1 /***************************************************************************
2 * Copyright (C) 2008 digenius technology GmbH. *
5 * Copyright (C) 2008 Oyvind Harboe oyvind.harboe@zylin.com *
7 * Copyright (C) 2008 Georg Acher <acher@in.tum.de> *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
14 * This program is distributed in the hope that it will be useful, *
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
17 * GNU General Public License for more details. *
19 * You should have received a copy of the GNU General Public License *
20 * along with this program; if not, write to the *
21 * Free Software Foundation, Inc., *
22 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
23 ***************************************************************************/
30 #include "target_type.h"
34 #define _DEBUG_INSTRUCTION_EXECUTION_
38 #define FNC_INFO LOG_DEBUG("-")
44 #define FNC_INFO_NOTIMPLEMENTED do { LOG_DEBUG("NOT IMPLEMENTED"); /*exit(-1);*/ } while (0)
46 #define FNC_INFO_NOTIMPLEMENTED
49 static int arm11_on_enter_debug_state(arm11_common_t
* arm11
);
51 bool arm11_config_memwrite_burst
= true;
52 bool arm11_config_memwrite_error_fatal
= true;
53 uint32_t arm11_vcr
= 0;
54 bool arm11_config_memrw_no_increment
= false;
55 bool arm11_config_step_irq_enable
= false;
57 #define ARM11_HANDLER(x) \
60 target_type_t arm11_target
=
65 ARM11_HANDLER(arch_state
),
67 ARM11_HANDLER(target_request_data
),
70 ARM11_HANDLER(resume
),
73 ARM11_HANDLER(assert_reset
),
74 ARM11_HANDLER(deassert_reset
),
75 ARM11_HANDLER(soft_reset_halt
),
77 ARM11_HANDLER(get_gdb_reg_list
),
79 ARM11_HANDLER(read_memory
),
80 ARM11_HANDLER(write_memory
),
82 ARM11_HANDLER(bulk_write_memory
),
84 ARM11_HANDLER(checksum_memory
),
86 ARM11_HANDLER(add_breakpoint
),
87 ARM11_HANDLER(remove_breakpoint
),
88 ARM11_HANDLER(add_watchpoint
),
89 ARM11_HANDLER(remove_watchpoint
),
91 ARM11_HANDLER(run_algorithm
),
93 ARM11_HANDLER(register_commands
),
94 ARM11_HANDLER(target_create
),
95 ARM11_HANDLER(init_target
),
96 ARM11_HANDLER(examine
),
100 int arm11_regs_arch_type
= -1;
118 ARM11_REGISTER_SPSR_FIQ
,
119 ARM11_REGISTER_SPSR_SVC
,
120 ARM11_REGISTER_SPSR_ABT
,
121 ARM11_REGISTER_SPSR_IRQ
,
122 ARM11_REGISTER_SPSR_UND
,
123 ARM11_REGISTER_SPSR_MON
,
132 typedef struct arm11_reg_defs_s
137 enum arm11_regtype type
;
140 /* update arm11_regcache_ids when changing this */
141 static const arm11_reg_defs_t arm11_reg_defs
[] =
143 {"r0", 0, 0, ARM11_REGISTER_CORE
},
144 {"r1", 1, 1, ARM11_REGISTER_CORE
},
145 {"r2", 2, 2, ARM11_REGISTER_CORE
},
146 {"r3", 3, 3, ARM11_REGISTER_CORE
},
147 {"r4", 4, 4, ARM11_REGISTER_CORE
},
148 {"r5", 5, 5, ARM11_REGISTER_CORE
},
149 {"r6", 6, 6, ARM11_REGISTER_CORE
},
150 {"r7", 7, 7, ARM11_REGISTER_CORE
},
151 {"r8", 8, 8, ARM11_REGISTER_CORE
},
152 {"r9", 9, 9, ARM11_REGISTER_CORE
},
153 {"r10", 10, 10, ARM11_REGISTER_CORE
},
154 {"r11", 11, 11, ARM11_REGISTER_CORE
},
155 {"r12", 12, 12, ARM11_REGISTER_CORE
},
156 {"sp", 13, 13, ARM11_REGISTER_CORE
},
157 {"lr", 14, 14, ARM11_REGISTER_CORE
},
158 {"pc", 15, 15, ARM11_REGISTER_CORE
},
160 #if ARM11_REGCACHE_FREGS
161 {"f0", 0, 16, ARM11_REGISTER_FX
},
162 {"f1", 1, 17, ARM11_REGISTER_FX
},
163 {"f2", 2, 18, ARM11_REGISTER_FX
},
164 {"f3", 3, 19, ARM11_REGISTER_FX
},
165 {"f4", 4, 20, ARM11_REGISTER_FX
},
166 {"f5", 5, 21, ARM11_REGISTER_FX
},
167 {"f6", 6, 22, ARM11_REGISTER_FX
},
168 {"f7", 7, 23, ARM11_REGISTER_FX
},
169 {"fps", 0, 24, ARM11_REGISTER_FPS
},
172 {"cpsr", 0, 25, ARM11_REGISTER_CPSR
},
174 #if ARM11_REGCACHE_MODEREGS
175 {"r8_fiq", 8, -1, ARM11_REGISTER_FIQ
},
176 {"r9_fiq", 9, -1, ARM11_REGISTER_FIQ
},
177 {"r10_fiq", 10, -1, ARM11_REGISTER_FIQ
},
178 {"r11_fiq", 11, -1, ARM11_REGISTER_FIQ
},
179 {"r12_fiq", 12, -1, ARM11_REGISTER_FIQ
},
180 {"r13_fiq", 13, -1, ARM11_REGISTER_FIQ
},
181 {"r14_fiq", 14, -1, ARM11_REGISTER_FIQ
},
182 {"spsr_fiq", 0, -1, ARM11_REGISTER_SPSR_FIQ
},
184 {"r13_svc", 13, -1, ARM11_REGISTER_SVC
},
185 {"r14_svc", 14, -1, ARM11_REGISTER_SVC
},
186 {"spsr_svc", 0, -1, ARM11_REGISTER_SPSR_SVC
},
188 {"r13_abt", 13, -1, ARM11_REGISTER_ABT
},
189 {"r14_abt", 14, -1, ARM11_REGISTER_ABT
},
190 {"spsr_abt", 0, -1, ARM11_REGISTER_SPSR_ABT
},
192 {"r13_irq", 13, -1, ARM11_REGISTER_IRQ
},
193 {"r14_irq", 14, -1, ARM11_REGISTER_IRQ
},
194 {"spsr_irq", 0, -1, ARM11_REGISTER_SPSR_IRQ
},
196 {"r13_und", 13, -1, ARM11_REGISTER_UND
},
197 {"r14_und", 14, -1, ARM11_REGISTER_UND
},
198 {"spsr_und", 0, -1, ARM11_REGISTER_SPSR_UND
},
201 {"r13_mon", 13, -1, ARM11_REGISTER_MON
},
202 {"r14_mon", 14, -1, ARM11_REGISTER_MON
},
203 {"spsr_mon", 0, -1, ARM11_REGISTER_SPSR_MON
},
206 /* Debug Registers */
207 {"dscr", 0, -1, ARM11_REGISTER_DSCR
},
208 {"wdtr", 0, -1, ARM11_REGISTER_WDTR
},
209 {"rdtr", 0, -1, ARM11_REGISTER_RDTR
},
212 enum arm11_regcache_ids
215 ARM11_RC_RX
= ARM11_RC_R0
,
230 ARM11_RC_SP
= ARM11_RC_R13
,
232 ARM11_RC_LR
= ARM11_RC_R14
,
234 ARM11_RC_PC
= ARM11_RC_R15
,
236 #if ARM11_REGCACHE_FREGS
238 ARM11_RC_FX
= ARM11_RC_F0
,
251 #if ARM11_REGCACHE_MODEREGS
289 #define ARM11_GDB_REGISTER_COUNT 26
291 uint8_t arm11_gdb_dummy_fp_value
[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
293 reg_t arm11_gdb_dummy_fp_reg
=
295 "GDB dummy floating-point register", arm11_gdb_dummy_fp_value
, 0, 1, 96, NULL
, 0, NULL
, 0
298 uint8_t arm11_gdb_dummy_fps_value
[] = {0, 0, 0, 0};
300 reg_t arm11_gdb_dummy_fps_reg
=
302 "GDB dummy floating-point status register", arm11_gdb_dummy_fps_value
, 0, 1, 32, NULL
, 0, NULL
, 0
307 /** Check and if necessary take control of the system
309 * \param arm11 Target state variable.
310 * \param dscr If the current DSCR content is
311 * available a pointer to a word holding the
312 * DSCR can be passed. Otherwise use NULL.
314 int arm11_check_init(arm11_common_t
* arm11
, uint32_t * dscr
)
318 uint32_t dscr_local_tmp_copy
;
322 dscr
= &dscr_local_tmp_copy
;
324 CHECK_RETVAL(arm11_read_DSCR(arm11
, dscr
));
327 if (!(*dscr
& ARM11_DSCR_MODE_SELECT
))
329 LOG_DEBUG("Bringing target into debug mode");
331 *dscr
|= ARM11_DSCR_MODE_SELECT
; /* Halt debug-mode */
332 arm11_write_DSCR(arm11
, *dscr
);
334 /* add further reset initialization here */
336 arm11
->simulate_reset_on_next_halt
= true;
338 if (*dscr
& ARM11_DSCR_CORE_HALTED
)
340 /** \todo TODO: this needs further scrutiny because
341 * arm11_on_enter_debug_state() never gets properly called.
342 * As a result we don't read the actual register states from
346 arm11
->target
->state
= TARGET_HALTED
;
347 arm11
->target
->debug_reason
= arm11_get_DSCR_debug_reason(*dscr
);
351 arm11
->target
->state
= TARGET_RUNNING
;
352 arm11
->target
->debug_reason
= DBG_REASON_NOTHALTED
;
355 arm11_sc7_clear_vbw(arm11
);
364 (arm11->reg_values[ARM11_RC_##x])
366 /** Save processor state.
368 * This is called when the HALT instruction has succeeded
369 * or on other occasions that stop the processor.
372 static int arm11_on_enter_debug_state(arm11_common_t
* arm11
)
376 for (size_t i
= 0; i
< asizeof(arm11
->reg_values
); i
++)
378 arm11
->reg_list
[i
].valid
= 1;
379 arm11
->reg_list
[i
].dirty
= 0;
383 CHECK_RETVAL(arm11_read_DSCR(arm11
, &R(DSCR
)));
387 if (R(DSCR
) & ARM11_DSCR_WDTR_FULL
)
389 arm11_add_debug_SCAN_N(arm11
, 0x05, ARM11_TAP_DEFAULT
);
391 arm11_add_IR(arm11
, ARM11_INTEST
, ARM11_TAP_DEFAULT
);
393 scan_field_t chain5_fields
[3];
395 arm11_setup_field(arm11
, 32, NULL
, &R(WDTR
), chain5_fields
+ 0);
396 arm11_setup_field(arm11
, 1, NULL
, NULL
, chain5_fields
+ 1);
397 arm11_setup_field(arm11
, 1, NULL
, NULL
, chain5_fields
+ 2);
399 arm11_add_dr_scan_vc(asizeof(chain5_fields
), chain5_fields
, TAP_DRPAUSE
);
403 arm11
->reg_list
[ARM11_RC_WDTR
].valid
= 0;
407 /* DSCR: set ARM11_DSCR_EXECUTE_ARM_INSTRUCTION_ENABLE */
408 /* ARM1176 spec says this is needed only for wDTR/rDTR's "ITR mode", but not to issue ITRs
409 ARM1136 seems to require this to issue ITR's as well */
411 uint32_t new_dscr
= R(DSCR
) | ARM11_DSCR_EXECUTE_ARM_INSTRUCTION_ENABLE
;
413 /* this executes JTAG queue: */
415 arm11_write_DSCR(arm11
, new_dscr
);
419 Before executing any instruction in debug state you have to drain the write buffer.
420 This ensures that no imprecise Data Aborts can return at a later point:*/
422 /** \todo TODO: Test drain write buffer. */
427 /* MRC p14,0,R0,c5,c10,0 */
428 // arm11_run_instr_no_data1(arm11, /*0xee150e1a*/0xe320f000);
430 /* mcr 15, 0, r0, cr7, cr10, {4} */
431 arm11_run_instr_no_data1(arm11
, 0xee070f9a);
433 uint32_t dscr
= arm11_read_DSCR(arm11
);
435 LOG_DEBUG("DRAIN, DSCR %08x", dscr
);
437 if (dscr
& ARM11_DSCR_STICKY_IMPRECISE_DATA_ABORT
)
439 arm11_run_instr_no_data1(arm11
, 0xe320f000);
441 dscr
= arm11_read_DSCR(arm11
);
443 LOG_DEBUG("DRAIN, DSCR %08x (DONE)", dscr
);
450 arm11_run_instr_data_prepare(arm11
);
454 /** \todo TODO: handle other mode registers */
456 for (size_t i
= 0; i
< 15; i
++)
458 /* MCR p14,0,R?,c0,c5,0 */
459 arm11_run_instr_data_from_core(arm11
, 0xEE000E15 | (i
<< 12), &R(RX
+ i
), 1);
464 /* check rDTRfull in DSCR */
466 if (R(DSCR
) & ARM11_DSCR_RDTR_FULL
)
468 /* MRC p14,0,R0,c0,c5,0 (move rDTR -> r0 (-> wDTR -> local var)) */
469 arm11_run_instr_data_from_core_via_r0(arm11
, 0xEE100E15, &R(RDTR
));
473 arm11
->reg_list
[ARM11_RC_RDTR
].valid
= 0;
478 /* MRS r0,CPSR (move CPSR -> r0 (-> wDTR -> local var)) */
479 arm11_run_instr_data_from_core_via_r0(arm11
, 0xE10F0000, &R(CPSR
));
483 /* MOV R0,PC (move PC -> r0 (-> wDTR -> local var)) */
484 arm11_run_instr_data_from_core_via_r0(arm11
, 0xE1A0000F, &R(PC
));
486 /* adjust PC depending on ARM state */
488 if (R(CPSR
) & ARM11_CPSR_J
) /* Java state */
490 arm11
->reg_values
[ARM11_RC_PC
] -= 0;
492 else if (R(CPSR
) & ARM11_CPSR_T
) /* Thumb state */
494 arm11
->reg_values
[ARM11_RC_PC
] -= 4;
498 arm11
->reg_values
[ARM11_RC_PC
] -= 8;
501 if (arm11
->simulate_reset_on_next_halt
)
503 arm11
->simulate_reset_on_next_halt
= false;
505 LOG_DEBUG("Reset c1 Control Register");
507 /* Write 0 (reset value) to Control register 0 to disable MMU/Cache etc. */
509 /* MCR p15,0,R0,c1,c0,0 */
510 arm11_run_instr_data_to_core_via_r0(arm11
, 0xee010f10, 0);
514 arm11_run_instr_data_finish(arm11
);
516 arm11_dump_reg_changes(arm11
);
521 void arm11_dump_reg_changes(arm11_common_t
* arm11
)
524 if (!(debug_level
>= LOG_LVL_DEBUG
))
529 for (size_t i
= 0; i
< ARM11_REGCACHE_COUNT
; i
++)
531 if (!arm11
->reg_list
[i
].valid
)
533 if (arm11
->reg_history
[i
].valid
)
534 LOG_DEBUG("%8s INVALID (%08" PRIx32
")", arm11_reg_defs
[i
].name
, arm11
->reg_history
[i
].value
);
538 if (arm11
->reg_history
[i
].valid
)
540 if (arm11
->reg_history
[i
].value
!= arm11
->reg_values
[i
])
541 LOG_DEBUG("%8s %08" PRIx32
" (%08" PRIx32
")", arm11_reg_defs
[i
].name
, arm11
->reg_values
[i
], arm11
->reg_history
[i
].value
);
545 LOG_DEBUG("%8s %08" PRIx32
" (INVALID)", arm11_reg_defs
[i
].name
, arm11
->reg_values
[i
]);
551 /** Restore processor state
553 * This is called in preparation for the RESTART function.
556 int arm11_leave_debug_state(arm11_common_t
* arm11
)
560 arm11_run_instr_data_prepare(arm11
);
562 /** \todo TODO: handle other mode registers */
564 /* restore R1 - R14 */
566 for (size_t i
= 1; i
< 15; i
++)
568 if (!arm11
->reg_list
[ARM11_RC_RX
+ i
].dirty
)
571 /* MRC p14,0,r?,c0,c5,0 */
572 arm11_run_instr_data_to_core1(arm11
, 0xee100e15 | (i
<< 12), R(RX
+ i
));
574 // LOG_DEBUG("RESTORE R" ZU " %08x", i, R(RX + i));
577 arm11_run_instr_data_finish(arm11
);
579 /* spec says clear wDTR and rDTR; we assume they are clear as
580 otherwise our programming would be sloppy */
584 CHECK_RETVAL(arm11_read_DSCR(arm11
, &DSCR
));
586 if (DSCR
& (ARM11_DSCR_RDTR_FULL
| ARM11_DSCR_WDTR_FULL
))
588 LOG_ERROR("wDTR/rDTR inconsistent (DSCR %08" PRIx32
")", DSCR
);
592 arm11_run_instr_data_prepare(arm11
);
594 /* restore original wDTR */
596 if ((R(DSCR
) & ARM11_DSCR_WDTR_FULL
) || arm11
->reg_list
[ARM11_RC_WDTR
].dirty
)
598 /* MCR p14,0,R0,c0,c5,0 */
599 arm11_run_instr_data_to_core_via_r0(arm11
, 0xee000e15, R(WDTR
));
605 arm11_run_instr_data_to_core_via_r0(arm11
, 0xe129f000, R(CPSR
));
610 arm11_run_instr_data_to_core_via_r0(arm11
, 0xe1a0f000, R(PC
));
614 /* MRC p14,0,r0,c0,c5,0 */
615 arm11_run_instr_data_to_core1(arm11
, 0xee100e15, R(R0
));
617 arm11_run_instr_data_finish(arm11
);
621 arm11_write_DSCR(arm11
, R(DSCR
));
625 if (R(DSCR
) & ARM11_DSCR_RDTR_FULL
|| arm11
->reg_list
[ARM11_RC_RDTR
].dirty
)
627 arm11_add_debug_SCAN_N(arm11
, 0x05, ARM11_TAP_DEFAULT
);
629 arm11_add_IR(arm11
, ARM11_EXTEST
, ARM11_TAP_DEFAULT
);
631 scan_field_t chain5_fields
[3];
633 uint8_t Ready
= 0; /* ignored */
634 uint8_t Valid
= 0; /* ignored */
636 arm11_setup_field(arm11
, 32, &R(RDTR
), NULL
, chain5_fields
+ 0);
637 arm11_setup_field(arm11
, 1, &Ready
, NULL
, chain5_fields
+ 1);
638 arm11_setup_field(arm11
, 1, &Valid
, NULL
, chain5_fields
+ 2);
640 arm11_add_dr_scan_vc(asizeof(chain5_fields
), chain5_fields
, TAP_DRPAUSE
);
643 arm11_record_register_history(arm11
);
648 void arm11_record_register_history(arm11_common_t
* arm11
)
650 for (size_t i
= 0; i
< ARM11_REGCACHE_COUNT
; i
++)
652 arm11
->reg_history
[i
].value
= arm11
->reg_values
[i
];
653 arm11
->reg_history
[i
].valid
= arm11
->reg_list
[i
].valid
;
655 arm11
->reg_list
[i
].valid
= 0;
656 arm11
->reg_list
[i
].dirty
= 0;
661 /* poll current target status */
662 int arm11_poll(struct target_s
*target
)
666 arm11_common_t
* arm11
= target
->arch_info
;
668 if (arm11
->trst_active
)
673 CHECK_RETVAL(arm11_read_DSCR(arm11
, &dscr
));
675 LOG_DEBUG("DSCR %08" PRIx32
"", dscr
);
677 CHECK_RETVAL(arm11_check_init(arm11
, &dscr
));
679 if (dscr
& ARM11_DSCR_CORE_HALTED
)
681 if (target
->state
!= TARGET_HALTED
)
683 enum target_state old_state
= target
->state
;
685 LOG_DEBUG("enter TARGET_HALTED");
686 target
->state
= TARGET_HALTED
;
687 target
->debug_reason
= arm11_get_DSCR_debug_reason(dscr
);
688 arm11_on_enter_debug_state(arm11
);
690 target_call_event_callbacks(target
,
691 old_state
== TARGET_DEBUG_RUNNING
? TARGET_EVENT_DEBUG_HALTED
: TARGET_EVENT_HALTED
);
696 if (target
->state
!= TARGET_RUNNING
&& target
->state
!= TARGET_DEBUG_RUNNING
)
698 LOG_DEBUG("enter TARGET_RUNNING");
699 target
->state
= TARGET_RUNNING
;
700 target
->debug_reason
= DBG_REASON_NOTHALTED
;
706 /* architecture specific status reply */
707 int arm11_arch_state(struct target_s
*target
)
709 arm11_common_t
* arm11
= target
->arch_info
;
711 LOG_USER("target halted due to %s\ncpsr: 0x%8.8" PRIx32
" pc: 0x%8.8" PRIx32
"",
712 Jim_Nvp_value2name_simple(nvp_target_debug_reason
, target
->debug_reason
)->name
,
719 /* target request support */
720 int arm11_target_request_data(struct target_s
*target
, uint32_t size
, uint8_t *buffer
)
722 FNC_INFO_NOTIMPLEMENTED
;
727 /* target execution control */
728 int arm11_halt(struct target_s
*target
)
732 arm11_common_t
* arm11
= target
->arch_info
;
734 LOG_DEBUG("target->state: %s",
735 target_state_name(target
));
737 if (target
->state
== TARGET_UNKNOWN
)
739 arm11
->simulate_reset_on_next_halt
= true;
742 if (target
->state
== TARGET_HALTED
)
744 LOG_DEBUG("target was already halted");
748 if (arm11
->trst_active
)
750 arm11
->halt_requested
= true;
754 arm11_add_IR(arm11
, ARM11_HALT
, TAP_IDLE
);
756 CHECK_RETVAL(jtag_execute_queue());
762 CHECK_RETVAL(arm11_read_DSCR(arm11
, &dscr
));
764 if (dscr
& ARM11_DSCR_CORE_HALTED
)
768 arm11_on_enter_debug_state(arm11
);
770 enum target_state old_state
= target
->state
;
772 target
->state
= TARGET_HALTED
;
773 target
->debug_reason
= arm11_get_DSCR_debug_reason(dscr
);
776 target_call_event_callbacks(target
,
777 old_state
== TARGET_DEBUG_RUNNING
? TARGET_EVENT_DEBUG_HALTED
: TARGET_EVENT_HALTED
));
782 int arm11_resume(struct target_s
*target
, int current
, uint32_t address
, int handle_breakpoints
, int debug_execution
)
786 // LOG_DEBUG("current %d address %08x handle_breakpoints %d debug_execution %d",
787 // current, address, handle_breakpoints, debug_execution);
789 arm11_common_t
* arm11
= target
->arch_info
;
791 LOG_DEBUG("target->state: %s",
792 target_state_name(target
));
795 if (target
->state
!= TARGET_HALTED
)
797 LOG_ERROR("Target not halted");
798 return ERROR_TARGET_NOT_HALTED
;
804 LOG_DEBUG("RESUME PC %08" PRIx32
"%s", R(PC
), !current
? "!" : "");
806 /* clear breakpoints/watchpoints and VCR*/
807 arm11_sc7_clear_vbw(arm11
);
809 /* Set up breakpoints */
810 if (!debug_execution
)
812 /* check if one matches PC and step over it if necessary */
816 for (bp
= target
->breakpoints
; bp
; bp
= bp
->next
)
818 if (bp
->address
== R(PC
))
820 LOG_DEBUG("must step over %08" PRIx32
"", bp
->address
);
821 arm11_step(target
, 1, 0, 0);
826 /* set all breakpoints */
830 for (bp
= target
->breakpoints
; bp
; bp
= bp
->next
)
832 arm11_sc7_action_t brp
[2];
835 brp
[0].address
= ARM11_SC7_BVR0
+ brp_num
;
836 brp
[0].value
= bp
->address
;
838 brp
[1].address
= ARM11_SC7_BCR0
+ brp_num
;
839 brp
[1].value
= 0x1 | (3 << 1) | (0x0F << 5) | (0 << 14) | (0 << 16) | (0 << 20) | (0 << 21);
841 arm11_sc7_run(arm11
, brp
, asizeof(brp
));
843 LOG_DEBUG("Add BP " ZU
" at %08" PRIx32
"", brp_num
, bp
->address
);
848 arm11_sc7_set_vcr(arm11
, arm11_vcr
);
851 arm11_leave_debug_state(arm11
);
853 arm11_add_IR(arm11
, ARM11_RESTART
, TAP_IDLE
);
855 CHECK_RETVAL(jtag_execute_queue());
861 CHECK_RETVAL(arm11_read_DSCR(arm11
, &dscr
));
863 LOG_DEBUG("DSCR %08" PRIx32
"", dscr
);
865 if (dscr
& ARM11_DSCR_CORE_RESTARTED
)
869 if (!debug_execution
)
871 target
->state
= TARGET_RUNNING
;
872 target
->debug_reason
= DBG_REASON_NOTHALTED
;
874 CHECK_RETVAL(target_call_event_callbacks(target
, TARGET_EVENT_RESUMED
));
878 target
->state
= TARGET_DEBUG_RUNNING
;
879 target
->debug_reason
= DBG_REASON_NOTHALTED
;
881 CHECK_RETVAL(target_call_event_callbacks(target
, TARGET_EVENT_RESUMED
));
887 int arm11_step(struct target_s
*target
, int current
, uint32_t address
, int handle_breakpoints
)
891 LOG_DEBUG("target->state: %s",
892 target_state_name(target
));
894 if (target
->state
!= TARGET_HALTED
)
896 LOG_WARNING("target was not halted");
897 return ERROR_TARGET_NOT_HALTED
;
900 arm11_common_t
* arm11
= target
->arch_info
;
905 LOG_DEBUG("STEP PC %08" PRIx32
"%s", R(PC
), !current
? "!" : "");
907 /** \todo TODO: Thumb not supported here */
909 uint32_t next_instruction
;
911 CHECK_RETVAL(arm11_read_memory_word(arm11
, R(PC
), &next_instruction
));
914 if ((next_instruction
& 0xFFF00070) == 0xe1200070)
917 arm11
->reg_list
[ARM11_RC_PC
].valid
= 1;
918 arm11
->reg_list
[ARM11_RC_PC
].dirty
= 0;
919 LOG_DEBUG("Skipping BKPT");
921 /* skip over Wait for interrupt / Standby */
922 /* mcr 15, 0, r?, cr7, cr0, {4} */
923 else if ((next_instruction
& 0xFFFF0FFF) == 0xee070f90)
926 arm11
->reg_list
[ARM11_RC_PC
].valid
= 1;
927 arm11
->reg_list
[ARM11_RC_PC
].dirty
= 0;
928 LOG_DEBUG("Skipping WFI");
930 /* ignore B to self */
931 else if ((next_instruction
& 0xFEFFFFFF) == 0xeafffffe)
933 LOG_DEBUG("Not stepping jump to self");
937 /** \todo TODO: check if break-/watchpoints make any sense at all in combination
940 /** \todo TODO: check if disabling IRQs might be a good idea here. Alternatively
941 * the VCR might be something worth looking into. */
944 /* Set up breakpoint for stepping */
946 arm11_sc7_action_t brp
[2];
949 brp
[0].address
= ARM11_SC7_BVR0
;
950 brp
[0].value
= R(PC
);
952 brp
[1].address
= ARM11_SC7_BCR0
;
953 brp
[1].value
= 0x1 | (3 << 1) | (0x0F << 5) | (0 << 14) | (0 << 16) | (0 << 20) | (2 << 21);
955 CHECK_RETVAL(arm11_sc7_run(arm11
, brp
, asizeof(brp
)));
960 if (arm11_config_step_irq_enable
)
961 R(DSCR
) &= ~ARM11_DSCR_INTERRUPTS_DISABLE
; /* should be redundant */
963 R(DSCR
) |= ARM11_DSCR_INTERRUPTS_DISABLE
;
966 CHECK_RETVAL(arm11_leave_debug_state(arm11
));
968 arm11_add_IR(arm11
, ARM11_RESTART
, TAP_IDLE
);
970 CHECK_RETVAL(jtag_execute_queue());
972 /** \todo TODO: add a timeout */
980 CHECK_RETVAL(arm11_read_DSCR(arm11
, &dscr
));
982 LOG_DEBUG("DSCR %08" PRIx32
"e", dscr
);
984 if ((dscr
& (ARM11_DSCR_CORE_RESTARTED
| ARM11_DSCR_CORE_HALTED
)) ==
985 (ARM11_DSCR_CORE_RESTARTED
| ARM11_DSCR_CORE_HALTED
))
989 /* clear breakpoint */
990 arm11_sc7_clear_vbw(arm11
);
993 CHECK_RETVAL(arm11_on_enter_debug_state(arm11
));
995 /* restore default state */
996 R(DSCR
) &= ~ARM11_DSCR_INTERRUPTS_DISABLE
;
1000 // target->state = TARGET_HALTED;
1001 target
->debug_reason
= DBG_REASON_SINGLESTEP
;
1003 CHECK_RETVAL(target_call_event_callbacks(target
, TARGET_EVENT_HALTED
));
1008 /* target reset control */
1009 int arm11_assert_reset(struct target_s
*target
)
1014 /* assert reset lines */
1015 /* resets only the DBGTAP, not the ARM */
1017 jtag_add_reset(1, 0);
1018 jtag_add_sleep(5000);
1020 arm11_common_t
* arm11
= target
->arch_info
;
1021 arm11
->trst_active
= true;
1024 if (target
->reset_halt
)
1026 CHECK_RETVAL(target_halt(target
));
1032 int arm11_deassert_reset(struct target_s
*target
)
1037 LOG_DEBUG("target->state: %s",
1038 target_state_name(target
));
1041 /* deassert reset lines */
1042 jtag_add_reset(0, 0);
1044 arm11_common_t
* arm11
= target
->arch_info
;
1045 arm11
->trst_active
= false;
1047 if (arm11
->halt_requested
)
1048 return arm11_halt(target
);
1054 int arm11_soft_reset_halt(struct target_s
*target
)
1056 FNC_INFO_NOTIMPLEMENTED
;
1061 /* target register access for gdb */
1062 int arm11_get_gdb_reg_list(struct target_s
*target
, struct reg_s
**reg_list
[], int *reg_list_size
)
1066 arm11_common_t
* arm11
= target
->arch_info
;
1068 *reg_list_size
= ARM11_GDB_REGISTER_COUNT
;
1069 *reg_list
= malloc(sizeof(reg_t
*) * ARM11_GDB_REGISTER_COUNT
);
1071 for (size_t i
= 16; i
< 24; i
++)
1073 (*reg_list
)[i
] = &arm11_gdb_dummy_fp_reg
;
1076 (*reg_list
)[24] = &arm11_gdb_dummy_fps_reg
;
1078 for (size_t i
= 0; i
< ARM11_REGCACHE_COUNT
; i
++)
1080 if (arm11_reg_defs
[i
].gdb_num
== -1)
1083 (*reg_list
)[arm11_reg_defs
[i
].gdb_num
] = arm11
->reg_list
+ i
;
1089 /* target memory access
1090 * size: 1 = byte (8bit), 2 = half-word (16bit), 4 = word (32bit)
1091 * count: number of items of <size>
1093 int arm11_read_memory(struct target_s
*target
, uint32_t address
, uint32_t size
, uint32_t count
, uint8_t *buffer
)
1095 /** \todo TODO: check if buffer cast to uint32_t* and uint16_t* might cause alignment problems */
1099 if (target
->state
!= TARGET_HALTED
)
1101 LOG_WARNING("target was not halted");
1102 return ERROR_TARGET_NOT_HALTED
;
1105 LOG_DEBUG("ADDR %08" PRIx32
" SIZE %08" PRIx32
" COUNT %08" PRIx32
"", address
, size
, count
);
1107 arm11_common_t
* arm11
= target
->arch_info
;
1109 arm11_run_instr_data_prepare(arm11
);
1111 /* MRC p14,0,r0,c0,c5,0 */
1112 arm11_run_instr_data_to_core1(arm11
, 0xee100e15, address
);
1117 /** \todo TODO: check if dirty is the right choice to force a rewrite on arm11_resume() */
1118 arm11
->reg_list
[ARM11_RC_R1
].dirty
= 1;
1120 for (size_t i
= 0; i
< count
; i
++)
1122 /* ldrb r1, [r0], #1 */
1124 arm11_run_instr_no_data1(arm11
,
1125 !arm11_config_memrw_no_increment
? 0xe4d01001 : 0xe5d01000);
1128 /* MCR p14,0,R1,c0,c5,0 */
1129 arm11_run_instr_data_from_core(arm11
, 0xEE001E15, &res
, 1);
1138 arm11
->reg_list
[ARM11_RC_R1
].dirty
= 1;
1140 for (size_t i
= 0; i
< count
; i
++)
1142 /* ldrh r1, [r0], #2 */
1143 arm11_run_instr_no_data1(arm11
,
1144 !arm11_config_memrw_no_increment
? 0xe0d010b2 : 0xe1d010b0);
1148 /* MCR p14,0,R1,c0,c5,0 */
1149 arm11_run_instr_data_from_core(arm11
, 0xEE001E15, &res
, 1);
1151 uint16_t svalue
= res
;
1152 memcpy(buffer
+ count
* sizeof(uint16_t), &svalue
, sizeof(uint16_t));
1160 uint32_t instr
= !arm11_config_memrw_no_increment
? 0xecb05e01 : 0xed905e00;
1161 /** \todo TODO: buffer cast to uint32_t* causes alignment warnings */
1162 uint32_t *words
= (uint32_t *)buffer
;
1164 /* LDC p14,c5,[R0],#4 */
1165 /* LDC p14,c5,[R0] */
1166 arm11_run_instr_data_from_core(arm11
, instr
, words
, count
);
1171 arm11_run_instr_data_finish(arm11
);
1176 int arm11_write_memory(struct target_s
*target
, uint32_t address
, uint32_t size
, uint32_t count
, uint8_t *buffer
)
1180 if (target
->state
!= TARGET_HALTED
)
1182 LOG_WARNING("target was not halted");
1183 return ERROR_TARGET_NOT_HALTED
;
1186 LOG_DEBUG("ADDR %08" PRIx32
" SIZE %08" PRIx32
" COUNT %08" PRIx32
"", address
, size
, count
);
1188 arm11_common_t
* arm11
= target
->arch_info
;
1190 arm11_run_instr_data_prepare(arm11
);
1192 /* MRC p14,0,r0,c0,c5,0 */
1193 arm11_run_instr_data_to_core1(arm11
, 0xee100e15, address
);
1199 arm11
->reg_list
[ARM11_RC_R1
].dirty
= 1;
1201 for (size_t i
= 0; i
< count
; i
++)
1203 /* MRC p14,0,r1,c0,c5,0 */
1204 arm11_run_instr_data_to_core1(arm11
, 0xee101e15, *buffer
++);
1206 /* strb r1, [r0], #1 */
1208 arm11_run_instr_no_data1(arm11
,
1209 !arm11_config_memrw_no_increment
? 0xe4c01001 : 0xe5c01000);
1217 arm11
->reg_list
[ARM11_RC_R1
].dirty
= 1;
1219 for (size_t i
= 0; i
< count
; i
++)
1222 memcpy(&value
, buffer
+ count
* sizeof(uint16_t), sizeof(uint16_t));
1224 /* MRC p14,0,r1,c0,c5,0 */
1225 arm11_run_instr_data_to_core1(arm11
, 0xee101e15, value
);
1227 /* strh r1, [r0], #2 */
1229 arm11_run_instr_no_data1(arm11
,
1230 !arm11_config_memrw_no_increment
? 0xe0c010b2 : 0xe1c010b0);
1237 uint32_t instr
= !arm11_config_memrw_no_increment
? 0xeca05e01 : 0xed805e00;
1239 /** \todo TODO: buffer cast to uint32_t* causes alignment warnings */
1240 uint32_t *words
= (uint32_t*)buffer
;
1242 if (!arm11_config_memwrite_burst
)
1244 /* STC p14,c5,[R0],#4 */
1245 /* STC p14,c5,[R0]*/
1246 arm11_run_instr_data_to_core(arm11
, instr
, words
, count
);
1250 /* STC p14,c5,[R0],#4 */
1251 /* STC p14,c5,[R0]*/
1252 arm11_run_instr_data_to_core_noack(arm11
, instr
, words
, count
);
1260 /* r0 verification */
1261 if (!arm11_config_memrw_no_increment
)
1265 /* MCR p14,0,R0,c0,c5,0 */
1266 arm11_run_instr_data_from_core(arm11
, 0xEE000E15, &r0
, 1);
1268 if (address
+ size
* count
!= r0
)
1270 LOG_ERROR("Data transfer failed. (%d)", (int)((r0
- address
) - size
* count
));
1272 if (arm11_config_memwrite_burst
)
1273 LOG_ERROR("use 'arm11 memwrite burst disable' to disable fast burst mode");
1275 if (arm11_config_memwrite_error_fatal
)
1281 arm11_run_instr_data_finish(arm11
);
1287 /* write target memory in multiples of 4 byte, optimized for writing large quantities of data */
1288 int arm11_bulk_write_memory(struct target_s
*target
, uint32_t address
, uint32_t count
, uint8_t *buffer
)
1292 if (target
->state
!= TARGET_HALTED
)
1294 LOG_WARNING("target was not halted");
1295 return ERROR_TARGET_NOT_HALTED
;
1298 return arm11_write_memory(target
, address
, 4, count
, buffer
);
1301 /* here we have nothing target specific to contribute, so we fail and then the
1302 * fallback code will read data from the target and calculate the CRC on the
1305 int arm11_checksum_memory(struct target_s
*target
, uint32_t address
, uint32_t count
, uint32_t* checksum
)
1310 /* target break-/watchpoint control
1311 * rw: 0 = write, 1 = read, 2 = access
1313 int arm11_add_breakpoint(struct target_s
*target
, breakpoint_t
*breakpoint
)
1317 arm11_common_t
* arm11
= target
->arch_info
;
1320 if (breakpoint
->type
== BKPT_SOFT
)
1322 LOG_INFO("sw breakpoint requested, but software breakpoints not enabled");
1323 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1327 if (!arm11
->free_brps
)
1329 LOG_DEBUG("no breakpoint unit available for hardware breakpoint");
1330 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1333 if (breakpoint
->length
!= 4)
1335 LOG_DEBUG("only breakpoints of four bytes length supported");
1336 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1344 int arm11_remove_breakpoint(struct target_s
*target
, breakpoint_t
*breakpoint
)
1348 arm11_common_t
* arm11
= target
->arch_info
;
1355 int arm11_add_watchpoint(struct target_s
*target
, watchpoint_t
*watchpoint
)
1357 FNC_INFO_NOTIMPLEMENTED
;
1362 int arm11_remove_watchpoint(struct target_s
*target
, watchpoint_t
*watchpoint
)
1364 FNC_INFO_NOTIMPLEMENTED
;
1369 // HACKHACKHACK - FIXME mode/state
1370 /* target algorithm support */
1371 int arm11_run_algorithm(struct target_s
*target
, int num_mem_params
, mem_param_t
*mem_params
,
1372 int num_reg_params
, reg_param_t
*reg_params
, uint32_t entry_point
, uint32_t exit_point
,
1373 int timeout_ms
, void *arch_info
)
1375 arm11_common_t
*arm11
= target
->arch_info
;
1376 // enum armv4_5_state core_state = arm11->core_state;
1377 // enum armv4_5_mode core_mode = arm11->core_mode;
1378 uint32_t context
[16];
1380 int exit_breakpoint_size
= 0;
1381 int retval
= ERROR_OK
;
1382 LOG_DEBUG("Running algorithm");
1385 if (target
->state
!= TARGET_HALTED
)
1387 LOG_WARNING("target not halted");
1388 return ERROR_TARGET_NOT_HALTED
;
1392 // if (armv4_5_mode_to_number(arm11->core_mode)==-1)
1393 // return ERROR_FAIL;
1396 for (size_t i
= 0; i
< 16; i
++)
1398 context
[i
] = buf_get_u32((uint8_t*)(&arm11
->reg_values
[i
]),0,32);
1399 LOG_DEBUG("Save %zi: 0x%" PRIx32
"",i
,context
[i
]);
1402 cpsr
= buf_get_u32((uint8_t*)(arm11
->reg_values
+ ARM11_RC_CPSR
),0,32);
1403 LOG_DEBUG("Save CPSR: 0x%" PRIx32
"", cpsr
);
1405 for (int i
= 0; i
< num_mem_params
; i
++)
1407 target_write_buffer(target
, mem_params
[i
].address
, mem_params
[i
].size
, mem_params
[i
].value
);
1410 // Set register parameters
1411 for (int i
= 0; i
< num_reg_params
; i
++)
1413 reg_t
*reg
= register_get_by_name(arm11
->core_cache
, reg_params
[i
].reg_name
, 0);
1416 LOG_ERROR("BUG: register '%s' not found", reg_params
[i
].reg_name
);
1420 if (reg
->size
!= reg_params
[i
].size
)
1422 LOG_ERROR("BUG: register '%s' size doesn't match reg_params[i].size", reg_params
[i
].reg_name
);
1425 arm11_set_reg(reg
,reg_params
[i
].value
);
1426 // printf("%i: Set %s =%08x\n", i, reg_params[i].reg_name,val);
1429 exit_breakpoint_size
= 4;
1431 /* arm11->core_state = arm11_algorithm_info->core_state;
1432 if (arm11->core_state == ARMV4_5_STATE_ARM)
1433 exit_breakpoint_size = 4;
1434 else if (arm11->core_state == ARMV4_5_STATE_THUMB)
1435 exit_breakpoint_size = 2;
1438 LOG_ERROR("BUG: can't execute algorithms when not in ARM or Thumb state");
1444 /* arm11 at this point only supports ARM not THUMB mode
1445 however if this test needs to be reactivated the current state can be read back
1448 if (arm11_algorithm_info
->core_mode
!= ARMV4_5_MODE_ANY
)
1450 LOG_DEBUG("setting core_mode: 0x%2.2x", arm11_algorithm_info
->core_mode
);
1451 buf_set_u32(arm11
->reg_list
[ARM11_RC_CPSR
].value
, 0, 5, arm11_algorithm_info
->core_mode
);
1452 arm11
->reg_list
[ARM11_RC_CPSR
].dirty
= 1;
1453 arm11
->reg_list
[ARM11_RC_CPSR
].valid
= 1;
1457 if ((retval
= breakpoint_add(target
, exit_point
, exit_breakpoint_size
, BKPT_HARD
)) != ERROR_OK
)
1459 LOG_ERROR("can't add breakpoint to finish algorithm execution");
1460 retval
= ERROR_TARGET_FAILURE
;
1464 // no debug, otherwise breakpoint is not set
1465 CHECK_RETVAL(target_resume(target
, 0, entry_point
, 1, 0));
1467 CHECK_RETVAL(target_wait_state(target
, TARGET_HALTED
, timeout_ms
));
1469 if (target
->state
!= TARGET_HALTED
)
1471 CHECK_RETVAL(target_halt(target
));
1473 CHECK_RETVAL(target_wait_state(target
, TARGET_HALTED
, 500));
1475 retval
= ERROR_TARGET_TIMEOUT
;
1477 goto del_breakpoint
;
1480 if (buf_get_u32(arm11
->reg_list
[15].value
, 0, 32) != exit_point
)
1482 LOG_WARNING("target reentered debug state, but not at the desired exit point: 0x%4.4" PRIx32
"",
1483 buf_get_u32(arm11
->reg_list
[15].value
, 0, 32));
1484 retval
= ERROR_TARGET_TIMEOUT
;
1485 goto del_breakpoint
;
1488 for (int i
= 0; i
< num_mem_params
; i
++)
1490 if (mem_params
[i
].direction
!= PARAM_OUT
)
1491 target_read_buffer(target
, mem_params
[i
].address
, mem_params
[i
].size
, mem_params
[i
].value
);
1494 for (int i
= 0; i
< num_reg_params
; i
++)
1496 if (reg_params
[i
].direction
!= PARAM_OUT
)
1498 reg_t
*reg
= register_get_by_name(arm11
->core_cache
, reg_params
[i
].reg_name
, 0);
1501 LOG_ERROR("BUG: register '%s' not found", reg_params
[i
].reg_name
);
1505 if (reg
->size
!= reg_params
[i
].size
)
1507 LOG_ERROR("BUG: register '%s' size doesn't match reg_params[i].size", reg_params
[i
].reg_name
);
1511 buf_set_u32(reg_params
[i
].value
, 0, 32, buf_get_u32(reg
->value
, 0, 32));
1516 breakpoint_remove(target
, exit_point
);
1520 for (size_t i
= 0; i
< 16; i
++)
1522 LOG_DEBUG("restoring register %s with value 0x%8.8" PRIx32
"",
1523 arm11
->reg_list
[i
].name
, context
[i
]);
1524 arm11_set_reg(&arm11
->reg_list
[i
], (uint8_t*)&context
[i
]);
1526 LOG_DEBUG("restoring CPSR with value 0x%8.8" PRIx32
"", cpsr
);
1527 arm11_set_reg(&arm11
->reg_list
[ARM11_RC_CPSR
], (uint8_t*)&cpsr
);
1529 // arm11->core_state = core_state;
1530 // arm11->core_mode = core_mode;
1535 int arm11_target_create(struct target_s
*target
, Jim_Interp
*interp
)
1539 NEW(arm11_common_t
, arm11
, 1);
1541 arm11
->target
= target
;
1543 if (target
->tap
== NULL
)
1546 if (target
->tap
->ir_length
!= 5)
1548 LOG_ERROR("'target arm11' expects IR LENGTH = 5");
1549 return ERROR_COMMAND_SYNTAX_ERROR
;
1552 target
->arch_info
= arm11
;
1557 int arm11_init_target(struct command_context_s
*cmd_ctx
, struct target_s
*target
)
1559 /* Initialize anything we can set up without talking to the target */
1560 return arm11_build_reg_cache(target
);
1563 /* talk to the target and set things up */
1564 int arm11_examine(struct target_s
*target
)
1568 arm11_common_t
* arm11
= target
->arch_info
;
1572 arm11_add_IR(arm11
, ARM11_IDCODE
, ARM11_TAP_DEFAULT
);
1574 scan_field_t idcode_field
;
1576 arm11_setup_field(arm11
, 32, NULL
, &arm11
->device_id
, &idcode_field
);
1578 arm11_add_dr_scan_vc(1, &idcode_field
, TAP_DRPAUSE
);
1582 arm11_add_debug_SCAN_N(arm11
, 0x00, ARM11_TAP_DEFAULT
);
1584 arm11_add_IR(arm11
, ARM11_INTEST
, ARM11_TAP_DEFAULT
);
1586 scan_field_t chain0_fields
[2];
1588 arm11_setup_field(arm11
, 32, NULL
, &arm11
->didr
, chain0_fields
+ 0);
1589 arm11_setup_field(arm11
, 8, NULL
, &arm11
->implementor
, chain0_fields
+ 1);
1591 arm11_add_dr_scan_vc(asizeof(chain0_fields
), chain0_fields
, TAP_IDLE
);
1593 CHECK_RETVAL(jtag_execute_queue());
1595 switch (arm11
->device_id
& 0x0FFFF000)
1597 case 0x07B36000: LOG_INFO("found ARM1136"); break;
1598 case 0x07B56000: LOG_INFO("found ARM1156"); break;
1599 case 0x07B76000: LOG_INFO("found ARM1176"); break;
1602 LOG_ERROR("'target arm11' expects IDCODE 0x*7B*7****");
1607 arm11
->debug_version
= (arm11
->didr
>> 16) & 0x0F;
1609 if (arm11
->debug_version
!= ARM11_DEBUG_V6
&&
1610 arm11
->debug_version
!= ARM11_DEBUG_V61
)
1612 LOG_ERROR("Only ARMv6 v6 and v6.1 architectures supported.");
1616 arm11
->brp
= ((arm11
->didr
>> 24) & 0x0F) + 1;
1617 arm11
->wrp
= ((arm11
->didr
>> 28) & 0x0F) + 1;
1619 /** \todo TODO: reserve one brp slot if we allow breakpoints during step */
1620 arm11
->free_brps
= arm11
->brp
;
1621 arm11
->free_wrps
= arm11
->wrp
;
1623 LOG_DEBUG("IDCODE %08" PRIx32
" IMPLEMENTOR %02x DIDR %08" PRIx32
"",
1625 (int)(arm11
->implementor
),
1628 /* as a side-effect this reads DSCR and thus
1629 * clears the ARM11_DSCR_STICKY_PRECISE_DATA_ABORT / Sticky Precise Data Abort Flag
1630 * as suggested by the spec.
1633 arm11_check_init(arm11
, NULL
);
1635 target_set_examined(target
);
1640 int arm11_quit(void)
1642 FNC_INFO_NOTIMPLEMENTED
;
1647 /** Load a register that is marked !valid in the register cache */
1648 int arm11_get_reg(reg_t
*reg
)
1652 target_t
* target
= ((arm11_reg_state_t
*)reg
->arch_info
)->target
;
1654 if (target
->state
!= TARGET_HALTED
)
1656 LOG_WARNING("target was not halted");
1657 return ERROR_TARGET_NOT_HALTED
;
1660 /** \todo TODO: Check this. We assume that all registers are fetched at debug entry. */
1663 arm11_common_t
*arm11
= target
->arch_info
;
1664 const arm11_reg_defs_t
* arm11_reg_info
= arm11_reg_defs
+ ((arm11_reg_state_t
*)reg
->arch_info
)->def_index
;
1670 /** Change a value in the register cache */
1671 int arm11_set_reg(reg_t
*reg
, uint8_t *buf
)
1675 target_t
* target
= ((arm11_reg_state_t
*)reg
->arch_info
)->target
;
1676 arm11_common_t
*arm11
= target
->arch_info
;
1677 // const arm11_reg_defs_t * arm11_reg_info = arm11_reg_defs + ((arm11_reg_state_t *)reg->arch_info)->def_index;
1679 arm11
->reg_values
[((arm11_reg_state_t
*)reg
->arch_info
)->def_index
] = buf_get_u32(buf
, 0, 32);
1686 int arm11_build_reg_cache(target_t
*target
)
1688 arm11_common_t
*arm11
= target
->arch_info
;
1690 NEW(reg_cache_t
, cache
, 1);
1691 NEW(reg_t
, reg_list
, ARM11_REGCACHE_COUNT
);
1692 NEW(arm11_reg_state_t
, arm11_reg_states
, ARM11_REGCACHE_COUNT
);
1694 if (arm11_regs_arch_type
== -1)
1695 arm11_regs_arch_type
= register_reg_arch_type(arm11_get_reg
, arm11_set_reg
);
1697 register_init_dummy(&arm11_gdb_dummy_fp_reg
);
1698 register_init_dummy(&arm11_gdb_dummy_fps_reg
);
1700 arm11
->reg_list
= reg_list
;
1702 /* Build the process context cache */
1703 cache
->name
= "arm11 registers";
1705 cache
->reg_list
= reg_list
;
1706 cache
->num_regs
= ARM11_REGCACHE_COUNT
;
1708 reg_cache_t
**cache_p
= register_get_last_cache_p(&target
->reg_cache
);
1711 arm11
->core_cache
= cache
;
1712 // armv7m->process_context = cache;
1716 /* Not very elegant assertion */
1717 if (ARM11_REGCACHE_COUNT
!= asizeof(arm11
->reg_values
) ||
1718 ARM11_REGCACHE_COUNT
!= asizeof(arm11_reg_defs
) ||
1719 ARM11_REGCACHE_COUNT
!= ARM11_RC_MAX
)
1721 LOG_ERROR("BUG: arm11->reg_values inconsistent (%d " ZU
" " ZU
" %d)", ARM11_REGCACHE_COUNT
, asizeof(arm11
->reg_values
), asizeof(arm11_reg_defs
), ARM11_RC_MAX
);
1725 for (i
= 0; i
< ARM11_REGCACHE_COUNT
; i
++)
1727 reg_t
* r
= reg_list
+ i
;
1728 const arm11_reg_defs_t
* rd
= arm11_reg_defs
+ i
;
1729 arm11_reg_state_t
* rs
= arm11_reg_states
+ i
;
1733 r
->value
= (uint8_t *)(arm11
->reg_values
+ i
);
1736 r
->bitfield_desc
= NULL
;
1737 r
->num_bitfields
= 0;
1738 r
->arch_type
= arm11_regs_arch_type
;
1742 rs
->target
= target
;
1748 int arm11_handle_bool(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
, bool * var
, char * name
)
1752 LOG_INFO("%s is %s.", name
, *var
? "enabled" : "disabled");
1757 return ERROR_COMMAND_SYNTAX_ERROR
;
1762 case 'f': /* false */
1764 case 'd': /* disable */
1770 case 't': /* true */
1772 case 'e': /* enable */
1778 LOG_INFO("%s %s.", *var
? "Enabled" : "Disabled", name
);
1783 #define BOOL_WRAPPER(name, print_name) \
1784 int arm11_handle_bool_##name(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) \
1786 return arm11_handle_bool(cmd_ctx, cmd, args, argc, &arm11_config_##name, print_name); \
1789 #define RC_TOP(name, descr, more) \
1791 command_t * new_cmd = register_command(cmd_ctx, top_cmd, name, NULL, COMMAND_ANY, descr); \
1792 command_t * top_cmd = new_cmd; \
1796 #define RC_FINAL(name, descr, handler) \
1797 register_command(cmd_ctx, top_cmd, name, handler, COMMAND_ANY, descr);
1799 #define RC_FINAL_BOOL(name, descr, var) \
1800 register_command(cmd_ctx, top_cmd, name, arm11_handle_bool_##var, COMMAND_ANY, descr);
1802 BOOL_WRAPPER(memwrite_burst
, "memory write burst mode")
1803 BOOL_WRAPPER(memwrite_error_fatal
, "fatal error mode for memory writes")
1804 BOOL_WRAPPER(memrw_no_increment
, "\"no increment\" mode for memory transfers")
1805 BOOL_WRAPPER(step_irq_enable
, "IRQs while stepping")
1807 int arm11_handle_vcr(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1811 arm11_vcr
= strtoul(args
[0], NULL
, 0);
1815 return ERROR_COMMAND_SYNTAX_ERROR
;
1818 LOG_INFO("VCR 0x%08" PRIx32
"", arm11_vcr
);
1822 const uint32_t arm11_coproc_instruction_limits
[] =
1824 15, /* coprocessor */
1829 0xFFFFFFFF, /* value */
1832 const char arm11_mrc_syntax
[] = "Syntax: mrc <jtag_target> <coprocessor> <opcode 1> <CRn> <CRm> <opcode 2>. All parameters are numbers only.";
1833 const char arm11_mcr_syntax
[] = "Syntax: mcr <jtag_target> <coprocessor> <opcode 1> <CRn> <CRm> <opcode 2> <32bit value to write>. All parameters are numbers only.";
1835 arm11_common_t
* arm11_find_target(const char * arg
)
1840 tap
= jtag_tap_by_string(arg
);
1845 for (t
= all_targets
; t
; t
= t
->next
)
1850 /* if (t->type == arm11_target) */
1851 if (0 == strcmp(target_get_name(t
), "arm11"))
1852 return t
->arch_info
;
1858 int arm11_handle_mrc_mcr(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
, bool read
)
1860 if (argc
!= (read
? 6 : 7))
1862 LOG_ERROR("Invalid number of arguments. %s", read
? arm11_mrc_syntax
: arm11_mcr_syntax
);
1866 arm11_common_t
* arm11
= arm11_find_target(args
[0]);
1870 LOG_ERROR("Parameter 1 is not a the JTAG chain position of an ARM11 device. %s",
1871 read
? arm11_mrc_syntax
: arm11_mcr_syntax
);
1876 if (arm11
->target
->state
!= TARGET_HALTED
)
1878 LOG_WARNING("target was not halted");
1879 return ERROR_TARGET_NOT_HALTED
;
1884 for (size_t i
= 0; i
< (read
? 5 : 6); i
++)
1886 values
[i
] = strtoul(args
[i
+ 1], NULL
, 0);
1888 if (values
[i
] > arm11_coproc_instruction_limits
[i
])
1890 LOG_ERROR("Parameter %ld out of bounds (%" PRId32
" max). %s",
1892 arm11_coproc_instruction_limits
[i
],
1893 read
? arm11_mrc_syntax
: arm11_mcr_syntax
);
1898 uint32_t instr
= 0xEE000010 |
1906 instr
|= 0x00100000;
1908 arm11_run_instr_data_prepare(arm11
);
1913 arm11_run_instr_data_from_core_via_r0(arm11
, instr
, &result
);
1915 LOG_INFO("MRC p%d, %d, R0, c%d, c%d, %d = 0x%08" PRIx32
" (%" PRId32
")",
1920 (int)(values
[4]), result
, result
);
1924 arm11_run_instr_data_to_core_via_r0(arm11
, instr
, values
[5]);
1926 LOG_INFO("MRC p%d, %d, R0 (#0x%08" PRIx32
"), c%d, c%d, %d",
1927 (int)(values
[0]), (int)(values
[1]),
1929 (int)(values
[2]), (int)(values
[3]), (int)(values
[4]));
1932 arm11_run_instr_data_finish(arm11
);
1938 int arm11_handle_mrc(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1940 return arm11_handle_mrc_mcr(cmd_ctx
, cmd
, args
, argc
, true);
1943 int arm11_handle_mcr(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1945 return arm11_handle_mrc_mcr(cmd_ctx
, cmd
, args
, argc
, false);
1948 int arm11_register_commands(struct command_context_s
*cmd_ctx
)
1952 command_t
* top_cmd
= NULL
;
1954 RC_TOP("arm11", "arm11 specific commands",
1956 RC_TOP("memwrite", "Control memory write transfer mode",
1958 RC_FINAL_BOOL("burst", "Enable/Disable non-standard but fast burst mode (default: enabled)",
1961 RC_FINAL_BOOL("error_fatal", "Terminate program if transfer error was found (default: enabled)",
1962 memwrite_error_fatal
)
1965 RC_FINAL_BOOL("no_increment", "Don't increment address on multi-read/-write (default: disabled)",
1968 RC_FINAL_BOOL("step_irq_enable", "Enable interrupts while stepping (default: disabled)",
1971 RC_FINAL("vcr", "Control (Interrupt) Vector Catch Register",
1974 RC_FINAL("mrc", "Read Coprocessor register",
1977 RC_FINAL("mcr", "Write Coprocessor register",