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);
97 instr
= ARMV4_5_MCR(15, 0, 0, 1, 0, 0);
101 LOG_ERROR("cannot read system control register in this mode: (%s : 0x%x)",
102 armv8_mode_name(armv8
->arm
.core_mode
), armv8
->arm
.core_mode
);
106 if (target_mode
!= ARM_MODE_ANY
)
107 armv8_dpm_modeswitch(&armv8
->dpm
, target_mode
);
109 retval
= armv8
->dpm
.instr_write_data_r0_64(&armv8
->dpm
, instr
, aarch64
->system_control_reg
);
110 if (retval
!= ERROR_OK
)
113 if (target_mode
!= ARM_MODE_ANY
)
114 armv8_dpm_modeswitch(&armv8
->dpm
, ARM_MODE_ANY
);
120 /* modify system_control_reg in order to enable or disable mmu for :
121 * - virt2phys address conversion
122 * - read or write memory in phys or virt address */
123 static int aarch64_mmu_modify(struct target
*target
, int enable
)
125 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
126 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
127 int retval
= ERROR_OK
;
128 enum arm_mode target_mode
= ARM_MODE_ANY
;
132 /* if mmu enabled at target stop and mmu not enable */
133 if (!(aarch64
->system_control_reg
& 0x1U
)) {
134 LOG_ERROR("trying to enable mmu on target stopped with mmu disable");
137 if (!(aarch64
->system_control_reg_curr
& 0x1U
))
138 aarch64
->system_control_reg_curr
|= 0x1U
;
140 if (aarch64
->system_control_reg_curr
& 0x4U
) {
141 /* data cache is active */
142 aarch64
->system_control_reg_curr
&= ~0x4U
;
143 /* flush data cache armv8 function to be called */
144 if (armv8
->armv8_mmu
.armv8_cache
.flush_all_data_cache
)
145 armv8
->armv8_mmu
.armv8_cache
.flush_all_data_cache(target
);
147 if ((aarch64
->system_control_reg_curr
& 0x1U
)) {
148 aarch64
->system_control_reg_curr
&= ~0x1U
;
152 switch (armv8
->arm
.core_mode
) {
154 target_mode
= ARMV8_64_EL1H
;
158 instr
= ARMV8_MSR_GP(SYSTEM_SCTLR_EL1
, 0);
162 instr
= ARMV8_MSR_GP(SYSTEM_SCTLR_EL2
, 0);
166 instr
= ARMV8_MSR_GP(SYSTEM_SCTLR_EL3
, 0);
177 instr
= ARMV4_5_MCR(15, 0, 0, 1, 0, 0);
181 LOG_DEBUG("unknown cpu state 0x%x", armv8
->arm
.core_mode
);
184 if (target_mode
!= ARM_MODE_ANY
)
185 armv8_dpm_modeswitch(&armv8
->dpm
, target_mode
);
187 retval
= armv8
->dpm
.instr_write_data_r0_64(&armv8
->dpm
, instr
,
188 aarch64
->system_control_reg_curr
);
190 if (target_mode
!= ARM_MODE_ANY
)
191 armv8_dpm_modeswitch(&armv8
->dpm
, ARM_MODE_ANY
);
197 * Basic debug access, very low level assumes state is saved
199 static int aarch64_init_debug_access(struct target
*target
)
201 struct armv8_common
*armv8
= target_to_armv8(target
);
205 LOG_DEBUG("%s", target_name(target
));
207 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
208 armv8
->debug_base
+ CPUV8_DBG_OSLAR
, 0);
209 if (retval
!= ERROR_OK
) {
210 LOG_DEBUG("Examine %s failed", "oslock");
214 /* Clear Sticky Power Down status Bit in PRSR to enable access to
215 the registers in the Core Power Domain */
216 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
217 armv8
->debug_base
+ CPUV8_DBG_PRSR
, &dummy
);
218 if (retval
!= ERROR_OK
)
222 * Static CTI configuration:
223 * Channel 0 -> trigger outputs HALT request to PE
224 * Channel 1 -> trigger outputs Resume request to PE
225 * Gate all channel trigger events from entering the CTM
229 retval
= arm_cti_enable(armv8
->cti
, true);
230 /* By default, gate all channel events to and from the CTM */
231 if (retval
== ERROR_OK
)
232 retval
= arm_cti_write_reg(armv8
->cti
, CTI_GATE
, 0);
233 /* output halt requests to PE on channel 0 event */
234 if (retval
== ERROR_OK
)
235 retval
= arm_cti_write_reg(armv8
->cti
, CTI_OUTEN0
, CTI_CHNL(0));
236 /* output restart requests to PE on channel 1 event */
237 if (retval
== ERROR_OK
)
238 retval
= arm_cti_write_reg(armv8
->cti
, CTI_OUTEN1
, CTI_CHNL(1));
239 if (retval
!= ERROR_OK
)
242 /* Resync breakpoint registers */
247 /* Write to memory mapped registers directly with no cache or mmu handling */
248 static int aarch64_dap_write_memap_register_u32(struct target
*target
,
249 target_addr_t address
,
253 struct armv8_common
*armv8
= target_to_armv8(target
);
255 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
, address
, value
);
260 static int aarch64_dpm_setup(struct aarch64_common
*a8
, uint64_t debug
)
262 struct arm_dpm
*dpm
= &a8
->armv8_common
.dpm
;
265 dpm
->arm
= &a8
->armv8_common
.arm
;
268 retval
= armv8_dpm_setup(dpm
);
269 if (retval
== ERROR_OK
)
270 retval
= armv8_dpm_initialize(dpm
);
275 static int aarch64_set_dscr_bits(struct target
*target
, unsigned long bit_mask
, unsigned long value
)
277 struct armv8_common
*armv8
= target_to_armv8(target
);
278 return armv8_set_dbgreg_bits(armv8
, CPUV8_DBG_DSCR
, bit_mask
, value
);
281 static int aarch64_check_state_one(struct target
*target
,
282 uint32_t mask
, uint32_t val
, int *p_result
, uint32_t *p_prsr
)
284 struct armv8_common
*armv8
= target_to_armv8(target
);
288 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
289 armv8
->debug_base
+ CPUV8_DBG_PRSR
, &prsr
);
290 if (retval
!= ERROR_OK
)
297 *p_result
= (prsr
& mask
) == (val
& mask
);
302 static int aarch64_wait_halt_one(struct target
*target
)
304 int retval
= ERROR_OK
;
307 int64_t then
= timeval_ms();
311 retval
= aarch64_check_state_one(target
, PRSR_HALT
, PRSR_HALT
, &halted
, &prsr
);
312 if (retval
!= ERROR_OK
|| halted
)
315 if (timeval_ms() > then
+ 1000) {
316 retval
= ERROR_TARGET_TIMEOUT
;
317 LOG_DEBUG("target %s timeout, prsr=0x%08"PRIx32
, target_name(target
), prsr
);
324 static int aarch64_prepare_halt_smp(struct target
*target
, bool exc_target
, struct target
**p_first
)
326 int retval
= ERROR_OK
;
327 struct target_list
*head
;
328 struct target
*first
= NULL
;
330 LOG_DEBUG("target %s exc %i", target_name(target
), exc_target
);
332 foreach_smp_target(head
, target
->smp_targets
) {
333 struct target
*curr
= head
->target
;
334 struct armv8_common
*armv8
= target_to_armv8(curr
);
336 if (exc_target
&& curr
== target
)
338 if (!target_was_examined(curr
))
340 if (curr
->state
!= TARGET_RUNNING
)
343 /* HACK: mark this target as prepared for halting */
344 curr
->debug_reason
= DBG_REASON_DBGRQ
;
346 /* open the gate for channel 0 to let HALT requests pass to the CTM */
347 retval
= arm_cti_ungate_channel(armv8
->cti
, 0);
348 if (retval
== ERROR_OK
)
349 retval
= aarch64_set_dscr_bits(curr
, DSCR_HDE
, DSCR_HDE
);
350 if (retval
!= ERROR_OK
)
353 LOG_DEBUG("target %s prepared", target_name(curr
));
360 if (exc_target
&& first
)
369 static int aarch64_halt_one(struct target
*target
, enum halt_mode mode
)
371 int retval
= ERROR_OK
;
372 struct armv8_common
*armv8
= target_to_armv8(target
);
374 LOG_DEBUG("%s", target_name(target
));
376 /* allow Halting Debug Mode */
377 retval
= aarch64_set_dscr_bits(target
, DSCR_HDE
, DSCR_HDE
);
378 if (retval
!= ERROR_OK
)
381 /* trigger an event on channel 0, this outputs a halt request to the PE */
382 retval
= arm_cti_pulse_channel(armv8
->cti
, 0);
383 if (retval
!= ERROR_OK
)
386 if (mode
== HALT_SYNC
) {
387 retval
= aarch64_wait_halt_one(target
);
388 if (retval
!= ERROR_OK
) {
389 if (retval
== ERROR_TARGET_TIMEOUT
)
390 LOG_ERROR("Timeout waiting for target %s halt", target_name(target
));
398 static int aarch64_halt_smp(struct target
*target
, bool exc_target
)
400 struct target
*next
= target
;
403 /* prepare halt on all PEs of the group */
404 retval
= aarch64_prepare_halt_smp(target
, exc_target
, &next
);
406 if (exc_target
&& next
== target
)
409 /* halt the target PE */
410 if (retval
== ERROR_OK
)
411 retval
= aarch64_halt_one(next
, HALT_LAZY
);
413 if (retval
!= ERROR_OK
)
416 /* wait for all PEs to halt */
417 int64_t then
= timeval_ms();
419 bool all_halted
= true;
420 struct target_list
*head
;
423 foreach_smp_target(head
, target
->smp_targets
) {
428 if (!target_was_examined(curr
))
431 retval
= aarch64_check_state_one(curr
, PRSR_HALT
, PRSR_HALT
, &halted
, NULL
);
432 if (retval
!= ERROR_OK
|| !halted
) {
441 if (timeval_ms() > then
+ 1000) {
442 retval
= ERROR_TARGET_TIMEOUT
;
447 * HACK: on Hi6220 there are 8 cores organized in 2 clusters
448 * and it looks like the CTI's are not connected by a common
449 * trigger matrix. It seems that we need to halt one core in each
450 * cluster explicitly. So if we find that a core has not halted
451 * yet, we trigger an explicit halt for the second cluster.
453 retval
= aarch64_halt_one(curr
, HALT_LAZY
);
454 if (retval
!= ERROR_OK
)
461 static int update_halt_gdb(struct target
*target
, enum target_debug_reason debug_reason
)
463 struct target
*gdb_target
= NULL
;
464 struct target_list
*head
;
467 if (debug_reason
== DBG_REASON_NOTHALTED
) {
468 LOG_DEBUG("Halting remaining targets in SMP group");
469 aarch64_halt_smp(target
, true);
472 /* poll all targets in the group, but skip the target that serves GDB */
473 foreach_smp_target(head
, target
->smp_targets
) {
475 /* skip calling context */
478 if (!target_was_examined(curr
))
480 /* skip targets that were already halted */
481 if (curr
->state
== TARGET_HALTED
)
483 /* remember the gdb_service->target */
484 if (curr
->gdb_service
)
485 gdb_target
= curr
->gdb_service
->target
;
487 if (curr
== gdb_target
)
490 /* avoid recursion in aarch64_poll() */
496 /* after all targets were updated, poll the gdb serving target */
497 if (gdb_target
&& gdb_target
!= target
)
498 aarch64_poll(gdb_target
);
504 * Aarch64 Run control
507 static int aarch64_poll(struct target
*target
)
509 enum target_state prev_target_state
;
510 int retval
= ERROR_OK
;
513 retval
= aarch64_check_state_one(target
,
514 PRSR_HALT
, PRSR_HALT
, &halted
, NULL
);
515 if (retval
!= ERROR_OK
)
519 prev_target_state
= target
->state
;
520 if (prev_target_state
!= TARGET_HALTED
) {
521 enum target_debug_reason debug_reason
= target
->debug_reason
;
523 /* We have a halting debug event */
524 target
->state
= TARGET_HALTED
;
525 LOG_DEBUG("Target %s halted", target_name(target
));
526 retval
= aarch64_debug_entry(target
);
527 if (retval
!= ERROR_OK
)
531 update_halt_gdb(target
, debug_reason
);
533 if (arm_semihosting(target
, &retval
) != 0)
536 switch (prev_target_state
) {
540 target_call_event_callbacks(target
, TARGET_EVENT_HALTED
);
542 case TARGET_DEBUG_RUNNING
:
543 target_call_event_callbacks(target
, TARGET_EVENT_DEBUG_HALTED
);
550 target
->state
= TARGET_RUNNING
;
555 static int aarch64_halt(struct target
*target
)
557 struct armv8_common
*armv8
= target_to_armv8(target
);
558 armv8
->last_run_control_op
= ARMV8_RUNCONTROL_HALT
;
561 return aarch64_halt_smp(target
, false);
563 return aarch64_halt_one(target
, HALT_SYNC
);
566 static int aarch64_restore_one(struct target
*target
, int current
,
567 uint64_t *address
, int handle_breakpoints
, int debug_execution
)
569 struct armv8_common
*armv8
= target_to_armv8(target
);
570 struct arm
*arm
= &armv8
->arm
;
574 LOG_DEBUG("%s", target_name(target
));
576 if (!debug_execution
)
577 target_free_all_working_areas(target
);
579 /* current = 1: continue on current pc, otherwise continue at <address> */
580 resume_pc
= buf_get_u64(arm
->pc
->value
, 0, 64);
582 resume_pc
= *address
;
584 *address
= resume_pc
;
586 /* Make sure that the Armv7 gdb thumb fixups does not
587 * kill the return address
589 switch (arm
->core_state
) {
591 resume_pc
&= 0xFFFFFFFC;
593 case ARM_STATE_AARCH64
:
594 resume_pc
&= 0xFFFFFFFFFFFFFFFCULL
;
596 case ARM_STATE_THUMB
:
597 case ARM_STATE_THUMB_EE
:
598 /* When the return address is loaded into PC
599 * bit 0 must be 1 to stay in Thumb state
603 case ARM_STATE_JAZELLE
:
604 LOG_ERROR("How do I resume into Jazelle state??");
607 LOG_DEBUG("resume pc = 0x%016" PRIx64
, resume_pc
);
608 buf_set_u64(arm
->pc
->value
, 0, 64, resume_pc
);
609 arm
->pc
->dirty
= true;
610 arm
->pc
->valid
= true;
612 /* called it now before restoring context because it uses cpu
613 * register r0 for restoring system control register */
614 retval
= aarch64_restore_system_control_reg(target
);
615 if (retval
== ERROR_OK
)
616 retval
= aarch64_restore_context(target
, handle_breakpoints
);
622 * prepare single target for restart
626 static int aarch64_prepare_restart_one(struct target
*target
)
628 struct armv8_common
*armv8
= target_to_armv8(target
);
633 LOG_DEBUG("%s", target_name(target
));
635 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
636 armv8
->debug_base
+ CPUV8_DBG_DSCR
, &dscr
);
637 if (retval
!= ERROR_OK
)
640 if ((dscr
& DSCR_ITE
) == 0)
641 LOG_ERROR("DSCR.ITE must be set before leaving debug!");
642 if ((dscr
& DSCR_ERR
) != 0)
643 LOG_ERROR("DSCR.ERR must be cleared before leaving debug!");
645 /* acknowledge a pending CTI halt event */
646 retval
= arm_cti_ack_events(armv8
->cti
, CTI_TRIG(HALT
));
648 * open the CTI gate for channel 1 so that the restart events
649 * get passed along to all PEs. Also close gate for channel 0
650 * to isolate the PE from halt events.
652 if (retval
== ERROR_OK
)
653 retval
= arm_cti_ungate_channel(armv8
->cti
, 1);
654 if (retval
== ERROR_OK
)
655 retval
= arm_cti_gate_channel(armv8
->cti
, 0);
657 /* make sure that DSCR.HDE is set */
658 if (retval
== ERROR_OK
) {
660 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
661 armv8
->debug_base
+ CPUV8_DBG_DSCR
, dscr
);
664 if (retval
== ERROR_OK
) {
665 /* clear sticky bits in PRSR, SDR is now 0 */
666 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
667 armv8
->debug_base
+ CPUV8_DBG_PRSR
, &tmp
);
673 static int aarch64_do_restart_one(struct target
*target
, enum restart_mode mode
)
675 struct armv8_common
*armv8
= target_to_armv8(target
);
678 LOG_DEBUG("%s", target_name(target
));
680 /* trigger an event on channel 1, generates a restart request to the PE */
681 retval
= arm_cti_pulse_channel(armv8
->cti
, 1);
682 if (retval
!= ERROR_OK
)
685 if (mode
== RESTART_SYNC
) {
686 int64_t then
= timeval_ms();
690 * if PRSR.SDR is set now, the target did restart, even
691 * if it's now already halted again (e.g. due to breakpoint)
693 retval
= aarch64_check_state_one(target
,
694 PRSR_SDR
, PRSR_SDR
, &resumed
, NULL
);
695 if (retval
!= ERROR_OK
|| resumed
)
698 if (timeval_ms() > then
+ 1000) {
699 LOG_ERROR("%s: Timeout waiting for resume"PRIx32
, target_name(target
));
700 retval
= ERROR_TARGET_TIMEOUT
;
706 if (retval
!= ERROR_OK
)
709 target
->debug_reason
= DBG_REASON_NOTHALTED
;
710 target
->state
= TARGET_RUNNING
;
715 static int aarch64_restart_one(struct target
*target
, enum restart_mode mode
)
719 LOG_DEBUG("%s", target_name(target
));
721 retval
= aarch64_prepare_restart_one(target
);
722 if (retval
== ERROR_OK
)
723 retval
= aarch64_do_restart_one(target
, mode
);
729 * prepare all but the current target for restart
731 static int aarch64_prep_restart_smp(struct target
*target
, int handle_breakpoints
, struct target
**p_first
)
733 int retval
= ERROR_OK
;
734 struct target_list
*head
;
735 struct target
*first
= NULL
;
738 foreach_smp_target(head
, target
->smp_targets
) {
739 struct target
*curr
= head
->target
;
741 /* skip calling target */
744 if (!target_was_examined(curr
))
746 if (curr
->state
!= TARGET_HALTED
)
749 /* resume at current address, not in step mode */
750 retval
= aarch64_restore_one(curr
, 1, &address
, handle_breakpoints
, 0);
751 if (retval
== ERROR_OK
)
752 retval
= aarch64_prepare_restart_one(curr
);
753 if (retval
!= ERROR_OK
) {
754 LOG_ERROR("failed to restore target %s", target_name(curr
));
757 /* remember the first valid target in the group */
769 static int aarch64_step_restart_smp(struct target
*target
)
771 int retval
= ERROR_OK
;
772 struct target_list
*head
;
773 struct target
*first
= NULL
;
775 LOG_DEBUG("%s", target_name(target
));
777 retval
= aarch64_prep_restart_smp(target
, 0, &first
);
778 if (retval
!= ERROR_OK
)
782 retval
= aarch64_do_restart_one(first
, RESTART_LAZY
);
783 if (retval
!= ERROR_OK
) {
784 LOG_DEBUG("error restarting target %s", target_name(first
));
788 int64_t then
= timeval_ms();
790 struct target
*curr
= target
;
791 bool all_resumed
= true;
793 foreach_smp_target(head
, target
->smp_targets
) {
802 if (!target_was_examined(curr
))
805 retval
= aarch64_check_state_one(curr
,
806 PRSR_SDR
, PRSR_SDR
, &resumed
, &prsr
);
807 if (retval
!= ERROR_OK
|| (!resumed
&& (prsr
& PRSR_HALT
))) {
812 if (curr
->state
!= TARGET_RUNNING
) {
813 curr
->state
= TARGET_RUNNING
;
814 curr
->debug_reason
= DBG_REASON_NOTHALTED
;
815 target_call_event_callbacks(curr
, TARGET_EVENT_RESUMED
);
822 if (timeval_ms() > then
+ 1000) {
823 LOG_ERROR("%s: timeout waiting for target resume", __func__
);
824 retval
= ERROR_TARGET_TIMEOUT
;
828 * HACK: on Hi6220 there are 8 cores organized in 2 clusters
829 * and it looks like the CTI's are not connected by a common
830 * trigger matrix. It seems that we need to halt one core in each
831 * cluster explicitly. So if we find that a core has not halted
832 * yet, we trigger an explicit resume for the second cluster.
834 retval
= aarch64_do_restart_one(curr
, RESTART_LAZY
);
835 if (retval
!= ERROR_OK
)
842 static int aarch64_resume(struct target
*target
, int current
,
843 target_addr_t address
, int handle_breakpoints
, int debug_execution
)
846 uint64_t addr
= address
;
848 struct armv8_common
*armv8
= target_to_armv8(target
);
849 armv8
->last_run_control_op
= ARMV8_RUNCONTROL_RESUME
;
851 if (target
->state
!= TARGET_HALTED
) {
852 LOG_TARGET_ERROR(target
, "not halted");
853 return ERROR_TARGET_NOT_HALTED
;
857 * If this target is part of a SMP group, prepare the others
858 * targets for resuming. This involves restoring the complete
859 * target register context and setting up CTI gates to accept
860 * resume events from the trigger matrix.
863 retval
= aarch64_prep_restart_smp(target
, handle_breakpoints
, NULL
);
864 if (retval
!= ERROR_OK
)
868 /* all targets prepared, restore and restart the current target */
869 retval
= aarch64_restore_one(target
, current
, &addr
, handle_breakpoints
,
871 if (retval
== ERROR_OK
)
872 retval
= aarch64_restart_one(target
, RESTART_SYNC
);
873 if (retval
!= ERROR_OK
)
877 int64_t then
= timeval_ms();
879 struct target
*curr
= target
;
880 struct target_list
*head
;
881 bool all_resumed
= true;
883 foreach_smp_target(head
, target
->smp_targets
) {
890 if (!target_was_examined(curr
))
893 retval
= aarch64_check_state_one(curr
,
894 PRSR_SDR
, PRSR_SDR
, &resumed
, &prsr
);
895 if (retval
!= ERROR_OK
|| (!resumed
&& (prsr
& PRSR_HALT
))) {
900 if (curr
->state
!= TARGET_RUNNING
) {
901 curr
->state
= TARGET_RUNNING
;
902 curr
->debug_reason
= DBG_REASON_NOTHALTED
;
903 target_call_event_callbacks(curr
, TARGET_EVENT_RESUMED
);
910 if (timeval_ms() > then
+ 1000) {
911 LOG_ERROR("%s: timeout waiting for target %s to resume", __func__
, target_name(curr
));
912 retval
= ERROR_TARGET_TIMEOUT
;
917 * HACK: on Hi6220 there are 8 cores organized in 2 clusters
918 * and it looks like the CTI's are not connected by a common
919 * trigger matrix. It seems that we need to halt one core in each
920 * cluster explicitly. So if we find that a core has not halted
921 * yet, we trigger an explicit resume for the second cluster.
923 retval
= aarch64_do_restart_one(curr
, RESTART_LAZY
);
924 if (retval
!= ERROR_OK
)
929 if (retval
!= ERROR_OK
)
932 target
->debug_reason
= DBG_REASON_NOTHALTED
;
934 if (!debug_execution
) {
935 target
->state
= TARGET_RUNNING
;
936 target_call_event_callbacks(target
, TARGET_EVENT_RESUMED
);
937 LOG_DEBUG("target resumed at 0x%" PRIx64
, addr
);
939 target
->state
= TARGET_DEBUG_RUNNING
;
940 target_call_event_callbacks(target
, TARGET_EVENT_DEBUG_RESUMED
);
941 LOG_DEBUG("target debug resumed at 0x%" PRIx64
, addr
);
947 static int aarch64_debug_entry(struct target
*target
)
949 int retval
= ERROR_OK
;
950 struct armv8_common
*armv8
= target_to_armv8(target
);
951 struct arm_dpm
*dpm
= &armv8
->dpm
;
952 enum arm_state core_state
;
955 /* make sure to clear all sticky errors */
956 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
957 armv8
->debug_base
+ CPUV8_DBG_DRCR
, DRCR_CSE
);
958 if (retval
== ERROR_OK
)
959 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
960 armv8
->debug_base
+ CPUV8_DBG_DSCR
, &dscr
);
961 if (retval
== ERROR_OK
)
962 retval
= arm_cti_ack_events(armv8
->cti
, CTI_TRIG(HALT
));
964 if (retval
!= ERROR_OK
)
967 LOG_DEBUG("%s dscr = 0x%08" PRIx32
, target_name(target
), dscr
);
970 core_state
= armv8_dpm_get_core_state(dpm
);
971 armv8_select_opcodes(armv8
, core_state
== ARM_STATE_AARCH64
);
972 armv8_select_reg_access(armv8
, core_state
== ARM_STATE_AARCH64
);
974 /* close the CTI gate for all events */
975 if (retval
== ERROR_OK
)
976 retval
= arm_cti_write_reg(armv8
->cti
, CTI_GATE
, 0);
977 /* discard async exceptions */
978 if (retval
== ERROR_OK
)
979 retval
= dpm
->instr_cpsr_sync(dpm
);
980 if (retval
!= ERROR_OK
)
983 /* Examine debug reason */
984 armv8_dpm_report_dscr(dpm
, dscr
);
986 /* save the memory address that triggered the watchpoint */
987 if (target
->debug_reason
== DBG_REASON_WATCHPOINT
) {
990 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
991 armv8
->debug_base
+ CPUV8_DBG_EDWAR0
, &tmp
);
992 if (retval
!= ERROR_OK
)
994 target_addr_t edwar
= tmp
;
996 /* EDWAR[63:32] has unknown content in aarch32 state */
997 if (core_state
== ARM_STATE_AARCH64
) {
998 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
999 armv8
->debug_base
+ CPUV8_DBG_EDWAR1
, &tmp
);
1000 if (retval
!= ERROR_OK
)
1002 edwar
|= ((target_addr_t
)tmp
) << 32;
1005 armv8
->dpm
.wp_addr
= edwar
;
1008 retval
= armv8_dpm_read_current_registers(&armv8
->dpm
);
1010 if (retval
== ERROR_OK
&& armv8
->post_debug_entry
)
1011 retval
= armv8
->post_debug_entry(target
);
1016 static int aarch64_post_debug_entry(struct target
*target
)
1018 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1019 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
1021 enum arm_mode target_mode
= ARM_MODE_ANY
;
1024 switch (armv8
->arm
.core_mode
) {
1026 target_mode
= ARMV8_64_EL1H
;
1030 instr
= ARMV8_MRS(SYSTEM_SCTLR_EL1
, 0);
1034 instr
= ARMV8_MRS(SYSTEM_SCTLR_EL2
, 0);
1038 instr
= ARMV8_MRS(SYSTEM_SCTLR_EL3
, 0);
1049 instr
= ARMV4_5_MRC(15, 0, 0, 1, 0, 0);
1053 LOG_ERROR("cannot read system control register in this mode: (%s : 0x%x)",
1054 armv8_mode_name(armv8
->arm
.core_mode
), armv8
->arm
.core_mode
);
1058 if (target_mode
!= ARM_MODE_ANY
)
1059 armv8_dpm_modeswitch(&armv8
->dpm
, target_mode
);
1061 retval
= armv8
->dpm
.instr_read_data_r0_64(&armv8
->dpm
, instr
, &aarch64
->system_control_reg
);
1062 if (retval
!= ERROR_OK
)
1065 if (target_mode
!= ARM_MODE_ANY
)
1066 armv8_dpm_modeswitch(&armv8
->dpm
, ARM_MODE_ANY
);
1068 LOG_DEBUG("System_register: %8.8" PRIx64
, aarch64
->system_control_reg
);
1069 aarch64
->system_control_reg_curr
= aarch64
->system_control_reg
;
1071 if (armv8
->armv8_mmu
.armv8_cache
.info
== -1) {
1072 armv8_identify_cache(armv8
);
1073 armv8_read_mpidr(armv8
);
1075 if (armv8
->is_armv8r
) {
1076 armv8
->armv8_mmu
.mmu_enabled
= 0;
1078 armv8
->armv8_mmu
.mmu_enabled
=
1079 (aarch64
->system_control_reg
& 0x1U
) ? 1 : 0;
1081 armv8
->armv8_mmu
.armv8_cache
.d_u_cache_enabled
=
1082 (aarch64
->system_control_reg
& 0x4U
) ? 1 : 0;
1083 armv8
->armv8_mmu
.armv8_cache
.i_cache_enabled
=
1084 (aarch64
->system_control_reg
& 0x1000U
) ? 1 : 0;
1089 * single-step a target
1091 static int aarch64_step(struct target
*target
, int current
, target_addr_t address
,
1092 int handle_breakpoints
)
1094 struct armv8_common
*armv8
= target_to_armv8(target
);
1095 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1096 int saved_retval
= ERROR_OK
;
1101 armv8
->last_run_control_op
= ARMV8_RUNCONTROL_STEP
;
1103 if (target
->state
!= TARGET_HALTED
) {
1104 LOG_TARGET_ERROR(target
, "not halted");
1105 return ERROR_TARGET_NOT_HALTED
;
1108 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
1109 armv8
->debug_base
+ CPUV8_DBG_EDECR
, &edecr
);
1110 /* make sure EDECR.SS is not set when restoring the register */
1112 if (retval
== ERROR_OK
) {
1114 /* set EDECR.SS to enter hardware step mode */
1115 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
1116 armv8
->debug_base
+ CPUV8_DBG_EDECR
, (edecr
|0x4));
1118 /* disable interrupts while stepping */
1119 if (retval
== ERROR_OK
&& aarch64
->isrmasking_mode
== AARCH64_ISRMASK_ON
)
1120 retval
= aarch64_set_dscr_bits(target
, 0x3 << 22, 0x3 << 22);
1121 /* bail out if stepping setup has failed */
1122 if (retval
!= ERROR_OK
)
1125 if (target
->smp
&& (current
== 1)) {
1127 * isolate current target so that it doesn't get resumed
1128 * together with the others
1130 retval
= arm_cti_gate_channel(armv8
->cti
, 1);
1131 /* resume all other targets in the group */
1132 if (retval
== ERROR_OK
)
1133 retval
= aarch64_step_restart_smp(target
);
1134 if (retval
!= ERROR_OK
) {
1135 LOG_ERROR("Failed to restart non-stepping targets in SMP group");
1138 LOG_DEBUG("Restarted all non-stepping targets in SMP group");
1141 /* all other targets running, restore and restart the current target */
1142 retval
= aarch64_restore_one(target
, current
, &address
, 0, 0);
1143 if (retval
== ERROR_OK
)
1144 retval
= aarch64_restart_one(target
, RESTART_LAZY
);
1146 if (retval
!= ERROR_OK
)
1149 LOG_DEBUG("target step-resumed at 0x%" PRIx64
, address
);
1150 if (!handle_breakpoints
)
1151 target_call_event_callbacks(target
, TARGET_EVENT_RESUMED
);
1153 int64_t then
= timeval_ms();
1158 retval
= aarch64_check_state_one(target
,
1159 PRSR_SDR
|PRSR_HALT
, PRSR_SDR
|PRSR_HALT
, &stepped
, &prsr
);
1160 if (retval
!= ERROR_OK
|| stepped
)
1163 if (timeval_ms() > then
+ 100) {
1164 LOG_ERROR("timeout waiting for target %s halt after step",
1165 target_name(target
));
1166 retval
= ERROR_TARGET_TIMEOUT
;
1172 * At least on one SoC (Renesas R8A7795) stepping over a WFI instruction
1173 * causes a timeout. The core takes the step but doesn't complete it and so
1174 * debug state is never entered. However, you can manually halt the core
1175 * as an external debug even is also a WFI wakeup event.
1177 if (retval
== ERROR_TARGET_TIMEOUT
)
1178 saved_retval
= aarch64_halt_one(target
, HALT_SYNC
);
1180 poll_retval
= aarch64_poll(target
);
1183 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
1184 armv8
->debug_base
+ CPUV8_DBG_EDECR
, edecr
);
1185 if (retval
!= ERROR_OK
)
1188 /* restore interrupts */
1189 if (aarch64
->isrmasking_mode
== AARCH64_ISRMASK_ON
) {
1190 retval
= aarch64_set_dscr_bits(target
, 0x3 << 22, 0);
1191 if (retval
!= ERROR_OK
)
1195 if (saved_retval
!= ERROR_OK
)
1196 return saved_retval
;
1198 if (poll_retval
!= ERROR_OK
)
1204 static int aarch64_restore_context(struct target
*target
, bool bpwp
)
1206 struct armv8_common
*armv8
= target_to_armv8(target
);
1207 struct arm
*arm
= &armv8
->arm
;
1211 LOG_DEBUG("%s", target_name(target
));
1213 if (armv8
->pre_restore_context
)
1214 armv8
->pre_restore_context(target
);
1216 retval
= armv8_dpm_write_dirty_registers(&armv8
->dpm
, bpwp
);
1217 if (retval
== ERROR_OK
) {
1218 /* registers are now invalid */
1219 register_cache_invalidate(arm
->core_cache
);
1220 register_cache_invalidate(arm
->core_cache
->next
);
1227 * Cortex-A8 Breakpoint and watchpoint functions
1230 /* Setup hardware Breakpoint Register Pair */
1231 static int aarch64_set_breakpoint(struct target
*target
,
1232 struct breakpoint
*breakpoint
, uint8_t matchmode
)
1237 uint8_t byte_addr_select
= 0x0F;
1238 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1239 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
1240 struct aarch64_brp
*brp_list
= aarch64
->brp_list
;
1242 if (breakpoint
->is_set
) {
1243 LOG_WARNING("breakpoint already set");
1247 if (breakpoint
->type
== BKPT_HARD
) {
1249 while (brp_list
[brp_i
].used
&& (brp_i
< aarch64
->brp_num
))
1251 if (brp_i
>= aarch64
->brp_num
) {
1252 LOG_ERROR("ERROR Can not find free Breakpoint Register Pair");
1253 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1255 breakpoint_hw_set(breakpoint
, brp_i
);
1256 if (breakpoint
->length
== 2)
1257 byte_addr_select
= (3 << (breakpoint
->address
& 0x02));
1258 control
= ((matchmode
& 0x7) << 20)
1260 | (byte_addr_select
<< 5)
1262 brp_list
[brp_i
].used
= 1;
1263 brp_list
[brp_i
].value
= breakpoint
->address
& 0xFFFFFFFFFFFFFFFCULL
;
1264 brp_list
[brp_i
].control
= control
;
1265 bpt_value
= brp_list
[brp_i
].value
;
1267 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1268 + CPUV8_DBG_BVR_BASE
+ 16 * brp_list
[brp_i
].brpn
,
1269 (uint32_t)(bpt_value
& 0xFFFFFFFF));
1270 if (retval
!= ERROR_OK
)
1272 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1273 + CPUV8_DBG_BVR_BASE
+ 4 + 16 * brp_list
[brp_i
].brpn
,
1274 (uint32_t)(bpt_value
>> 32));
1275 if (retval
!= ERROR_OK
)
1278 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1279 + CPUV8_DBG_BCR_BASE
+ 16 * brp_list
[brp_i
].brpn
,
1280 brp_list
[brp_i
].control
);
1281 if (retval
!= ERROR_OK
)
1283 LOG_DEBUG("brp %i control 0x%0" PRIx32
" value 0x%" TARGET_PRIxADDR
, brp_i
,
1284 brp_list
[brp_i
].control
,
1285 brp_list
[brp_i
].value
);
1287 } else if (breakpoint
->type
== BKPT_SOFT
) {
1291 if (armv8_dpm_get_core_state(&armv8
->dpm
) == ARM_STATE_AARCH64
) {
1292 opcode
= ARMV8_HLT(11);
1294 if (breakpoint
->length
!= 4)
1295 LOG_ERROR("bug: breakpoint length should be 4 in AArch64 mode");
1298 * core_state is ARM_STATE_ARM
1299 * in that case the opcode depends on breakpoint length:
1300 * - if length == 4 => A32 opcode
1301 * - if length == 2 => T32 opcode
1302 * - if length == 3 => T32 opcode (refer to gdb doc : ARM-Breakpoint-Kinds)
1303 * in that case the length should be changed from 3 to 4 bytes
1305 opcode
= (breakpoint
->length
== 4) ? ARMV8_HLT_A1(11) :
1306 (uint32_t) (ARMV8_HLT_T1(11) | ARMV8_HLT_T1(11) << 16);
1308 if (breakpoint
->length
== 3)
1309 breakpoint
->length
= 4;
1312 buf_set_u32(code
, 0, 32, opcode
);
1314 retval
= target_read_memory(target
,
1315 breakpoint
->address
& 0xFFFFFFFFFFFFFFFEULL
,
1316 breakpoint
->length
, 1,
1317 breakpoint
->orig_instr
);
1318 if (retval
!= ERROR_OK
)
1321 armv8_cache_d_inner_flush_virt(armv8
,
1322 breakpoint
->address
& 0xFFFFFFFFFFFFFFFEULL
,
1323 breakpoint
->length
);
1325 retval
= target_write_memory(target
,
1326 breakpoint
->address
& 0xFFFFFFFFFFFFFFFEULL
,
1327 breakpoint
->length
, 1, code
);
1328 if (retval
!= ERROR_OK
)
1331 armv8_cache_d_inner_flush_virt(armv8
,
1332 breakpoint
->address
& 0xFFFFFFFFFFFFFFFEULL
,
1333 breakpoint
->length
);
1335 armv8_cache_i_inner_inval_virt(armv8
,
1336 breakpoint
->address
& 0xFFFFFFFFFFFFFFFEULL
,
1337 breakpoint
->length
);
1339 breakpoint
->is_set
= true;
1342 /* Ensure that halting debug mode is enable */
1343 retval
= aarch64_set_dscr_bits(target
, DSCR_HDE
, DSCR_HDE
);
1344 if (retval
!= ERROR_OK
) {
1345 LOG_DEBUG("Failed to set DSCR.HDE");
1352 static int aarch64_set_context_breakpoint(struct target
*target
,
1353 struct breakpoint
*breakpoint
, uint8_t matchmode
)
1355 int retval
= ERROR_FAIL
;
1358 uint8_t byte_addr_select
= 0x0F;
1359 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1360 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
1361 struct aarch64_brp
*brp_list
= aarch64
->brp_list
;
1363 if (breakpoint
->is_set
) {
1364 LOG_WARNING("breakpoint already set");
1367 /*check available context BRPs*/
1368 while ((brp_list
[brp_i
].used
||
1369 (brp_list
[brp_i
].type
!= BRP_CONTEXT
)) && (brp_i
< aarch64
->brp_num
))
1372 if (brp_i
>= aarch64
->brp_num
) {
1373 LOG_ERROR("ERROR Can not find free Breakpoint Register Pair");
1377 breakpoint_hw_set(breakpoint
, brp_i
);
1378 control
= ((matchmode
& 0x7) << 20)
1380 | (byte_addr_select
<< 5)
1382 brp_list
[brp_i
].used
= 1;
1383 brp_list
[brp_i
].value
= (breakpoint
->asid
);
1384 brp_list
[brp_i
].control
= control
;
1385 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1386 + CPUV8_DBG_BVR_BASE
+ 16 * brp_list
[brp_i
].brpn
,
1387 brp_list
[brp_i
].value
);
1388 if (retval
!= ERROR_OK
)
1390 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1391 + CPUV8_DBG_BCR_BASE
+ 16 * brp_list
[brp_i
].brpn
,
1392 brp_list
[brp_i
].control
);
1393 if (retval
!= ERROR_OK
)
1395 LOG_DEBUG("brp %i control 0x%0" PRIx32
" value 0x%" TARGET_PRIxADDR
, brp_i
,
1396 brp_list
[brp_i
].control
,
1397 brp_list
[brp_i
].value
);
1402 static int aarch64_set_hybrid_breakpoint(struct target
*target
, struct breakpoint
*breakpoint
)
1404 int retval
= ERROR_FAIL
;
1405 int brp_1
= 0; /* holds the contextID pair */
1406 int brp_2
= 0; /* holds the IVA pair */
1407 uint32_t control_ctx
, control_iva
;
1408 uint8_t ctx_byte_addr_select
= 0x0F;
1409 uint8_t iva_byte_addr_select
= 0x0F;
1410 uint8_t ctx_machmode
= 0x03;
1411 uint8_t iva_machmode
= 0x01;
1412 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1413 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
1414 struct aarch64_brp
*brp_list
= aarch64
->brp_list
;
1416 if (breakpoint
->is_set
) {
1417 LOG_WARNING("breakpoint already set");
1420 /*check available context BRPs*/
1421 while ((brp_list
[brp_1
].used
||
1422 (brp_list
[brp_1
].type
!= BRP_CONTEXT
)) && (brp_1
< aarch64
->brp_num
))
1425 LOG_DEBUG("brp(CTX) found num: %d", brp_1
);
1426 if (brp_1
>= aarch64
->brp_num
) {
1427 LOG_ERROR("ERROR Can not find free Breakpoint Register Pair");
1431 while ((brp_list
[brp_2
].used
||
1432 (brp_list
[brp_2
].type
!= BRP_NORMAL
)) && (brp_2
< aarch64
->brp_num
))
1435 LOG_DEBUG("brp(IVA) found num: %d", brp_2
);
1436 if (brp_2
>= aarch64
->brp_num
) {
1437 LOG_ERROR("ERROR Can not find free Breakpoint Register Pair");
1441 breakpoint_hw_set(breakpoint
, brp_1
);
1442 breakpoint
->linked_brp
= brp_2
;
1443 control_ctx
= ((ctx_machmode
& 0x7) << 20)
1446 | (ctx_byte_addr_select
<< 5)
1448 brp_list
[brp_1
].used
= 1;
1449 brp_list
[brp_1
].value
= (breakpoint
->asid
);
1450 brp_list
[brp_1
].control
= control_ctx
;
1451 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1452 + CPUV8_DBG_BVR_BASE
+ 16 * brp_list
[brp_1
].brpn
,
1453 brp_list
[brp_1
].value
);
1454 if (retval
!= ERROR_OK
)
1456 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1457 + CPUV8_DBG_BCR_BASE
+ 16 * brp_list
[brp_1
].brpn
,
1458 brp_list
[brp_1
].control
);
1459 if (retval
!= ERROR_OK
)
1462 control_iva
= ((iva_machmode
& 0x7) << 20)
1465 | (iva_byte_addr_select
<< 5)
1467 brp_list
[brp_2
].used
= 1;
1468 brp_list
[brp_2
].value
= breakpoint
->address
& 0xFFFFFFFFFFFFFFFCULL
;
1469 brp_list
[brp_2
].control
= control_iva
;
1470 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1471 + CPUV8_DBG_BVR_BASE
+ 16 * brp_list
[brp_2
].brpn
,
1472 brp_list
[brp_2
].value
& 0xFFFFFFFF);
1473 if (retval
!= ERROR_OK
)
1475 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1476 + CPUV8_DBG_BVR_BASE
+ 4 + 16 * brp_list
[brp_2
].brpn
,
1477 brp_list
[brp_2
].value
>> 32);
1478 if (retval
!= ERROR_OK
)
1480 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1481 + CPUV8_DBG_BCR_BASE
+ 16 * brp_list
[brp_2
].brpn
,
1482 brp_list
[brp_2
].control
);
1483 if (retval
!= ERROR_OK
)
1489 static int aarch64_unset_breakpoint(struct target
*target
, struct breakpoint
*breakpoint
)
1492 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1493 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
1494 struct aarch64_brp
*brp_list
= aarch64
->brp_list
;
1496 if (!breakpoint
->is_set
) {
1497 LOG_WARNING("breakpoint not set");
1501 if (breakpoint
->type
== BKPT_HARD
) {
1502 if ((breakpoint
->address
!= 0) && (breakpoint
->asid
!= 0)) {
1503 int brp_i
= breakpoint
->number
;
1504 int brp_j
= breakpoint
->linked_brp
;
1505 if (brp_i
>= aarch64
->brp_num
) {
1506 LOG_DEBUG("Invalid BRP number in breakpoint");
1509 LOG_DEBUG("rbp %i control 0x%0" PRIx32
" value 0x%" TARGET_PRIxADDR
, brp_i
,
1510 brp_list
[brp_i
].control
, brp_list
[brp_i
].value
);
1511 brp_list
[brp_i
].used
= 0;
1512 brp_list
[brp_i
].value
= 0;
1513 brp_list
[brp_i
].control
= 0;
1514 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1515 + CPUV8_DBG_BCR_BASE
+ 16 * brp_list
[brp_i
].brpn
,
1516 brp_list
[brp_i
].control
);
1517 if (retval
!= ERROR_OK
)
1519 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1520 + CPUV8_DBG_BVR_BASE
+ 16 * brp_list
[brp_i
].brpn
,
1521 (uint32_t)brp_list
[brp_i
].value
);
1522 if (retval
!= ERROR_OK
)
1524 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1525 + CPUV8_DBG_BVR_BASE
+ 4 + 16 * brp_list
[brp_i
].brpn
,
1526 (uint32_t)brp_list
[brp_i
].value
);
1527 if (retval
!= ERROR_OK
)
1529 if ((brp_j
< 0) || (brp_j
>= aarch64
->brp_num
)) {
1530 LOG_DEBUG("Invalid BRP number in breakpoint");
1533 LOG_DEBUG("rbp %i control 0x%0" PRIx32
" value 0x%0" PRIx64
, brp_j
,
1534 brp_list
[brp_j
].control
, brp_list
[brp_j
].value
);
1535 brp_list
[brp_j
].used
= 0;
1536 brp_list
[brp_j
].value
= 0;
1537 brp_list
[brp_j
].control
= 0;
1538 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1539 + CPUV8_DBG_BCR_BASE
+ 16 * brp_list
[brp_j
].brpn
,
1540 brp_list
[brp_j
].control
);
1541 if (retval
!= ERROR_OK
)
1543 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1544 + CPUV8_DBG_BVR_BASE
+ 16 * brp_list
[brp_j
].brpn
,
1545 (uint32_t)brp_list
[brp_j
].value
);
1546 if (retval
!= ERROR_OK
)
1548 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1549 + CPUV8_DBG_BVR_BASE
+ 4 + 16 * brp_list
[brp_j
].brpn
,
1550 (uint32_t)brp_list
[brp_j
].value
);
1551 if (retval
!= ERROR_OK
)
1554 breakpoint
->linked_brp
= 0;
1555 breakpoint
->is_set
= false;
1559 int brp_i
= breakpoint
->number
;
1560 if (brp_i
>= aarch64
->brp_num
) {
1561 LOG_DEBUG("Invalid BRP number in breakpoint");
1564 LOG_DEBUG("rbp %i control 0x%0" PRIx32
" value 0x%0" PRIx64
, brp_i
,
1565 brp_list
[brp_i
].control
, brp_list
[brp_i
].value
);
1566 brp_list
[brp_i
].used
= 0;
1567 brp_list
[brp_i
].value
= 0;
1568 brp_list
[brp_i
].control
= 0;
1569 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1570 + CPUV8_DBG_BCR_BASE
+ 16 * brp_list
[brp_i
].brpn
,
1571 brp_list
[brp_i
].control
);
1572 if (retval
!= ERROR_OK
)
1574 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1575 + CPUV8_DBG_BVR_BASE
+ 16 * brp_list
[brp_i
].brpn
,
1576 brp_list
[brp_i
].value
);
1577 if (retval
!= ERROR_OK
)
1580 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1581 + CPUV8_DBG_BVR_BASE
+ 4 + 16 * brp_list
[brp_i
].brpn
,
1582 (uint32_t)brp_list
[brp_i
].value
);
1583 if (retval
!= ERROR_OK
)
1585 breakpoint
->is_set
= false;
1589 /* restore original instruction (kept in target endianness) */
1591 armv8_cache_d_inner_flush_virt(armv8
,
1592 breakpoint
->address
& 0xFFFFFFFFFFFFFFFEULL
,
1593 breakpoint
->length
);
1595 if (breakpoint
->length
== 4) {
1596 retval
= target_write_memory(target
,
1597 breakpoint
->address
& 0xFFFFFFFFFFFFFFFEULL
,
1598 4, 1, breakpoint
->orig_instr
);
1599 if (retval
!= ERROR_OK
)
1602 retval
= target_write_memory(target
,
1603 breakpoint
->address
& 0xFFFFFFFFFFFFFFFEULL
,
1604 2, 1, breakpoint
->orig_instr
);
1605 if (retval
!= ERROR_OK
)
1609 armv8_cache_d_inner_flush_virt(armv8
,
1610 breakpoint
->address
& 0xFFFFFFFFFFFFFFFEULL
,
1611 breakpoint
->length
);
1613 armv8_cache_i_inner_inval_virt(armv8
,
1614 breakpoint
->address
& 0xFFFFFFFFFFFFFFFEULL
,
1615 breakpoint
->length
);
1617 breakpoint
->is_set
= false;
1622 static int aarch64_add_breakpoint(struct target
*target
,
1623 struct breakpoint
*breakpoint
)
1625 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1627 if ((breakpoint
->type
== BKPT_HARD
) && (aarch64
->brp_num_available
< 1)) {
1628 LOG_INFO("no hardware breakpoint available");
1629 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1632 if (breakpoint
->type
== BKPT_HARD
)
1633 aarch64
->brp_num_available
--;
1635 return aarch64_set_breakpoint(target
, breakpoint
, 0x00); /* Exact match */
1638 static int aarch64_add_context_breakpoint(struct target
*target
,
1639 struct breakpoint
*breakpoint
)
1641 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1643 if ((breakpoint
->type
== BKPT_HARD
) && (aarch64
->brp_num_available
< 1)) {
1644 LOG_INFO("no hardware breakpoint available");
1645 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1648 if (breakpoint
->type
== BKPT_HARD
)
1649 aarch64
->brp_num_available
--;
1651 return aarch64_set_context_breakpoint(target
, breakpoint
, 0x02); /* asid match */
1654 static int aarch64_add_hybrid_breakpoint(struct target
*target
,
1655 struct breakpoint
*breakpoint
)
1657 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1659 if ((breakpoint
->type
== BKPT_HARD
) && (aarch64
->brp_num_available
< 1)) {
1660 LOG_INFO("no hardware breakpoint available");
1661 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1664 if (breakpoint
->type
== BKPT_HARD
)
1665 aarch64
->brp_num_available
--;
1667 return aarch64_set_hybrid_breakpoint(target
, breakpoint
); /* ??? */
1670 static int aarch64_remove_breakpoint(struct target
*target
, struct breakpoint
*breakpoint
)
1672 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1675 /* It is perfectly possible to remove breakpoints while the target is running */
1676 if (target
->state
!= TARGET_HALTED
) {
1677 LOG_WARNING("target not halted");
1678 return ERROR_TARGET_NOT_HALTED
;
1682 if (breakpoint
->is_set
) {
1683 aarch64_unset_breakpoint(target
, breakpoint
);
1684 if (breakpoint
->type
== BKPT_HARD
)
1685 aarch64
->brp_num_available
++;
1691 /* Setup hardware Watchpoint Register Pair */
1692 static int aarch64_set_watchpoint(struct target
*target
,
1693 struct watchpoint
*watchpoint
)
1697 uint32_t control
, offset
, length
;
1698 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1699 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
1700 struct aarch64_brp
*wp_list
= aarch64
->wp_list
;
1702 if (watchpoint
->is_set
) {
1703 LOG_WARNING("watchpoint already set");
1707 while (wp_list
[wp_i
].used
&& (wp_i
< aarch64
->wp_num
))
1709 if (wp_i
>= aarch64
->wp_num
) {
1710 LOG_ERROR("ERROR Can not find free Watchpoint Register Pair");
1711 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1714 control
= (1 << 0) /* enable */
1715 | (3 << 1) /* both user and privileged access */
1716 | (1 << 13); /* higher mode control */
1718 switch (watchpoint
->rw
) {
1730 /* Match up to 8 bytes. */
1731 offset
= watchpoint
->address
& 7;
1732 length
= watchpoint
->length
;
1733 if (offset
+ length
> sizeof(uint64_t)) {
1734 length
= sizeof(uint64_t) - offset
;
1735 LOG_WARNING("Adjust watchpoint match inside 8-byte boundary");
1737 for (; length
> 0; offset
++, length
--)
1738 control
|= (1 << offset
) << 5;
1740 wp_list
[wp_i
].value
= watchpoint
->address
& 0xFFFFFFFFFFFFFFF8ULL
;
1741 wp_list
[wp_i
].control
= control
;
1743 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1744 + CPUV8_DBG_WVR_BASE
+ 16 * wp_list
[wp_i
].brpn
,
1745 (uint32_t)(wp_list
[wp_i
].value
& 0xFFFFFFFF));
1746 if (retval
!= ERROR_OK
)
1748 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1749 + CPUV8_DBG_WVR_BASE
+ 4 + 16 * wp_list
[wp_i
].brpn
,
1750 (uint32_t)(wp_list
[wp_i
].value
>> 32));
1751 if (retval
!= ERROR_OK
)
1754 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1755 + CPUV8_DBG_WCR_BASE
+ 16 * wp_list
[wp_i
].brpn
,
1757 if (retval
!= ERROR_OK
)
1759 LOG_DEBUG("wp %i control 0x%0" PRIx32
" value 0x%" TARGET_PRIxADDR
, wp_i
,
1760 wp_list
[wp_i
].control
, wp_list
[wp_i
].value
);
1762 /* Ensure that halting debug mode is enable */
1763 retval
= aarch64_set_dscr_bits(target
, DSCR_HDE
, DSCR_HDE
);
1764 if (retval
!= ERROR_OK
) {
1765 LOG_DEBUG("Failed to set DSCR.HDE");
1769 wp_list
[wp_i
].used
= 1;
1770 watchpoint_set(watchpoint
, wp_i
);
1775 /* Clear hardware Watchpoint Register Pair */
1776 static int aarch64_unset_watchpoint(struct target
*target
,
1777 struct watchpoint
*watchpoint
)
1780 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1781 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
1782 struct aarch64_brp
*wp_list
= aarch64
->wp_list
;
1784 if (!watchpoint
->is_set
) {
1785 LOG_WARNING("watchpoint not set");
1789 int wp_i
= watchpoint
->number
;
1790 if (wp_i
>= aarch64
->wp_num
) {
1791 LOG_DEBUG("Invalid WP number in watchpoint");
1794 LOG_DEBUG("rwp %i control 0x%0" PRIx32
" value 0x%0" PRIx64
, wp_i
,
1795 wp_list
[wp_i
].control
, wp_list
[wp_i
].value
);
1796 wp_list
[wp_i
].used
= 0;
1797 wp_list
[wp_i
].value
= 0;
1798 wp_list
[wp_i
].control
= 0;
1799 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1800 + CPUV8_DBG_WCR_BASE
+ 16 * wp_list
[wp_i
].brpn
,
1801 wp_list
[wp_i
].control
);
1802 if (retval
!= ERROR_OK
)
1804 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1805 + CPUV8_DBG_WVR_BASE
+ 16 * wp_list
[wp_i
].brpn
,
1806 wp_list
[wp_i
].value
);
1807 if (retval
!= ERROR_OK
)
1810 retval
= aarch64_dap_write_memap_register_u32(target
, armv8
->debug_base
1811 + CPUV8_DBG_WVR_BASE
+ 4 + 16 * wp_list
[wp_i
].brpn
,
1812 (uint32_t)wp_list
[wp_i
].value
);
1813 if (retval
!= ERROR_OK
)
1815 watchpoint
->is_set
= false;
1820 static int aarch64_add_watchpoint(struct target
*target
,
1821 struct watchpoint
*watchpoint
)
1824 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1826 if (aarch64
->wp_num_available
< 1) {
1827 LOG_INFO("no hardware watchpoint available");
1828 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1831 retval
= aarch64_set_watchpoint(target
, watchpoint
);
1832 if (retval
== ERROR_OK
)
1833 aarch64
->wp_num_available
--;
1838 static int aarch64_remove_watchpoint(struct target
*target
,
1839 struct watchpoint
*watchpoint
)
1841 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
1843 if (watchpoint
->is_set
) {
1844 aarch64_unset_watchpoint(target
, watchpoint
);
1845 aarch64
->wp_num_available
++;
1852 * find out which watchpoint hits
1853 * get exception address and compare the address to watchpoints
1855 static int aarch64_hit_watchpoint(struct target
*target
,
1856 struct watchpoint
**hit_watchpoint
)
1858 if (target
->debug_reason
!= DBG_REASON_WATCHPOINT
)
1861 struct armv8_common
*armv8
= target_to_armv8(target
);
1863 target_addr_t exception_address
;
1864 struct watchpoint
*wp
;
1866 exception_address
= armv8
->dpm
.wp_addr
;
1868 if (exception_address
== 0xFFFFFFFF)
1871 for (wp
= target
->watchpoints
; wp
; wp
= wp
->next
)
1872 if (exception_address
>= wp
->address
&& exception_address
< (wp
->address
+ wp
->length
)) {
1873 *hit_watchpoint
= wp
;
1881 * Cortex-A8 Reset functions
1884 static int aarch64_enable_reset_catch(struct target
*target
, bool enable
)
1886 struct armv8_common
*armv8
= target_to_armv8(target
);
1890 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
1891 armv8
->debug_base
+ CPUV8_DBG_EDECR
, &edecr
);
1892 LOG_DEBUG("EDECR = 0x%08" PRIx32
", enable=%d", edecr
, enable
);
1893 if (retval
!= ERROR_OK
)
1901 return mem_ap_write_atomic_u32(armv8
->debug_ap
,
1902 armv8
->debug_base
+ CPUV8_DBG_EDECR
, edecr
);
1905 static int aarch64_clear_reset_catch(struct target
*target
)
1907 struct armv8_common
*armv8
= target_to_armv8(target
);
1912 /* check if Reset Catch debug event triggered as expected */
1913 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
1914 armv8
->debug_base
+ CPUV8_DBG_EDESR
, &edesr
);
1915 if (retval
!= ERROR_OK
)
1918 was_triggered
= !!(edesr
& ESR_RC
);
1919 LOG_DEBUG("Reset Catch debug event %s",
1920 was_triggered
? "triggered" : "NOT triggered!");
1922 if (was_triggered
) {
1923 /* clear pending Reset Catch debug event */
1925 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
1926 armv8
->debug_base
+ CPUV8_DBG_EDESR
, edesr
);
1927 if (retval
!= ERROR_OK
)
1934 static int aarch64_assert_reset(struct target
*target
)
1936 struct armv8_common
*armv8
= target_to_armv8(target
);
1937 enum reset_types reset_config
= jtag_get_reset_config();
1942 /* Issue some kind of warm reset. */
1943 if (target_has_event_action(target
, TARGET_EVENT_RESET_ASSERT
))
1944 target_handle_event(target
, TARGET_EVENT_RESET_ASSERT
);
1945 else if (reset_config
& RESET_HAS_SRST
) {
1946 bool srst_asserted
= false;
1948 if (target
->reset_halt
&& !(reset_config
& RESET_SRST_PULLS_TRST
)) {
1949 if (target_was_examined(target
)) {
1951 if (reset_config
& RESET_SRST_NO_GATING
) {
1953 * SRST needs to be asserted *before* Reset Catch
1954 * debug event can be set up.
1956 adapter_assert_reset();
1957 srst_asserted
= true;
1960 /* make sure to clear all sticky errors */
1961 mem_ap_write_atomic_u32(armv8
->debug_ap
,
1962 armv8
->debug_base
+ CPUV8_DBG_DRCR
, DRCR_CSE
);
1964 /* set up Reset Catch debug event to halt the CPU after reset */
1965 retval
= aarch64_enable_reset_catch(target
, true);
1966 if (retval
!= ERROR_OK
)
1967 LOG_WARNING("%s: Error enabling Reset Catch debug event; the CPU will not halt immediately after reset!",
1968 target_name(target
));
1970 LOG_WARNING("%s: Target not examined, will not halt immediately after reset!",
1971 target_name(target
));
1975 /* REVISIT handle "pulls" cases, if there's
1976 * hardware that needs them to work.
1979 adapter_assert_reset();
1981 LOG_ERROR("%s: how to reset?", target_name(target
));
1985 /* registers are now invalid */
1986 if (armv8
->arm
.core_cache
) {
1987 register_cache_invalidate(armv8
->arm
.core_cache
);
1988 register_cache_invalidate(armv8
->arm
.core_cache
->next
);
1991 target
->state
= TARGET_RESET
;
1996 static int aarch64_deassert_reset(struct target
*target
)
2002 /* be certain SRST is off */
2003 adapter_deassert_reset();
2005 if (!target_was_examined(target
))
2008 retval
= aarch64_init_debug_access(target
);
2009 if (retval
!= ERROR_OK
)
2012 retval
= aarch64_poll(target
);
2013 if (retval
!= ERROR_OK
)
2016 if (target
->reset_halt
) {
2017 /* clear pending Reset Catch debug event */
2018 retval
= aarch64_clear_reset_catch(target
);
2019 if (retval
!= ERROR_OK
)
2020 LOG_WARNING("%s: Clearing Reset Catch debug event failed",
2021 target_name(target
));
2023 /* disable Reset Catch debug event */
2024 retval
= aarch64_enable_reset_catch(target
, false);
2025 if (retval
!= ERROR_OK
)
2026 LOG_WARNING("%s: Disabling Reset Catch debug event failed",
2027 target_name(target
));
2029 if (target
->state
!= TARGET_HALTED
) {
2030 LOG_WARNING("%s: ran after reset and before halt ...",
2031 target_name(target
));
2032 if (target_was_examined(target
)) {
2033 retval
= aarch64_halt_one(target
, HALT_LAZY
);
2034 if (retval
!= ERROR_OK
)
2037 target
->state
= TARGET_UNKNOWN
;
2045 static int aarch64_write_cpu_memory_slow(struct target
*target
,
2046 uint32_t size
, uint32_t count
, const uint8_t *buffer
, uint32_t *dscr
)
2048 struct armv8_common
*armv8
= target_to_armv8(target
);
2049 struct arm_dpm
*dpm
= &armv8
->dpm
;
2050 struct arm
*arm
= &armv8
->arm
;
2053 if (size
> 4 && arm
->core_state
!= ARM_STATE_AARCH64
) {
2054 LOG_ERROR("memory write sizes greater than 4 bytes is only supported for AArch64 state");
2058 armv8_reg_current(arm
, 1)->dirty
= true;
2060 /* change DCC to normal mode if necessary */
2061 if (*dscr
& DSCR_MA
) {
2063 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2064 armv8
->debug_base
+ CPUV8_DBG_DSCR
, *dscr
);
2065 if (retval
!= ERROR_OK
)
2073 /* write the data to store into DTRRX (and DTRTX for 64-bit) */
2077 data
= target_buffer_get_u16(target
, buffer
);
2079 data
= target_buffer_get_u32(target
, buffer
);
2081 data
= target_buffer_get_u64(target
, buffer
);
2083 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2084 armv8
->debug_base
+ CPUV8_DBG_DTRRX
, (uint32_t)data
);
2085 if (retval
== ERROR_OK
&& size
> 4)
2086 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2087 armv8
->debug_base
+ CPUV8_DBG_DTRTX
, (uint32_t)(data
>> 32));
2088 if (retval
!= ERROR_OK
)
2091 if (arm
->core_state
== ARM_STATE_AARCH64
)
2093 retval
= dpm
->instr_execute(dpm
, ARMV8_MRS(SYSTEM_DBG_DTRRX_EL0
, 1));
2095 retval
= dpm
->instr_execute(dpm
, ARMV8_MRS(SYSTEM_DBG_DBGDTR_EL0
, 1));
2097 retval
= dpm
->instr_execute(dpm
, ARMV4_5_MRC(14, 0, 1, 0, 5, 0));
2098 if (retval
!= ERROR_OK
)
2102 opcode
= armv8_opcode(armv8
, ARMV8_OPC_STRB_IP
);
2104 opcode
= armv8_opcode(armv8
, ARMV8_OPC_STRH_IP
);
2106 opcode
= armv8_opcode(armv8
, ARMV8_OPC_STRW_IP
);
2108 opcode
= armv8_opcode(armv8
, ARMV8_OPC_STRD_IP
);
2110 retval
= dpm
->instr_execute(dpm
, opcode
);
2111 if (retval
!= ERROR_OK
)
2122 static int aarch64_write_cpu_memory_fast(struct target
*target
,
2123 uint32_t count
, const uint8_t *buffer
, uint32_t *dscr
)
2125 struct armv8_common
*armv8
= target_to_armv8(target
);
2126 struct arm
*arm
= &armv8
->arm
;
2129 armv8_reg_current(arm
, 1)->dirty
= true;
2131 /* Step 1.d - Change DCC to memory mode */
2133 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2134 armv8
->debug_base
+ CPUV8_DBG_DSCR
, *dscr
);
2135 if (retval
!= ERROR_OK
)
2139 /* Step 2.a - Do the write */
2140 retval
= mem_ap_write_buf_noincr(armv8
->debug_ap
,
2141 buffer
, 4, count
, armv8
->debug_base
+ CPUV8_DBG_DTRRX
);
2142 if (retval
!= ERROR_OK
)
2145 /* Step 3.a - Switch DTR mode back to Normal mode */
2147 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2148 armv8
->debug_base
+ CPUV8_DBG_DSCR
, *dscr
);
2149 if (retval
!= ERROR_OK
)
2155 static int aarch64_write_cpu_memory(struct target
*target
,
2156 uint64_t address
, uint32_t size
,
2157 uint32_t count
, const uint8_t *buffer
)
2159 /* write memory through APB-AP */
2160 int retval
= ERROR_COMMAND_SYNTAX_ERROR
;
2161 struct armv8_common
*armv8
= target_to_armv8(target
);
2162 struct arm_dpm
*dpm
= &armv8
->dpm
;
2163 struct arm
*arm
= &armv8
->arm
;
2166 if (target
->state
!= TARGET_HALTED
) {
2167 LOG_TARGET_ERROR(target
, "not halted");
2168 return ERROR_TARGET_NOT_HALTED
;
2171 /* Mark register X0 as dirty, as it will be used
2172 * for transferring the data.
2173 * It will be restored automatically when exiting
2176 armv8_reg_current(arm
, 0)->dirty
= true;
2178 /* This algorithm comes from DDI0487A.g, chapter J9.1 */
2181 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2182 armv8
->debug_base
+ CPUV8_DBG_DSCR
, &dscr
);
2183 if (retval
!= ERROR_OK
)
2186 /* Set Normal access mode */
2187 dscr
= (dscr
& ~DSCR_MA
);
2188 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2189 armv8
->debug_base
+ CPUV8_DBG_DSCR
, dscr
);
2190 if (retval
!= ERROR_OK
)
2193 if (arm
->core_state
== ARM_STATE_AARCH64
) {
2194 /* Write X0 with value 'address' using write procedure */
2195 /* Step 1.a+b - Write the address for read access into DBGDTR_EL0 */
2196 /* Step 1.c - Copy value from DTR to R0 using instruction mrs DBGDTR_EL0, x0 */
2197 retval
= dpm
->instr_write_data_dcc_64(dpm
,
2198 ARMV8_MRS(SYSTEM_DBG_DBGDTR_EL0
, 0), address
);
2200 /* Write R0 with value 'address' using write procedure */
2201 /* Step 1.a+b - Write the address for read access into DBGDTRRX */
2202 /* Step 1.c - Copy value from DTR to R0 using instruction mrc DBGDTRTXint, r0 */
2203 retval
= dpm
->instr_write_data_dcc(dpm
,
2204 ARMV4_5_MRC(14, 0, 0, 0, 5, 0), address
);
2207 if (retval
!= ERROR_OK
)
2210 if (size
== 4 && (address
% 4) == 0)
2211 retval
= aarch64_write_cpu_memory_fast(target
, count
, buffer
, &dscr
);
2213 retval
= aarch64_write_cpu_memory_slow(target
, size
, count
, buffer
, &dscr
);
2215 if (retval
!= ERROR_OK
) {
2216 /* Unset DTR mode */
2217 mem_ap_read_atomic_u32(armv8
->debug_ap
,
2218 armv8
->debug_base
+ CPUV8_DBG_DSCR
, &dscr
);
2220 mem_ap_write_atomic_u32(armv8
->debug_ap
,
2221 armv8
->debug_base
+ CPUV8_DBG_DSCR
, dscr
);
2224 /* Check for sticky abort flags in the DSCR */
2225 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2226 armv8
->debug_base
+ CPUV8_DBG_DSCR
, &dscr
);
2227 if (retval
!= ERROR_OK
)
2231 if (dscr
& (DSCR_ERR
| DSCR_SYS_ERROR_PEND
)) {
2232 /* Abort occurred - clear it and exit */
2233 LOG_ERROR("abort occurred - dscr = 0x%08" PRIx32
, dscr
);
2234 armv8_dpm_handle_exception(dpm
, true);
2242 static int aarch64_read_cpu_memory_slow(struct target
*target
,
2243 uint32_t size
, uint32_t count
, uint8_t *buffer
, uint32_t *dscr
)
2245 struct armv8_common
*armv8
= target_to_armv8(target
);
2246 struct arm_dpm
*dpm
= &armv8
->dpm
;
2247 struct arm
*arm
= &armv8
->arm
;
2250 if (size
> 4 && arm
->core_state
!= ARM_STATE_AARCH64
) {
2251 LOG_ERROR("memory read sizes greater than 4 bytes is only supported for AArch64 state");
2255 armv8_reg_current(arm
, 1)->dirty
= true;
2257 /* change DCC to normal mode (if necessary) */
2258 if (*dscr
& DSCR_MA
) {
2260 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2261 armv8
->debug_base
+ CPUV8_DBG_DSCR
, *dscr
);
2262 if (retval
!= ERROR_OK
)
2273 opcode
= armv8_opcode(armv8
, ARMV8_OPC_LDRB_IP
);
2275 opcode
= armv8_opcode(armv8
, ARMV8_OPC_LDRH_IP
);
2277 opcode
= armv8_opcode(armv8
, ARMV8_OPC_LDRW_IP
);
2279 opcode
= armv8_opcode(armv8
, ARMV8_OPC_LDRD_IP
);
2281 retval
= dpm
->instr_execute(dpm
, opcode
);
2282 if (retval
!= ERROR_OK
)
2285 if (arm
->core_state
== ARM_STATE_AARCH64
)
2287 retval
= dpm
->instr_execute(dpm
, ARMV8_MSR_GP(SYSTEM_DBG_DTRTX_EL0
, 1));
2289 retval
= dpm
->instr_execute(dpm
, ARMV8_MSR_GP(SYSTEM_DBG_DBGDTR_EL0
, 1));
2291 retval
= dpm
->instr_execute(dpm
, ARMV4_5_MCR(14, 0, 1, 0, 5, 0));
2292 if (retval
!= ERROR_OK
)
2295 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2296 armv8
->debug_base
+ CPUV8_DBG_DTRTX
, &lower
);
2297 if (retval
== ERROR_OK
) {
2299 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2300 armv8
->debug_base
+ CPUV8_DBG_DTRRX
, &higher
);
2304 if (retval
!= ERROR_OK
)
2307 data
= (uint64_t)lower
| (uint64_t)higher
<< 32;
2310 *buffer
= (uint8_t)data
;
2312 target_buffer_set_u16(target
, buffer
, (uint16_t)data
);
2314 target_buffer_set_u32(target
, buffer
, (uint32_t)data
);
2316 target_buffer_set_u64(target
, buffer
, data
);
2326 static int aarch64_read_cpu_memory_fast(struct target
*target
,
2327 uint32_t count
, uint8_t *buffer
, uint32_t *dscr
)
2329 struct armv8_common
*armv8
= target_to_armv8(target
);
2330 struct arm_dpm
*dpm
= &armv8
->dpm
;
2331 struct arm
*arm
= &armv8
->arm
;
2335 /* Mark X1 as dirty */
2336 armv8_reg_current(arm
, 1)->dirty
= true;
2338 if (arm
->core_state
== ARM_STATE_AARCH64
) {
2339 /* Step 1.d - Dummy operation to ensure EDSCR.Txfull == 1 */
2340 retval
= dpm
->instr_execute(dpm
, ARMV8_MSR_GP(SYSTEM_DBG_DBGDTR_EL0
, 0));
2342 /* Step 1.d - Dummy operation to ensure EDSCR.Txfull == 1 */
2343 retval
= dpm
->instr_execute(dpm
, ARMV4_5_MCR(14, 0, 0, 0, 5, 0));
2346 if (retval
!= ERROR_OK
)
2349 /* Step 1.e - Change DCC to memory mode */
2351 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2352 armv8
->debug_base
+ CPUV8_DBG_DSCR
, *dscr
);
2353 if (retval
!= ERROR_OK
)
2356 /* Step 1.f - read DBGDTRTX and discard the value */
2357 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2358 armv8
->debug_base
+ CPUV8_DBG_DTRTX
, &value
);
2359 if (retval
!= ERROR_OK
)
2363 /* Read the data - Each read of the DTRTX register causes the instruction to be reissued
2364 * Abort flags are sticky, so can be read at end of transactions
2366 * This data is read in aligned to 32 bit boundary.
2370 /* Step 2.a - Loop n-1 times, each read of DBGDTRTX reads the data from [X0] and
2371 * increments X0 by 4. */
2372 retval
= mem_ap_read_buf_noincr(armv8
->debug_ap
, buffer
, 4, count
,
2373 armv8
->debug_base
+ CPUV8_DBG_DTRTX
);
2374 if (retval
!= ERROR_OK
)
2378 /* Step 3.a - set DTR access mode back to Normal mode */
2380 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2381 armv8
->debug_base
+ CPUV8_DBG_DSCR
, *dscr
);
2382 if (retval
!= ERROR_OK
)
2385 /* Step 3.b - read DBGDTRTX for the final value */
2386 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2387 armv8
->debug_base
+ CPUV8_DBG_DTRTX
, &value
);
2388 if (retval
!= ERROR_OK
)
2391 target_buffer_set_u32(target
, buffer
+ count
* 4, value
);
2395 static int aarch64_read_cpu_memory(struct target
*target
,
2396 target_addr_t address
, uint32_t size
,
2397 uint32_t count
, uint8_t *buffer
)
2399 /* read memory through APB-AP */
2400 int retval
= ERROR_COMMAND_SYNTAX_ERROR
;
2401 struct armv8_common
*armv8
= target_to_armv8(target
);
2402 struct arm_dpm
*dpm
= &armv8
->dpm
;
2403 struct arm
*arm
= &armv8
->arm
;
2406 LOG_DEBUG("Reading CPU memory address 0x%016" PRIx64
" size %" PRIu32
" count %" PRIu32
,
2407 address
, size
, count
);
2409 if (target
->state
!= TARGET_HALTED
) {
2410 LOG_TARGET_ERROR(target
, "not halted");
2411 return ERROR_TARGET_NOT_HALTED
;
2414 /* Mark register X0 as dirty, as it will be used
2415 * for transferring the data.
2416 * It will be restored automatically when exiting
2419 armv8_reg_current(arm
, 0)->dirty
= true;
2422 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2423 armv8
->debug_base
+ CPUV8_DBG_DSCR
, &dscr
);
2424 if (retval
!= ERROR_OK
)
2427 /* This algorithm comes from DDI0487A.g, chapter J9.1 */
2429 /* Set Normal access mode */
2431 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2432 armv8
->debug_base
+ CPUV8_DBG_DSCR
, dscr
);
2433 if (retval
!= ERROR_OK
)
2436 if (arm
->core_state
== ARM_STATE_AARCH64
) {
2437 /* Write X0 with value 'address' using write procedure */
2438 /* Step 1.a+b - Write the address for read access into DBGDTR_EL0 */
2439 /* Step 1.c - Copy value from DTR to R0 using instruction mrs DBGDTR_EL0, x0 */
2440 retval
= dpm
->instr_write_data_dcc_64(dpm
,
2441 ARMV8_MRS(SYSTEM_DBG_DBGDTR_EL0
, 0), address
);
2443 /* Write R0 with value 'address' using write procedure */
2444 /* Step 1.a+b - Write the address for read access into DBGDTRRXint */
2445 /* Step 1.c - Copy value from DTR to R0 using instruction mrc DBGDTRTXint, r0 */
2446 retval
= dpm
->instr_write_data_dcc(dpm
,
2447 ARMV4_5_MRC(14, 0, 0, 0, 5, 0), address
);
2450 if (retval
!= ERROR_OK
)
2453 if (size
== 4 && (address
% 4) == 0)
2454 retval
= aarch64_read_cpu_memory_fast(target
, count
, buffer
, &dscr
);
2456 retval
= aarch64_read_cpu_memory_slow(target
, size
, count
, buffer
, &dscr
);
2458 if (dscr
& DSCR_MA
) {
2460 mem_ap_write_atomic_u32(armv8
->debug_ap
,
2461 armv8
->debug_base
+ CPUV8_DBG_DSCR
, dscr
);
2464 if (retval
!= ERROR_OK
)
2467 /* Check for sticky abort flags in the DSCR */
2468 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2469 armv8
->debug_base
+ CPUV8_DBG_DSCR
, &dscr
);
2470 if (retval
!= ERROR_OK
)
2475 if (dscr
& (DSCR_ERR
| DSCR_SYS_ERROR_PEND
)) {
2476 /* Abort occurred - clear it and exit */
2477 LOG_ERROR("abort occurred - dscr = 0x%08" PRIx32
, dscr
);
2478 armv8_dpm_handle_exception(dpm
, true);
2486 static int aarch64_read_phys_memory(struct target
*target
,
2487 target_addr_t address
, uint32_t size
,
2488 uint32_t count
, uint8_t *buffer
)
2490 int retval
= ERROR_COMMAND_SYNTAX_ERROR
;
2492 if (count
&& buffer
) {
2493 /* read memory through APB-AP */
2494 retval
= aarch64_mmu_modify(target
, 0);
2495 if (retval
!= ERROR_OK
)
2497 retval
= aarch64_read_cpu_memory(target
, address
, size
, count
, buffer
);
2502 static int aarch64_read_memory(struct target
*target
, target_addr_t address
,
2503 uint32_t size
, uint32_t count
, uint8_t *buffer
)
2505 int mmu_enabled
= 0;
2508 /* determine if MMU was enabled on target stop */
2509 retval
= aarch64_mmu(target
, &mmu_enabled
);
2510 if (retval
!= ERROR_OK
)
2514 /* enable MMU as we could have disabled it for phys access */
2515 retval
= aarch64_mmu_modify(target
, 1);
2516 if (retval
!= ERROR_OK
)
2519 return aarch64_read_cpu_memory(target
, address
, size
, count
, buffer
);
2522 static int aarch64_write_phys_memory(struct target
*target
,
2523 target_addr_t address
, uint32_t size
,
2524 uint32_t count
, const uint8_t *buffer
)
2526 int retval
= ERROR_COMMAND_SYNTAX_ERROR
;
2528 if (count
&& buffer
) {
2529 /* write memory through APB-AP */
2530 retval
= aarch64_mmu_modify(target
, 0);
2531 if (retval
!= ERROR_OK
)
2533 return aarch64_write_cpu_memory(target
, address
, size
, count
, buffer
);
2539 static int aarch64_write_memory(struct target
*target
, target_addr_t address
,
2540 uint32_t size
, uint32_t count
, const uint8_t *buffer
)
2542 int mmu_enabled
= 0;
2545 /* determine if MMU was enabled on target stop */
2546 retval
= aarch64_mmu(target
, &mmu_enabled
);
2547 if (retval
!= ERROR_OK
)
2551 /* enable MMU as we could have disabled it for phys access */
2552 retval
= aarch64_mmu_modify(target
, 1);
2553 if (retval
!= ERROR_OK
)
2556 return aarch64_write_cpu_memory(target
, address
, size
, count
, buffer
);
2559 static int aarch64_handle_target_request(void *priv
)
2561 struct target
*target
= priv
;
2562 struct armv8_common
*armv8
= target_to_armv8(target
);
2565 if (!target_was_examined(target
))
2567 if (!target
->dbg_msg_enabled
)
2570 if (target
->state
== TARGET_RUNNING
) {
2573 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2574 armv8
->debug_base
+ CPUV8_DBG_DSCR
, &dscr
);
2576 /* check if we have data */
2577 while ((dscr
& DSCR_DTR_TX_FULL
) && (retval
== ERROR_OK
)) {
2578 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2579 armv8
->debug_base
+ CPUV8_DBG_DTRTX
, &request
);
2580 if (retval
== ERROR_OK
) {
2581 target_request(target
, request
);
2582 retval
= mem_ap_read_atomic_u32(armv8
->debug_ap
,
2583 armv8
->debug_base
+ CPUV8_DBG_DSCR
, &dscr
);
2591 static int aarch64_examine_first(struct target
*target
)
2593 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
2594 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
2595 struct adiv5_dap
*swjdp
= armv8
->arm
.dap
;
2596 struct aarch64_private_config
*pc
= target
->private_config
;
2598 int retval
= ERROR_OK
;
2599 uint64_t debug
, ttypr
;
2601 uint32_t tmp0
, tmp1
, tmp2
, tmp3
;
2602 debug
= ttypr
= cpuid
= 0;
2607 if (!armv8
->debug_ap
) {
2608 if (pc
->adiv5_config
.ap_num
== DP_APSEL_INVALID
) {
2609 /* Search for the APB-AB */
2610 retval
= dap_find_get_ap(swjdp
, AP_TYPE_APB_AP
, &armv8
->debug_ap
);
2611 if (retval
!= ERROR_OK
) {
2612 LOG_ERROR("Could not find APB-AP for debug access");
2616 armv8
->debug_ap
= dap_get_ap(swjdp
, pc
->adiv5_config
.ap_num
);
2617 if (!armv8
->debug_ap
) {
2618 LOG_ERROR("Cannot get AP");
2624 retval
= mem_ap_init(armv8
->debug_ap
);
2625 if (retval
!= ERROR_OK
) {
2626 LOG_ERROR("Could not initialize the APB-AP");
2630 armv8
->debug_ap
->memaccess_tck
= 10;
2632 if (!target
->dbgbase_set
) {
2633 /* Lookup Processor DAP */
2634 retval
= dap_lookup_cs_component(armv8
->debug_ap
, ARM_CS_C9_DEVTYPE_CORE_DEBUG
,
2635 &armv8
->debug_base
, target
->coreid
);
2636 if (retval
!= ERROR_OK
)
2638 LOG_DEBUG("Detected core %" PRId32
" dbgbase: " TARGET_ADDR_FMT
,
2639 target
->coreid
, armv8
->debug_base
);
2641 armv8
->debug_base
= target
->dbgbase
;
2643 retval
= mem_ap_write_atomic_u32(armv8
->debug_ap
,
2644 armv8
->debug_base
+ CPUV8_DBG_OSLAR
, 0);
2645 if (retval
!= ERROR_OK
) {
2646 LOG_DEBUG("Examine %s failed", "oslock");
2650 retval
= mem_ap_read_u32(armv8
->debug_ap
,
2651 armv8
->debug_base
+ CPUV8_DBG_MAINID0
, &cpuid
);
2652 if (retval
!= ERROR_OK
) {
2653 LOG_DEBUG("Examine %s failed", "CPUID");
2657 retval
= mem_ap_read_u32(armv8
->debug_ap
,
2658 armv8
->debug_base
+ CPUV8_DBG_MEMFEATURE0
, &tmp0
);
2659 retval
+= mem_ap_read_u32(armv8
->debug_ap
,
2660 armv8
->debug_base
+ CPUV8_DBG_MEMFEATURE0
+ 4, &tmp1
);
2661 if (retval
!= ERROR_OK
) {
2662 LOG_DEBUG("Examine %s failed", "Memory Model Type");
2665 retval
= mem_ap_read_u32(armv8
->debug_ap
,
2666 armv8
->debug_base
+ CPUV8_DBG_DBGFEATURE0
, &tmp2
);
2667 retval
+= mem_ap_read_u32(armv8
->debug_ap
,
2668 armv8
->debug_base
+ CPUV8_DBG_DBGFEATURE0
+ 4, &tmp3
);
2669 if (retval
!= ERROR_OK
) {
2670 LOG_DEBUG("Examine %s failed", "ID_AA64DFR0_EL1");
2674 retval
= dap_run(armv8
->debug_ap
->dap
);
2675 if (retval
!= ERROR_OK
) {
2676 LOG_ERROR("%s: examination failed\n", target_name(target
));
2681 ttypr
= (ttypr
<< 32) | tmp0
;
2683 debug
= (debug
<< 32) | tmp2
;
2685 LOG_DEBUG("cpuid = 0x%08" PRIx32
, cpuid
);
2686 LOG_DEBUG("ttypr = 0x%08" PRIx64
, ttypr
);
2687 LOG_DEBUG("debug = 0x%08" PRIx64
, debug
);
2690 LOG_TARGET_ERROR(target
, "CTI not specified");
2694 armv8
->cti
= pc
->cti
;
2696 retval
= aarch64_dpm_setup(aarch64
, debug
);
2697 if (retval
!= ERROR_OK
)
2700 /* Setup Breakpoint Register Pairs */
2701 aarch64
->brp_num
= (uint32_t)((debug
>> 12) & 0x0F) + 1;
2702 aarch64
->brp_num_context
= (uint32_t)((debug
>> 28) & 0x0F) + 1;
2703 aarch64
->brp_num_available
= aarch64
->brp_num
;
2704 aarch64
->brp_list
= calloc(aarch64
->brp_num
, sizeof(struct aarch64_brp
));
2705 for (i
= 0; i
< aarch64
->brp_num
; i
++) {
2706 aarch64
->brp_list
[i
].used
= 0;
2707 if (i
< (aarch64
->brp_num
-aarch64
->brp_num_context
))
2708 aarch64
->brp_list
[i
].type
= BRP_NORMAL
;
2710 aarch64
->brp_list
[i
].type
= BRP_CONTEXT
;
2711 aarch64
->brp_list
[i
].value
= 0;
2712 aarch64
->brp_list
[i
].control
= 0;
2713 aarch64
->brp_list
[i
].brpn
= i
;
2716 /* Setup Watchpoint Register Pairs */
2717 aarch64
->wp_num
= (uint32_t)((debug
>> 20) & 0x0F) + 1;
2718 aarch64
->wp_num_available
= aarch64
->wp_num
;
2719 aarch64
->wp_list
= calloc(aarch64
->wp_num
, sizeof(struct aarch64_brp
));
2720 for (i
= 0; i
< aarch64
->wp_num
; i
++) {
2721 aarch64
->wp_list
[i
].used
= 0;
2722 aarch64
->wp_list
[i
].type
= BRP_NORMAL
;
2723 aarch64
->wp_list
[i
].value
= 0;
2724 aarch64
->wp_list
[i
].control
= 0;
2725 aarch64
->wp_list
[i
].brpn
= i
;
2728 LOG_DEBUG("Configured %i hw breakpoints, %i watchpoints",
2729 aarch64
->brp_num
, aarch64
->wp_num
);
2731 target
->state
= TARGET_UNKNOWN
;
2732 target
->debug_reason
= DBG_REASON_NOTHALTED
;
2733 aarch64
->isrmasking_mode
= AARCH64_ISRMASK_ON
;
2734 target_set_examined(target
);
2738 static int aarch64_examine(struct target
*target
)
2740 int retval
= ERROR_OK
;
2742 /* don't re-probe hardware after each reset */
2743 if (!target_was_examined(target
))
2744 retval
= aarch64_examine_first(target
);
2746 /* Configure core debug access */
2747 if (retval
== ERROR_OK
)
2748 retval
= aarch64_init_debug_access(target
);
2750 if (retval
== ERROR_OK
)
2751 retval
= aarch64_poll(target
);
2757 * Cortex-A8 target creation and initialization
2760 static int aarch64_init_target(struct command_context
*cmd_ctx
,
2761 struct target
*target
)
2763 /* examine_first() does a bunch of this */
2764 arm_semihosting_init(target
);
2768 static int aarch64_init_arch_info(struct target
*target
,
2769 struct aarch64_common
*aarch64
, struct adiv5_dap
*dap
)
2771 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
2773 /* Setup struct aarch64_common */
2774 aarch64
->common_magic
= AARCH64_COMMON_MAGIC
;
2775 armv8
->arm
.dap
= dap
;
2777 /* register arch-specific functions */
2778 armv8
->examine_debug_reason
= NULL
;
2779 armv8
->post_debug_entry
= aarch64_post_debug_entry
;
2780 armv8
->pre_restore_context
= NULL
;
2781 armv8
->armv8_mmu
.read_physical_memory
= aarch64_read_phys_memory
;
2783 armv8_init_arch_info(target
, armv8
);
2784 target_register_timer_callback(aarch64_handle_target_request
, 1,
2785 TARGET_TIMER_TYPE_PERIODIC
, target
);
2790 static int armv8r_target_create(struct target
*target
, Jim_Interp
*interp
)
2792 struct aarch64_private_config
*pc
= target
->private_config
;
2793 struct aarch64_common
*aarch64
;
2795 if (adiv5_verify_config(&pc
->adiv5_config
) != ERROR_OK
)
2798 aarch64
= calloc(1, sizeof(struct aarch64_common
));
2800 LOG_ERROR("Out of memory");
2804 aarch64
->armv8_common
.is_armv8r
= true;
2806 return aarch64_init_arch_info(target
, aarch64
, pc
->adiv5_config
.dap
);
2809 static int aarch64_target_create(struct target
*target
, Jim_Interp
*interp
)
2811 struct aarch64_private_config
*pc
= target
->private_config
;
2812 struct aarch64_common
*aarch64
;
2814 if (adiv5_verify_config(&pc
->adiv5_config
) != ERROR_OK
)
2817 aarch64
= calloc(1, sizeof(struct aarch64_common
));
2819 LOG_ERROR("Out of memory");
2823 aarch64
->armv8_common
.is_armv8r
= false;
2825 return aarch64_init_arch_info(target
, aarch64
, pc
->adiv5_config
.dap
);
2828 static void aarch64_deinit_target(struct target
*target
)
2830 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
2831 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
2832 struct arm_dpm
*dpm
= &armv8
->dpm
;
2834 if (armv8
->debug_ap
)
2835 dap_put_ap(armv8
->debug_ap
);
2837 armv8_free_reg_cache(target
);
2838 free(aarch64
->brp_list
);
2841 free(target
->private_config
);
2845 static int aarch64_mmu(struct target
*target
, int *enabled
)
2847 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
2848 struct armv8_common
*armv8
= &aarch64
->armv8_common
;
2849 if (target
->state
!= TARGET_HALTED
) {
2850 LOG_TARGET_ERROR(target
, "not halted");
2851 return ERROR_TARGET_NOT_HALTED
;
2853 if (armv8
->is_armv8r
)
2856 *enabled
= target_to_aarch64(target
)->armv8_common
.armv8_mmu
.mmu_enabled
;
2860 static int aarch64_virt2phys(struct target
*target
, target_addr_t virt
,
2861 target_addr_t
*phys
)
2863 return armv8_mmu_translate_va_pa(target
, virt
, phys
, 1);
2867 * private target configuration items
2869 enum aarch64_cfg_param
{
2873 static const struct jim_nvp nvp_config_opts
[] = {
2874 { .name
= "-cti", .value
= CFG_CTI
},
2875 { .name
= NULL
, .value
= -1 }
2878 static int aarch64_jim_configure(struct target
*target
, struct jim_getopt_info
*goi
)
2880 struct aarch64_private_config
*pc
;
2884 pc
= (struct aarch64_private_config
*)target
->private_config
;
2886 pc
= calloc(1, sizeof(struct aarch64_private_config
));
2887 pc
->adiv5_config
.ap_num
= DP_APSEL_INVALID
;
2888 target
->private_config
= pc
;
2892 * Call adiv5_jim_configure() to parse the common DAP options
2893 * It will return JIM_CONTINUE if it didn't find any known
2894 * options, JIM_OK if it correctly parsed the topmost option
2895 * and JIM_ERR if an error occurred during parameter evaluation.
2896 * For JIM_CONTINUE, we check our own params.
2898 e
= adiv5_jim_configure_ext(target
, goi
, &pc
->adiv5_config
, ADI_CONFIGURE_DAP_COMPULSORY
);
2899 if (e
!= JIM_CONTINUE
)
2902 /* parse config or cget options ... */
2903 if (goi
->argc
> 0) {
2904 Jim_SetEmptyResult(goi
->interp
);
2906 /* check first if topmost item is for us */
2907 e
= jim_nvp_name2value_obj(goi
->interp
, nvp_config_opts
,
2910 return JIM_CONTINUE
;
2912 e
= jim_getopt_obj(goi
, NULL
);
2918 if (goi
->isconfigure
) {
2920 struct arm_cti
*cti
;
2921 e
= jim_getopt_obj(goi
, &o_cti
);
2924 cti
= cti_instance_by_jim_obj(goi
->interp
, o_cti
);
2926 Jim_SetResultString(goi
->interp
, "CTI name invalid!", -1);
2931 if (goi
->argc
!= 0) {
2932 Jim_WrongNumArgs(goi
->interp
,
2933 goi
->argc
, goi
->argv
,
2938 if (!pc
|| !pc
->cti
) {
2939 Jim_SetResultString(goi
->interp
, "CTI not configured", -1);
2942 Jim_SetResultString(goi
->interp
, arm_cti_name(pc
->cti
), -1);
2948 return JIM_CONTINUE
;
2955 COMMAND_HANDLER(aarch64_handle_cache_info_command
)
2957 struct target
*target
= get_current_target(CMD_CTX
);
2958 struct armv8_common
*armv8
= target_to_armv8(target
);
2960 return armv8_handle_cache_info_command(CMD
,
2961 &armv8
->armv8_mmu
.armv8_cache
);
2964 COMMAND_HANDLER(aarch64_handle_dbginit_command
)
2966 struct target
*target
= get_current_target(CMD_CTX
);
2967 if (!target_was_examined(target
)) {
2968 LOG_ERROR("target not examined yet");
2972 return aarch64_init_debug_access(target
);
2975 COMMAND_HANDLER(aarch64_handle_disassemble_command
)
2977 struct target
*target
= get_current_target(CMD_CTX
);
2980 LOG_ERROR("No target selected");
2984 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
2986 if (aarch64
->common_magic
!= AARCH64_COMMON_MAGIC
) {
2987 command_print(CMD
, "current target isn't an AArch64");
2992 target_addr_t address
;
2996 COMMAND_PARSE_NUMBER(int, CMD_ARGV
[1], count
);
2999 COMMAND_PARSE_ADDRESS(CMD_ARGV
[0], address
);
3002 return ERROR_COMMAND_SYNTAX_ERROR
;
3005 return a64_disassemble(CMD
, target
, address
, count
);
3008 COMMAND_HANDLER(aarch64_mask_interrupts_command
)
3010 struct target
*target
= get_current_target(CMD_CTX
);
3011 struct aarch64_common
*aarch64
= target_to_aarch64(target
);
3013 static const struct nvp nvp_maskisr_modes
[] = {
3014 { .name
= "off", .value
= AARCH64_ISRMASK_OFF
},
3015 { .name
= "on", .value
= AARCH64_ISRMASK_ON
},
3016 { .name
= NULL
, .value
= -1 },
3018 const struct nvp
*n
;
3021 n
= nvp_name2value(nvp_maskisr_modes
, CMD_ARGV
[0]);
3023 LOG_ERROR("Unknown parameter: %s - should be off or on", CMD_ARGV
[0]);
3024 return ERROR_COMMAND_SYNTAX_ERROR
;
3027 aarch64
->isrmasking_mode
= n
->value
;
3030 n
= nvp_value2name(nvp_maskisr_modes
, aarch64
->isrmasking_mode
);
3031 command_print(CMD
, "aarch64 interrupt mask %s", n
->name
);
3036 COMMAND_HANDLER(aarch64_mcrmrc_command
)
3038 bool is_mcr
= false;
3039 unsigned int arg_cnt
= 5;
3041 if (!strcmp(CMD_NAME
, "mcr")) {
3046 if (arg_cnt
!= CMD_ARGC
)
3047 return ERROR_COMMAND_SYNTAX_ERROR
;
3049 struct target
*target
= get_current_target(CMD_CTX
);
3051 command_print(CMD
, "no current target");
3054 if (!target_was_examined(target
)) {
3055 command_print(CMD
, "%s: not yet examined", target_name(target
));
3056 return ERROR_TARGET_NOT_EXAMINED
;
3059 struct arm
*arm
= target_to_arm(target
);
3061 command_print(CMD
, "%s: not an ARM", target_name(target
));
3065 if (target
->state
!= TARGET_HALTED
) {
3066 command_print(CMD
, "Error: [%s] not halted", target_name(target
));
3067 return ERROR_TARGET_NOT_HALTED
;
3070 if (arm
->core_state
== ARM_STATE_AARCH64
) {
3071 command_print(CMD
, "%s: not 32-bit arm target", target_name(target
));
3082 /* NOTE: parameter sequence matches ARM instruction set usage:
3083 * MCR pNUM, op1, rX, CRn, CRm, op2 ; write CP from rX
3084 * MRC pNUM, op1, rX, CRn, CRm, op2 ; read CP into rX
3085 * The "rX" is necessarily omitted; it uses Tcl mechanisms.
3087 COMMAND_PARSE_NUMBER(int, CMD_ARGV
[0], cpnum
);
3089 command_print(CMD
, "coprocessor %d out of range", cpnum
);
3090 return ERROR_COMMAND_ARGUMENT_INVALID
;
3093 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[1], op1
);
3095 command_print(CMD
, "op1 %d out of range", op1
);
3096 return ERROR_COMMAND_ARGUMENT_INVALID
;
3099 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[2], crn
);
3101 command_print(CMD
, "CRn %d out of range", crn
);
3102 return ERROR_COMMAND_ARGUMENT_INVALID
;
3105 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[3], crm
);
3107 command_print(CMD
, "CRm %d out of range", crm
);
3108 return ERROR_COMMAND_ARGUMENT_INVALID
;
3111 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[4], op2
);
3113 command_print(CMD
, "op2 %d out of range", op2
);
3114 return ERROR_COMMAND_ARGUMENT_INVALID
;
3118 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[5], value
);
3120 /* NOTE: parameters reordered! */
3121 /* ARMV4_5_MCR(cpnum, op1, 0, crn, crm, op2) */
3122 int retval
= arm
->mcr(target
, cpnum
, op1
, op2
, crn
, crm
, value
);
3123 if (retval
!= ERROR_OK
)
3127 /* NOTE: parameters reordered! */
3128 /* ARMV4_5_MRC(cpnum, op1, 0, crn, crm, op2) */
3129 int retval
= arm
->mrc(target
, cpnum
, op1
, op2
, crn
, crm
, &value
);
3130 if (retval
!= ERROR_OK
)
3133 command_print(CMD
, "0x%" PRIx32
, value
);
3139 static const struct command_registration aarch64_exec_command_handlers
[] = {
3141 .name
= "cache_info",
3142 .handler
= aarch64_handle_cache_info_command
,
3143 .mode
= COMMAND_EXEC
,
3144 .help
= "display information about target caches",
3149 .handler
= aarch64_handle_dbginit_command
,
3150 .mode
= COMMAND_EXEC
,
3151 .help
= "Initialize core debug",
3155 .name
= "disassemble",
3156 .handler
= aarch64_handle_disassemble_command
,
3157 .mode
= COMMAND_EXEC
,
3158 .help
= "Disassemble instructions",
3159 .usage
= "address [count]",
3163 .handler
= aarch64_mask_interrupts_command
,
3164 .mode
= COMMAND_ANY
,
3165 .help
= "mask aarch64 interrupts during single-step",
3166 .usage
= "['on'|'off']",
3170 .mode
= COMMAND_EXEC
,
3171 .handler
= aarch64_mcrmrc_command
,
3172 .help
= "write coprocessor register",
3173 .usage
= "cpnum op1 CRn CRm op2 value",
3177 .mode
= COMMAND_EXEC
,
3178 .handler
= aarch64_mcrmrc_command
,
3179 .help
= "read coprocessor register",
3180 .usage
= "cpnum op1 CRn CRm op2",
3183 .chain
= smp_command_handlers
,
3187 COMMAND_REGISTRATION_DONE
3190 static const struct command_registration aarch64_command_handlers
[] = {
3193 .mode
= COMMAND_ANY
,
3194 .help
= "ARM Command Group",
3196 .chain
= semihosting_common_handlers
3199 .chain
= armv8_command_handlers
,
3203 .mode
= COMMAND_ANY
,
3204 .help
= "Aarch64 command group",
3206 .chain
= aarch64_exec_command_handlers
,
3208 COMMAND_REGISTRATION_DONE
3211 struct target_type aarch64_target
= {
3214 .poll
= aarch64_poll
,
3215 .arch_state
= armv8_arch_state
,
3217 .halt
= aarch64_halt
,
3218 .resume
= aarch64_resume
,
3219 .step
= aarch64_step
,
3221 .assert_reset
= aarch64_assert_reset
,
3222 .deassert_reset
= aarch64_deassert_reset
,
3224 /* REVISIT allow exporting VFP3 registers ... */
3225 .get_gdb_arch
= armv8_get_gdb_arch
,
3226 .get_gdb_reg_list
= armv8_get_gdb_reg_list
,
3228 .read_memory
= aarch64_read_memory
,
3229 .write_memory
= aarch64_write_memory
,
3231 .add_breakpoint
= aarch64_add_breakpoint
,
3232 .add_context_breakpoint
= aarch64_add_context_breakpoint
,
3233 .add_hybrid_breakpoint
= aarch64_add_hybrid_breakpoint
,
3234 .remove_breakpoint
= aarch64_remove_breakpoint
,
3235 .add_watchpoint
= aarch64_add_watchpoint
,
3236 .remove_watchpoint
= aarch64_remove_watchpoint
,
3237 .hit_watchpoint
= aarch64_hit_watchpoint
,
3239 .commands
= aarch64_command_handlers
,
3240 .target_create
= aarch64_target_create
,
3241 .target_jim_configure
= aarch64_jim_configure
,
3242 .init_target
= aarch64_init_target
,
3243 .deinit_target
= aarch64_deinit_target
,
3244 .examine
= aarch64_examine
,
3246 .read_phys_memory
= aarch64_read_phys_memory
,
3247 .write_phys_memory
= aarch64_write_phys_memory
,
3249 .virt2phys
= aarch64_virt2phys
,
3252 struct target_type armv8r_target
= {
3255 .poll
= aarch64_poll
,
3256 .arch_state
= armv8_arch_state
,
3258 .halt
= aarch64_halt
,
3259 .resume
= aarch64_resume
,
3260 .step
= aarch64_step
,
3262 .assert_reset
= aarch64_assert_reset
,
3263 .deassert_reset
= aarch64_deassert_reset
,
3265 /* REVISIT allow exporting VFP3 registers ... */
3266 .get_gdb_arch
= armv8_get_gdb_arch
,
3267 .get_gdb_reg_list
= armv8_get_gdb_reg_list
,
3269 .read_memory
= aarch64_read_phys_memory
,
3270 .write_memory
= aarch64_write_phys_memory
,
3272 .add_breakpoint
= aarch64_add_breakpoint
,
3273 .add_context_breakpoint
= aarch64_add_context_breakpoint
,
3274 .add_hybrid_breakpoint
= aarch64_add_hybrid_breakpoint
,
3275 .remove_breakpoint
= aarch64_remove_breakpoint
,
3276 .add_watchpoint
= aarch64_add_watchpoint
,
3277 .remove_watchpoint
= aarch64_remove_watchpoint
,
3278 .hit_watchpoint
= aarch64_hit_watchpoint
,
3280 .commands
= aarch64_command_handlers
,
3281 .target_create
= armv8r_target_create
,
3282 .target_jim_configure
= aarch64_jim_configure
,
3283 .init_target
= aarch64_init_target
,
3284 .deinit_target
= aarch64_deinit_target
,
3285 .examine
= aarch64_examine
,