1 // SPDX-License-Identifier: GPL-2.0-or-later
3 /***************************************************************************
4 * Copyright (C) 2015 by David Ung *
6 ***************************************************************************/
12 #include "breakpoints.h"
14 #include "a64_disassembler.h"
16 #include "target_request.h"
17 #include "target_type.h"
18 #include "armv8_opcodes.h"
19 #include "armv8_cache.h"
20 #include "arm_coresight.h"
21 #include "arm_semihosting.h"
22 #include "jtag/interface.h"
24 #include <helper/nvp.h>
25 #include <helper/time_support.h>
37 struct aarch64_private_config
{
38 struct adiv5_private_config adiv5_config
;
42 static int aarch64_poll(struct target
*target
);
43 static int aarch64_debug_entry(struct target
*target
);
44 static int aarch64_restore_context(struct target
*target
, bool bpwp
);
45 static int aarch64_set_breakpoint(struct target
*target
,
46 struct breakpoint
*breakpoint
, uint8_t matchmode
);
47 static int aarch64_set_context_breakpoint(struct target
*target
,
48 struct breakpoint
*breakpoint
, uint8_t matchmode
);
49 static int aarch64_set_hybrid_breakpoint(struct target
*target
,
50 struct breakpoint
*breakpoint
);
51 static int aarch64_unset_breakpoint(struct target
*target
,
52 struct breakpoint
*breakpoint
);
53 static int aarch64_mmu(struct target
*target
, int *enabled
);
54 static int aarch64_virt2phys(struct target
*target
,
55 target_addr_t virt
, target_addr_t
*phys
);
56 static int aarch64_read_cpu_memory(struct target
*target
,
57 uint64_t address
, uint32_t size
, uint32_t count
, uint8_t *buffer
);
59 static int aarch64_restore_system_control_reg(struct target
*target
)
61 enum arm_mode target_mode
= ARM_MODE_ANY
;
62 int retval
= ERROR_OK
;
65 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
66 struct armv8_common
*armv8
= target_to_armv8(target
);
68 if (aarch64
->system_control_reg
!= aarch64
->system_control_reg_curr
) {
69 aarch64
->system_control_reg_curr
= aarch64
->system_control_reg
;
70 /* LOG_INFO("cp15_control_reg: %8.8" PRIx32, cortex_v8->cp15_control_reg); */
72 switch (armv8
->arm
.core_mode
) {
74 target_mode
= ARMV8_64_EL1H
;
78 instr
= ARMV8_MSR_GP(SYSTEM_SCTLR_EL1
, 0);
82 instr
= ARMV8_MSR_GP(SYSTEM_SCTLR_EL2
, 0);
86 instr
= ARMV8_MSR_GP(SYSTEM_SCTLR_EL3
, 0);
96 instr
= ARMV4_5_MCR(15, 0, 0, 1, 0, 0);
100 LOG_ERROR("cannot read system control register in this mode: (%s : 0x%x)",
101 armv8_mode_name(armv8
->arm
.core_mode
), armv8
->arm
.core_mode
);
105 if (target_mode
!= ARM_MODE_ANY
)
106 armv8_dpm_modeswitch(&armv8
->dpm
, target_mode
);
108 retval
= armv8
->dpm
.instr_write_data_r0_64(&armv8
->dpm
, instr
, aarch64
->system_control_reg
);
109 if (retval
!= ERROR_OK
)
112 if (target_mode
!= ARM_MODE_ANY
)
113 armv8_dpm_modeswitch(&armv8
->dpm
, ARM_MODE_ANY
);
119 /* modify system_control_reg in order to enable or disable mmu for :
120 * - virt2phys address conversion
121 * - read or write memory in phys or virt address */
122 static int aarch64_mmu_modify(struct target
*target
, int enable
)
124 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
125 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
126 int retval
= ERROR_OK
;
127 enum arm_mode target_mode
= ARM_MODE_ANY
;
131 /* if mmu enabled at target stop and mmu not enable */
132 if (!(aarch64
->system_control_reg
& 0x1U
)) {
133 LOG_ERROR("trying to enable mmu on target stopped with mmu disable");
136 if (!(aarch64
->system_control_reg_curr
& 0x1U
))
137 aarch64
->system_control_reg_curr
|= 0x1U
;
139 if (aarch64
->system_control_reg_curr
& 0x4U
) {
140 /* data cache is active */
141 aarch64
->system_control_reg_curr
&= ~0x4U
;
142 /* flush data cache armv8 function to be called */
143 if (armv8
->armv8_mmu
.armv8_cache
.flush_all_data_cache
)
144 armv8
->armv8_mmu
.armv8_cache
.flush_all_data_cache(target
);
146 if ((aarch64
->system_control_reg_curr
& 0x1U
)) {
147 aarch64
->system_control_reg_curr
&= ~0x1U
;
151 switch (armv8
->arm
.core_mode
) {
153 target_mode
= ARMV8_64_EL1H
;
157 instr
= ARMV8_MSR_GP(SYSTEM_SCTLR_EL1
, 0);
161 instr
= ARMV8_MSR_GP(SYSTEM_SCTLR_EL2
, 0);
165 instr
= ARMV8_MSR_GP(SYSTEM_SCTLR_EL3
, 0);
175 instr
= ARMV4_5_MCR(15, 0, 0, 1, 0, 0);
179 LOG_DEBUG("unknown cpu state 0x%x", armv8
->arm
.core_mode
);
182 if (target_mode
!= ARM_MODE_ANY
)
183 armv8_dpm_modeswitch(&armv8
->dpm
, target_mode
);
185 retval
= armv8
->dpm
.instr_write_data_r0_64(&armv8
->dpm
, instr
,
186 aarch64
->system_control_reg_curr
);
188 if (target_mode
!= ARM_MODE_ANY
)
189 armv8_dpm_modeswitch(&armv8
->dpm
, ARM_MODE_ANY
);
195 * Basic debug access, very low level assumes state is saved
197 static int aarch64_init_debug_access(struct target
*target
)
199 struct armv8_common
*armv8
= target_to_armv8(target
);
203 LOG_DEBUG("%s", target_name(target
));
205 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
206 armv8
->debug_base
+ CPUV8_DBG_OSLAR
, 0);
207 if (retval
!= ERROR_OK
) {
208 LOG_DEBUG("Examine %s failed", "oslock");
212 /* Clear Sticky Power Down status Bit in PRSR to enable access to
213 the registers in the Core Power Domain */
214 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
215 armv8
->debug_base
+ CPUV8_DBG_PRSR
, &dummy
);
216 if (retval
!= ERROR_OK
)
220 * Static CTI configuration:
221 * Channel 0 -> trigger outputs HALT request to PE
222 * Channel 1 -> trigger outputs Resume request to PE
223 * Gate all channel trigger events from entering the CTM
227 retval
= arm_cti_enable(armv8
->cti
, true);
228 /* By default, gate all channel events to and from the CTM */
229 if (retval
== ERROR_OK
)
230 retval
= arm_cti_write_reg(armv8
->cti
, CTI_GATE
, 0);
231 /* output halt requests to PE on channel 0 event */
232 if (retval
== ERROR_OK
)
233 retval
= arm_cti_write_reg(armv8
->cti
, CTI_OUTEN0
, CTI_CHNL(0));
234 /* output restart requests to PE on channel 1 event */
235 if (retval
== ERROR_OK
)
236 retval
= arm_cti_write_reg(armv8
->cti
, CTI_OUTEN1
, CTI_CHNL(1));
237 if (retval
!= ERROR_OK
)
240 /* Resync breakpoint registers */
245 /* Write to memory mapped registers directly with no cache or mmu handling */
246 static int aarch64_dap_write_memap_register_u32(struct target
*target
,
247 target_addr_t address
,
251 struct armv8_common
*armv8
= target_to_armv8(target
);
253 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
, address
, value
);
258 static int aarch64_dpm_setup(struct aarch64_common
*a8
, uint64_t debug
)
260 struct arm_dpm
*dpm
= &a8
->armv8_common
.dpm
;
263 dpm
->arm
= &a8
->armv8_common
.arm
;
266 retval
= armv8_dpm_setup(dpm
);
267 if (retval
== ERROR_OK
)
268 retval
= armv8_dpm_initialize(dpm
);
273 static int aarch64_set_dscr_bits(struct target
*target
, unsigned long bit_mask
, unsigned long value
)
275 struct armv8_common
*armv8
= target_to_armv8(target
);
276 return armv8_set_dbgreg_bits(armv8
, CPUV8_DBG_DSCR
, bit_mask
, value
);
279 static int aarch64_check_state_one(struct target
*target
,
280 uint32_t mask
, uint32_t val
, int *p_result
, uint32_t *p_prsr
)
282 struct armv8_common
*armv8
= target_to_armv8(target
);
286 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
287 armv8
->debug_base
+ CPUV8_DBG_PRSR
, &prsr
);
288 if (retval
!= ERROR_OK
)
295 *p_result
= (prsr
& mask
) == (val
& mask
);
300 static int aarch64_wait_halt_one(struct target
*target
)
302 int retval
= ERROR_OK
;
305 int64_t then
= timeval_ms();
309 retval
= aarch64_check_state_one(target
, PRSR_HALT
, PRSR_HALT
, &halted
, &prsr
);
310 if (retval
!= ERROR_OK
|| halted
)
313 if (timeval_ms() > then
+ 1000) {
314 retval
= ERROR_TARGET_TIMEOUT
;
315 LOG_DEBUG("target %s timeout, prsr=0x%08"PRIx32
, target_name(target
), prsr
);
322 static int aarch64_prepare_halt_smp(struct target
*target
, bool exc_target
, struct target
**p_first
)
324 int retval
= ERROR_OK
;
325 struct target_list
*head
;
326 struct target
*first
= NULL
;
328 LOG_DEBUG("target %s exc %i", target_name(target
), exc_target
);
330 foreach_smp_target(head
, target
->smp_targets
) {
331 struct target
*curr
= head
->target
;
332 struct armv8_common
*armv8
= target_to_armv8(curr
);
334 if (exc_target
&& curr
== target
)
336 if (!target_was_examined(curr
))
338 if (curr
->state
!= TARGET_RUNNING
)
341 /* HACK: mark this target as prepared for halting */
342 curr
->debug_reason
= DBG_REASON_DBGRQ
;
344 /* open the gate for channel 0 to let HALT requests pass to the CTM */
345 retval
= arm_cti_ungate_channel(armv8
->cti
, 0);
346 if (retval
== ERROR_OK
)
347 retval
= aarch64_set_dscr_bits(curr
, DSCR_HDE
, DSCR_HDE
);
348 if (retval
!= ERROR_OK
)
351 LOG_DEBUG("target %s prepared", target_name(curr
));
358 if (exc_target
&& first
)
367 static int aarch64_halt_one(struct target
*target
, enum halt_mode mode
)
369 int retval
= ERROR_OK
;
370 struct armv8_common
*armv8
= target_to_armv8(target
);
372 LOG_DEBUG("%s", target_name(target
));
374 /* allow Halting Debug Mode */
375 retval
= aarch64_set_dscr_bits(target
, DSCR_HDE
, DSCR_HDE
);
376 if (retval
!= ERROR_OK
)
379 /* trigger an event on channel 0, this outputs a halt request to the PE */
380 retval
= arm_cti_pulse_channel(armv8
->cti
, 0);
381 if (retval
!= ERROR_OK
)
384 if (mode
== HALT_SYNC
) {
385 retval
= aarch64_wait_halt_one(target
);
386 if (retval
!= ERROR_OK
) {
387 if (retval
== ERROR_TARGET_TIMEOUT
)
388 LOG_ERROR("Timeout waiting for target %s halt", target_name(target
));
396 static int aarch64_halt_smp(struct target
*target
, bool exc_target
)
398 struct target
*next
= target
;
401 /* prepare halt on all PEs of the group */
402 retval
= aarch64_prepare_halt_smp(target
, exc_target
, &next
);
404 if (exc_target
&& next
== target
)
407 /* halt the target PE */
408 if (retval
== ERROR_OK
)
409 retval
= aarch64_halt_one(next
, HALT_LAZY
);
411 if (retval
!= ERROR_OK
)
414 /* wait for all PEs to halt */
415 int64_t then
= timeval_ms();
417 bool all_halted
= true;
418 struct target_list
*head
;
421 foreach_smp_target(head
, target
->smp_targets
) {
426 if (!target_was_examined(curr
))
429 retval
= aarch64_check_state_one(curr
, PRSR_HALT
, PRSR_HALT
, &halted
, NULL
);
430 if (retval
!= ERROR_OK
|| !halted
) {
439 if (timeval_ms() > then
+ 1000) {
440 retval
= ERROR_TARGET_TIMEOUT
;
445 * HACK: on Hi6220 there are 8 cores organized in 2 clusters
446 * and it looks like the CTI's are not connected by a common
447 * trigger matrix. It seems that we need to halt one core in each
448 * cluster explicitly. So if we find that a core has not halted
449 * yet, we trigger an explicit halt for the second cluster.
451 retval
= aarch64_halt_one(curr
, HALT_LAZY
);
452 if (retval
!= ERROR_OK
)
459 static int update_halt_gdb(struct target
*target
, enum target_debug_reason debug_reason
)
461 struct target
*gdb_target
= NULL
;
462 struct target_list
*head
;
465 if (debug_reason
== DBG_REASON_NOTHALTED
) {
466 LOG_DEBUG("Halting remaining targets in SMP group");
467 aarch64_halt_smp(target
, true);
470 /* poll all targets in the group, but skip the target that serves GDB */
471 foreach_smp_target(head
, target
->smp_targets
) {
473 /* skip calling context */
476 if (!target_was_examined(curr
))
478 /* skip targets that were already halted */
479 if (curr
->state
== TARGET_HALTED
)
481 /* remember the gdb_service->target */
482 if (curr
->gdb_service
)
483 gdb_target
= curr
->gdb_service
->target
;
485 if (curr
== gdb_target
)
488 /* avoid recursion in aarch64_poll() */
494 /* after all targets were updated, poll the gdb serving target */
495 if (gdb_target
&& gdb_target
!= target
)
496 aarch64_poll(gdb_target
);
502 * Aarch64 Run control
505 static int aarch64_poll(struct target
*target
)
507 enum target_state prev_target_state
;
508 int retval
= ERROR_OK
;
511 retval
= aarch64_check_state_one(target
,
512 PRSR_HALT
, PRSR_HALT
, &halted
, NULL
);
513 if (retval
!= ERROR_OK
)
517 prev_target_state
= target
->state
;
518 if (prev_target_state
!= TARGET_HALTED
) {
519 enum target_debug_reason debug_reason
= target
->debug_reason
;
521 /* We have a halting debug event */
522 target
->state
= TARGET_HALTED
;
523 LOG_DEBUG("Target %s halted", target_name(target
));
524 retval
= aarch64_debug_entry(target
);
525 if (retval
!= ERROR_OK
)
529 update_halt_gdb(target
, debug_reason
);
531 if (arm_semihosting(target
, &retval
) != 0)
534 switch (prev_target_state
) {
538 target_call_event_callbacks(target
, TARGET_EVENT_HALTED
);
540 case TARGET_DEBUG_RUNNING
:
541 target_call_event_callbacks(target
, TARGET_EVENT_DEBUG_HALTED
);
548 target
->state
= TARGET_RUNNING
;
553 static int aarch64_halt(struct target
*target
)
555 struct armv8_common
*armv8
= target_to_armv8(target
);
556 armv8
->last_run_control_op
= ARMV8_RUNCONTROL_HALT
;
559 return aarch64_halt_smp(target
, false);
561 return aarch64_halt_one(target
, HALT_SYNC
);
564 static int aarch64_restore_one(struct target
*target
, int current
,
565 uint64_t *address
, int handle_breakpoints
, int debug_execution
)
567 struct armv8_common
*armv8
= target_to_armv8(target
);
568 struct arm
*arm
= &armv8
->arm
;
572 LOG_DEBUG("%s", target_name(target
));
574 if (!debug_execution
)
575 target_free_all_working_areas(target
);
577 /* current = 1: continue on current pc, otherwise continue at <address> */
578 resume_pc
= buf_get_u64(arm
->pc
->value
, 0, 64);
580 resume_pc
= *address
;
582 *address
= resume_pc
;
584 /* Make sure that the Armv7 gdb thumb fixups does not
585 * kill the return address
587 switch (arm
->core_state
) {
589 resume_pc
&= 0xFFFFFFFC;
591 case ARM_STATE_AARCH64
:
592 resume_pc
&= 0xFFFFFFFFFFFFFFFCULL
;
594 case ARM_STATE_THUMB
:
595 case ARM_STATE_THUMB_EE
:
596 /* When the return address is loaded into PC
597 * bit 0 must be 1 to stay in Thumb state
601 case ARM_STATE_JAZELLE
:
602 LOG_ERROR("How do I resume into Jazelle state??");
605 LOG_DEBUG("resume pc = 0x%016" PRIx64
, resume_pc
);
606 buf_set_u64(arm
->pc
->value
, 0, 64, resume_pc
);
607 arm
->pc
->dirty
= true;
608 arm
->pc
->valid
= true;
610 /* called it now before restoring context because it uses cpu
611 * register r0 for restoring system control register */
612 retval
= aarch64_restore_system_control_reg(target
);
613 if (retval
== ERROR_OK
)
614 retval
= aarch64_restore_context(target
, handle_breakpoints
);
620 * prepare single target for restart
624 static int aarch64_prepare_restart_one(struct target
*target
)
626 struct armv8_common
*armv8
= target_to_armv8(target
);
631 LOG_DEBUG("%s", target_name(target
));
633 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
634 armv8
->debug_base
+ CPUV8_DBG_DSCR
, &dscr
);
635 if (retval
!= ERROR_OK
)
638 if ((dscr
& DSCR_ITE
) == 0)
639 LOG_ERROR("DSCR.ITE must be set before leaving debug!");
640 if ((dscr
& DSCR_ERR
) != 0)
641 LOG_ERROR("DSCR.ERR must be cleared before leaving debug!");
643 /* acknowledge a pending CTI halt event */
644 retval
= arm_cti_ack_events(armv8
->cti
, CTI_TRIG(HALT
));
646 * open the CTI gate for channel 1 so that the restart events
647 * get passed along to all PEs. Also close gate for channel 0
648 * to isolate the PE from halt events.
650 if (retval
== ERROR_OK
)
651 retval
= arm_cti_ungate_channel(armv8
->cti
, 1);
652 if (retval
== ERROR_OK
)
653 retval
= arm_cti_gate_channel(armv8
->cti
, 0);
655 /* make sure that DSCR.HDE is set */
656 if (retval
== ERROR_OK
) {
658 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
659 armv8
->debug_base
+ CPUV8_DBG_DSCR
, dscr
);
662 if (retval
== ERROR_OK
) {
663 /* clear sticky bits in PRSR, SDR is now 0 */
664 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
665 armv8
->debug_base
+ CPUV8_DBG_PRSR
, &tmp
);
671 static int aarch64_do_restart_one(struct target
*target
, enum restart_mode mode
)
673 struct armv8_common
*armv8
= target_to_armv8(target
);
676 LOG_DEBUG("%s", target_name(target
));
678 /* trigger an event on channel 1, generates a restart request to the PE */
679 retval
= arm_cti_pulse_channel(armv8
->cti
, 1);
680 if (retval
!= ERROR_OK
)
683 if (mode
== RESTART_SYNC
) {
684 int64_t then
= timeval_ms();
688 * if PRSR.SDR is set now, the target did restart, even
689 * if it's now already halted again (e.g. due to breakpoint)
691 retval
= aarch64_check_state_one(target
,
692 PRSR_SDR
, PRSR_SDR
, &resumed
, NULL
);
693 if (retval
!= ERROR_OK
|| resumed
)
696 if (timeval_ms() > then
+ 1000) {
697 LOG_ERROR("%s: Timeout waiting for resume"PRIx32
, target_name(target
));
698 retval
= ERROR_TARGET_TIMEOUT
;
704 if (retval
!= ERROR_OK
)
707 target
->debug_reason
= DBG_REASON_NOTHALTED
;
708 target
->state
= TARGET_RUNNING
;
713 static int aarch64_restart_one(struct target
*target
, enum restart_mode mode
)
717 LOG_DEBUG("%s", target_name(target
));
719 retval
= aarch64_prepare_restart_one(target
);
720 if (retval
== ERROR_OK
)
721 retval
= aarch64_do_restart_one(target
, mode
);
727 * prepare all but the current target for restart
729 static int aarch64_prep_restart_smp(struct target
*target
, int handle_breakpoints
, struct target
**p_first
)
731 int retval
= ERROR_OK
;
732 struct target_list
*head
;
733 struct target
*first
= NULL
;
736 foreach_smp_target(head
, target
->smp_targets
) {
737 struct target
*curr
= head
->target
;
739 /* skip calling target */
742 if (!target_was_examined(curr
))
744 if (curr
->state
!= TARGET_HALTED
)
747 /* resume at current address, not in step mode */
748 retval
= aarch64_restore_one(curr
, 1, &address
, handle_breakpoints
, 0);
749 if (retval
== ERROR_OK
)
750 retval
= aarch64_prepare_restart_one(curr
);
751 if (retval
!= ERROR_OK
) {
752 LOG_ERROR("failed to restore target %s", target_name(curr
));
755 /* remember the first valid target in the group */
767 static int aarch64_step_restart_smp(struct target
*target
)
769 int retval
= ERROR_OK
;
770 struct target_list
*head
;
771 struct target
*first
= NULL
;
773 LOG_DEBUG("%s", target_name(target
));
775 retval
= aarch64_prep_restart_smp(target
, 0, &first
);
776 if (retval
!= ERROR_OK
)
780 retval
= aarch64_do_restart_one(first
, RESTART_LAZY
);
781 if (retval
!= ERROR_OK
) {
782 LOG_DEBUG("error restarting target %s", target_name(first
));
786 int64_t then
= timeval_ms();
788 struct target
*curr
= target
;
789 bool all_resumed
= true;
791 foreach_smp_target(head
, target
->smp_targets
) {
800 if (!target_was_examined(curr
))
803 retval
= aarch64_check_state_one(curr
,
804 PRSR_SDR
, PRSR_SDR
, &resumed
, &prsr
);
805 if (retval
!= ERROR_OK
|| (!resumed
&& (prsr
& PRSR_HALT
))) {
810 if (curr
->state
!= TARGET_RUNNING
) {
811 curr
->state
= TARGET_RUNNING
;
812 curr
->debug_reason
= DBG_REASON_NOTHALTED
;
813 target_call_event_callbacks(curr
, TARGET_EVENT_RESUMED
);
820 if (timeval_ms() > then
+ 1000) {
821 LOG_ERROR("%s: timeout waiting for target resume", __func__
);
822 retval
= ERROR_TARGET_TIMEOUT
;
826 * HACK: on Hi6220 there are 8 cores organized in 2 clusters
827 * and it looks like the CTI's are not connected by a common
828 * trigger matrix. It seems that we need to halt one core in each
829 * cluster explicitly. So if we find that a core has not halted
830 * yet, we trigger an explicit resume for the second cluster.
832 retval
= aarch64_do_restart_one(curr
, RESTART_LAZY
);
833 if (retval
!= ERROR_OK
)
840 static int aarch64_resume(struct target
*target
, int current
,
841 target_addr_t address
, int handle_breakpoints
, int debug_execution
)
844 uint64_t addr
= address
;
846 struct armv8_common
*armv8
= target_to_armv8(target
);
847 armv8
->last_run_control_op
= ARMV8_RUNCONTROL_RESUME
;
849 if (target
->state
!= TARGET_HALTED
) {
850 LOG_TARGET_ERROR(target
, "not halted");
851 return ERROR_TARGET_NOT_HALTED
;
855 * If this target is part of a SMP group, prepare the others
856 * targets for resuming. This involves restoring the complete
857 * target register context and setting up CTI gates to accept
858 * resume events from the trigger matrix.
861 retval
= aarch64_prep_restart_smp(target
, handle_breakpoints
, NULL
);
862 if (retval
!= ERROR_OK
)
866 /* all targets prepared, restore and restart the current target */
867 retval
= aarch64_restore_one(target
, current
, &addr
, handle_breakpoints
,
869 if (retval
== ERROR_OK
)
870 retval
= aarch64_restart_one(target
, RESTART_SYNC
);
871 if (retval
!= ERROR_OK
)
875 int64_t then
= timeval_ms();
877 struct target
*curr
= target
;
878 struct target_list
*head
;
879 bool all_resumed
= true;
881 foreach_smp_target(head
, target
->smp_targets
) {
888 if (!target_was_examined(curr
))
891 retval
= aarch64_check_state_one(curr
,
892 PRSR_SDR
, PRSR_SDR
, &resumed
, &prsr
);
893 if (retval
!= ERROR_OK
|| (!resumed
&& (prsr
& PRSR_HALT
))) {
898 if (curr
->state
!= TARGET_RUNNING
) {
899 curr
->state
= TARGET_RUNNING
;
900 curr
->debug_reason
= DBG_REASON_NOTHALTED
;
901 target_call_event_callbacks(curr
, TARGET_EVENT_RESUMED
);
908 if (timeval_ms() > then
+ 1000) {
909 LOG_ERROR("%s: timeout waiting for target %s to resume", __func__
, target_name(curr
));
910 retval
= ERROR_TARGET_TIMEOUT
;
915 * HACK: on Hi6220 there are 8 cores organized in 2 clusters
916 * and it looks like the CTI's are not connected by a common
917 * trigger matrix. It seems that we need to halt one core in each
918 * cluster explicitly. So if we find that a core has not halted
919 * yet, we trigger an explicit resume for the second cluster.
921 retval
= aarch64_do_restart_one(curr
, RESTART_LAZY
);
922 if (retval
!= ERROR_OK
)
927 if (retval
!= ERROR_OK
)
930 target
->debug_reason
= DBG_REASON_NOTHALTED
;
932 if (!debug_execution
) {
933 target
->state
= TARGET_RUNNING
;
934 target_call_event_callbacks(target
, TARGET_EVENT_RESUMED
);
935 LOG_DEBUG("target resumed at 0x%" PRIx64
, addr
);
937 target
->state
= TARGET_DEBUG_RUNNING
;
938 target_call_event_callbacks(target
, TARGET_EVENT_DEBUG_RESUMED
);
939 LOG_DEBUG("target debug resumed at 0x%" PRIx64
, addr
);
945 static int aarch64_debug_entry(struct target
*target
)
947 int retval
= ERROR_OK
;
948 struct armv8_common
*armv8
= target_to_armv8(target
);
949 struct arm_dpm
*dpm
= &armv8
->dpm
;
950 enum arm_state core_state
;
953 /* make sure to clear all sticky errors */
954 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
955 armv8
->debug_base
+ CPUV8_DBG_DRCR
, DRCR_CSE
);
956 if (retval
== ERROR_OK
)
957 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
958 armv8
->debug_base
+ CPUV8_DBG_DSCR
, &dscr
);
959 if (retval
== ERROR_OK
)
960 retval
= arm_cti_ack_events(armv8
->cti
, CTI_TRIG(HALT
));
962 if (retval
!= ERROR_OK
)
965 LOG_DEBUG("%s dscr = 0x%08" PRIx32
, target_name(target
), dscr
);
968 core_state
= armv8_dpm_get_core_state(dpm
);
969 armv8_select_opcodes(armv8
, core_state
== ARM_STATE_AARCH64
);
970 armv8_select_reg_access(armv8
, core_state
== ARM_STATE_AARCH64
);
972 /* close the CTI gate for all events */
973 if (retval
== ERROR_OK
)
974 retval
= arm_cti_write_reg(armv8
->cti
, CTI_GATE
, 0);
975 /* discard async exceptions */
976 if (retval
== ERROR_OK
)
977 retval
= dpm
->instr_cpsr_sync(dpm
);
978 if (retval
!= ERROR_OK
)
981 /* Examine debug reason */
982 armv8_dpm_report_dscr(dpm
, dscr
);
984 /* save the memory address that triggered the watchpoint */
985 if (target
->debug_reason
== DBG_REASON_WATCHPOINT
) {
988 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
989 armv8
->debug_base
+ CPUV8_DBG_EDWAR0
, &tmp
);
990 if (retval
!= ERROR_OK
)
992 target_addr_t edwar
= tmp
;
994 /* EDWAR[63:32] has unknown content in aarch32 state */
995 if (core_state
== ARM_STATE_AARCH64
) {
996 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
997 armv8
->debug_base
+ CPUV8_DBG_EDWAR1
, &tmp
);
998 if (retval
!= ERROR_OK
)
1000 edwar
|= ((target_addr_t
)tmp
) << 32;
1003 armv8
->dpm
.wp_addr
= edwar
;
1006 retval
= armv8_dpm_read_current_registers(&armv8
->dpm
);
1008 if (retval
== ERROR_OK
&& armv8
->post_debug_entry
)
1009 retval
= armv8
->post_debug_entry(target
);
1014 static int aarch64_post_debug_entry(struct target
*target
)
1016 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1017 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
1019 enum arm_mode target_mode
= ARM_MODE_ANY
;
1022 switch (armv8
->arm
.core_mode
) {
1024 target_mode
= ARMV8_64_EL1H
;
1028 instr
= ARMV8_MRS(SYSTEM_SCTLR_EL1
, 0);
1032 instr
= ARMV8_MRS(SYSTEM_SCTLR_EL2
, 0);
1036 instr
= ARMV8_MRS(SYSTEM_SCTLR_EL3
, 0);
1046 instr
= ARMV4_5_MRC(15, 0, 0, 1, 0, 0);
1050 LOG_ERROR("cannot read system control register in this mode: (%s : 0x%x)",
1051 armv8_mode_name(armv8
->arm
.core_mode
), armv8
->arm
.core_mode
);
1055 if (target_mode
!= ARM_MODE_ANY
)
1056 armv8_dpm_modeswitch(&armv8
->dpm
, target_mode
);
1058 retval
= armv8
->dpm
.instr_read_data_r0_64(&armv8
->dpm
, instr
, &aarch64
->system_control_reg
);
1059 if (retval
!= ERROR_OK
)
1062 if (target_mode
!= ARM_MODE_ANY
)
1063 armv8_dpm_modeswitch(&armv8
->dpm
, ARM_MODE_ANY
);
1065 LOG_DEBUG("System_register: %8.8" PRIx64
, aarch64
->system_control_reg
);
1066 aarch64
->system_control_reg_curr
= aarch64
->system_control_reg
;
1068 if (armv8
->armv8_mmu
.armv8_cache
.info
== -1) {
1069 armv8_identify_cache(armv8
);
1070 armv8_read_mpidr(armv8
);
1072 if (armv8
->is_armv8r
) {
1073 armv8
->armv8_mmu
.mmu_enabled
= 0;
1075 armv8
->armv8_mmu
.mmu_enabled
=
1076 (aarch64
->system_control_reg
& 0x1U
) ? 1 : 0;
1078 armv8
->armv8_mmu
.armv8_cache
.d_u_cache_enabled
=
1079 (aarch64
->system_control_reg
& 0x4U
) ? 1 : 0;
1080 armv8
->armv8_mmu
.armv8_cache
.i_cache_enabled
=
1081 (aarch64
->system_control_reg
& 0x1000U
) ? 1 : 0;
1086 * single-step a target
1088 static int aarch64_step(struct target
*target
, int current
, target_addr_t address
,
1089 int handle_breakpoints
)
1091 struct armv8_common
*armv8
= target_to_armv8(target
);
1092 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1093 int saved_retval
= ERROR_OK
;
1098 armv8
->last_run_control_op
= ARMV8_RUNCONTROL_STEP
;
1100 if (target
->state
!= TARGET_HALTED
) {
1101 LOG_TARGET_ERROR(target
, "not halted");
1102 return ERROR_TARGET_NOT_HALTED
;
1105 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
1106 armv8
->debug_base
+ CPUV8_DBG_EDECR
, &edecr
);
1107 /* make sure EDECR.SS is not set when restoring the register */
1109 if (retval
== ERROR_OK
) {
1111 /* set EDECR.SS to enter hardware step mode */
1112 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
1113 armv8
->debug_base
+ CPUV8_DBG_EDECR
, (edecr
|0x4));
1115 /* disable interrupts while stepping */
1116 if (retval
== ERROR_OK
&& aarch64
->isrmasking_mode
== AARCH64_ISRMASK_ON
)
1117 retval
= aarch64_set_dscr_bits(target
, 0x3 << 22, 0x3 << 22);
1118 /* bail out if stepping setup has failed */
1119 if (retval
!= ERROR_OK
)
1122 if (target
->smp
&& (current
== 1)) {
1124 * isolate current target so that it doesn't get resumed
1125 * together with the others
1127 retval
= arm_cti_gate_channel(armv8
->cti
, 1);
1128 /* resume all other targets in the group */
1129 if (retval
== ERROR_OK
)
1130 retval
= aarch64_step_restart_smp(target
);
1131 if (retval
!= ERROR_OK
) {
1132 LOG_ERROR("Failed to restart non-stepping targets in SMP group");
1135 LOG_DEBUG("Restarted all non-stepping targets in SMP group");
1138 /* all other targets running, restore and restart the current target */
1139 retval
= aarch64_restore_one(target
, current
, &address
, 0, 0);
1140 if (retval
== ERROR_OK
)
1141 retval
= aarch64_restart_one(target
, RESTART_LAZY
);
1143 if (retval
!= ERROR_OK
)
1146 LOG_DEBUG("target step-resumed at 0x%" PRIx64
, address
);
1147 if (!handle_breakpoints
)
1148 target_call_event_callbacks(target
, TARGET_EVENT_RESUMED
);
1150 int64_t then
= timeval_ms();
1155 retval
= aarch64_check_state_one(target
,
1156 PRSR_SDR
|PRSR_HALT
, PRSR_SDR
|PRSR_HALT
, &stepped
, &prsr
);
1157 if (retval
!= ERROR_OK
|| stepped
)
1160 if (timeval_ms() > then
+ 100) {
1161 LOG_ERROR("timeout waiting for target %s halt after step",
1162 target_name(target
));
1163 retval
= ERROR_TARGET_TIMEOUT
;
1169 * At least on one SoC (Renesas R8A7795) stepping over a WFI instruction
1170 * causes a timeout. The core takes the step but doesn't complete it and so
1171 * debug state is never entered. However, you can manually halt the core
1172 * as an external debug even is also a WFI wakeup event.
1174 if (retval
== ERROR_TARGET_TIMEOUT
)
1175 saved_retval
= aarch64_halt_one(target
, HALT_SYNC
);
1177 poll_retval
= aarch64_poll(target
);
1180 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
1181 armv8
->debug_base
+ CPUV8_DBG_EDECR
, edecr
);
1182 if (retval
!= ERROR_OK
)
1185 /* restore interrupts */
1186 if (aarch64
->isrmasking_mode
== AARCH64_ISRMASK_ON
) {
1187 retval
= aarch64_set_dscr_bits(target
, 0x3 << 22, 0);
1188 if (retval
!= ERROR_OK
)
1192 if (saved_retval
!= ERROR_OK
)
1193 return saved_retval
;
1195 if (poll_retval
!= ERROR_OK
)
1201 static int aarch64_restore_context(struct target
*target
, bool bpwp
)
1203 struct armv8_common
*armv8
= target_to_armv8(target
);
1204 struct arm
*arm
= &armv8
->arm
;
1208 LOG_DEBUG("%s", target_name(target
));
1210 if (armv8
->pre_restore_context
)
1211 armv8
->pre_restore_context(target
);
1213 retval
= armv8_dpm_write_dirty_registers(&armv8
->dpm
, bpwp
);
1214 if (retval
== ERROR_OK
) {
1215 /* registers are now invalid */
1216 register_cache_invalidate(arm
->core_cache
);
1217 register_cache_invalidate(arm
->core_cache
->next
);
1224 * Cortex-A8 Breakpoint and watchpoint functions
1227 /* Setup hardware Breakpoint Register Pair */
1228 static int aarch64_set_breakpoint(struct target
*target
,
1229 struct breakpoint
*breakpoint
, uint8_t matchmode
)
1234 uint8_t byte_addr_select
= 0x0F;
1235 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1236 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
1237 struct aarch64_brp
*brp_list
= aarch64
->brp_list
;
1239 if (breakpoint
->is_set
) {
1240 LOG_WARNING("breakpoint already set");
1244 if (breakpoint
->type
== BKPT_HARD
) {
1246 while (brp_list
[brp_i
].used
&& (brp_i
< aarch64
->brp_num
))
1248 if (brp_i
>= aarch64
->brp_num
) {
1249 LOG_ERROR("ERROR Can not find free Breakpoint Register Pair");
1250 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1252 breakpoint_hw_set(breakpoint
, brp_i
);
1253 if (breakpoint
->length
== 2)
1254 byte_addr_select
= (3 << (breakpoint
->address
& 0x02));
1255 control
= ((matchmode
& 0x7) << 20)
1257 | (byte_addr_select
<< 5)
1259 brp_list
[brp_i
].used
= 1;
1260 brp_list
[brp_i
].value
= breakpoint
->address
& 0xFFFFFFFFFFFFFFFCULL
;
1261 brp_list
[brp_i
].control
= control
;
1262 bpt_value
= brp_list
[brp_i
].value
;
1264 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1265 + CPUV8_DBG_BVR_BASE
+ 16 * brp_list
[brp_i
].brpn
,
1266 (uint32_t)(bpt_value
& 0xFFFFFFFF));
1267 if (retval
!= ERROR_OK
)
1269 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1270 + CPUV8_DBG_BVR_BASE
+ 4 + 16 * brp_list
[brp_i
].brpn
,
1271 (uint32_t)(bpt_value
>> 32));
1272 if (retval
!= ERROR_OK
)
1275 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1276 + CPUV8_DBG_BCR_BASE
+ 16 * brp_list
[brp_i
].brpn
,
1277 brp_list
[brp_i
].control
);
1278 if (retval
!= ERROR_OK
)
1280 LOG_DEBUG("brp %i control 0x%0" PRIx32
" value 0x%" TARGET_PRIxADDR
, brp_i
,
1281 brp_list
[brp_i
].control
,
1282 brp_list
[brp_i
].value
);
1284 } else if (breakpoint
->type
== BKPT_SOFT
) {
1288 if (armv8_dpm_get_core_state(&armv8
->dpm
) == ARM_STATE_AARCH64
) {
1289 opcode
= ARMV8_HLT(11);
1291 if (breakpoint
->length
!= 4)
1292 LOG_ERROR("bug: breakpoint length should be 4 in AArch64 mode");
1295 * core_state is ARM_STATE_ARM
1296 * in that case the opcode depends on breakpoint length:
1297 * - if length == 4 => A32 opcode
1298 * - if length == 2 => T32 opcode
1299 * - if length == 3 => T32 opcode (refer to gdb doc : ARM-Breakpoint-Kinds)
1300 * in that case the length should be changed from 3 to 4 bytes
1302 opcode
= (breakpoint
->length
== 4) ? ARMV8_HLT_A1(11) :
1303 (uint32_t) (ARMV8_HLT_T1(11) | ARMV8_HLT_T1(11) << 16);
1305 if (breakpoint
->length
== 3)
1306 breakpoint
->length
= 4;
1309 buf_set_u32(code
, 0, 32, opcode
);
1311 retval
= target_read_memory(target
,
1312 breakpoint
->address
& 0xFFFFFFFFFFFFFFFEULL
,
1313 breakpoint
->length
, 1,
1314 breakpoint
->orig_instr
);
1315 if (retval
!= ERROR_OK
)
1318 armv8_cache_d_inner_flush_virt(armv8
,
1319 breakpoint
->address
& 0xFFFFFFFFFFFFFFFEULL
,
1320 breakpoint
->length
);
1322 retval
= target_write_memory(target
,
1323 breakpoint
->address
& 0xFFFFFFFFFFFFFFFEULL
,
1324 breakpoint
->length
, 1, code
);
1325 if (retval
!= ERROR_OK
)
1328 armv8_cache_d_inner_flush_virt(armv8
,
1329 breakpoint
->address
& 0xFFFFFFFFFFFFFFFEULL
,
1330 breakpoint
->length
);
1332 armv8_cache_i_inner_inval_virt(armv8
,
1333 breakpoint
->address
& 0xFFFFFFFFFFFFFFFEULL
,
1334 breakpoint
->length
);
1336 breakpoint
->is_set
= true;
1339 /* Ensure that halting debug mode is enable */
1340 retval
= aarch64_set_dscr_bits(target
, DSCR_HDE
, DSCR_HDE
);
1341 if (retval
!= ERROR_OK
) {
1342 LOG_DEBUG("Failed to set DSCR.HDE");
1349 static int aarch64_set_context_breakpoint(struct target
*target
,
1350 struct breakpoint
*breakpoint
, uint8_t matchmode
)
1352 int retval
= ERROR_FAIL
;
1355 uint8_t byte_addr_select
= 0x0F;
1356 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1357 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
1358 struct aarch64_brp
*brp_list
= aarch64
->brp_list
;
1360 if (breakpoint
->is_set
) {
1361 LOG_WARNING("breakpoint already set");
1364 /*check available context BRPs*/
1365 while ((brp_list
[brp_i
].used
||
1366 (brp_list
[brp_i
].type
!= BRP_CONTEXT
)) && (brp_i
< aarch64
->brp_num
))
1369 if (brp_i
>= aarch64
->brp_num
) {
1370 LOG_ERROR("ERROR Can not find free Breakpoint Register Pair");
1374 breakpoint_hw_set(breakpoint
, brp_i
);
1375 control
= ((matchmode
& 0x7) << 20)
1377 | (byte_addr_select
<< 5)
1379 brp_list
[brp_i
].used
= 1;
1380 brp_list
[brp_i
].value
= (breakpoint
->asid
);
1381 brp_list
[brp_i
].control
= control
;
1382 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1383 + CPUV8_DBG_BVR_BASE
+ 16 * brp_list
[brp_i
].brpn
,
1384 brp_list
[brp_i
].value
);
1385 if (retval
!= ERROR_OK
)
1387 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1388 + CPUV8_DBG_BCR_BASE
+ 16 * brp_list
[brp_i
].brpn
,
1389 brp_list
[brp_i
].control
);
1390 if (retval
!= ERROR_OK
)
1392 LOG_DEBUG("brp %i control 0x%0" PRIx32
" value 0x%" TARGET_PRIxADDR
, brp_i
,
1393 brp_list
[brp_i
].control
,
1394 brp_list
[brp_i
].value
);
1399 static int aarch64_set_hybrid_breakpoint(struct target
*target
, struct breakpoint
*breakpoint
)
1401 int retval
= ERROR_FAIL
;
1402 int brp_1
= 0; /* holds the contextID pair */
1403 int brp_2
= 0; /* holds the IVA pair */
1404 uint32_t control_ctx
, control_iva
;
1405 uint8_t ctx_byte_addr_select
= 0x0F;
1406 uint8_t iva_byte_addr_select
= 0x0F;
1407 uint8_t ctx_machmode
= 0x03;
1408 uint8_t iva_machmode
= 0x01;
1409 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1410 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
1411 struct aarch64_brp
*brp_list
= aarch64
->brp_list
;
1413 if (breakpoint
->is_set
) {
1414 LOG_WARNING("breakpoint already set");
1417 /*check available context BRPs*/
1418 while ((brp_list
[brp_1
].used
||
1419 (brp_list
[brp_1
].type
!= BRP_CONTEXT
)) && (brp_1
< aarch64
->brp_num
))
1422 LOG_DEBUG("brp(CTX) found num: %d", brp_1
);
1423 if (brp_1
>= aarch64
->brp_num
) {
1424 LOG_ERROR("ERROR Can not find free Breakpoint Register Pair");
1428 while ((brp_list
[brp_2
].used
||
1429 (brp_list
[brp_2
].type
!= BRP_NORMAL
)) && (brp_2
< aarch64
->brp_num
))
1432 LOG_DEBUG("brp(IVA) found num: %d", brp_2
);
1433 if (brp_2
>= aarch64
->brp_num
) {
1434 LOG_ERROR("ERROR Can not find free Breakpoint Register Pair");
1438 breakpoint_hw_set(breakpoint
, brp_1
);
1439 breakpoint
->linked_brp
= brp_2
;
1440 control_ctx
= ((ctx_machmode
& 0x7) << 20)
1443 | (ctx_byte_addr_select
<< 5)
1445 brp_list
[brp_1
].used
= 1;
1446 brp_list
[brp_1
].value
= (breakpoint
->asid
);
1447 brp_list
[brp_1
].control
= control_ctx
;
1448 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1449 + CPUV8_DBG_BVR_BASE
+ 16 * brp_list
[brp_1
].brpn
,
1450 brp_list
[brp_1
].value
);
1451 if (retval
!= ERROR_OK
)
1453 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1454 + CPUV8_DBG_BCR_BASE
+ 16 * brp_list
[brp_1
].brpn
,
1455 brp_list
[brp_1
].control
);
1456 if (retval
!= ERROR_OK
)
1459 control_iva
= ((iva_machmode
& 0x7) << 20)
1462 | (iva_byte_addr_select
<< 5)
1464 brp_list
[brp_2
].used
= 1;
1465 brp_list
[brp_2
].value
= breakpoint
->address
& 0xFFFFFFFFFFFFFFFCULL
;
1466 brp_list
[brp_2
].control
= control_iva
;
1467 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1468 + CPUV8_DBG_BVR_BASE
+ 16 * brp_list
[brp_2
].brpn
,
1469 brp_list
[brp_2
].value
& 0xFFFFFFFF);
1470 if (retval
!= ERROR_OK
)
1472 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1473 + CPUV8_DBG_BVR_BASE
+ 4 + 16 * brp_list
[brp_2
].brpn
,
1474 brp_list
[brp_2
].value
>> 32);
1475 if (retval
!= ERROR_OK
)
1477 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1478 + CPUV8_DBG_BCR_BASE
+ 16 * brp_list
[brp_2
].brpn
,
1479 brp_list
[brp_2
].control
);
1480 if (retval
!= ERROR_OK
)
1486 static int aarch64_unset_breakpoint(struct target
*target
, struct breakpoint
*breakpoint
)
1489 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1490 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
1491 struct aarch64_brp
*brp_list
= aarch64
->brp_list
;
1493 if (!breakpoint
->is_set
) {
1494 LOG_WARNING("breakpoint not set");
1498 if (breakpoint
->type
== BKPT_HARD
) {
1499 if ((breakpoint
->address
!= 0) && (breakpoint
->asid
!= 0)) {
1500 int brp_i
= breakpoint
->number
;
1501 int brp_j
= breakpoint
->linked_brp
;
1502 if (brp_i
>= aarch64
->brp_num
) {
1503 LOG_DEBUG("Invalid BRP number in breakpoint");
1506 LOG_DEBUG("rbp %i control 0x%0" PRIx32
" value 0x%" TARGET_PRIxADDR
, brp_i
,
1507 brp_list
[brp_i
].control
, brp_list
[brp_i
].value
);
1508 brp_list
[brp_i
].used
= 0;
1509 brp_list
[brp_i
].value
= 0;
1510 brp_list
[brp_i
].control
= 0;
1511 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1512 + CPUV8_DBG_BCR_BASE
+ 16 * brp_list
[brp_i
].brpn
,
1513 brp_list
[brp_i
].control
);
1514 if (retval
!= ERROR_OK
)
1516 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1517 + CPUV8_DBG_BVR_BASE
+ 16 * brp_list
[brp_i
].brpn
,
1518 (uint32_t)brp_list
[brp_i
].value
);
1519 if (retval
!= ERROR_OK
)
1521 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1522 + CPUV8_DBG_BVR_BASE
+ 4 + 16 * brp_list
[brp_i
].brpn
,
1523 (uint32_t)brp_list
[brp_i
].value
);
1524 if (retval
!= ERROR_OK
)
1526 if ((brp_j
< 0) || (brp_j
>= aarch64
->brp_num
)) {
1527 LOG_DEBUG("Invalid BRP number in breakpoint");
1530 LOG_DEBUG("rbp %i control 0x%0" PRIx32
" value 0x%0" PRIx64
, brp_j
,
1531 brp_list
[brp_j
].control
, brp_list
[brp_j
].value
);
1532 brp_list
[brp_j
].used
= 0;
1533 brp_list
[brp_j
].value
= 0;
1534 brp_list
[brp_j
].control
= 0;
1535 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1536 + CPUV8_DBG_BCR_BASE
+ 16 * brp_list
[brp_j
].brpn
,
1537 brp_list
[brp_j
].control
);
1538 if (retval
!= ERROR_OK
)
1540 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1541 + CPUV8_DBG_BVR_BASE
+ 16 * brp_list
[brp_j
].brpn
,
1542 (uint32_t)brp_list
[brp_j
].value
);
1543 if (retval
!= ERROR_OK
)
1545 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1546 + CPUV8_DBG_BVR_BASE
+ 4 + 16 * brp_list
[brp_j
].brpn
,
1547 (uint32_t)brp_list
[brp_j
].value
);
1548 if (retval
!= ERROR_OK
)
1551 breakpoint
->linked_brp
= 0;
1552 breakpoint
->is_set
= false;
1556 int brp_i
= breakpoint
->number
;
1557 if (brp_i
>= aarch64
->brp_num
) {
1558 LOG_DEBUG("Invalid BRP number in breakpoint");
1561 LOG_DEBUG("rbp %i control 0x%0" PRIx32
" value 0x%0" PRIx64
, brp_i
,
1562 brp_list
[brp_i
].control
, brp_list
[brp_i
].value
);
1563 brp_list
[brp_i
].used
= 0;
1564 brp_list
[brp_i
].value
= 0;
1565 brp_list
[brp_i
].control
= 0;
1566 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1567 + CPUV8_DBG_BCR_BASE
+ 16 * brp_list
[brp_i
].brpn
,
1568 brp_list
[brp_i
].control
);
1569 if (retval
!= ERROR_OK
)
1571 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1572 + CPUV8_DBG_BVR_BASE
+ 16 * brp_list
[brp_i
].brpn
,
1573 brp_list
[brp_i
].value
);
1574 if (retval
!= ERROR_OK
)
1577 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1578 + CPUV8_DBG_BVR_BASE
+ 4 + 16 * brp_list
[brp_i
].brpn
,
1579 (uint32_t)brp_list
[brp_i
].value
);
1580 if (retval
!= ERROR_OK
)
1582 breakpoint
->is_set
= false;
1586 /* restore original instruction (kept in target endianness) */
1588 armv8_cache_d_inner_flush_virt(armv8
,
1589 breakpoint
->address
& 0xFFFFFFFFFFFFFFFEULL
,
1590 breakpoint
->length
);
1592 if (breakpoint
->length
== 4) {
1593 retval
= target_write_memory(target
,
1594 breakpoint
->address
& 0xFFFFFFFFFFFFFFFEULL
,
1595 4, 1, breakpoint
->orig_instr
);
1596 if (retval
!= ERROR_OK
)
1599 retval
= target_write_memory(target
,
1600 breakpoint
->address
& 0xFFFFFFFFFFFFFFFEULL
,
1601 2, 1, breakpoint
->orig_instr
);
1602 if (retval
!= ERROR_OK
)
1606 armv8_cache_d_inner_flush_virt(armv8
,
1607 breakpoint
->address
& 0xFFFFFFFFFFFFFFFEULL
,
1608 breakpoint
->length
);
1610 armv8_cache_i_inner_inval_virt(armv8
,
1611 breakpoint
->address
& 0xFFFFFFFFFFFFFFFEULL
,
1612 breakpoint
->length
);
1614 breakpoint
->is_set
= false;
1619 static int aarch64_add_breakpoint(struct target
*target
,
1620 struct breakpoint
*breakpoint
)
1622 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1624 if ((breakpoint
->type
== BKPT_HARD
) && (aarch64
->brp_num_available
< 1)) {
1625 LOG_INFO("no hardware breakpoint available");
1626 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1629 if (breakpoint
->type
== BKPT_HARD
)
1630 aarch64
->brp_num_available
--;
1632 return aarch64_set_breakpoint(target
, breakpoint
, 0x00); /* Exact match */
1635 static int aarch64_add_context_breakpoint(struct target
*target
,
1636 struct breakpoint
*breakpoint
)
1638 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1640 if ((breakpoint
->type
== BKPT_HARD
) && (aarch64
->brp_num_available
< 1)) {
1641 LOG_INFO("no hardware breakpoint available");
1642 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1645 if (breakpoint
->type
== BKPT_HARD
)
1646 aarch64
->brp_num_available
--;
1648 return aarch64_set_context_breakpoint(target
, breakpoint
, 0x02); /* asid match */
1651 static int aarch64_add_hybrid_breakpoint(struct target
*target
,
1652 struct breakpoint
*breakpoint
)
1654 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1656 if ((breakpoint
->type
== BKPT_HARD
) && (aarch64
->brp_num_available
< 1)) {
1657 LOG_INFO("no hardware breakpoint available");
1658 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1661 if (breakpoint
->type
== BKPT_HARD
)
1662 aarch64
->brp_num_available
--;
1664 return aarch64_set_hybrid_breakpoint(target
, breakpoint
); /* ??? */
1667 static int aarch64_remove_breakpoint(struct target
*target
, struct breakpoint
*breakpoint
)
1669 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1672 /* It is perfectly possible to remove breakpoints while the target is running */
1673 if (target
->state
!= TARGET_HALTED
) {
1674 LOG_WARNING("target not halted");
1675 return ERROR_TARGET_NOT_HALTED
;
1679 if (breakpoint
->is_set
) {
1680 aarch64_unset_breakpoint(target
, breakpoint
);
1681 if (breakpoint
->type
== BKPT_HARD
)
1682 aarch64
->brp_num_available
++;
1688 /* Setup hardware Watchpoint Register Pair */
1689 static int aarch64_set_watchpoint(struct target
*target
,
1690 struct watchpoint
*watchpoint
)
1694 uint32_t control
, offset
, length
;
1695 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1696 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
1697 struct aarch64_brp
*wp_list
= aarch64
->wp_list
;
1699 if (watchpoint
->is_set
) {
1700 LOG_WARNING("watchpoint already set");
1704 while (wp_list
[wp_i
].used
&& (wp_i
< aarch64
->wp_num
))
1706 if (wp_i
>= aarch64
->wp_num
) {
1707 LOG_ERROR("ERROR Can not find free Watchpoint Register Pair");
1708 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1711 control
= (1 << 0) /* enable */
1712 | (3 << 1) /* both user and privileged access */
1713 | (1 << 13); /* higher mode control */
1715 switch (watchpoint
->rw
) {
1727 /* Match up to 8 bytes. */
1728 offset
= watchpoint
->address
& 7;
1729 length
= watchpoint
->length
;
1730 if (offset
+ length
> sizeof(uint64_t)) {
1731 length
= sizeof(uint64_t) - offset
;
1732 LOG_WARNING("Adjust watchpoint match inside 8-byte boundary");
1734 for (; length
> 0; offset
++, length
--)
1735 control
|= (1 << offset
) << 5;
1737 wp_list
[wp_i
].value
= watchpoint
->address
& 0xFFFFFFFFFFFFFFF8ULL
;
1738 wp_list
[wp_i
].control
= control
;
1740 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1741 + CPUV8_DBG_WVR_BASE
+ 16 * wp_list
[wp_i
].brpn
,
1742 (uint32_t)(wp_list
[wp_i
].value
& 0xFFFFFFFF));
1743 if (retval
!= ERROR_OK
)
1745 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1746 + CPUV8_DBG_WVR_BASE
+ 4 + 16 * wp_list
[wp_i
].brpn
,
1747 (uint32_t)(wp_list
[wp_i
].value
>> 32));
1748 if (retval
!= ERROR_OK
)
1751 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1752 + CPUV8_DBG_WCR_BASE
+ 16 * wp_list
[wp_i
].brpn
,
1754 if (retval
!= ERROR_OK
)
1756 LOG_DEBUG("wp %i control 0x%0" PRIx32
" value 0x%" TARGET_PRIxADDR
, wp_i
,
1757 wp_list
[wp_i
].control
, wp_list
[wp_i
].value
);
1759 /* Ensure that halting debug mode is enable */
1760 retval
= aarch64_set_dscr_bits(target
, DSCR_HDE
, DSCR_HDE
);
1761 if (retval
!= ERROR_OK
) {
1762 LOG_DEBUG("Failed to set DSCR.HDE");
1766 wp_list
[wp_i
].used
= 1;
1767 watchpoint_set(watchpoint
, wp_i
);
1772 /* Clear hardware Watchpoint Register Pair */
1773 static int aarch64_unset_watchpoint(struct target
*target
,
1774 struct watchpoint
*watchpoint
)
1777 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1778 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
1779 struct aarch64_brp
*wp_list
= aarch64
->wp_list
;
1781 if (!watchpoint
->is_set
) {
1782 LOG_WARNING("watchpoint not set");
1786 int wp_i
= watchpoint
->number
;
1787 if (wp_i
>= aarch64
->wp_num
) {
1788 LOG_DEBUG("Invalid WP number in watchpoint");
1791 LOG_DEBUG("rwp %i control 0x%0" PRIx32
" value 0x%0" PRIx64
, wp_i
,
1792 wp_list
[wp_i
].control
, wp_list
[wp_i
].value
);
1793 wp_list
[wp_i
].used
= 0;
1794 wp_list
[wp_i
].value
= 0;
1795 wp_list
[wp_i
].control
= 0;
1796 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1797 + CPUV8_DBG_WCR_BASE
+ 16 * wp_list
[wp_i
].brpn
,
1798 wp_list
[wp_i
].control
);
1799 if (retval
!= ERROR_OK
)
1801 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1802 + CPUV8_DBG_WVR_BASE
+ 16 * wp_list
[wp_i
].brpn
,
1803 wp_list
[wp_i
].value
);
1804 if (retval
!= ERROR_OK
)
1807 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1808 + CPUV8_DBG_WVR_BASE
+ 4 + 16 * wp_list
[wp_i
].brpn
,
1809 (uint32_t)wp_list
[wp_i
].value
);
1810 if (retval
!= ERROR_OK
)
1812 watchpoint
->is_set
= false;
1817 static int aarch64_add_watchpoint(struct target
*target
,
1818 struct watchpoint
*watchpoint
)
1821 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1823 if (aarch64
->wp_num_available
< 1) {
1824 LOG_INFO("no hardware watchpoint available");
1825 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1828 retval
= aarch64_set_watchpoint(target
, watchpoint
);
1829 if (retval
== ERROR_OK
)
1830 aarch64
->wp_num_available
--;
1835 static int aarch64_remove_watchpoint(struct target
*target
,
1836 struct watchpoint
*watchpoint
)
1838 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1840 if (watchpoint
->is_set
) {
1841 aarch64_unset_watchpoint(target
, watchpoint
);
1842 aarch64
->wp_num_available
++;
1849 * find out which watchpoint hits
1850 * get exception address and compare the address to watchpoints
1852 static int aarch64_hit_watchpoint(struct target
*target
,
1853 struct watchpoint
**hit_watchpoint
)
1855 if (target
->debug_reason
!= DBG_REASON_WATCHPOINT
)
1858 struct armv8_common
*armv8
= target_to_armv8(target
);
1860 target_addr_t exception_address
;
1861 struct watchpoint
*wp
;
1863 exception_address
= armv8
->dpm
.wp_addr
;
1865 if (exception_address
== 0xFFFFFFFF)
1868 for (wp
= target
->watchpoints
; wp
; wp
= wp
->next
)
1869 if (exception_address
>= wp
->address
&& exception_address
< (wp
->address
+ wp
->length
)) {
1870 *hit_watchpoint
= wp
;
1878 * Cortex-A8 Reset functions
1881 static int aarch64_enable_reset_catch(struct target
*target
, bool enable
)
1883 struct armv8_common
*armv8
= target_to_armv8(target
);
1887 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
1888 armv8
->debug_base
+ CPUV8_DBG_EDECR
, &edecr
);
1889 LOG_DEBUG("EDECR = 0x%08" PRIx32
", enable=%d", edecr
, enable
);
1890 if (retval
!= ERROR_OK
)
1898 return mem_ap_write_atomic_u32(armv8
->debug_ap
,
1899 armv8
->debug_base
+ CPUV8_DBG_EDECR
, edecr
);
1902 static int aarch64_clear_reset_catch(struct target
*target
)
1904 struct armv8_common
*armv8
= target_to_armv8(target
);
1909 /* check if Reset Catch debug event triggered as expected */
1910 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
1911 armv8
->debug_base
+ CPUV8_DBG_EDESR
, &edesr
);
1912 if (retval
!= ERROR_OK
)
1915 was_triggered
= !!(edesr
& ESR_RC
);
1916 LOG_DEBUG("Reset Catch debug event %s",
1917 was_triggered
? "triggered" : "NOT triggered!");
1919 if (was_triggered
) {
1920 /* clear pending Reset Catch debug event */
1922 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
1923 armv8
->debug_base
+ CPUV8_DBG_EDESR
, edesr
);
1924 if (retval
!= ERROR_OK
)
1931 static int aarch64_assert_reset(struct target
*target
)
1933 struct armv8_common
*armv8
= target_to_armv8(target
);
1934 enum reset_types reset_config
= jtag_get_reset_config();
1939 /* Issue some kind of warm reset. */
1940 if (target_has_event_action(target
, TARGET_EVENT_RESET_ASSERT
))
1941 target_handle_event(target
, TARGET_EVENT_RESET_ASSERT
);
1942 else if (reset_config
& RESET_HAS_SRST
) {
1943 bool srst_asserted
= false;
1945 if (target
->reset_halt
&& !(reset_config
& RESET_SRST_PULLS_TRST
)) {
1946 if (target_was_examined(target
)) {
1948 if (reset_config
& RESET_SRST_NO_GATING
) {
1950 * SRST needs to be asserted *before* Reset Catch
1951 * debug event can be set up.
1953 adapter_assert_reset();
1954 srst_asserted
= true;
1957 /* make sure to clear all sticky errors */
1958 mem_ap_write_atomic_u32(armv8
->debug_ap
,
1959 armv8
->debug_base
+ CPUV8_DBG_DRCR
, DRCR_CSE
);
1961 /* set up Reset Catch debug event to halt the CPU after reset */
1962 retval
= aarch64_enable_reset_catch(target
, true);
1963 if (retval
!= ERROR_OK
)
1964 LOG_WARNING("%s: Error enabling Reset Catch debug event; the CPU will not halt immediately after reset!",
1965 target_name(target
));
1967 LOG_WARNING("%s: Target not examined, will not halt immediately after reset!",
1968 target_name(target
));
1972 /* REVISIT handle "pulls" cases, if there's
1973 * hardware that needs them to work.
1976 adapter_assert_reset();
1978 LOG_ERROR("%s: how to reset?", target_name(target
));
1982 /* registers are now invalid */
1983 if (target_was_examined(target
)) {
1984 register_cache_invalidate(armv8
->arm
.core_cache
);
1985 register_cache_invalidate(armv8
->arm
.core_cache
->next
);
1988 target
->state
= TARGET_RESET
;
1993 static int aarch64_deassert_reset(struct target
*target
)
1999 /* be certain SRST is off */
2000 adapter_deassert_reset();
2002 if (!target_was_examined(target
))
2005 retval
= aarch64_init_debug_access(target
);
2006 if (retval
!= ERROR_OK
)
2009 retval
= aarch64_poll(target
);
2010 if (retval
!= ERROR_OK
)
2013 if (target
->reset_halt
) {
2014 /* clear pending Reset Catch debug event */
2015 retval
= aarch64_clear_reset_catch(target
);
2016 if (retval
!= ERROR_OK
)
2017 LOG_WARNING("%s: Clearing Reset Catch debug event failed",
2018 target_name(target
));
2020 /* disable Reset Catch debug event */
2021 retval
= aarch64_enable_reset_catch(target
, false);
2022 if (retval
!= ERROR_OK
)
2023 LOG_WARNING("%s: Disabling Reset Catch debug event failed",
2024 target_name(target
));
2026 if (target
->state
!= TARGET_HALTED
) {
2027 LOG_WARNING("%s: ran after reset and before halt ...",
2028 target_name(target
));
2029 if (target_was_examined(target
)) {
2030 retval
= aarch64_halt_one(target
, HALT_LAZY
);
2031 if (retval
!= ERROR_OK
)
2034 target
->state
= TARGET_UNKNOWN
;
2042 static int aarch64_write_cpu_memory_slow(struct target
*target
,
2043 uint32_t size
, uint32_t count
, const uint8_t *buffer
, uint32_t *dscr
)
2045 struct armv8_common
*armv8
= target_to_armv8(target
);
2046 struct arm_dpm
*dpm
= &armv8
->dpm
;
2047 struct arm
*arm
= &armv8
->arm
;
2050 if (size
> 4 && arm
->core_state
!= ARM_STATE_AARCH64
) {
2051 LOG_ERROR("memory write sizes greater than 4 bytes is only supported for AArch64 state");
2055 armv8_reg_current(arm
, 1)->dirty
= true;
2057 /* change DCC to normal mode if necessary */
2058 if (*dscr
& DSCR_MA
) {
2060 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2061 armv8
->debug_base
+ CPUV8_DBG_DSCR
, *dscr
);
2062 if (retval
!= ERROR_OK
)
2070 /* write the data to store into DTRRX (and DTRTX for 64-bit) */
2074 data
= target_buffer_get_u16(target
, buffer
);
2076 data
= target_buffer_get_u32(target
, buffer
);
2078 data
= target_buffer_get_u64(target
, buffer
);
2080 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2081 armv8
->debug_base
+ CPUV8_DBG_DTRRX
, (uint32_t)data
);
2082 if (retval
== ERROR_OK
&& size
> 4)
2083 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2084 armv8
->debug_base
+ CPUV8_DBG_DTRTX
, (uint32_t)(data
>> 32));
2085 if (retval
!= ERROR_OK
)
2088 if (arm
->core_state
== ARM_STATE_AARCH64
)
2090 retval
= dpm
->instr_execute(dpm
, ARMV8_MRS(SYSTEM_DBG_DTRRX_EL0
, 1));
2092 retval
= dpm
->instr_execute(dpm
, ARMV8_MRS(SYSTEM_DBG_DBGDTR_EL0
, 1));
2094 retval
= dpm
->instr_execute(dpm
, ARMV4_5_MRC(14, 0, 1, 0, 5, 0));
2095 if (retval
!= ERROR_OK
)
2099 opcode
= armv8_opcode(armv8
, ARMV8_OPC_STRB_IP
);
2101 opcode
= armv8_opcode(armv8
, ARMV8_OPC_STRH_IP
);
2103 opcode
= armv8_opcode(armv8
, ARMV8_OPC_STRW_IP
);
2105 opcode
= armv8_opcode(armv8
, ARMV8_OPC_STRD_IP
);
2107 retval
= dpm
->instr_execute(dpm
, opcode
);
2108 if (retval
!= ERROR_OK
)
2119 static int aarch64_write_cpu_memory_fast(struct target
*target
,
2120 uint32_t count
, const uint8_t *buffer
, uint32_t *dscr
)
2122 struct armv8_common
*armv8
= target_to_armv8(target
);
2123 struct arm
*arm
= &armv8
->arm
;
2126 armv8_reg_current(arm
, 1)->dirty
= true;
2128 /* Step 1.d - Change DCC to memory mode */
2130 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2131 armv8
->debug_base
+ CPUV8_DBG_DSCR
, *dscr
);
2132 if (retval
!= ERROR_OK
)
2136 /* Step 2.a - Do the write */
2137 retval
= mem_ap_write_buf_noincr(armv8
->debug_ap
,
2138 buffer
, 4, count
, armv8
->debug_base
+ CPUV8_DBG_DTRRX
);
2139 if (retval
!= ERROR_OK
)
2142 /* Step 3.a - Switch DTR mode back to Normal mode */
2144 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2145 armv8
->debug_base
+ CPUV8_DBG_DSCR
, *dscr
);
2146 if (retval
!= ERROR_OK
)
2152 static int aarch64_write_cpu_memory(struct target
*target
,
2153 uint64_t address
, uint32_t size
,
2154 uint32_t count
, const uint8_t *buffer
)
2156 /* write memory through APB-AP */
2157 int retval
= ERROR_COMMAND_SYNTAX_ERROR
;
2158 struct armv8_common
*armv8
= target_to_armv8(target
);
2159 struct arm_dpm
*dpm
= &armv8
->dpm
;
2160 struct arm
*arm
= &armv8
->arm
;
2163 if (target
->state
!= TARGET_HALTED
) {
2164 LOG_TARGET_ERROR(target
, "not halted");
2165 return ERROR_TARGET_NOT_HALTED
;
2168 /* Mark register X0 as dirty, as it will be used
2169 * for transferring the data.
2170 * It will be restored automatically when exiting
2173 armv8_reg_current(arm
, 0)->dirty
= true;
2175 /* This algorithm comes from DDI0487A.g, chapter J9.1 */
2178 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2179 armv8
->debug_base
+ CPUV8_DBG_DSCR
, &dscr
);
2180 if (retval
!= ERROR_OK
)
2183 /* Set Normal access mode */
2184 dscr
= (dscr
& ~DSCR_MA
);
2185 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2186 armv8
->debug_base
+ CPUV8_DBG_DSCR
, dscr
);
2187 if (retval
!= ERROR_OK
)
2190 if (arm
->core_state
== ARM_STATE_AARCH64
) {
2191 /* Write X0 with value 'address' using write procedure */
2192 /* Step 1.a+b - Write the address for read access into DBGDTR_EL0 */
2193 /* Step 1.c - Copy value from DTR to R0 using instruction mrs DBGDTR_EL0, x0 */
2194 retval
= dpm
->instr_write_data_dcc_64(dpm
,
2195 ARMV8_MRS(SYSTEM_DBG_DBGDTR_EL0
, 0), address
);
2197 /* Write R0 with value 'address' using write procedure */
2198 /* Step 1.a+b - Write the address for read access into DBGDTRRX */
2199 /* Step 1.c - Copy value from DTR to R0 using instruction mrc DBGDTRTXint, r0 */
2200 retval
= dpm
->instr_write_data_dcc(dpm
,
2201 ARMV4_5_MRC(14, 0, 0, 0, 5, 0), address
);
2204 if (retval
!= ERROR_OK
)
2207 if (size
== 4 && (address
% 4) == 0)
2208 retval
= aarch64_write_cpu_memory_fast(target
, count
, buffer
, &dscr
);
2210 retval
= aarch64_write_cpu_memory_slow(target
, size
, count
, buffer
, &dscr
);
2212 if (retval
!= ERROR_OK
) {
2213 /* Unset DTR mode */
2214 mem_ap_read_atomic_u32(armv8
->debug_ap
,
2215 armv8
->debug_base
+ CPUV8_DBG_DSCR
, &dscr
);
2217 mem_ap_write_atomic_u32(armv8
->debug_ap
,
2218 armv8
->debug_base
+ CPUV8_DBG_DSCR
, dscr
);
2221 /* Check for sticky abort flags in the DSCR */
2222 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2223 armv8
->debug_base
+ CPUV8_DBG_DSCR
, &dscr
);
2224 if (retval
!= ERROR_OK
)
2228 if (dscr
& (DSCR_ERR
| DSCR_SYS_ERROR_PEND
)) {
2229 /* Abort occurred - clear it and exit */
2230 LOG_ERROR("abort occurred - dscr = 0x%08" PRIx32
, dscr
);
2231 armv8_dpm_handle_exception(dpm
, true);
2239 static int aarch64_read_cpu_memory_slow(struct target
*target
,
2240 uint32_t size
, uint32_t count
, uint8_t *buffer
, uint32_t *dscr
)
2242 struct armv8_common
*armv8
= target_to_armv8(target
);
2243 struct arm_dpm
*dpm
= &armv8
->dpm
;
2244 struct arm
*arm
= &armv8
->arm
;
2247 if (size
> 4 && arm
->core_state
!= ARM_STATE_AARCH64
) {
2248 LOG_ERROR("memory read sizes greater than 4 bytes is only supported for AArch64 state");
2252 armv8_reg_current(arm
, 1)->dirty
= true;
2254 /* change DCC to normal mode (if necessary) */
2255 if (*dscr
& DSCR_MA
) {
2257 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2258 armv8
->debug_base
+ CPUV8_DBG_DSCR
, *dscr
);
2259 if (retval
!= ERROR_OK
)
2270 opcode
= armv8_opcode(armv8
, ARMV8_OPC_LDRB_IP
);
2272 opcode
= armv8_opcode(armv8
, ARMV8_OPC_LDRH_IP
);
2274 opcode
= armv8_opcode(armv8
, ARMV8_OPC_LDRW_IP
);
2276 opcode
= armv8_opcode(armv8
, ARMV8_OPC_LDRD_IP
);
2278 retval
= dpm
->instr_execute(dpm
, opcode
);
2279 if (retval
!= ERROR_OK
)
2282 if (arm
->core_state
== ARM_STATE_AARCH64
)
2284 retval
= dpm
->instr_execute(dpm
, ARMV8_MSR_GP(SYSTEM_DBG_DTRTX_EL0
, 1));
2286 retval
= dpm
->instr_execute(dpm
, ARMV8_MSR_GP(SYSTEM_DBG_DBGDTR_EL0
, 1));
2288 retval
= dpm
->instr_execute(dpm
, ARMV4_5_MCR(14, 0, 1, 0, 5, 0));
2289 if (retval
!= ERROR_OK
)
2292 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2293 armv8
->debug_base
+ CPUV8_DBG_DTRTX
, &lower
);
2294 if (retval
== ERROR_OK
) {
2296 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2297 armv8
->debug_base
+ CPUV8_DBG_DTRRX
, &higher
);
2301 if (retval
!= ERROR_OK
)
2304 data
= (uint64_t)lower
| (uint64_t)higher
<< 32;
2307 *buffer
= (uint8_t)data
;
2309 target_buffer_set_u16(target
, buffer
, (uint16_t)data
);
2311 target_buffer_set_u32(target
, buffer
, (uint32_t)data
);
2313 target_buffer_set_u64(target
, buffer
, data
);
2323 static int aarch64_read_cpu_memory_fast(struct target
*target
,
2324 uint32_t count
, uint8_t *buffer
, uint32_t *dscr
)
2326 struct armv8_common
*armv8
= target_to_armv8(target
);
2327 struct arm_dpm
*dpm
= &armv8
->dpm
;
2328 struct arm
*arm
= &armv8
->arm
;
2332 /* Mark X1 as dirty */
2333 armv8_reg_current(arm
, 1)->dirty
= true;
2335 if (arm
->core_state
== ARM_STATE_AARCH64
) {
2336 /* Step 1.d - Dummy operation to ensure EDSCR.Txfull == 1 */
2337 retval
= dpm
->instr_execute(dpm
, ARMV8_MSR_GP(SYSTEM_DBG_DBGDTR_EL0
, 0));
2339 /* Step 1.d - Dummy operation to ensure EDSCR.Txfull == 1 */
2340 retval
= dpm
->instr_execute(dpm
, ARMV4_5_MCR(14, 0, 0, 0, 5, 0));
2343 if (retval
!= ERROR_OK
)
2346 /* Step 1.e - Change DCC to memory mode */
2348 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2349 armv8
->debug_base
+ CPUV8_DBG_DSCR
, *dscr
);
2350 if (retval
!= ERROR_OK
)
2353 /* Step 1.f - read DBGDTRTX and discard the value */
2354 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2355 armv8
->debug_base
+ CPUV8_DBG_DTRTX
, &value
);
2356 if (retval
!= ERROR_OK
)
2360 /* Read the data - Each read of the DTRTX register causes the instruction to be reissued
2361 * Abort flags are sticky, so can be read at end of transactions
2363 * This data is read in aligned to 32 bit boundary.
2367 /* Step 2.a - Loop n-1 times, each read of DBGDTRTX reads the data from [X0] and
2368 * increments X0 by 4. */
2369 retval
= mem_ap_read_buf_noincr(armv8
->debug_ap
, buffer
, 4, count
,
2370 armv8
->debug_base
+ CPUV8_DBG_DTRTX
);
2371 if (retval
!= ERROR_OK
)
2375 /* Step 3.a - set DTR access mode back to Normal mode */
2377 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2378 armv8
->debug_base
+ CPUV8_DBG_DSCR
, *dscr
);
2379 if (retval
!= ERROR_OK
)
2382 /* Step 3.b - read DBGDTRTX for the final value */
2383 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2384 armv8
->debug_base
+ CPUV8_DBG_DTRTX
, &value
);
2385 if (retval
!= ERROR_OK
)
2388 target_buffer_set_u32(target
, buffer
+ count
* 4, value
);
2392 static int aarch64_read_cpu_memory(struct target
*target
,
2393 target_addr_t address
, uint32_t size
,
2394 uint32_t count
, uint8_t *buffer
)
2396 /* read memory through APB-AP */
2397 int retval
= ERROR_COMMAND_SYNTAX_ERROR
;
2398 struct armv8_common
*armv8
= target_to_armv8(target
);
2399 struct arm_dpm
*dpm
= &armv8
->dpm
;
2400 struct arm
*arm
= &armv8
->arm
;
2403 LOG_DEBUG("Reading CPU memory address 0x%016" PRIx64
" size %" PRIu32
" count %" PRIu32
,
2404 address
, size
, count
);
2406 if (target
->state
!= TARGET_HALTED
) {
2407 LOG_TARGET_ERROR(target
, "not halted");
2408 return ERROR_TARGET_NOT_HALTED
;
2411 /* Mark register X0 as dirty, as it will be used
2412 * for transferring the data.
2413 * It will be restored automatically when exiting
2416 armv8_reg_current(arm
, 0)->dirty
= true;
2419 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2420 armv8
->debug_base
+ CPUV8_DBG_DSCR
, &dscr
);
2421 if (retval
!= ERROR_OK
)
2424 /* This algorithm comes from DDI0487A.g, chapter J9.1 */
2426 /* Set Normal access mode */
2428 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2429 armv8
->debug_base
+ CPUV8_DBG_DSCR
, dscr
);
2430 if (retval
!= ERROR_OK
)
2433 if (arm
->core_state
== ARM_STATE_AARCH64
) {
2434 /* Write X0 with value 'address' using write procedure */
2435 /* Step 1.a+b - Write the address for read access into DBGDTR_EL0 */
2436 /* Step 1.c - Copy value from DTR to R0 using instruction mrs DBGDTR_EL0, x0 */
2437 retval
= dpm
->instr_write_data_dcc_64(dpm
,
2438 ARMV8_MRS(SYSTEM_DBG_DBGDTR_EL0
, 0), address
);
2440 /* Write R0 with value 'address' using write procedure */
2441 /* Step 1.a+b - Write the address for read access into DBGDTRRXint */
2442 /* Step 1.c - Copy value from DTR to R0 using instruction mrc DBGDTRTXint, r0 */
2443 retval
= dpm
->instr_write_data_dcc(dpm
,
2444 ARMV4_5_MRC(14, 0, 0, 0, 5, 0), address
);
2447 if (retval
!= ERROR_OK
)
2450 if (size
== 4 && (address
% 4) == 0)
2451 retval
= aarch64_read_cpu_memory_fast(target
, count
, buffer
, &dscr
);
2453 retval
= aarch64_read_cpu_memory_slow(target
, size
, count
, buffer
, &dscr
);
2455 if (dscr
& DSCR_MA
) {
2457 mem_ap_write_atomic_u32(armv8
->debug_ap
,
2458 armv8
->debug_base
+ CPUV8_DBG_DSCR
, dscr
);
2461 if (retval
!= ERROR_OK
)
2464 /* Check for sticky abort flags in the DSCR */
2465 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2466 armv8
->debug_base
+ CPUV8_DBG_DSCR
, &dscr
);
2467 if (retval
!= ERROR_OK
)
2472 if (dscr
& (DSCR_ERR
| DSCR_SYS_ERROR_PEND
)) {
2473 /* Abort occurred - clear it and exit */
2474 LOG_ERROR("abort occurred - dscr = 0x%08" PRIx32
, dscr
);
2475 armv8_dpm_handle_exception(dpm
, true);
2483 static int aarch64_read_phys_memory(struct target
*target
,
2484 target_addr_t address
, uint32_t size
,
2485 uint32_t count
, uint8_t *buffer
)
2487 int retval
= ERROR_COMMAND_SYNTAX_ERROR
;
2489 if (count
&& buffer
) {
2490 /* read memory through APB-AP */
2491 retval
= aarch64_mmu_modify(target
, 0);
2492 if (retval
!= ERROR_OK
)
2494 retval
= aarch64_read_cpu_memory(target
, address
, size
, count
, buffer
);
2499 static int aarch64_read_memory(struct target
*target
, target_addr_t address
,
2500 uint32_t size
, uint32_t count
, uint8_t *buffer
)
2502 int mmu_enabled
= 0;
2505 /* determine if MMU was enabled on target stop */
2506 retval
= aarch64_mmu(target
, &mmu_enabled
);
2507 if (retval
!= ERROR_OK
)
2511 /* enable MMU as we could have disabled it for phys access */
2512 retval
= aarch64_mmu_modify(target
, 1);
2513 if (retval
!= ERROR_OK
)
2516 return aarch64_read_cpu_memory(target
, address
, size
, count
, buffer
);
2519 static int aarch64_write_phys_memory(struct target
*target
,
2520 target_addr_t address
, uint32_t size
,
2521 uint32_t count
, const uint8_t *buffer
)
2523 int retval
= ERROR_COMMAND_SYNTAX_ERROR
;
2525 if (count
&& buffer
) {
2526 /* write memory through APB-AP */
2527 retval
= aarch64_mmu_modify(target
, 0);
2528 if (retval
!= ERROR_OK
)
2530 return aarch64_write_cpu_memory(target
, address
, size
, count
, buffer
);
2536 static int aarch64_write_memory(struct target
*target
, target_addr_t address
,
2537 uint32_t size
, uint32_t count
, const uint8_t *buffer
)
2539 int mmu_enabled
= 0;
2542 /* determine if MMU was enabled on target stop */
2543 retval
= aarch64_mmu(target
, &mmu_enabled
);
2544 if (retval
!= ERROR_OK
)
2548 /* enable MMU as we could have disabled it for phys access */
2549 retval
= aarch64_mmu_modify(target
, 1);
2550 if (retval
!= ERROR_OK
)
2553 return aarch64_write_cpu_memory(target
, address
, size
, count
, buffer
);
2556 static int aarch64_handle_target_request(void *priv
)
2558 struct target
*target
= priv
;
2559 struct armv8_common
*armv8
= target_to_armv8(target
);
2562 if (!target_was_examined(target
))
2564 if (!target
->dbg_msg_enabled
)
2567 if (target
->state
== TARGET_RUNNING
) {
2570 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2571 armv8
->debug_base
+ CPUV8_DBG_DSCR
, &dscr
);
2573 /* check if we have data */
2574 while ((dscr
& DSCR_DTR_TX_FULL
) && (retval
== ERROR_OK
)) {
2575 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2576 armv8
->debug_base
+ CPUV8_DBG_DTRTX
, &request
);
2577 if (retval
== ERROR_OK
) {
2578 target_request(target
, request
);
2579 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2580 armv8
->debug_base
+ CPUV8_DBG_DSCR
, &dscr
);
2588 static int aarch64_examine_first(struct target
*target
)
2590 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
2591 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
2592 struct adiv5_dap
*swjdp
= armv8
->arm
.dap
;
2593 struct aarch64_private_config
*pc
= target
->private_config
;
2595 int retval
= ERROR_OK
;
2596 uint64_t debug
, ttypr
;
2598 uint32_t tmp0
, tmp1
, tmp2
, tmp3
;
2599 debug
= ttypr
= cpuid
= 0;
2604 if (!armv8
->debug_ap
) {
2605 if (pc
->adiv5_config
.ap_num
== DP_APSEL_INVALID
) {
2606 /* Search for the APB-AB */
2607 retval
= dap_find_get_ap(swjdp
, AP_TYPE_APB_AP
, &armv8
->debug_ap
);
2608 if (retval
!= ERROR_OK
) {
2609 LOG_ERROR("Could not find APB-AP for debug access");
2613 armv8
->debug_ap
= dap_get_ap(swjdp
, pc
->adiv5_config
.ap_num
);
2614 if (!armv8
->debug_ap
) {
2615 LOG_ERROR("Cannot get AP");
2621 retval
= mem_ap_init(armv8
->debug_ap
);
2622 if (retval
!= ERROR_OK
) {
2623 LOG_ERROR("Could not initialize the APB-AP");
2627 armv8
->debug_ap
->memaccess_tck
= 10;
2629 if (!target
->dbgbase_set
) {
2630 /* Lookup Processor DAP */
2631 retval
= dap_lookup_cs_component(armv8
->debug_ap
, ARM_CS_C9_DEVTYPE_CORE_DEBUG
,
2632 &armv8
->debug_base
, target
->coreid
);
2633 if (retval
!= ERROR_OK
)
2635 LOG_DEBUG("Detected core %" PRId32
" dbgbase: " TARGET_ADDR_FMT
,
2636 target
->coreid
, armv8
->debug_base
);
2638 armv8
->debug_base
= target
->dbgbase
;
2640 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2641 armv8
->debug_base
+ CPUV8_DBG_OSLAR
, 0);
2642 if (retval
!= ERROR_OK
) {
2643 LOG_DEBUG("Examine %s failed", "oslock");
2647 retval
= mem_ap_read_u32(armv8
->debug_ap
,
2648 armv8
->debug_base
+ CPUV8_DBG_MAINID0
, &cpuid
);
2649 if (retval
!= ERROR_OK
) {
2650 LOG_DEBUG("Examine %s failed", "CPUID");
2654 retval
= mem_ap_read_u32(armv8
->debug_ap
,
2655 armv8
->debug_base
+ CPUV8_DBG_MEMFEATURE0
, &tmp0
);
2656 retval
+= mem_ap_read_u32(armv8
->debug_ap
,
2657 armv8
->debug_base
+ CPUV8_DBG_MEMFEATURE0
+ 4, &tmp1
);
2658 if (retval
!= ERROR_OK
) {
2659 LOG_DEBUG("Examine %s failed", "Memory Model Type");
2662 retval
= mem_ap_read_u32(armv8
->debug_ap
,
2663 armv8
->debug_base
+ CPUV8_DBG_DBGFEATURE0
, &tmp2
);
2664 retval
+= mem_ap_read_u32(armv8
->debug_ap
,
2665 armv8
->debug_base
+ CPUV8_DBG_DBGFEATURE0
+ 4, &tmp3
);
2666 if (retval
!= ERROR_OK
) {
2667 LOG_DEBUG("Examine %s failed", "ID_AA64DFR0_EL1");
2671 retval
= dap_run(armv8
->debug_ap
->dap
);
2672 if (retval
!= ERROR_OK
) {
2673 LOG_ERROR("%s: examination failed\n", target_name(target
));
2678 ttypr
= (ttypr
<< 32) | tmp0
;
2680 debug
= (debug
<< 32) | tmp2
;
2682 LOG_DEBUG("cpuid = 0x%08" PRIx32
, cpuid
);
2683 LOG_DEBUG("ttypr = 0x%08" PRIx64
, ttypr
);
2684 LOG_DEBUG("debug = 0x%08" PRIx64
, debug
);
2687 LOG_TARGET_ERROR(target
, "CTI not specified");
2691 armv8
->cti
= pc
->cti
;
2693 retval
= aarch64_dpm_setup(aarch64
, debug
);
2694 if (retval
!= ERROR_OK
)
2697 /* Setup Breakpoint Register Pairs */
2698 aarch64
->brp_num
= (uint32_t)((debug
>> 12) & 0x0F) + 1;
2699 aarch64
->brp_num_context
= (uint32_t)((debug
>> 28) & 0x0F) + 1;
2700 aarch64
->brp_num_available
= aarch64
->brp_num
;
2701 aarch64
->brp_list
= calloc(aarch64
->brp_num
, sizeof(struct aarch64_brp
));
2702 for (i
= 0; i
< aarch64
->brp_num
; i
++) {
2703 aarch64
->brp_list
[i
].used
= 0;
2704 if (i
< (aarch64
->brp_num
-aarch64
->brp_num_context
))
2705 aarch64
->brp_list
[i
].type
= BRP_NORMAL
;
2707 aarch64
->brp_list
[i
].type
= BRP_CONTEXT
;
2708 aarch64
->brp_list
[i
].value
= 0;
2709 aarch64
->brp_list
[i
].control
= 0;
2710 aarch64
->brp_list
[i
].brpn
= i
;
2713 /* Setup Watchpoint Register Pairs */
2714 aarch64
->wp_num
= (uint32_t)((debug
>> 20) & 0x0F) + 1;
2715 aarch64
->wp_num_available
= aarch64
->wp_num
;
2716 aarch64
->wp_list
= calloc(aarch64
->wp_num
, sizeof(struct aarch64_brp
));
2717 for (i
= 0; i
< aarch64
->wp_num
; i
++) {
2718 aarch64
->wp_list
[i
].used
= 0;
2719 aarch64
->wp_list
[i
].type
= BRP_NORMAL
;
2720 aarch64
->wp_list
[i
].value
= 0;
2721 aarch64
->wp_list
[i
].control
= 0;
2722 aarch64
->wp_list
[i
].brpn
= i
;
2725 LOG_DEBUG("Configured %i hw breakpoints, %i watchpoints",
2726 aarch64
->brp_num
, aarch64
->wp_num
);
2728 target
->state
= TARGET_UNKNOWN
;
2729 target
->debug_reason
= DBG_REASON_NOTHALTED
;
2730 aarch64
->isrmasking_mode
= AARCH64_ISRMASK_ON
;
2731 target_set_examined(target
);
2735 static int aarch64_examine(struct target
*target
)
2737 int retval
= ERROR_OK
;
2739 /* don't re-probe hardware after each reset */
2740 if (!target_was_examined(target
))
2741 retval
= aarch64_examine_first(target
);
2743 /* Configure core debug access */
2744 if (retval
== ERROR_OK
)
2745 retval
= aarch64_init_debug_access(target
);
2747 if (retval
== ERROR_OK
)
2748 retval
= aarch64_poll(target
);
2754 * Cortex-A8 target creation and initialization
2757 static int aarch64_init_target(struct command_context
*cmd_ctx
,
2758 struct target
*target
)
2760 /* examine_first() does a bunch of this */
2761 arm_semihosting_init(target
);
2765 static int aarch64_init_arch_info(struct target
*target
,
2766 struct aarch64_common
*aarch64
, struct adiv5_dap
*dap
)
2768 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
2770 /* Setup struct aarch64_common */
2771 aarch64
->common_magic
= AARCH64_COMMON_MAGIC
;
2772 armv8
->arm
.dap
= dap
;
2774 /* register arch-specific functions */
2775 armv8
->examine_debug_reason
= NULL
;
2776 armv8
->post_debug_entry
= aarch64_post_debug_entry
;
2777 armv8
->pre_restore_context
= NULL
;
2778 armv8
->armv8_mmu
.read_physical_memory
= aarch64_read_phys_memory
;
2780 armv8_init_arch_info(target
, armv8
);
2781 target_register_timer_callback(aarch64_handle_target_request
, 1,
2782 TARGET_TIMER_TYPE_PERIODIC
, target
);
2787 static int armv8r_target_create(struct target
*target
, Jim_Interp
*interp
)
2789 struct aarch64_private_config
*pc
= target
->private_config
;
2790 struct aarch64_common
*aarch64
;
2792 if (adiv5_verify_config(&pc
->adiv5_config
) != ERROR_OK
)
2795 aarch64
= calloc(1, sizeof(struct aarch64_common
));
2797 LOG_ERROR("Out of memory");
2801 aarch64
->armv8_common
.is_armv8r
= true;
2803 return aarch64_init_arch_info(target
, aarch64
, pc
->adiv5_config
.dap
);
2806 static int aarch64_target_create(struct target
*target
, Jim_Interp
*interp
)
2808 struct aarch64_private_config
*pc
= target
->private_config
;
2809 struct aarch64_common
*aarch64
;
2811 if (adiv5_verify_config(&pc
->adiv5_config
) != ERROR_OK
)
2814 aarch64
= calloc(1, sizeof(struct aarch64_common
));
2816 LOG_ERROR("Out of memory");
2820 aarch64
->armv8_common
.is_armv8r
= false;
2822 return aarch64_init_arch_info(target
, aarch64
, pc
->adiv5_config
.dap
);
2825 static void aarch64_deinit_target(struct target
*target
)
2827 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
2828 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
2829 struct arm_dpm
*dpm
= &armv8
->dpm
;
2831 if (armv8
->debug_ap
)
2832 dap_put_ap(armv8
->debug_ap
);
2834 armv8_free_reg_cache(target
);
2835 free(aarch64
->brp_list
);
2838 free(target
->private_config
);
2842 static int aarch64_mmu(struct target
*target
, int *enabled
)
2844 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
2845 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
2846 if (target
->state
!= TARGET_HALTED
) {
2847 LOG_TARGET_ERROR(target
, "not halted");
2848 return ERROR_TARGET_NOT_HALTED
;
2850 if (armv8
->is_armv8r
)
2853 *enabled
= target_to_aarch64(target
)->armv8_common
.armv8_mmu
.mmu_enabled
;
2857 static int aarch64_virt2phys(struct target
*target
, target_addr_t virt
,
2858 target_addr_t
*phys
)
2860 return armv8_mmu_translate_va_pa(target
, virt
, phys
, 1);
2864 * private target configuration items
2866 enum aarch64_cfg_param
{
2870 static const struct jim_nvp nvp_config_opts
[] = {
2871 { .name
= "-cti", .value
= CFG_CTI
},
2872 { .name
= NULL
, .value
= -1 }
2875 static int aarch64_jim_configure(struct target
*target
, struct jim_getopt_info
*goi
)
2877 struct aarch64_private_config
*pc
;
2881 pc
= (struct aarch64_private_config
*)target
->private_config
;
2883 pc
= calloc(1, sizeof(struct aarch64_private_config
));
2884 pc
->adiv5_config
.ap_num
= DP_APSEL_INVALID
;
2885 target
->private_config
= pc
;
2889 * Call adiv5_jim_configure() to parse the common DAP options
2890 * It will return JIM_CONTINUE if it didn't find any known
2891 * options, JIM_OK if it correctly parsed the topmost option
2892 * and JIM_ERR if an error occurred during parameter evaluation.
2893 * For JIM_CONTINUE, we check our own params.
2895 * adiv5_jim_configure() assumes 'private_config' to point to
2896 * 'struct adiv5_private_config'. Override 'private_config'!
2898 target
->private_config
= &pc
->adiv5_config
;
2899 e
= adiv5_jim_configure(target
, goi
);
2900 target
->private_config
= pc
;
2901 if (e
!= JIM_CONTINUE
)
2904 /* parse config or cget options ... */
2905 if (goi
->argc
> 0) {
2906 Jim_SetEmptyResult(goi
->interp
);
2908 /* check first if topmost item is for us */
2909 e
= jim_nvp_name2value_obj(goi
->interp
, nvp_config_opts
,
2912 return JIM_CONTINUE
;
2914 e
= jim_getopt_obj(goi
, NULL
);
2920 if (goi
->isconfigure
) {
2922 struct arm_cti
*cti
;
2923 e
= jim_getopt_obj(goi
, &o_cti
);
2926 cti
= cti_instance_by_jim_obj(goi
->interp
, o_cti
);
2928 Jim_SetResultString(goi
->interp
, "CTI name invalid!", -1);
2933 if (goi
->argc
!= 0) {
2934 Jim_WrongNumArgs(goi
->interp
,
2935 goi
->argc
, goi
->argv
,
2940 if (!pc
|| !pc
->cti
) {
2941 Jim_SetResultString(goi
->interp
, "CTI not configured", -1);
2944 Jim_SetResultString(goi
->interp
, arm_cti_name(pc
->cti
), -1);
2950 return JIM_CONTINUE
;
2957 COMMAND_HANDLER(aarch64_handle_cache_info_command
)
2959 struct target
*target
= get_current_target(CMD_CTX
);
2960 struct armv8_common
*armv8
= target_to_armv8(target
);
2962 return armv8_handle_cache_info_command(CMD
,
2963 &armv8
->armv8_mmu
.armv8_cache
);
2966 COMMAND_HANDLER(aarch64_handle_dbginit_command
)
2968 struct target
*target
= get_current_target(CMD_CTX
);
2969 if (!target_was_examined(target
)) {
2970 LOG_ERROR("target not examined yet");
2974 return aarch64_init_debug_access(target
);
2977 COMMAND_HANDLER(aarch64_handle_disassemble_command
)
2979 struct target
*target
= get_current_target(CMD_CTX
);
2982 LOG_ERROR("No target selected");
2986 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
2988 if (aarch64
->common_magic
!= AARCH64_COMMON_MAGIC
) {
2989 command_print(CMD
, "current target isn't an AArch64");
2994 target_addr_t address
;
2998 COMMAND_PARSE_NUMBER(int, CMD_ARGV
[1], count
);
3001 COMMAND_PARSE_ADDRESS(CMD_ARGV
[0], address
);
3004 return ERROR_COMMAND_SYNTAX_ERROR
;
3007 return a64_disassemble(CMD
, target
, address
, count
);
3010 COMMAND_HANDLER(aarch64_mask_interrupts_command
)
3012 struct target
*target
= get_current_target(CMD_CTX
);
3013 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
3015 static const struct nvp nvp_maskisr_modes
[] = {
3016 { .name
= "off", .value
= AARCH64_ISRMASK_OFF
},
3017 { .name
= "on", .value
= AARCH64_ISRMASK_ON
},
3018 { .name
= NULL
, .value
= -1 },
3020 const struct nvp
*n
;
3023 n
= nvp_name2value(nvp_maskisr_modes
, CMD_ARGV
[0]);
3025 LOG_ERROR("Unknown parameter: %s - should be off or on", CMD_ARGV
[0]);
3026 return ERROR_COMMAND_SYNTAX_ERROR
;
3029 aarch64
->isrmasking_mode
= n
->value
;
3032 n
= nvp_value2name(nvp_maskisr_modes
, aarch64
->isrmasking_mode
);
3033 command_print(CMD
, "aarch64 interrupt mask %s", n
->name
);
3038 COMMAND_HANDLER(aarch64_mcrmrc_command
)
3040 bool is_mcr
= false;
3041 unsigned int arg_cnt
= 5;
3043 if (!strcmp(CMD_NAME
, "mcr")) {
3048 if (arg_cnt
!= CMD_ARGC
)
3049 return ERROR_COMMAND_SYNTAX_ERROR
;
3051 struct target
*target
= get_current_target(CMD_CTX
);
3053 command_print(CMD
, "no current target");
3056 if (!target_was_examined(target
)) {
3057 command_print(CMD
, "%s: not yet examined", target_name(target
));
3058 return ERROR_TARGET_NOT_EXAMINED
;
3061 struct arm
*arm
= target_to_arm(target
);
3063 command_print(CMD
, "%s: not an ARM", target_name(target
));
3067 if (target
->state
!= TARGET_HALTED
) {
3068 command_print(CMD
, "Error: [%s] not halted", target_name(target
));
3069 return ERROR_TARGET_NOT_HALTED
;
3072 if (arm
->core_state
== ARM_STATE_AARCH64
) {
3073 command_print(CMD
, "%s: not 32-bit arm target", target_name(target
));
3084 /* NOTE: parameter sequence matches ARM instruction set usage:
3085 * MCR pNUM, op1, rX, CRn, CRm, op2 ; write CP from rX
3086 * MRC pNUM, op1, rX, CRn, CRm, op2 ; read CP into rX
3087 * The "rX" is necessarily omitted; it uses Tcl mechanisms.
3089 COMMAND_PARSE_NUMBER(int, CMD_ARGV
[0], cpnum
);
3091 command_print(CMD
, "coprocessor %d out of range", cpnum
);
3092 return ERROR_COMMAND_ARGUMENT_INVALID
;
3095 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[1], op1
);
3097 command_print(CMD
, "op1 %d out of range", op1
);
3098 return ERROR_COMMAND_ARGUMENT_INVALID
;
3101 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[2], crn
);
3103 command_print(CMD
, "CRn %d out of range", crn
);
3104 return ERROR_COMMAND_ARGUMENT_INVALID
;
3107 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[3], crm
);
3109 command_print(CMD
, "CRm %d out of range", crm
);
3110 return ERROR_COMMAND_ARGUMENT_INVALID
;
3113 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[4], op2
);
3115 command_print(CMD
, "op2 %d out of range", op2
);
3116 return ERROR_COMMAND_ARGUMENT_INVALID
;
3120 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[5], value
);
3122 /* NOTE: parameters reordered! */
3123 /* ARMV4_5_MCR(cpnum, op1, 0, crn, crm, op2) */
3124 int retval
= arm
->mcr(target
, cpnum
, op1
, op2
, crn
, crm
, value
);
3125 if (retval
!= ERROR_OK
)
3129 /* NOTE: parameters reordered! */
3130 /* ARMV4_5_MRC(cpnum, op1, 0, crn, crm, op2) */
3131 int retval
= arm
->mrc(target
, cpnum
, op1
, op2
, crn
, crm
, &value
);
3132 if (retval
!= ERROR_OK
)
3135 command_print(CMD
, "0x%" PRIx32
, value
);
3141 static const struct command_registration aarch64_exec_command_handlers
[] = {
3143 .name
= "cache_info",
3144 .handler
= aarch64_handle_cache_info_command
,
3145 .mode
= COMMAND_EXEC
,
3146 .help
= "display information about target caches",
3151 .handler
= aarch64_handle_dbginit_command
,
3152 .mode
= COMMAND_EXEC
,
3153 .help
= "Initialize core debug",
3157 .name
= "disassemble",
3158 .handler
= aarch64_handle_disassemble_command
,
3159 .mode
= COMMAND_EXEC
,
3160 .help
= "Disassemble instructions",
3161 .usage
= "address [count]",
3165 .handler
= aarch64_mask_interrupts_command
,
3166 .mode
= COMMAND_ANY
,
3167 .help
= "mask aarch64 interrupts during single-step",
3168 .usage
= "['on'|'off']",
3172 .mode
= COMMAND_EXEC
,
3173 .handler
= aarch64_mcrmrc_command
,
3174 .help
= "write coprocessor register",
3175 .usage
= "cpnum op1 CRn CRm op2 value",
3179 .mode
= COMMAND_EXEC
,
3180 .handler
= aarch64_mcrmrc_command
,
3181 .help
= "read coprocessor register",
3182 .usage
= "cpnum op1 CRn CRm op2",
3185 .chain
= smp_command_handlers
,
3189 COMMAND_REGISTRATION_DONE
3192 static const struct command_registration aarch64_command_handlers
[] = {
3195 .mode
= COMMAND_ANY
,
3196 .help
= "ARM Command Group",
3198 .chain
= semihosting_common_handlers
3201 .chain
= armv8_command_handlers
,
3205 .mode
= COMMAND_ANY
,
3206 .help
= "Aarch64 command group",
3208 .chain
= aarch64_exec_command_handlers
,
3210 COMMAND_REGISTRATION_DONE
3213 struct target_type aarch64_target
= {
3216 .poll
= aarch64_poll
,
3217 .arch_state
= armv8_arch_state
,
3219 .halt
= aarch64_halt
,
3220 .resume
= aarch64_resume
,
3221 .step
= aarch64_step
,
3223 .assert_reset
= aarch64_assert_reset
,
3224 .deassert_reset
= aarch64_deassert_reset
,
3226 /* REVISIT allow exporting VFP3 registers ... */
3227 .get_gdb_arch
= armv8_get_gdb_arch
,
3228 .get_gdb_reg_list
= armv8_get_gdb_reg_list
,
3230 .read_memory
= aarch64_read_memory
,
3231 .write_memory
= aarch64_write_memory
,
3233 .add_breakpoint
= aarch64_add_breakpoint
,
3234 .add_context_breakpoint
= aarch64_add_context_breakpoint
,
3235 .add_hybrid_breakpoint
= aarch64_add_hybrid_breakpoint
,
3236 .remove_breakpoint
= aarch64_remove_breakpoint
,
3237 .add_watchpoint
= aarch64_add_watchpoint
,
3238 .remove_watchpoint
= aarch64_remove_watchpoint
,
3239 .hit_watchpoint
= aarch64_hit_watchpoint
,
3241 .commands
= aarch64_command_handlers
,
3242 .target_create
= aarch64_target_create
,
3243 .target_jim_configure
= aarch64_jim_configure
,
3244 .init_target
= aarch64_init_target
,
3245 .deinit_target
= aarch64_deinit_target
,
3246 .examine
= aarch64_examine
,
3248 .read_phys_memory
= aarch64_read_phys_memory
,
3249 .write_phys_memory
= aarch64_write_phys_memory
,
3251 .virt2phys
= aarch64_virt2phys
,
3254 struct target_type armv8r_target
= {
3257 .poll
= aarch64_poll
,
3258 .arch_state
= armv8_arch_state
,
3260 .halt
= aarch64_halt
,
3261 .resume
= aarch64_resume
,
3262 .step
= aarch64_step
,
3264 .assert_reset
= aarch64_assert_reset
,
3265 .deassert_reset
= aarch64_deassert_reset
,
3267 /* REVISIT allow exporting VFP3 registers ... */
3268 .get_gdb_arch
= armv8_get_gdb_arch
,
3269 .get_gdb_reg_list
= armv8_get_gdb_reg_list
,
3271 .read_memory
= aarch64_read_phys_memory
,
3272 .write_memory
= aarch64_write_phys_memory
,
3274 .add_breakpoint
= aarch64_add_breakpoint
,
3275 .add_context_breakpoint
= aarch64_add_context_breakpoint
,
3276 .add_hybrid_breakpoint
= aarch64_add_hybrid_breakpoint
,
3277 .remove_breakpoint
= aarch64_remove_breakpoint
,
3278 .add_watchpoint
= aarch64_add_watchpoint
,
3279 .remove_watchpoint
= aarch64_remove_watchpoint
,
3280 .hit_watchpoint
= aarch64_hit_watchpoint
,
3282 .commands
= aarch64_command_handlers
,
3283 .target_create
= armv8r_target_create
,
3284 .target_jim_configure
= aarch64_jim_configure
,
3285 .init_target
= aarch64_init_target
,
3286 .deinit_target
= aarch64_deinit_target
,
3287 .examine
= aarch64_examine
,