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 ***************************************************************************/
27 #include "arm7_9_common.h"
28 #include "arm_disassembler.h"
32 * ARM "Embedded Trace Macrocell" (ETM) support -- direct JTAG access.
34 * ETM modules collect instruction and/or data trace information, compress
35 * it, and transfer it to a debugging host through either a (buffered) trace
36 * port (often a 38-pin Mictor connector) or an Embedded Trace Buffer (ETB).
38 * There are several generations of these modules. Original versions have
39 * JTAG access through a dedicated scan chain. Recent versions have added
40 * access via coprocessor instructions, memory addressing, and the ARM Debug
41 * Interface v5 (ADIv5); and phased out direct JTAG access.
43 * This code supports up to the ETMv1.3 architecture, as seen in ETM9 and
44 * most common ARM9 systems. Note: "CoreSight ETM9" implements ETMv3.2,
45 * implying non-JTAG connectivity options.
47 * Relevant documentation includes:
48 * ARM DDI 0157G ... ETM9 (r2p2) Technical Reference Manual
49 * ARM DDI 0315B ... CoreSight ETM9 (r0p1) Technical Reference Manual
50 * ARM IHI 0014O ... Embedded Trace Macrocell, Architecture Specification
53 #define ARRAY_SIZE(x) ((int)(sizeof(x)/sizeof((x)[0])))
63 uint8_t size
; /* low-N of 32 bits */
64 uint8_t mode
; /* RO, WO, RW */
65 uint8_t bcd_vers
; /* 1.0, 2.0, etc */
70 * Registers 0..0x7f are JTAG-addressable using scanchain 6.
71 * (Or on some processors, through coprocessor operations.)
72 * Newer versions of ETM make some W/O registers R/W, and
73 * provide definitions for some previously-unused bits.
76 /* basic registers that are always there given the right ETM version */
77 static const struct etm_reg_info etm_core
[] = {
78 /* NOTE: we "know" ETM_CONFIG is listed first */
79 { ETM_CONFIG
, 32, RO
, 0x10, "ETM_config", },
81 /* ETM Trace Registers */
82 { ETM_CTRL
, 32, RW
, 0x10, "ETM_ctrl", },
83 { ETM_TRIG_EVENT
, 17, WO
, 0x10, "ETM_trig_event", },
84 { ETM_ASIC_CTRL
, 8, WO
, 0x10, "ETM_asic_ctrl", },
85 { ETM_STATUS
, 3, RO
, 0x11, "ETM_status", },
86 { ETM_SYS_CONFIG
, 9, RO
, 0x12, "ETM_sys_config", },
88 /* TraceEnable configuration */
89 { ETM_TRACE_RESOURCE_CTRL
, 32, WO
, 0x12, "ETM_trace_resource_ctrl", },
90 { ETM_TRACE_EN_CTRL2
, 16, WO
, 0x12, "ETM_trace_en_ctrl2", },
91 { ETM_TRACE_EN_EVENT
, 17, WO
, 0x10, "ETM_trace_en_event", },
92 { ETM_TRACE_EN_CTRL1
, 26, WO
, 0x10, "ETM_trace_en_ctrl1", },
94 /* ViewData configuration (data trace) */
95 { ETM_VIEWDATA_EVENT
, 17, WO
, 0x10, "ETM_viewdata_event", },
96 { ETM_VIEWDATA_CTRL1
, 32, WO
, 0x10, "ETM_viewdata_ctrl1", },
97 { ETM_VIEWDATA_CTRL2
, 32, WO
, 0x10, "ETM_viewdata_ctrl2", },
98 { ETM_VIEWDATA_CTRL3
, 17, WO
, 0x10, "ETM_viewdata_ctrl3", },
100 /* REVISIT exclude VIEWDATA_CTRL2 when it's not there */
102 { 0x78, 12, WO
, 0x20, "ETM_sync_freq", },
103 { 0x79, 32, RO
, 0x20, "ETM_id", },
106 static const struct etm_reg_info etm_fifofull
[] = {
107 /* FIFOFULL configuration */
108 { ETM_FIFOFULL_REGION
, 25, WO
, 0x10, "ETM_fifofull_region", },
109 { ETM_FIFOFULL_LEVEL
, 8, WO
, 0x10, "ETM_fifofull_level", },
112 static const struct etm_reg_info etm_addr_comp
[] = {
113 /* Address comparator register pairs */
114 #define ADDR_COMPARATOR(i) \
115 { ETM_ADDR_COMPARATOR_VALUE + (i) - 1, 32, WO, 0x10, \
116 "ETM_addr_" #i "_comparator_value", }, \
117 { ETM_ADDR_ACCESS_TYPE + (i) - 1, 7, WO, 0x10, \
118 "ETM_addr_" #i "_access_type", }
136 #undef ADDR_COMPARATOR
139 static const struct etm_reg_info etm_data_comp
[] = {
140 /* Data Value Comparators (NOTE: odd addresses are reserved) */
141 #define DATA_COMPARATOR(i) \
142 { ETM_DATA_COMPARATOR_VALUE + 2*(i) - 1, 32, WO, 0x10, \
143 "ETM_data_" #i "_comparator_value", }, \
144 { ETM_DATA_COMPARATOR_MASK + 2*(i) - 1, 32, WO, 0x10, \
145 "ETM_data_" #i "_comparator_mask", }
154 #undef DATA_COMPARATOR
157 static const struct etm_reg_info etm_counters
[] = {
158 #define ETM_COUNTER(i) \
159 { ETM_COUNTER_RELOAD_VALUE + (i) - 1, 16, WO, 0x10, \
160 "ETM_counter_" #i "_reload_value", }, \
161 { ETM_COUNTER_ENABLE + (i) - 1, 18, WO, 0x10, \
162 "ETM_counter_" #i "_enable", }, \
163 { ETM_COUNTER_RELOAD_EVENT + (i) - 1, 17, WO, 0x10, \
164 "ETM_counter_" #i "_reload_event", }, \
165 { ETM_COUNTER_VALUE + (i) - 1, 16, RO, 0x10, \
166 "ETM_counter_" #i "_value", }
174 static const struct etm_reg_info etm_sequencer
[] = {
176 { ETM_SEQUENCER_EVENT + (i), 17, WO, 0x10, \
177 "ETM_sequencer_event" #i, }
178 ETM_SEQ(0), /* 1->2 */
179 ETM_SEQ(1), /* 2->1 */
180 ETM_SEQ(2), /* 2->3 */
181 ETM_SEQ(3), /* 3->1 */
182 ETM_SEQ(4), /* 3->2 */
183 ETM_SEQ(5), /* 1->3 */
186 { ETM_SEQUENCER_STATE
, 2, RO
, 0x10, "ETM_sequencer_state", },
189 static const struct etm_reg_info etm_outputs
[] = {
190 #define ETM_OUTPUT(i) \
191 { ETM_EXTERNAL_OUTPUT + (i) - 1, 17, WO, 0x10, \
192 "ETM_external_output" #i, }
202 /* registers from 0x6c..0x7f were added after ETMv1.3 */
204 /* Context ID Comparators */
205 { 0x6c, 32, RO
, 0x20, "ETM_contextid_comparator_value1", }
206 { 0x6d, 32, RO
, 0x20, "ETM_contextid_comparator_value2", }
207 { 0x6e, 32, RO
, 0x20, "ETM_contextid_comparator_value3", }
208 { 0x6f, 32, RO
, 0x20, "ETM_contextid_comparator_mask", }
211 static int etm_reg_arch_type
= -1;
213 static int etm_get_reg(reg_t
*reg
);
214 static int etm_read_reg_w_check(reg_t
*reg
,
215 uint8_t* check_value
, uint8_t* check_mask
);
216 static int etm_register_user_commands(struct command_context_s
*cmd_ctx
);
217 static int etm_set_reg_w_exec(reg_t
*reg
, uint8_t *buf
);
218 static int etm_write_reg(reg_t
*reg
, uint32_t value
);
220 static command_t
*etm_cmd
;
223 /* Look up register by ID ... most ETM instances only
224 * support a subset of the possible registers.
226 static reg_t
*etm_reg_lookup(etm_context_t
*etm_ctx
, unsigned id
)
228 reg_cache_t
*cache
= etm_ctx
->reg_cache
;
231 for (i
= 0; i
< cache
->num_regs
; i
++) {
232 struct etm_reg_s
*reg
= cache
->reg_list
[i
].arch_info
;
234 if (reg
->reg_info
->addr
== id
)
235 return &cache
->reg_list
[i
];
238 /* caller asking for nonexistent register is a bug! */
239 /* REVISIT say which of the N targets was involved */
240 LOG_ERROR("ETM: register 0x%02x not available", id
);
244 static void etm_reg_add(unsigned bcd_vers
, arm_jtag_t
*jtag_info
,
245 reg_cache_t
*cache
, etm_reg_t
*ereg
,
246 const struct etm_reg_info
*r
, unsigned nreg
)
248 reg_t
*reg
= cache
->reg_list
;
250 reg
+= cache
->num_regs
;
251 ereg
+= cache
->num_regs
;
253 /* add up to "nreg" registers from "r", if supported by this
254 * version of the ETM, to the specified cache.
256 for (; nreg
--; r
++) {
258 /* this ETM may be too old to have some registers */
259 if (r
->bcd_vers
> bcd_vers
)
264 reg
->value
= &ereg
->value
;
265 reg
->arch_info
= ereg
;
266 reg
->arch_type
= etm_reg_arch_type
;
271 ereg
->jtag_info
= jtag_info
;
276 reg_cache_t
*etm_build_reg_cache(target_t
*target
,
277 arm_jtag_t
*jtag_info
, etm_context_t
*etm_ctx
)
279 reg_cache_t
*reg_cache
= malloc(sizeof(reg_cache_t
));
280 reg_t
*reg_list
= NULL
;
281 etm_reg_t
*arch_info
= NULL
;
282 unsigned bcd_vers
, config
;
284 /* register a register arch-type for etm registers only once */
285 if (etm_reg_arch_type
== -1)
286 etm_reg_arch_type
= register_reg_arch_type(etm_get_reg
,
289 /* the actual registers are kept in two arrays */
290 reg_list
= calloc(128, sizeof(reg_t
));
291 arch_info
= calloc(128, sizeof(etm_reg_t
));
293 /* fill in values for the reg cache */
294 reg_cache
->name
= "etm registers";
295 reg_cache
->next
= NULL
;
296 reg_cache
->reg_list
= reg_list
;
297 reg_cache
->num_regs
= 0;
299 /* add ETM_CONFIG, then parse its values to see
300 * which other registers exist in this ETM
302 etm_reg_add(0x10, jtag_info
, reg_cache
, arch_info
,
305 etm_get_reg(reg_list
);
306 etm_ctx
->config
= buf_get_u32((void *)&arch_info
->value
, 0, 32);
307 config
= etm_ctx
->config
;
309 /* figure ETM version then add base registers */
310 if (config
& (1 << 31)) {
312 LOG_WARNING("ETMv2+ support is incomplete");
314 /* REVISIT read ID register, distinguish ETMv3.3 etc;
315 * don't presume trace start/stop support is present;
316 * and include any context ID comparator registers.
319 switch (config
>> 28) {
336 LOG_WARNING("Bad ETMv1 protocol %d", config
>> 28);
343 etm_ctx
->bcd_vers
= bcd_vers
;
344 LOG_INFO("ETM v%d.%d", bcd_vers
>> 4, bcd_vers
& 0xf);
346 etm_reg_add(bcd_vers
, jtag_info
, reg_cache
, arch_info
,
347 etm_core
+ 1, ARRAY_SIZE(etm_core
) - 1);
349 /* address and data comparators; counters; outputs */
350 etm_reg_add(bcd_vers
, jtag_info
, reg_cache
, arch_info
,
351 etm_addr_comp
, 4 * (0x0f & (config
>> 0)));
352 etm_reg_add(bcd_vers
, jtag_info
, reg_cache
, arch_info
,
353 etm_data_comp
, 2 * (0x0f & (config
>> 4)));
354 etm_reg_add(bcd_vers
, jtag_info
, reg_cache
, arch_info
,
355 etm_counters
, 4 * (0x07 & (config
>> 13)));
356 etm_reg_add(bcd_vers
, jtag_info
, reg_cache
, arch_info
,
357 etm_outputs
, (0x07 & (config
>> 20)));
359 /* FIFOFULL presence is optional
360 * REVISIT for ETMv1.2 and later, don't bother adding this
361 * unless ETM_SYS_CONFIG says it's also *supported* ...
363 if (config
& (1 << 23))
364 etm_reg_add(bcd_vers
, jtag_info
, reg_cache
, arch_info
,
365 etm_fifofull
, ARRAY_SIZE(etm_fifofull
));
367 /* sequencer is optional (for state-dependant triggering) */
368 if (config
& (1 << 16))
369 etm_reg_add(bcd_vers
, jtag_info
, reg_cache
, arch_info
,
370 etm_sequencer
, ARRAY_SIZE(etm_sequencer
));
372 /* REVISIT could realloc and likely save half the memory
373 * in the two chunks we allocated...
376 /* the ETM might have an ETB connected */
377 if (strcmp(etm_ctx
->capture_driver
->name
, "etb") == 0)
379 etb_t
*etb
= etm_ctx
->capture_driver_priv
;
383 LOG_ERROR("etb selected as etm capture driver, but no ETB configured");
390 reg_cache
->next
= etb_build_reg_cache(etb
);
392 etb
->reg_cache
= reg_cache
->next
;
399 static int etm_read_reg(reg_t
*reg
)
401 return etm_read_reg_w_check(reg
, NULL
, NULL
);
404 static int etm_store_reg(reg_t
*reg
)
406 return etm_write_reg(reg
, buf_get_u32(reg
->value
, 0, reg
->size
));
409 int etm_setup(target_t
*target
)
412 uint32_t etm_ctrl_value
;
413 armv4_5_common_t
*armv4_5
= target
->arch_info
;
414 arm7_9_common_t
*arm7_9
= armv4_5
->arch_info
;
415 etm_context_t
*etm_ctx
= arm7_9
->etm_ctx
;
418 etm_ctrl_reg
= etm_reg_lookup(etm_ctx
, ETM_CTRL
);
422 /* initialize some ETM control register settings */
423 etm_get_reg(etm_ctrl_reg
);
424 etm_ctrl_value
= buf_get_u32(etm_ctrl_reg
->value
, 0, etm_ctrl_reg
->size
);
426 /* clear the ETM powerdown bit (0) */
427 etm_ctrl_value
&= ~0x1;
429 /* configure port width (6:4), mode (17:16) and clocking (13) */
430 etm_ctrl_value
= (etm_ctrl_value
&
431 ~ETM_PORT_WIDTH_MASK
& ~ETM_PORT_MODE_MASK
& ~ETM_PORT_CLOCK_MASK
)
434 buf_set_u32(etm_ctrl_reg
->value
, 0, etm_ctrl_reg
->size
, etm_ctrl_value
);
435 etm_store_reg(etm_ctrl_reg
);
437 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
440 if ((retval
= etm_ctx
->capture_driver
->init(etm_ctx
)) != ERROR_OK
)
442 LOG_ERROR("ETM capture driver initialization failed");
448 static int etm_get_reg(reg_t
*reg
)
452 if ((retval
= etm_read_reg(reg
)) != ERROR_OK
)
454 LOG_ERROR("BUG: error scheduling etm register read");
458 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
460 LOG_ERROR("register read failed");
467 static int etm_read_reg_w_check(reg_t
*reg
,
468 uint8_t* check_value
, uint8_t* check_mask
)
470 etm_reg_t
*etm_reg
= reg
->arch_info
;
471 const struct etm_reg_info
*r
= etm_reg
->reg_info
;
472 uint8_t reg_addr
= r
->addr
& 0x7f;
473 scan_field_t fields
[3];
475 if (etm_reg
->reg_info
->mode
== WO
) {
476 LOG_ERROR("BUG: can't read write-only register %s", r
->name
);
477 return ERROR_INVALID_ARGUMENTS
;
480 LOG_DEBUG("%s (%u)", r
->name
, reg_addr
);
482 jtag_set_end_state(TAP_IDLE
);
483 arm_jtag_scann(etm_reg
->jtag_info
, 0x6);
484 arm_jtag_set_instr(etm_reg
->jtag_info
, etm_reg
->jtag_info
->intest_instr
, NULL
);
486 fields
[0].tap
= etm_reg
->jtag_info
->tap
;
487 fields
[0].num_bits
= 32;
488 fields
[0].out_value
= reg
->value
;
489 fields
[0].in_value
= NULL
;
490 fields
[0].check_value
= NULL
;
491 fields
[0].check_mask
= NULL
;
493 fields
[1].tap
= etm_reg
->jtag_info
->tap
;
494 fields
[1].num_bits
= 7;
495 fields
[1].out_value
= malloc(1);
496 buf_set_u32(fields
[1].out_value
, 0, 7, reg_addr
);
497 fields
[1].in_value
= NULL
;
498 fields
[1].check_value
= NULL
;
499 fields
[1].check_mask
= NULL
;
501 fields
[2].tap
= etm_reg
->jtag_info
->tap
;
502 fields
[2].num_bits
= 1;
503 fields
[2].out_value
= malloc(1);
504 buf_set_u32(fields
[2].out_value
, 0, 1, 0);
505 fields
[2].in_value
= NULL
;
506 fields
[2].check_value
= NULL
;
507 fields
[2].check_mask
= NULL
;
509 jtag_add_dr_scan(3, fields
, jtag_get_end_state());
511 fields
[0].in_value
= reg
->value
;
512 fields
[0].check_value
= check_value
;
513 fields
[0].check_mask
= check_mask
;
515 jtag_add_dr_scan_check(3, fields
, jtag_get_end_state());
517 free(fields
[1].out_value
);
518 free(fields
[2].out_value
);
523 static int etm_set_reg(reg_t
*reg
, uint32_t value
)
527 if ((retval
= etm_write_reg(reg
, value
)) != ERROR_OK
)
529 LOG_ERROR("BUG: error scheduling etm register write");
533 buf_set_u32(reg
->value
, 0, reg
->size
, value
);
540 static int etm_set_reg_w_exec(reg_t
*reg
, uint8_t *buf
)
544 etm_set_reg(reg
, buf_get_u32(buf
, 0, reg
->size
));
546 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
548 LOG_ERROR("register write failed");
554 static int etm_write_reg(reg_t
*reg
, uint32_t value
)
556 etm_reg_t
*etm_reg
= reg
->arch_info
;
557 const struct etm_reg_info
*r
= etm_reg
->reg_info
;
558 uint8_t reg_addr
= r
->addr
& 0x7f;
559 scan_field_t fields
[3];
561 if (etm_reg
->reg_info
->mode
== RO
) {
562 LOG_ERROR("BUG: can't write read--only register %s", r
->name
);
563 return ERROR_INVALID_ARGUMENTS
;
566 LOG_DEBUG("%s (%u): 0x%8.8" PRIx32
"", r
->name
, reg_addr
, value
);
568 jtag_set_end_state(TAP_IDLE
);
569 arm_jtag_scann(etm_reg
->jtag_info
, 0x6);
570 arm_jtag_set_instr(etm_reg
->jtag_info
, etm_reg
->jtag_info
->intest_instr
, NULL
);
572 fields
[0].tap
= etm_reg
->jtag_info
->tap
;
573 fields
[0].num_bits
= 32;
575 fields
[0].out_value
= tmp1
;
576 buf_set_u32(fields
[0].out_value
, 0, 32, value
);
577 fields
[0].in_value
= NULL
;
579 fields
[1].tap
= etm_reg
->jtag_info
->tap
;
580 fields
[1].num_bits
= 7;
582 fields
[1].out_value
= &tmp2
;
583 buf_set_u32(fields
[1].out_value
, 0, 7, reg_addr
);
584 fields
[1].in_value
= NULL
;
586 fields
[2].tap
= etm_reg
->jtag_info
->tap
;
587 fields
[2].num_bits
= 1;
589 fields
[2].out_value
= &tmp3
;
590 buf_set_u32(fields
[2].out_value
, 0, 1, 1);
591 fields
[2].in_value
= NULL
;
593 jtag_add_dr_scan(3, fields
, jtag_get_end_state());
599 /* ETM trace analysis functionality
602 extern etm_capture_driver_t etm_dummy_capture_driver
;
603 #if BUILD_OOCD_TRACE == 1
604 extern etm_capture_driver_t oocd_trace_capture_driver
;
607 static etm_capture_driver_t
*etm_capture_drivers
[] =
610 &etm_dummy_capture_driver
,
611 #if BUILD_OOCD_TRACE == 1
612 &oocd_trace_capture_driver
,
617 static int etm_read_instruction(etm_context_t
*ctx
, arm_instruction_t
*instruction
)
626 return ERROR_TRACE_IMAGE_UNAVAILABLE
;
628 /* search for the section the current instruction belongs to */
629 for (i
= 0; i
< ctx
->image
->num_sections
; i
++)
631 if ((ctx
->image
->sections
[i
].base_address
<= ctx
->current_pc
) &&
632 (ctx
->image
->sections
[i
].base_address
+ ctx
->image
->sections
[i
].size
> ctx
->current_pc
))
641 /* current instruction couldn't be found in the image */
642 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE
;
645 if (ctx
->core_state
== ARMV4_5_STATE_ARM
)
648 if ((retval
= image_read_section(ctx
->image
, section
,
649 ctx
->current_pc
- ctx
->image
->sections
[section
].base_address
,
650 4, buf
, &size_read
)) != ERROR_OK
)
652 LOG_ERROR("error while reading instruction: %i", retval
);
653 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE
;
655 opcode
= target_buffer_get_u32(ctx
->target
, buf
);
656 arm_evaluate_opcode(opcode
, ctx
->current_pc
, instruction
);
658 else if (ctx
->core_state
== ARMV4_5_STATE_THUMB
)
661 if ((retval
= image_read_section(ctx
->image
, section
,
662 ctx
->current_pc
- ctx
->image
->sections
[section
].base_address
,
663 2, buf
, &size_read
)) != ERROR_OK
)
665 LOG_ERROR("error while reading instruction: %i", retval
);
666 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE
;
668 opcode
= target_buffer_get_u16(ctx
->target
, buf
);
669 thumb_evaluate_opcode(opcode
, ctx
->current_pc
, instruction
);
671 else if (ctx
->core_state
== ARMV4_5_STATE_JAZELLE
)
673 LOG_ERROR("BUG: tracing of jazelle code not supported");
678 LOG_ERROR("BUG: unknown core state encountered");
685 static int etmv1_next_packet(etm_context_t
*ctx
, uint8_t *packet
, int apo
)
687 while (ctx
->data_index
< ctx
->trace_depth
)
689 /* if the caller specified an address packet offset, skip until the
690 * we reach the n-th cycle marked with tracesync */
693 if (ctx
->trace_data
[ctx
->data_index
].flags
& ETMV1_TRACESYNC_CYCLE
)
704 /* no tracedata output during a TD cycle
705 * or in a trigger cycle */
706 if ((ctx
->trace_data
[ctx
->data_index
].pipestat
== STAT_TD
)
707 || (ctx
->trace_data
[ctx
->data_index
].flags
& ETMV1_TRIGGER_CYCLE
))
714 if ((ctx
->portmode
& ETM_PORT_WIDTH_MASK
) == ETM_PORT_16BIT
)
716 if (ctx
->data_half
== 0)
718 *packet
= ctx
->trace_data
[ctx
->data_index
].packet
& 0xff;
723 *packet
= (ctx
->trace_data
[ctx
->data_index
].packet
& 0xff00) >> 8;
728 else if ((ctx
->portmode
& ETM_PORT_WIDTH_MASK
) == ETM_PORT_8BIT
)
730 *packet
= ctx
->trace_data
[ctx
->data_index
].packet
& 0xff;
735 /* on a 4-bit port, a packet will be output during two consecutive cycles */
736 if (ctx
->data_index
> (ctx
->trace_depth
- 2))
739 *packet
= ctx
->trace_data
[ctx
->data_index
].packet
& 0xf;
740 *packet
|= (ctx
->trace_data
[ctx
->data_index
+ 1].packet
& 0xf) << 4;
741 ctx
->data_index
+= 2;
750 static int etmv1_branch_address(etm_context_t
*ctx
)
758 /* quit analysis if less than two cycles are left in the trace
759 * because we can't extract the APO */
760 if (ctx
->data_index
> (ctx
->trace_depth
- 2))
763 /* a BE could be output during an APO cycle, skip the current
764 * and continue with the new one */
765 if (ctx
->trace_data
[ctx
->pipe_index
+ 1].pipestat
& 0x4)
767 if (ctx
->trace_data
[ctx
->pipe_index
+ 2].pipestat
& 0x4)
770 /* address packet offset encoded in the next two cycles' pipestat bits */
771 apo
= ctx
->trace_data
[ctx
->pipe_index
+ 1].pipestat
& 0x3;
772 apo
|= (ctx
->trace_data
[ctx
->pipe_index
+ 2].pipestat
& 0x3) << 2;
774 /* count number of tracesync cycles between current pipe_index and data_index
775 * i.e. the number of tracesyncs that data_index already passed by
776 * to subtract them from the APO */
777 for (i
= ctx
->pipe_index
; i
< ctx
->data_index
; i
++)
779 if (ctx
->trace_data
[ctx
->pipe_index
+ 1].pipestat
& ETMV1_TRACESYNC_CYCLE
)
783 /* extract up to four 7-bit packets */
785 if ((retval
= etmv1_next_packet(ctx
, &packet
, (shift
== 0) ? apo
+ 1 : 0)) != 0)
787 ctx
->last_branch
&= ~(0x7f << shift
);
788 ctx
->last_branch
|= (packet
& 0x7f) << shift
;
790 } while ((packet
& 0x80) && (shift
< 28));
792 /* one last packet holding 4 bits of the address, plus the branch reason code */
793 if ((shift
== 28) && (packet
& 0x80))
795 if ((retval
= etmv1_next_packet(ctx
, &packet
, 0)) != 0)
797 ctx
->last_branch
&= 0x0fffffff;
798 ctx
->last_branch
|= (packet
& 0x0f) << 28;
799 ctx
->last_branch_reason
= (packet
& 0x70) >> 4;
804 ctx
->last_branch_reason
= 0;
812 /* if a full address was output, we might have branched into Jazelle state */
813 if ((shift
== 32) && (packet
& 0x80))
815 ctx
->core_state
= ARMV4_5_STATE_JAZELLE
;
819 /* if we didn't branch into Jazelle state, the current processor state is
820 * encoded in bit 0 of the branch target address */
821 if (ctx
->last_branch
& 0x1)
823 ctx
->core_state
= ARMV4_5_STATE_THUMB
;
824 ctx
->last_branch
&= ~0x1;
828 ctx
->core_state
= ARMV4_5_STATE_ARM
;
829 ctx
->last_branch
&= ~0x3;
836 static int etmv1_data(etm_context_t
*ctx
, int size
, uint32_t *data
)
842 for (j
= 0; j
< size
; j
++)
844 if ((retval
= etmv1_next_packet(ctx
, &buf
[j
], 0)) != 0)
850 LOG_ERROR("TODO: add support for 64-bit values");
854 *data
= target_buffer_get_u32(ctx
->target
, buf
);
856 *data
= target_buffer_get_u16(ctx
->target
, buf
);
865 static int etmv1_analyze_trace(etm_context_t
*ctx
, struct command_context_s
*cmd_ctx
)
868 arm_instruction_t instruction
;
870 /* read the trace data if it wasn't read already */
871 if (ctx
->trace_depth
== 0)
872 ctx
->capture_driver
->read_trace(ctx
);
874 /* start at the beginning of the captured trace */
879 /* neither the PC nor the data pointer are valid */
883 while (ctx
->pipe_index
< ctx
->trace_depth
)
885 uint8_t pipestat
= ctx
->trace_data
[ctx
->pipe_index
].pipestat
;
886 uint32_t next_pc
= ctx
->current_pc
;
887 uint32_t old_data_index
= ctx
->data_index
;
888 uint32_t old_data_half
= ctx
->data_half
;
889 uint32_t old_index
= ctx
->pipe_index
;
890 uint32_t last_instruction
= ctx
->last_instruction
;
892 int current_pc_ok
= ctx
->pc_ok
;
894 if (ctx
->trace_data
[ctx
->pipe_index
].flags
& ETMV1_TRIGGER_CYCLE
)
896 command_print(cmd_ctx
, "--- trigger ---");
899 /* instructions execute in IE/D or BE/D cycles */
900 if ((pipestat
== STAT_IE
) || (pipestat
== STAT_ID
))
901 ctx
->last_instruction
= ctx
->pipe_index
;
903 /* if we don't have a valid pc skip until we reach an indirect branch */
904 if ((!ctx
->pc_ok
) && (pipestat
!= STAT_BE
))
910 /* any indirect branch could have interrupted instruction flow
911 * - the branch reason code could indicate a trace discontinuity
912 * - a branch to the exception vectors indicates an exception
914 if ((pipestat
== STAT_BE
) || (pipestat
== STAT_BD
))
916 /* backup current data index, to be able to consume the branch address
917 * before examining data address and values
919 old_data_index
= ctx
->data_index
;
920 old_data_half
= ctx
->data_half
;
922 ctx
->last_instruction
= ctx
->pipe_index
;
924 if ((retval
= etmv1_branch_address(ctx
)) != 0)
926 /* negative return value from etmv1_branch_address means we ran out of packets,
927 * quit analysing the trace */
931 /* a positive return values means the current branch was abandoned,
932 * and a new branch was encountered in cycle ctx->pipe_index + retval;
934 LOG_WARNING("abandoned branch encountered, correctnes of analysis uncertain");
935 ctx
->pipe_index
+= retval
;
939 /* skip over APO cycles */
940 ctx
->pipe_index
+= 2;
942 switch (ctx
->last_branch_reason
)
944 case 0x0: /* normal PC change */
945 next_pc
= ctx
->last_branch
;
947 case 0x1: /* tracing enabled */
948 command_print(cmd_ctx
, "--- tracing enabled at 0x%8.8" PRIx32
" ---", ctx
->last_branch
);
949 ctx
->current_pc
= ctx
->last_branch
;
953 case 0x2: /* trace restarted after FIFO overflow */
954 command_print(cmd_ctx
, "--- trace restarted after FIFO overflow at 0x%8.8" PRIx32
" ---", ctx
->last_branch
);
955 ctx
->current_pc
= ctx
->last_branch
;
959 case 0x3: /* exit from debug state */
960 command_print(cmd_ctx
, "--- exit from debug state at 0x%8.8" PRIx32
" ---", ctx
->last_branch
);
961 ctx
->current_pc
= ctx
->last_branch
;
965 case 0x4: /* periodic synchronization point */
966 next_pc
= ctx
->last_branch
;
967 /* if we had no valid PC prior to this synchronization point,
968 * we have to move on with the next trace cycle
972 command_print(cmd_ctx
, "--- periodic synchronization point at 0x%8.8" PRIx32
" ---", next_pc
);
973 ctx
->current_pc
= next_pc
;
978 default: /* reserved */
979 LOG_ERROR("BUG: branch reason code 0x%" PRIx32
" is reserved", ctx
->last_branch_reason
);
984 /* if we got here the branch was a normal PC change
985 * (or a periodic synchronization point, which means the same for that matter)
986 * if we didn't accquire a complete PC continue with the next cycle
991 /* indirect branch to the exception vector means an exception occured */
992 if ((ctx
->last_branch
<= 0x20)
993 || ((ctx
->last_branch
>= 0xffff0000) && (ctx
->last_branch
<= 0xffff0020)))
995 if ((ctx
->last_branch
& 0xff) == 0x10)
997 command_print(cmd_ctx
, "data abort");
1001 command_print(cmd_ctx
, "exception vector 0x%2.2" PRIx32
"", ctx
->last_branch
);
1002 ctx
->current_pc
= ctx
->last_branch
;
1009 /* an instruction was executed (or not, depending on the condition flags)
1010 * retrieve it from the image for displaying */
1011 if (ctx
->pc_ok
&& (pipestat
!= STAT_WT
) && (pipestat
!= STAT_TD
) &&
1012 !(((pipestat
== STAT_BE
) || (pipestat
== STAT_BD
)) &&
1013 ((ctx
->last_branch_reason
!= 0x0) && (ctx
->last_branch_reason
!= 0x4))))
1015 if ((retval
= etm_read_instruction(ctx
, &instruction
)) != ERROR_OK
)
1017 /* can't continue tracing with no image available */
1018 if (retval
== ERROR_TRACE_IMAGE_UNAVAILABLE
)
1022 else if (retval
== ERROR_TRACE_INSTRUCTION_UNAVAILABLE
)
1024 /* TODO: handle incomplete images
1025 * for now we just quit the analsysis*/
1030 cycles
= old_index
- last_instruction
;
1033 if ((pipestat
== STAT_ID
) || (pipestat
== STAT_BD
))
1035 uint32_t new_data_index
= ctx
->data_index
;
1036 uint32_t new_data_half
= ctx
->data_half
;
1038 /* in case of a branch with data, the branch target address was consumed before
1039 * we temporarily go back to the saved data index */
1040 if (pipestat
== STAT_BD
)
1042 ctx
->data_index
= old_data_index
;
1043 ctx
->data_half
= old_data_half
;
1046 if (ctx
->tracemode
& ETMV1_TRACE_ADDR
)
1052 if ((retval
= etmv1_next_packet(ctx
, &packet
, 0)) != 0)
1053 return ERROR_ETM_ANALYSIS_FAILED
;
1054 ctx
->last_ptr
&= ~(0x7f << shift
);
1055 ctx
->last_ptr
|= (packet
& 0x7f) << shift
;
1057 } while ((packet
& 0x80) && (shift
< 32));
1064 command_print(cmd_ctx
, "address: 0x%8.8" PRIx32
"", ctx
->last_ptr
);
1068 if (ctx
->tracemode
& ETMV1_TRACE_DATA
)
1070 if ((instruction
.type
== ARM_LDM
) || (instruction
.type
== ARM_STM
))
1073 for (i
= 0; i
< 16; i
++)
1075 if (instruction
.info
.load_store_multiple
.register_list
& (1 << i
))
1078 if (etmv1_data(ctx
, 4, &data
) != 0)
1079 return ERROR_ETM_ANALYSIS_FAILED
;
1080 command_print(cmd_ctx
, "data: 0x%8.8" PRIx32
"", data
);
1084 else if ((instruction
.type
>= ARM_LDR
) && (instruction
.type
<= ARM_STRH
))
1087 if (etmv1_data(ctx
, arm_access_size(&instruction
), &data
) != 0)
1088 return ERROR_ETM_ANALYSIS_FAILED
;
1089 command_print(cmd_ctx
, "data: 0x%8.8" PRIx32
"", data
);
1093 /* restore data index after consuming BD address and data */
1094 if (pipestat
== STAT_BD
)
1096 ctx
->data_index
= new_data_index
;
1097 ctx
->data_half
= new_data_half
;
1102 if ((pipestat
== STAT_IE
) || (pipestat
== STAT_ID
))
1104 if (((instruction
.type
== ARM_B
) ||
1105 (instruction
.type
== ARM_BL
) ||
1106 (instruction
.type
== ARM_BLX
)) &&
1107 (instruction
.info
.b_bl_bx_blx
.target_address
!= 0xffffffff))
1109 next_pc
= instruction
.info
.b_bl_bx_blx
.target_address
;
1113 next_pc
+= (ctx
->core_state
== ARMV4_5_STATE_ARM
) ? 4 : 2;
1116 else if (pipestat
== STAT_IN
)
1118 next_pc
+= (ctx
->core_state
== ARMV4_5_STATE_ARM
) ? 4 : 2;
1121 if ((pipestat
!= STAT_TD
) && (pipestat
!= STAT_WT
))
1123 char cycles_text
[32] = "";
1125 /* if the trace was captured with cycle accurate tracing enabled,
1126 * output the number of cycles since the last executed instruction
1128 if (ctx
->tracemode
& ETMV1_CYCLE_ACCURATE
)
1130 snprintf(cycles_text
, 32, " (%i %s)",
1132 (cycles
== 1) ? "cycle" : "cycles");
1135 command_print(cmd_ctx
, "%s%s%s",
1137 (pipestat
== STAT_IN
) ? " (not executed)" : "",
1140 ctx
->current_pc
= next_pc
;
1142 /* packets for an instruction don't start on or before the preceding
1143 * functional pipestat (i.e. other than WT or TD)
1145 if (ctx
->data_index
<= ctx
->pipe_index
)
1147 ctx
->data_index
= ctx
->pipe_index
+ 1;
1152 ctx
->pipe_index
+= 1;
1158 static int handle_etm_tracemode_command_update(
1159 struct command_context_s
*cmd_ctx
,
1160 char **args
, etmv1_tracemode_t
*mode
)
1162 etmv1_tracemode_t tracemode
;
1164 /* what parts of data access are traced? */
1165 if (strcmp(args
[0], "none") == 0)
1166 tracemode
= ETMV1_TRACE_NONE
;
1167 else if (strcmp(args
[0], "data") == 0)
1168 tracemode
= ETMV1_TRACE_DATA
;
1169 else if (strcmp(args
[0], "address") == 0)
1170 tracemode
= ETMV1_TRACE_ADDR
;
1171 else if (strcmp(args
[0], "all") == 0)
1172 tracemode
= ETMV1_TRACE_DATA
| ETMV1_TRACE_ADDR
;
1175 command_print(cmd_ctx
, "invalid option '%s'", args
[0]);
1180 COMMAND_PARSE_NUMBER(u8
, args
[1], context_id
);
1184 tracemode
|= ETMV1_CONTEXTID_NONE
;
1187 tracemode
|= ETMV1_CONTEXTID_8
;
1190 tracemode
|= ETMV1_CONTEXTID_16
;
1193 tracemode
|= ETMV1_CONTEXTID_32
;
1196 command_print(cmd_ctx
, "invalid option '%s'", args
[1]);
1200 if (strcmp(args
[2], "enable") == 0)
1201 tracemode
|= ETMV1_CYCLE_ACCURATE
;
1202 else if (strcmp(args
[2], "disable") == 0)
1206 command_print(cmd_ctx
, "invalid option '%s'", args
[2]);
1210 if (strcmp(args
[3], "enable") == 0)
1211 tracemode
|= ETMV1_BRANCH_OUTPUT
;
1212 else if (strcmp(args
[3], "disable") == 0)
1216 command_print(cmd_ctx
, "invalid option '%s'", args
[3]);
1221 * - CPRT tracing (coprocessor register transfers)
1222 * - debug request (causes debug entry on trigger)
1223 * - stall on FIFOFULL (preventing tracedata lossage)
1230 static int handle_etm_tracemode_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1232 target_t
*target
= get_current_target(cmd_ctx
);
1234 armv4_5_common_t
*armv4_5
;
1235 arm7_9_common_t
*arm7_9
;
1236 if (arm7_9_get_arch_pointers(target
, &armv4_5
, &arm7_9
) != ERROR_OK
)
1238 command_print(cmd_ctx
, "current target isn't an ARM7/ARM9 target");
1242 if (!arm7_9
->etm_ctx
)
1244 command_print(cmd_ctx
, "current target doesn't have an ETM configured");
1248 etmv1_tracemode_t tracemode
= arm7_9
->etm_ctx
->tracemode
;
1254 handle_etm_tracemode_command_update(cmd_ctx
, args
, &tracemode
);
1257 command_print(cmd_ctx
, "usage: configure trace mode "
1258 "<none | data | address | all> "
1259 "<context id bits> <cycle accurate> <branch output>");
1263 command_print(cmd_ctx
, "current tracemode configuration:");
1265 switch (tracemode
& ETMV1_TRACE_MASK
)
1267 case ETMV1_TRACE_NONE
:
1268 command_print(cmd_ctx
, "data tracing: none");
1270 case ETMV1_TRACE_DATA
:
1271 command_print(cmd_ctx
, "data tracing: data only");
1273 case ETMV1_TRACE_ADDR
:
1274 command_print(cmd_ctx
, "data tracing: address only");
1276 case ETMV1_TRACE_DATA
| ETMV1_TRACE_ADDR
:
1277 command_print(cmd_ctx
, "data tracing: address and data");
1281 switch (tracemode
& ETMV1_CONTEXTID_MASK
)
1283 case ETMV1_CONTEXTID_NONE
:
1284 command_print(cmd_ctx
, "contextid tracing: none");
1286 case ETMV1_CONTEXTID_8
:
1287 command_print(cmd_ctx
, "contextid tracing: 8 bit");
1289 case ETMV1_CONTEXTID_16
:
1290 command_print(cmd_ctx
, "contextid tracing: 16 bit");
1292 case ETMV1_CONTEXTID_32
:
1293 command_print(cmd_ctx
, "contextid tracing: 32 bit");
1297 if (tracemode
& ETMV1_CYCLE_ACCURATE
)
1299 command_print(cmd_ctx
, "cycle-accurate tracing enabled");
1303 command_print(cmd_ctx
, "cycle-accurate tracing disabled");
1306 if (tracemode
& ETMV1_BRANCH_OUTPUT
)
1308 command_print(cmd_ctx
, "full branch address output enabled");
1312 command_print(cmd_ctx
, "full branch address output disabled");
1315 /* only update ETM_CTRL register if tracemode changed */
1316 if (arm7_9
->etm_ctx
->tracemode
!= tracemode
)
1318 reg_t
*etm_ctrl_reg
;
1320 etm_ctrl_reg
= etm_reg_lookup(arm7_9
->etm_ctx
, ETM_CTRL
);
1324 etm_get_reg(etm_ctrl_reg
);
1326 buf_set_u32(etm_ctrl_reg
->value
, 2, 2, tracemode
& ETMV1_TRACE_MASK
);
1327 buf_set_u32(etm_ctrl_reg
->value
, 14, 2, (tracemode
& ETMV1_CONTEXTID_MASK
) >> 4);
1328 buf_set_u32(etm_ctrl_reg
->value
, 12, 1, (tracemode
& ETMV1_CYCLE_ACCURATE
) >> 8);
1329 buf_set_u32(etm_ctrl_reg
->value
, 8, 1, (tracemode
& ETMV1_BRANCH_OUTPUT
) >> 9);
1330 etm_store_reg(etm_ctrl_reg
);
1332 arm7_9
->etm_ctx
->tracemode
= tracemode
;
1334 /* invalidate old trace data */
1335 arm7_9
->etm_ctx
->capture_status
= TRACE_IDLE
;
1336 if (arm7_9
->etm_ctx
->trace_depth
> 0)
1338 free(arm7_9
->etm_ctx
->trace_data
);
1339 arm7_9
->etm_ctx
->trace_data
= NULL
;
1341 arm7_9
->etm_ctx
->trace_depth
= 0;
1347 static int handle_etm_config_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1350 armv4_5_common_t
*armv4_5
;
1351 arm7_9_common_t
*arm7_9
;
1352 etm_portmode_t portmode
= 0x0;
1353 etm_context_t
*etm_ctx
= malloc(sizeof(etm_context_t
));
1359 return ERROR_COMMAND_SYNTAX_ERROR
;
1362 target
= get_target(args
[0]);
1365 LOG_ERROR("target '%s' not defined", args
[0]);
1370 if (arm7_9_get_arch_pointers(target
, &armv4_5
, &arm7_9
) != ERROR_OK
)
1372 command_print(cmd_ctx
, "current target isn't an ARM7/ARM9 target");
1378 COMMAND_PARSE_NUMBER(u8
, args
[1], port_width
);
1382 portmode
|= ETM_PORT_4BIT
;
1385 portmode
|= ETM_PORT_8BIT
;
1388 portmode
|= ETM_PORT_16BIT
;
1391 command_print(cmd_ctx
, "unsupported ETM port width '%s', must be 4, 8 or 16", args
[1]);
1396 if (strcmp("normal", args
[2]) == 0)
1398 portmode
|= ETM_PORT_NORMAL
;
1400 else if (strcmp("multiplexed", args
[2]) == 0)
1402 portmode
|= ETM_PORT_MUXED
;
1404 else if (strcmp("demultiplexed", args
[2]) == 0)
1406 portmode
|= ETM_PORT_DEMUXED
;
1410 command_print(cmd_ctx
, "unsupported ETM port mode '%s', must be 'normal', 'multiplexed' or 'demultiplexed'", args
[2]);
1415 if (strcmp("half", args
[3]) == 0)
1417 portmode
|= ETM_PORT_HALF_CLOCK
;
1419 else if (strcmp("full", args
[3]) == 0)
1421 portmode
|= ETM_PORT_FULL_CLOCK
;
1425 command_print(cmd_ctx
, "unsupported ETM port clocking '%s', must be 'full' or 'half'", args
[3]);
1430 for (i
= 0; etm_capture_drivers
[i
]; i
++)
1432 if (strcmp(args
[4], etm_capture_drivers
[i
]->name
) == 0)
1435 if ((retval
= etm_capture_drivers
[i
]->register_commands(cmd_ctx
)) != ERROR_OK
)
1441 etm_ctx
->capture_driver
= etm_capture_drivers
[i
];
1447 if (!etm_capture_drivers
[i
])
1449 /* no supported capture driver found, don't register an ETM */
1451 LOG_ERROR("trace capture driver '%s' not found", args
[4]);
1455 etm_ctx
->target
= target
;
1456 etm_ctx
->trigger_percent
= 50;
1457 etm_ctx
->trace_data
= NULL
;
1458 etm_ctx
->trace_depth
= 0;
1459 etm_ctx
->portmode
= portmode
;
1460 etm_ctx
->tracemode
= 0x0;
1461 etm_ctx
->core_state
= ARMV4_5_STATE_ARM
;
1462 etm_ctx
->image
= NULL
;
1463 etm_ctx
->pipe_index
= 0;
1464 etm_ctx
->data_index
= 0;
1465 etm_ctx
->current_pc
= 0x0;
1467 etm_ctx
->last_branch
= 0x0;
1468 etm_ctx
->last_branch_reason
= 0x0;
1469 etm_ctx
->last_ptr
= 0x0;
1470 etm_ctx
->ptr_ok
= 0x0;
1471 etm_ctx
->last_instruction
= 0;
1473 arm7_9
->etm_ctx
= etm_ctx
;
1475 return etm_register_user_commands(cmd_ctx
);
1478 static int handle_etm_info_command(struct command_context_s
*cmd_ctx
,
1479 char *cmd
, char **args
, int argc
)
1482 armv4_5_common_t
*armv4_5
;
1483 arm7_9_common_t
*arm7_9
;
1485 reg_t
*etm_sys_config_reg
;
1489 target
= get_current_target(cmd_ctx
);
1491 if (arm7_9_get_arch_pointers(target
, &armv4_5
, &arm7_9
) != ERROR_OK
)
1493 command_print(cmd_ctx
, "current target isn't an ARM7/ARM9 target");
1497 etm
= arm7_9
->etm_ctx
;
1500 command_print(cmd_ctx
, "current target doesn't have an ETM configured");
1504 command_print(cmd_ctx
, "ETM v%d.%d",
1505 etm
->bcd_vers
>> 4, etm
->bcd_vers
& 0xf);
1506 command_print(cmd_ctx
, "pairs of address comparators: %i",
1507 (int) (etm
->config
>> 0) & 0x0f);
1508 command_print(cmd_ctx
, "data comparators: %i",
1509 (int) (etm
->config
>> 4) & 0x0f);
1510 command_print(cmd_ctx
, "memory map decoders: %i",
1511 (int) (etm
->config
>> 8) & 0x1f);
1512 command_print(cmd_ctx
, "number of counters: %i",
1513 (int) (etm
->config
>> 13) & 0x07);
1514 command_print(cmd_ctx
, "sequencer %spresent",
1515 (int) (etm
->config
& (1 << 16)) ? "" : "not ");
1516 command_print(cmd_ctx
, "number of ext. inputs: %i",
1517 (int) (etm
->config
>> 17) & 0x07);
1518 command_print(cmd_ctx
, "number of ext. outputs: %i",
1519 (int) (etm
->config
>> 20) & 0x07);
1520 command_print(cmd_ctx
, "FIFO full %spresent",
1521 (int) (etm
->config
& (1 << 23)) ? "" : "not ");
1522 if (etm
->bcd_vers
< 0x20)
1523 command_print(cmd_ctx
, "protocol version: %i",
1524 (int) (etm
->config
>> 28) & 0x07);
1526 command_print(cmd_ctx
, "trace start/stop %spresent",
1527 (etm
->config
& (1 << 26)) ? "" : "not ");
1528 command_print(cmd_ctx
, "number of context comparators: %i",
1529 (int) (etm
->config
>> 24) & 0x03);
1532 /* SYS_CONFIG isn't present before ETMv1.2 */
1533 etm_sys_config_reg
= etm_reg_lookup(etm
, ETM_SYS_CONFIG
);
1534 if (!etm_sys_config_reg
)
1537 etm_get_reg(etm_sys_config_reg
);
1539 switch (buf_get_u32(etm_sys_config_reg
->value
, 0, 3))
1551 LOG_ERROR("Illegal max_port_size");
1554 command_print(cmd_ctx
, "max. port size: %i", max_port_size
);
1556 command_print(cmd_ctx
, "half-rate clocking %ssupported",
1557 (buf_get_u32(etm_sys_config_reg
->value
, 3, 1) == 1) ? "" : "not ");
1558 command_print(cmd_ctx
, "full-rate clocking %ssupported",
1559 (buf_get_u32(etm_sys_config_reg
->value
, 4, 1) == 1) ? "" : "not ");
1560 command_print(cmd_ctx
, "normal trace format %ssupported",
1561 (buf_get_u32(etm_sys_config_reg
->value
, 5, 1) == 1) ? "" : "not ");
1562 command_print(cmd_ctx
, "multiplex trace format %ssupported",
1563 (buf_get_u32(etm_sys_config_reg
->value
, 6, 1) == 1) ? "" : "not ");
1564 command_print(cmd_ctx
, "demultiplex trace format %ssupported",
1565 (buf_get_u32(etm_sys_config_reg
->value
, 7, 1) == 1) ? "" : "not ");
1566 command_print(cmd_ctx
, "FIFO full %ssupported",
1567 (buf_get_u32(etm_sys_config_reg
->value
, 8, 1) == 1) ? "" : "not ");
1572 static int handle_etm_status_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1575 armv4_5_common_t
*armv4_5
;
1576 arm7_9_common_t
*arm7_9
;
1578 trace_status_t trace_status
;
1580 target
= get_current_target(cmd_ctx
);
1582 if (arm7_9_get_arch_pointers(target
, &armv4_5
, &arm7_9
) != ERROR_OK
)
1584 command_print(cmd_ctx
, "current target isn't an ARM7/ARM9 target");
1588 if (!arm7_9
->etm_ctx
)
1590 command_print(cmd_ctx
, "current target doesn't have an ETM configured");
1593 etm
= arm7_9
->etm_ctx
;
1596 if (etm
->bcd_vers
>= 0x11) {
1599 reg
= etm_reg_lookup(etm
, ETM_STATUS
);
1602 if (etm_get_reg(reg
) == ERROR_OK
) {
1603 unsigned s
= buf_get_u32(reg
->value
, 0, reg
->size
);
1605 command_print(cmd_ctx
, "etm: %s%s%s%s",
1606 /* bit(1) == progbit */
1607 (etm
->bcd_vers
>= 0x12)
1609 ? "disabled" : "enabled")
1611 ((s
& (1 << 3)) && etm
->bcd_vers
>= 0x31)
1612 ? " triggered" : "",
1613 ((s
& (1 << 2)) && etm
->bcd_vers
>= 0x12)
1614 ? " start/stop" : "",
1615 ((s
& (1 << 0)) && etm
->bcd_vers
>= 0x11)
1616 ? " untraced-overflow" : "");
1617 } /* else ignore and try showing trace port status */
1620 /* Trace Port Driver status */
1621 trace_status
= etm
->capture_driver
->status(etm
);
1622 if (trace_status
== TRACE_IDLE
)
1624 command_print(cmd_ctx
, "%s: idle", etm
->capture_driver
->name
);
1628 static char *completed
= " completed";
1629 static char *running
= " is running";
1630 static char *overflowed
= ", overflowed";
1631 static char *triggered
= ", triggered";
1633 command_print(cmd_ctx
, "%s: trace collection%s%s%s",
1634 etm
->capture_driver
->name
,
1635 (trace_status
& TRACE_RUNNING
) ? running
: completed
,
1636 (trace_status
& TRACE_OVERFLOWED
) ? overflowed
: "",
1637 (trace_status
& TRACE_TRIGGERED
) ? triggered
: "");
1639 if (etm
->trace_depth
> 0)
1641 command_print(cmd_ctx
, "%i frames of trace data read",
1642 (int)(etm
->trace_depth
));
1649 static int handle_etm_image_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1652 armv4_5_common_t
*armv4_5
;
1653 arm7_9_common_t
*arm7_9
;
1654 etm_context_t
*etm_ctx
;
1658 command_print(cmd_ctx
, "usage: etm image <file> [base address] [type]");
1662 target
= get_current_target(cmd_ctx
);
1664 if (arm7_9_get_arch_pointers(target
, &armv4_5
, &arm7_9
) != ERROR_OK
)
1666 command_print(cmd_ctx
, "current target isn't an ARM7/ARM9 target");
1670 if (!(etm_ctx
= arm7_9
->etm_ctx
))
1672 command_print(cmd_ctx
, "current target doesn't have an ETM configured");
1678 image_close(etm_ctx
->image
);
1679 free(etm_ctx
->image
);
1680 command_print(cmd_ctx
, "previously loaded image found and closed");
1683 etm_ctx
->image
= malloc(sizeof(image_t
));
1684 etm_ctx
->image
->base_address_set
= 0;
1685 etm_ctx
->image
->start_address_set
= 0;
1687 /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
1690 etm_ctx
->image
->base_address_set
= 1;
1691 COMMAND_PARSE_NUMBER(int, args
[1], etm_ctx
->image
->base_address
);
1695 etm_ctx
->image
->base_address_set
= 0;
1698 if (image_open(etm_ctx
->image
, args
[0], (argc
>= 3) ? args
[2] : NULL
) != ERROR_OK
)
1700 free(etm_ctx
->image
);
1701 etm_ctx
->image
= NULL
;
1708 static int handle_etm_dump_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1712 armv4_5_common_t
*armv4_5
;
1713 arm7_9_common_t
*arm7_9
;
1714 etm_context_t
*etm_ctx
;
1719 command_print(cmd_ctx
, "usage: etm dump <file>");
1723 target
= get_current_target(cmd_ctx
);
1725 if (arm7_9_get_arch_pointers(target
, &armv4_5
, &arm7_9
) != ERROR_OK
)
1727 command_print(cmd_ctx
, "current target isn't an ARM7/ARM9 target");
1731 if (!(etm_ctx
= arm7_9
->etm_ctx
))
1733 command_print(cmd_ctx
, "current target doesn't have an ETM configured");
1737 if (etm_ctx
->capture_driver
->status
== TRACE_IDLE
)
1739 command_print(cmd_ctx
, "trace capture wasn't enabled, no trace data captured");
1743 if (etm_ctx
->capture_driver
->status(etm_ctx
) & TRACE_RUNNING
)
1745 /* TODO: if on-the-fly capture is to be supported, this needs to be changed */
1746 command_print(cmd_ctx
, "trace capture not completed");
1750 /* read the trace data if it wasn't read already */
1751 if (etm_ctx
->trace_depth
== 0)
1752 etm_ctx
->capture_driver
->read_trace(etm_ctx
);
1754 if (fileio_open(&file
, args
[0], FILEIO_WRITE
, FILEIO_BINARY
) != ERROR_OK
)
1759 fileio_write_u32(&file
, etm_ctx
->capture_status
);
1760 fileio_write_u32(&file
, etm_ctx
->portmode
);
1761 fileio_write_u32(&file
, etm_ctx
->tracemode
);
1762 fileio_write_u32(&file
, etm_ctx
->trace_depth
);
1764 for (i
= 0; i
< etm_ctx
->trace_depth
; i
++)
1766 fileio_write_u32(&file
, etm_ctx
->trace_data
[i
].pipestat
);
1767 fileio_write_u32(&file
, etm_ctx
->trace_data
[i
].packet
);
1768 fileio_write_u32(&file
, etm_ctx
->trace_data
[i
].flags
);
1771 fileio_close(&file
);
1776 static int handle_etm_load_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1780 armv4_5_common_t
*armv4_5
;
1781 arm7_9_common_t
*arm7_9
;
1782 etm_context_t
*etm_ctx
;
1787 command_print(cmd_ctx
, "usage: etm load <file>");
1791 target
= get_current_target(cmd_ctx
);
1793 if (arm7_9_get_arch_pointers(target
, &armv4_5
, &arm7_9
) != ERROR_OK
)
1795 command_print(cmd_ctx
, "current target isn't an ARM7/ARM9 target");
1799 if (!(etm_ctx
= arm7_9
->etm_ctx
))
1801 command_print(cmd_ctx
, "current target doesn't have an ETM configured");
1805 if (etm_ctx
->capture_driver
->status(etm_ctx
) & TRACE_RUNNING
)
1807 command_print(cmd_ctx
, "trace capture running, stop first");
1811 if (fileio_open(&file
, args
[0], FILEIO_READ
, FILEIO_BINARY
) != ERROR_OK
)
1818 command_print(cmd_ctx
, "size isn't a multiple of 4, no valid trace data");
1819 fileio_close(&file
);
1823 if (etm_ctx
->trace_depth
> 0)
1825 free(etm_ctx
->trace_data
);
1826 etm_ctx
->trace_data
= NULL
;
1831 fileio_read_u32(&file
, &tmp
); etm_ctx
->capture_status
= tmp
;
1832 fileio_read_u32(&file
, &tmp
); etm_ctx
->portmode
= tmp
;
1833 fileio_read_u32(&file
, &tmp
); etm_ctx
->tracemode
= tmp
;
1834 fileio_read_u32(&file
, &etm_ctx
->trace_depth
);
1836 etm_ctx
->trace_data
= malloc(sizeof(etmv1_trace_data_t
) * etm_ctx
->trace_depth
);
1837 if (etm_ctx
->trace_data
== NULL
)
1839 command_print(cmd_ctx
, "not enough memory to perform operation");
1840 fileio_close(&file
);
1844 for (i
= 0; i
< etm_ctx
->trace_depth
; i
++)
1846 uint32_t pipestat
, packet
, flags
;
1847 fileio_read_u32(&file
, &pipestat
);
1848 fileio_read_u32(&file
, &packet
);
1849 fileio_read_u32(&file
, &flags
);
1850 etm_ctx
->trace_data
[i
].pipestat
= pipestat
& 0xff;
1851 etm_ctx
->trace_data
[i
].packet
= packet
& 0xffff;
1852 etm_ctx
->trace_data
[i
].flags
= flags
;
1855 fileio_close(&file
);
1860 static int handle_etm_trigger_percent_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1863 armv4_5_common_t
*armv4_5
;
1864 arm7_9_common_t
*arm7_9
;
1865 etm_context_t
*etm_ctx
;
1867 target
= get_current_target(cmd_ctx
);
1869 if (arm7_9_get_arch_pointers(target
, &armv4_5
, &arm7_9
) != ERROR_OK
)
1871 command_print(cmd_ctx
, "current target isn't an ARM7/ARM9 target");
1875 if (!(etm_ctx
= arm7_9
->etm_ctx
))
1877 command_print(cmd_ctx
, "current target doesn't have an ETM configured");
1884 COMMAND_PARSE_NUMBER(u32
, args
[0], new_value
);
1886 if ((new_value
< 2) || (new_value
> 100))
1888 command_print(cmd_ctx
, "valid settings are 2%% to 100%%");
1892 etm_ctx
->trigger_percent
= new_value
;
1896 command_print(cmd_ctx
, "%i percent of the tracebuffer reserved for after the trigger", ((int)(etm_ctx
->trigger_percent
)));
1901 static int handle_etm_start_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1904 armv4_5_common_t
*armv4_5
;
1905 arm7_9_common_t
*arm7_9
;
1906 etm_context_t
*etm_ctx
;
1907 reg_t
*etm_ctrl_reg
;
1909 target
= get_current_target(cmd_ctx
);
1911 if (arm7_9_get_arch_pointers(target
, &armv4_5
, &arm7_9
) != ERROR_OK
)
1913 command_print(cmd_ctx
, "current target isn't an ARM7/ARM9 target");
1917 if (!(etm_ctx
= arm7_9
->etm_ctx
))
1919 command_print(cmd_ctx
, "current target doesn't have an ETM configured");
1923 /* invalidate old tracing data */
1924 arm7_9
->etm_ctx
->capture_status
= TRACE_IDLE
;
1925 if (arm7_9
->etm_ctx
->trace_depth
> 0)
1927 free(arm7_9
->etm_ctx
->trace_data
);
1928 arm7_9
->etm_ctx
->trace_data
= NULL
;
1930 arm7_9
->etm_ctx
->trace_depth
= 0;
1932 etm_ctrl_reg
= etm_reg_lookup(etm_ctx
, ETM_CTRL
);
1936 etm_get_reg(etm_ctrl_reg
);
1938 /* Clear programming bit (10), set port selection bit (11) */
1939 buf_set_u32(etm_ctrl_reg
->value
, 10, 2, 0x2);
1941 etm_store_reg(etm_ctrl_reg
);
1942 jtag_execute_queue();
1944 etm_ctx
->capture_driver
->start_capture(etm_ctx
);
1949 static int handle_etm_stop_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1952 armv4_5_common_t
*armv4_5
;
1953 arm7_9_common_t
*arm7_9
;
1954 etm_context_t
*etm_ctx
;
1955 reg_t
*etm_ctrl_reg
;
1957 target
= get_current_target(cmd_ctx
);
1959 if (arm7_9_get_arch_pointers(target
, &armv4_5
, &arm7_9
) != ERROR_OK
)
1961 command_print(cmd_ctx
, "current target isn't an ARM7/ARM9 target");
1965 if (!(etm_ctx
= arm7_9
->etm_ctx
))
1967 command_print(cmd_ctx
, "current target doesn't have an ETM configured");
1971 etm_ctrl_reg
= etm_reg_lookup(etm_ctx
, ETM_CTRL
);
1975 etm_get_reg(etm_ctrl_reg
);
1977 /* Set programming bit (10), clear port selection bit (11) */
1978 buf_set_u32(etm_ctrl_reg
->value
, 10, 2, 0x1);
1980 etm_store_reg(etm_ctrl_reg
);
1981 jtag_execute_queue();
1983 etm_ctx
->capture_driver
->stop_capture(etm_ctx
);
1988 static int handle_etm_analyze_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1991 armv4_5_common_t
*armv4_5
;
1992 arm7_9_common_t
*arm7_9
;
1993 etm_context_t
*etm_ctx
;
1996 target
= get_current_target(cmd_ctx
);
1998 if (arm7_9_get_arch_pointers(target
, &armv4_5
, &arm7_9
) != ERROR_OK
)
2000 command_print(cmd_ctx
, "current target isn't an ARM7/ARM9 target");
2004 if (!(etm_ctx
= arm7_9
->etm_ctx
))
2006 command_print(cmd_ctx
, "current target doesn't have an ETM configured");
2010 if ((retval
= etmv1_analyze_trace(etm_ctx
, cmd_ctx
)) != ERROR_OK
)
2014 case ERROR_ETM_ANALYSIS_FAILED
:
2015 command_print(cmd_ctx
, "further analysis failed (corrupted trace data or just end of data");
2017 case ERROR_TRACE_INSTRUCTION_UNAVAILABLE
:
2018 command_print(cmd_ctx
, "no instruction for current address available, analysis aborted");
2020 case ERROR_TRACE_IMAGE_UNAVAILABLE
:
2021 command_print(cmd_ctx
, "no image available for trace analysis");
2024 command_print(cmd_ctx
, "unknown error: %i", retval
);
2031 int etm_register_commands(struct command_context_s
*cmd_ctx
)
2033 etm_cmd
= register_command(cmd_ctx
, NULL
, "etm", NULL
, COMMAND_ANY
, "Embedded Trace Macrocell");
2035 register_command(cmd_ctx
, etm_cmd
, "config", handle_etm_config_command
,
2036 COMMAND_CONFIG
, "etm config <target> <port_width> <port_mode> <clocking> <capture_driver>");
2041 static int etm_register_user_commands(struct command_context_s
*cmd_ctx
)
2043 register_command(cmd_ctx
, etm_cmd
, "tracemode", handle_etm_tracemode_command
,
2044 COMMAND_EXEC
, "configure/display trace mode: "
2045 "<none | data | address | all> "
2046 "<context_id_bits> <cycle_accurate> <branch_output>");
2048 register_command(cmd_ctx
, etm_cmd
, "info", handle_etm_info_command
,
2049 COMMAND_EXEC
, "display info about the current target's ETM");
2051 register_command(cmd_ctx
, etm_cmd
, "trigger_percent", handle_etm_trigger_percent_command
,
2052 COMMAND_EXEC
, "amount (<percent>) of trace buffer to be filled after the trigger occured");
2053 register_command(cmd_ctx
, etm_cmd
, "status", handle_etm_status_command
,
2054 COMMAND_EXEC
, "display current target's ETM status");
2055 register_command(cmd_ctx
, etm_cmd
, "start", handle_etm_start_command
,
2056 COMMAND_EXEC
, "start ETM trace collection");
2057 register_command(cmd_ctx
, etm_cmd
, "stop", handle_etm_stop_command
,
2058 COMMAND_EXEC
, "stop ETM trace collection");
2060 register_command(cmd_ctx
, etm_cmd
, "analyze", handle_etm_analyze_command
,
2061 COMMAND_EXEC
, "anaylze collected ETM trace");
2063 register_command(cmd_ctx
, etm_cmd
, "image", handle_etm_image_command
,
2064 COMMAND_EXEC
, "load image from <file> [base address]");
2066 register_command(cmd_ctx
, etm_cmd
, "dump", handle_etm_dump_command
,
2067 COMMAND_EXEC
, "dump captured trace data <file>");
2068 register_command(cmd_ctx
, etm_cmd
, "load", handle_etm_load_command
,
2069 COMMAND_EXEC
, "load trace data for analysis <file>");
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