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printf format warning fixes
[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), 32, WO, 0x10, \
116 "ETM_ADDR_COMPARATOR_VALUE" #i, }, \
117 { ETM_ADDR_ACCESS_TYPE + (i), 7, WO, 0x10, \
118 "ETM_ADDR_ACCESS_TYPE" #i, }
119 ADDR_COMPARATOR(0),
120 ADDR_COMPARATOR(1),
121 ADDR_COMPARATOR(2),
122 ADDR_COMPARATOR(3),
123 ADDR_COMPARATOR(4),
124 ADDR_COMPARATOR(5),
125 ADDR_COMPARATOR(6),
126 ADDR_COMPARATOR(7),
127
128 ADDR_COMPARATOR(8),
129 ADDR_COMPARATOR(9),
130 ADDR_COMPARATOR(10),
131 ADDR_COMPARATOR(11),
132 ADDR_COMPARATOR(12),
133 ADDR_COMPARATOR(13),
134 ADDR_COMPARATOR(14),
135 ADDR_COMPARATOR(15),
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), 32, WO, 0x10, \
143 "ETM_DATA_COMPARATOR_VALUE" #i, }, \
144 { ETM_DATA_COMPARATOR_MASK + 2*(i), 32, WO, 0x10, \
145 "ETM_DATA_COMPARATOR_MASK" #i, }
146 DATA_COMPARATOR(0),
147 DATA_COMPARATOR(1),
148 DATA_COMPARATOR(2),
149 DATA_COMPARATOR(3),
150 DATA_COMPARATOR(4),
151 DATA_COMPARATOR(5),
152 DATA_COMPARATOR(6),
153 DATA_COMPARATOR(7),
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), 16, WO, 0x10, \
160 "ETM_COUNTER_RELOAD_VALUE" #i, }, \
161 { ETM_COUNTER_ENABLE + (i), 18, WO, 0x10, \
162 "ETM_COUNTER_ENABLE" #i, }, \
163 { ETM_COUNTER_RELOAD_EVENT + (i), 17, WO, 0x10, \
164 "ETM_COUNTER_RELOAD_EVENT" #i, }, \
165 { ETM_COUNTER_VALUE + (i), 16, RO, 0x10, \
166 "ETM_COUNTER_VALUE" #i, }
167 ETM_COUNTER(0),
168 ETM_COUNTER(1),
169 ETM_COUNTER(2),
170 ETM_COUNTER(3),
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), 17, WO, 0x10, \
192 "ETM_EXTERNAL_OUTPUT" #i, }
193
194 ETM_OUTPUT(0),
195 ETM_OUTPUT(1),
196 ETM_OUTPUT(2),
197 ETM_OUTPUT(3),
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_VALUE1", }
207 { 0x6e, 32, RO, 0x20, "ETM_CONTEXTID_COMPARATOR_VALUE1", }
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 if (strcmp(args[0], "none") == 0)
1184 {
1185 tracemode = ETMV1_TRACE_NONE;
1186 }
1187 else if (strcmp(args[0], "data") == 0)
1188 {
1189 tracemode = ETMV1_TRACE_DATA;
1190 }
1191 else if (strcmp(args[0], "address") == 0)
1192 {
1193 tracemode = ETMV1_TRACE_ADDR;
1194 }
1195 else if (strcmp(args[0], "all") == 0)
1196 {
1197 tracemode = ETMV1_TRACE_DATA | ETMV1_TRACE_ADDR;
1198 }
1199 else
1200 {
1201 command_print(cmd_ctx, "invalid option '%s'", args[0]);
1202 return ERROR_OK;
1203 }
1204
1205 switch (strtol(args[1], NULL, 0))
1206 {
1207 case 0:
1208 tracemode |= ETMV1_CONTEXTID_NONE;
1209 break;
1210 case 8:
1211 tracemode |= ETMV1_CONTEXTID_8;
1212 break;
1213 case 16:
1214 tracemode |= ETMV1_CONTEXTID_16;
1215 break;
1216 case 32:
1217 tracemode |= ETMV1_CONTEXTID_32;
1218 break;
1219 default:
1220 command_print(cmd_ctx, "invalid option '%s'", args[1]);
1221 return ERROR_OK;
1222 }
1223
1224 if (strcmp(args[2], "enable") == 0)
1225 {
1226 tracemode |= ETMV1_CYCLE_ACCURATE;
1227 }
1228 else if (strcmp(args[2], "disable") == 0)
1229 {
1230 tracemode |= 0;
1231 }
1232 else
1233 {
1234 command_print(cmd_ctx, "invalid option '%s'", args[2]);
1235 return ERROR_OK;
1236 }
1237
1238 if (strcmp(args[3], "enable") == 0)
1239 {
1240 tracemode |= ETMV1_BRANCH_OUTPUT;
1241 }
1242 else if (strcmp(args[3], "disable") == 0)
1243 {
1244 tracemode |= 0;
1245 }
1246 else
1247 {
1248 command_print(cmd_ctx, "invalid option '%s'", args[2]);
1249 return ERROR_OK;
1250 }
1251 }
1252 else if (argc != 0)
1253 {
1254 command_print(cmd_ctx, "usage: configure trace mode <none | data | address | all> <context id bits> <cycle accurate> <branch output>");
1255 return ERROR_OK;
1256 }
1257
1258 command_print(cmd_ctx, "current tracemode configuration:");
1259
1260 switch (tracemode & ETMV1_TRACE_MASK)
1261 {
1262 case ETMV1_TRACE_NONE:
1263 command_print(cmd_ctx, "data tracing: none");
1264 break;
1265 case ETMV1_TRACE_DATA:
1266 command_print(cmd_ctx, "data tracing: data only");
1267 break;
1268 case ETMV1_TRACE_ADDR:
1269 command_print(cmd_ctx, "data tracing: address only");
1270 break;
1271 case ETMV1_TRACE_DATA | ETMV1_TRACE_ADDR:
1272 command_print(cmd_ctx, "data tracing: address and data");
1273 break;
1274 }
1275
1276 switch (tracemode & ETMV1_CONTEXTID_MASK)
1277 {
1278 case ETMV1_CONTEXTID_NONE:
1279 command_print(cmd_ctx, "contextid tracing: none");
1280 break;
1281 case ETMV1_CONTEXTID_8:
1282 command_print(cmd_ctx, "contextid tracing: 8 bit");
1283 break;
1284 case ETMV1_CONTEXTID_16:
1285 command_print(cmd_ctx, "contextid tracing: 16 bit");
1286 break;
1287 case ETMV1_CONTEXTID_32:
1288 command_print(cmd_ctx, "contextid tracing: 32 bit");
1289 break;
1290 }
1291
1292 if (tracemode & ETMV1_CYCLE_ACCURATE)
1293 {
1294 command_print(cmd_ctx, "cycle-accurate tracing enabled");
1295 }
1296 else
1297 {
1298 command_print(cmd_ctx, "cycle-accurate tracing disabled");
1299 }
1300
1301 if (tracemode & ETMV1_BRANCH_OUTPUT)
1302 {
1303 command_print(cmd_ctx, "full branch address output enabled");
1304 }
1305 else
1306 {
1307 command_print(cmd_ctx, "full branch address output disabled");
1308 }
1309
1310 /* only update ETM_CTRL register if tracemode changed */
1311 if (arm7_9->etm_ctx->tracemode != tracemode)
1312 {
1313 reg_t *etm_ctrl_reg;
1314
1315 etm_ctrl_reg = etm_reg_lookup(arm7_9->etm_ctx, ETM_CTRL);
1316 if (!etm_ctrl_reg)
1317 return ERROR_OK;
1318
1319 etm_get_reg(etm_ctrl_reg);
1320
1321 buf_set_u32(etm_ctrl_reg->value, 2, 2, tracemode & ETMV1_TRACE_MASK);
1322 buf_set_u32(etm_ctrl_reg->value, 14, 2, (tracemode & ETMV1_CONTEXTID_MASK) >> 4);
1323 buf_set_u32(etm_ctrl_reg->value, 12, 1, (tracemode & ETMV1_CYCLE_ACCURATE) >> 8);
1324 buf_set_u32(etm_ctrl_reg->value, 8, 1, (tracemode & ETMV1_BRANCH_OUTPUT) >> 9);
1325 etm_store_reg(etm_ctrl_reg);
1326
1327 arm7_9->etm_ctx->tracemode = tracemode;
1328
1329 /* invalidate old trace data */
1330 arm7_9->etm_ctx->capture_status = TRACE_IDLE;
1331 if (arm7_9->etm_ctx->trace_depth > 0)
1332 {
1333 free(arm7_9->etm_ctx->trace_data);
1334 arm7_9->etm_ctx->trace_data = NULL;
1335 }
1336 arm7_9->etm_ctx->trace_depth = 0;
1337 }
1338
1339 return ERROR_OK;
1340 }
1341
1342 static int handle_etm_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1343 {
1344 target_t *target;
1345 armv4_5_common_t *armv4_5;
1346 arm7_9_common_t *arm7_9;
1347 etm_portmode_t portmode = 0x0;
1348 etm_context_t *etm_ctx = malloc(sizeof(etm_context_t));
1349 int i;
1350
1351 if (argc != 5)
1352 {
1353 free(etm_ctx);
1354 return ERROR_COMMAND_SYNTAX_ERROR;
1355 }
1356
1357 target = get_target(args[0]);
1358 if (!target)
1359 {
1360 LOG_ERROR("target '%s' not defined", args[0]);
1361 free(etm_ctx);
1362 return ERROR_FAIL;
1363 }
1364
1365 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1366 {
1367 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1368 free(etm_ctx);
1369 return ERROR_FAIL;
1370 }
1371
1372 switch (strtoul(args[1], NULL, 0))
1373 {
1374 case 4:
1375 portmode |= ETM_PORT_4BIT;
1376 break;
1377 case 8:
1378 portmode |= ETM_PORT_8BIT;
1379 break;
1380 case 16:
1381 portmode |= ETM_PORT_16BIT;
1382 break;
1383 default:
1384 command_print(cmd_ctx, "unsupported ETM port width '%s', must be 4, 8 or 16", args[1]);
1385 free(etm_ctx);
1386 return ERROR_FAIL;
1387 }
1388
1389 if (strcmp("normal", args[2]) == 0)
1390 {
1391 portmode |= ETM_PORT_NORMAL;
1392 }
1393 else if (strcmp("multiplexed", args[2]) == 0)
1394 {
1395 portmode |= ETM_PORT_MUXED;
1396 }
1397 else if (strcmp("demultiplexed", args[2]) == 0)
1398 {
1399 portmode |= ETM_PORT_DEMUXED;
1400 }
1401 else
1402 {
1403 command_print(cmd_ctx, "unsupported ETM port mode '%s', must be 'normal', 'multiplexed' or 'demultiplexed'", args[2]);
1404 free(etm_ctx);
1405 return ERROR_FAIL;
1406 }
1407
1408 if (strcmp("half", args[3]) == 0)
1409 {
1410 portmode |= ETM_PORT_HALF_CLOCK;
1411 }
1412 else if (strcmp("full", args[3]) == 0)
1413 {
1414 portmode |= ETM_PORT_FULL_CLOCK;
1415 }
1416 else
1417 {
1418 command_print(cmd_ctx, "unsupported ETM port clocking '%s', must be 'full' or 'half'", args[3]);
1419 free(etm_ctx);
1420 return ERROR_FAIL;
1421 }
1422
1423 for (i = 0; etm_capture_drivers[i]; i++)
1424 {
1425 if (strcmp(args[4], etm_capture_drivers[i]->name) == 0)
1426 {
1427 int retval;
1428 if ((retval = etm_capture_drivers[i]->register_commands(cmd_ctx)) != ERROR_OK)
1429 {
1430 free(etm_ctx);
1431 return retval;
1432 }
1433
1434 etm_ctx->capture_driver = etm_capture_drivers[i];
1435
1436 break;
1437 }
1438 }
1439
1440 if (!etm_capture_drivers[i])
1441 {
1442 /* no supported capture driver found, don't register an ETM */
1443 free(etm_ctx);
1444 LOG_ERROR("trace capture driver '%s' not found", args[4]);
1445 return ERROR_FAIL;
1446 }
1447
1448 etm_ctx->target = target;
1449 etm_ctx->trigger_percent = 50;
1450 etm_ctx->trace_data = NULL;
1451 etm_ctx->trace_depth = 0;
1452 etm_ctx->portmode = portmode;
1453 etm_ctx->tracemode = 0x0;
1454 etm_ctx->core_state = ARMV4_5_STATE_ARM;
1455 etm_ctx->image = NULL;
1456 etm_ctx->pipe_index = 0;
1457 etm_ctx->data_index = 0;
1458 etm_ctx->current_pc = 0x0;
1459 etm_ctx->pc_ok = 0;
1460 etm_ctx->last_branch = 0x0;
1461 etm_ctx->last_branch_reason = 0x0;
1462 etm_ctx->last_ptr = 0x0;
1463 etm_ctx->ptr_ok = 0x0;
1464 etm_ctx->last_instruction = 0;
1465
1466 arm7_9->etm_ctx = etm_ctx;
1467
1468 return etm_register_user_commands(cmd_ctx);
1469 }
1470
1471 static int handle_etm_info_command(struct command_context_s *cmd_ctx,
1472 char *cmd, char **args, int argc)
1473 {
1474 target_t *target;
1475 armv4_5_common_t *armv4_5;
1476 arm7_9_common_t *arm7_9;
1477 etm_context_t *etm;
1478 reg_t *etm_sys_config_reg;
1479
1480 int max_port_size;
1481
1482 target = get_current_target(cmd_ctx);
1483
1484 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1485 {
1486 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1487 return ERROR_OK;
1488 }
1489
1490 etm = arm7_9->etm_ctx;
1491 if (!etm)
1492 {
1493 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1494 return ERROR_OK;
1495 }
1496
1497 command_print(cmd_ctx, "ETM v%d.%d",
1498 etm->bcd_vers >> 4, etm->bcd_vers & 0xf);
1499 command_print(cmd_ctx, "pairs of address comparators: %i",
1500 (int) (etm->config >> 0) & 0x0f);
1501 command_print(cmd_ctx, "data comparators: %i",
1502 (int) (etm->config >> 4) & 0x0f);
1503 command_print(cmd_ctx, "memory map decoders: %i",
1504 (int) (etm->config >> 8) & 0x1f);
1505 command_print(cmd_ctx, "number of counters: %i",
1506 (int) (etm->config >> 13) & 0x07);
1507 command_print(cmd_ctx, "sequencer %spresent",
1508 (int) (etm->config & (1 << 16)) ? "" : "not ");
1509 command_print(cmd_ctx, "number of ext. inputs: %i",
1510 (int) (etm->config >> 17) & 0x07);
1511 command_print(cmd_ctx, "number of ext. outputs: %i",
1512 (int) (etm->config >> 20) & 0x07);
1513 command_print(cmd_ctx, "FIFO full %spresent",
1514 (int) (etm->config & (1 << 23)) ? "" : "not ");
1515 if (etm->bcd_vers < 0x20)
1516 command_print(cmd_ctx, "protocol version: %i",
1517 (int) (etm->config >> 28) & 0x07);
1518 else {
1519 command_print(cmd_ctx, "trace start/stop %spresent",
1520 (etm->config & (1 << 26)) ? "" : "not ");
1521 command_print(cmd_ctx, "number of context comparators: %i",
1522 (int) (etm->config >> 24) & 0x03);
1523 }
1524
1525 /* SYS_CONFIG isn't present before ETMv1.2 */
1526 etm_sys_config_reg = etm_reg_lookup(etm, ETM_SYS_CONFIG);
1527 if (!etm_sys_config_reg)
1528 return ERROR_OK;
1529
1530 etm_get_reg(etm_sys_config_reg);
1531
1532 switch (buf_get_u32(etm_sys_config_reg->value, 0, 3))
1533 {
1534 case 0:
1535 max_port_size = 4;
1536 break;
1537 case 1:
1538 max_port_size = 8;
1539 break;
1540 case 2:
1541 max_port_size = 16;
1542 break;
1543 default:
1544 LOG_ERROR("Illegal max_port_size");
1545 exit(-1);
1546 }
1547 command_print(cmd_ctx, "max. port size: %i", max_port_size);
1548
1549 command_print(cmd_ctx, "half-rate clocking %ssupported",
1550 (buf_get_u32(etm_sys_config_reg->value, 3, 1) == 1) ? "" : "not ");
1551 command_print(cmd_ctx, "full-rate clocking %ssupported",
1552 (buf_get_u32(etm_sys_config_reg->value, 4, 1) == 1) ? "" : "not ");
1553 command_print(cmd_ctx, "normal trace format %ssupported",
1554 (buf_get_u32(etm_sys_config_reg->value, 5, 1) == 1) ? "" : "not ");
1555 command_print(cmd_ctx, "multiplex trace format %ssupported",
1556 (buf_get_u32(etm_sys_config_reg->value, 6, 1) == 1) ? "" : "not ");
1557 command_print(cmd_ctx, "demultiplex trace format %ssupported",
1558 (buf_get_u32(etm_sys_config_reg->value, 7, 1) == 1) ? "" : "not ");
1559 command_print(cmd_ctx, "FIFO full %ssupported",
1560 (buf_get_u32(etm_sys_config_reg->value, 8, 1) == 1) ? "" : "not ");
1561
1562 return ERROR_OK;
1563 }
1564
1565 static int handle_etm_status_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1566 {
1567 target_t *target;
1568 armv4_5_common_t *armv4_5;
1569 arm7_9_common_t *arm7_9;
1570 etm_context_t *etm;
1571 trace_status_t trace_status;
1572
1573 target = get_current_target(cmd_ctx);
1574
1575 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1576 {
1577 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1578 return ERROR_OK;
1579 }
1580
1581 if (!arm7_9->etm_ctx)
1582 {
1583 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1584 return ERROR_OK;
1585 }
1586 etm = arm7_9->etm_ctx;
1587
1588 /* ETM status */
1589 if (etm->bcd_vers >= 0x11) {
1590 reg_t *reg;
1591
1592 reg = etm_reg_lookup(etm, ETM_STATUS);
1593 if (!reg)
1594 return ERROR_OK;
1595 if (etm_get_reg(reg) == ERROR_OK) {
1596 unsigned s = buf_get_u32(reg->value, 0, reg->size);
1597
1598 command_print(cmd_ctx, "etm: %s%s%s%s",
1599 /* bit(1) == progbit */
1600 (etm->bcd_vers >= 0x12)
1601 ? ((s & (1 << 1))
1602 ? "disabled" : "enabled")
1603 : "?",
1604 ((s & (1 << 3)) && etm->bcd_vers >= 0x31)
1605 ? " triggered" : "",
1606 ((s & (1 << 2)) && etm->bcd_vers >= 0x12)
1607 ? " start/stop" : "",
1608 ((s & (1 << 0)) && etm->bcd_vers >= 0x11)
1609 ? " untraced-overflow" : "");
1610 } /* else ignore and try showing trace port status */
1611 }
1612
1613 /* Trace Port Driver status */
1614 trace_status = etm->capture_driver->status(etm);
1615 if (trace_status == TRACE_IDLE)
1616 {
1617 command_print(cmd_ctx, "%s: idle", etm->capture_driver->name);
1618 }
1619 else
1620 {
1621 static char *completed = " completed";
1622 static char *running = " is running";
1623 static char *overflowed = ", overflowed";
1624 static char *triggered = ", triggered";
1625
1626 command_print(cmd_ctx, "%s: trace collection%s%s%s",
1627 etm->capture_driver->name,
1628 (trace_status & TRACE_RUNNING) ? running : completed,
1629 (trace_status & TRACE_OVERFLOWED) ? overflowed : "",
1630 (trace_status & TRACE_TRIGGERED) ? triggered : "");
1631
1632 if (etm->trace_depth > 0)
1633 {
1634 command_print(cmd_ctx, "%i frames of trace data read",
1635 (int)(etm->trace_depth));
1636 }
1637 }
1638
1639 return ERROR_OK;
1640 }
1641
1642 static int handle_etm_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1643 {
1644 target_t *target;
1645 armv4_5_common_t *armv4_5;
1646 arm7_9_common_t *arm7_9;
1647 etm_context_t *etm_ctx;
1648
1649 if (argc < 1)
1650 {
1651 command_print(cmd_ctx, "usage: etm image <file> [base address] [type]");
1652 return ERROR_OK;
1653 }
1654
1655 target = get_current_target(cmd_ctx);
1656
1657 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1658 {
1659 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1660 return ERROR_OK;
1661 }
1662
1663 if (!(etm_ctx = arm7_9->etm_ctx))
1664 {
1665 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1666 return ERROR_OK;
1667 }
1668
1669 if (etm_ctx->image)
1670 {
1671 image_close(etm_ctx->image);
1672 free(etm_ctx->image);
1673 command_print(cmd_ctx, "previously loaded image found and closed");
1674 }
1675
1676 etm_ctx->image = malloc(sizeof(image_t));
1677 etm_ctx->image->base_address_set = 0;
1678 etm_ctx->image->start_address_set = 0;
1679
1680 /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
1681 if (argc >= 2)
1682 {
1683 etm_ctx->image->base_address_set = 1;
1684 etm_ctx->image->base_address = strtoul(args[1], NULL, 0);
1685 }
1686 else
1687 {
1688 etm_ctx->image->base_address_set = 0;
1689 }
1690
1691 if (image_open(etm_ctx->image, args[0], (argc >= 3) ? args[2] : NULL) != ERROR_OK)
1692 {
1693 free(etm_ctx->image);
1694 etm_ctx->image = NULL;
1695 return ERROR_OK;
1696 }
1697
1698 return ERROR_OK;
1699 }
1700
1701 static int handle_etm_dump_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1702 {
1703 fileio_t file;
1704 target_t *target;
1705 armv4_5_common_t *armv4_5;
1706 arm7_9_common_t *arm7_9;
1707 etm_context_t *etm_ctx;
1708 uint32_t i;
1709
1710 if (argc != 1)
1711 {
1712 command_print(cmd_ctx, "usage: etm dump <file>");
1713 return ERROR_OK;
1714 }
1715
1716 target = get_current_target(cmd_ctx);
1717
1718 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1719 {
1720 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1721 return ERROR_OK;
1722 }
1723
1724 if (!(etm_ctx = arm7_9->etm_ctx))
1725 {
1726 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1727 return ERROR_OK;
1728 }
1729
1730 if (etm_ctx->capture_driver->status == TRACE_IDLE)
1731 {
1732 command_print(cmd_ctx, "trace capture wasn't enabled, no trace data captured");
1733 return ERROR_OK;
1734 }
1735
1736 if (etm_ctx->capture_driver->status(etm_ctx) & TRACE_RUNNING)
1737 {
1738 /* TODO: if on-the-fly capture is to be supported, this needs to be changed */
1739 command_print(cmd_ctx, "trace capture not completed");
1740 return ERROR_OK;
1741 }
1742
1743 /* read the trace data if it wasn't read already */
1744 if (etm_ctx->trace_depth == 0)
1745 etm_ctx->capture_driver->read_trace(etm_ctx);
1746
1747 if (fileio_open(&file, args[0], FILEIO_WRITE, FILEIO_BINARY) != ERROR_OK)
1748 {
1749 return ERROR_OK;
1750 }
1751
1752 fileio_write_u32(&file, etm_ctx->capture_status);
1753 fileio_write_u32(&file, etm_ctx->portmode);
1754 fileio_write_u32(&file, etm_ctx->tracemode);
1755 fileio_write_u32(&file, etm_ctx->trace_depth);
1756
1757 for (i = 0; i < etm_ctx->trace_depth; i++)
1758 {
1759 fileio_write_u32(&file, etm_ctx->trace_data[i].pipestat);
1760 fileio_write_u32(&file, etm_ctx->trace_data[i].packet);
1761 fileio_write_u32(&file, etm_ctx->trace_data[i].flags);
1762 }
1763
1764 fileio_close(&file);
1765
1766 return ERROR_OK;
1767 }
1768
1769 static int handle_etm_load_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1770 {
1771 fileio_t file;
1772 target_t *target;
1773 armv4_5_common_t *armv4_5;
1774 arm7_9_common_t *arm7_9;
1775 etm_context_t *etm_ctx;
1776 uint32_t i;
1777
1778 if (argc != 1)
1779 {
1780 command_print(cmd_ctx, "usage: etm load <file>");
1781 return ERROR_OK;
1782 }
1783
1784 target = get_current_target(cmd_ctx);
1785
1786 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1787 {
1788 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1789 return ERROR_OK;
1790 }
1791
1792 if (!(etm_ctx = arm7_9->etm_ctx))
1793 {
1794 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1795 return ERROR_OK;
1796 }
1797
1798 if (etm_ctx->capture_driver->status(etm_ctx) & TRACE_RUNNING)
1799 {
1800 command_print(cmd_ctx, "trace capture running, stop first");
1801 return ERROR_OK;
1802 }
1803
1804 if (fileio_open(&file, args[0], FILEIO_READ, FILEIO_BINARY) != ERROR_OK)
1805 {
1806 return ERROR_OK;
1807 }
1808
1809 if (file.size % 4)
1810 {
1811 command_print(cmd_ctx, "size isn't a multiple of 4, no valid trace data");
1812 fileio_close(&file);
1813 return ERROR_OK;
1814 }
1815
1816 if (etm_ctx->trace_depth > 0)
1817 {
1818 free(etm_ctx->trace_data);
1819 etm_ctx->trace_data = NULL;
1820 }
1821
1822 {
1823 uint32_t tmp;
1824 fileio_read_u32(&file, &tmp); etm_ctx->capture_status = tmp;
1825 fileio_read_u32(&file, &tmp); etm_ctx->portmode = tmp;
1826 fileio_read_u32(&file, &tmp); etm_ctx->tracemode = tmp;
1827 fileio_read_u32(&file, &etm_ctx->trace_depth);
1828 }
1829 etm_ctx->trace_data = malloc(sizeof(etmv1_trace_data_t) * etm_ctx->trace_depth);
1830 if (etm_ctx->trace_data == NULL)
1831 {
1832 command_print(cmd_ctx, "not enough memory to perform operation");
1833 fileio_close(&file);
1834 return ERROR_OK;
1835 }
1836
1837 for (i = 0; i < etm_ctx->trace_depth; i++)
1838 {
1839 uint32_t pipestat, packet, flags;
1840 fileio_read_u32(&file, &pipestat);
1841 fileio_read_u32(&file, &packet);
1842 fileio_read_u32(&file, &flags);
1843 etm_ctx->trace_data[i].pipestat = pipestat & 0xff;
1844 etm_ctx->trace_data[i].packet = packet & 0xffff;
1845 etm_ctx->trace_data[i].flags = flags;
1846 }
1847
1848 fileio_close(&file);
1849
1850 return ERROR_OK;
1851 }
1852
1853 static int handle_etm_trigger_percent_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1854 {
1855 target_t *target;
1856 armv4_5_common_t *armv4_5;
1857 arm7_9_common_t *arm7_9;
1858 etm_context_t *etm_ctx;
1859
1860 target = get_current_target(cmd_ctx);
1861
1862 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1863 {
1864 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1865 return ERROR_OK;
1866 }
1867
1868 if (!(etm_ctx = arm7_9->etm_ctx))
1869 {
1870 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1871 return ERROR_OK;
1872 }
1873
1874 if (argc > 0)
1875 {
1876 uint32_t new_value = strtoul(args[0], NULL, 0);
1877
1878 if ((new_value < 2) || (new_value > 100))
1879 {
1880 command_print(cmd_ctx, "valid settings are 2%% to 100%%");
1881 }
1882 else
1883 {
1884 etm_ctx->trigger_percent = new_value;
1885 }
1886 }
1887
1888 command_print(cmd_ctx, "%i percent of the tracebuffer reserved for after the trigger", ((int)(etm_ctx->trigger_percent)));
1889
1890 return ERROR_OK;
1891 }
1892
1893 static int handle_etm_start_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1894 {
1895 target_t *target;
1896 armv4_5_common_t *armv4_5;
1897 arm7_9_common_t *arm7_9;
1898 etm_context_t *etm_ctx;
1899 reg_t *etm_ctrl_reg;
1900
1901 target = get_current_target(cmd_ctx);
1902
1903 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1904 {
1905 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1906 return ERROR_OK;
1907 }
1908
1909 if (!(etm_ctx = arm7_9->etm_ctx))
1910 {
1911 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1912 return ERROR_OK;
1913 }
1914
1915 /* invalidate old tracing data */
1916 arm7_9->etm_ctx->capture_status = TRACE_IDLE;
1917 if (arm7_9->etm_ctx->trace_depth > 0)
1918 {
1919 free(arm7_9->etm_ctx->trace_data);
1920 arm7_9->etm_ctx->trace_data = NULL;
1921 }
1922 arm7_9->etm_ctx->trace_depth = 0;
1923
1924 etm_ctrl_reg = etm_reg_lookup(etm_ctx, ETM_CTRL);
1925 if (!etm_ctrl_reg)
1926 return ERROR_OK;
1927
1928 etm_get_reg(etm_ctrl_reg);
1929
1930 /* Clear programming bit (10), set port selection bit (11) */
1931 buf_set_u32(etm_ctrl_reg->value, 10, 2, 0x2);
1932
1933 etm_store_reg(etm_ctrl_reg);
1934 jtag_execute_queue();
1935
1936 etm_ctx->capture_driver->start_capture(etm_ctx);
1937
1938 return ERROR_OK;
1939 }
1940
1941 static int handle_etm_stop_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1942 {
1943 target_t *target;
1944 armv4_5_common_t *armv4_5;
1945 arm7_9_common_t *arm7_9;
1946 etm_context_t *etm_ctx;
1947 reg_t *etm_ctrl_reg;
1948
1949 target = get_current_target(cmd_ctx);
1950
1951 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1952 {
1953 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1954 return ERROR_OK;
1955 }
1956
1957 if (!(etm_ctx = arm7_9->etm_ctx))
1958 {
1959 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1960 return ERROR_OK;
1961 }
1962
1963 etm_ctrl_reg = etm_reg_lookup(etm_ctx, ETM_CTRL);
1964 if (!etm_ctrl_reg)
1965 return ERROR_OK;
1966
1967 etm_get_reg(etm_ctrl_reg);
1968
1969 /* Set programming bit (10), clear port selection bit (11) */
1970 buf_set_u32(etm_ctrl_reg->value, 10, 2, 0x1);
1971
1972 etm_store_reg(etm_ctrl_reg);
1973 jtag_execute_queue();
1974
1975 etm_ctx->capture_driver->stop_capture(etm_ctx);
1976
1977 return ERROR_OK;
1978 }
1979
1980 static int handle_etm_analyze_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1981 {
1982 target_t *target;
1983 armv4_5_common_t *armv4_5;
1984 arm7_9_common_t *arm7_9;
1985 etm_context_t *etm_ctx;
1986 int retval;
1987
1988 target = get_current_target(cmd_ctx);
1989
1990 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1991 {
1992 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1993 return ERROR_OK;
1994 }
1995
1996 if (!(etm_ctx = arm7_9->etm_ctx))
1997 {
1998 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1999 return ERROR_OK;
2000 }
2001
2002 if ((retval = etmv1_analyze_trace(etm_ctx, cmd_ctx)) != ERROR_OK)
2003 {
2004 switch (retval)
2005 {
2006 case ERROR_ETM_ANALYSIS_FAILED:
2007 command_print(cmd_ctx, "further analysis failed (corrupted trace data or just end of data");
2008 break;
2009 case ERROR_TRACE_INSTRUCTION_UNAVAILABLE:
2010 command_print(cmd_ctx, "no instruction for current address available, analysis aborted");
2011 break;
2012 case ERROR_TRACE_IMAGE_UNAVAILABLE:
2013 command_print(cmd_ctx, "no image available for trace analysis");
2014 break;
2015 default:
2016 command_print(cmd_ctx, "unknown error: %i", retval);
2017 }
2018 }
2019
2020 return ERROR_OK;
2021 }
2022
2023 int etm_register_commands(struct command_context_s *cmd_ctx)
2024 {
2025 etm_cmd = register_command(cmd_ctx, NULL, "etm", NULL, COMMAND_ANY, "Embedded Trace Macrocell");
2026
2027 register_command(cmd_ctx, etm_cmd, "config", handle_etm_config_command,
2028 COMMAND_CONFIG, "etm config <target> <port_width> <port_mode> <clocking> <capture_driver>");
2029
2030 return ERROR_OK;
2031 }
2032
2033 static int etm_register_user_commands(struct command_context_s *cmd_ctx)
2034 {
2035 register_command(cmd_ctx, etm_cmd, "tracemode", handle_etm_tracemode_command,
2036 COMMAND_EXEC, "configure/display trace mode: "
2037 "<none | data | address | all> "
2038 "<context_id_bits> <cycle_accurate> <branch_output>");
2039
2040 register_command(cmd_ctx, etm_cmd, "info", handle_etm_info_command,
2041 COMMAND_EXEC, "display info about the current target's ETM");
2042
2043 register_command(cmd_ctx, etm_cmd, "trigger_percent", handle_etm_trigger_percent_command,
2044 COMMAND_EXEC, "amount (<percent>) of trace buffer to be filled after the trigger occured");
2045 register_command(cmd_ctx, etm_cmd, "status", handle_etm_status_command,
2046 COMMAND_EXEC, "display current target's ETM status");
2047 register_command(cmd_ctx, etm_cmd, "start", handle_etm_start_command,
2048 COMMAND_EXEC, "start ETM trace collection");
2049 register_command(cmd_ctx, etm_cmd, "stop", handle_etm_stop_command,
2050 COMMAND_EXEC, "stop ETM trace collection");
2051
2052 register_command(cmd_ctx, etm_cmd, "analyze", handle_etm_analyze_command,
2053 COMMAND_EXEC, "anaylze collected ETM trace");
2054
2055 register_command(cmd_ctx, etm_cmd, "image", handle_etm_image_command,
2056 COMMAND_EXEC, "load image from <file> [base address]");
2057
2058 register_command(cmd_ctx, etm_cmd, "dump", handle_etm_dump_command,
2059 COMMAND_EXEC, "dump captured trace data <file>");
2060 register_command(cmd_ctx, etm_cmd, "load", handle_etm_load_command,
2061 COMMAND_EXEC, "load trace data for analysis <file>");
2062
2063 return ERROR_OK;
2064 }
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