while ((packet & 0x80) && (shift < 32));
1074
1075 if (shift >= 32)
1076 ctx->ptr_ok = 1;
1077
1078 if (ctx->ptr_ok)
1079 {
1080 command_print(cmd_ctx, "address: 0x%8.8" PRIx32 "", ctx->last_ptr);
1081 }
1082 }
1083
1084 if (ctx->tracemode & ETMV1_TRACE_DATA)
1085 {
1086 if ((instruction.type == ARM_LDM) || (instruction.type == ARM_STM))
1087 {
1088 int i;
1089 for (i = 0; i < 16; i++)
1090 {
1091 if (instruction.info.load_store_multiple.register_list & (1 << i))
1092 {
1093 uint32_t data;
1094 if (etmv1_data(ctx, 4, &data) != 0)
1095 return ERROR_ETM_ANALYSIS_FAILED;
1096 command_print(cmd_ctx, "data: 0x%8.8" PRIx32 "", data);
1097 }
1098 }
1099 }
1100 else if ((instruction.type >= ARM_LDR) && (instruction.type <= ARM_STRH))
1101 {
1102 uint32_t data;
1103 if (etmv1_data(ctx, arm_access_size(&instruction), &data) != 0)
1104 return ERROR_ETM_ANALYSIS_FAILED;
1105 command_print(cmd_ctx, "data: 0x%8.8" PRIx32 "", data);
1106 }
1107 }
1108
1109 /* restore data index after consuming BD address and data */
1110 if (pipestat == STAT_BD)
1111 {
1112 ctx->data_index = new_data_index;
1113 ctx->data_half = new_data_half;
1114 }
1115 }
1116
1117 /* adjust PC */
1118 if ((pipestat == STAT_IE) || (pipestat == STAT_ID))
1119 {
1120 if (((instruction.type == ARM_B) ||
1121 (instruction.type == ARM_BL) ||
1122 (instruction.type == ARM_BLX)) &&
1123 (instruction.info.b_bl_bx_blx.target_address != 0xffffffff))
1124 {
1125 next_pc = instruction.info.b_bl_bx_blx.target_address;
1126 }
1127 else
1128 {
1129 next_pc += (ctx->core_state == ARM_STATE_ARM) ? 4 : 2;
1130 }
1131 }
1132 else if (pipestat == STAT_IN)
1133 {
1134 next_pc += (ctx->core_state == ARM_STATE_ARM) ? 4 : 2;
1135 }
1136
1137 if ((pipestat != STAT_TD) && (pipestat != STAT_WT))
1138 {
1139 char cycles_text[32] = "";
1140
1141 /* if the trace was captured with cycle accurate tracing enabled,
1142 * output the number of cycles since the last executed instruction
1143 */
1144 if (ctx->tracemode & ETMV1_CYCLE_ACCURATE)
1145 {
1146 snprintf(cycles_text, 32, " (%i %s)",
1147 (int)cycles,
1148 (cycles == 1) ? "cycle" : "cycles");
1149 }
1150
1151 command_print(cmd_ctx, "%s%s%s",
1152 instruction.text,
1153 (pipestat == STAT_IN) ? " (not executed)" : "",
1154 cycles_text);
1155
1156 ctx->current_pc = next_pc;
1157
1158 /* packets for an instruction don't start on or before the preceding
1159 * functional pipestat (i.e. other than WT or TD)
1160 */
1161 if (ctx->data_index <= ctx->pipe_index)
1162 {
1163 ctx->data_index = ctx->pipe_index + 1;
1164 ctx->data_half = 0;
1165 }
1166 }
1167
1168 ctx->pipe_index += 1;
1169 }
1170
1171 return ERROR_OK;
1172 }
1173
1174 static COMMAND_HELPER(handle_etm_tracemode_command_update,
1175 uint32_t *mode)
1176 {
1177 uint32_t tracemode;
1178
1179 /* what parts of data access are traced? */
1180 if (strcmp(CMD_ARGV[0], "none") == 0)
1181 tracemode = ETMV1_TRACE_NONE;
1182 else if (strcmp(CMD_ARGV[0], "data") == 0)
1183 tracemode = ETMV1_TRACE_DATA;
1184 else if (strcmp(CMD_ARGV[0], "address") == 0)
1185 tracemode = ETMV1_TRACE_ADDR;
1186 else if (strcmp(CMD_ARGV[0], "all") == 0)
1187 tracemode = ETMV1_TRACE_DATA | ETMV1_TRACE_ADDR;
1188 else
1189 {
1190 command_print(CMD_CTX, "invalid option '%s'", CMD_ARGV[0]);
1191 return ERROR_INVALID_ARGUMENTS;
1192 }
1193
1194 uint8_t context_id;
1195 COMMAND_PARSE_NUMBER(u8, CMD_ARGV[1], context_id);
1196 switch (context_id)
1197 {
1198 case 0:
1199 tracemode |= ETMV1_CONTEXTID_NONE;
1200 break;
1201 case 8:
1202 tracemode |= ETMV1_CONTEXTID_8;
1203 break;
1204 case 16:
1205 tracemode |= ETMV1_CONTEXTID_16;
1206 break;
1207 case 32:
1208 tracemode |= ETMV1_CONTEXTID_32;
1209 break;
1210 default:
1211 command_print(CMD_CTX, "invalid option '%s'", CMD_ARGV[1]);
1212 return ERROR_INVALID_ARGUMENTS;
1213 }
1214
1215 bool etmv1_cycle_accurate;
1216 COMMAND_PARSE_ENABLE(CMD_ARGV[2], etmv1_cycle_accurate);
1217 if (etmv1_cycle_accurate)
1218 tracemode |= ETMV1_CYCLE_ACCURATE;
1219
1220 bool etmv1_branch_output;
1221 COMMAND_PARSE_ENABLE(CMD_ARGV[3], etmv1_branch_output);
1222 if (etmv1_branch_output)
1223 tracemode |= ETMV1_BRANCH_OUTPUT;
1224
1225 /* IGNORED:
1226 * - CPRT tracing (coprocessor register transfers)
1227 * - debug request (causes debug entry on trigger)
1228 * - stall on FIFOFULL (preventing tracedata lossage)
1229 */
1230 *mode = tracemode;
1231
1232 return ERROR_OK;
1233 }
1234
1235 COMMAND_HANDLER(handle_etm_tracemode_command)
1236 {
1237 struct target *target = get_current_target(CMD_CTX);
1238 struct arm *arm = target_to_arm(target);
1239 struct etm_context *etm;
1240
1241 if (!is_arm(arm)) {
1242 command_print(CMD_CTX, "ETM: current target isn't an ARM");
1243 return ERROR_FAIL;
1244 }
1245
1246 etm = arm->etm;
1247 if (!etm) {
1248 command_print(CMD_CTX, "current target doesn't have an ETM configured");
1249 return ERROR_FAIL;
1250 }
1251
1252 uint32_t tracemode = etm->tracemode;
1253
1254 switch (CMD_ARGC)
1255 {
1256 case 0:
1257 break;
1258 case 4:
1259 CALL_COMMAND_HANDLER(handle_etm_tracemode_command_update, &tracemode);
1260 break;
1261 default:
1262 command_print(CMD_CTX, "usage: configure trace mode "
1263 "<none | data | address | all> "
1264 "<context id bits> <cycle accurate> <branch output>");
1265 return ERROR_FAIL;
1266 }
1267
1268 /**
1269 * todo: fail if parameters were invalid for this hardware,
1270 * or couldn't be written; display actual hardware state...
1271 */
1272
1273 command_print(CMD_CTX, "current tracemode configuration:");
1274
1275 switch (tracemode & ETMV1_TRACE_MASK)
1276 {
1277 case ETMV1_TRACE_NONE:
1278 command_print(CMD_CTX, "data tracing: none");
1279 break;
1280 case ETMV1_TRACE_DATA:
1281 command_print(CMD_CTX, "data tracing: data only");
1282 break;
1283 case ETMV1_TRACE_ADDR:
1284 command_print(CMD_CTX, "data tracing: address only");
1285 break;
1286 case ETMV1_TRACE_DATA | ETMV1_TRACE_ADDR:
1287 command_print(CMD_CTX, "data tracing: address and data");
1288 break;
1289 }
1290
1291 switch (tracemode & ETMV1_CONTEXTID_MASK)
1292 {
1293 case ETMV1_CONTEXTID_NONE:
1294 command_print(CMD_CTX, "contextid tracing: none");
1295 break;
1296 case ETMV1_CONTEXTID_8:
1297 command_print(CMD_CTX, "contextid tracing: 8 bit");
1298 break;
1299 case ETMV1_CONTEXTID_16:
1300 command_print(CMD_CTX, "contextid tracing: 16 bit");
1301 break;
1302 case ETMV1_CONTEXTID_32:
1303 command_print(CMD_CTX, "contextid tracing: 32 bit");
1304 break;
1305 }
1306
1307 if (tracemode & ETMV1_CYCLE_ACCURATE)
1308 {
1309 command_print(CMD_CTX, "cycle-accurate tracing enabled");
1310 }
1311 else
1312 {
1313 command_print(CMD_CTX, "cycle-accurate tracing disabled");
1314 }
1315
1316 if (tracemode & ETMV1_BRANCH_OUTPUT)
1317 {
1318 command_print(CMD_CTX, "full branch address output enabled");
1319 }
1320 else
1321 {
1322 command_print(CMD_CTX, "full branch address output disabled");
1323 }
1324
1325 /* only update ETM_CTRL register if tracemode changed */
1326 if (etm->tracemode != tracemode)
1327 {
1328 struct reg *etm_ctrl_reg;
1329
1330 etm_ctrl_reg = etm_reg_lookup(etm, ETM_CTRL);
1331 if (!etm_ctrl_reg)
1332 return ERROR_FAIL;
1333
1334 etm_get_reg(etm_ctrl_reg);
1335
1336 buf_set_u32(etm_ctrl_reg->value, 2, 2, tracemode & ETMV1_TRACE_MASK);
1337 buf_set_u32(etm_ctrl_reg->value, 14, 2, (tracemode & ETMV1_CONTEXTID_MASK) >> 4);
1338 buf_set_u32(etm_ctrl_reg->value, 12, 1, (tracemode & ETMV1_CYCLE_ACCURATE) >> 8);
1339 buf_set_u32(etm_ctrl_reg->value, 8, 1, (tracemode & ETMV1_BRANCH_OUTPUT) >> 9);
1340 etm_store_reg(etm_ctrl_reg);
1341
1342 etm->tracemode = tracemode;
1343
1344 /* invalidate old trace data */
1345 etm->capture_status = TRACE_IDLE;
1346 if (etm->trace_depth > 0)
1347 {
1348 free(etm->trace_data);
1349 etm->trace_data = NULL;
1350 }
1351 etm->trace_depth = 0;
1352 }
1353
1354 return ERROR_OK;
1355 }
1356
1357 COMMAND_HANDLER(handle_etm_config_command)
1358 {
1359 struct target *target;
1360 struct arm *arm;
1361 uint32_t portmode = 0x0;
1362 struct etm_context *etm_ctx;
1363 int i;
1364
1365 if (CMD_ARGC != 5)
1366 return ERROR_COMMAND_SYNTAX_ERROR;
1367
1368 target = get_target(CMD_ARGV[0]);
1369 if (!target)
1370 {
1371 LOG_ERROR("target '%s' not defined", CMD_ARGV[0]);
1372 return ERROR_FAIL;
1373 }
1374
1375 arm = target_to_arm(target);
1376 if (!is_arm(arm)) {
1377 command_print(CMD_CTX, "target '%s' is '%s'; not an ARM",
1378 target_name(target),
1379 target_type_name(target));
1380 return ERROR_FAIL;
1381 }
1382
1383 /* FIXME for ETMv3.0 and above -- and we don't yet know what ETM
1384 * version we'll be using!! -- so we can't know how to validate
1385 * params yet. "etm config" should likely be *AFTER* hookup...
1386 *
1387 * - Many more widths might be supported ... and we can easily
1388 * check whether our setting "took".
1389 *
1390 * - The "clock" and "mode" bits are interpreted differently.
1391 * See ARM IHI 0014O table 2-17 for the old behavior, and
1392 * table 2-18 for the new. With ETB it's best to specify
1393 * "normal full" ...
1394 */
1395 uint8_t port_width;
1396 COMMAND_PARSE_NUMBER(u8, CMD_ARGV[1], port_width);
1397 switch (port_width)
1398 {
1399 /* before ETMv3.0 */
1400 case 4:
1401 portmode |= ETM_PORT_4BIT;
1402 break;
1403 case 8:
1404 portmode |= ETM_PORT_8BIT;
1405 break;
1406 case 16:
1407 portmode |= ETM_PORT_16BIT;
1408 break;
1409 /* ETMv3.0 and later*/
1410 case 24:
1411 portmode |= ETM_PORT_24BIT;
1412 break;
1413 case 32:
1414 portmode |= ETM_PORT_32BIT;
1415 break;
1416 case 48:
1417 portmode |= ETM_PORT_48BIT;
1418 break;
1419 case 64:
1420 portmode |= ETM_PORT_64BIT;
1421 break;
1422 case 1:
1423 portmode |= ETM_PORT_1BIT;
1424 break;
1425 case 2:
1426 portmode |= ETM_PORT_2BIT;
1427 break;
1428 default:
1429 command_print(CMD_CTX,
1430 "unsupported ETM port width '%s'", CMD_ARGV[1]);
1431 return ERROR_FAIL;
1432 }
1433
1434 if (strcmp("normal", CMD_ARGV[2]) == 0)
1435 {
1436 portmode |= ETM_PORT_NORMAL;
1437 }
1438 else if (strcmp("multiplexed", CMD_ARGV[2]) == 0)
1439 {
1440 portmode |= ETM_PORT_MUXED;
1441 }
1442 else if (strcmp("demultiplexed", CMD_ARGV[2]) == 0)
1443 {
1444 portmode |= ETM_PORT_DEMUXED;
1445 }
1446 else
1447 {
1448 command_print(CMD_CTX, "unsupported ETM port mode '%s', must be 'normal', 'multiplexed' or 'demultiplexed'", CMD_ARGV[2]);
1449 return ERROR_FAIL;
1450 }
1451
1452 if (strcmp("half", CMD_ARGV[3]) == 0)
1453 {
1454 portmode |= ETM_PORT_HALF_CLOCK;
1455 }
1456 else if (strcmp("full", CMD_ARGV[3]) == 0)
1457 {
1458 portmode |= ETM_PORT_FULL_CLOCK;
1459 }
1460 else
1461 {
1462 command_print(CMD_CTX, "unsupported ETM port clocking '%s', must be 'full' or 'half'", CMD_ARGV[3]);
1463 return ERROR_FAIL;
1464 }
1465
1466 etm_ctx = calloc(1, sizeof(struct etm_context));
1467 if (!etm_ctx) {
1468 LOG_DEBUG("out of memory");
1469 return ERROR_FAIL;
1470 }
1471
1472 for (i = 0; etm_capture_drivers[i]; i++)
1473 {
1474 if (strcmp(CMD_ARGV[4], etm_capture_drivers[i]->name) == 0)
1475 {
1476 int retval = register_commands(CMD_CTX, NULL,
1477 etm_capture_drivers[i]->commands);
1478 if (ERROR_OK != retval)
1479 {
1480 free(etm_ctx);
1481 return retval;
1482 }
1483
1484 etm_ctx->capture_driver = etm_capture_drivers[i];
1485
1486 break;
1487 }
1488 }
1489
1490 if (!etm_capture_drivers[i])
1491 {
1492 /* no supported capture driver found, don't register an ETM */
1493 free(etm_ctx);
1494 LOG_ERROR("trace capture driver '%s' not found", CMD_ARGV[4]);
1495 return ERROR_FAIL;
1496 }
1497
1498 etm_ctx->target = target;
1499 etm_ctx->trace_data = NULL;
1500 etm_ctx->control = portmode;
1501 etm_ctx->core_state = ARM_STATE_ARM;
1502
1503 arm->etm = etm_ctx;
1504
1505 return etm_register_user_commands(CMD_CTX);
1506 }
1507
1508 COMMAND_HANDLER(handle_etm_info_command)
1509 {
1510 struct target *target;
1511 struct arm *arm;
1512 struct etm_context *etm;
1513 struct reg *etm_sys_config_reg;
1514 int max_port_size;
1515 uint32_t config;
1516
1517 target = get_current_target(CMD_CTX);
1518 arm = target_to_arm(target);
1519 if (!is_arm(arm))
1520 {
1521 command_print(CMD_CTX, "ETM: current target isn't an ARM");
1522 return ERROR_FAIL;
1523 }
1524
1525 etm = arm->etm;
1526 if (!etm)
1527 {
1528 command_print(CMD_CTX, "current target doesn't have an ETM configured");
1529 return ERROR_FAIL;
1530 }
1531
1532 command_print(CMD_CTX, "ETM v%d.%d",
1533 etm->bcd_vers >> 4, etm->bcd_vers & 0xf);
1534 command_print(CMD_CTX, "pairs of address comparators: %i",
1535 (int) (etm->config >> 0) & 0x0f);
1536 command_print(CMD_CTX, "data comparators: %i",
1537 (int) (etm->config >> 4) & 0x0f);
1538 command_print(CMD_CTX, "memory map decoders: %i",
1539 (int) (etm->config >> 8) & 0x1f);
1540 command_print(CMD_CTX, "number of counters: %i",
1541 (int) (etm->config >> 13) & 0x07);
1542 command_print(CMD_CTX, "sequencer %spresent",
1543 (int) (etm->config & (1 << 16)) ? "" : "not ");
1544 command_print(CMD_CTX, "number of ext. inputs: %i",
1545 (int) (etm->config >> 17) & 0x07);
1546 command_print(CMD_CTX, "number of ext. outputs: %i",
1547 (int) (etm->config >> 20) & 0x07);
1548 command_print(CMD_CTX, "FIFO full %spresent",
1549 (int) (etm->config & (1 << 23)) ? "" : "not ");
1550 if (etm->bcd_vers < 0x20)
1551 command_print(CMD_CTX, "protocol version: %i",
1552 (int) (etm->config >> 28) & 0x07);
1553 else {
1554 command_print(CMD_CTX,
1555 "coprocessor and memory access %ssupported",
1556 (etm->config & (1 << 26)) ? "" : "not ");
1557 command_print(CMD_CTX, "trace start/stop %spresent",
1558 (etm->config & (1 << 26)) ? "" : "not ");
1559 command_print(CMD_CTX, "number of context comparators: %i",
1560 (int) (etm->config >> 24) & 0x03);
1561 }
1562
1563 /* SYS_CONFIG isn't present before ETMv1.2 */
1564 etm_sys_config_reg = etm_reg_lookup(etm, ETM_SYS_CONFIG);
1565 if (!etm_sys_config_reg)
1566 return ERROR_OK;
1567
1568 etm_get_reg(etm_sys_config_reg);
1569 config = buf_get_u32(etm_sys_config_reg->value, 0, 32);
1570
1571 LOG_DEBUG("ETM SYS CONFIG %08x", (unsigned) config);
1572
1573 max_port_size = config & 0x7;
1574 if (etm->bcd_vers >= 0x30)
1575 max_port_size |= (config >> 6) & 0x08;
1576 switch (max_port_size)
1577 {
1578 /* before ETMv3.0 */
1579 case 0:
1580 max_port_size = 4;
1581 break;
1582 case 1:
1583 max_port_size = 8;
1584 break;
1585 case 2:
1586 max_port_size = 16;
1587 break;
1588 /* ETMv3.0 and later*/
1589 case 3:
1590 max_port_size = 24;
1591 break;
1592 case 4:
1593 max_port_size = 32;
1594 break;
1595 case 5:
1596 max_port_size = 48;
1597 break;
1598 case 6:
1599 max_port_size = 64;
1600 break;
1601 case 8:
1602 max_port_size = 1;
1603 break;
1604 case 9:
1605 max_port_size = 2;
1606 break;
1607 default:
1608 LOG_ERROR("Illegal max_port_size");
1609 return ERROR_FAIL;
1610 }
1611 command_print(CMD_CTX, "max. port size: %i", max_port_size);
1612
1613 if (etm->bcd_vers < 0x30) {
1614 command_print(CMD_CTX, "half-rate clocking %ssupported",
1615 (config & (1 << 3)) ? "" : "not ");
1616 command_print(CMD_CTX, "full-rate clocking %ssupported",
1617 (config & (1 << 4)) ? "" : "not ");
1618 command_print(CMD_CTX, "normal trace format %ssupported",
1619 (config & (1 << 5)) ? "" : "not ");
1620 command_print(CMD_CTX, "multiplex trace format %ssupported",
1621 (config & (1 << 6)) ? "" : "not ");
1622 command_print(CMD_CTX, "demultiplex trace format %ssupported",
1623 (config & (1 << 7)) ? "" : "not ");
1624 } else {
1625 /* REVISIT show which size and format are selected ... */
1626 command_print(CMD_CTX, "current port size %ssupported",
1627 (config & (1 << 10)) ? "" : "not ");
1628 command_print(CMD_CTX, "current trace format %ssupported",
1629 (config & (1 << 11)) ? "" : "not ");
1630 }
1631 if (etm->bcd_vers >= 0x21)
1632 command_print(CMD_CTX, "fetch comparisons %ssupported",
1633 (config & (1 << 17)) ? "not " : "");
1634 command_print(CMD_CTX, "FIFO full %ssupported",
1635 (config & (1 << 8)) ? "" : "not ");
1636
1637 return ERROR_OK;
1638 }
1639
1640 COMMAND_HANDLER(handle_etm_status_command)
1641 {
1642 struct target *target;
1643 struct arm *arm;
1644 struct etm_context *etm;
1645 trace_status_t trace_status;
1646
1647 target = get_current_target(CMD_CTX);
1648 arm = target_to_arm(target);
1649 if (!is_arm(arm))
1650 {
1651 command_print(CMD_CTX, "ETM: current target isn't an ARM");
1652 return ERROR_FAIL;
1653 }
1654
1655 etm = arm->etm;
1656 if (!etm)
1657 {
1658 command_print(CMD_CTX, "current target doesn't have an ETM configured");
1659 return ERROR_FAIL;
1660 }
1661
1662 /* ETM status */
1663 if (etm->bcd_vers >= 0x11) {
1664 struct reg *reg;
1665
1666 reg = etm_reg_lookup(etm, ETM_STATUS);
1667 if (!reg)
1668 return ERROR_FAIL;
1669 if (etm_get_reg(reg) == ERROR_OK) {
1670 unsigned s = buf_get_u32(reg->value, 0, reg->size);
1671
1672 command_print(CMD_CTX, "etm: %s%s%s%s",
1673 /* bit(1) == progbit */
1674 (etm->bcd_vers >= 0x12)
1675 ? ((s & (1 << 1))
1676 ? "disabled" : "enabled")
1677 : "?",
1678 ((s & (1 << 3)) && etm->bcd_vers >= 0x31)
1679 ? " triggered" : "",
1680 ((s & (1 << 2)) && etm->bcd_vers >= 0x12)
1681 ? " start/stop" : "",
1682 ((s & (1 << 0)) && etm->bcd_vers >= 0x11)
1683 ? " untraced-overflow" : "");
1684 } /* else ignore and try showing trace port status */
1685 }
1686
1687 /* Trace Port Driver status */
1688 trace_status = etm->capture_driver->status(etm);
1689 if (trace_status == TRACE_IDLE)
1690 {
1691 command_print(CMD_CTX, "%s: idle", etm->capture_driver->name);
1692 }
1693 else
1694 {
1695 static char *completed = " completed";
1696 static char *running = " is running";
1697 static char *overflowed = ", overflowed";
1698 static char *triggered = ", triggered";
1699
1700 command_print(CMD_CTX, "%s: trace collection%s%s%s",
1701 etm->capture_driver->name,
1702 (trace_status & TRACE_RUNNING) ? running : completed,
1703 (trace_status & TRACE_OVERFLOWED) ? overflowed : "",
1704 (trace_status & TRACE_TRIGGERED) ? triggered : "");
1705
1706 if (etm->trace_depth > 0)
1707 {
1708 command_print(CMD_CTX, "%i frames of trace data read",
1709 (int)(etm->trace_depth));
1710 }
1711 }
1712
1713 return ERROR_OK;
1714 }
1715
1716 COMMAND_HANDLER(handle_etm_image_command)
1717 {
1718 struct target *target;
1719 struct arm *arm;
1720 struct etm_context *etm_ctx;
1721
1722 if (CMD_ARGC < 1)
1723 {
1724 command_print(CMD_CTX, "usage: etm image <file> [base address] [type]");
1725 return ERROR_FAIL;
1726 }
1727
1728 target = get_current_target(CMD_CTX);
1729 arm = target_to_arm(target);
1730 if (!is_arm(arm))
1731 {
1732 command_print(CMD_CTX, "ETM: current target isn't an ARM");
1733 return ERROR_FAIL;
1734 }
1735
1736 etm_ctx = arm->etm;
1737 if (!etm_ctx)
1738 {
1739 command_print(CMD_CTX, "current target doesn't have an ETM configured");
1740 return ERROR_FAIL;
1741 }
1742
1743 if (etm_ctx->image)
1744 {
1745 image_close(etm_ctx->image);
1746 free(etm_ctx->image);
1747 command_print(CMD_CTX, "previously loaded image found and closed");
1748 }
1749
1750 etm_ctx->image = malloc(sizeof(struct image));
1751 etm_ctx->image->base_address_set = 0;
1752 etm_ctx->image->start_address_set = 0;
1753
1754 /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
1755 if (CMD_ARGC >= 2)
1756 {
1757 etm_ctx->image->base_address_set = 1;
1758 COMMAND_PARSE_NUMBER(int, CMD_ARGV[1], etm_ctx->image->base_address);
1759 }
1760 else
1761 {
1762 etm_ctx->image->base_address_set = 0;
1763 }
1764
1765 if (image_open(etm_ctx->image, CMD_ARGV[0], (CMD_ARGC >= 3) ? CMD_ARGV[2] : NULL) != ERROR_OK)
1766 {
1767 free(etm_ctx->image);
1768 etm_ctx->image = NULL;
1769 return ERROR_FAIL;
1770 }
1771
1772 return ERROR_OK;
1773 }
1774
1775 COMMAND_HANDLER(handle_etm_dump_command)
1776 {
1777 struct fileio file;
1778 struct target *target;
1779 struct arm *arm;
1780 struct etm_context *etm_ctx;
1781 uint32_t i;
1782
1783 if (CMD_ARGC != 1)
1784 {
1785 command_print(CMD_CTX, "usage: etm dump <file>");
1786 return ERROR_FAIL;
1787 }
1788
1789 target = get_current_target(CMD_CTX);
1790 arm = target_to_arm(target);
1791 if (!is_arm(arm))
1792 {
1793 command_print(CMD_CTX, "ETM: current target isn't an ARM");
1794 return ERROR_FAIL;
1795 }
1796
1797 etm_ctx = arm->etm;
1798 if (!etm_ctx)
1799 {
1800 command_print(CMD_CTX, "current target doesn't have an ETM configured");
1801 return ERROR_FAIL;
1802 }
1803
1804 if (etm_ctx->capture_driver->status == TRACE_IDLE)
1805 {
1806 command_print(CMD_CTX, "trace capture wasn't enabled, no trace data captured");
1807 return ERROR_OK;
1808 }
1809
1810 if (etm_ctx->capture_driver->status(etm_ctx) & TRACE_RUNNING)
1811 {
1812 /* TODO: if on-the-fly capture is to be supported, this needs to be changed */
1813 command_print(CMD_CTX, "trace capture not completed");
1814 return ERROR_FAIL;
1815 }
1816
1817 /* read the trace data if it wasn't read already */
1818 if (etm_ctx->trace_depth == 0)
1819 etm_ctx->capture_driver->read_trace(etm_ctx);
1820
1821 if (fileio_open(&file, CMD_ARGV[0], FILEIO_WRITE, FILEIO_BINARY) != ERROR_OK)
1822 {
1823 return ERROR_FAIL;
1824 }
1825
1826 fileio_write_u32(&file, etm_ctx->capture_status);
1827 fileio_write_u32(&file, etm_ctx->control);
1828 fileio_write_u32(&file, etm_ctx->tracemode);
1829 fileio_write_u32(&file, etm_ctx->trace_depth);
1830
1831 for (i = 0; i < etm_ctx->trace_depth; i++)
1832 {
1833 fileio_write_u32(&file, etm_ctx->trace_data[i].pipestat);
1834 fileio_write_u32(&file, etm_ctx->trace_data[i].packet);
1835 fileio_write_u32(&file, etm_ctx->trace_data[i].flags);
1836 }
1837
1838 fileio_close(&file);
1839
1840 return ERROR_OK;
1841 }
1842
1843 COMMAND_HANDLER(handle_etm_load_command)
1844 {
1845 struct fileio file;
1846 struct target *target;
1847 struct arm *arm;
1848 struct etm_context *etm_ctx;
1849 uint32_t i;
1850
1851 if (CMD_ARGC != 1)
1852 {
1853 command_print(CMD_CTX, "usage: etm load <file>");
1854 return ERROR_FAIL;
1855 }
1856
1857 target = get_current_target(CMD_CTX);
1858 arm = target_to_arm(target);
1859 if (!is_arm(arm))
1860 {
1861 command_print(CMD_CTX, "ETM: current target isn't an ARM");
1862 return ERROR_FAIL;
1863 }
1864
1865 etm_ctx = arm->etm;
1866 if (!etm_ctx)
1867 {
1868 command_print(CMD_CTX, "current target doesn't have an ETM configured");
1869 return ERROR_FAIL;
1870 }
1871
1872 if (etm_ctx->capture_driver->status(etm_ctx) & TRACE_RUNNING)
1873 {
1874 command_print(CMD_CTX, "trace capture running, stop first");
1875 return ERROR_FAIL;
1876 }
1877
1878 if (fileio_open(&file, CMD_ARGV[0], FILEIO_READ, FILEIO_BINARY) != ERROR_OK)
1879 {
1880 return ERROR_FAIL;
1881 }
1882
1883 if (file.size % 4)
1884 {
1885 command_print(CMD_CTX, "size isn't a multiple of 4, no valid trace data");
1886 fileio_close(&file);
1887 return ERROR_FAIL;
1888 }
1889
1890 if (etm_ctx->trace_depth > 0)
1891 {
1892 free(etm_ctx->trace_data);
1893 etm_ctx->trace_data = NULL;
1894 }
1895
1896 {
1897 uint32_t tmp;
1898 fileio_read_u32(&file, &tmp); etm_ctx->capture_status = tmp;
1899 fileio_read_u32(&file, &tmp); etm_ctx->control = tmp;
1900 fileio_read_u32(&file, &tmp); etm_ctx->tracemode = tmp;
1901 fileio_read_u32(&file, &etm_ctx->trace_depth);
1902 }
1903 etm_ctx->trace_data = malloc(sizeof(struct etmv1_trace_data) * etm_ctx->trace_depth);
1904 if (etm_ctx->trace_data == NULL)
1905 {
1906 command_print(CMD_CTX, "not enough memory to perform operation");
1907 fileio_close(&file);
1908 return ERROR_FAIL;
1909 }
1910
1911 for (i = 0; i < etm_ctx->trace_depth; i++)
1912 {
1913 uint32_t pipestat, packet, flags;
1914 fileio_read_u32(&file, &pipestat);
1915 fileio_read_u32(&file, &packet);
1916 fileio_read_u32(&file, &flags);
1917 etm_ctx->trace_data[i].pipestat = pipestat & 0xff;
1918 etm_ctx->trace_data[i].packet = packet & 0xffff;
1919 etm_ctx->trace_data[i].flags = flags;
1920 }
1921
1922 fileio_close(&file);
1923
1924 return ERROR_OK;
1925 }
1926
1927 COMMAND_HANDLER(handle_etm_start_command)
1928 {
1929 struct target *target;
1930 struct arm *arm;
1931 struct etm_context *etm_ctx;
1932 struct reg *etm_ctrl_reg;
1933
1934 target = get_current_target(CMD_CTX);
1935 arm = target_to_arm(target);
1936 if (!is_arm(arm))
1937 {
1938 command_print(CMD_CTX, "ETM: current target isn't an ARM");
1939 return ERROR_FAIL;
1940 }
1941
1942 etm_ctx = arm->etm;
1943 if (!etm_ctx)
1944 {
1945 command_print(CMD_CTX, "current target doesn't have an ETM configured");
1946 return ERROR_FAIL;
1947 }
1948
1949 /* invalidate old tracing data */
1950 etm_ctx->capture_status = TRACE_IDLE;
1951 if (etm_ctx->trace_depth > 0)
1952 {
1953 free(etm_ctx->trace_data);
1954 etm_ctx->trace_data = NULL;
1955 }
1956 etm_ctx->trace_depth = 0;
1957
1958 etm_ctrl_reg = etm_reg_lookup(etm_ctx, ETM_CTRL);
1959 if (!etm_ctrl_reg)
1960 return ERROR_FAIL;
1961
1962 etm_get_reg(etm_ctrl_reg);
1963
1964 /* Clear programming bit (10), set port selection bit (11) */
1965 buf_set_u32(etm_ctrl_reg->value, 10, 2, 0x2);
1966
1967 etm_store_reg(etm_ctrl_reg);
1968 jtag_execute_queue();
1969
1970 etm_ctx->capture_driver->start_capture(etm_ctx);
1971
1972 return ERROR_OK;
1973 }
1974
1975 COMMAND_HANDLER(handle_etm_stop_command)
1976 {
1977 struct target *target;
1978 struct arm *arm;
1979 struct etm_context *etm_ctx;
1980 struct reg *etm_ctrl_reg;
1981
1982 target = get_current_target(CMD_CTX);
1983 arm = target_to_arm(target);
1984 if (!is_arm(arm))
1985 {
1986 command_print(CMD_CTX, "ETM: current target isn't an ARM");
1987 return ERROR_FAIL;
1988 }
1989
1990 etm_ctx = arm->etm;
1991 if (!etm_ctx)
1992 {
1993 command_print(CMD_CTX, "current target doesn't have an ETM configured");
1994 return ERROR_FAIL;
1995 }
1996
1997 etm_ctrl_reg = etm_reg_lookup(etm_ctx, ETM_CTRL);
1998 if (!etm_ctrl_reg)
1999 return ERROR_FAIL;
2000
2001 etm_get_reg(etm_ctrl_reg);
2002
2003 /* Set programming bit (10), clear port selection bit (11) */
2004 buf_set_u32(etm_ctrl_reg->value, 10, 2, 0x1);
2005
2006 etm_store_reg(etm_ctrl_reg);
2007 jtag_execute_queue();
2008
2009 etm_ctx->capture_driver->stop_capture(etm_ctx);
2010
2011 return ERROR_OK;
2012 }
2013
2014 COMMAND_HANDLER(handle_etm_analyze_command)
2015 {
2016 struct target *target;
2017 struct arm *arm;
2018 struct etm_context *etm_ctx;
2019 int retval;
2020
2021 target = get_current_target(CMD_CTX);
2022 arm = target_to_arm(target);
2023 if (!is_arm(arm))
2024 {
2025 command_print(CMD_CTX, "ETM: current target isn't an ARM");
2026 return ERROR_FAIL;
2027 }
2028
2029 etm_ctx = arm->etm;
2030 if (!etm_ctx)
2031 {
2032 command_print(CMD_CTX, "current target doesn't have an ETM configured");
2033 return ERROR_FAIL;
2034 }
2035
2036 if ((retval = etmv1_analyze_trace(etm_ctx, CMD_CTX)) != ERROR_OK)
2037 {
2038 switch (retval)
2039 {
2040 case ERROR_ETM_ANALYSIS_FAILED:
2041 command_print(CMD_CTX, "further analysis failed (corrupted trace data or just end of data");
2042 break;
2043 case ERROR_TRACE_INSTRUCTION_UNAVAILABLE:
2044 command_print(CMD_CTX, "no instruction for current address available, analysis aborted");
2045 break;
2046 case ERROR_TRACE_IMAGE_UNAVAILABLE:
2047 command_print(CMD_CTX, "no image available for trace analysis");
2048 break;
2049 default:
2050 command_print(CMD_CTX, "unknown error: %i", retval);
2051 }
2052 }
2053
2054 return retval;
2055 }
2056
2057 static const struct command_registration etm_config_command_handlers[] = {
2058 {
2059 .name = "config",
2060 .handler = &handle_etm_config_command,
2061 .mode = COMMAND_CONFIG,
2062 .usage = "<target> <port_width> <port_mode> "
2063 "<clocking> <capture_driver>",
2064 },
2065 COMMAND_REGISTRATION_DONE
2066 };
2067 const struct command_registration etm_command_handlers[] = {
2068 {
2069 .name = "etm",
2070 .mode = COMMAND_ANY,
2071 .help = "Emebdded Trace Macrocell command group",
2072 .chain = etm_config_command_handlers,
2073 },
2074 COMMAND_REGISTRATION_DONE
2075 };
2076
2077 static const struct command_registration etm_exec_command_handlers[] = {
2078 {
2079 .name = "tracemode", handle_etm_tracemode_command,
2080 .mode = COMMAND_EXEC,
2081 .help = "configure/display trace mode",
2082 .usage = "<none | data | address | all> "
2083 "<context_id_bits> <cycle_accurate> <branch_output>",
2084 },
2085 {
2086 .name = "info",
2087 .handler = &handle_etm_info_command,
2088 .mode = COMMAND_EXEC,
2089 .help = "display info about the current target's ETM",
2090 },
2091 {
2092 .name = "status",
2093 .handler = &handle_etm_status_command,
2094 .mode = COMMAND_EXEC,
2095 .help = "display current target's ETM status",
2096 },
2097 {
2098 .name = "start",
2099 .handler = &handle_etm_start_command,
2100 .mode = COMMAND_EXEC,
2101 .help = "start ETM trace collection",
2102 },
2103 {
2104 .name = "stop",
2105 .handler = &handle_etm_stop_command,
2106 .mode = COMMAND_EXEC,
2107 .help = "stop ETM trace collection",
2108 },
2109 {
2110 .name = "analyze",
2111 .handler = &handle_etm_analyze_command,
2112 .mode = COMMAND_EXEC,
2113 .help = "anaylze collected ETM trace",
2114 },
2115 {
2116 .name = "image",
2117 .handler = &handle_etm_image_command,
2118 .mode = COMMAND_EXEC,
2119 .help = "load image from <file> [base address]",
2120 },
2121 {
2122 .name = "dump",
2123 .handler = &handle_etm_dump_command,
2124 .mode = COMMAND_EXEC,
2125 .help = "dump captured trace data <file>",
2126 },
2127 {
2128 .name = "load",
2129 .handler = &handle_etm_load_command,
2130 .mode = COMMAND_EXEC,
2131 .help = "load trace data for analysis <file>",
2132 },
2133 COMMAND_REGISTRATION_DONE
2134 };
2135
2136 static int etm_register_user_commands(struct command_context *cmd_ctx)
2137 {
2138 struct command *etm_cmd = command_find_in_context(cmd_ctx, "etm");
2139 return register_commands(cmd_ctx, etm_cmd, etm_exec_command_handlers);
2140 }
Generic flash access through boundary scans