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ETM: rename registers, doc tweaks
[openocd.git] / src / target / etm.c
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 "etm.h"
25 #include "etb.h"
26 #include "image.h"
27 #include "arm7_9_common.h"
28 #include "arm_disassembler.h"
29
30
31 /*
32 * ARM "Embedded Trace Macrocell" (ETM) support -- direct JTAG access.
33 *
34 * ETM modules collect instruction and/or data trace information, compress
35 * it, and transfer it to a debugging host through either a (buffered) trace
36 * port (often a 38-pin Mictor connector) or an Embedded Trace Buffer (ETB).
37 *
38 * There are several generations of these modules. Original versions have
39 * JTAG access through a dedicated scan chain. Recent versions have added
40 * access via coprocessor instructions, memory addressing, and the ARM Debug
41 * Interface v5 (ADIv5); and phased out direct JTAG access.
42 *
43 * This code supports up to the ETMv1.3 architecture, as seen in ETM9 and
44 * most common ARM9 systems. Note: "CoreSight ETM9" implements ETMv3.2,
45 * implying non-JTAG connectivity options.
46 *
47 * Relevant documentation includes:
48 * ARM DDI 0157G ... ETM9 (r2p2) Technical Reference Manual
49 * ARM DDI 0315B ... CoreSight ETM9 (r0p1) Technical Reference Manual
50 * ARM IHI 0014O ... Embedded Trace Macrocell, Architecture Specification
51 */
52
53 #define ARRAY_SIZE(x) ((int)(sizeof(x)/sizeof((x)[0])))
54
55 enum {
56 RO, /* read/only */
57 WO, /* write/only */
58 RW, /* read/write */
59 };
60
61 struct etm_reg_info {
62 uint8_t addr;
63 uint8_t size; /* low-N of 32 bits */
64 uint8_t mode; /* RO, WO, RW */
65 uint8_t bcd_vers; /* 1.0, 2.0, etc */
66 char *name;
67 };
68
69 /*
70 * Registers 0..0x7f are JTAG-addressable using scanchain 6.
71 * (Or on some processors, through coprocessor operations.)
72 * Newer versions of ETM make some W/O registers R/W, and
73 * provide definitions for some previously-unused bits.
74 */
75
76 /* basic registers that are always there given the right ETM version */
77 static const struct etm_reg_info etm_core[] = {
78 /* NOTE: we "know" ETM_CONFIG is listed first */
79 { ETM_CONFIG, 32, RO, 0x10, "ETM_config", },
80
81 /* ETM Trace Registers */
82 { ETM_CTRL, 32, RW, 0x10, "ETM_ctrl", },
83 { ETM_TRIG_EVENT, 17, WO, 0x10, "ETM_trig_event", },
84 { ETM_ASIC_CTRL, 8, WO, 0x10, "ETM_asic_ctrl", },
85 { ETM_STATUS, 3, RO, 0x11, "ETM_status", },
86 { ETM_SYS_CONFIG, 9, RO, 0x12, "ETM_sys_config", },
87
88 /* TraceEnable configuration */
89 { ETM_TRACE_RESOURCE_CTRL, 32, WO, 0x12, "ETM_trace_resource_ctrl", },
90 { ETM_TRACE_EN_CTRL2, 16, WO, 0x12, "ETM_trace_en_ctrl2", },
91 { ETM_TRACE_EN_EVENT, 17, WO, 0x10, "ETM_trace_en_event", },
92 { ETM_TRACE_EN_CTRL1, 26, WO, 0x10, "ETM_trace_en_ctrl1", },
93
94 /* ViewData configuration (data trace) */
95 { ETM_VIEWDATA_EVENT, 17, WO, 0x10, "ETM_viewdata_event", },
96 { ETM_VIEWDATA_CTRL1, 32, WO, 0x10, "ETM_viewdata_ctrl1", },
97 { ETM_VIEWDATA_CTRL2, 32, WO, 0x10, "ETM_viewdata_ctrl2", },
98 { ETM_VIEWDATA_CTRL3, 17, WO, 0x10, "ETM_viewdata_ctrl3", },
99
100 /* REVISIT exclude VIEWDATA_CTRL2 when it's not there */
101
102 { 0x78, 12, WO, 0x20, "ETM_sync_freq", },
103 { 0x79, 32, RO, 0x20, "ETM_id", },
104 };
105
106 static const struct etm_reg_info etm_fifofull[] = {
107 /* FIFOFULL configuration */
108 { ETM_FIFOFULL_REGION, 25, WO, 0x10, "ETM_fifofull_region", },
109 { ETM_FIFOFULL_LEVEL, 8, WO, 0x10, "ETM_fifofull_level", },
110 };
111
112 static const struct etm_reg_info etm_addr_comp[] = {
113 /* Address comparator register pairs */
114 #define ADDR_COMPARATOR(i) \
115 { ETM_ADDR_COMPARATOR_VALUE + (i) - 1, 32, WO, 0x10, \
116 "ETM_addr_" #i "_comparator_value", }, \
117 { ETM_ADDR_ACCESS_TYPE + (i) - 1, 7, WO, 0x10, \
118 "ETM_addr_" #i "_access_type", }
119 ADDR_COMPARATOR(1),
120 ADDR_COMPARATOR(2),
121 ADDR_COMPARATOR(3),
122 ADDR_COMPARATOR(4),
123 ADDR_COMPARATOR(5),
124 ADDR_COMPARATOR(6),
125 ADDR_COMPARATOR(7),
126 ADDR_COMPARATOR(8),
127
128 ADDR_COMPARATOR(9),
129 ADDR_COMPARATOR(10),
130 ADDR_COMPARATOR(11),
131 ADDR_COMPARATOR(12),
132 ADDR_COMPARATOR(13),
133 ADDR_COMPARATOR(14),
134 ADDR_COMPARATOR(15),
135 ADDR_COMPARATOR(16),
136 #undef ADDR_COMPARATOR
137 };
138
139 static const struct etm_reg_info etm_data_comp[] = {
140 /* Data Value Comparators (NOTE: odd addresses are reserved) */
141 #define DATA_COMPARATOR(i) \
142 { ETM_DATA_COMPARATOR_VALUE + 2*(i) - 1, 32, WO, 0x10, \
143 "ETM_data_" #i "_comparator_value", }, \
144 { ETM_DATA_COMPARATOR_MASK + 2*(i) - 1, 32, WO, 0x10, \
145 "ETM_data_" #i "_comparator_mask", }
146 DATA_COMPARATOR(1),
147 DATA_COMPARATOR(2),
148 DATA_COMPARATOR(3),
149 DATA_COMPARATOR(4),
150 DATA_COMPARATOR(5),
151 DATA_COMPARATOR(6),
152 DATA_COMPARATOR(7),
153 DATA_COMPARATOR(8),
154 #undef DATA_COMPARATOR
155 };
156
157 static const struct etm_reg_info etm_counters[] = {
158 #define ETM_COUNTER(i) \
159 { ETM_COUNTER_RELOAD_VALUE + (i) - 1, 16, WO, 0x10, \
160 "ETM_counter_" #i "_reload_value", }, \
161 { ETM_COUNTER_ENABLE + (i) - 1, 18, WO, 0x10, \
162 "ETM_counter_" #i "_enable", }, \
163 { ETM_COUNTER_RELOAD_EVENT + (i) - 1, 17, WO, 0x10, \
164 "ETM_counter_" #i "_reload_event", }, \
165 { ETM_COUNTER_VALUE + (i) - 1, 16, RO, 0x10, \
166 "ETM_counter_" #i "_value", }
167 ETM_COUNTER(1),
168 ETM_COUNTER(2),
169 ETM_COUNTER(3),
170 ETM_COUNTER(4),
171 #undef ETM_COUNTER
172 };
173
174 static const struct etm_reg_info etm_sequencer[] = {
175 #define ETM_SEQ(i) \
176 { ETM_SEQUENCER_EVENT + (i), 17, WO, 0x10, \
177 "ETM_sequencer_event" #i, }
178 ETM_SEQ(0), /* 1->2 */
179 ETM_SEQ(1), /* 2->1 */
180 ETM_SEQ(2), /* 2->3 */
181 ETM_SEQ(3), /* 3->1 */
182 ETM_SEQ(4), /* 3->2 */
183 ETM_SEQ(5), /* 1->3 */
184 #undef ETM_SEQ
185 /* 0x66 reserved */
186 { ETM_SEQUENCER_STATE, 2, RO, 0x10, "ETM_sequencer_state", },
187 };
188
189 static const struct etm_reg_info etm_outputs[] = {
190 #define ETM_OUTPUT(i) \
191 { ETM_EXTERNAL_OUTPUT + (i) - 1, 17, WO, 0x10, \
192 "ETM_external_output" #i, }
193
194 ETM_OUTPUT(1),
195 ETM_OUTPUT(2),
196 ETM_OUTPUT(3),
197 ETM_OUTPUT(4),
198 #undef ETM_OUTPUT
199 };
200
201 #if 0
202 /* registers from 0x6c..0x7f were added after ETMv1.3 */
203
204 /* Context ID Comparators */
205 { 0x6c, 32, RO, 0x20, "ETM_contextid_comparator_value1", }
206 { 0x6d, 32, RO, 0x20, "ETM_contextid_comparator_value2", }
207 { 0x6e, 32, RO, 0x20, "ETM_contextid_comparator_value3", }
208 { 0x6f, 32, RO, 0x20, "ETM_contextid_comparator_mask", }
209 #endif
210
211 static int etm_reg_arch_type = -1;
212
213 static int etm_get_reg(reg_t *reg);
214 static int etm_read_reg_w_check(reg_t *reg,
215 uint8_t* check_value, uint8_t* check_mask);
216 static int etm_register_user_commands(struct command_context_s *cmd_ctx);
217 static int etm_set_reg_w_exec(reg_t *reg, uint8_t *buf);
218 static int etm_write_reg(reg_t *reg, uint32_t value);
219
220 static command_t *etm_cmd;
221
222
223 /* Look up register by ID ... most ETM instances only
224 * support a subset of the possible registers.
225 */
226 static reg_t *etm_reg_lookup(etm_context_t *etm_ctx, unsigned id)
227 {
228 reg_cache_t *cache = etm_ctx->reg_cache;
229 int i;
230
231 for (i = 0; i < cache->num_regs; i++) {
232 struct etm_reg_s *reg = cache->reg_list[i].arch_info;
233
234 if (reg->reg_info->addr == id)
235 return &cache->reg_list[i];
236 }
237
238 /* caller asking for nonexistent register is a bug! */
239 /* REVISIT say which of the N targets was involved */
240 LOG_ERROR("ETM: register 0x%02x not available", id);
241 return NULL;
242 }
243
244 static void etm_reg_add(unsigned bcd_vers, arm_jtag_t *jtag_info,
245 reg_cache_t *cache, etm_reg_t *ereg,
246 const struct etm_reg_info *r, unsigned nreg)
247 {
248 reg_t *reg = cache->reg_list;
249
250 reg += cache->num_regs;
251 ereg += cache->num_regs;
252
253 /* add up to "nreg" registers from "r", if supported by this
254 * version of the ETM, to the specified cache.
255 */
256 for (; nreg--; r++) {
257
258 /* this ETM may be too old to have some registers */
259 if (r->bcd_vers > bcd_vers)
260 continue;
261
262 reg->name = r->name;
263 reg->size = r->size;
264 reg->value = &ereg->value;
265 reg->arch_info = ereg;
266 reg->arch_type = etm_reg_arch_type;
267 reg++;
268 cache->num_regs++;
269
270 ereg->reg_info = r;
271 ereg->jtag_info = jtag_info;
272 ereg++;
273 }
274 }
275
276 reg_cache_t *etm_build_reg_cache(target_t *target,
277 arm_jtag_t *jtag_info, etm_context_t *etm_ctx)
278 {
279 reg_cache_t *reg_cache = malloc(sizeof(reg_cache_t));
280 reg_t *reg_list = NULL;
281 etm_reg_t *arch_info = NULL;
282 unsigned bcd_vers, config;
283
284 /* register a register arch-type for etm registers only once */
285 if (etm_reg_arch_type == -1)
286 etm_reg_arch_type = register_reg_arch_type(etm_get_reg,
287 etm_set_reg_w_exec);
288
289 /* the actual registers are kept in two arrays */
290 reg_list = calloc(128, sizeof(reg_t));
291 arch_info = calloc(128, sizeof(etm_reg_t));
292
293 /* fill in values for the reg cache */
294 reg_cache->name = "etm registers";
295 reg_cache->next = NULL;
296 reg_cache->reg_list = reg_list;
297 reg_cache->num_regs = 0;
298
299 /* add ETM_CONFIG, then parse its values to see
300 * which other registers exist in this ETM
301 */
302 etm_reg_add(0x10, jtag_info, reg_cache, arch_info,
303 etm_core, 1);
304
305 etm_get_reg(reg_list);
306 etm_ctx->config = buf_get_u32((void *)&arch_info->value, 0, 32);
307 config = etm_ctx->config;
308
309 /* figure ETM version then add base registers */
310 if (config & (1 << 31)) {
311 bcd_vers = 0x20;
312 LOG_WARNING("ETMv2+ support is incomplete");
313
314 /* REVISIT read ID register, distinguish ETMv3.3 etc;
315 * don't presume trace start/stop support is present;
316 * and include any context ID comparator registers.
317 */
318 } else {
319 switch (config >> 28) {
320 case 7:
321 case 5:
322 case 3:
323 bcd_vers = 0x13;
324 break;
325 case 4:
326 case 2:
327 bcd_vers = 0x12;
328 break;
329 case 1:
330 bcd_vers = 0x11;
331 break;
332 case 0:
333 bcd_vers = 0x10;
334 break;
335 default:
336 LOG_WARNING("Bad ETMv1 protocol %d", config >> 28);
337 free(reg_cache);
338 free(reg_list);
339 free(arch_info);
340 return ERROR_OK;
341 }
342 }
343 etm_ctx->bcd_vers = bcd_vers;
344 LOG_INFO("ETM v%d.%d", bcd_vers >> 4, bcd_vers & 0xf);
345
346 etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info,
347 etm_core + 1, ARRAY_SIZE(etm_core) - 1);
348
349 /* address and data comparators; counters; outputs */
350 etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info,
351 etm_addr_comp, 4 * (0x0f & (config >> 0)));
352 etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info,
353 etm_data_comp, 2 * (0x0f & (config >> 4)));
354 etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info,
355 etm_counters, 4 * (0x07 & (config >> 13)));
356 etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info,
357 etm_outputs, (0x07 & (config >> 20)));
358
359 /* FIFOFULL presence is optional
360 * REVISIT for ETMv1.2 and later, don't bother adding this
361 * unless ETM_SYS_CONFIG says it's also *supported* ...
362 */
363 if (config & (1 << 23))
364 etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info,
365 etm_fifofull, ARRAY_SIZE(etm_fifofull));
366
367 /* sequencer is optional (for state-dependant triggering) */
368 if (config & (1 << 16))
369 etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info,
370 etm_sequencer, ARRAY_SIZE(etm_sequencer));
371
372 /* REVISIT could realloc and likely save half the memory
373 * in the two chunks we allocated...
374 */
375
376 /* the ETM might have an ETB connected */
377 if (strcmp(etm_ctx->capture_driver->name, "etb") == 0)
378 {
379 etb_t *etb = etm_ctx->capture_driver_priv;
380
381 if (!etb)
382 {
383 LOG_ERROR("etb selected as etm capture driver, but no ETB configured");
384 free(reg_cache);
385 free(reg_list);
386 free(arch_info);
387 return ERROR_OK;
388 }
389
390 reg_cache->next = etb_build_reg_cache(etb);
391
392 etb->reg_cache = reg_cache->next;
393 }
394
395
396 return reg_cache;
397 }
398
399 static int etm_read_reg(reg_t *reg)
400 {
401 return etm_read_reg_w_check(reg, NULL, NULL);
402 }
403
404 static int etm_store_reg(reg_t *reg)
405 {
406 return etm_write_reg(reg, buf_get_u32(reg->value, 0, reg->size));
407 }
408
409 int etm_setup(target_t *target)
410 {
411 int retval;
412 uint32_t etm_ctrl_value;
413 armv4_5_common_t *armv4_5 = target->arch_info;
414 arm7_9_common_t *arm7_9 = armv4_5->arch_info;
415 etm_context_t *etm_ctx = arm7_9->etm_ctx;
416 reg_t *etm_ctrl_reg;
417
418 etm_ctrl_reg = etm_reg_lookup(etm_ctx, ETM_CTRL);
419 if (!etm_ctrl_reg)
420 return ERROR_OK;
421
422 /* initialize some ETM control register settings */
423 etm_get_reg(etm_ctrl_reg);
424 etm_ctrl_value = buf_get_u32(etm_ctrl_reg->value, 0, etm_ctrl_reg->size);
425
426 /* clear the ETM powerdown bit (0) */
427 etm_ctrl_value &= ~0x1;
428
429 /* configure port width (6:4), mode (17:16) and clocking (13) */
430 etm_ctrl_value = (etm_ctrl_value &
431 ~ETM_PORT_WIDTH_MASK & ~ETM_PORT_MODE_MASK & ~ETM_PORT_CLOCK_MASK)
432 | etm_ctx->portmode;
433
434 buf_set_u32(etm_ctrl_reg->value, 0, etm_ctrl_reg->size, etm_ctrl_value);
435 etm_store_reg(etm_ctrl_reg);
436
437 if ((retval = jtag_execute_queue()) != ERROR_OK)
438 return retval;
439
440 if ((retval = etm_ctx->capture_driver->init(etm_ctx)) != ERROR_OK)
441 {
442 LOG_ERROR("ETM capture driver initialization failed");
443 return retval;
444 }
445 return ERROR_OK;
446 }
447
448 static int etm_get_reg(reg_t *reg)
449 {
450 int retval;
451
452 if ((retval = etm_read_reg(reg)) != ERROR_OK)
453 {
454 LOG_ERROR("BUG: error scheduling etm register read");
455 return retval;
456 }
457
458 if ((retval = jtag_execute_queue()) != ERROR_OK)
459 {
460 LOG_ERROR("register read failed");
461 return retval;
462 }
463
464 return ERROR_OK;
465 }
466
467 static int etm_read_reg_w_check(reg_t *reg,
468 uint8_t* check_value, uint8_t* check_mask)
469 {
470 etm_reg_t *etm_reg = reg->arch_info;
471 const struct etm_reg_info *r = etm_reg->reg_info;
472 uint8_t reg_addr = r->addr & 0x7f;
473 scan_field_t fields[3];
474
475 if (etm_reg->reg_info->mode == WO) {
476 LOG_ERROR("BUG: can't read write-only register %s", r->name);
477 return ERROR_INVALID_ARGUMENTS;
478 }
479
480 LOG_DEBUG("%s (%u)", r->name, reg_addr);
481
482 jtag_set_end_state(TAP_IDLE);
483 arm_jtag_scann(etm_reg->jtag_info, 0x6);
484 arm_jtag_set_instr(etm_reg->jtag_info, etm_reg->jtag_info->intest_instr, NULL);
485
486 fields[0].tap = etm_reg->jtag_info->tap;
487 fields[0].num_bits = 32;
488 fields[0].out_value = reg->value;
489 fields[0].in_value = NULL;
490 fields[0].check_value = NULL;
491 fields[0].check_mask = NULL;
492
493 fields[1].tap = etm_reg->jtag_info->tap;
494 fields[1].num_bits = 7;
495 fields[1].out_value = malloc(1);
496 buf_set_u32(fields[1].out_value, 0, 7, reg_addr);
497 fields[1].in_value = NULL;
498 fields[1].check_value = NULL;
499 fields[1].check_mask = NULL;
500
501 fields[2].tap = etm_reg->jtag_info->tap;
502 fields[2].num_bits = 1;
503 fields[2].out_value = malloc(1);
504 buf_set_u32(fields[2].out_value, 0, 1, 0);
505 fields[2].in_value = NULL;
506 fields[2].check_value = NULL;
507 fields[2].check_mask = NULL;
508
509 jtag_add_dr_scan(3, fields, jtag_get_end_state());
510
511 fields[0].in_value = reg->value;
512 fields[0].check_value = check_value;
513 fields[0].check_mask = check_mask;
514
515 jtag_add_dr_scan_check(3, fields, jtag_get_end_state());
516
517 free(fields[1].out_value);
518 free(fields[2].out_value);
519
520 return ERROR_OK;
521 }
522
523 static int etm_set_reg(reg_t *reg, uint32_t value)
524 {
525 int retval;
526
527 if ((retval = etm_write_reg(reg, value)) != ERROR_OK)
528 {
529 LOG_ERROR("BUG: error scheduling etm register write");
530 return retval;
531 }
532
533 buf_set_u32(reg->value, 0, reg->size, value);
534 reg->valid = 1;
535 reg->dirty = 0;
536
537 return ERROR_OK;
538 }
539
540 static int etm_set_reg_w_exec(reg_t *reg, uint8_t *buf)
541 {
542 int retval;
543
544 etm_set_reg(reg, buf_get_u32(buf, 0, reg->size));
545
546 if ((retval = jtag_execute_queue()) != ERROR_OK)
547 {
548 LOG_ERROR("register write failed");
549 return retval;
550 }
551 return ERROR_OK;
552 }
553
554 static int etm_write_reg(reg_t *reg, uint32_t value)
555 {
556 etm_reg_t *etm_reg = reg->arch_info;
557 const struct etm_reg_info *r = etm_reg->reg_info;
558 uint8_t reg_addr = r->addr & 0x7f;
559 scan_field_t fields[3];
560
561 if (etm_reg->reg_info->mode == RO) {
562 LOG_ERROR("BUG: can't write read--only register %s", r->name);
563 return ERROR_INVALID_ARGUMENTS;
564 }
565
566 LOG_DEBUG("%s (%u): 0x%8.8" PRIx32 "", r->name, reg_addr, value);
567
568 jtag_set_end_state(TAP_IDLE);
569 arm_jtag_scann(etm_reg->jtag_info, 0x6);
570 arm_jtag_set_instr(etm_reg->jtag_info, etm_reg->jtag_info->intest_instr, NULL);
571
572 fields[0].tap = etm_reg->jtag_info->tap;
573 fields[0].num_bits = 32;
574 uint8_t tmp1[4];
575 fields[0].out_value = tmp1;
576 buf_set_u32(fields[0].out_value, 0, 32, value);
577 fields[0].in_value = NULL;
578
579 fields[1].tap = etm_reg->jtag_info->tap;
580 fields[1].num_bits = 7;
581 uint8_t tmp2;
582 fields[1].out_value = &tmp2;
583 buf_set_u32(fields[1].out_value, 0, 7, reg_addr);
584 fields[1].in_value = NULL;
585
586 fields[2].tap = etm_reg->jtag_info->tap;
587 fields[2].num_bits = 1;
588 uint8_t tmp3;
589 fields[2].out_value = &tmp3;
590 buf_set_u32(fields[2].out_value, 0, 1, 1);
591 fields[2].in_value = NULL;
592
593 jtag_add_dr_scan(3, fields, jtag_get_end_state());
594
595 return ERROR_OK;
596 }
597
598
599 /* ETM trace analysis functionality
600 *
601 */
602 extern etm_capture_driver_t etm_dummy_capture_driver;
603 #if BUILD_OOCD_TRACE == 1
604 extern etm_capture_driver_t oocd_trace_capture_driver;
605 #endif
606
607 static etm_capture_driver_t *etm_capture_drivers[] =
608 {
609 &etb_capture_driver,
610 &etm_dummy_capture_driver,
611 #if BUILD_OOCD_TRACE == 1
612 &oocd_trace_capture_driver,
613 #endif
614 NULL
615 };
616
617 static int etm_read_instruction(etm_context_t *ctx, arm_instruction_t *instruction)
618 {
619 int i;
620 int section = -1;
621 uint32_t size_read;
622 uint32_t opcode;
623 int retval;
624
625 if (!ctx->image)
626 return ERROR_TRACE_IMAGE_UNAVAILABLE;
627
628 /* search for the section the current instruction belongs to */
629 for (i = 0; i < ctx->image->num_sections; i++)
630 {
631 if ((ctx->image->sections[i].base_address <= ctx->current_pc) &&
632 (ctx->image->sections[i].base_address + ctx->image->sections[i].size > ctx->current_pc))
633 {
634 section = i;
635 break;
636 }
637 }
638
639 if (section == -1)
640 {
641 /* current instruction couldn't be found in the image */
642 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
643 }
644
645 if (ctx->core_state == ARMV4_5_STATE_ARM)
646 {
647 uint8_t buf[4];
648 if ((retval = image_read_section(ctx->image, section,
649 ctx->current_pc - ctx->image->sections[section].base_address,
650 4, buf, &size_read)) != ERROR_OK)
651 {
652 LOG_ERROR("error while reading instruction: %i", retval);
653 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
654 }
655 opcode = target_buffer_get_u32(ctx->target, buf);
656 arm_evaluate_opcode(opcode, ctx->current_pc, instruction);
657 }
658 else if (ctx->core_state == ARMV4_5_STATE_THUMB)
659 {
660 uint8_t buf[2];
661 if ((retval = image_read_section(ctx->image, section,
662 ctx->current_pc - ctx->image->sections[section].base_address,
663 2, buf, &size_read)) != ERROR_OK)
664 {
665 LOG_ERROR("error while reading instruction: %i", retval);
666 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
667 }
668 opcode = target_buffer_get_u16(ctx->target, buf);
669 thumb_evaluate_opcode(opcode, ctx->current_pc, instruction);
670 }
671 else if (ctx->core_state == ARMV4_5_STATE_JAZELLE)
672 {
673 LOG_ERROR("BUG: tracing of jazelle code not supported");
674 exit(-1);
675 }
676 else
677 {
678 LOG_ERROR("BUG: unknown core state encountered");
679 exit(-1);
680 }
681
682 return ERROR_OK;
683 }
684
685 static int etmv1_next_packet(etm_context_t *ctx, uint8_t *packet, int apo)
686 {
687 while (ctx->data_index < ctx->trace_depth)
688 {
689 /* if the caller specified an address packet offset, skip until the
690 * we reach the n-th cycle marked with tracesync */
691 if (apo > 0)
692 {
693 if (ctx->trace_data[ctx->data_index].flags & ETMV1_TRACESYNC_CYCLE)
694 apo--;
695
696 if (apo > 0)
697 {
698 ctx->data_index++;
699 ctx->data_half = 0;
700 }
701 continue;
702 }
703
704 /* no tracedata output during a TD cycle
705 * or in a trigger cycle */
706 if ((ctx->trace_data[ctx->data_index].pipestat == STAT_TD)
707 || (ctx->trace_data[ctx->data_index].flags & ETMV1_TRIGGER_CYCLE))
708 {
709 ctx->data_index++;
710 ctx->data_half = 0;
711 continue;
712 }
713
714 if ((ctx->portmode & ETM_PORT_WIDTH_MASK) == ETM_PORT_16BIT)
715 {
716 if (ctx->data_half == 0)
717 {
718 *packet = ctx->trace_data[ctx->data_index].packet & 0xff;
719 ctx->data_half = 1;
720 }
721 else
722 {
723 *packet = (ctx->trace_data[ctx->data_index].packet & 0xff00) >> 8;
724 ctx->data_half = 0;
725 ctx->data_index++;
726 }
727 }
728 else if ((ctx->portmode & ETM_PORT_WIDTH_MASK) == ETM_PORT_8BIT)
729 {
730 *packet = ctx->trace_data[ctx->data_index].packet & 0xff;
731 ctx->data_index++;
732 }
733 else
734 {
735 /* on a 4-bit port, a packet will be output during two consecutive cycles */
736 if (ctx->data_index > (ctx->trace_depth - 2))
737 return -1;
738
739 *packet = ctx->trace_data[ctx->data_index].packet & 0xf;
740 *packet |= (ctx->trace_data[ctx->data_index + 1].packet & 0xf) << 4;
741 ctx->data_index += 2;
742 }
743
744 return 0;
745 }
746
747 return -1;
748 }
749
750 static int etmv1_branch_address(etm_context_t *ctx)
751 {
752 int retval;
753 uint8_t packet;
754 int shift = 0;
755 int apo;
756 uint32_t i;
757
758 /* quit analysis if less than two cycles are left in the trace
759 * because we can't extract the APO */
760 if (ctx->data_index > (ctx->trace_depth - 2))
761 return -1;
762
763 /* a BE could be output during an APO cycle, skip the current
764 * and continue with the new one */
765 if (ctx->trace_data[ctx->pipe_index + 1].pipestat & 0x4)
766 return 1;
767 if (ctx->trace_data[ctx->pipe_index + 2].pipestat & 0x4)
768 return 2;
769
770 /* address packet offset encoded in the next two cycles' pipestat bits */
771 apo = ctx->trace_data[ctx->pipe_index + 1].pipestat & 0x3;
772 apo |= (ctx->trace_data[ctx->pipe_index + 2].pipestat & 0x3) << 2;
773
774 /* count number of tracesync cycles between current pipe_index and data_index
775 * i.e. the number of tracesyncs that data_index already passed by
776 * to subtract them from the APO */
777 for (i = ctx->pipe_index; i < ctx->data_index; i++)
778 {
779 if (ctx->trace_data[ctx->pipe_index + 1].pipestat & ETMV1_TRACESYNC_CYCLE)
780 apo--;
781 }
782
783 /* extract up to four 7-bit packets */
784 do {
785 if ((retval = etmv1_next_packet(ctx, &packet, (shift == 0) ? apo + 1 : 0)) != 0)
786 return -1;
787 ctx->last_branch &= ~(0x7f << shift);
788 ctx->last_branch |= (packet & 0x7f) << shift;
789 shift += 7;
790 } while ((packet & 0x80) && (shift < 28));
791
792 /* one last packet holding 4 bits of the address, plus the branch reason code */
793 if ((shift == 28) && (packet & 0x80))
794 {
795 if ((retval = etmv1_next_packet(ctx, &packet, 0)) != 0)
796 return -1;
797 ctx->last_branch &= 0x0fffffff;
798 ctx->last_branch |= (packet & 0x0f) << 28;
799 ctx->last_branch_reason = (packet & 0x70) >> 4;
800 shift += 4;
801 }
802 else
803 {
804 ctx->last_branch_reason = 0;
805 }
806
807 if (shift == 32)
808 {
809 ctx->pc_ok = 1;
810 }
811
812 /* if a full address was output, we might have branched into Jazelle state */
813 if ((shift == 32) && (packet & 0x80))
814 {
815 ctx->core_state = ARMV4_5_STATE_JAZELLE;
816 }
817 else
818 {
819 /* if we didn't branch into Jazelle state, the current processor state is
820 * encoded in bit 0 of the branch target address */
821 if (ctx->last_branch & 0x1)
822 {
823 ctx->core_state = ARMV4_5_STATE_THUMB;
824 ctx->last_branch &= ~0x1;
825 }
826 else
827 {
828 ctx->core_state = ARMV4_5_STATE_ARM;
829 ctx->last_branch &= ~0x3;
830 }
831 }
832
833 return 0;
834 }
835
836 static int etmv1_data(etm_context_t *ctx, int size, uint32_t *data)
837 {
838 int j;
839 uint8_t buf[4];
840 int retval;
841
842 for (j = 0; j < size; j++)
843 {
844 if ((retval = etmv1_next_packet(ctx, &buf[j], 0)) != 0)
845 return -1;
846 }
847
848 if (size == 8)
849 {
850 LOG_ERROR("TODO: add support for 64-bit values");
851 return -1;
852 }
853 else if (size == 4)
854 *data = target_buffer_get_u32(ctx->target, buf);
855 else if (size == 2)
856 *data = target_buffer_get_u16(ctx->target, buf);
857 else if (size == 1)
858 *data = buf[0];
859 else
860 return -1;
861
862 return 0;
863 }
864
865 static int etmv1_analyze_trace(etm_context_t *ctx, struct command_context_s *cmd_ctx)
866 {
867 int retval;
868 arm_instruction_t instruction;
869
870 /* read the trace data if it wasn't read already */
871 if (ctx->trace_depth == 0)
872 ctx->capture_driver->read_trace(ctx);
873
874 /* start at the beginning of the captured trace */
875 ctx->pipe_index = 0;
876 ctx->data_index = 0;
877 ctx->data_half = 0;
878
879 /* neither the PC nor the data pointer are valid */
880 ctx->pc_ok = 0;
881 ctx->ptr_ok = 0;
882
883 while (ctx->pipe_index < ctx->trace_depth)
884 {
885 uint8_t pipestat = ctx->trace_data[ctx->pipe_index].pipestat;
886 uint32_t next_pc = ctx->current_pc;
887 uint32_t old_data_index = ctx->data_index;
888 uint32_t old_data_half = ctx->data_half;
889 uint32_t old_index = ctx->pipe_index;
890 uint32_t last_instruction = ctx->last_instruction;
891 uint32_t cycles = 0;
892 int current_pc_ok = ctx->pc_ok;
893
894 if (ctx->trace_data[ctx->pipe_index].flags & ETMV1_TRIGGER_CYCLE)
895 {
896 command_print(cmd_ctx, "--- trigger ---");
897 }
898
899 /* instructions execute in IE/D or BE/D cycles */
900 if ((pipestat == STAT_IE) || (pipestat == STAT_ID))
901 ctx->last_instruction = ctx->pipe_index;
902
903 /* if we don't have a valid pc skip until we reach an indirect branch */
904 if ((!ctx->pc_ok) && (pipestat != STAT_BE))
905 {
906 ctx->pipe_index++;
907 continue;
908 }
909
910 /* any indirect branch could have interrupted instruction flow
911 * - the branch reason code could indicate a trace discontinuity
912 * - a branch to the exception vectors indicates an exception
913 */
914 if ((pipestat == STAT_BE) || (pipestat == STAT_BD))
915 {
916 /* backup current data index, to be able to consume the branch address
917 * before examining data address and values
918 */
919 old_data_index = ctx->data_index;
920 old_data_half = ctx->data_half;
921
922 ctx->last_instruction = ctx->pipe_index;
923
924 if ((retval = etmv1_branch_address(ctx)) != 0)
925 {
926 /* negative return value from etmv1_branch_address means we ran out of packets,
927 * quit analysing the trace */
928 if (retval < 0)
929 break;
930
931 /* a positive return values means the current branch was abandoned,
932 * and a new branch was encountered in cycle ctx->pipe_index + retval;
933 */
934 LOG_WARNING("abandoned branch encountered, correctnes of analysis uncertain");
935 ctx->pipe_index += retval;
936 continue;
937 }
938
939 /* skip over APO cycles */
940 ctx->pipe_index += 2;
941
942 switch (ctx->last_branch_reason)
943 {
944 case 0x0: /* normal PC change */
945 next_pc = ctx->last_branch;
946 break;
947 case 0x1: /* tracing enabled */
948 command_print(cmd_ctx, "--- tracing enabled at 0x%8.8" PRIx32 " ---", ctx->last_branch);
949 ctx->current_pc = ctx->last_branch;
950 ctx->pipe_index++;
951 continue;
952 break;
953 case 0x2: /* trace restarted after FIFO overflow */
954 command_print(cmd_ctx, "--- trace restarted after FIFO overflow at 0x%8.8" PRIx32 " ---", ctx->last_branch);
955 ctx->current_pc = ctx->last_branch;
956 ctx->pipe_index++;
957 continue;
958 break;
959 case 0x3: /* exit from debug state */
960 command_print(cmd_ctx, "--- exit from debug state at 0x%8.8" PRIx32 " ---", ctx->last_branch);
961 ctx->current_pc = ctx->last_branch;
962 ctx->pipe_index++;
963 continue;
964 break;
965 case 0x4: /* periodic synchronization point */
966 next_pc = ctx->last_branch;
967 /* if we had no valid PC prior to this synchronization point,
968 * we have to move on with the next trace cycle
969 */
970 if (!current_pc_ok)
971 {
972 command_print(cmd_ctx, "--- periodic synchronization point at 0x%8.8" PRIx32 " ---", next_pc);
973 ctx->current_pc = next_pc;
974 ctx->pipe_index++;
975 continue;
976 }
977 break;
978 default: /* reserved */
979 LOG_ERROR("BUG: branch reason code 0x%" PRIx32 " is reserved", ctx->last_branch_reason);
980 exit(-1);
981 break;
982 }
983
984 /* if we got here the branch was a normal PC change
985 * (or a periodic synchronization point, which means the same for that matter)
986 * if we didn't accquire a complete PC continue with the next cycle
987 */
988 if (!ctx->pc_ok)
989 continue;
990
991 /* indirect branch to the exception vector means an exception occured */
992 if ((ctx->last_branch <= 0x20)
993 || ((ctx->last_branch >= 0xffff0000) && (ctx->last_branch <= 0xffff0020)))
994 {
995 if ((ctx->last_branch & 0xff) == 0x10)
996 {
997 command_print(cmd_ctx, "data abort");
998 }
999 else
1000 {
1001 command_print(cmd_ctx, "exception vector 0x%2.2" PRIx32 "", ctx->last_branch);
1002 ctx->current_pc = ctx->last_branch;
1003 ctx->pipe_index++;
1004 continue;
1005 }
1006 }
1007 }
1008
1009 /* an instruction was executed (or not, depending on the condition flags)
1010 * retrieve it from the image for displaying */
1011 if (ctx->pc_ok && (pipestat != STAT_WT) && (pipestat != STAT_TD) &&
1012 !(((pipestat == STAT_BE) || (pipestat == STAT_BD)) &&
1013 ((ctx->last_branch_reason != 0x0) && (ctx->last_branch_reason != 0x4))))
1014 {
1015 if ((retval = etm_read_instruction(ctx, &instruction)) != ERROR_OK)
1016 {
1017 /* can't continue tracing with no image available */
1018 if (retval == ERROR_TRACE_IMAGE_UNAVAILABLE)
1019 {
1020 return retval;
1021 }
1022 else if (retval == ERROR_TRACE_INSTRUCTION_UNAVAILABLE)
1023 {
1024 /* TODO: handle incomplete images
1025 * for now we just quit the analsysis*/
1026 return retval;
1027 }
1028 }
1029
1030 cycles = old_index - last_instruction;
1031 }
1032
1033 if ((pipestat == STAT_ID) || (pipestat == STAT_BD))
1034 {
1035 uint32_t new_data_index = ctx->data_index;
1036 uint32_t new_data_half = ctx->data_half;
1037
1038 /* in case of a branch with data, the branch target address was consumed before
1039 * we temporarily go back to the saved data index */
1040 if (pipestat == STAT_BD)
1041 {
1042 ctx->data_index = old_data_index;
1043 ctx->data_half = old_data_half;
1044 }
1045
1046 if (ctx->tracemode & ETMV1_TRACE_ADDR)
1047 {
1048 uint8_t packet;
1049 int shift = 0;
1050
1051 do {
1052 if ((retval = etmv1_next_packet(ctx, &packet, 0)) != 0)
1053 return ERROR_ETM_ANALYSIS_FAILED;
1054 ctx->last_ptr &= ~(0x7f << shift);
1055 ctx->last_ptr |= (packet & 0x7f) << shift;
1056 shift += 7;
1057 } while ((packet & 0x80) && (shift < 32));
1058
1059 if (shift >= 32)
1060 ctx->ptr_ok = 1;
1061
1062 if (ctx->ptr_ok)
1063 {
1064 command_print(cmd_ctx, "address: 0x%8.8" PRIx32 "", ctx->last_ptr);
1065 }
1066 }
1067
1068 if (ctx->tracemode & ETMV1_TRACE_DATA)
1069 {
1070 if ((instruction.type == ARM_LDM) || (instruction.type == ARM_STM))
1071 {
1072 int i;
1073 for (i = 0; i < 16; i++)
1074 {
1075 if (instruction.info.load_store_multiple.register_list & (1 << i))
1076 {
1077 uint32_t data;
1078 if (etmv1_data(ctx, 4, &data) != 0)
1079 return ERROR_ETM_ANALYSIS_FAILED;
1080 command_print(cmd_ctx, "data: 0x%8.8" PRIx32 "", data);
1081 }
1082 }
1083 }
1084 else if ((instruction.type >= ARM_LDR) && (instruction.type <= ARM_STRH))
1085 {
1086 uint32_t data;
1087 if (etmv1_data(ctx, arm_access_size(&instruction), &data) != 0)
1088 return ERROR_ETM_ANALYSIS_FAILED;
1089 command_print(cmd_ctx, "data: 0x%8.8" PRIx32 "", data);
1090 }
1091 }
1092
1093 /* restore data index after consuming BD address and data */
1094 if (pipestat == STAT_BD)
1095 {
1096 ctx->data_index = new_data_index;
1097 ctx->data_half = new_data_half;
1098 }
1099 }
1100
1101 /* adjust PC */
1102 if ((pipestat == STAT_IE) || (pipestat == STAT_ID))
1103 {
1104 if (((instruction.type == ARM_B) ||
1105 (instruction.type == ARM_BL) ||
1106 (instruction.type == ARM_BLX)) &&
1107 (instruction.info.b_bl_bx_blx.target_address != 0xffffffff))
1108 {
1109 next_pc = instruction.info.b_bl_bx_blx.target_address;
1110 }
1111 else
1112 {
1113 next_pc += (ctx->core_state == ARMV4_5_STATE_ARM) ? 4 : 2;
1114 }
1115 }
1116 else if (pipestat == STAT_IN)
1117 {
1118 next_pc += (ctx->core_state == ARMV4_5_STATE_ARM) ? 4 : 2;
1119 }
1120
1121 if ((pipestat != STAT_TD) && (pipestat != STAT_WT))
1122 {
1123 char cycles_text[32] = "";
1124
1125 /* if the trace was captured with cycle accurate tracing enabled,
1126 * output the number of cycles since the last executed instruction
1127 */
1128 if (ctx->tracemode & ETMV1_CYCLE_ACCURATE)
1129 {
1130 snprintf(cycles_text, 32, " (%i %s)",
1131 (int)cycles,
1132 (cycles == 1) ? "cycle" : "cycles");
1133 }
1134
1135 command_print(cmd_ctx, "%s%s%s",
1136 instruction.text,
1137 (pipestat == STAT_IN) ? " (not executed)" : "",
1138 cycles_text);
1139
1140 ctx->current_pc = next_pc;
1141
1142 /* packets for an instruction don't start on or before the preceding
1143 * functional pipestat (i.e. other than WT or TD)
1144 */
1145 if (ctx->data_index <= ctx->pipe_index)
1146 {
1147 ctx->data_index = ctx->pipe_index + 1;
1148 ctx->data_half = 0;
1149 }
1150 }
1151
1152 ctx->pipe_index += 1;
1153 }
1154
1155 return ERROR_OK;
1156 }
1157
1158 static int handle_etm_tracemode_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1159 {
1160 target_t *target;
1161 armv4_5_common_t *armv4_5;
1162 arm7_9_common_t *arm7_9;
1163 etmv1_tracemode_t tracemode;
1164
1165 target = get_current_target(cmd_ctx);
1166
1167 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1168 {
1169 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1170 return ERROR_OK;
1171 }
1172
1173 if (!arm7_9->etm_ctx)
1174 {
1175 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1176 return ERROR_OK;
1177 }
1178
1179 tracemode = arm7_9->etm_ctx->tracemode;
1180
1181 if (argc == 4)
1182 {
1183 /* what parts of data access are traced? */
1184 if (strcmp(args[0], "none") == 0)
1185 {
1186 tracemode = ETMV1_TRACE_NONE;
1187 }
1188 else if (strcmp(args[0], "data") == 0)
1189 {
1190 tracemode = ETMV1_TRACE_DATA;
1191 }
1192 else if (strcmp(args[0], "address") == 0)
1193 {
1194 tracemode = ETMV1_TRACE_ADDR;
1195 }
1196 else if (strcmp(args[0], "all") == 0)
1197 {
1198 tracemode = ETMV1_TRACE_DATA | ETMV1_TRACE_ADDR;
1199 }
1200 else
1201 {
1202 command_print(cmd_ctx, "invalid option '%s'", args[0]);
1203 return ERROR_OK;
1204 }
1205
1206 switch (strtol(args[1], NULL, 0))
1207 {
1208 case 0:
1209 tracemode |= ETMV1_CONTEXTID_NONE;
1210 break;
1211 case 8:
1212 tracemode |= ETMV1_CONTEXTID_8;
1213 break;
1214 case 16:
1215 tracemode |= ETMV1_CONTEXTID_16;
1216 break;
1217 case 32:
1218 tracemode |= ETMV1_CONTEXTID_32;
1219 break;
1220 default:
1221 command_print(cmd_ctx, "invalid option '%s'", args[1]);
1222 return ERROR_OK;
1223 }
1224
1225 if (strcmp(args[2], "enable") == 0)
1226 {
1227 tracemode |= ETMV1_CYCLE_ACCURATE;
1228 }
1229 else if (strcmp(args[2], "disable") == 0)
1230 {
1231 tracemode |= 0;
1232 }
1233 else
1234 {
1235 command_print(cmd_ctx, "invalid option '%s'", args[2]);
1236 return ERROR_OK;
1237 }
1238
1239 if (strcmp(args[3], "enable") == 0)
1240 {
1241 tracemode |= ETMV1_BRANCH_OUTPUT;
1242 }
1243 else if (strcmp(args[3], "disable") == 0)
1244 {
1245 tracemode |= 0;
1246 }
1247 else
1248 {
1249 command_print(cmd_ctx, "invalid option '%s'", args[2]);
1250 return ERROR_OK;
1251 }
1252
1253 /* IGNORED:
1254 * - CPRT tracing (coprocessor register transfers)
1255 * - debug request (causes debug entry on trigger)
1256 * - stall on FIFOFULL (preventing tracedata lossage)
1257 */
1258 }
1259 else if (argc != 0)
1260 {
1261 command_print(cmd_ctx, "usage: configure trace mode <none | data | address | all> <context id bits> <cycle accurate> <branch output>");
1262 return ERROR_OK;
1263 }
1264
1265 command_print(cmd_ctx, "current tracemode configuration:");
1266
1267 switch (tracemode & ETMV1_TRACE_MASK)
1268 {
1269 case ETMV1_TRACE_NONE:
1270 command_print(cmd_ctx, "data tracing: none");
1271 break;
1272 case ETMV1_TRACE_DATA:
1273 command_print(cmd_ctx, "data tracing: data only");
1274 break;
1275 case ETMV1_TRACE_ADDR:
1276 command_print(cmd_ctx, "data tracing: address only");
1277 break;
1278 case ETMV1_TRACE_DATA | ETMV1_TRACE_ADDR:
1279 command_print(cmd_ctx, "data tracing: address and data");
1280 break;
1281 }
1282
1283 switch (tracemode & ETMV1_CONTEXTID_MASK)
1284 {
1285 case ETMV1_CONTEXTID_NONE:
1286 command_print(cmd_ctx, "contextid tracing: none");
1287 break;
1288 case ETMV1_CONTEXTID_8:
1289 command_print(cmd_ctx, "contextid tracing: 8 bit");
1290 break;
1291 case ETMV1_CONTEXTID_16:
1292 command_print(cmd_ctx, "contextid tracing: 16 bit");
1293 break;
1294 case ETMV1_CONTEXTID_32:
1295 command_print(cmd_ctx, "contextid tracing: 32 bit");
1296 break;
1297 }
1298
1299 if (tracemode & ETMV1_CYCLE_ACCURATE)
1300 {
1301 command_print(cmd_ctx, "cycle-accurate tracing enabled");
1302 }
1303 else
1304 {
1305 command_print(cmd_ctx, "cycle-accurate tracing disabled");
1306 }
1307
1308 if (tracemode & ETMV1_BRANCH_OUTPUT)
1309 {
1310 command_print(cmd_ctx, "full branch address output enabled");
1311 }
1312 else
1313 {
1314 command_print(cmd_ctx, "full branch address output disabled");
1315 }
1316
1317 /* only update ETM_CTRL register if tracemode changed */
1318 if (arm7_9->etm_ctx->tracemode != tracemode)
1319 {
1320 reg_t *etm_ctrl_reg;
1321
1322 etm_ctrl_reg = etm_reg_lookup(arm7_9->etm_ctx, ETM_CTRL);
1323 if (!etm_ctrl_reg)
1324 return ERROR_OK;
1325
1326 etm_get_reg(etm_ctrl_reg);
1327
1328 buf_set_u32(etm_ctrl_reg->value, 2, 2, tracemode & ETMV1_TRACE_MASK);
1329 buf_set_u32(etm_ctrl_reg->value, 14, 2, (tracemode & ETMV1_CONTEXTID_MASK) >> 4);
1330 buf_set_u32(etm_ctrl_reg->value, 12, 1, (tracemode & ETMV1_CYCLE_ACCURATE) >> 8);
1331 buf_set_u32(etm_ctrl_reg->value, 8, 1, (tracemode & ETMV1_BRANCH_OUTPUT) >> 9);
1332 etm_store_reg(etm_ctrl_reg);
1333
1334 arm7_9->etm_ctx->tracemode = tracemode;
1335
1336 /* invalidate old trace data */
1337 arm7_9->etm_ctx->capture_status = TRACE_IDLE;
1338 if (arm7_9->etm_ctx->trace_depth > 0)
1339 {
1340 free(arm7_9->etm_ctx->trace_data);
1341 arm7_9->etm_ctx->trace_data = NULL;
1342 }
1343 arm7_9->etm_ctx->trace_depth = 0;
1344 }
1345
1346 return ERROR_OK;
1347 }
1348
1349 static int handle_etm_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1350 {
1351 target_t *target;
1352 armv4_5_common_t *armv4_5;
1353 arm7_9_common_t *arm7_9;
1354 etm_portmode_t portmode = 0x0;
1355 etm_context_t *etm_ctx = malloc(sizeof(etm_context_t));
1356 int i;
1357
1358 if (argc != 5)
1359 {
1360 free(etm_ctx);
1361 return ERROR_COMMAND_SYNTAX_ERROR;
1362 }
1363
1364 target = get_target(args[0]);
1365 if (!target)
1366 {
1367 LOG_ERROR("target '%s' not defined", args[0]);
1368 free(etm_ctx);
1369 return ERROR_FAIL;
1370 }
1371
1372 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1373 {
1374 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1375 free(etm_ctx);
1376 return ERROR_FAIL;
1377 }
1378
1379 switch (strtoul(args[1], NULL, 0))
1380 {
1381 case 4:
1382 portmode |= ETM_PORT_4BIT;
1383 break;
1384 case 8:
1385 portmode |= ETM_PORT_8BIT;
1386 break;
1387 case 16:
1388 portmode |= ETM_PORT_16BIT;
1389 break;
1390 default:
1391 command_print(cmd_ctx, "unsupported ETM port width '%s', must be 4, 8 or 16", args[1]);
1392 free(etm_ctx);
1393 return ERROR_FAIL;
1394 }
1395
1396 if (strcmp("normal", args[2]) == 0)
1397 {
1398 portmode |= ETM_PORT_NORMAL;
1399 }
1400 else if (strcmp("multiplexed", args[2]) == 0)
1401 {
1402 portmode |= ETM_PORT_MUXED;
1403 }
1404 else if (strcmp("demultiplexed", args[2]) == 0)
1405 {
1406 portmode |= ETM_PORT_DEMUXED;
1407 }
1408 else
1409 {
1410 command_print(cmd_ctx, "unsupported ETM port mode '%s', must be 'normal', 'multiplexed' or 'demultiplexed'", args[2]);
1411 free(etm_ctx);
1412 return ERROR_FAIL;
1413 }
1414
1415 if (strcmp("half", args[3]) == 0)
1416 {
1417 portmode |= ETM_PORT_HALF_CLOCK;
1418 }
1419 else if (strcmp("full", args[3]) == 0)
1420 {
1421 portmode |= ETM_PORT_FULL_CLOCK;
1422 }
1423 else
1424 {
1425 command_print(cmd_ctx, "unsupported ETM port clocking '%s', must be 'full' or 'half'", args[3]);
1426 free(etm_ctx);
1427 return ERROR_FAIL;
1428 }
1429
1430 for (i = 0; etm_capture_drivers[i]; i++)
1431 {
1432 if (strcmp(args[4], etm_capture_drivers[i]->name) == 0)
1433 {
1434 int retval;
1435 if ((retval = etm_capture_drivers[i]->register_commands(cmd_ctx)) != ERROR_OK)
1436 {
1437 free(etm_ctx);
1438 return retval;
1439 }
1440
1441 etm_ctx->capture_driver = etm_capture_drivers[i];
1442
1443 break;
1444 }
1445 }
1446
1447 if (!etm_capture_drivers[i])
1448 {
1449 /* no supported capture driver found, don't register an ETM */
1450 free(etm_ctx);
1451 LOG_ERROR("trace capture driver '%s' not found", args[4]);
1452 return ERROR_FAIL;
1453 }
1454
1455 etm_ctx->target = target;
1456 etm_ctx->trigger_percent = 50;
1457 etm_ctx->trace_data = NULL;
1458 etm_ctx->trace_depth = 0;
1459 etm_ctx->portmode = portmode;
1460 etm_ctx->tracemode = 0x0;
1461 etm_ctx->core_state = ARMV4_5_STATE_ARM;
1462 etm_ctx->image = NULL;
1463 etm_ctx->pipe_index = 0;
1464 etm_ctx->data_index = 0;
1465 etm_ctx->current_pc = 0x0;
1466 etm_ctx->pc_ok = 0;
1467 etm_ctx->last_branch = 0x0;
1468 etm_ctx->last_branch_reason = 0x0;
1469 etm_ctx->last_ptr = 0x0;
1470 etm_ctx->ptr_ok = 0x0;
1471 etm_ctx->last_instruction = 0;
1472
1473 arm7_9->etm_ctx = etm_ctx;
1474
1475 return etm_register_user_commands(cmd_ctx);
1476 }
1477
1478 static int handle_etm_info_command(struct command_context_s *cmd_ctx,
1479 char *cmd, char **args, int argc)
1480 {
1481 target_t *target;
1482 armv4_5_common_t *armv4_5;
1483 arm7_9_common_t *arm7_9;
1484 etm_context_t *etm;
1485 reg_t *etm_sys_config_reg;
1486
1487 int max_port_size;
1488
1489 target = get_current_target(cmd_ctx);
1490
1491 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1492 {
1493 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1494 return ERROR_OK;
1495 }
1496
1497 etm = arm7_9->etm_ctx;
1498 if (!etm)
1499 {
1500 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1501 return ERROR_OK;
1502 }
1503
1504 command_print(cmd_ctx, "ETM v%d.%d",
1505 etm->bcd_vers >> 4, etm->bcd_vers & 0xf);
1506 command_print(cmd_ctx, "pairs of address comparators: %i",
1507 (int) (etm->config >> 0) & 0x0f);
1508 command_print(cmd_ctx, "data comparators: %i",
1509 (int) (etm->config >> 4) & 0x0f);
1510 command_print(cmd_ctx, "memory map decoders: %i",
1511 (int) (etm->config >> 8) & 0x1f);
1512 command_print(cmd_ctx, "number of counters: %i",
1513 (int) (etm->config >> 13) & 0x07);
1514 command_print(cmd_ctx, "sequencer %spresent",
1515 (int) (etm->config & (1 << 16)) ? "" : "not ");
1516 command_print(cmd_ctx, "number of ext. inputs: %i",
1517 (int) (etm->config >> 17) & 0x07);
1518 command_print(cmd_ctx, "number of ext. outputs: %i",
1519 (int) (etm->config >> 20) & 0x07);
1520 command_print(cmd_ctx, "FIFO full %spresent",
1521 (int) (etm->config & (1 << 23)) ? "" : "not ");
1522 if (etm->bcd_vers < 0x20)
1523 command_print(cmd_ctx, "protocol version: %i",
1524 (int) (etm->config >> 28) & 0x07);
1525 else {
1526 command_print(cmd_ctx, "trace start/stop %spresent",
1527 (etm->config & (1 << 26)) ? "" : "not ");
1528 command_print(cmd_ctx, "number of context comparators: %i",
1529 (int) (etm->config >> 24) & 0x03);
1530 }
1531
1532 /* SYS_CONFIG isn't present before ETMv1.2 */
1533 etm_sys_config_reg = etm_reg_lookup(etm, ETM_SYS_CONFIG);
1534 if (!etm_sys_config_reg)
1535 return ERROR_OK;
1536
1537 etm_get_reg(etm_sys_config_reg);
1538
1539 switch (buf_get_u32(etm_sys_config_reg->value, 0, 3))
1540 {
1541 case 0:
1542 max_port_size = 4;
1543 break;
1544 case 1:
1545 max_port_size = 8;
1546 break;
1547 case 2:
1548 max_port_size = 16;
1549 break;
1550 default:
1551 LOG_ERROR("Illegal max_port_size");
1552 exit(-1);
1553 }
1554 command_print(cmd_ctx, "max. port size: %i", max_port_size);
1555
1556 command_print(cmd_ctx, "half-rate clocking %ssupported",
1557 (buf_get_u32(etm_sys_config_reg->value, 3, 1) == 1) ? "" : "not ");
1558 command_print(cmd_ctx, "full-rate clocking %ssupported",
1559 (buf_get_u32(etm_sys_config_reg->value, 4, 1) == 1) ? "" : "not ");
1560 command_print(cmd_ctx, "normal trace format %ssupported",
1561 (buf_get_u32(etm_sys_config_reg->value, 5, 1) == 1) ? "" : "not ");
1562 command_print(cmd_ctx, "multiplex trace format %ssupported",
1563 (buf_get_u32(etm_sys_config_reg->value, 6, 1) == 1) ? "" : "not ");
1564 command_print(cmd_ctx, "demultiplex trace format %ssupported",
1565 (buf_get_u32(etm_sys_config_reg->value, 7, 1) == 1) ? "" : "not ");
1566 command_print(cmd_ctx, "FIFO full %ssupported",
1567 (buf_get_u32(etm_sys_config_reg->value, 8, 1) == 1) ? "" : "not ");
1568
1569 return ERROR_OK;
1570 }
1571
1572 static int handle_etm_status_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1573 {
1574 target_t *target;
1575 armv4_5_common_t *armv4_5;
1576 arm7_9_common_t *arm7_9;
1577 etm_context_t *etm;
1578 trace_status_t trace_status;
1579
1580 target = get_current_target(cmd_ctx);
1581
1582 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1583 {
1584 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1585 return ERROR_OK;
1586 }
1587
1588 if (!arm7_9->etm_ctx)
1589 {
1590 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1591 return ERROR_OK;
1592 }
1593 etm = arm7_9->etm_ctx;
1594
1595 /* ETM status */
1596 if (etm->bcd_vers >= 0x11) {
1597 reg_t *reg;
1598
1599 reg = etm_reg_lookup(etm, ETM_STATUS);
1600 if (!reg)
1601 return ERROR_OK;
1602 if (etm_get_reg(reg) == ERROR_OK) {
1603 unsigned s = buf_get_u32(reg->value, 0, reg->size);
1604
1605 command_print(cmd_ctx, "etm: %s%s%s%s",
1606 /* bit(1) == progbit */
1607 (etm->bcd_vers >= 0x12)
1608 ? ((s & (1 << 1))
1609 ? "disabled" : "enabled")
1610 : "?",
1611 ((s & (1 << 3)) && etm->bcd_vers >= 0x31)
1612 ? " triggered" : "",
1613 ((s & (1 << 2)) && etm->bcd_vers >= 0x12)
1614 ? " start/stop" : "",
1615 ((s & (1 << 0)) && etm->bcd_vers >= 0x11)
1616 ? " untraced-overflow" : "");
1617 } /* else ignore and try showing trace port status */
1618 }
1619
1620 /* Trace Port Driver status */
1621 trace_status = etm->capture_driver->status(etm);
1622 if (trace_status == TRACE_IDLE)
1623 {
1624 command_print(cmd_ctx, "%s: idle", etm->capture_driver->name);
1625 }
1626 else
1627 {
1628 static char *completed = " completed";
1629 static char *running = " is running";
1630 static char *overflowed = ", overflowed";
1631 static char *triggered = ", triggered";
1632
1633 command_print(cmd_ctx, "%s: trace collection%s%s%s",
1634 etm->capture_driver->name,
1635 (trace_status & TRACE_RUNNING) ? running : completed,
1636 (trace_status & TRACE_OVERFLOWED) ? overflowed : "",
1637 (trace_status & TRACE_TRIGGERED) ? triggered : "");
1638
1639 if (etm->trace_depth > 0)
1640 {
1641 command_print(cmd_ctx, "%i frames of trace data read",
1642 (int)(etm->trace_depth));
1643 }
1644 }
1645
1646 return ERROR_OK;
1647 }
1648
1649 static int handle_etm_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1650 {
1651 target_t *target;
1652 armv4_5_common_t *armv4_5;
1653 arm7_9_common_t *arm7_9;
1654 etm_context_t *etm_ctx;
1655
1656 if (argc < 1)
1657 {
1658 command_print(cmd_ctx, "usage: etm image <file> [base address] [type]");
1659 return ERROR_OK;
1660 }
1661
1662 target = get_current_target(cmd_ctx);
1663
1664 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1665 {
1666 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1667 return ERROR_OK;
1668 }
1669
1670 if (!(etm_ctx = arm7_9->etm_ctx))
1671 {
1672 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1673 return ERROR_OK;
1674 }
1675
1676 if (etm_ctx->image)
1677 {
1678 image_close(etm_ctx->image);
1679 free(etm_ctx->image);
1680 command_print(cmd_ctx, "previously loaded image found and closed");
1681 }
1682
1683 etm_ctx->image = malloc(sizeof(image_t));
1684 etm_ctx->image->base_address_set = 0;
1685 etm_ctx->image->start_address_set = 0;
1686
1687 /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
1688 if (argc >= 2)
1689 {
1690 etm_ctx->image->base_address_set = 1;
1691 etm_ctx->image->base_address = strtoul(args[1], NULL, 0);
1692 }
1693 else
1694 {
1695 etm_ctx->image->base_address_set = 0;
1696 }
1697
1698 if (image_open(etm_ctx->image, args[0], (argc >= 3) ? args[2] : NULL) != ERROR_OK)
1699 {
1700 free(etm_ctx->image);
1701 etm_ctx->image = NULL;
1702 return ERROR_OK;
1703 }
1704
1705 return ERROR_OK;
1706 }
1707
1708 static int handle_etm_dump_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1709 {
1710 fileio_t file;
1711 target_t *target;
1712 armv4_5_common_t *armv4_5;
1713 arm7_9_common_t *arm7_9;
1714 etm_context_t *etm_ctx;
1715 uint32_t i;
1716
1717 if (argc != 1)
1718 {
1719 command_print(cmd_ctx, "usage: etm dump <file>");
1720 return ERROR_OK;
1721 }
1722
1723 target = get_current_target(cmd_ctx);
1724
1725 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1726 {
1727 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1728 return ERROR_OK;
1729 }
1730
1731 if (!(etm_ctx = arm7_9->etm_ctx))
1732 {
1733 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1734 return ERROR_OK;
1735 }
1736
1737 if (etm_ctx->capture_driver->status == TRACE_IDLE)
1738 {
1739 command_print(cmd_ctx, "trace capture wasn't enabled, no trace data captured");
1740 return ERROR_OK;
1741 }
1742
1743 if (etm_ctx->capture_driver->status(etm_ctx) & TRACE_RUNNING)
1744 {
1745 /* TODO: if on-the-fly capture is to be supported, this needs to be changed */
1746 command_print(cmd_ctx, "trace capture not completed");
1747 return ERROR_OK;
1748 }
1749
1750 /* read the trace data if it wasn't read already */
1751 if (etm_ctx->trace_depth == 0)
1752 etm_ctx->capture_driver->read_trace(etm_ctx);
1753
1754 if (fileio_open(&file, args[0], FILEIO_WRITE, FILEIO_BINARY) != ERROR_OK)
1755 {
1756 return ERROR_OK;
1757 }
1758
1759 fileio_write_u32(&file, etm_ctx->capture_status);
1760 fileio_write_u32(&file, etm_ctx->portmode);
1761 fileio_write_u32(&file, etm_ctx->tracemode);
1762 fileio_write_u32(&file, etm_ctx->trace_depth);
1763
1764 for (i = 0; i < etm_ctx->trace_depth; i++)
1765 {
1766 fileio_write_u32(&file, etm_ctx->trace_data[i].pipestat);
1767 fileio_write_u32(&file, etm_ctx->trace_data[i].packet);
1768 fileio_write_u32(&file, etm_ctx->trace_data[i].flags);
1769 }
1770
1771 fileio_close(&file);
1772
1773 return ERROR_OK;
1774 }
1775
1776 static int handle_etm_load_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1777 {
1778 fileio_t file;
1779 target_t *target;
1780 armv4_5_common_t *armv4_5;
1781 arm7_9_common_t *arm7_9;
1782 etm_context_t *etm_ctx;
1783 uint32_t i;
1784
1785 if (argc != 1)
1786 {
1787 command_print(cmd_ctx, "usage: etm load <file>");
1788 return ERROR_OK;
1789 }
1790
1791 target = get_current_target(cmd_ctx);
1792
1793 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1794 {
1795 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1796 return ERROR_OK;
1797 }
1798
1799 if (!(etm_ctx = arm7_9->etm_ctx))
1800 {
1801 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1802 return ERROR_OK;
1803 }
1804
1805 if (etm_ctx->capture_driver->status(etm_ctx) & TRACE_RUNNING)
1806 {
1807 command_print(cmd_ctx, "trace capture running, stop first");
1808 return ERROR_OK;
1809 }
1810
1811 if (fileio_open(&file, args[0], FILEIO_READ, FILEIO_BINARY) != ERROR_OK)
1812 {
1813 return ERROR_OK;
1814 }
1815
1816 if (file.size % 4)
1817 {
1818 command_print(cmd_ctx, "size isn't a multiple of 4, no valid trace data");
1819 fileio_close(&file);
1820 return ERROR_OK;
1821 }
1822
1823 if (etm_ctx->trace_depth > 0)
1824 {
1825 free(etm_ctx->trace_data);
1826 etm_ctx->trace_data = NULL;
1827 }
1828
1829 {
1830 uint32_t tmp;
1831 fileio_read_u32(&file, &tmp); etm_ctx->capture_status = tmp;
1832 fileio_read_u32(&file, &tmp); etm_ctx->portmode = tmp;
1833 fileio_read_u32(&file, &tmp); etm_ctx->tracemode = tmp;
1834 fileio_read_u32(&file, &etm_ctx->trace_depth);
1835 }
1836 etm_ctx->trace_data = malloc(sizeof(etmv1_trace_data_t) * etm_ctx->trace_depth);
1837 if (etm_ctx->trace_data == NULL)
1838 {
1839 command_print(cmd_ctx, "not enough memory to perform operation");
1840 fileio_close(&file);
1841 return ERROR_OK;
1842 }
1843
1844 for (i = 0; i < etm_ctx->trace_depth; i++)
1845 {
1846 uint32_t pipestat, packet, flags;
1847 fileio_read_u32(&file, &pipestat);
1848 fileio_read_u32(&file, &packet);
1849 fileio_read_u32(&file, &flags);
1850 etm_ctx->trace_data[i].pipestat = pipestat & 0xff;
1851 etm_ctx->trace_data[i].packet = packet & 0xffff;
1852 etm_ctx->trace_data[i].flags = flags;
1853 }
1854
1855 fileio_close(&file);
1856
1857 return ERROR_OK;
1858 }
1859
1860 static int handle_etm_trigger_percent_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1861 {
1862 target_t *target;
1863 armv4_5_common_t *armv4_5;
1864 arm7_9_common_t *arm7_9;
1865 etm_context_t *etm_ctx;
1866
1867 target = get_current_target(cmd_ctx);
1868
1869 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1870 {
1871 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1872 return ERROR_OK;
1873 }
1874
1875 if (!(etm_ctx = arm7_9->etm_ctx))
1876 {
1877 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1878 return ERROR_OK;
1879 }
1880
1881 if (argc > 0)
1882 {
1883 uint32_t new_value = strtoul(args[0], NULL, 0);
1884
1885 if ((new_value < 2) || (new_value > 100))
1886 {
1887 command_print(cmd_ctx, "valid settings are 2%% to 100%%");
1888 }
1889 else
1890 {
1891 etm_ctx->trigger_percent = new_value;
1892 }
1893 }
1894
1895 command_print(cmd_ctx, "%i percent of the tracebuffer reserved for after the trigger", ((int)(etm_ctx->trigger_percent)));
1896
1897 return ERROR_OK;
1898 }
1899
1900 static int handle_etm_start_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1901 {
1902 target_t *target;
1903 armv4_5_common_t *armv4_5;
1904 arm7_9_common_t *arm7_9;
1905 etm_context_t *etm_ctx;
1906 reg_t *etm_ctrl_reg;
1907
1908 target = get_current_target(cmd_ctx);
1909
1910 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1911 {
1912 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1913 return ERROR_OK;
1914 }
1915
1916 if (!(etm_ctx = arm7_9->etm_ctx))
1917 {
1918 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1919 return ERROR_OK;
1920 }
1921
1922 /* invalidate old tracing data */
1923 arm7_9->etm_ctx->capture_status = TRACE_IDLE;
1924 if (arm7_9->etm_ctx->trace_depth > 0)
1925 {
1926 free(arm7_9->etm_ctx->trace_data);
1927 arm7_9->etm_ctx->trace_data = NULL;
1928 }
1929 arm7_9->etm_ctx->trace_depth = 0;
1930
1931 etm_ctrl_reg = etm_reg_lookup(etm_ctx, ETM_CTRL);
1932 if (!etm_ctrl_reg)
1933 return ERROR_OK;
1934
1935 etm_get_reg(etm_ctrl_reg);
1936
1937 /* Clear programming bit (10), set port selection bit (11) */
1938 buf_set_u32(etm_ctrl_reg->value, 10, 2, 0x2);
1939
1940 etm_store_reg(etm_ctrl_reg);
1941 jtag_execute_queue();
1942
1943 etm_ctx->capture_driver->start_capture(etm_ctx);
1944
1945 return ERROR_OK;
1946 }
1947
1948 static int handle_etm_stop_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1949 {
1950 target_t *target;
1951 armv4_5_common_t *armv4_5;
1952 arm7_9_common_t *arm7_9;
1953 etm_context_t *etm_ctx;
1954 reg_t *etm_ctrl_reg;
1955
1956 target = get_current_target(cmd_ctx);
1957
1958 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1959 {
1960 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1961 return ERROR_OK;
1962 }
1963
1964 if (!(etm_ctx = arm7_9->etm_ctx))
1965 {
1966 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1967 return ERROR_OK;
1968 }
1969
1970 etm_ctrl_reg = etm_reg_lookup(etm_ctx, ETM_CTRL);
1971 if (!etm_ctrl_reg)
1972 return ERROR_OK;
1973
1974 etm_get_reg(etm_ctrl_reg);
1975
1976 /* Set programming bit (10), clear port selection bit (11) */
1977 buf_set_u32(etm_ctrl_reg->value, 10, 2, 0x1);
1978
1979 etm_store_reg(etm_ctrl_reg);
1980 jtag_execute_queue();
1981
1982 etm_ctx->capture_driver->stop_capture(etm_ctx);
1983
1984 return ERROR_OK;
1985 }
1986
1987 static int handle_etm_analyze_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1988 {
1989 target_t *target;
1990 armv4_5_common_t *armv4_5;
1991 arm7_9_common_t *arm7_9;
1992 etm_context_t *etm_ctx;
1993 int retval;
1994
1995 target = get_current_target(cmd_ctx);
1996
1997 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1998 {
1999 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
2000 return ERROR_OK;
2001 }
2002
2003 if (!(etm_ctx = arm7_9->etm_ctx))
2004 {
2005 command_print(cmd_ctx, "current target doesn't have an ETM configured");
2006 return ERROR_OK;
2007 }
2008
2009 if ((retval = etmv1_analyze_trace(etm_ctx, cmd_ctx)) != ERROR_OK)
2010 {
2011 switch (retval)
2012 {
2013 case ERROR_ETM_ANALYSIS_FAILED:
2014 command_print(cmd_ctx, "further analysis failed (corrupted trace data or just end of data");
2015 break;
2016 case ERROR_TRACE_INSTRUCTION_UNAVAILABLE:
2017 command_print(cmd_ctx, "no instruction for current address available, analysis aborted");
2018 break;
2019 case ERROR_TRACE_IMAGE_UNAVAILABLE:
2020 command_print(cmd_ctx, "no image available for trace analysis");
2021 break;
2022 default:
2023 command_print(cmd_ctx, "unknown error: %i", retval);
2024 }
2025 }
2026
2027 return ERROR_OK;
2028 }
2029
2030 int etm_register_commands(struct command_context_s *cmd_ctx)
2031 {
2032 etm_cmd = register_command(cmd_ctx, NULL, "etm", NULL, COMMAND_ANY, "Embedded Trace Macrocell");
2033
2034 register_command(cmd_ctx, etm_cmd, "config", handle_etm_config_command,
2035 COMMAND_CONFIG, "etm config <target> <port_width> <port_mode> <clocking> <capture_driver>");
2036
2037 return ERROR_OK;
2038 }
2039
2040 static int etm_register_user_commands(struct command_context_s *cmd_ctx)
2041 {
2042 register_command(cmd_ctx, etm_cmd, "tracemode", handle_etm_tracemode_command,
2043 COMMAND_EXEC, "configure/display trace mode: "
2044 "<none | data | address | all> "
2045 "<context_id_bits> <cycle_accurate> <branch_output>");
2046
2047 register_command(cmd_ctx, etm_cmd, "info", handle_etm_info_command,
2048 COMMAND_EXEC, "display info about the current target's ETM");
2049
2050 register_command(cmd_ctx, etm_cmd, "trigger_percent", handle_etm_trigger_percent_command,
2051 COMMAND_EXEC, "amount (<percent>) of trace buffer to be filled after the trigger occured");
2052 register_command(cmd_ctx, etm_cmd, "status", handle_etm_status_command,
2053 COMMAND_EXEC, "display current target's ETM status");
2054 register_command(cmd_ctx, etm_cmd, "start", handle_etm_start_command,
2055 COMMAND_EXEC, "start ETM trace collection");
2056 register_command(cmd_ctx, etm_cmd, "stop", handle_etm_stop_command,
2057 COMMAND_EXEC, "stop ETM trace collection");
2058
2059 register_command(cmd_ctx, etm_cmd, "analyze", handle_etm_analyze_command,
2060 COMMAND_EXEC, "anaylze collected ETM trace");
2061
2062 register_command(cmd_ctx, etm_cmd, "image", handle_etm_image_command,
2063 COMMAND_EXEC, "load image from <file> [base address]");
2064
2065 register_command(cmd_ctx, etm_cmd, "dump", handle_etm_dump_command,
2066 COMMAND_EXEC, "dump captured trace data <file>");
2067 register_command(cmd_ctx, etm_cmd, "load", handle_etm_load_command,
2068 COMMAND_EXEC, "load trace data for analysis <file>");
2069
2070 return ERROR_OK;
2071 }
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