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[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 <string.h>
25
26 #include "etm.h"
27 #include "etb.h"
28
29 #include "armv4_5.h"
30 #include "arm7_9_common.h"
31 #include "arm_disassembler.h"
32 #include "arm_simulator.h"
33
34 #include "log.h"
35 #include "arm_jtag.h"
36 #include "types.h"
37 #include "binarybuffer.h"
38 #include "target.h"
39 #include "register.h"
40 #include "jtag.h"
41 #include "fileio.h"
42
43 #include <stdlib.h>
44
45 /* ETM register access functionality
46 *
47 */
48
49 bitfield_desc_t etm_comms_ctrl_bitfield_desc[] =
50 {
51 {"R", 1},
52 {"W", 1},
53 {"reserved", 26},
54 {"version", 4}
55 };
56
57 int etm_reg_arch_info[] =
58 {
59 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
60 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
61 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
62 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
63 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
64 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
65 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
66 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
67 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
68 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
69 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
70 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
71 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x67,
72 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
73 };
74
75 int etm_reg_arch_size_info[] =
76 {
77 32, 32, 17, 8, 3, 9, 32, 16,
78 17, 26, 25, 8, 17, 32, 32, 17,
79 32, 32, 32, 32, 32, 32, 32, 32,
80 32, 32, 32, 32, 32, 32, 32, 32,
81 7, 7, 7, 7, 7, 7, 7, 7,
82 7, 7, 7, 7, 7, 7, 7, 7,
83 32, 32, 32, 32, 32, 32, 32, 32,
84 32, 32, 32, 32, 32, 32, 32, 32,
85 32, 32, 32, 32, 32, 32, 32, 32,
86 32, 32, 32, 32, 32, 32, 32, 32,
87 16, 16, 16, 16, 18, 18, 18, 18,
88 17, 17, 17, 17, 16, 16, 16, 16,
89 17, 17, 17, 17, 17, 17, 2,
90 17, 17, 17, 17, 32, 32, 32, 32
91 };
92
93 char* etm_reg_list[] =
94 {
95 "ETM_CTRL",
96 "ETM_CONFIG",
97 "ETM_TRIG_EVENT",
98 "ETM_MMD_CTRL",
99 "ETM_STATUS",
100 "ETM_SYS_CONFIG",
101 "ETM_TRACE_RESOURCE_CTRL",
102 "ETM_TRACE_EN_CTRL2",
103 "ETM_TRACE_EN_EVENT",
104 "ETM_TRACE_EN_CTRL1",
105 "ETM_FIFOFULL_REGION",
106 "ETM_FIFOFULL_LEVEL",
107 "ETM_VIEWDATA_EVENT",
108 "ETM_VIEWDATA_CTRL1",
109 "ETM_VIEWDATA_CTRL2",
110 "ETM_VIEWDATA_CTRL3",
111 "ETM_ADDR_COMPARATOR_VALUE1",
112 "ETM_ADDR_COMPARATOR_VALUE2",
113 "ETM_ADDR_COMPARATOR_VALUE3",
114 "ETM_ADDR_COMPARATOR_VALUE4",
115 "ETM_ADDR_COMPARATOR_VALUE5",
116 "ETM_ADDR_COMPARATOR_VALUE6",
117 "ETM_ADDR_COMPARATOR_VALUE7",
118 "ETM_ADDR_COMPARATOR_VALUE8",
119 "ETM_ADDR_COMPARATOR_VALUE9",
120 "ETM_ADDR_COMPARATOR_VALUE10",
121 "ETM_ADDR_COMPARATOR_VALUE11",
122 "ETM_ADDR_COMPARATOR_VALUE12",
123 "ETM_ADDR_COMPARATOR_VALUE13",
124 "ETM_ADDR_COMPARATOR_VALUE14",
125 "ETM_ADDR_COMPARATOR_VALUE15",
126 "ETM_ADDR_COMPARATOR_VALUE16",
127 "ETM_ADDR_ACCESS_TYPE1",
128 "ETM_ADDR_ACCESS_TYPE2",
129 "ETM_ADDR_ACCESS_TYPE3",
130 "ETM_ADDR_ACCESS_TYPE4",
131 "ETM_ADDR_ACCESS_TYPE5",
132 "ETM_ADDR_ACCESS_TYPE6",
133 "ETM_ADDR_ACCESS_TYPE7",
134 "ETM_ADDR_ACCESS_TYPE8",
135 "ETM_ADDR_ACCESS_TYPE9",
136 "ETM_ADDR_ACCESS_TYPE10",
137 "ETM_ADDR_ACCESS_TYPE11",
138 "ETM_ADDR_ACCESS_TYPE12",
139 "ETM_ADDR_ACCESS_TYPE13",
140 "ETM_ADDR_ACCESS_TYPE14",
141 "ETM_ADDR_ACCESS_TYPE15",
142 "ETM_ADDR_ACCESS_TYPE16",
143 "ETM_DATA_COMPARATOR_VALUE1",
144 "ETM_DATA_COMPARATOR_VALUE2",
145 "ETM_DATA_COMPARATOR_VALUE3",
146 "ETM_DATA_COMPARATOR_VALUE4",
147 "ETM_DATA_COMPARATOR_VALUE5",
148 "ETM_DATA_COMPARATOR_VALUE6",
149 "ETM_DATA_COMPARATOR_VALUE7",
150 "ETM_DATA_COMPARATOR_VALUE8",
151 "ETM_DATA_COMPARATOR_VALUE9",
152 "ETM_DATA_COMPARATOR_VALUE10",
153 "ETM_DATA_COMPARATOR_VALUE11",
154 "ETM_DATA_COMPARATOR_VALUE12",
155 "ETM_DATA_COMPARATOR_VALUE13",
156 "ETM_DATA_COMPARATOR_VALUE14",
157 "ETM_DATA_COMPARATOR_VALUE15",
158 "ETM_DATA_COMPARATOR_VALUE16",
159 "ETM_DATA_COMPARATOR_MASK1",
160 "ETM_DATA_COMPARATOR_MASK2",
161 "ETM_DATA_COMPARATOR_MASK3",
162 "ETM_DATA_COMPARATOR_MASK4",
163 "ETM_DATA_COMPARATOR_MASK5",
164 "ETM_DATA_COMPARATOR_MASK6",
165 "ETM_DATA_COMPARATOR_MASK7",
166 "ETM_DATA_COMPARATOR_MASK8",
167 "ETM_DATA_COMPARATOR_MASK9",
168 "ETM_DATA_COMPARATOR_MASK10",
169 "ETM_DATA_COMPARATOR_MASK11",
170 "ETM_DATA_COMPARATOR_MASK12",
171 "ETM_DATA_COMPARATOR_MASK13",
172 "ETM_DATA_COMPARATOR_MASK14",
173 "ETM_DATA_COMPARATOR_MASK15",
174 "ETM_DATA_COMPARATOR_MASK16",
175 "ETM_COUNTER_INITAL_VALUE1",
176 "ETM_COUNTER_INITAL_VALUE2",
177 "ETM_COUNTER_INITAL_VALUE3",
178 "ETM_COUNTER_INITAL_VALUE4",
179 "ETM_COUNTER_ENABLE1",
180 "ETM_COUNTER_ENABLE2",
181 "ETM_COUNTER_ENABLE3",
182 "ETM_COUNTER_ENABLE4",
183 "ETM_COUNTER_RELOAD_VALUE1",
184 "ETM_COUNTER_RELOAD_VALUE2",
185 "ETM_COUNTER_RELOAD_VALUE3",
186 "ETM_COUNTER_RELOAD_VALUE4",
187 "ETM_COUNTER_VALUE1",
188 "ETM_COUNTER_VALUE2",
189 "ETM_COUNTER_VALUE3",
190 "ETM_COUNTER_VALUE4",
191 "ETM_SEQUENCER_CTRL1",
192 "ETM_SEQUENCER_CTRL2",
193 "ETM_SEQUENCER_CTRL3",
194 "ETM_SEQUENCER_CTRL4",
195 "ETM_SEQUENCER_CTRL5",
196 "ETM_SEQUENCER_CTRL6",
197 "ETM_SEQUENCER_STATE",
198 "ETM_EXTERNAL_OUTPUT1",
199 "ETM_EXTERNAL_OUTPUT2",
200 "ETM_EXTERNAL_OUTPUT3",
201 "ETM_EXTERNAL_OUTPUT4",
202 "ETM_CONTEXTID_COMPARATOR_VALUE1",
203 "ETM_CONTEXTID_COMPARATOR_VALUE2",
204 "ETM_CONTEXTID_COMPARATOR_VALUE3",
205 "ETM_CONTEXTID_COMPARATOR_MASK"
206 };
207
208 int etm_reg_arch_type = -1;
209
210 int etm_get_reg(reg_t *reg);
211 int etm_set_reg(reg_t *reg, u32 value);
212 int etm_set_reg_w_exec(reg_t *reg, u8 *buf);
213
214 int etm_write_reg(reg_t *reg, u32 value);
215 int etm_read_reg(reg_t *reg);
216
217 command_t *etm_cmd = NULL;
218
219 reg_cache_t* etm_build_reg_cache(target_t *target, arm_jtag_t *jtag_info, etm_context_t *etm_ctx)
220 {
221 reg_cache_t *reg_cache = malloc(sizeof(reg_cache_t));
222 reg_t *reg_list = NULL;
223 etm_reg_t *arch_info = NULL;
224 int num_regs = sizeof(etm_reg_arch_info)/sizeof(int);
225 int i;
226 u32 etm_ctrl_value;
227
228 /* register a register arch-type for etm registers only once */
229 if (etm_reg_arch_type == -1)
230 etm_reg_arch_type = register_reg_arch_type(etm_get_reg, etm_set_reg_w_exec);
231
232 /* the actual registers are kept in two arrays */
233 reg_list = calloc(num_regs, sizeof(reg_t));
234 arch_info = calloc(num_regs, sizeof(etm_reg_t));
235
236 /* fill in values for the reg cache */
237 reg_cache->name = "etm registers";
238 reg_cache->next = NULL;
239 reg_cache->reg_list = reg_list;
240 reg_cache->num_regs = num_regs;
241
242 /* set up registers */
243 for (i = 0; i < num_regs; i++)
244 {
245 reg_list[i].name = etm_reg_list[i];
246 reg_list[i].size = 32;
247 reg_list[i].dirty = 0;
248 reg_list[i].valid = 0;
249 reg_list[i].bitfield_desc = NULL;
250 reg_list[i].num_bitfields = 0;
251 reg_list[i].value = calloc(1, 4);
252 reg_list[i].arch_info = &arch_info[i];
253 reg_list[i].arch_type = etm_reg_arch_type;
254 reg_list[i].size = etm_reg_arch_size_info[i];
255 arch_info[i].addr = etm_reg_arch_info[i];
256 arch_info[i].jtag_info = jtag_info;
257 }
258
259 /* initialize some ETM control register settings */
260 etm_get_reg(&reg_list[ETM_CTRL]);
261 etm_ctrl_value = buf_get_u32(reg_list[ETM_CTRL].value, 0, reg_list[ETM_CTRL].size);
262
263 /* clear the ETM powerdown bit (0) */
264 etm_ctrl_value &= ~0x1;
265
266 /* configure port width (6:4), mode (17:16) and clocking (13) */
267 etm_ctrl_value = (etm_ctrl_value &
268 ~ETM_PORT_WIDTH_MASK & ~ETM_PORT_MODE_MASK & ~ETM_PORT_CLOCK_MASK)
269 | etm_ctx->portmode;
270
271 buf_set_u32(reg_list[ETM_CTRL].value, 0, reg_list[ETM_CTRL].size, etm_ctrl_value);
272 etm_store_reg(&reg_list[ETM_CTRL]);
273
274 /* the ETM might have an ETB connected */
275 if (strcmp(etm_ctx->capture_driver->name, "etb") == 0)
276 {
277 etb_t *etb = etm_ctx->capture_driver_priv;
278
279 if (!etb)
280 {
281 ERROR("etb selected as etm capture driver, but no ETB configured");
282 return ERROR_OK;
283 }
284
285 reg_cache->next = etb_build_reg_cache(etb);
286
287 etb->reg_cache = reg_cache->next;
288 }
289
290 if (etm_ctx->capture_driver->init(etm_ctx) != ERROR_OK)
291 {
292 ERROR("ETM capture driver initialization failed");
293 exit(-1);
294 }
295
296 return reg_cache;
297 }
298
299 int etm_get_reg(reg_t *reg)
300 {
301 if (etm_read_reg(reg) != ERROR_OK)
302 {
303 ERROR("BUG: error scheduling etm register read");
304 exit(-1);
305 }
306
307 if (jtag_execute_queue() != ERROR_OK)
308 {
309 ERROR("register read failed");
310 }
311
312 return ERROR_OK;
313 }
314
315 int etm_read_reg_w_check(reg_t *reg, u8* check_value, u8* check_mask)
316 {
317 etm_reg_t *etm_reg = reg->arch_info;
318 u8 reg_addr = etm_reg->addr & 0x7f;
319 scan_field_t fields[3];
320
321 DEBUG("%i", etm_reg->addr);
322
323 jtag_add_end_state(TAP_RTI);
324 arm_jtag_scann(etm_reg->jtag_info, 0x6);
325 arm_jtag_set_instr(etm_reg->jtag_info, etm_reg->jtag_info->intest_instr, NULL);
326
327 fields[0].device = etm_reg->jtag_info->chain_pos;
328 fields[0].num_bits = 32;
329 fields[0].out_value = reg->value;
330 fields[0].out_mask = NULL;
331 fields[0].in_value = NULL;
332 fields[0].in_check_value = NULL;
333 fields[0].in_check_mask = NULL;
334 fields[0].in_handler = NULL;
335 fields[0].in_handler_priv = NULL;
336
337 fields[1].device = etm_reg->jtag_info->chain_pos;
338 fields[1].num_bits = 7;
339 fields[1].out_value = malloc(1);
340 buf_set_u32(fields[1].out_value, 0, 7, reg_addr);
341 fields[1].out_mask = NULL;
342 fields[1].in_value = NULL;
343 fields[1].in_check_value = NULL;
344 fields[1].in_check_mask = NULL;
345 fields[1].in_handler = NULL;
346 fields[1].in_handler_priv = NULL;
347
348 fields[2].device = etm_reg->jtag_info->chain_pos;
349 fields[2].num_bits = 1;
350 fields[2].out_value = malloc(1);
351 buf_set_u32(fields[2].out_value, 0, 1, 0);
352 fields[2].out_mask = NULL;
353 fields[2].in_value = NULL;
354 fields[2].in_check_value = NULL;
355 fields[2].in_check_mask = NULL;
356 fields[2].in_handler = NULL;
357 fields[2].in_handler_priv = NULL;
358
359 jtag_add_dr_scan(3, fields, -1, NULL);
360
361 fields[0].in_value = reg->value;
362 fields[0].in_check_value = check_value;
363 fields[0].in_check_mask = check_mask;
364
365 jtag_add_dr_scan(3, fields, -1, NULL);
366
367 free(fields[1].out_value);
368 free(fields[2].out_value);
369
370 return ERROR_OK;
371 }
372
373 int etm_read_reg(reg_t *reg)
374 {
375 return etm_read_reg_w_check(reg, NULL, NULL);
376 }
377
378 int etm_set_reg(reg_t *reg, u32 value)
379 {
380 if (etm_write_reg(reg, value) != ERROR_OK)
381 {
382 ERROR("BUG: error scheduling etm register write");
383 exit(-1);
384 }
385
386 buf_set_u32(reg->value, 0, reg->size, value);
387 reg->valid = 1;
388 reg->dirty = 0;
389
390 return ERROR_OK;
391 }
392
393 int etm_set_reg_w_exec(reg_t *reg, u8 *buf)
394 {
395 etm_set_reg(reg, buf_get_u32(buf, 0, reg->size));
396
397 if (jtag_execute_queue() != ERROR_OK)
398 {
399 ERROR("register write failed");
400 exit(-1);
401 }
402 return ERROR_OK;
403 }
404
405 int etm_write_reg(reg_t *reg, u32 value)
406 {
407 etm_reg_t *etm_reg = reg->arch_info;
408 u8 reg_addr = etm_reg->addr & 0x7f;
409 scan_field_t fields[3];
410
411 DEBUG("%i: 0x%8.8x", etm_reg->addr, value);
412
413 jtag_add_end_state(TAP_RTI);
414 arm_jtag_scann(etm_reg->jtag_info, 0x6);
415 arm_jtag_set_instr(etm_reg->jtag_info, etm_reg->jtag_info->intest_instr, NULL);
416
417 fields[0].device = etm_reg->jtag_info->chain_pos;
418 fields[0].num_bits = 32;
419 fields[0].out_value = malloc(4);
420 buf_set_u32(fields[0].out_value, 0, 32, value);
421 fields[0].out_mask = NULL;
422 fields[0].in_value = NULL;
423 fields[0].in_check_value = NULL;
424 fields[0].in_check_mask = NULL;
425 fields[0].in_handler = NULL;
426 fields[0].in_handler_priv = NULL;
427
428 fields[1].device = etm_reg->jtag_info->chain_pos;
429 fields[1].num_bits = 7;
430 fields[1].out_value = malloc(1);
431 buf_set_u32(fields[1].out_value, 0, 7, reg_addr);
432 fields[1].out_mask = NULL;
433 fields[1].in_value = NULL;
434 fields[1].in_check_value = NULL;
435 fields[1].in_check_mask = NULL;
436 fields[1].in_handler = NULL;
437 fields[1].in_handler_priv = NULL;
438
439 fields[2].device = etm_reg->jtag_info->chain_pos;
440 fields[2].num_bits = 1;
441 fields[2].out_value = malloc(1);
442 buf_set_u32(fields[2].out_value, 0, 1, 1);
443 fields[2].out_mask = NULL;
444 fields[2].in_value = NULL;
445 fields[2].in_check_value = NULL;
446 fields[2].in_check_mask = NULL;
447 fields[2].in_handler = NULL;
448 fields[2].in_handler_priv = NULL;
449
450 jtag_add_dr_scan(3, fields, -1, NULL);
451
452 free(fields[0].out_value);
453 free(fields[1].out_value);
454 free(fields[2].out_value);
455
456 return ERROR_OK;
457 }
458
459 int etm_store_reg(reg_t *reg)
460 {
461 return etm_write_reg(reg, buf_get_u32(reg->value, 0, reg->size));
462 }
463
464 /* ETM trace analysis functionality
465 *
466 */
467 extern etm_capture_driver_t etb_capture_driver;
468 extern etm_capture_driver_t etm_dummy_capture_driver;
469 #if BUILD_OOCD_TRACE == 1
470 extern etm_capture_driver_t oocd_trace_capture_driver;
471 #endif
472
473 etm_capture_driver_t *etm_capture_drivers[] =
474 {
475 &etb_capture_driver,
476 &etm_dummy_capture_driver,
477 #if BUILD_OOCD_TRACE == 1
478 &oocd_trace_capture_driver,
479 #endif
480 NULL
481 };
482
483 char *etmv1v1_branch_reason_strings[] =
484 {
485 "normal PC change",
486 "tracing enabled",
487 "trace restarted after overflow",
488 "exit from debug",
489 "periodic synchronization",
490 "reserved",
491 "reserved",
492 "reserved",
493 };
494
495 int etm_read_instruction(etm_context_t *ctx, arm_instruction_t *instruction)
496 {
497 int i;
498 int section = -1;
499 u32 size_read;
500 u32 opcode;
501 int retval;
502
503 if (!ctx->image)
504 return ERROR_TRACE_IMAGE_UNAVAILABLE;
505
506 /* search for the section the current instruction belongs to */
507 for (i = 0; i < ctx->image->num_sections; i++)
508 {
509 if ((ctx->image->sections[i].base_address <= ctx->current_pc) &&
510 (ctx->image->sections[i].base_address + ctx->image->sections[i].size > ctx->current_pc))
511 {
512 section = i;
513 break;
514 }
515 }
516
517 if (section == -1)
518 {
519 /* current instruction couldn't be found in the image */
520 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
521 }
522
523 if (ctx->core_state == ARMV4_5_STATE_ARM)
524 {
525 u8 buf[4];
526 if ((retval = image_read_section(ctx->image, section,
527 ctx->current_pc - ctx->image->sections[section].base_address,
528 4, buf, &size_read)) != ERROR_OK)
529 {
530 ERROR("error while reading instruction: %i", retval);
531 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
532 }
533 opcode = target_buffer_get_u32(ctx->target, buf);
534 arm_evaluate_opcode(opcode, ctx->current_pc, instruction);
535 }
536 else if (ctx->core_state == ARMV4_5_STATE_THUMB)
537 {
538 u8 buf[2];
539 if ((retval = image_read_section(ctx->image, section,
540 ctx->current_pc - ctx->image->sections[section].base_address,
541 2, buf, &size_read)) != ERROR_OK)
542 {
543 ERROR("error while reading instruction: %i", retval);
544 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
545 }
546 opcode = target_buffer_get_u16(ctx->target, buf);
547 thumb_evaluate_opcode(opcode, ctx->current_pc, instruction);
548 }
549 else if (ctx->core_state == ARMV4_5_STATE_JAZELLE)
550 {
551 ERROR("BUG: tracing of jazelle code not supported");
552 exit(-1);
553 }
554 else
555 {
556 ERROR("BUG: unknown core state encountered");
557 exit(-1);
558 }
559
560 return ERROR_OK;
561 }
562
563 int etmv1_next_packet(etm_context_t *ctx, u8 *packet, int apo)
564 {
565 while (ctx->data_index < ctx->trace_depth)
566 {
567 /* if the caller specified an address packet offset, skip until the
568 * we reach the n-th cycle marked with tracesync */
569 if (apo > 0)
570 {
571 if (ctx->trace_data[ctx->data_index].flags & ETMV1_TRACESYNC_CYCLE)
572 apo--;
573
574 if (apo > 0)
575 {
576 ctx->data_index++;
577 ctx->data_half = 0;
578 }
579 continue;
580 }
581
582 /* no tracedata output during a TD cycle
583 * or in a trigger cycle */
584 if ((ctx->trace_data[ctx->data_index].pipestat == STAT_TD)
585 || (ctx->trace_data[ctx->data_index].flags & ETMV1_TRIGGER_CYCLE))
586 {
587 ctx->data_index++;
588 ctx->data_half = 0;
589 continue;
590 }
591
592 if ((ctx->portmode & ETM_PORT_WIDTH_MASK) == ETM_PORT_16BIT)
593 {
594 if (ctx->data_half == 0)
595 {
596 *packet = ctx->trace_data[ctx->data_index].packet & 0xff;
597 ctx->data_half = 1;
598 }
599 else
600 {
601 *packet = (ctx->trace_data[ctx->data_index].packet & 0xff00) >> 8;
602 ctx->data_half = 0;
603 ctx->data_index++;
604 }
605 }
606 else if ((ctx->portmode & ETM_PORT_WIDTH_MASK) == ETM_PORT_8BIT)
607 {
608 *packet = ctx->trace_data[ctx->data_index].packet & 0xff;
609 ctx->data_index++;
610 }
611 else
612 {
613 /* on a 4-bit port, a packet will be output during two consecutive cycles */
614 if (ctx->data_index > (ctx->trace_depth - 2))
615 return -1;
616
617 *packet = ctx->trace_data[ctx->data_index].packet & 0xf;
618 *packet |= (ctx->trace_data[ctx->data_index + 1].packet & 0xf) << 4;
619 ctx->data_index += 2;
620 }
621
622 return 0;
623 }
624
625 return -1;
626 }
627
628 int etmv1_branch_address(etm_context_t *ctx)
629 {
630 int retval;
631 u8 packet;
632 int shift = 0;
633 int apo;
634 int i;
635
636 /* quit analysis if less than two cycles are left in the trace
637 * because we can't extract the APO */
638 if (ctx->data_index > (ctx->trace_depth - 2))
639 return -1;
640
641 /* a BE could be output during an APO cycle, skip the current
642 * and continue with the new one */
643 if (ctx->trace_data[ctx->pipe_index + 1].pipestat & 0x4)
644 return 1;
645 if (ctx->trace_data[ctx->pipe_index + 2].pipestat & 0x4)
646 return 2;
647
648 /* address packet offset encoded in the next two cycles' pipestat bits */
649 apo = ctx->trace_data[ctx->pipe_index + 1].pipestat & 0x3;
650 apo |= (ctx->trace_data[ctx->pipe_index + 2].pipestat & 0x3) << 2;
651
652 /* count number of tracesync cycles between current pipe_index and data_index
653 * i.e. the number of tracesyncs that data_index already passed by
654 * to subtract them from the APO */
655 for (i = ctx->pipe_index; i < ctx->data_index; i++)
656 {
657 if (ctx->trace_data[ctx->pipe_index + 1].pipestat & ETMV1_TRACESYNC_CYCLE)
658 apo--;
659 }
660
661 /* extract up to four 7-bit packets */
662 do {
663 if ((retval = etmv1_next_packet(ctx, &packet, (shift == 0) ? apo + 1 : 0)) != 0)
664 return -1;
665 ctx->last_branch &= ~(0x7f << shift);
666 ctx->last_branch |= (packet & 0x7f) << shift;
667 shift += 7;
668 } while ((packet & 0x80) && (shift < 28));
669
670 /* one last packet holding 4 bits of the address, plus the branch reason code */
671 if ((shift == 28) && (packet & 0x80))
672 {
673 if ((retval = etmv1_next_packet(ctx, &packet, 0)) != 0)
674 return -1;
675 ctx->last_branch &= 0x0fffffff;
676 ctx->last_branch |= (packet & 0x0f) << 28;
677 ctx->last_branch_reason = (packet & 0x70) >> 4;
678 shift += 4;
679 }
680 else
681 {
682 ctx->last_branch_reason = 0;
683 }
684
685 if (shift == 32)
686 {
687 ctx->pc_ok = 1;
688 }
689
690 /* if a full address was output, we might have branched into Jazelle state */
691 if ((shift == 32) && (packet & 0x80))
692 {
693 ctx->core_state = ARMV4_5_STATE_JAZELLE;
694 }
695 else
696 {
697 /* if we didn't branch into Jazelle state, the current processor state is
698 * encoded in bit 0 of the branch target address */
699 if (ctx->last_branch & 0x1)
700 {
701 ctx->core_state = ARMV4_5_STATE_THUMB;
702 ctx->last_branch &= ~0x1;
703 }
704 else
705 {
706 ctx->core_state = ARMV4_5_STATE_ARM;
707 ctx->last_branch &= ~0x3;
708 }
709 }
710
711 return 0;
712 }
713
714 int etmv1_data(etm_context_t *ctx, int size, u32 *data)
715 {
716 int j;
717 u8 buf[4];
718 int retval;
719
720 for (j = 0; j < size; j++)
721 {
722 if ((retval = etmv1_next_packet(ctx, &buf[j], 0)) != 0)
723 return -1;
724 }
725
726 if (size == 8)
727 ERROR("TODO: add support for 64-bit values");
728 else if (size == 4)
729 *data = target_buffer_get_u32(ctx->target, buf);
730 else if (size == 2)
731 *data = target_buffer_get_u16(ctx->target, buf);
732 else if (size == 1)
733 *data = buf[0];
734
735 return 0;
736 }
737
738 int etmv1_analyze_trace(etm_context_t *ctx, struct command_context_s *cmd_ctx)
739 {
740 int retval;
741 arm_instruction_t instruction;
742
743 /* read the trace data if it wasn't read already */
744 if (ctx->trace_depth == 0)
745 ctx->capture_driver->read_trace(ctx);
746
747 /* start at the beginning of the captured trace */
748 ctx->pipe_index = 0;
749 ctx->data_index = 0;
750 ctx->data_half = 0;
751
752 /* neither the PC nor the data pointer are valid */
753 ctx->pc_ok = 0;
754 ctx->ptr_ok = 0;
755
756 while (ctx->pipe_index < ctx->trace_depth)
757 {
758 u8 pipestat = ctx->trace_data[ctx->pipe_index].pipestat;
759 u32 next_pc = ctx->current_pc;
760 u32 old_data_index = ctx->data_index;
761 u32 old_data_half = ctx->data_half;
762 u32 old_index = ctx->pipe_index;
763 u32 last_instruction = ctx->last_instruction;
764 u32 cycles = 0;
765 int current_pc_ok = ctx->pc_ok;
766
767 if (ctx->trace_data[ctx->pipe_index].flags & ETMV1_TRIGGER_CYCLE)
768 {
769 command_print(cmd_ctx, "--- trigger ---");
770 }
771
772 /* instructions execute in IE/D or BE/D cycles */
773 if ((pipestat == STAT_IE) || (pipestat == STAT_ID))
774 ctx->last_instruction = ctx->pipe_index;
775
776 /* if we don't have a valid pc skip until we reach an indirect branch */
777 if ((!ctx->pc_ok) && (pipestat != STAT_BE))
778 {
779 ctx->pipe_index++;
780 continue;
781 }
782
783 /* any indirect branch could have interrupted instruction flow
784 * - the branch reason code could indicate a trace discontinuity
785 * - a branch to the exception vectors indicates an exception
786 */
787 if ((pipestat == STAT_BE) || (pipestat == STAT_BD))
788 {
789 /* backup current data index, to be able to consume the branch address
790 * before examining data address and values
791 */
792 old_data_index = ctx->data_index;
793 old_data_half = ctx->data_half;
794
795 ctx->last_instruction = ctx->pipe_index;
796
797 if ((retval = etmv1_branch_address(ctx)) != 0)
798 {
799 /* negative return value from etmv1_branch_address means we ran out of packets,
800 * quit analysing the trace */
801 if (retval < 0)
802 break;
803
804 /* a positive return values means the current branch was abandoned,
805 * and a new branch was encountered in cycle ctx->pipe_index + retval;
806 */
807 WARNING("abandoned branch encountered, correctnes of analysis uncertain");
808 ctx->pipe_index += retval;
809 continue;
810 }
811
812 /* skip over APO cycles */
813 ctx->pipe_index += 2;
814
815 switch (ctx->last_branch_reason)
816 {
817 case 0x0: /* normal PC change */
818 next_pc = ctx->last_branch;
819 break;
820 case 0x1: /* tracing enabled */
821 command_print(cmd_ctx, "--- tracing enabled at 0x%8.8x ---", ctx->last_branch);
822 ctx->current_pc = ctx->last_branch;
823 ctx->pipe_index++;
824 continue;
825 break;
826 case 0x2: /* trace restarted after FIFO overflow */
827 command_print(cmd_ctx, "--- trace restarted after FIFO overflow at 0x%8.8x ---", ctx->last_branch);
828 ctx->current_pc = ctx->last_branch;
829 ctx->pipe_index++;
830 continue;
831 break;
832 case 0x3: /* exit from debug state */
833 command_print(cmd_ctx, "--- exit from debug state at 0x%8.8x ---", ctx->last_branch);
834 ctx->current_pc = ctx->last_branch;
835 ctx->pipe_index++;
836 continue;
837 break;
838 case 0x4: /* periodic synchronization point */
839 next_pc = ctx->last_branch;
840 /* if we had no valid PC prior to this synchronization point,
841 * we have to move on with the next trace cycle
842 */
843 if (!current_pc_ok)
844 {
845 command_print(cmd_ctx, "--- periodic synchronization point at 0x%8.8x ---", next_pc);
846 ctx->current_pc = next_pc;
847 ctx->pipe_index++;
848 continue;
849 }
850 break;
851 default: /* reserved */
852 ERROR("BUG: branch reason code 0x%x is reserved", ctx->last_branch_reason);
853 exit(-1);
854 break;
855 }
856
857 /* if we got here the branch was a normal PC change
858 * (or a periodic synchronization point, which means the same for that matter)
859 * if we didn't accquire a complete PC continue with the next cycle
860 */
861 if (!ctx->pc_ok)
862 continue;
863
864 /* indirect branch to the exception vector means an exception occured */
865 if (((ctx->last_branch >= 0x0) && (ctx->last_branch <= 0x20))
866 || ((ctx->last_branch >= 0xffff0000) && (ctx->last_branch <= 0xffff0020)))
867 {
868 if ((ctx->last_branch & 0xff) == 0x10)
869 {
870 command_print(cmd_ctx, "data abort");
871 }
872 else
873 {
874 command_print(cmd_ctx, "exception vector 0x%2.2x", ctx->last_branch);
875 ctx->current_pc = ctx->last_branch;
876 ctx->pipe_index++;
877 continue;
878 }
879 }
880 }
881
882 /* an instruction was executed (or not, depending on the condition flags)
883 * retrieve it from the image for displaying */
884 if (ctx->pc_ok && (pipestat != STAT_WT) && (pipestat != STAT_TD) &&
885 !(((pipestat == STAT_BE) || (pipestat == STAT_BD)) &&
886 ((ctx->last_branch_reason != 0x0) && (ctx->last_branch_reason != 0x4))))
887 {
888 if ((retval = etm_read_instruction(ctx, &instruction)) != ERROR_OK)
889 {
890 /* can't continue tracing with no image available */
891 if (retval == ERROR_TRACE_IMAGE_UNAVAILABLE)
892 {
893 return retval;
894 }
895 else if (retval == ERROR_TRACE_INSTRUCTION_UNAVAILABLE)
896 {
897 /* TODO: handle incomplete images
898 * for now we just quit the analsysis*/
899 return retval;
900 }
901 }
902
903 cycles = old_index - last_instruction;
904 }
905
906 if ((pipestat == STAT_ID) || (pipestat == STAT_BD))
907 {
908 u32 new_data_index = ctx->data_index;
909 u32 new_data_half = ctx->data_half;
910
911 /* in case of a branch with data, the branch target address was consumed before
912 * we temporarily go back to the saved data index */
913 if (pipestat == STAT_BD)
914 {
915 ctx->data_index = old_data_index;
916 ctx->data_half = old_data_half;
917 }
918
919 if (ctx->tracemode & ETMV1_TRACE_ADDR)
920 {
921 u8 packet;
922 int shift = 0;
923
924 do {
925 if ((retval = etmv1_next_packet(ctx, &packet, 0)) != 0)
926 return ERROR_ETM_ANALYSIS_FAILED;
927 ctx->last_ptr &= ~(0x7f << shift);
928 ctx->last_ptr |= (packet & 0x7f) << shift;
929 shift += 7;
930 } while ((packet & 0x80) && (shift < 32));
931
932 if (shift >= 32)
933 ctx->ptr_ok = 1;
934
935 if (ctx->ptr_ok)
936 {
937 command_print(cmd_ctx, "address: 0x%8.8x", ctx->last_ptr);
938 }
939 }
940
941 if (ctx->tracemode & ETMV1_TRACE_DATA)
942 {
943 if ((instruction.type == ARM_LDM) || (instruction.type == ARM_STM))
944 {
945 int i;
946 for (i = 0; i < 16; i++)
947 {
948 if (instruction.info.load_store_multiple.register_list & (1 << i))
949 {
950 u32 data;
951 if (etmv1_data(ctx, 4, &data) != 0)
952 return ERROR_ETM_ANALYSIS_FAILED;
953 command_print(cmd_ctx, "data: 0x%8.8x", data);
954 }
955 }
956 }
957 else if ((instruction.type >= ARM_LDR) && (instruction.type <= ARM_STRH))
958 {
959 u32 data;
960 if (etmv1_data(ctx, arm_access_size(&instruction), &data) != 0)
961 return ERROR_ETM_ANALYSIS_FAILED;
962 command_print(cmd_ctx, "data: 0x%8.8x", data);
963 }
964 }
965
966 /* restore data index after consuming BD address and data */
967 if (pipestat == STAT_BD)
968 {
969 ctx->data_index = new_data_index;
970 ctx->data_half = new_data_half;
971 }
972 }
973
974 /* adjust PC */
975 if ((pipestat == STAT_IE) || (pipestat == STAT_ID))
976 {
977 if (((instruction.type == ARM_B) ||
978 (instruction.type == ARM_BL) ||
979 (instruction.type == ARM_BLX)) &&
980 (instruction.info.b_bl_bx_blx.target_address != -1))
981 {
982 next_pc = instruction.info.b_bl_bx_blx.target_address;
983 }
984 else
985 {
986 next_pc += (ctx->core_state == ARMV4_5_STATE_ARM) ? 4 : 2;
987 }
988 }
989 else if (pipestat == STAT_IN)
990 {
991 next_pc += (ctx->core_state == ARMV4_5_STATE_ARM) ? 4 : 2;
992 }
993
994 if ((pipestat != STAT_TD) && (pipestat != STAT_WT))
995 {
996 char cycles_text[32] = "";
997
998 /* if the trace was captured with cycle accurate tracing enabled,
999 * output the number of cycles since the last executed instruction
1000 */
1001 if (ctx->tracemode & ETMV1_CYCLE_ACCURATE)
1002 {
1003 snprintf(cycles_text, 32, " (%i %s)",
1004 cycles,
1005 (cycles == 1) ? "cycle" : "cycles");
1006 }
1007
1008 command_print(cmd_ctx, "%s%s%s",
1009 instruction.text,
1010 (pipestat == STAT_IN) ? " (not executed)" : "",
1011 cycles_text);
1012
1013 ctx->current_pc = next_pc;
1014
1015 /* packets for an instruction don't start on or before the preceding
1016 * functional pipestat (i.e. other than WT or TD)
1017 */
1018 if (ctx->data_index <= ctx->pipe_index)
1019 {
1020 ctx->data_index = ctx->pipe_index + 1;
1021 ctx->data_half = 0;
1022 }
1023 }
1024
1025 ctx->pipe_index += 1;
1026 }
1027
1028 return ERROR_OK;
1029 }
1030
1031 int handle_etm_tracemode_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1032 {
1033 target_t *target;
1034 armv4_5_common_t *armv4_5;
1035 arm7_9_common_t *arm7_9;
1036 etmv1_tracemode_t tracemode;
1037
1038 target = get_current_target(cmd_ctx);
1039
1040 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1041 {
1042 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1043 return ERROR_OK;
1044 }
1045
1046 if (!arm7_9->etm_ctx)
1047 {
1048 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1049 return ERROR_OK;
1050 }
1051
1052 tracemode = arm7_9->etm_ctx->tracemode;
1053
1054 if (argc == 4)
1055 {
1056 if (strcmp(args[0], "none") == 0)
1057 {
1058 tracemode = ETMV1_TRACE_NONE;
1059 }
1060 else if (strcmp(args[0], "data") == 0)
1061 {
1062 tracemode = ETMV1_TRACE_DATA;
1063 }
1064 else if (strcmp(args[0], "address") == 0)
1065 {
1066 tracemode = ETMV1_TRACE_ADDR;
1067 }
1068 else if (strcmp(args[0], "all") == 0)
1069 {
1070 tracemode = ETMV1_TRACE_DATA | ETMV1_TRACE_ADDR;
1071 }
1072 else
1073 {
1074 command_print(cmd_ctx, "invalid option '%s'", args[0]);
1075 return ERROR_OK;
1076 }
1077
1078 switch (strtol(args[1], NULL, 0))
1079 {
1080 case 0:
1081 tracemode |= ETMV1_CONTEXTID_NONE;
1082 break;
1083 case 8:
1084 tracemode |= ETMV1_CONTEXTID_8;
1085 break;
1086 case 16:
1087 tracemode |= ETMV1_CONTEXTID_16;
1088 break;
1089 case 32:
1090 tracemode |= ETMV1_CONTEXTID_32;
1091 break;
1092 default:
1093 command_print(cmd_ctx, "invalid option '%s'", args[1]);
1094 return ERROR_OK;
1095 }
1096
1097 if (strcmp(args[2], "enable") == 0)
1098 {
1099 tracemode |= ETMV1_CYCLE_ACCURATE;
1100 }
1101 else if (strcmp(args[2], "disable") == 0)
1102 {
1103 tracemode |= 0;
1104 }
1105 else
1106 {
1107 command_print(cmd_ctx, "invalid option '%s'", args[2]);
1108 return ERROR_OK;
1109 }
1110
1111 if (strcmp(args[3], "enable") == 0)
1112 {
1113 tracemode |= ETMV1_BRANCH_OUTPUT;
1114 }
1115 else if (strcmp(args[3], "disable") == 0)
1116 {
1117 tracemode |= 0;
1118 }
1119 else
1120 {
1121 command_print(cmd_ctx, "invalid option '%s'", args[2]);
1122 return ERROR_OK;
1123 }
1124 }
1125 else if (argc != 0)
1126 {
1127 command_print(cmd_ctx, "usage: configure trace mode <none|data|address|all> <context id bits> <cycle accurate> <branch output>");
1128 return ERROR_OK;
1129 }
1130
1131 command_print(cmd_ctx, "current tracemode configuration:");
1132
1133 switch (tracemode & ETMV1_TRACE_MASK)
1134 {
1135 case ETMV1_TRACE_NONE:
1136 command_print(cmd_ctx, "data tracing: none");
1137 break;
1138 case ETMV1_TRACE_DATA:
1139 command_print(cmd_ctx, "data tracing: data only");
1140 break;
1141 case ETMV1_TRACE_ADDR:
1142 command_print(cmd_ctx, "data tracing: address only");
1143 break;
1144 case ETMV1_TRACE_DATA | ETMV1_TRACE_ADDR:
1145 command_print(cmd_ctx, "data tracing: address and data");
1146 break;
1147 }
1148
1149 switch (tracemode & ETMV1_CONTEXTID_MASK)
1150 {
1151 case ETMV1_CONTEXTID_NONE:
1152 command_print(cmd_ctx, "contextid tracing: none");
1153 break;
1154 case ETMV1_CONTEXTID_8:
1155 command_print(cmd_ctx, "contextid tracing: 8 bit");
1156 break;
1157 case ETMV1_CONTEXTID_16:
1158 command_print(cmd_ctx, "contextid tracing: 16 bit");
1159 break;
1160 case ETMV1_CONTEXTID_32:
1161 command_print(cmd_ctx, "contextid tracing: 32 bit");
1162 break;
1163 }
1164
1165 if (tracemode & ETMV1_CYCLE_ACCURATE)
1166 {
1167 command_print(cmd_ctx, "cycle-accurate tracing enabled");
1168 }
1169 else
1170 {
1171 command_print(cmd_ctx, "cycle-accurate tracing disabled");
1172 }
1173
1174 if (tracemode & ETMV1_BRANCH_OUTPUT)
1175 {
1176 command_print(cmd_ctx, "full branch address output enabled");
1177 }
1178 else
1179 {
1180 command_print(cmd_ctx, "full branch address output disabled");
1181 }
1182
1183 /* only update ETM_CTRL register if tracemode changed */
1184 if (arm7_9->etm_ctx->tracemode != tracemode)
1185 {
1186 reg_t *etm_ctrl_reg = &arm7_9->etm_ctx->reg_cache->reg_list[ETM_CTRL];
1187
1188 etm_get_reg(etm_ctrl_reg);
1189
1190 buf_set_u32(etm_ctrl_reg->value, 2, 2, tracemode & ETMV1_TRACE_MASK);
1191 buf_set_u32(etm_ctrl_reg->value, 14, 2, (tracemode & ETMV1_CONTEXTID_MASK) >> 4);
1192 buf_set_u32(etm_ctrl_reg->value, 12, 1, (tracemode & ETMV1_CYCLE_ACCURATE) >> 8);
1193 buf_set_u32(etm_ctrl_reg->value, 8, 1, (tracemode & ETMV1_BRANCH_OUTPUT) >> 9);
1194 etm_store_reg(etm_ctrl_reg);
1195
1196 arm7_9->etm_ctx->tracemode = tracemode;
1197
1198 /* invalidate old trace data */
1199 arm7_9->etm_ctx->capture_status = TRACE_IDLE;
1200 if (arm7_9->etm_ctx->trace_depth > 0)
1201 {
1202 free(arm7_9->etm_ctx->trace_data);
1203 }
1204 arm7_9->etm_ctx->trace_depth = 0;
1205 }
1206
1207 return ERROR_OK;
1208 }
1209
1210 int handle_etm_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1211 {
1212 target_t *target;
1213 armv4_5_common_t *armv4_5;
1214 arm7_9_common_t *arm7_9;
1215 etm_portmode_t portmode = 0x0;
1216 etm_context_t *etm_ctx = malloc(sizeof(etm_context_t));
1217 int i;
1218
1219 if (argc != 5)
1220 {
1221 ERROR("incomplete 'etm config <target> <port_width> <port_mode> <clocking> <capture_driver>' command");
1222 exit(-1);
1223 }
1224
1225 target = get_target_by_num(strtoul(args[0], NULL, 0));
1226
1227 if (!target)
1228 {
1229 ERROR("target number '%s' not defined", args[0]);
1230 exit(-1);
1231 }
1232
1233 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1234 {
1235 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1236 return ERROR_OK;
1237 }
1238
1239 switch (strtoul(args[1], NULL, 0))
1240 {
1241 case 4:
1242 portmode |= ETM_PORT_4BIT;
1243 break;
1244 case 8:
1245 portmode |= ETM_PORT_8BIT;
1246 break;
1247 case 16:
1248 portmode |= ETM_PORT_16BIT;
1249 break;
1250 default:
1251 command_print(cmd_ctx, "unsupported ETM port width '%s', must be 4, 8 or 16", args[1]);
1252 return ERROR_OK;
1253 }
1254
1255 if (strcmp("normal", args[2]) == 0)
1256 {
1257 portmode |= ETM_PORT_NORMAL;
1258 }
1259 else if (strcmp("multiplexed", args[2]) == 0)
1260 {
1261 portmode |= ETM_PORT_MUXED;
1262 }
1263 else if (strcmp("demultiplexed", args[2]) == 0)
1264 {
1265 portmode |= ETM_PORT_DEMUXED;
1266 }
1267 else
1268 {
1269 command_print(cmd_ctx, "unsupported ETM port mode '%s', must be 'normal', 'multiplexed' or 'demultiplexed'", args[2]);
1270 return ERROR_OK;
1271 }
1272
1273 if (strcmp("half", args[3]) == 0)
1274 {
1275 portmode |= ETM_PORT_HALF_CLOCK;
1276 }
1277 else if (strcmp("full", args[3]) == 0)
1278 {
1279 portmode |= ETM_PORT_FULL_CLOCK;
1280 }
1281 else
1282 {
1283 command_print(cmd_ctx, "unsupported ETM port clocking '%s', must be 'full' or 'half'", args[3]);
1284 return ERROR_OK;
1285 }
1286
1287 for (i=0; etm_capture_drivers[i]; i++)
1288 {
1289 if (strcmp(args[4], etm_capture_drivers[i]->name) == 0)
1290 {
1291 if (etm_capture_drivers[i]->register_commands(cmd_ctx) != ERROR_OK)
1292 {
1293 free(etm_ctx);
1294 exit(-1);
1295 }
1296
1297 etm_ctx->capture_driver = etm_capture_drivers[i];
1298
1299 break;
1300 }
1301 }
1302
1303 if (!etm_capture_drivers[i])
1304 {
1305 /* no supported capture driver found, don't register an ETM */
1306 free(etm_ctx);
1307 ERROR("trace capture driver '%s' not found", args[4]);
1308 return ERROR_OK;
1309 }
1310
1311 etm_ctx->target = target;
1312 etm_ctx->trigger_percent = 50;
1313 etm_ctx->trace_data = NULL;
1314 etm_ctx->trace_depth = 0;
1315 etm_ctx->portmode = portmode;
1316 etm_ctx->tracemode = 0x0;
1317 etm_ctx->core_state = ARMV4_5_STATE_ARM;
1318 etm_ctx->image = NULL;
1319 etm_ctx->pipe_index = 0;
1320 etm_ctx->data_index = 0;
1321 etm_ctx->current_pc = 0x0;
1322 etm_ctx->pc_ok = 0;
1323 etm_ctx->last_branch = 0x0;
1324 etm_ctx->last_branch_reason = 0x0;
1325 etm_ctx->last_ptr = 0x0;
1326 etm_ctx->ptr_ok = 0x0;
1327 etm_ctx->context_id = 0x0;
1328 etm_ctx->last_instruction = 0;
1329
1330 arm7_9->etm_ctx = etm_ctx;
1331
1332 etm_register_user_commands(cmd_ctx);
1333
1334 return ERROR_OK;
1335 }
1336
1337 int handle_etm_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1338 {
1339 target_t *target;
1340 armv4_5_common_t *armv4_5;
1341 arm7_9_common_t *arm7_9;
1342 reg_t *etm_config_reg;
1343 reg_t *etm_sys_config_reg;
1344
1345 int max_port_size;
1346
1347 target = get_current_target(cmd_ctx);
1348
1349 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1350 {
1351 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1352 return ERROR_OK;
1353 }
1354
1355 if (!arm7_9->etm_ctx)
1356 {
1357 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1358 return ERROR_OK;
1359 }
1360
1361 etm_config_reg = &arm7_9->etm_ctx->reg_cache->reg_list[ETM_CONFIG];
1362 etm_sys_config_reg = &arm7_9->etm_ctx->reg_cache->reg_list[ETM_SYS_CONFIG];
1363
1364 etm_get_reg(etm_config_reg);
1365 command_print(cmd_ctx, "pairs of address comparators: %i", buf_get_u32(etm_config_reg->value, 0, 4));
1366 command_print(cmd_ctx, "pairs of data comparators: %i", buf_get_u32(etm_config_reg->value, 4, 4));
1367 command_print(cmd_ctx, "memory map decoders: %i", buf_get_u32(etm_config_reg->value, 8, 5));
1368 command_print(cmd_ctx, "number of counters: %i", buf_get_u32(etm_config_reg->value, 13, 3));
1369 command_print(cmd_ctx, "sequencer %spresent",
1370 (buf_get_u32(etm_config_reg->value, 16, 1) == 1) ? "" : "not ");
1371 command_print(cmd_ctx, "number of ext. inputs: %i", buf_get_u32(etm_config_reg->value, 17, 3));
1372 command_print(cmd_ctx, "number of ext. outputs: %i", buf_get_u32(etm_config_reg->value, 20, 3));
1373 command_print(cmd_ctx, "FIFO full %spresent",
1374 (buf_get_u32(etm_config_reg->value, 23, 1) == 1) ? "" : "not ");
1375 command_print(cmd_ctx, "protocol version: %i", buf_get_u32(etm_config_reg->value, 28, 3));
1376
1377 etm_get_reg(etm_sys_config_reg);
1378
1379 switch (buf_get_u32(etm_sys_config_reg->value, 0, 3))
1380 {
1381 case 0:
1382 max_port_size = 4;
1383 break;
1384 case 1:
1385 max_port_size = 8;
1386 break;
1387 case 2:
1388 max_port_size = 16;
1389 break;
1390 }
1391 command_print(cmd_ctx, "max. port size: %i", max_port_size);
1392
1393 command_print(cmd_ctx, "half-rate clocking %ssupported",
1394 (buf_get_u32(etm_sys_config_reg->value, 3, 1) == 1) ? "" : "not ");
1395 command_print(cmd_ctx, "full-rate clocking %ssupported",
1396 (buf_get_u32(etm_sys_config_reg->value, 4, 1) == 1) ? "" : "not ");
1397 command_print(cmd_ctx, "normal trace format %ssupported",
1398 (buf_get_u32(etm_sys_config_reg->value, 5, 1) == 1) ? "" : "not ");
1399 command_print(cmd_ctx, "multiplex trace format %ssupported",
1400 (buf_get_u32(etm_sys_config_reg->value, 6, 1) == 1) ? "" : "not ");
1401 command_print(cmd_ctx, "demultiplex trace format %ssupported",
1402 (buf_get_u32(etm_sys_config_reg->value, 7, 1) == 1) ? "" : "not ");
1403 command_print(cmd_ctx, "FIFO full %ssupported",
1404 (buf_get_u32(etm_sys_config_reg->value, 8, 1) == 1) ? "" : "not ");
1405
1406 return ERROR_OK;
1407 }
1408
1409 int handle_etm_status_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1410 {
1411 target_t *target;
1412 armv4_5_common_t *armv4_5;
1413 arm7_9_common_t *arm7_9;
1414 trace_status_t trace_status;
1415
1416 target = get_current_target(cmd_ctx);
1417
1418 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1419 {
1420 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1421 return ERROR_OK;
1422 }
1423
1424 if (!arm7_9->etm_ctx)
1425 {
1426 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1427 return ERROR_OK;
1428 }
1429
1430 trace_status = arm7_9->etm_ctx->capture_driver->status(arm7_9->etm_ctx);
1431
1432 if (trace_status == TRACE_IDLE)
1433 {
1434 command_print(cmd_ctx, "tracing is idle");
1435 }
1436 else
1437 {
1438 static char *completed = " completed";
1439 static char *running = " is running";
1440 static char *overflowed = ", trace overflowed";
1441 static char *triggered = ", trace triggered";
1442
1443 command_print(cmd_ctx, "trace collection%s%s%s",
1444 (trace_status & TRACE_RUNNING) ? running : completed,
1445 (trace_status & TRACE_OVERFLOWED) ? overflowed : "",
1446 (trace_status & TRACE_TRIGGERED) ? triggered : "");
1447
1448 if (arm7_9->etm_ctx->trace_depth > 0)
1449 {
1450 command_print(cmd_ctx, "%i frames of trace data read", arm7_9->etm_ctx->trace_depth);
1451 }
1452 }
1453
1454 return ERROR_OK;
1455 }
1456
1457 int handle_etm_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1458 {
1459 target_t *target;
1460 armv4_5_common_t *armv4_5;
1461 arm7_9_common_t *arm7_9;
1462 etm_context_t *etm_ctx;
1463
1464 if (argc < 1)
1465 {
1466 command_print(cmd_ctx, "usage: etm image <file> [base address] [type]");
1467 return ERROR_OK;
1468 }
1469
1470 target = get_current_target(cmd_ctx);
1471
1472 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1473 {
1474 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1475 return ERROR_OK;
1476 }
1477
1478 if (!(etm_ctx = arm7_9->etm_ctx))
1479 {
1480 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1481 return ERROR_OK;
1482 }
1483
1484 if (etm_ctx->image)
1485 {
1486 image_close(etm_ctx->image);
1487 free(etm_ctx->image);
1488 command_print(cmd_ctx, "previously loaded image found and closed");
1489 }
1490
1491 etm_ctx->image = malloc(sizeof(image_t));
1492 etm_ctx->image->base_address_set = 0;
1493 etm_ctx->image->start_address_set = 0;
1494
1495 /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
1496 if (argc >= 2)
1497 {
1498 etm_ctx->image->base_address_set = 1;
1499 etm_ctx->image->base_address = strtoul(args[1], NULL, 0);
1500 }
1501 else
1502 {
1503 etm_ctx->image->base_address_set = 0;
1504 }
1505
1506 if (image_open(etm_ctx->image, args[0], (argc >= 3) ? args[2] : NULL) != ERROR_OK)
1507 {
1508 command_print(cmd_ctx, "image opening error: %s", etm_ctx->image->error_str);
1509 free(etm_ctx->image);
1510 etm_ctx->image = NULL;
1511 return ERROR_OK;
1512 }
1513
1514 return ERROR_OK;
1515 }
1516
1517 int handle_etm_dump_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1518 {
1519 fileio_t file;
1520 target_t *target;
1521 armv4_5_common_t *armv4_5;
1522 arm7_9_common_t *arm7_9;
1523 etm_context_t *etm_ctx;
1524 int i;
1525
1526 if (argc != 1)
1527 {
1528 command_print(cmd_ctx, "usage: etm dump <file>");
1529 return ERROR_OK;
1530 }
1531
1532 target = get_current_target(cmd_ctx);
1533
1534 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1535 {
1536 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1537 return ERROR_OK;
1538 }
1539
1540 if (!(etm_ctx = arm7_9->etm_ctx))
1541 {
1542 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1543 return ERROR_OK;
1544 }
1545
1546 if (etm_ctx->capture_driver->status == TRACE_IDLE)
1547 {
1548 command_print(cmd_ctx, "trace capture wasn't enabled, no trace data captured");
1549 return ERROR_OK;
1550 }
1551
1552 if (etm_ctx->capture_driver->status(etm_ctx) & TRACE_RUNNING)
1553 {
1554 /* TODO: if on-the-fly capture is to be supported, this needs to be changed */
1555 command_print(cmd_ctx, "trace capture not completed");
1556 return ERROR_OK;
1557 }
1558
1559 /* read the trace data if it wasn't read already */
1560 if (etm_ctx->trace_depth == 0)
1561 etm_ctx->capture_driver->read_trace(etm_ctx);
1562
1563 if (fileio_open(&file, args[0], FILEIO_WRITE, FILEIO_BINARY) != ERROR_OK)
1564 {
1565 command_print(cmd_ctx, "file open error: %s", file.error_str);
1566 return ERROR_OK;
1567 }
1568
1569 fileio_write_u32(&file, etm_ctx->capture_status);
1570 fileio_write_u32(&file, etm_ctx->portmode);
1571 fileio_write_u32(&file, etm_ctx->tracemode);
1572 fileio_write_u32(&file, etm_ctx->trace_depth);
1573
1574 for (i = 0; i < etm_ctx->trace_depth; i++)
1575 {
1576 fileio_write_u32(&file, etm_ctx->trace_data[i].pipestat);
1577 fileio_write_u32(&file, etm_ctx->trace_data[i].packet);
1578 fileio_write_u32(&file, etm_ctx->trace_data[i].flags);
1579 }
1580
1581 fileio_close(&file);
1582
1583 return ERROR_OK;
1584 }
1585
1586 int handle_etm_load_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1587 {
1588 fileio_t file;
1589 target_t *target;
1590 armv4_5_common_t *armv4_5;
1591 arm7_9_common_t *arm7_9;
1592 etm_context_t *etm_ctx;
1593 int i;
1594
1595 if (argc != 1)
1596 {
1597 command_print(cmd_ctx, "usage: etm load <file>");
1598 return ERROR_OK;
1599 }
1600
1601 target = get_current_target(cmd_ctx);
1602
1603 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1604 {
1605 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1606 return ERROR_OK;
1607 }
1608
1609 if (!(etm_ctx = arm7_9->etm_ctx))
1610 {
1611 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1612 return ERROR_OK;
1613 }
1614
1615 if (etm_ctx->capture_driver->status(etm_ctx) & TRACE_RUNNING)
1616 {
1617 command_print(cmd_ctx, "trace capture running, stop first");
1618 return ERROR_OK;
1619 }
1620
1621 if (fileio_open(&file, args[0], FILEIO_READ, FILEIO_BINARY) != ERROR_OK)
1622 {
1623 command_print(cmd_ctx, "file open error: %s", file.error_str);
1624 return ERROR_OK;
1625 }
1626
1627 if (file.size % 4)
1628 {
1629 command_print(cmd_ctx, "size isn't a multiple of 4, no valid trace data");
1630 return ERROR_OK;
1631 }
1632
1633 if (etm_ctx->trace_depth > 0)
1634 {
1635 free(etm_ctx->trace_data);
1636 }
1637
1638 fileio_read_u32(&file, &etm_ctx->capture_status);
1639 fileio_read_u32(&file, &etm_ctx->portmode);
1640 fileio_read_u32(&file, &etm_ctx->tracemode);
1641 fileio_read_u32(&file, &etm_ctx->trace_depth);
1642
1643 etm_ctx->trace_data = malloc(sizeof(etmv1_trace_data_t) * etm_ctx->trace_depth);
1644
1645 for (i = 0; i < etm_ctx->trace_depth; i++)
1646 {
1647 u32 pipestat, packet, flags;
1648 fileio_read_u32(&file, &pipestat);
1649 fileio_read_u32(&file, &packet);
1650 fileio_read_u32(&file, &flags);
1651 etm_ctx->trace_data[i].pipestat = pipestat & 0xff;
1652 etm_ctx->trace_data[i].packet = packet & 0xffff;
1653 etm_ctx->trace_data[i].flags = flags;
1654 }
1655
1656 fileio_close(&file);
1657
1658 return ERROR_OK;
1659 }
1660
1661 int handle_etm_trigger_percent_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1662 {
1663 target_t *target;
1664 armv4_5_common_t *armv4_5;
1665 arm7_9_common_t *arm7_9;
1666 etm_context_t *etm_ctx;
1667
1668 target = get_current_target(cmd_ctx);
1669
1670 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1671 {
1672 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1673 return ERROR_OK;
1674 }
1675
1676 if (!(etm_ctx = arm7_9->etm_ctx))
1677 {
1678 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1679 return ERROR_OK;
1680 }
1681
1682 if (argc > 0)
1683 {
1684 u32 new_value = strtoul(args[0], NULL, 0);
1685
1686 if ((new_value < 2) || (new_value > 100))
1687 {
1688 command_print(cmd_ctx, "valid settings are 2% to 100%");
1689 }
1690 else
1691 {
1692 etm_ctx->trigger_percent = new_value;
1693 }
1694 }
1695
1696 command_print(cmd_ctx, "%i percent of the tracebuffer reserved for after the trigger", etm_ctx->trigger_percent);
1697
1698 return ERROR_OK;
1699 }
1700
1701 int handle_etm_start_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1702 {
1703 target_t *target;
1704 armv4_5_common_t *armv4_5;
1705 arm7_9_common_t *arm7_9;
1706 etm_context_t *etm_ctx;
1707 reg_t *etm_ctrl_reg;
1708
1709 target = get_current_target(cmd_ctx);
1710
1711 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1712 {
1713 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1714 return ERROR_OK;
1715 }
1716
1717 if (!(etm_ctx = arm7_9->etm_ctx))
1718 {
1719 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1720 return ERROR_OK;
1721 }
1722
1723 /* invalidate old tracing data */
1724 arm7_9->etm_ctx->capture_status = TRACE_IDLE;
1725 if (arm7_9->etm_ctx->trace_depth > 0)
1726 {
1727 free(arm7_9->etm_ctx->trace_data);
1728 }
1729 arm7_9->etm_ctx->trace_depth = 0;
1730
1731 etm_ctrl_reg = &arm7_9->etm_ctx->reg_cache->reg_list[ETM_CTRL];
1732 etm_get_reg(etm_ctrl_reg);
1733
1734 /* Clear programming bit (10), set port selection bit (11) */
1735 buf_set_u32(etm_ctrl_reg->value, 10, 2, 0x2);
1736
1737 etm_store_reg(etm_ctrl_reg);
1738 jtag_execute_queue();
1739
1740 etm_ctx->capture_driver->start_capture(etm_ctx);
1741
1742 return ERROR_OK;
1743 }
1744
1745 int handle_etm_stop_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1746 {
1747 target_t *target;
1748 armv4_5_common_t *armv4_5;
1749 arm7_9_common_t *arm7_9;
1750 etm_context_t *etm_ctx;
1751 reg_t *etm_ctrl_reg;
1752
1753 target = get_current_target(cmd_ctx);
1754
1755 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1756 {
1757 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1758 return ERROR_OK;
1759 }
1760
1761 if (!(etm_ctx = arm7_9->etm_ctx))
1762 {
1763 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1764 return ERROR_OK;
1765 }
1766
1767 etm_ctrl_reg = &arm7_9->etm_ctx->reg_cache->reg_list[ETM_CTRL];
1768 etm_get_reg(etm_ctrl_reg);
1769
1770 /* Set programming bit (10), clear port selection bit (11) */
1771 buf_set_u32(etm_ctrl_reg->value, 10, 2, 0x1);
1772
1773 etm_store_reg(etm_ctrl_reg);
1774 jtag_execute_queue();
1775
1776 etm_ctx->capture_driver->stop_capture(etm_ctx);
1777
1778 return ERROR_OK;
1779 }
1780
1781 int handle_etm_analyze_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1782 {
1783 target_t *target;
1784 armv4_5_common_t *armv4_5;
1785 arm7_9_common_t *arm7_9;
1786 etm_context_t *etm_ctx;
1787 int retval;
1788
1789 target = get_current_target(cmd_ctx);
1790
1791 if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1792 {
1793 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1794 return ERROR_OK;
1795 }
1796
1797 if (!(etm_ctx = arm7_9->etm_ctx))
1798 {
1799 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1800 return ERROR_OK;
1801 }
1802
1803 if ((retval = etmv1_analyze_trace(etm_ctx, cmd_ctx)) != ERROR_OK)
1804 {
1805 switch(retval)
1806 {
1807 case ERROR_ETM_ANALYSIS_FAILED:
1808 command_print(cmd_ctx, "further analysis failed (corrupted trace data or just end of data");
1809 break;
1810 case ERROR_TRACE_INSTRUCTION_UNAVAILABLE:
1811 command_print(cmd_ctx, "no instruction for current address available, analysis aborted");
1812 break;
1813 case ERROR_TRACE_IMAGE_UNAVAILABLE:
1814 command_print(cmd_ctx, "no image available for trace analysis");
1815 break;
1816 default:
1817 command_print(cmd_ctx, "unknown error: %i", retval);
1818 }
1819 }
1820
1821 return ERROR_OK;
1822 }
1823
1824 int etm_register_commands(struct command_context_s *cmd_ctx)
1825 {
1826 etm_cmd = register_command(cmd_ctx, NULL, "etm", NULL, COMMAND_ANY, "Embedded Trace Macrocell");
1827
1828 register_command(cmd_ctx, etm_cmd, "config", handle_etm_config_command, COMMAND_CONFIG, NULL);
1829
1830 return ERROR_OK;
1831 }
1832
1833 int etm_register_user_commands(struct command_context_s *cmd_ctx)
1834 {
1835 register_command(cmd_ctx, etm_cmd, "tracemode", handle_etm_tracemode_command,
1836 COMMAND_EXEC, "configure trace mode <none|data|address|all> <context id bits> <cycle accurate> <branch output");
1837
1838 register_command(cmd_ctx, etm_cmd, "info", handle_etm_info_command,
1839 COMMAND_EXEC, "display info about the current target's ETM");
1840
1841 register_command(cmd_ctx, etm_cmd, "trigger_percent <percent>", handle_etm_trigger_percent_command,
1842 COMMAND_EXEC, "amount (<percent>) of trace buffer to be filled after the trigger occured");
1843 register_command(cmd_ctx, etm_cmd, "status", handle_etm_status_command,
1844 COMMAND_EXEC, "display current target's ETM status");
1845 register_command(cmd_ctx, etm_cmd, "start", handle_etm_start_command,
1846 COMMAND_EXEC, "start ETM trace collection");
1847 register_command(cmd_ctx, etm_cmd, "stop", handle_etm_stop_command,
1848 COMMAND_EXEC, "stop ETM trace collection");
1849
1850 register_command(cmd_ctx, etm_cmd, "analyze", handle_etm_analyze_command,
1851 COMMAND_EXEC, "anaylze collected ETM trace");
1852
1853 register_command(cmd_ctx, etm_cmd, "image", handle_etm_image_command,
1854 COMMAND_EXEC, "load image from <file> [base address]");
1855
1856 register_command(cmd_ctx, etm_cmd, "dump", handle_etm_dump_command,
1857 COMMAND_EXEC, "dump captured trace data <file>");
1858 register_command(cmd_ctx, etm_cmd, "load", handle_etm_load_command,
1859 COMMAND_EXEC, "load trace data for analysis <file>");
1860
1861 return ERROR_OK;
1862 }
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