1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
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. *
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. *
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 ***************************************************************************/
28 #include "arm_disassembler.h"
33 * ARM "Embedded Trace Macrocell" (ETM) support -- direct JTAG access.
35 * ETM modules collect instruction and/or data trace information, compress
36 * it, and transfer it to a debugging host through either a (buffered) trace
37 * port (often a 38-pin Mictor connector) or an Embedded Trace Buffer (ETB).
39 * There are several generations of these modules. Original versions have
40 * JTAG access through a dedicated scan chain. Recent versions have added
41 * access via coprocessor instructions, memory addressing, and the ARM Debug
42 * Interface v5 (ADIv5); and phased out direct JTAG access.
44 * This code supports up to the ETMv1.3 architecture, as seen in ETM9 and
45 * most common ARM9 systems. Note: "CoreSight ETM9" implements ETMv3.2,
46 * implying non-JTAG connectivity options.
48 * Relevant documentation includes:
49 * ARM DDI 0157G ... ETM9 (r2p2) Technical Reference Manual
50 * ARM DDI 0315B ... CoreSight ETM9 (r0p1) Technical Reference Manual
51 * ARM IHI 0014O ... Embedded Trace Macrocell, Architecture Specification
62 uint8_t size
; /* low-N of 32 bits */
63 uint8_t mode
; /* RO, WO, RW */
64 uint8_t bcd_vers
; /* 1.0, 2.0, etc */
69 * Registers 0..0x7f are JTAG-addressable using scanchain 6.
70 * (Or on some processors, through coprocessor operations.)
71 * Newer versions of ETM make some W/O registers R/W, and
72 * provide definitions for some previously-unused bits.
75 /* core registers used to version/configure the ETM */
76 static const struct etm_reg_info etm_core
[] = {
77 /* NOTE: we "know" the order here ... */
78 { ETM_CONFIG
, 32, RO
, 0x10, "ETM_config", },
79 { ETM_ID
, 32, RO
, 0x20, "ETM_id", },
82 /* basic registers that are always there given the right ETM version */
83 static const struct etm_reg_info etm_basic
[] = {
84 /* ETM Trace Registers */
85 { ETM_CTRL
, 32, RW
, 0x10, "ETM_ctrl", },
86 { ETM_TRIG_EVENT
, 17, WO
, 0x10, "ETM_trig_event", },
87 { ETM_ASIC_CTRL
, 8, WO
, 0x10, "ETM_asic_ctrl", },
88 { ETM_STATUS
, 3, RO
, 0x11, "ETM_status", },
89 { ETM_SYS_CONFIG
, 9, RO
, 0x12, "ETM_sys_config", },
91 /* TraceEnable configuration */
92 { ETM_TRACE_RESOURCE_CTRL
, 32, WO
, 0x12, "ETM_trace_resource_ctrl", },
93 { ETM_TRACE_EN_CTRL2
, 16, WO
, 0x12, "ETM_trace_en_ctrl2", },
94 { ETM_TRACE_EN_EVENT
, 17, WO
, 0x10, "ETM_trace_en_event", },
95 { ETM_TRACE_EN_CTRL1
, 26, WO
, 0x10, "ETM_trace_en_ctrl1", },
97 /* ViewData configuration (data trace) */
98 { ETM_VIEWDATA_EVENT
, 17, WO
, 0x10, "ETM_viewdata_event", },
99 { ETM_VIEWDATA_CTRL1
, 32, WO
, 0x10, "ETM_viewdata_ctrl1", },
100 { ETM_VIEWDATA_CTRL2
, 32, WO
, 0x10, "ETM_viewdata_ctrl2", },
101 { ETM_VIEWDATA_CTRL3
, 17, WO
, 0x10, "ETM_viewdata_ctrl3", },
103 /* REVISIT exclude VIEWDATA_CTRL2 when it's not there */
105 { 0x78, 12, WO
, 0x20, "ETM_sync_freq", },
106 { 0x7a, 22, RO
, 0x31, "ETM_config_code_ext", },
107 { 0x7b, 32, WO
, 0x31, "ETM_ext_input_select", },
108 { 0x7c, 32, WO
, 0x34, "ETM_trace_start_stop", },
109 { 0x7d, 8, WO
, 0x34, "ETM_behavior_control", },
112 static const struct etm_reg_info etm_fifofull
[] = {
113 /* FIFOFULL configuration */
114 { ETM_FIFOFULL_REGION
, 25, WO
, 0x10, "ETM_fifofull_region", },
115 { ETM_FIFOFULL_LEVEL
, 8, WO
, 0x10, "ETM_fifofull_level", },
118 static const struct etm_reg_info etm_addr_comp
[] = {
119 /* Address comparator register pairs */
120 #define ADDR_COMPARATOR(i) \
121 { ETM_ADDR_COMPARATOR_VALUE + (i) - 1, 32, WO, 0x10, \
122 "ETM_addr_" #i "_comparator_value", }, \
123 { ETM_ADDR_ACCESS_TYPE + (i) - 1, 7, WO, 0x10, \
124 "ETM_addr_" #i "_access_type", }
142 #undef ADDR_COMPARATOR
145 static const struct etm_reg_info etm_data_comp
[] = {
146 /* Data Value Comparators (NOTE: odd addresses are reserved) */
147 #define DATA_COMPARATOR(i) \
148 { ETM_DATA_COMPARATOR_VALUE + 2*(i) - 1, 32, WO, 0x10, \
149 "ETM_data_" #i "_comparator_value", }, \
150 { ETM_DATA_COMPARATOR_MASK + 2*(i) - 1, 32, WO, 0x10, \
151 "ETM_data_" #i "_comparator_mask", }
160 #undef DATA_COMPARATOR
163 static const struct etm_reg_info etm_counters
[] = {
164 #define ETM_COUNTER(i) \
165 { ETM_COUNTER_RELOAD_VALUE + (i) - 1, 16, WO, 0x10, \
166 "ETM_counter_" #i "_reload_value", }, \
167 { ETM_COUNTER_ENABLE + (i) - 1, 18, WO, 0x10, \
168 "ETM_counter_" #i "_enable", }, \
169 { ETM_COUNTER_RELOAD_EVENT + (i) - 1, 17, WO, 0x10, \
170 "ETM_counter_" #i "_reload_event", }, \
171 { ETM_COUNTER_VALUE + (i) - 1, 16, RO, 0x10, \
172 "ETM_counter_" #i "_value", }
180 static const struct etm_reg_info etm_sequencer
[] = {
182 { ETM_SEQUENCER_EVENT + (i), 17, WO, 0x10, \
183 "ETM_sequencer_event" #i, }
184 ETM_SEQ(0), /* 1->2 */
185 ETM_SEQ(1), /* 2->1 */
186 ETM_SEQ(2), /* 2->3 */
187 ETM_SEQ(3), /* 3->1 */
188 ETM_SEQ(4), /* 3->2 */
189 ETM_SEQ(5), /* 1->3 */
192 { ETM_SEQUENCER_STATE
, 2, RO
, 0x10, "ETM_sequencer_state", },
195 static const struct etm_reg_info etm_outputs
[] = {
196 #define ETM_OUTPUT(i) \
197 { ETM_EXTERNAL_OUTPUT + (i) - 1, 17, WO, 0x10, \
198 "ETM_external_output" #i, }
208 /* registers from 0x6c..0x7f were added after ETMv1.3 */
210 /* Context ID Comparators */
211 { 0x6c, 32, RO
, 0x20, "ETM_contextid_comparator_value1", }
212 { 0x6d, 32, RO
, 0x20, "ETM_contextid_comparator_value2", }
213 { 0x6e, 32, RO
, 0x20, "ETM_contextid_comparator_value3", }
214 { 0x6f, 32, RO
, 0x20, "ETM_contextid_comparator_mask", }
217 static int etm_get_reg(struct reg
*reg
);
218 static int etm_read_reg_w_check(struct reg
*reg
,
219 uint8_t* check_value
, uint8_t* check_mask
);
220 static int etm_register_user_commands(struct command_context
*cmd_ctx
);
221 static int etm_set_reg_w_exec(struct reg
*reg
, uint8_t *buf
);
222 static int etm_write_reg(struct reg
*reg
, uint32_t value
);
224 static const struct reg_arch_type etm_scan6_type
= {
226 .set
= etm_set_reg_w_exec
,
229 /* Look up register by ID ... most ETM instances only
230 * support a subset of the possible registers.
232 static struct reg
*etm_reg_lookup(struct etm_context
*etm_ctx
, unsigned id
)
234 struct reg_cache
*cache
= etm_ctx
->reg_cache
;
237 for (i
= 0; i
< cache
->num_regs
; i
++) {
238 struct etm_reg
*reg
= cache
->reg_list
[i
].arch_info
;
240 if (reg
->reg_info
->addr
== id
)
241 return &cache
->reg_list
[i
];
244 /* caller asking for nonexistent register is a bug! */
245 /* REVISIT say which of the N targets was involved */
246 LOG_ERROR("ETM: register 0x%02x not available", id
);
250 static void etm_reg_add(unsigned bcd_vers
, struct arm_jtag
*jtag_info
,
251 struct reg_cache
*cache
, struct etm_reg
*ereg
,
252 const struct etm_reg_info
*r
, unsigned nreg
)
254 struct reg
*reg
= cache
->reg_list
;
256 reg
+= cache
->num_regs
;
257 ereg
+= cache
->num_regs
;
259 /* add up to "nreg" registers from "r", if supported by this
260 * version of the ETM, to the specified cache.
262 for (; nreg
--; r
++) {
264 /* this ETM may be too old to have some registers */
265 if (r
->bcd_vers
> bcd_vers
)
270 reg
->value
= &ereg
->value
;
271 reg
->arch_info
= ereg
;
272 reg
->type
= &etm_scan6_type
;
277 ereg
->jtag_info
= jtag_info
;
282 struct reg_cache
*etm_build_reg_cache(struct target
*target
,
283 struct arm_jtag
*jtag_info
, struct etm_context
*etm_ctx
)
285 struct reg_cache
*reg_cache
= malloc(sizeof(struct reg_cache
));
286 struct reg
*reg_list
= NULL
;
287 struct etm_reg
*arch_info
= NULL
;
288 unsigned bcd_vers
, config
;
290 /* the actual registers are kept in two arrays */
291 reg_list
= calloc(128, sizeof(struct reg
));
292 arch_info
= calloc(128, sizeof(struct etm_reg
));
294 /* fill in values for the reg cache */
295 reg_cache
->name
= "etm registers";
296 reg_cache
->next
= NULL
;
297 reg_cache
->reg_list
= reg_list
;
298 reg_cache
->num_regs
= 0;
300 /* add ETM_CONFIG, then parse its values to see
301 * which other registers exist in this ETM
303 etm_reg_add(0x10, jtag_info
, reg_cache
, arch_info
,
306 etm_get_reg(reg_list
);
307 etm_ctx
->config
= buf_get_u32((void *)&arch_info
->value
, 0, 32);
308 config
= etm_ctx
->config
;
310 /* figure ETM version then add base registers */
311 if (config
& (1 << 31)) {
313 LOG_WARNING("ETMv2+ support is incomplete");
315 /* REVISIT more registers may exist; they may now be
316 * readable; more register bits have defined meanings;
317 * don't presume trace start/stop support is present;
318 * and include any context ID comparator registers.
320 etm_reg_add(0x20, jtag_info
, reg_cache
, arch_info
,
322 etm_get_reg(reg_list
+ 1);
323 etm_ctx
->id
= buf_get_u32(
324 (void *)&arch_info
[1].value
, 0, 32);
325 LOG_DEBUG("ETM ID: %08x", (unsigned) etm_ctx
->id
);
326 bcd_vers
= 0x10 + (((etm_ctx
->id
) >> 4) & 0xff);
329 switch (config
>> 28) {
346 LOG_WARNING("Bad ETMv1 protocol %d", config
>> 28);
350 etm_ctx
->bcd_vers
= bcd_vers
;
351 LOG_INFO("ETM v%d.%d", bcd_vers
>> 4, bcd_vers
& 0xf);
353 etm_reg_add(bcd_vers
, jtag_info
, reg_cache
, arch_info
,
354 etm_basic
, ARRAY_SIZE(etm_basic
));
356 /* address and data comparators; counters; outputs */
357 etm_reg_add(bcd_vers
, jtag_info
, reg_cache
, arch_info
,
358 etm_addr_comp
, 4 * (0x0f & (config
>> 0)));
359 etm_reg_add(bcd_vers
, jtag_info
, reg_cache
, arch_info
,
360 etm_data_comp
, 2 * (0x0f & (config
>> 4)));
361 etm_reg_add(bcd_vers
, jtag_info
, reg_cache
, arch_info
,
362 etm_counters
, 4 * (0x07 & (config
>> 13)));
363 etm_reg_add(bcd_vers
, jtag_info
, reg_cache
, arch_info
,
364 etm_outputs
, (0x07 & (config
>> 20)));
366 /* FIFOFULL presence is optional
367 * REVISIT for ETMv1.2 and later, don't bother adding this
368 * unless ETM_SYS_CONFIG says it's also *supported* ...
370 if (config
& (1 << 23))
371 etm_reg_add(bcd_vers
, jtag_info
, reg_cache
, arch_info
,
372 etm_fifofull
, ARRAY_SIZE(etm_fifofull
));
374 /* sequencer is optional (for state-dependant triggering) */
375 if (config
& (1 << 16))
376 etm_reg_add(bcd_vers
, jtag_info
, reg_cache
, arch_info
,
377 etm_sequencer
, ARRAY_SIZE(etm_sequencer
));
379 /* REVISIT could realloc and likely save half the memory
380 * in the two chunks we allocated...
383 /* the ETM might have an ETB connected */
384 if (strcmp(etm_ctx
->capture_driver
->name
, "etb") == 0)
386 struct etb
*etb
= etm_ctx
->capture_driver_priv
;
390 LOG_ERROR("etb selected as etm capture driver, but no ETB configured");
394 reg_cache
->next
= etb_build_reg_cache(etb
);
396 etb
->reg_cache
= reg_cache
->next
;
399 etm_ctx
->reg_cache
= reg_cache
;
409 static int etm_read_reg(struct reg
*reg
)
411 return etm_read_reg_w_check(reg
, NULL
, NULL
);
414 static int etm_store_reg(struct reg
*reg
)
416 return etm_write_reg(reg
, buf_get_u32(reg
->value
, 0, reg
->size
));
419 int etm_setup(struct target
*target
)
422 uint32_t etm_ctrl_value
;
423 struct arm
*arm
= target_to_arm(target
);
424 struct etm_context
*etm_ctx
= arm
->etm
;
425 struct reg
*etm_ctrl_reg
;
427 etm_ctrl_reg
= etm_reg_lookup(etm_ctx
, ETM_CTRL
);
431 /* initialize some ETM control register settings */
432 etm_get_reg(etm_ctrl_reg
);
433 etm_ctrl_value
= buf_get_u32(etm_ctrl_reg
->value
, 0, etm_ctrl_reg
->size
);
435 /* clear the ETM powerdown bit (0) */
436 etm_ctrl_value
&= ~0x1;
438 /* configure port width (21,6:4), mode (13,17:16) and
439 * for older modules clocking (13)
441 etm_ctrl_value
= (etm_ctrl_value
442 & ~ETM_PORT_WIDTH_MASK
443 & ~ETM_PORT_MODE_MASK
444 & ~ETM_PORT_CLOCK_MASK
)
447 buf_set_u32(etm_ctrl_reg
->value
, 0, etm_ctrl_reg
->size
, etm_ctrl_value
);
448 etm_store_reg(etm_ctrl_reg
);
450 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
453 /* REVISIT for ETMv3.0 and later, read ETM_sys_config to
454 * verify that those width and mode settings are OK ...
457 if ((retval
= etm_ctx
->capture_driver
->init(etm_ctx
)) != ERROR_OK
)
459 LOG_ERROR("ETM capture driver initialization failed");
465 static int etm_get_reg(struct reg
*reg
)
469 if ((retval
= etm_read_reg(reg
)) != ERROR_OK
)
471 LOG_ERROR("BUG: error scheduling etm register read");
475 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
477 LOG_ERROR("register read failed");
484 static int etm_read_reg_w_check(struct reg
*reg
,
485 uint8_t* check_value
, uint8_t* check_mask
)
487 struct etm_reg
*etm_reg
= reg
->arch_info
;
488 const struct etm_reg_info
*r
= etm_reg
->reg_info
;
489 uint8_t reg_addr
= r
->addr
& 0x7f;
490 struct scan_field fields
[3];
492 if (etm_reg
->reg_info
->mode
== WO
) {
493 LOG_ERROR("BUG: can't read write-only register %s", r
->name
);
494 return ERROR_INVALID_ARGUMENTS
;
497 LOG_DEBUG("%s (%u)", r
->name
, reg_addr
);
499 jtag_set_end_state(TAP_IDLE
);
500 arm_jtag_scann(etm_reg
->jtag_info
, 0x6);
501 arm_jtag_set_instr(etm_reg
->jtag_info
, etm_reg
->jtag_info
->intest_instr
, NULL
);
503 fields
[0].tap
= etm_reg
->jtag_info
->tap
;
504 fields
[0].num_bits
= 32;
505 fields
[0].out_value
= reg
->value
;
506 fields
[0].in_value
= NULL
;
507 fields
[0].check_value
= NULL
;
508 fields
[0].check_mask
= NULL
;
510 fields
[1].tap
= etm_reg
->jtag_info
->tap
;
511 fields
[1].num_bits
= 7;
512 fields
[1].out_value
= malloc(1);
513 buf_set_u32(fields
[1].out_value
, 0, 7, reg_addr
);
514 fields
[1].in_value
= NULL
;
515 fields
[1].check_value
= NULL
;
516 fields
[1].check_mask
= NULL
;
518 fields
[2].tap
= etm_reg
->jtag_info
->tap
;
519 fields
[2].num_bits
= 1;
520 fields
[2].out_value
= malloc(1);
521 buf_set_u32(fields
[2].out_value
, 0, 1, 0);
522 fields
[2].in_value
= NULL
;
523 fields
[2].check_value
= NULL
;
524 fields
[2].check_mask
= NULL
;
526 jtag_add_dr_scan(3, fields
, jtag_get_end_state());
528 fields
[0].in_value
= reg
->value
;
529 fields
[0].check_value
= check_value
;
530 fields
[0].check_mask
= check_mask
;
532 jtag_add_dr_scan_check(3, fields
, jtag_get_end_state());
534 free(fields
[1].out_value
);
535 free(fields
[2].out_value
);
540 static int etm_set_reg(struct reg
*reg
, uint32_t value
)
544 if ((retval
= etm_write_reg(reg
, value
)) != ERROR_OK
)
546 LOG_ERROR("BUG: error scheduling etm register write");
550 buf_set_u32(reg
->value
, 0, reg
->size
, value
);
557 static int etm_set_reg_w_exec(struct reg
*reg
, uint8_t *buf
)
561 etm_set_reg(reg
, buf_get_u32(buf
, 0, reg
->size
));
563 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
565 LOG_ERROR("register write failed");
571 static int etm_write_reg(struct reg
*reg
, uint32_t value
)
573 struct etm_reg
*etm_reg
= reg
->arch_info
;
574 const struct etm_reg_info
*r
= etm_reg
->reg_info
;
575 uint8_t reg_addr
= r
->addr
& 0x7f;
576 struct scan_field fields
[3];
578 if (etm_reg
->reg_info
->mode
== RO
) {
579 LOG_ERROR("BUG: can't write read--only register %s", r
->name
);
580 return ERROR_INVALID_ARGUMENTS
;
583 LOG_DEBUG("%s (%u): 0x%8.8" PRIx32
"", r
->name
, reg_addr
, value
);
585 jtag_set_end_state(TAP_IDLE
);
586 arm_jtag_scann(etm_reg
->jtag_info
, 0x6);
587 arm_jtag_set_instr(etm_reg
->jtag_info
, etm_reg
->jtag_info
->intest_instr
, NULL
);
589 fields
[0].tap
= etm_reg
->jtag_info
->tap
;
590 fields
[0].num_bits
= 32;
592 fields
[0].out_value
= tmp1
;
593 buf_set_u32(fields
[0].out_value
, 0, 32, value
);
594 fields
[0].in_value
= NULL
;
596 fields
[1].tap
= etm_reg
->jtag_info
->tap
;
597 fields
[1].num_bits
= 7;
599 fields
[1].out_value
= &tmp2
;
600 buf_set_u32(fields
[1].out_value
, 0, 7, reg_addr
);
601 fields
[1].in_value
= NULL
;
603 fields
[2].tap
= etm_reg
->jtag_info
->tap
;
604 fields
[2].num_bits
= 1;
606 fields
[2].out_value
= &tmp3
;
607 buf_set_u32(fields
[2].out_value
, 0, 1, 1);
608 fields
[2].in_value
= NULL
;
610 jtag_add_dr_scan(3, fields
, jtag_get_end_state());
616 /* ETM trace analysis functionality
619 extern struct etm_capture_driver etm_dummy_capture_driver
;
620 #if BUILD_OOCD_TRACE == 1
621 extern struct etm_capture_driver oocd_trace_capture_driver
;
624 static struct etm_capture_driver
*etm_capture_drivers
[] =
627 &etm_dummy_capture_driver
,
628 #if BUILD_OOCD_TRACE == 1
629 &oocd_trace_capture_driver
,
634 static int etm_read_instruction(struct etm_context
*ctx
, struct arm_instruction
*instruction
)
643 return ERROR_TRACE_IMAGE_UNAVAILABLE
;
645 /* search for the section the current instruction belongs to */
646 for (i
= 0; i
< ctx
->image
->num_sections
; i
++)
648 if ((ctx
->image
->sections
[i
].base_address
<= ctx
->current_pc
) &&
649 (ctx
->image
->sections
[i
].base_address
+ ctx
->image
->sections
[i
].size
> ctx
->current_pc
))
658 /* current instruction couldn't be found in the image */
659 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE
;
662 if (ctx
->core_state
== ARMV4_5_STATE_ARM
)
665 if ((retval
= image_read_section(ctx
->image
, section
,
666 ctx
->current_pc
- ctx
->image
->sections
[section
].base_address
,
667 4, buf
, &size_read
)) != ERROR_OK
)
669 LOG_ERROR("error while reading instruction: %i", retval
);
670 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE
;
672 opcode
= target_buffer_get_u32(ctx
->target
, buf
);
673 arm_evaluate_opcode(opcode
, ctx
->current_pc
, instruction
);
675 else if (ctx
->core_state
== ARMV4_5_STATE_THUMB
)
678 if ((retval
= image_read_section(ctx
->image
, section
,
679 ctx
->current_pc
- ctx
->image
->sections
[section
].base_address
,
680 2, buf
, &size_read
)) != ERROR_OK
)
682 LOG_ERROR("error while reading instruction: %i", retval
);
683 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE
;
685 opcode
= target_buffer_get_u16(ctx
->target
, buf
);
686 thumb_evaluate_opcode(opcode
, ctx
->current_pc
, instruction
);
688 else if (ctx
->core_state
== ARMV4_5_STATE_JAZELLE
)
690 LOG_ERROR("BUG: tracing of jazelle code not supported");
695 LOG_ERROR("BUG: unknown core state encountered");
702 static int etmv1_next_packet(struct etm_context
*ctx
, uint8_t *packet
, int apo
)
704 while (ctx
->data_index
< ctx
->trace_depth
)
706 /* if the caller specified an address packet offset, skip until the
707 * we reach the n-th cycle marked with tracesync */
710 if (ctx
->trace_data
[ctx
->data_index
].flags
& ETMV1_TRACESYNC_CYCLE
)
721 /* no tracedata output during a TD cycle
722 * or in a trigger cycle */
723 if ((ctx
->trace_data
[ctx
->data_index
].pipestat
== STAT_TD
)
724 || (ctx
->trace_data
[ctx
->data_index
].flags
& ETMV1_TRIGGER_CYCLE
))
731 if ((ctx
->portmode
& ETM_PORT_WIDTH_MASK
) == ETM_PORT_16BIT
)
733 if (ctx
->data_half
== 0)
735 *packet
= ctx
->trace_data
[ctx
->data_index
].packet
& 0xff;
740 *packet
= (ctx
->trace_data
[ctx
->data_index
].packet
& 0xff00) >> 8;
745 else if ((ctx
->portmode
& ETM_PORT_WIDTH_MASK
) == ETM_PORT_8BIT
)
747 *packet
= ctx
->trace_data
[ctx
->data_index
].packet
& 0xff;
752 /* on a 4-bit port, a packet will be output during two consecutive cycles */
753 if (ctx
->data_index
> (ctx
->trace_depth
- 2))
756 *packet
= ctx
->trace_data
[ctx
->data_index
].packet
& 0xf;
757 *packet
|= (ctx
->trace_data
[ctx
->data_index
+ 1].packet
& 0xf) << 4;
758 ctx
->data_index
+= 2;
767 static int etmv1_branch_address(struct etm_context
*ctx
)
775 /* quit analysis if less than two cycles are left in the trace
776 * because we can't extract the APO */
777 if (ctx
->data_index
> (ctx
->trace_depth
- 2))
780 /* a BE could be output during an APO cycle, skip the current
781 * and continue with the new one */
782 if (ctx
->trace_data
[ctx
->pipe_index
+ 1].pipestat
& 0x4)
784 if (ctx
->trace_data
[ctx
->pipe_index
+ 2].pipestat
& 0x4)
787 /* address packet offset encoded in the next two cycles' pipestat bits */
788 apo
= ctx
->trace_data
[ctx
->pipe_index
+ 1].pipestat
& 0x3;
789 apo
|= (ctx
->trace_data
[ctx
->pipe_index
+ 2].pipestat
& 0x3) << 2;
791 /* count number of tracesync cycles between current pipe_index and data_index
792 * i.e. the number of tracesyncs that data_index already passed by
793 * to subtract them from the APO */
794 for (i
= ctx
->pipe_index
; i
< ctx
->data_index
; i
++)
796 if (ctx
->trace_data
[ctx
->pipe_index
+ 1].pipestat
& ETMV1_TRACESYNC_CYCLE
)
800 /* extract up to four 7-bit packets */
802 if ((retval
= etmv1_next_packet(ctx
, &packet
, (shift
== 0) ? apo
+ 1 : 0)) != 0)
804 ctx
->last_branch
&= ~(0x7f << shift
);
805 ctx
->last_branch
|= (packet
& 0x7f) << shift
;
807 } while ((packet
& 0x80) && (shift
< 28));
809 /* one last packet holding 4 bits of the address, plus the branch reason code */
810 if ((shift
== 28) && (packet
& 0x80))
812 if ((retval
= etmv1_next_packet(ctx
, &packet
, 0)) != 0)
814 ctx
->last_branch
&= 0x0fffffff;
815 ctx
->last_branch
|= (packet
& 0x0f) << 28;
816 ctx
->last_branch_reason
= (packet
& 0x70) >> 4;
821 ctx
->last_branch_reason
= 0;
829 /* if a full address was output, we might have branched into Jazelle state */
830 if ((shift
== 32) && (packet
& 0x80))
832 ctx
->core_state
= ARMV4_5_STATE_JAZELLE
;
836 /* if we didn't branch into Jazelle state, the current processor state is
837 * encoded in bit 0 of the branch target address */
838 if (ctx
->last_branch
& 0x1)
840 ctx
->core_state
= ARMV4_5_STATE_THUMB
;
841 ctx
->last_branch
&= ~0x1;
845 ctx
->core_state
= ARMV4_5_STATE_ARM
;
846 ctx
->last_branch
&= ~0x3;
853 static int etmv1_data(struct etm_context
*ctx
, int size
, uint32_t *data
)
859 for (j
= 0; j
< size
; j
++)
861 if ((retval
= etmv1_next_packet(ctx
, &buf
[j
], 0)) != 0)
867 LOG_ERROR("TODO: add support for 64-bit values");
871 *data
= target_buffer_get_u32(ctx
->target
, buf
);
873 *data
= target_buffer_get_u16(ctx
->target
, buf
);
882 static int etmv1_analyze_trace(struct etm_context
*ctx
, struct command_context
*cmd_ctx
)
885 struct arm_instruction instruction
;
887 /* read the trace data if it wasn't read already */
888 if (ctx
->trace_depth
== 0)
889 ctx
->capture_driver
->read_trace(ctx
);
891 /* start at the beginning of the captured trace */
896 /* neither the PC nor the data pointer are valid */
900 while (ctx
->pipe_index
< ctx
->trace_depth
)
902 uint8_t pipestat
= ctx
->trace_data
[ctx
->pipe_index
].pipestat
;
903 uint32_t next_pc
= ctx
->current_pc
;
904 uint32_t old_data_index
= ctx
->data_index
;
905 uint32_t old_data_half
= ctx
->data_half
;
906 uint32_t old_index
= ctx
->pipe_index
;
907 uint32_t last_instruction
= ctx
->last_instruction
;
909 int current_pc_ok
= ctx
->pc_ok
;
911 if (ctx
->trace_data
[ctx
->pipe_index
].flags
& ETMV1_TRIGGER_CYCLE
)
913 command_print(cmd_ctx
, "--- trigger ---");
916 /* instructions execute in IE/D or BE/D cycles */
917 if ((pipestat
== STAT_IE
) || (pipestat
== STAT_ID
))
918 ctx
->last_instruction
= ctx
->pipe_index
;
920 /* if we don't have a valid pc skip until we reach an indirect branch */
921 if ((!ctx
->pc_ok
) && (pipestat
!= STAT_BE
))
927 /* any indirect branch could have interrupted instruction flow
928 * - the branch reason code could indicate a trace discontinuity
929 * - a branch to the exception vectors indicates an exception
931 if ((pipestat
== STAT_BE
) || (pipestat
== STAT_BD
))
933 /* backup current data index, to be able to consume the branch address
934 * before examining data address and values
936 old_data_index
= ctx
->data_index
;
937 old_data_half
= ctx
->data_half
;
939 ctx
->last_instruction
= ctx
->pipe_index
;
941 if ((retval
= etmv1_branch_address(ctx
)) != 0)
943 /* negative return value from etmv1_branch_address means we ran out of packets,
944 * quit analysing the trace */
948 /* a positive return values means the current branch was abandoned,
949 * and a new branch was encountered in cycle ctx->pipe_index + retval;
951 LOG_WARNING("abandoned branch encountered, correctnes of analysis uncertain");
952 ctx
->pipe_index
+= retval
;
956 /* skip over APO cycles */
957 ctx
->pipe_index
+= 2;
959 switch (ctx
->last_branch_reason
)
961 case 0x0: /* normal PC change */
962 next_pc
= ctx
->last_branch
;
964 case 0x1: /* tracing enabled */
965 command_print(cmd_ctx
, "--- tracing enabled at 0x%8.8" PRIx32
" ---", ctx
->last_branch
);
966 ctx
->current_pc
= ctx
->last_branch
;
970 case 0x2: /* trace restarted after FIFO overflow */
971 command_print(cmd_ctx
, "--- trace restarted after FIFO overflow at 0x%8.8" PRIx32
" ---", ctx
->last_branch
);
972 ctx
->current_pc
= ctx
->last_branch
;
976 case 0x3: /* exit from debug state */
977 command_print(cmd_ctx
, "--- exit from debug state at 0x%8.8" PRIx32
" ---", ctx
->last_branch
);
978 ctx
->current_pc
= ctx
->last_branch
;
982 case 0x4: /* periodic synchronization point */
983 next_pc
= ctx
->last_branch
;
984 /* if we had no valid PC prior to this synchronization point,
985 * we have to move on with the next trace cycle
989 command_print(cmd_ctx
, "--- periodic synchronization point at 0x%8.8" PRIx32
" ---", next_pc
);
990 ctx
->current_pc
= next_pc
;
995 default: /* reserved */
996 LOG_ERROR("BUG: branch reason code 0x%" PRIx32
" is reserved", ctx
->last_branch_reason
);
1000 /* if we got here the branch was a normal PC change
1001 * (or a periodic synchronization point, which means the same for that matter)
1002 * if we didn't accquire a complete PC continue with the next cycle
1007 /* indirect branch to the exception vector means an exception occured */
1008 if ((ctx
->last_branch
<= 0x20)
1009 || ((ctx
->last_branch
>= 0xffff0000) && (ctx
->last_branch
<= 0xffff0020)))
1011 if ((ctx
->last_branch
& 0xff) == 0x10)
1013 command_print(cmd_ctx
, "data abort");
1017 command_print(cmd_ctx
, "exception vector 0x%2.2" PRIx32
"", ctx
->last_branch
);
1018 ctx
->current_pc
= ctx
->last_branch
;
1025 /* an instruction was executed (or not, depending on the condition flags)
1026 * retrieve it from the image for displaying */
1027 if (ctx
->pc_ok
&& (pipestat
!= STAT_WT
) && (pipestat
!= STAT_TD
) &&
1028 !(((pipestat
== STAT_BE
) || (pipestat
== STAT_BD
)) &&
1029 ((ctx
->last_branch_reason
!= 0x0) && (ctx
->last_branch_reason
!= 0x4))))
1031 if ((retval
= etm_read_instruction(ctx
, &instruction
)) != ERROR_OK
)
1033 /* can't continue tracing with no image available */
1034 if (retval
== ERROR_TRACE_IMAGE_UNAVAILABLE
)
1038 else if (retval
== ERROR_TRACE_INSTRUCTION_UNAVAILABLE
)
1040 /* TODO: handle incomplete images
1041 * for now we just quit the analsysis*/
1046 cycles
= old_index
- last_instruction
;
1049 if ((pipestat
== STAT_ID
) || (pipestat
== STAT_BD
))
1051 uint32_t new_data_index
= ctx
->data_index
;
1052 uint32_t new_data_half
= ctx
->data_half
;
1054 /* in case of a branch with data, the branch target address was consumed before
1055 * we temporarily go back to the saved data index */
1056 if (pipestat
== STAT_BD
)
1058 ctx
->data_index
= old_data_index
;
1059 ctx
->data_half
= old_data_half
;
1062 if (ctx
->tracemode
& ETMV1_TRACE_ADDR
)
1068 if ((retval
= etmv1_next_packet(ctx
, &packet
, 0)) != 0)
1069 return ERROR_ETM_ANALYSIS_FAILED
;
1070 ctx
->last_ptr
&= ~(0x7f << shift
);
1071 ctx
->last_ptr
|= (packet
& 0x7f) << shift
;
1073 } while ((packet
& 0x80) && (shift
< 32));
1080 command_print(cmd_ctx
, "address: 0x%8.8" PRIx32
"", ctx
->last_ptr
);
1084 if (ctx
->tracemode
& ETMV1_TRACE_DATA
)
1086 if ((instruction
.type
== ARM_LDM
) || (instruction
.type
== ARM_STM
))
1089 for (i
= 0; i
< 16; i
++)
1091 if (instruction
.info
.load_store_multiple
.register_list
& (1 << i
))
1094 if (etmv1_data(ctx
, 4, &data
) != 0)
1095 return ERROR_ETM_ANALYSIS_FAILED
;
1096 command_print(cmd_ctx
, "data: 0x%8.8" PRIx32
"", data
);
1100 else if ((instruction
.type
>= ARM_LDR
) && (instruction
.type
<= ARM_STRH
))
1103 if (etmv1_data(ctx
, arm_access_size(&instruction
), &data
) != 0)
1104 return ERROR_ETM_ANALYSIS_FAILED
;
1105 command_print(cmd_ctx
, "data: 0x%8.8" PRIx32
"", data
);
1109 /* restore data index after consuming BD address and data */
1110 if (pipestat
== STAT_BD
)
1112 ctx
->data_index
= new_data_index
;
1113 ctx
->data_half
= new_data_half
;
1118 if ((pipestat
== STAT_IE
) || (pipestat
== STAT_ID
))
1120 if (((instruction
.type
== ARM_B
) ||
1121 (instruction
.type
== ARM_BL
) ||
1122 (instruction
.type
== ARM_BLX
)) &&
1123 (instruction
.info
.b_bl_bx_blx
.target_address
!= 0xffffffff))
1125 next_pc
= instruction
.info
.b_bl_bx_blx
.target_address
;
1129 next_pc
+= (ctx
->core_state
== ARMV4_5_STATE_ARM
) ? 4 : 2;
1132 else if (pipestat
== STAT_IN
)
1134 next_pc
+= (ctx
->core_state
== ARMV4_5_STATE_ARM
) ? 4 : 2;
1137 if ((pipestat
!= STAT_TD
) && (pipestat
!= STAT_WT
))
1139 char cycles_text
[32] = "";
1141 /* if the trace was captured with cycle accurate tracing enabled,
1142 * output the number of cycles since the last executed instruction
1144 if (ctx
->tracemode
& ETMV1_CYCLE_ACCURATE
)
1146 snprintf(cycles_text
, 32, " (%i %s)",
1148 (cycles
== 1) ? "cycle" : "cycles");
1151 command_print(cmd_ctx
, "%s%s%s",
1153 (pipestat
== STAT_IN
) ? " (not executed)" : "",
1156 ctx
->current_pc
= next_pc
;
1158 /* packets for an instruction don't start on or before the preceding
1159 * functional pipestat (i.e. other than WT or TD)
1161 if (ctx
->data_index
<= ctx
->pipe_index
)
1163 ctx
->data_index
= ctx
->pipe_index
+ 1;
1168 ctx
->pipe_index
+= 1;
1174 static COMMAND_HELPER(handle_etm_tracemode_command_update
,
1175 etmv1_tracemode_t
*mode
)
1177 etmv1_tracemode_t tracemode
;
1179 /* what parts of data access are traced? */
1180 if (strcmp(CMD_ARGV
[0], "none") == 0)
1181 tracemode
= ETMV1_TRACE_NONE
;
1182 else if (strcmp(CMD_ARGV
[0], "data") == 0)
1183 tracemode
= ETMV1_TRACE_DATA
;
1184 else if (strcmp(CMD_ARGV
[0], "address") == 0)
1185 tracemode
= ETMV1_TRACE_ADDR
;
1186 else if (strcmp(CMD_ARGV
[0], "all") == 0)
1187 tracemode
= ETMV1_TRACE_DATA
| ETMV1_TRACE_ADDR
;
1190 command_print(CMD_CTX
, "invalid option '%s'", CMD_ARGV
[0]);
1191 return ERROR_INVALID_ARGUMENTS
;
1195 COMMAND_PARSE_NUMBER(u8
, CMD_ARGV
[1], context_id
);
1199 tracemode
|= ETMV1_CONTEXTID_NONE
;
1202 tracemode
|= ETMV1_CONTEXTID_8
;
1205 tracemode
|= ETMV1_CONTEXTID_16
;
1208 tracemode
|= ETMV1_CONTEXTID_32
;
1211 command_print(CMD_CTX
, "invalid option '%s'", CMD_ARGV
[1]);
1212 return ERROR_INVALID_ARGUMENTS
;
1215 bool etmv1_cycle_accurate
;
1216 COMMAND_PARSE_ENABLE(CMD_ARGV
[2], etmv1_cycle_accurate
);
1217 if (etmv1_cycle_accurate
)
1218 tracemode
|= ETMV1_CYCLE_ACCURATE
;
1220 bool etmv1_branch_output
;
1221 COMMAND_PARSE_ENABLE(CMD_ARGV
[3], etmv1_branch_output
);
1222 tracemode
|= ETMV1_BRANCH_OUTPUT
;
1225 * - CPRT tracing (coprocessor register transfers)
1226 * - debug request (causes debug entry on trigger)
1227 * - stall on FIFOFULL (preventing tracedata lossage)
1234 COMMAND_HANDLER(handle_etm_tracemode_command
)
1236 struct target
*target
= get_current_target(CMD_CTX
);
1237 struct arm
*arm
= target_to_arm(target
);
1238 struct etm_context
*etm
;
1241 command_print(CMD_CTX
, "ETM: current target isn't an ARM");
1247 command_print(CMD_CTX
, "current target doesn't have an ETM configured");
1251 etmv1_tracemode_t tracemode
= etm
->tracemode
;
1258 CALL_COMMAND_HANDLER(handle_etm_tracemode_command_update
, &tracemode
);
1261 command_print(CMD_CTX
, "usage: configure trace mode "
1262 "<none | data | address | all> "
1263 "<context id bits> <cycle accurate> <branch output>");
1268 * todo: fail if parameters were invalid for this hardware,
1269 * or couldn't be written; display actual hardware state...
1272 command_print(CMD_CTX
, "current tracemode configuration:");
1274 switch (tracemode
& ETMV1_TRACE_MASK
)
1276 case ETMV1_TRACE_NONE
:
1277 command_print(CMD_CTX
, "data tracing: none");
1279 case ETMV1_TRACE_DATA
:
1280 command_print(CMD_CTX
, "data tracing: data only");
1282 case ETMV1_TRACE_ADDR
:
1283 command_print(CMD_CTX
, "data tracing: address only");
1285 case ETMV1_TRACE_DATA
| ETMV1_TRACE_ADDR
:
1286 command_print(CMD_CTX
, "data tracing: address and data");
1290 switch (tracemode
& ETMV1_CONTEXTID_MASK
)
1292 case ETMV1_CONTEXTID_NONE
:
1293 command_print(CMD_CTX
, "contextid tracing: none");
1295 case ETMV1_CONTEXTID_8
:
1296 command_print(CMD_CTX
, "contextid tracing: 8 bit");
1298 case ETMV1_CONTEXTID_16
:
1299 command_print(CMD_CTX
, "contextid tracing: 16 bit");
1301 case ETMV1_CONTEXTID_32
:
1302 command_print(CMD_CTX
, "contextid tracing: 32 bit");
1306 if (tracemode
& ETMV1_CYCLE_ACCURATE
)
1308 command_print(CMD_CTX
, "cycle-accurate tracing enabled");
1312 command_print(CMD_CTX
, "cycle-accurate tracing disabled");
1315 if (tracemode
& ETMV1_BRANCH_OUTPUT
)
1317 command_print(CMD_CTX
, "full branch address output enabled");
1321 command_print(CMD_CTX
, "full branch address output disabled");
1324 /* only update ETM_CTRL register if tracemode changed */
1325 if (etm
->tracemode
!= tracemode
)
1327 struct reg
*etm_ctrl_reg
;
1329 etm_ctrl_reg
= etm_reg_lookup(etm
, ETM_CTRL
);
1333 etm_get_reg(etm_ctrl_reg
);
1335 buf_set_u32(etm_ctrl_reg
->value
, 2, 2, tracemode
& ETMV1_TRACE_MASK
);
1336 buf_set_u32(etm_ctrl_reg
->value
, 14, 2, (tracemode
& ETMV1_CONTEXTID_MASK
) >> 4);
1337 buf_set_u32(etm_ctrl_reg
->value
, 12, 1, (tracemode
& ETMV1_CYCLE_ACCURATE
) >> 8);
1338 buf_set_u32(etm_ctrl_reg
->value
, 8, 1, (tracemode
& ETMV1_BRANCH_OUTPUT
) >> 9);
1339 etm_store_reg(etm_ctrl_reg
);
1341 etm
->tracemode
= tracemode
;
1343 /* invalidate old trace data */
1344 etm
->capture_status
= TRACE_IDLE
;
1345 if (etm
->trace_depth
> 0)
1347 free(etm
->trace_data
);
1348 etm
->trace_data
= NULL
;
1350 etm
->trace_depth
= 0;
1356 COMMAND_HANDLER(handle_etm_config_command
)
1358 struct target
*target
;
1360 etm_portmode_t portmode
= 0x0;
1361 struct etm_context
*etm_ctx
;
1365 return ERROR_COMMAND_SYNTAX_ERROR
;
1367 target
= get_target(CMD_ARGV
[0]);
1370 LOG_ERROR("target '%s' not defined", CMD_ARGV
[0]);
1374 arm
= target_to_arm(target
);
1376 command_print(CMD_CTX
, "target '%s' is '%s'; not an ARM",
1377 target_name(target
),
1378 target_type_name(target
));
1382 /* FIXME for ETMv3.0 and above -- and we don't yet know what ETM
1383 * version we'll be using!! -- so we can't know how to validate
1384 * params yet. "etm config" should likely be *AFTER* hookup...
1386 * - Many more widths might be supported ... and we can easily
1387 * check whether our setting "took".
1389 * - The "clock" and "mode" bits are interpreted differently.
1390 * See ARM IHI 0014O table 2-17 for the old behavior, and
1391 * table 2-18 for the new. With ETB it's best to specify
1395 COMMAND_PARSE_NUMBER(u8
, CMD_ARGV
[1], port_width
);
1398 /* before ETMv3.0 */
1400 portmode
|= ETM_PORT_4BIT
;
1403 portmode
|= ETM_PORT_8BIT
;
1406 portmode
|= ETM_PORT_16BIT
;
1408 /* ETMv3.0 and later*/
1410 portmode
|= ETM_PORT_24BIT
;
1413 portmode
|= ETM_PORT_32BIT
;
1416 portmode
|= ETM_PORT_48BIT
;
1419 portmode
|= ETM_PORT_64BIT
;
1422 portmode
|= ETM_PORT_1BIT
;
1425 portmode
|= ETM_PORT_2BIT
;
1428 command_print(CMD_CTX
,
1429 "unsupported ETM port width '%s'", CMD_ARGV
[1]);
1433 if (strcmp("normal", CMD_ARGV
[2]) == 0)
1435 portmode
|= ETM_PORT_NORMAL
;
1437 else if (strcmp("multiplexed", CMD_ARGV
[2]) == 0)
1439 portmode
|= ETM_PORT_MUXED
;
1441 else if (strcmp("demultiplexed", CMD_ARGV
[2]) == 0)
1443 portmode
|= ETM_PORT_DEMUXED
;
1447 command_print(CMD_CTX
, "unsupported ETM port mode '%s', must be 'normal', 'multiplexed' or 'demultiplexed'", CMD_ARGV
[2]);
1451 if (strcmp("half", CMD_ARGV
[3]) == 0)
1453 portmode
|= ETM_PORT_HALF_CLOCK
;
1455 else if (strcmp("full", CMD_ARGV
[3]) == 0)
1457 portmode
|= ETM_PORT_FULL_CLOCK
;
1461 command_print(CMD_CTX
, "unsupported ETM port clocking '%s', must be 'full' or 'half'", CMD_ARGV
[3]);
1465 etm_ctx
= calloc(1, sizeof(struct etm_context
));
1467 LOG_DEBUG("out of memory");
1471 for (i
= 0; etm_capture_drivers
[i
]; i
++)
1473 if (strcmp(CMD_ARGV
[4], etm_capture_drivers
[i
]->name
) == 0)
1475 int retval
= register_commands(CMD_CTX
, NULL
,
1476 etm_capture_drivers
[i
]->commands
);
1477 if (ERROR_OK
!= retval
)
1483 etm_ctx
->capture_driver
= etm_capture_drivers
[i
];
1489 if (!etm_capture_drivers
[i
])
1491 /* no supported capture driver found, don't register an ETM */
1493 LOG_ERROR("trace capture driver '%s' not found", CMD_ARGV
[4]);
1497 etm_ctx
->target
= target
;
1498 etm_ctx
->trigger_percent
= 50;
1499 etm_ctx
->trace_data
= NULL
;
1500 etm_ctx
->portmode
= portmode
;
1501 etm_ctx
->core_state
= ARMV4_5_STATE_ARM
;
1505 return etm_register_user_commands(CMD_CTX
);
1508 COMMAND_HANDLER(handle_etm_info_command
)
1510 struct target
*target
;
1512 struct etm_context
*etm
;
1513 struct reg
*etm_sys_config_reg
;
1517 target
= get_current_target(CMD_CTX
);
1518 arm
= target_to_arm(target
);
1521 command_print(CMD_CTX
, "ETM: current target isn't an ARM");
1528 command_print(CMD_CTX
, "current target doesn't have an ETM configured");
1532 command_print(CMD_CTX
, "ETM v%d.%d",
1533 etm
->bcd_vers
>> 4, etm
->bcd_vers
& 0xf);
1534 command_print(CMD_CTX
, "pairs of address comparators: %i",
1535 (int) (etm
->config
>> 0) & 0x0f);
1536 command_print(CMD_CTX
, "data comparators: %i",
1537 (int) (etm
->config
>> 4) & 0x0f);
1538 command_print(CMD_CTX
, "memory map decoders: %i",
1539 (int) (etm
->config
>> 8) & 0x1f);
1540 command_print(CMD_CTX
, "number of counters: %i",
1541 (int) (etm
->config
>> 13) & 0x07);
1542 command_print(CMD_CTX
, "sequencer %spresent",
1543 (int) (etm
->config
& (1 << 16)) ? "" : "not ");
1544 command_print(CMD_CTX
, "number of ext. inputs: %i",
1545 (int) (etm
->config
>> 17) & 0x07);
1546 command_print(CMD_CTX
, "number of ext. outputs: %i",
1547 (int) (etm
->config
>> 20) & 0x07);
1548 command_print(CMD_CTX
, "FIFO full %spresent",
1549 (int) (etm
->config
& (1 << 23)) ? "" : "not ");
1550 if (etm
->bcd_vers
< 0x20)
1551 command_print(CMD_CTX
, "protocol version: %i",
1552 (int) (etm
->config
>> 28) & 0x07);
1554 command_print(CMD_CTX
,
1555 "coprocessor and memory access %ssupported",
1556 (etm
->config
& (1 << 26)) ? "" : "not ");
1557 command_print(CMD_CTX
, "trace start/stop %spresent",
1558 (etm
->config
& (1 << 26)) ? "" : "not ");
1559 command_print(CMD_CTX
, "number of context comparators: %i",
1560 (int) (etm
->config
>> 24) & 0x03);
1563 /* SYS_CONFIG isn't present before ETMv1.2 */
1564 etm_sys_config_reg
= etm_reg_lookup(etm
, ETM_SYS_CONFIG
);
1565 if (!etm_sys_config_reg
)
1568 etm_get_reg(etm_sys_config_reg
);
1569 config
= buf_get_u32(etm_sys_config_reg
->value
, 0, 32);
1571 LOG_DEBUG("ETM SYS CONFIG %08x", (unsigned) config
);
1573 max_port_size
= config
& 0x7;
1574 if (etm
->bcd_vers
>= 0x30)
1575 max_port_size
|= (config
>> 6) & 0x08;
1576 switch (max_port_size
)
1578 /* before ETMv3.0 */
1588 /* ETMv3.0 and later*/
1608 LOG_ERROR("Illegal max_port_size");
1611 command_print(CMD_CTX
, "max. port size: %i", max_port_size
);
1613 if (etm
->bcd_vers
< 0x30) {
1614 command_print(CMD_CTX
, "half-rate clocking %ssupported",
1615 (config
& (1 << 3)) ? "" : "not ");
1616 command_print(CMD_CTX
, "full-rate clocking %ssupported",
1617 (config
& (1 << 4)) ? "" : "not ");
1618 command_print(CMD_CTX
, "normal trace format %ssupported",
1619 (config
& (1 << 5)) ? "" : "not ");
1620 command_print(CMD_CTX
, "multiplex trace format %ssupported",
1621 (config
& (1 << 6)) ? "" : "not ");
1622 command_print(CMD_CTX
, "demultiplex trace format %ssupported",
1623 (config
& (1 << 7)) ? "" : "not ");
1625 /* REVISIT show which size and format are selected ... */
1626 command_print(CMD_CTX
, "current port size %ssupported",
1627 (config
& (1 << 10)) ? "" : "not ");
1628 command_print(CMD_CTX
, "current trace format %ssupported",
1629 (config
& (1 << 11)) ? "" : "not ");
1631 if (etm
->bcd_vers
>= 0x21)
1632 command_print(CMD_CTX
, "fetch comparisons %ssupported",
1633 (config
& (1 << 17)) ? "not " : "");
1634 command_print(CMD_CTX
, "FIFO full %ssupported",
1635 (config
& (1 << 8)) ? "" : "not ");
1640 COMMAND_HANDLER(handle_etm_status_command
)
1642 struct target
*target
;
1644 struct etm_context
*etm
;
1645 trace_status_t trace_status
;
1647 target
= get_current_target(CMD_CTX
);
1648 arm
= target_to_arm(target
);
1651 command_print(CMD_CTX
, "ETM: current target isn't an ARM");
1658 command_print(CMD_CTX
, "current target doesn't have an ETM configured");
1663 if (etm
->bcd_vers
>= 0x11) {
1666 reg
= etm_reg_lookup(etm
, ETM_STATUS
);
1669 if (etm_get_reg(reg
) == ERROR_OK
) {
1670 unsigned s
= buf_get_u32(reg
->value
, 0, reg
->size
);
1672 command_print(CMD_CTX
, "etm: %s%s%s%s",
1673 /* bit(1) == progbit */
1674 (etm
->bcd_vers
>= 0x12)
1676 ? "disabled" : "enabled")
1678 ((s
& (1 << 3)) && etm
->bcd_vers
>= 0x31)
1679 ? " triggered" : "",
1680 ((s
& (1 << 2)) && etm
->bcd_vers
>= 0x12)
1681 ? " start/stop" : "",
1682 ((s
& (1 << 0)) && etm
->bcd_vers
>= 0x11)
1683 ? " untraced-overflow" : "");
1684 } /* else ignore and try showing trace port status */
1687 /* Trace Port Driver status */
1688 trace_status
= etm
->capture_driver
->status(etm
);
1689 if (trace_status
== TRACE_IDLE
)
1691 command_print(CMD_CTX
, "%s: idle", etm
->capture_driver
->name
);
1695 static char *completed
= " completed";
1696 static char *running
= " is running";
1697 static char *overflowed
= ", overflowed";
1698 static char *triggered
= ", triggered";
1700 command_print(CMD_CTX
, "%s: trace collection%s%s%s",
1701 etm
->capture_driver
->name
,
1702 (trace_status
& TRACE_RUNNING
) ? running
: completed
,
1703 (trace_status
& TRACE_OVERFLOWED
) ? overflowed
: "",
1704 (trace_status
& TRACE_TRIGGERED
) ? triggered
: "");
1706 if (etm
->trace_depth
> 0)
1708 command_print(CMD_CTX
, "%i frames of trace data read",
1709 (int)(etm
->trace_depth
));
1716 COMMAND_HANDLER(handle_etm_image_command
)
1718 struct target
*target
;
1720 struct etm_context
*etm_ctx
;
1724 command_print(CMD_CTX
, "usage: etm image <file> [base address] [type]");
1728 target
= get_current_target(CMD_CTX
);
1729 arm
= target_to_arm(target
);
1732 command_print(CMD_CTX
, "ETM: current target isn't an ARM");
1739 command_print(CMD_CTX
, "current target doesn't have an ETM configured");
1745 image_close(etm_ctx
->image
);
1746 free(etm_ctx
->image
);
1747 command_print(CMD_CTX
, "previously loaded image found and closed");
1750 etm_ctx
->image
= malloc(sizeof(struct image
));
1751 etm_ctx
->image
->base_address_set
= 0;
1752 etm_ctx
->image
->start_address_set
= 0;
1754 /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
1757 etm_ctx
->image
->base_address_set
= 1;
1758 COMMAND_PARSE_NUMBER(int, CMD_ARGV
[1], etm_ctx
->image
->base_address
);
1762 etm_ctx
->image
->base_address_set
= 0;
1765 if (image_open(etm_ctx
->image
, CMD_ARGV
[0], (CMD_ARGC
>= 3) ? CMD_ARGV
[2] : NULL
) != ERROR_OK
)
1767 free(etm_ctx
->image
);
1768 etm_ctx
->image
= NULL
;
1775 COMMAND_HANDLER(handle_etm_dump_command
)
1778 struct target
*target
;
1780 struct etm_context
*etm_ctx
;
1785 command_print(CMD_CTX
, "usage: etm dump <file>");
1789 target
= get_current_target(CMD_CTX
);
1790 arm
= target_to_arm(target
);
1793 command_print(CMD_CTX
, "ETM: current target isn't an ARM");
1800 command_print(CMD_CTX
, "current target doesn't have an ETM configured");
1804 if (etm_ctx
->capture_driver
->status
== TRACE_IDLE
)
1806 command_print(CMD_CTX
, "trace capture wasn't enabled, no trace data captured");
1810 if (etm_ctx
->capture_driver
->status(etm_ctx
) & TRACE_RUNNING
)
1812 /* TODO: if on-the-fly capture is to be supported, this needs to be changed */
1813 command_print(CMD_CTX
, "trace capture not completed");
1817 /* read the trace data if it wasn't read already */
1818 if (etm_ctx
->trace_depth
== 0)
1819 etm_ctx
->capture_driver
->read_trace(etm_ctx
);
1821 if (fileio_open(&file
, CMD_ARGV
[0], FILEIO_WRITE
, FILEIO_BINARY
) != ERROR_OK
)
1826 fileio_write_u32(&file
, etm_ctx
->capture_status
);
1827 fileio_write_u32(&file
, etm_ctx
->portmode
);
1828 fileio_write_u32(&file
, etm_ctx
->tracemode
);
1829 fileio_write_u32(&file
, etm_ctx
->trace_depth
);
1831 for (i
= 0; i
< etm_ctx
->trace_depth
; i
++)
1833 fileio_write_u32(&file
, etm_ctx
->trace_data
[i
].pipestat
);
1834 fileio_write_u32(&file
, etm_ctx
->trace_data
[i
].packet
);
1835 fileio_write_u32(&file
, etm_ctx
->trace_data
[i
].flags
);
1838 fileio_close(&file
);
1843 COMMAND_HANDLER(handle_etm_load_command
)
1846 struct target
*target
;
1848 struct etm_context
*etm_ctx
;
1853 command_print(CMD_CTX
, "usage: etm load <file>");
1857 target
= get_current_target(CMD_CTX
);
1858 arm
= target_to_arm(target
);
1861 command_print(CMD_CTX
, "ETM: current target isn't an ARM");
1868 command_print(CMD_CTX
, "current target doesn't have an ETM configured");
1872 if (etm_ctx
->capture_driver
->status(etm_ctx
) & TRACE_RUNNING
)
1874 command_print(CMD_CTX
, "trace capture running, stop first");
1878 if (fileio_open(&file
, CMD_ARGV
[0], FILEIO_READ
, FILEIO_BINARY
) != ERROR_OK
)
1885 command_print(CMD_CTX
, "size isn't a multiple of 4, no valid trace data");
1886 fileio_close(&file
);
1890 if (etm_ctx
->trace_depth
> 0)
1892 free(etm_ctx
->trace_data
);
1893 etm_ctx
->trace_data
= NULL
;
1898 fileio_read_u32(&file
, &tmp
); etm_ctx
->capture_status
= tmp
;
1899 fileio_read_u32(&file
, &tmp
); etm_ctx
->portmode
= tmp
;
1900 fileio_read_u32(&file
, &tmp
); etm_ctx
->tracemode
= tmp
;
1901 fileio_read_u32(&file
, &etm_ctx
->trace_depth
);
1903 etm_ctx
->trace_data
= malloc(sizeof(struct etmv1_trace_data
) * etm_ctx
->trace_depth
);
1904 if (etm_ctx
->trace_data
== NULL
)
1906 command_print(CMD_CTX
, "not enough memory to perform operation");
1907 fileio_close(&file
);
1911 for (i
= 0; i
< etm_ctx
->trace_depth
; i
++)
1913 uint32_t pipestat
, packet
, flags
;
1914 fileio_read_u32(&file
, &pipestat
);
1915 fileio_read_u32(&file
, &packet
);
1916 fileio_read_u32(&file
, &flags
);
1917 etm_ctx
->trace_data
[i
].pipestat
= pipestat
& 0xff;
1918 etm_ctx
->trace_data
[i
].packet
= packet
& 0xffff;
1919 etm_ctx
->trace_data
[i
].flags
= flags
;
1922 fileio_close(&file
);
1927 COMMAND_HANDLER(handle_etm_trigger_percent_command
)
1929 struct target
*target
;
1931 struct etm_context
*etm_ctx
;
1933 target
= get_current_target(CMD_CTX
);
1934 arm
= target_to_arm(target
);
1937 command_print(CMD_CTX
, "ETM: current target isn't an ARM");
1944 command_print(CMD_CTX
, "current target doesn't have an ETM configured");
1951 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[0], new_value
);
1953 if ((new_value
< 2) || (new_value
> 100))
1955 command_print(CMD_CTX
, "valid settings are 2%% to 100%%");
1959 etm_ctx
->trigger_percent
= new_value
;
1963 command_print(CMD_CTX
, "%i percent of the tracebuffer reserved for after the trigger", ((int)(etm_ctx
->trigger_percent
)));
1968 COMMAND_HANDLER(handle_etm_start_command
)
1970 struct target
*target
;
1972 struct etm_context
*etm_ctx
;
1973 struct reg
*etm_ctrl_reg
;
1975 target
= get_current_target(CMD_CTX
);
1976 arm
= target_to_arm(target
);
1979 command_print(CMD_CTX
, "ETM: current target isn't an ARM");
1986 command_print(CMD_CTX
, "current target doesn't have an ETM configured");
1990 /* invalidate old tracing data */
1991 etm_ctx
->capture_status
= TRACE_IDLE
;
1992 if (etm_ctx
->trace_depth
> 0)
1994 free(etm_ctx
->trace_data
);
1995 etm_ctx
->trace_data
= NULL
;
1997 etm_ctx
->trace_depth
= 0;
1999 etm_ctrl_reg
= etm_reg_lookup(etm_ctx
, ETM_CTRL
);
2003 etm_get_reg(etm_ctrl_reg
);
2005 /* Clear programming bit (10), set port selection bit (11) */
2006 buf_set_u32(etm_ctrl_reg
->value
, 10, 2, 0x2);
2008 etm_store_reg(etm_ctrl_reg
);
2009 jtag_execute_queue();
2011 etm_ctx
->capture_driver
->start_capture(etm_ctx
);
2016 COMMAND_HANDLER(handle_etm_stop_command
)
2018 struct target
*target
;
2020 struct etm_context
*etm_ctx
;
2021 struct reg
*etm_ctrl_reg
;
2023 target
= get_current_target(CMD_CTX
);
2024 arm
= target_to_arm(target
);
2027 command_print(CMD_CTX
, "ETM: current target isn't an ARM");
2034 command_print(CMD_CTX
, "current target doesn't have an ETM configured");
2038 etm_ctrl_reg
= etm_reg_lookup(etm_ctx
, ETM_CTRL
);
2042 etm_get_reg(etm_ctrl_reg
);
2044 /* Set programming bit (10), clear port selection bit (11) */
2045 buf_set_u32(etm_ctrl_reg
->value
, 10, 2, 0x1);
2047 etm_store_reg(etm_ctrl_reg
);
2048 jtag_execute_queue();
2050 etm_ctx
->capture_driver
->stop_capture(etm_ctx
);
2055 COMMAND_HANDLER(handle_etm_analyze_command
)
2057 struct target
*target
;
2059 struct etm_context
*etm_ctx
;
2062 target
= get_current_target(CMD_CTX
);
2063 arm
= target_to_arm(target
);
2066 command_print(CMD_CTX
, "ETM: current target isn't an ARM");
2073 command_print(CMD_CTX
, "current target doesn't have an ETM configured");
2077 if ((retval
= etmv1_analyze_trace(etm_ctx
, CMD_CTX
)) != ERROR_OK
)
2081 case ERROR_ETM_ANALYSIS_FAILED
:
2082 command_print(CMD_CTX
, "further analysis failed (corrupted trace data or just end of data");
2084 case ERROR_TRACE_INSTRUCTION_UNAVAILABLE
:
2085 command_print(CMD_CTX
, "no instruction for current address available, analysis aborted");
2087 case ERROR_TRACE_IMAGE_UNAVAILABLE
:
2088 command_print(CMD_CTX
, "no image available for trace analysis");
2091 command_print(CMD_CTX
, "unknown error: %i", retval
);
2098 static const struct command_registration etm_config_command_handlers
[] = {
2101 .handler
= &handle_etm_config_command
,
2102 .mode
= COMMAND_CONFIG
,
2103 .usage
= "<target> <port_width> <port_mode> "
2104 "<clocking> <capture_driver>",
2106 COMMAND_REGISTRATION_DONE
2108 const struct command_registration etm_command_handlers
[] = {
2111 .mode
= COMMAND_ANY
,
2112 .help
= "Emebdded Trace Macrocell command group",
2113 .chain
= etm_config_command_handlers
,
2115 COMMAND_REGISTRATION_DONE
2118 static const struct command_registration etm_exec_command_handlers
[] = {
2120 .name
= "tracemode", handle_etm_tracemode_command
,
2121 .mode
= COMMAND_EXEC
,
2122 .help
= "configure/display trace mode",
2123 .usage
= "<none | data | address | all> "
2124 "<context_id_bits> <cycle_accurate> <branch_output>",
2128 .handler
= &handle_etm_info_command
,
2129 .mode
= COMMAND_EXEC
,
2130 .help
= "display info about the current target's ETM",
2133 .name
= "trigger_percent",
2134 .handler
= &handle_etm_trigger_percent_command
,
2135 .mode
= COMMAND_EXEC
,
2136 .help
= "amount (<percent>) of trace buffer "
2137 "to be filled after the trigger occured",
2141 .handler
= &handle_etm_status_command
,
2142 .mode
= COMMAND_EXEC
,
2143 .help
= "display current target's ETM status",
2147 .handler
= &handle_etm_start_command
,
2148 .mode
= COMMAND_EXEC
,
2149 .help
= "start ETM trace collection",
2153 .handler
= &handle_etm_stop_command
,
2154 .mode
= COMMAND_EXEC
,
2155 .help
= "stop ETM trace collection",
2159 .handler
= &handle_etm_analyze_command
,
2160 .mode
= COMMAND_EXEC
,
2161 .help
= "anaylze collected ETM trace",
2165 .handler
= &handle_etm_image_command
,
2166 .mode
= COMMAND_EXEC
,
2167 .help
= "load image from <file> [base address]",
2171 .handler
= &handle_etm_dump_command
,
2172 .mode
= COMMAND_EXEC
,
2173 .help
= "dump captured trace data <file>",
2177 .handler
= &handle_etm_load_command
,
2178 .mode
= COMMAND_EXEC
,
2179 .help
= "load trace data for analysis <file>",
2181 COMMAND_REGISTRATION_DONE
2184 static int etm_register_user_commands(struct command_context
*cmd_ctx
)
2186 struct command
*etm_cmd
= command_find_in_context(cmd_ctx
, "etm");
2187 return register_commands(cmd_ctx
, etm_cmd
, etm_exec_command_handlers
);
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