1 /***************************************************************************
2 * Copyright (C) 2008 digenius technology GmbH. *
5 * Copyright (C) 2008,2009 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 ***************************************************************************/
31 #include "arm_simulator.h"
32 #include "time_support.h"
33 #include "target_type.h"
37 #define _DEBUG_INSTRUCTION_EXECUTION_
41 #define FNC_INFO LOG_DEBUG("-")
47 #define FNC_INFO_NOTIMPLEMENTED do { LOG_DEBUG("NOT IMPLEMENTED"); /*exit(-1);*/ } while (0)
49 #define FNC_INFO_NOTIMPLEMENTED
52 static int arm11_on_enter_debug_state(arm11_common_t * arm11);
54 bool arm11_config_memwrite_burst = true;
55 bool arm11_config_memwrite_error_fatal = true;
56 uint32_t arm11_vcr = 0;
57 bool arm11_config_memrw_no_increment = false;
58 bool arm11_config_step_irq_enable = false;
59 bool arm11_config_hardware_step = false;
61 #define ARM11_HANDLER(x) \
64 target_type_t arm11_target =
69 ARM11_HANDLER(arch_state),
71 ARM11_HANDLER(target_request_data),
74 ARM11_HANDLER(resume),
77 ARM11_HANDLER(assert_reset),
78 ARM11_HANDLER(deassert_reset),
79 ARM11_HANDLER(soft_reset_halt),
81 ARM11_HANDLER(get_gdb_reg_list),
83 ARM11_HANDLER(read_memory),
84 ARM11_HANDLER(write_memory),
86 ARM11_HANDLER(bulk_write_memory),
88 ARM11_HANDLER(checksum_memory),
90 ARM11_HANDLER(add_breakpoint),
91 ARM11_HANDLER(remove_breakpoint),
92 ARM11_HANDLER(add_watchpoint),
93 ARM11_HANDLER(remove_watchpoint),
95 ARM11_HANDLER(run_algorithm),
97 ARM11_HANDLER(register_commands),
98 ARM11_HANDLER(target_create),
99 ARM11_HANDLER(init_target),
100 ARM11_HANDLER(examine),
104 int arm11_regs_arch_type = -1;
122 ARM11_REGISTER_SPSR_FIQ,
123 ARM11_REGISTER_SPSR_SVC,
124 ARM11_REGISTER_SPSR_ABT,
125 ARM11_REGISTER_SPSR_IRQ,
126 ARM11_REGISTER_SPSR_UND,
127 ARM11_REGISTER_SPSR_MON,
136 typedef struct arm11_reg_defs_s
141 enum arm11_regtype type;
144 /* update arm11_regcache_ids when changing this */
145 static const arm11_reg_defs_t arm11_reg_defs[] =
147 {"r0", 0, 0, ARM11_REGISTER_CORE},
148 {"r1", 1, 1, ARM11_REGISTER_CORE},
149 {"r2", 2, 2, ARM11_REGISTER_CORE},
150 {"r3", 3, 3, ARM11_REGISTER_CORE},
151 {"r4", 4, 4, ARM11_REGISTER_CORE},
152 {"r5", 5, 5, ARM11_REGISTER_CORE},
153 {"r6", 6, 6, ARM11_REGISTER_CORE},
154 {"r7", 7, 7, ARM11_REGISTER_CORE},
155 {"r8", 8, 8, ARM11_REGISTER_CORE},
156 {"r9", 9, 9, ARM11_REGISTER_CORE},
157 {"r10", 10, 10, ARM11_REGISTER_CORE},
158 {"r11", 11, 11, ARM11_REGISTER_CORE},
159 {"r12", 12, 12, ARM11_REGISTER_CORE},
160 {"sp", 13, 13, ARM11_REGISTER_CORE},
161 {"lr", 14, 14, ARM11_REGISTER_CORE},
162 {"pc", 15, 15, ARM11_REGISTER_CORE},
164 #if ARM11_REGCACHE_FREGS
165 {"f0", 0, 16, ARM11_REGISTER_FX},
166 {"f1", 1, 17, ARM11_REGISTER_FX},
167 {"f2", 2, 18, ARM11_REGISTER_FX},
168 {"f3", 3, 19, ARM11_REGISTER_FX},
169 {"f4", 4, 20, ARM11_REGISTER_FX},
170 {"f5", 5, 21, ARM11_REGISTER_FX},
171 {"f6", 6, 22, ARM11_REGISTER_FX},
172 {"f7", 7, 23, ARM11_REGISTER_FX},
173 {"fps", 0, 24, ARM11_REGISTER_FPS},
176 {"cpsr", 0, 25, ARM11_REGISTER_CPSR},
178 #if ARM11_REGCACHE_MODEREGS
179 {"r8_fiq", 8, -1, ARM11_REGISTER_FIQ},
180 {"r9_fiq", 9, -1, ARM11_REGISTER_FIQ},
181 {"r10_fiq", 10, -1, ARM11_REGISTER_FIQ},
182 {"r11_fiq", 11, -1, ARM11_REGISTER_FIQ},
183 {"r12_fiq", 12, -1, ARM11_REGISTER_FIQ},
184 {"r13_fiq", 13, -1, ARM11_REGISTER_FIQ},
185 {"r14_fiq", 14, -1, ARM11_REGISTER_FIQ},
186 {"spsr_fiq", 0, -1, ARM11_REGISTER_SPSR_FIQ},
188 {"r13_svc", 13, -1, ARM11_REGISTER_SVC},
189 {"r14_svc", 14, -1, ARM11_REGISTER_SVC},
190 {"spsr_svc", 0, -1, ARM11_REGISTER_SPSR_SVC},
192 {"r13_abt", 13, -1, ARM11_REGISTER_ABT},
193 {"r14_abt", 14, -1, ARM11_REGISTER_ABT},
194 {"spsr_abt", 0, -1, ARM11_REGISTER_SPSR_ABT},
196 {"r13_irq", 13, -1, ARM11_REGISTER_IRQ},
197 {"r14_irq", 14, -1, ARM11_REGISTER_IRQ},
198 {"spsr_irq", 0, -1, ARM11_REGISTER_SPSR_IRQ},
200 {"r13_und", 13, -1, ARM11_REGISTER_UND},
201 {"r14_und", 14, -1, ARM11_REGISTER_UND},
202 {"spsr_und", 0, -1, ARM11_REGISTER_SPSR_UND},
205 {"r13_mon", 13, -1, ARM11_REGISTER_MON},
206 {"r14_mon", 14, -1, ARM11_REGISTER_MON},
207 {"spsr_mon", 0, -1, ARM11_REGISTER_SPSR_MON},
210 /* Debug Registers */
211 {"dscr", 0, -1, ARM11_REGISTER_DSCR},
212 {"wdtr", 0, -1, ARM11_REGISTER_WDTR},
213 {"rdtr", 0, -1, ARM11_REGISTER_RDTR},
216 enum arm11_regcache_ids
219 ARM11_RC_RX = ARM11_RC_R0,
234 ARM11_RC_SP = ARM11_RC_R13,
236 ARM11_RC_LR = ARM11_RC_R14,
238 ARM11_RC_PC = ARM11_RC_R15,
240 #if ARM11_REGCACHE_FREGS
242 ARM11_RC_FX = ARM11_RC_F0,
255 #if ARM11_REGCACHE_MODEREGS
293 #define ARM11_GDB_REGISTER_COUNT 26
295 uint8_t arm11_gdb_dummy_fp_value[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
297 reg_t arm11_gdb_dummy_fp_reg =
299 "GDB dummy floating-point register", arm11_gdb_dummy_fp_value, 0, 1, 96, NULL, 0, NULL, 0
302 uint8_t arm11_gdb_dummy_fps_value[] = {0, 0, 0, 0};
304 reg_t arm11_gdb_dummy_fps_reg =
306 "GDB dummy floating-point status register", arm11_gdb_dummy_fps_value, 0, 1, 32, NULL, 0, NULL, 0
311 /** Check and if necessary take control of the system
313 * \param arm11 Target state variable.
314 * \param dscr If the current DSCR content is
315 * available a pointer to a word holding the
316 * DSCR can be passed. Otherwise use NULL.
318 int arm11_check_init(arm11_common_t * arm11, uint32_t * dscr)
322 uint32_t dscr_local_tmp_copy;
326 dscr = &dscr_local_tmp_copy;
328 CHECK_RETVAL(arm11_read_DSCR(arm11, dscr));
331 if (!(*dscr & ARM11_DSCR_MODE_SELECT))
333 LOG_DEBUG("Bringing target into debug mode");
335 *dscr |= ARM11_DSCR_MODE_SELECT; /* Halt debug-mode */
336 arm11_write_DSCR(arm11, *dscr);
338 /* add further reset initialization here */
340 arm11->simulate_reset_on_next_halt = true;
342 if (*dscr & ARM11_DSCR_CORE_HALTED)
344 /** \todo TODO: this needs further scrutiny because
345 * arm11_on_enter_debug_state() never gets properly called.
346 * As a result we don't read the actual register states from
350 arm11->target->state = TARGET_HALTED;
351 arm11->target->debug_reason = arm11_get_DSCR_debug_reason(*dscr);
355 arm11->target->state = TARGET_RUNNING;
356 arm11->target->debug_reason = DBG_REASON_NOTHALTED;
359 arm11_sc7_clear_vbw(arm11);
368 (arm11->reg_values[ARM11_RC_##x])
370 /** Save processor state.
372 * This is called when the HALT instruction has succeeded
373 * or on other occasions that stop the processor.
376 static int arm11_on_enter_debug_state(arm11_common_t * arm11)
381 for (size_t i = 0; i < asizeof(arm11->reg_values); i++)
383 arm11->reg_list[i].valid = 1;
384 arm11->reg_list[i].dirty = 0;
388 CHECK_RETVAL(arm11_read_DSCR(arm11, &R(DSCR)));
392 if (R(DSCR) & ARM11_DSCR_WDTR_FULL)
394 arm11_add_debug_SCAN_N(arm11, 0x05, ARM11_TAP_DEFAULT);
396 arm11_add_IR(arm11, ARM11_INTEST, ARM11_TAP_DEFAULT);
398 scan_field_t chain5_fields[3];
400 arm11_setup_field(arm11, 32, NULL, &R(WDTR), chain5_fields + 0);
401 arm11_setup_field(arm11, 1, NULL, NULL, chain5_fields + 1);
402 arm11_setup_field(arm11, 1, NULL, NULL, chain5_fields + 2);
404 arm11_add_dr_scan_vc(asizeof(chain5_fields), chain5_fields, TAP_DRPAUSE);
408 arm11->reg_list[ARM11_RC_WDTR].valid = 0;
412 /* DSCR: set ARM11_DSCR_EXECUTE_ARM_INSTRUCTION_ENABLE */
413 /* ARM1176 spec says this is needed only for wDTR/rDTR's "ITR mode", but not to issue ITRs
414 ARM1136 seems to require this to issue ITR's as well */
416 uint32_t new_dscr = R(DSCR) | ARM11_DSCR_EXECUTE_ARM_INSTRUCTION_ENABLE;
418 /* this executes JTAG queue: */
420 arm11_write_DSCR(arm11, new_dscr);
424 Before executing any instruction in debug state you have to drain the write buffer.
425 This ensures that no imprecise Data Aborts can return at a later point:*/
427 /** \todo TODO: Test drain write buffer. */
432 /* MRC p14,0,R0,c5,c10,0 */
433 // arm11_run_instr_no_data1(arm11, /*0xee150e1a*/0xe320f000);
435 /* mcr 15, 0, r0, cr7, cr10, {4} */
436 arm11_run_instr_no_data1(arm11, 0xee070f9a);
438 uint32_t dscr = arm11_read_DSCR(arm11);
440 LOG_DEBUG("DRAIN, DSCR %08x", dscr);
442 if (dscr & ARM11_DSCR_STICKY_IMPRECISE_DATA_ABORT)
444 arm11_run_instr_no_data1(arm11, 0xe320f000);
446 dscr = arm11_read_DSCR(arm11);
448 LOG_DEBUG("DRAIN, DSCR %08x (DONE)", dscr);
455 retval = arm11_run_instr_data_prepare(arm11);
456 if (retval != ERROR_OK)
461 /** \todo TODO: handle other mode registers */
463 for (size_t i = 0; i < 15; i++)
465 /* MCR p14,0,R?,c0,c5,0 */
466 retval = arm11_run_instr_data_from_core(arm11, 0xEE000E15 | (i << 12), &R(RX + i), 1);
467 if (retval != ERROR_OK)
473 /* check rDTRfull in DSCR */
475 if (R(DSCR) & ARM11_DSCR_RDTR_FULL)
477 /* MRC p14,0,R0,c0,c5,0 (move rDTR -> r0 (-> wDTR -> local var)) */
478 retval = arm11_run_instr_data_from_core_via_r0(arm11, 0xEE100E15, &R(RDTR));
479 if (retval != ERROR_OK)
484 arm11->reg_list[ARM11_RC_RDTR].valid = 0;
489 /* MRS r0,CPSR (move CPSR -> r0 (-> wDTR -> local var)) */
490 retval = arm11_run_instr_data_from_core_via_r0(arm11, 0xE10F0000, &R(CPSR));
491 if (retval != ERROR_OK)
496 /* MOV R0,PC (move PC -> r0 (-> wDTR -> local var)) */
497 retval = arm11_run_instr_data_from_core_via_r0(arm11, 0xE1A0000F, &R(PC));
498 if (retval != ERROR_OK)
501 /* adjust PC depending on ARM state */
503 if (R(CPSR) & ARM11_CPSR_J) /* Java state */
505 arm11->reg_values[ARM11_RC_PC] -= 0;
507 else if (R(CPSR) & ARM11_CPSR_T) /* Thumb state */
509 arm11->reg_values[ARM11_RC_PC] -= 4;
513 arm11->reg_values[ARM11_RC_PC] -= 8;
516 if (arm11->simulate_reset_on_next_halt)
518 arm11->simulate_reset_on_next_halt = false;
520 LOG_DEBUG("Reset c1 Control Register");
522 /* Write 0 (reset value) to Control register 0 to disable MMU/Cache etc. */
524 /* MCR p15,0,R0,c1,c0,0 */
525 retval = arm11_run_instr_data_to_core_via_r0(arm11, 0xee010f10, 0);
526 if (retval != ERROR_OK)
531 retval = arm11_run_instr_data_finish(arm11);
532 if (retval != ERROR_OK)
535 arm11_dump_reg_changes(arm11);
540 void arm11_dump_reg_changes(arm11_common_t * arm11)
543 if (!(debug_level >= LOG_LVL_DEBUG))
548 for (size_t i = 0; i < ARM11_REGCACHE_COUNT; i++)
550 if (!arm11->reg_list[i].valid)
552 if (arm11->reg_history[i].valid)
553 LOG_DEBUG("%8s INVALID (%08" PRIx32 ")", arm11_reg_defs[i].name, arm11->reg_history[i].value);
557 if (arm11->reg_history[i].valid)
559 if (arm11->reg_history[i].value != arm11->reg_values[i])
560 LOG_DEBUG("%8s %08" PRIx32 " (%08" PRIx32 ")", arm11_reg_defs[i].name, arm11->reg_values[i], arm11->reg_history[i].value);
564 LOG_DEBUG("%8s %08" PRIx32 " (INVALID)", arm11_reg_defs[i].name, arm11->reg_values[i]);
570 /** Restore processor state
572 * This is called in preparation for the RESTART function.
575 int arm11_leave_debug_state(arm11_common_t * arm11)
580 retval = arm11_run_instr_data_prepare(arm11);
581 if (retval != ERROR_OK)
584 /** \todo TODO: handle other mode registers */
586 /* restore R1 - R14 */
588 for (size_t i = 1; i < 15; i++)
590 if (!arm11->reg_list[ARM11_RC_RX + i].dirty)
593 /* MRC p14,0,r?,c0,c5,0 */
594 arm11_run_instr_data_to_core1(arm11, 0xee100e15 | (i << 12), R(RX + i));
596 // LOG_DEBUG("RESTORE R" ZU " %08x", i, R(RX + i));
599 retval = arm11_run_instr_data_finish(arm11);
600 if (retval != ERROR_OK)
603 /* spec says clear wDTR and rDTR; we assume they are clear as
604 otherwise our programming would be sloppy */
608 CHECK_RETVAL(arm11_read_DSCR(arm11, &DSCR));
610 if (DSCR & (ARM11_DSCR_RDTR_FULL | ARM11_DSCR_WDTR_FULL))
612 LOG_ERROR("wDTR/rDTR inconsistent (DSCR %08" PRIx32 ")", DSCR);
616 retval = arm11_run_instr_data_prepare(arm11);
617 if (retval != ERROR_OK)
620 /* restore original wDTR */
622 if ((R(DSCR) & ARM11_DSCR_WDTR_FULL) || arm11->reg_list[ARM11_RC_WDTR].dirty)
624 /* MCR p14,0,R0,c0,c5,0 */
625 retval = arm11_run_instr_data_to_core_via_r0(arm11, 0xee000e15, R(WDTR));
626 if (retval != ERROR_OK)
633 retval = arm11_run_instr_data_to_core_via_r0(arm11, 0xe129f000, R(CPSR));
634 if (retval != ERROR_OK)
641 retval = arm11_run_instr_data_to_core_via_r0(arm11, 0xe1a0f000, R(PC));
642 if (retval != ERROR_OK)
648 /* MRC p14,0,r0,c0,c5,0 */
649 arm11_run_instr_data_to_core1(arm11, 0xee100e15, R(R0));
651 retval = arm11_run_instr_data_finish(arm11);
652 if (retval != ERROR_OK)
657 arm11_write_DSCR(arm11, R(DSCR));
661 if (R(DSCR) & ARM11_DSCR_RDTR_FULL || arm11->reg_list[ARM11_RC_RDTR].dirty)
663 arm11_add_debug_SCAN_N(arm11, 0x05, ARM11_TAP_DEFAULT);
665 arm11_add_IR(arm11, ARM11_EXTEST, ARM11_TAP_DEFAULT);
667 scan_field_t chain5_fields[3];
669 uint8_t Ready = 0; /* ignored */
670 uint8_t Valid = 0; /* ignored */
672 arm11_setup_field(arm11, 32, &R(RDTR), NULL, chain5_fields + 0);
673 arm11_setup_field(arm11, 1, &Ready, NULL, chain5_fields + 1);
674 arm11_setup_field(arm11, 1, &Valid, NULL, chain5_fields + 2);
676 arm11_add_dr_scan_vc(asizeof(chain5_fields), chain5_fields, TAP_DRPAUSE);
679 arm11_record_register_history(arm11);
684 void arm11_record_register_history(arm11_common_t * arm11)
686 for (size_t i = 0; i < ARM11_REGCACHE_COUNT; i++)
688 arm11->reg_history[i].value = arm11->reg_values[i];
689 arm11->reg_history[i].valid = arm11->reg_list[i].valid;
691 arm11->reg_list[i].valid = 0;
692 arm11->reg_list[i].dirty = 0;
697 /* poll current target status */
698 int arm11_poll(struct target_s *target)
703 arm11_common_t * arm11 = target->arch_info;
705 if (arm11->trst_active)
710 CHECK_RETVAL(arm11_read_DSCR(arm11, &dscr));
712 LOG_DEBUG("DSCR %08" PRIx32 "", dscr);
714 CHECK_RETVAL(arm11_check_init(arm11, &dscr));
716 if (dscr & ARM11_DSCR_CORE_HALTED)
718 if (target->state != TARGET_HALTED)
720 enum target_state old_state = target->state;
722 LOG_DEBUG("enter TARGET_HALTED");
723 target->state = TARGET_HALTED;
724 target->debug_reason = arm11_get_DSCR_debug_reason(dscr);
725 retval = arm11_on_enter_debug_state(arm11);
726 if (retval != ERROR_OK)
729 target_call_event_callbacks(target,
730 old_state == TARGET_DEBUG_RUNNING ? TARGET_EVENT_DEBUG_HALTED : TARGET_EVENT_HALTED);
735 if (target->state != TARGET_RUNNING && target->state != TARGET_DEBUG_RUNNING)
737 LOG_DEBUG("enter TARGET_RUNNING");
738 target->state = TARGET_RUNNING;
739 target->debug_reason = DBG_REASON_NOTHALTED;
745 /* architecture specific status reply */
746 int arm11_arch_state(struct target_s *target)
748 arm11_common_t * arm11 = target->arch_info;
750 LOG_USER("target halted due to %s\ncpsr: 0x%8.8" PRIx32 " pc: 0x%8.8" PRIx32 "",
751 Jim_Nvp_value2name_simple(nvp_target_debug_reason, target->debug_reason)->name,
758 /* target request support */
759 int arm11_target_request_data(struct target_s *target, uint32_t size, uint8_t *buffer)
761 FNC_INFO_NOTIMPLEMENTED;
766 /* target execution control */
767 int arm11_halt(struct target_s *target)
771 arm11_common_t * arm11 = target->arch_info;
773 LOG_DEBUG("target->state: %s",
774 target_state_name(target));
776 if (target->state == TARGET_UNKNOWN)
778 arm11->simulate_reset_on_next_halt = true;
781 if (target->state == TARGET_HALTED)
783 LOG_DEBUG("target was already halted");
787 if (arm11->trst_active)
789 arm11->halt_requested = true;
793 arm11_add_IR(arm11, ARM11_HALT, TAP_IDLE);
795 CHECK_RETVAL(jtag_execute_queue());
802 CHECK_RETVAL(arm11_read_DSCR(arm11, &dscr));
804 if (dscr & ARM11_DSCR_CORE_HALTED)
815 if ((timeval_ms()-then) > 1000)
817 LOG_WARNING("Timeout (1000ms) waiting for instructions to complete");
824 arm11_on_enter_debug_state(arm11);
826 enum target_state old_state = target->state;
828 target->state = TARGET_HALTED;
829 target->debug_reason = arm11_get_DSCR_debug_reason(dscr);
832 target_call_event_callbacks(target,
833 old_state == TARGET_DEBUG_RUNNING ? TARGET_EVENT_DEBUG_HALTED : TARGET_EVENT_HALTED));
838 int arm11_resume(struct target_s *target, int current, uint32_t address, int handle_breakpoints, int debug_execution)
842 // LOG_DEBUG("current %d address %08x handle_breakpoints %d debug_execution %d",
843 // current, address, handle_breakpoints, debug_execution);
845 arm11_common_t * arm11 = target->arch_info;
847 LOG_DEBUG("target->state: %s",
848 target_state_name(target));
851 if (target->state != TARGET_HALTED)
853 LOG_ERROR("Target not halted");
854 return ERROR_TARGET_NOT_HALTED;
860 LOG_DEBUG("RESUME PC %08" PRIx32 "%s", R(PC), !current ? "!" : "");
862 /* clear breakpoints/watchpoints and VCR*/
863 arm11_sc7_clear_vbw(arm11);
865 /* Set up breakpoints */
866 if (!debug_execution)
868 /* check if one matches PC and step over it if necessary */
872 for (bp = target->breakpoints; bp; bp = bp->next)
874 if (bp->address == R(PC))
876 LOG_DEBUG("must step over %08" PRIx32 "", bp->address);
877 arm11_step(target, 1, 0, 0);
882 /* set all breakpoints */
886 for (bp = target->breakpoints; bp; bp = bp->next)
888 arm11_sc7_action_t brp[2];
891 brp[0].address = ARM11_SC7_BVR0 + brp_num;
892 brp[0].value = bp->address;
894 brp[1].address = ARM11_SC7_BCR0 + brp_num;
895 brp[1].value = 0x1 | (3 << 1) | (0x0F << 5) | (0 << 14) | (0 << 16) | (0 << 20) | (0 << 21);
897 arm11_sc7_run(arm11, brp, asizeof(brp));
899 LOG_DEBUG("Add BP " ZU " at %08" PRIx32 "", brp_num, bp->address);
904 arm11_sc7_set_vcr(arm11, arm11_vcr);
907 arm11_leave_debug_state(arm11);
909 arm11_add_IR(arm11, ARM11_RESTART, TAP_IDLE);
911 CHECK_RETVAL(jtag_execute_queue());
918 CHECK_RETVAL(arm11_read_DSCR(arm11, &dscr));
920 LOG_DEBUG("DSCR %08" PRIx32 "", dscr);
922 if (dscr & ARM11_DSCR_CORE_RESTARTED)
933 if ((timeval_ms()-then) > 1000)
935 LOG_WARNING("Timeout (1000ms) waiting for instructions to complete");
942 if (!debug_execution)
944 target->state = TARGET_RUNNING;
945 target->debug_reason = DBG_REASON_NOTHALTED;
947 CHECK_RETVAL(target_call_event_callbacks(target, TARGET_EVENT_RESUMED));
951 target->state = TARGET_DEBUG_RUNNING;
952 target->debug_reason = DBG_REASON_NOTHALTED;
954 CHECK_RETVAL(target_call_event_callbacks(target, TARGET_EVENT_RESUMED));
961 static int armv4_5_to_arm11(int reg)
968 return ARM11_RC_CPSR;
970 /* FIX!!! handle thumb better! */
971 return ARM11_RC_CPSR;
973 LOG_ERROR("BUG: register translation from armv4_5 to arm11 not supported %d", reg);
979 static uint32_t arm11_sim_get_reg(struct arm_sim_interface *sim, int reg)
981 arm11_common_t * arm11 = (arm11_common_t *)sim->user_data;
983 reg=armv4_5_to_arm11(reg);
985 return buf_get_u32(arm11->reg_list[reg].value, 0, 32);
988 static void arm11_sim_set_reg(struct arm_sim_interface *sim, int reg, uint32_t value)
990 arm11_common_t * arm11 = (arm11_common_t *)sim->user_data;
992 reg=armv4_5_to_arm11(reg);
994 buf_set_u32(arm11->reg_list[reg].value, 0, 32, value);
997 static uint32_t arm11_sim_get_cpsr(struct arm_sim_interface *sim, int pos, int bits)
999 arm11_common_t * arm11 = (arm11_common_t *)sim->user_data;
1001 return buf_get_u32(arm11->reg_list[ARM11_RC_CPSR].value, pos, bits);
1004 static enum armv4_5_state arm11_sim_get_state(struct arm_sim_interface *sim)
1006 // arm11_common_t * arm11 = (arm11_common_t *)sim->user_data;
1008 /* FIX!!!! we should implement thumb for arm11 */
1009 return ARMV4_5_STATE_ARM;
1012 static void arm11_sim_set_state(struct arm_sim_interface *sim, enum armv4_5_state mode)
1014 // arm11_common_t * arm11 = (arm11_common_t *)sim->user_data;
1016 /* FIX!!!! we should implement thumb for arm11 */
1017 LOG_ERROR("Not implemetned!");
1021 static enum armv4_5_mode arm11_sim_get_mode(struct arm_sim_interface *sim)
1023 //arm11_common_t * arm11 = (arm11_common_t *)sim->user_data;
1025 /* FIX!!!! we should implement something that returns the current mode here!!! */
1026 return ARMV4_5_MODE_USR;
1029 static int arm11_simulate_step(target_t *target, uint32_t *dry_run_pc)
1031 struct arm_sim_interface sim;
1033 sim.user_data=target->arch_info;
1034 sim.get_reg=&arm11_sim_get_reg;
1035 sim.set_reg=&arm11_sim_set_reg;
1036 sim.get_reg_mode=&arm11_sim_get_reg;
1037 sim.set_reg_mode=&arm11_sim_set_reg;
1038 sim.get_cpsr=&arm11_sim_get_cpsr;
1039 sim.get_mode=&arm11_sim_get_mode;
1040 sim.get_state=&arm11_sim_get_state;
1041 sim.set_state=&arm11_sim_set_state;
1043 return arm_simulate_step_core(target, dry_run_pc, &sim);
1047 int arm11_step(struct target_s *target, int current, uint32_t address, int handle_breakpoints)
1051 LOG_DEBUG("target->state: %s",
1052 target_state_name(target));
1054 if (target->state != TARGET_HALTED)
1056 LOG_WARNING("target was not halted");
1057 return ERROR_TARGET_NOT_HALTED;
1060 arm11_common_t * arm11 = target->arch_info;
1065 LOG_DEBUG("STEP PC %08" PRIx32 "%s", R(PC), !current ? "!" : "");
1068 /** \todo TODO: Thumb not supported here */
1070 uint32_t next_instruction;
1072 CHECK_RETVAL(arm11_read_memory_word(arm11, R(PC), &next_instruction));
1074 /* skip over BKPT */
1075 if ((next_instruction & 0xFFF00070) == 0xe1200070)
1078 arm11->reg_list[ARM11_RC_PC].valid = 1;
1079 arm11->reg_list[ARM11_RC_PC].dirty = 0;
1080 LOG_DEBUG("Skipping BKPT");
1082 /* skip over Wait for interrupt / Standby */
1083 /* mcr 15, 0, r?, cr7, cr0, {4} */
1084 else if ((next_instruction & 0xFFFF0FFF) == 0xee070f90)
1087 arm11->reg_list[ARM11_RC_PC].valid = 1;
1088 arm11->reg_list[ARM11_RC_PC].dirty = 0;
1089 LOG_DEBUG("Skipping WFI");
1091 /* ignore B to self */
1092 else if ((next_instruction & 0xFEFFFFFF) == 0xeafffffe)
1094 LOG_DEBUG("Not stepping jump to self");
1098 /** \todo TODO: check if break-/watchpoints make any sense at all in combination
1101 /** \todo TODO: check if disabling IRQs might be a good idea here. Alternatively
1102 * the VCR might be something worth looking into. */
1105 /* Set up breakpoint for stepping */
1107 arm11_sc7_action_t brp[2];
1110 brp[0].address = ARM11_SC7_BVR0;
1112 brp[1].address = ARM11_SC7_BCR0;
1114 if (arm11_config_hardware_step)
1116 /* hardware single stepping be used if possible or is it better to
1117 * always use the same code path? Hardware single stepping is not supported
1120 brp[0].value = R(PC);
1121 brp[1].value = 0x1 | (3 << 1) | (0x0F << 5) | (0 << 14) | (0 << 16) | (0 << 20) | (2 << 21);
1124 /* sets a breakpoint on the next PC(calculated by simulation),
1128 retval = arm11_simulate_step(target, &next_pc);
1129 if (retval != ERROR_OK)
1132 brp[0].value = next_pc;
1133 brp[1].value = 0x1 | (3 << 1) | (0x0F << 5) | (0 << 14) | (0 << 16) | (0 << 20) | (0 << 21);
1136 CHECK_RETVAL(arm11_sc7_run(arm11, brp, asizeof(brp)));
1141 if (arm11_config_step_irq_enable)
1142 R(DSCR) &= ~ARM11_DSCR_INTERRUPTS_DISABLE; /* should be redundant */
1144 R(DSCR) |= ARM11_DSCR_INTERRUPTS_DISABLE;
1147 CHECK_RETVAL(arm11_leave_debug_state(arm11));
1149 arm11_add_IR(arm11, ARM11_RESTART, TAP_IDLE);
1151 CHECK_RETVAL(jtag_execute_queue());
1159 CHECK_RETVAL(arm11_read_DSCR(arm11, &dscr));
1161 LOG_DEBUG("DSCR %08" PRIx32 "e", dscr);
1163 if ((dscr & (ARM11_DSCR_CORE_RESTARTED | ARM11_DSCR_CORE_HALTED)) ==
1164 (ARM11_DSCR_CORE_RESTARTED | ARM11_DSCR_CORE_HALTED))
1170 then = timeval_ms();
1174 if ((timeval_ms()-then) > 1000)
1176 LOG_WARNING("Timeout (1000ms) waiting for instructions to complete");
1183 /* clear breakpoint */
1184 arm11_sc7_clear_vbw(arm11);
1187 CHECK_RETVAL(arm11_on_enter_debug_state(arm11));
1189 /* restore default state */
1190 R(DSCR) &= ~ARM11_DSCR_INTERRUPTS_DISABLE;
1194 // target->state = TARGET_HALTED;
1195 target->debug_reason = DBG_REASON_SINGLESTEP;
1197 CHECK_RETVAL(target_call_event_callbacks(target, TARGET_EVENT_HALTED));
1202 /* target reset control */
1203 int arm11_assert_reset(struct target_s *target)
1208 /* assert reset lines */
1209 /* resets only the DBGTAP, not the ARM */
1211 jtag_add_reset(1, 0);
1212 jtag_add_sleep(5000);
1214 arm11_common_t * arm11 = target->arch_info;
1215 arm11->trst_active = true;
1218 if (target->reset_halt)
1220 CHECK_RETVAL(target_halt(target));
1226 int arm11_deassert_reset(struct target_s *target)
1231 LOG_DEBUG("target->state: %s",
1232 target_state_name(target));
1235 /* deassert reset lines */
1236 jtag_add_reset(0, 0);
1238 arm11_common_t * arm11 = target->arch_info;
1239 arm11->trst_active = false;
1241 if (arm11->halt_requested)
1242 return arm11_halt(target);
1248 int arm11_soft_reset_halt(struct target_s *target)
1250 FNC_INFO_NOTIMPLEMENTED;
1255 /* target register access for gdb */
1256 int arm11_get_gdb_reg_list(struct target_s *target, struct reg_s **reg_list[], int *reg_list_size)
1260 arm11_common_t * arm11 = target->arch_info;
1262 *reg_list_size = ARM11_GDB_REGISTER_COUNT;
1263 *reg_list = malloc(sizeof(reg_t*) * ARM11_GDB_REGISTER_COUNT);
1265 for (size_t i = 16; i < 24; i++)
1267 (*reg_list)[i] = &arm11_gdb_dummy_fp_reg;
1270 (*reg_list)[24] = &arm11_gdb_dummy_fps_reg;
1272 for (size_t i = 0; i < ARM11_REGCACHE_COUNT; i++)
1274 if (arm11_reg_defs[i].gdb_num == -1)
1277 (*reg_list)[arm11_reg_defs[i].gdb_num] = arm11->reg_list + i;
1283 /* target memory access
1284 * size: 1 = byte (8bit), 2 = half-word (16bit), 4 = word (32bit)
1285 * count: number of items of <size>
1287 int arm11_read_memory(struct target_s *target, uint32_t address, uint32_t size, uint32_t count, uint8_t *buffer)
1289 /** \todo TODO: check if buffer cast to uint32_t* and uint16_t* might cause alignment problems */
1294 if (target->state != TARGET_HALTED)
1296 LOG_WARNING("target was not halted");
1297 return ERROR_TARGET_NOT_HALTED;
1300 LOG_DEBUG("ADDR %08" PRIx32 " SIZE %08" PRIx32 " COUNT %08" PRIx32 "", address, size, count);
1302 arm11_common_t * arm11 = target->arch_info;
1304 retval = arm11_run_instr_data_prepare(arm11);
1305 if (retval != ERROR_OK)
1308 /* MRC p14,0,r0,c0,c5,0 */
1309 retval = arm11_run_instr_data_to_core1(arm11, 0xee100e15, address);
1310 if (retval != ERROR_OK)
1316 /** \todo TODO: check if dirty is the right choice to force a rewrite on arm11_resume() */
1317 arm11->reg_list[ARM11_RC_R1].dirty = 1;
1319 for (size_t i = 0; i < count; i++)
1321 /* ldrb r1, [r0], #1 */
1323 arm11_run_instr_no_data1(arm11,
1324 !arm11_config_memrw_no_increment ? 0xe4d01001 : 0xe5d01000);
1327 /* MCR p14,0,R1,c0,c5,0 */
1328 arm11_run_instr_data_from_core(arm11, 0xEE001E15, &res, 1);
1337 arm11->reg_list[ARM11_RC_R1].dirty = 1;
1339 for (size_t i = 0; i < count; i++)
1341 /* ldrh r1, [r0], #2 */
1342 arm11_run_instr_no_data1(arm11,
1343 !arm11_config_memrw_no_increment ? 0xe0d010b2 : 0xe1d010b0);
1347 /* MCR p14,0,R1,c0,c5,0 */
1348 arm11_run_instr_data_from_core(arm11, 0xEE001E15, &res, 1);
1350 uint16_t svalue = res;
1351 memcpy(buffer + i * sizeof(uint16_t), &svalue, sizeof(uint16_t));
1359 uint32_t instr = !arm11_config_memrw_no_increment ? 0xecb05e01 : 0xed905e00;
1360 /** \todo TODO: buffer cast to uint32_t* causes alignment warnings */
1361 uint32_t *words = (uint32_t *)buffer;
1363 /* LDC p14,c5,[R0],#4 */
1364 /* LDC p14,c5,[R0] */
1365 arm11_run_instr_data_from_core(arm11, instr, words, count);
1370 return arm11_run_instr_data_finish(arm11);
1373 int arm11_write_memory(struct target_s *target, uint32_t address, uint32_t size, uint32_t count, uint8_t *buffer)
1378 if (target->state != TARGET_HALTED)
1380 LOG_WARNING("target was not halted");
1381 return ERROR_TARGET_NOT_HALTED;
1384 LOG_DEBUG("ADDR %08" PRIx32 " SIZE %08" PRIx32 " COUNT %08" PRIx32 "", address, size, count);
1386 arm11_common_t * arm11 = target->arch_info;
1388 arm11_run_instr_data_prepare(arm11);
1390 /* MRC p14,0,r0,c0,c5,0 */
1391 retval = arm11_run_instr_data_to_core1(arm11, 0xee100e15, address);
1392 if (retval != ERROR_OK)
1399 arm11->reg_list[ARM11_RC_R1].dirty = 1;
1401 for (size_t i = 0; i < count; i++)
1403 /* MRC p14,0,r1,c0,c5,0 */
1404 retval = arm11_run_instr_data_to_core1(arm11, 0xee101e15, *buffer++);
1405 if (retval != ERROR_OK)
1408 /* strb r1, [r0], #1 */
1410 retval = arm11_run_instr_no_data1(arm11,
1411 !arm11_config_memrw_no_increment ? 0xe4c01001 : 0xe5c01000);
1412 if (retval != ERROR_OK)
1421 arm11->reg_list[ARM11_RC_R1].dirty = 1;
1423 for (size_t i = 0; i < count; i++)
1426 memcpy(&value, buffer + i * sizeof(uint16_t), sizeof(uint16_t));
1428 /* MRC p14,0,r1,c0,c5,0 */
1429 retval = arm11_run_instr_data_to_core1(arm11, 0xee101e15, value);
1430 if (retval != ERROR_OK)
1433 /* strh r1, [r0], #2 */
1435 retval = arm11_run_instr_no_data1(arm11,
1436 !arm11_config_memrw_no_increment ? 0xe0c010b2 : 0xe1c010b0);
1437 if (retval != ERROR_OK)
1445 uint32_t instr = !arm11_config_memrw_no_increment ? 0xeca05e01 : 0xed805e00;
1447 /** \todo TODO: buffer cast to uint32_t* causes alignment warnings */
1448 uint32_t *words = (uint32_t*)buffer;
1450 if (!arm11_config_memwrite_burst)
1452 /* STC p14,c5,[R0],#4 */
1453 /* STC p14,c5,[R0]*/
1454 retval = arm11_run_instr_data_to_core(arm11, instr, words, count);
1455 if (retval != ERROR_OK)
1460 /* STC p14,c5,[R0],#4 */
1461 /* STC p14,c5,[R0]*/
1462 retval = arm11_run_instr_data_to_core_noack(arm11, instr, words, count);
1463 if (retval != ERROR_OK)
1471 /* r0 verification */
1472 if (!arm11_config_memrw_no_increment)
1476 /* MCR p14,0,R0,c0,c5,0 */
1477 retval = arm11_run_instr_data_from_core(arm11, 0xEE000E15, &r0, 1);
1478 if (retval != ERROR_OK)
1481 if (address + size * count != r0)
1483 LOG_ERROR("Data transfer failed. Expected end "
1484 "address 0x%08x, got 0x%08x",
1485 (unsigned) (address + size * count),
1488 if (arm11_config_memwrite_burst)
1489 LOG_ERROR("use 'arm11 memwrite burst disable' to disable fast burst mode");
1491 if (arm11_config_memwrite_error_fatal)
1496 return arm11_run_instr_data_finish(arm11);
1500 /* write target memory in multiples of 4 byte, optimized for writing large quantities of data */
1501 int arm11_bulk_write_memory(struct target_s *target, uint32_t address, uint32_t count, uint8_t *buffer)
1505 if (target->state != TARGET_HALTED)
1507 LOG_WARNING("target was not halted");
1508 return ERROR_TARGET_NOT_HALTED;
1511 return arm11_write_memory(target, address, 4, count, buffer);
1514 /* here we have nothing target specific to contribute, so we fail and then the
1515 * fallback code will read data from the target and calculate the CRC on the
1518 int arm11_checksum_memory(struct target_s *target, uint32_t address, uint32_t count, uint32_t* checksum)
1523 /* target break-/watchpoint control
1524 * rw: 0 = write, 1 = read, 2 = access
1526 int arm11_add_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
1530 arm11_common_t * arm11 = target->arch_info;
1533 if (breakpoint->type == BKPT_SOFT)
1535 LOG_INFO("sw breakpoint requested, but software breakpoints not enabled");
1536 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
1540 if (!arm11->free_brps)
1542 LOG_DEBUG("no breakpoint unit available for hardware breakpoint");
1543 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
1546 if (breakpoint->length != 4)
1548 LOG_DEBUG("only breakpoints of four bytes length supported");
1549 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
1557 int arm11_remove_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
1561 arm11_common_t * arm11 = target->arch_info;
1568 int arm11_add_watchpoint(struct target_s *target, watchpoint_t *watchpoint)
1570 FNC_INFO_NOTIMPLEMENTED;
1575 int arm11_remove_watchpoint(struct target_s *target, watchpoint_t *watchpoint)
1577 FNC_INFO_NOTIMPLEMENTED;
1582 // HACKHACKHACK - FIXME mode/state
1583 /* target algorithm support */
1584 int arm11_run_algorithm(struct target_s *target, int num_mem_params, mem_param_t *mem_params,
1585 int num_reg_params, reg_param_t *reg_params, uint32_t entry_point, uint32_t exit_point,
1586 int timeout_ms, void *arch_info)
1588 arm11_common_t *arm11 = target->arch_info;
1589 // enum armv4_5_state core_state = arm11->core_state;
1590 // enum armv4_5_mode core_mode = arm11->core_mode;
1591 uint32_t context[16];
1593 int exit_breakpoint_size = 0;
1594 int retval = ERROR_OK;
1595 LOG_DEBUG("Running algorithm");
1598 if (target->state != TARGET_HALTED)
1600 LOG_WARNING("target not halted");
1601 return ERROR_TARGET_NOT_HALTED;
1605 // if (armv4_5_mode_to_number(arm11->core_mode)==-1)
1606 // return ERROR_FAIL;
1609 for (size_t i = 0; i < 16; i++)
1611 context[i] = buf_get_u32((uint8_t*)(&arm11->reg_values[i]),0,32);
1612 LOG_DEBUG("Save %zi: 0x%" PRIx32 "",i,context[i]);
1615 cpsr = buf_get_u32((uint8_t*)(arm11->reg_values + ARM11_RC_CPSR),0,32);
1616 LOG_DEBUG("Save CPSR: 0x%" PRIx32 "", cpsr);
1618 for (int i = 0; i < num_mem_params; i++)
1620 target_write_buffer(target, mem_params[i].address, mem_params[i].size, mem_params[i].value);
1623 // Set register parameters
1624 for (int i = 0; i < num_reg_params; i++)
1626 reg_t *reg = register_get_by_name(arm11->core_cache, reg_params[i].reg_name, 0);
1629 LOG_ERROR("BUG: register '%s' not found", reg_params[i].reg_name);
1633 if (reg->size != reg_params[i].size)
1635 LOG_ERROR("BUG: register '%s' size doesn't match reg_params[i].size", reg_params[i].reg_name);
1638 arm11_set_reg(reg,reg_params[i].value);
1639 // printf("%i: Set %s =%08x\n", i, reg_params[i].reg_name,val);
1642 exit_breakpoint_size = 4;
1644 /* arm11->core_state = arm11_algorithm_info->core_state;
1645 if (arm11->core_state == ARMV4_5_STATE_ARM)
1646 exit_breakpoint_size = 4;
1647 else if (arm11->core_state == ARMV4_5_STATE_THUMB)
1648 exit_breakpoint_size = 2;
1651 LOG_ERROR("BUG: can't execute algorithms when not in ARM or Thumb state");
1657 /* arm11 at this point only supports ARM not THUMB mode
1658 however if this test needs to be reactivated the current state can be read back
1661 if (arm11_algorithm_info->core_mode != ARMV4_5_MODE_ANY)
1663 LOG_DEBUG("setting core_mode: 0x%2.2x", arm11_algorithm_info->core_mode);
1664 buf_set_u32(arm11->reg_list[ARM11_RC_CPSR].value, 0, 5, arm11_algorithm_info->core_mode);
1665 arm11->reg_list[ARM11_RC_CPSR].dirty = 1;
1666 arm11->reg_list[ARM11_RC_CPSR].valid = 1;
1670 if ((retval = breakpoint_add(target, exit_point, exit_breakpoint_size, BKPT_HARD)) != ERROR_OK)
1672 LOG_ERROR("can't add breakpoint to finish algorithm execution");
1673 retval = ERROR_TARGET_FAILURE;
1677 // no debug, otherwise breakpoint is not set
1678 CHECK_RETVAL(target_resume(target, 0, entry_point, 1, 0));
1680 CHECK_RETVAL(target_wait_state(target, TARGET_HALTED, timeout_ms));
1682 if (target->state != TARGET_HALTED)
1684 CHECK_RETVAL(target_halt(target));
1686 CHECK_RETVAL(target_wait_state(target, TARGET_HALTED, 500));
1688 retval = ERROR_TARGET_TIMEOUT;
1690 goto del_breakpoint;
1693 if (buf_get_u32(arm11->reg_list[15].value, 0, 32) != exit_point)
1695 LOG_WARNING("target reentered debug state, but not at the desired exit point: 0x%4.4" PRIx32 "",
1696 buf_get_u32(arm11->reg_list[15].value, 0, 32));
1697 retval = ERROR_TARGET_TIMEOUT;
1698 goto del_breakpoint;
1701 for (int i = 0; i < num_mem_params; i++)
1703 if (mem_params[i].direction != PARAM_OUT)
1704 target_read_buffer(target, mem_params[i].address, mem_params[i].size, mem_params[i].value);
1707 for (int i = 0; i < num_reg_params; i++)
1709 if (reg_params[i].direction != PARAM_OUT)
1711 reg_t *reg = register_get_by_name(arm11->core_cache, reg_params[i].reg_name, 0);
1714 LOG_ERROR("BUG: register '%s' not found", reg_params[i].reg_name);
1718 if (reg->size != reg_params[i].size)
1720 LOG_ERROR("BUG: register '%s' size doesn't match reg_params[i].size", reg_params[i].reg_name);
1724 buf_set_u32(reg_params[i].value, 0, 32, buf_get_u32(reg->value, 0, 32));
1729 breakpoint_remove(target, exit_point);
1733 for (size_t i = 0; i < 16; i++)
1735 LOG_DEBUG("restoring register %s with value 0x%8.8" PRIx32 "",
1736 arm11->reg_list[i].name, context[i]);
1737 arm11_set_reg(&arm11->reg_list[i], (uint8_t*)&context[i]);
1739 LOG_DEBUG("restoring CPSR with value 0x%8.8" PRIx32 "", cpsr);
1740 arm11_set_reg(&arm11->reg_list[ARM11_RC_CPSR], (uint8_t*)&cpsr);
1742 // arm11->core_state = core_state;
1743 // arm11->core_mode = core_mode;
1748 int arm11_target_create(struct target_s *target, Jim_Interp *interp)
1752 NEW(arm11_common_t, arm11, 1);
1754 arm11->target = target;
1756 if (target->tap == NULL)
1759 if (target->tap->ir_length != 5)
1761 LOG_ERROR("'target arm11' expects IR LENGTH = 5");
1762 return ERROR_COMMAND_SYNTAX_ERROR;
1765 target->arch_info = arm11;
1770 int arm11_init_target(struct command_context_s *cmd_ctx, struct target_s *target)
1772 /* Initialize anything we can set up without talking to the target */
1773 return arm11_build_reg_cache(target);
1776 /* talk to the target and set things up */
1777 int arm11_examine(struct target_s *target)
1781 arm11_common_t * arm11 = target->arch_info;
1785 arm11_add_IR(arm11, ARM11_IDCODE, ARM11_TAP_DEFAULT);
1787 scan_field_t idcode_field;
1789 arm11_setup_field(arm11, 32, NULL, &arm11->device_id, &idcode_field);
1791 arm11_add_dr_scan_vc(1, &idcode_field, TAP_DRPAUSE);
1795 arm11_add_debug_SCAN_N(arm11, 0x00, ARM11_TAP_DEFAULT);
1797 arm11_add_IR(arm11, ARM11_INTEST, ARM11_TAP_DEFAULT);
1799 scan_field_t chain0_fields[2];
1801 arm11_setup_field(arm11, 32, NULL, &arm11->didr, chain0_fields + 0);
1802 arm11_setup_field(arm11, 8, NULL, &arm11->implementor, chain0_fields + 1);
1804 arm11_add_dr_scan_vc(asizeof(chain0_fields), chain0_fields, TAP_IDLE);
1806 CHECK_RETVAL(jtag_execute_queue());
1808 switch (arm11->device_id & 0x0FFFF000)
1810 case 0x07B36000: LOG_INFO("found ARM1136"); break;
1811 case 0x07B56000: LOG_INFO("found ARM1156"); break;
1812 case 0x07B76000: LOG_INFO("found ARM1176"); break;
1815 LOG_ERROR("'target arm11' expects IDCODE 0x*7B*7****");
1820 arm11->debug_version = (arm11->didr >> 16) & 0x0F;
1822 if (arm11->debug_version != ARM11_DEBUG_V6 &&
1823 arm11->debug_version != ARM11_DEBUG_V61)
1825 LOG_ERROR("Only ARMv6 v6 and v6.1 architectures supported.");
1829 arm11->brp = ((arm11->didr >> 24) & 0x0F) + 1;
1830 arm11->wrp = ((arm11->didr >> 28) & 0x0F) + 1;
1832 /** \todo TODO: reserve one brp slot if we allow breakpoints during step */
1833 arm11->free_brps = arm11->brp;
1834 arm11->free_wrps = arm11->wrp;
1836 LOG_DEBUG("IDCODE %08" PRIx32 " IMPLEMENTOR %02x DIDR %08" PRIx32 "",
1838 (int)(arm11->implementor),
1841 /* as a side-effect this reads DSCR and thus
1842 * clears the ARM11_DSCR_STICKY_PRECISE_DATA_ABORT / Sticky Precise Data Abort Flag
1843 * as suggested by the spec.
1846 arm11_check_init(arm11, NULL);
1848 target_set_examined(target);
1853 int arm11_quit(void)
1855 FNC_INFO_NOTIMPLEMENTED;
1860 /** Load a register that is marked !valid in the register cache */
1861 int arm11_get_reg(reg_t *reg)
1865 target_t * target = ((arm11_reg_state_t *)reg->arch_info)->target;
1867 if (target->state != TARGET_HALTED)
1869 LOG_WARNING("target was not halted");
1870 return ERROR_TARGET_NOT_HALTED;
1873 /** \todo TODO: Check this. We assume that all registers are fetched at debug entry. */
1876 arm11_common_t *arm11 = target->arch_info;
1877 const arm11_reg_defs_t * arm11_reg_info = arm11_reg_defs + ((arm11_reg_state_t *)reg->arch_info)->def_index;
1883 /** Change a value in the register cache */
1884 int arm11_set_reg(reg_t *reg, uint8_t *buf)
1888 target_t * target = ((arm11_reg_state_t *)reg->arch_info)->target;
1889 arm11_common_t *arm11 = target->arch_info;
1890 // const arm11_reg_defs_t * arm11_reg_info = arm11_reg_defs + ((arm11_reg_state_t *)reg->arch_info)->def_index;
1892 arm11->reg_values[((arm11_reg_state_t *)reg->arch_info)->def_index] = buf_get_u32(buf, 0, 32);
1899 int arm11_build_reg_cache(target_t *target)
1901 arm11_common_t *arm11 = target->arch_info;
1903 NEW(reg_cache_t, cache, 1);
1904 NEW(reg_t, reg_list, ARM11_REGCACHE_COUNT);
1905 NEW(arm11_reg_state_t, arm11_reg_states, ARM11_REGCACHE_COUNT);
1907 if (arm11_regs_arch_type == -1)
1908 arm11_regs_arch_type = register_reg_arch_type(arm11_get_reg, arm11_set_reg);
1910 register_init_dummy(&arm11_gdb_dummy_fp_reg);
1911 register_init_dummy(&arm11_gdb_dummy_fps_reg);
1913 arm11->reg_list = reg_list;
1915 /* Build the process context cache */
1916 cache->name = "arm11 registers";
1918 cache->reg_list = reg_list;
1919 cache->num_regs = ARM11_REGCACHE_COUNT;
1921 reg_cache_t **cache_p = register_get_last_cache_p(&target->reg_cache);
1924 arm11->core_cache = cache;
1925 // armv7m->process_context = cache;
1929 /* Not very elegant assertion */
1930 if (ARM11_REGCACHE_COUNT != asizeof(arm11->reg_values) ||
1931 ARM11_REGCACHE_COUNT != asizeof(arm11_reg_defs) ||
1932 ARM11_REGCACHE_COUNT != ARM11_RC_MAX)
1934 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);
1938 for (i = 0; i < ARM11_REGCACHE_COUNT; i++)
1940 reg_t * r = reg_list + i;
1941 const arm11_reg_defs_t * rd = arm11_reg_defs + i;
1942 arm11_reg_state_t * rs = arm11_reg_states + i;
1946 r->value = (uint8_t *)(arm11->reg_values + i);
1949 r->bitfield_desc = NULL;
1950 r->num_bitfields = 0;
1951 r->arch_type = arm11_regs_arch_type;
1955 rs->target = target;
1961 int arm11_handle_bool(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, bool * var, char * name)
1965 LOG_INFO("%s is %s.", name, *var ? "enabled" : "disabled");
1970 return ERROR_COMMAND_SYNTAX_ERROR;
1975 case 'f': /* false */
1977 case 'd': /* disable */
1983 case 't': /* true */
1985 case 'e': /* enable */
1991 LOG_INFO("%s %s.", *var ? "Enabled" : "Disabled", name);
1996 #define BOOL_WRAPPER(name, print_name) \
1997 int arm11_handle_bool_##name(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) \
1999 return arm11_handle_bool(cmd_ctx, cmd, args, argc, &arm11_config_##name, print_name); \
2002 BOOL_WRAPPER(memwrite_burst, "memory write burst mode")
2003 BOOL_WRAPPER(memwrite_error_fatal, "fatal error mode for memory writes")
2004 BOOL_WRAPPER(memrw_no_increment, "\"no increment\" mode for memory transfers")
2005 BOOL_WRAPPER(step_irq_enable, "IRQs while stepping")
2006 BOOL_WRAPPER(hardware_step, "hardware single step")
2008 int arm11_handle_vcr(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2012 arm11_vcr = strtoul(args[0], NULL, 0);
2016 return ERROR_COMMAND_SYNTAX_ERROR;
2019 LOG_INFO("VCR 0x%08" PRIx32 "", arm11_vcr);
2023 const uint32_t arm11_coproc_instruction_limits[] =
2025 15, /* coprocessor */
2030 0xFFFFFFFF, /* value */
2033 arm11_common_t * arm11_find_target(const char * arg)
2038 tap = jtag_tap_by_string(arg);
2043 for (t = all_targets; t; t = t->next)
2048 /* if (t->type == arm11_target) */
2049 if (0 == strcmp(target_get_name(t), "arm11"))
2050 return t->arch_info;
2056 int arm11_handle_mrc_mcr(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, bool read)
2060 if (argc != (read ? 6 : 7))
2062 LOG_ERROR("Invalid number of arguments.");
2063 return ERROR_COMMAND_SYNTAX_ERROR;
2066 arm11_common_t * arm11 = arm11_find_target(args[0]);
2070 LOG_ERROR("Parameter 1 is not a the JTAG chain position of an ARM11 device.");
2071 return ERROR_COMMAND_SYNTAX_ERROR;
2074 if (arm11->target->state != TARGET_HALTED)
2076 LOG_WARNING("target was not halted");
2077 return ERROR_TARGET_NOT_HALTED;
2082 for (size_t i = 0; i < (read ? 5 : 6); i++)
2084 values[i] = strtoul(args[i + 1], NULL, 0);
2086 if (values[i] > arm11_coproc_instruction_limits[i])
2088 LOG_ERROR("Parameter %ld out of bounds (%" PRId32 " max).",
2090 arm11_coproc_instruction_limits[i]);
2091 return ERROR_COMMAND_SYNTAX_ERROR;
2095 uint32_t instr = 0xEE000010 |
2103 instr |= 0x00100000;
2105 retval = arm11_run_instr_data_prepare(arm11);
2106 if (retval != ERROR_OK)
2112 retval = arm11_run_instr_data_from_core_via_r0(arm11, instr, &result);
2113 if (retval != ERROR_OK)
2116 LOG_INFO("MRC p%d, %d, R0, c%d, c%d, %d = 0x%08" PRIx32 " (%" PRId32 ")",
2121 (int)(values[4]), result, result);
2125 retval = arm11_run_instr_data_to_core_via_r0(arm11, instr, values[5]);
2126 if (retval != ERROR_OK)
2129 LOG_INFO("MRC p%d, %d, R0 (#0x%08" PRIx32 "), c%d, c%d, %d",
2130 (int)(values[0]), (int)(values[1]),
2132 (int)(values[2]), (int)(values[3]), (int)(values[4]));
2135 return arm11_run_instr_data_finish(arm11);
2138 int arm11_handle_mrc(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2140 return arm11_handle_mrc_mcr(cmd_ctx, cmd, args, argc, true);
2143 int arm11_handle_mcr(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2145 return arm11_handle_mrc_mcr(cmd_ctx, cmd, args, argc, false);
2148 int arm11_register_commands(struct command_context_s *cmd_ctx)
2152 command_t *top_cmd, *mw_cmd;
2154 top_cmd = register_command(cmd_ctx, NULL, "arm11",
2155 NULL, COMMAND_ANY, NULL);
2157 /* "hardware_step" is only here to check if the default
2158 * simulate + breakpoint implementation is broken.
2159 * TEMPORARY! NOT DOCUMENTED!
2161 register_command(cmd_ctx, top_cmd, "hardware_step",
2162 arm11_handle_bool_hardware_step, COMMAND_ANY,
2163 "DEBUG ONLY - Hardware single stepping"
2164 " (default: disabled)");
2166 register_command(cmd_ctx, top_cmd, "mcr",
2167 arm11_handle_mcr, COMMAND_ANY,
2168 "Write Coprocessor register. mcr <jtag_target> <coprocessor> <opcode 1> <CRn> <CRm> <opcode 2> <32bit value to write>. All parameters are numbers only.");
2170 mw_cmd = register_command(cmd_ctx, top_cmd, "memwrite",
2171 NULL, COMMAND_ANY, NULL);
2172 register_command(cmd_ctx, mw_cmd, "burst",
2173 arm11_handle_bool_memwrite_burst, COMMAND_ANY,
2174 "Enable/Disable non-standard but fast burst mode"
2175 " (default: enabled)");
2176 register_command(cmd_ctx, mw_cmd, "error_fatal",
2177 arm11_handle_bool_memwrite_error_fatal, COMMAND_ANY,
2178 "Terminate program if transfer error was found"
2179 " (default: enabled)");
2181 register_command(cmd_ctx, top_cmd, "mrc",
2182 arm11_handle_mrc, COMMAND_ANY,
2183 "Read Coprocessor register. mrc <jtag_target> <coprocessor> <opcode 1> <CRn> <CRm> <opcode 2>. All parameters are numbers only.");
2184 register_command(cmd_ctx, top_cmd, "no_increment",
2185 arm11_handle_bool_memrw_no_increment, COMMAND_ANY,
2186 "Don't increment address on multi-read/-write"
2187 " (default: disabled)");
2188 register_command(cmd_ctx, top_cmd, "step_irq_enable",
2189 arm11_handle_bool_step_irq_enable, COMMAND_ANY,
2190 "Enable interrupts while stepping"
2191 " (default: disabled)");
2192 register_command(cmd_ctx, top_cmd, "vcr",
2193 arm11_handle_vcr, COMMAND_ANY,
2194 "Control (Interrupt) Vector Catch Register");