1 /***************************************************************************
2 * Copyright (C) 2008 digenius technology GmbH. *
4 * This program is free software; you can redistribute it and/or modify *
5 * it under the terms of the GNU General Public License as published by *
6 * the Free Software Foundation; either version 2 of the License, or *
7 * (at your option) any later version. *
9 * This program is distributed in the hope that it will be useful, *
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
12 * GNU General Public License for more details. *
14 * You should have received a copy of the GNU General Public License *
15 * along with this program; if not, write to the *
16 * Free Software Foundation, Inc., *
17 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
18 ***************************************************************************/
32 #define _DEBUG_INSTRUCTION_EXECUTION_
37 #define FNC_INFO DEBUG("-")
43 #define FNC_INFO_NOTIMPLEMENTED do { DEBUG("NOT IMPLEMENTED"); /*exit(-1);*/ } while (0)
45 #define FNC_INFO_NOTIMPLEMENTED
48 static void arm11_on_enter_debug_state(arm11_common_t * arm11);
51 #define ARM11_HANDLER(x) \
54 target_type_t arm11_target =
59 ARM11_HANDLER(arch_state),
61 ARM11_HANDLER(target_request_data),
64 ARM11_HANDLER(resume),
67 ARM11_HANDLER(assert_reset),
68 ARM11_HANDLER(deassert_reset),
69 ARM11_HANDLER(soft_reset_halt),
70 ARM11_HANDLER(prepare_reset_halt),
72 ARM11_HANDLER(get_gdb_reg_list),
74 ARM11_HANDLER(read_memory),
75 ARM11_HANDLER(write_memory),
77 ARM11_HANDLER(bulk_write_memory),
79 ARM11_HANDLER(checksum_memory),
81 ARM11_HANDLER(add_breakpoint),
82 ARM11_HANDLER(remove_breakpoint),
83 ARM11_HANDLER(add_watchpoint),
84 ARM11_HANDLER(remove_watchpoint),
86 ARM11_HANDLER(run_algorithm),
88 ARM11_HANDLER(register_commands),
89 ARM11_HANDLER(target_command),
90 ARM11_HANDLER(init_target),
94 int arm11_regs_arch_type = -1;
112 ARM11_REGISTER_SPSR_FIQ,
113 ARM11_REGISTER_SPSR_SVC,
114 ARM11_REGISTER_SPSR_ABT,
115 ARM11_REGISTER_SPSR_IRQ,
116 ARM11_REGISTER_SPSR_UND,
117 ARM11_REGISTER_SPSR_MON,
126 typedef struct arm11_reg_defs_s
131 enum arm11_regtype type;
134 /* update arm11_regcache_ids when changing this */
135 static const arm11_reg_defs_t arm11_reg_defs[] =
137 {"r0", 0, 0, ARM11_REGISTER_CORE},
138 {"r1", 1, 1, ARM11_REGISTER_CORE},
139 {"r2", 2, 2, ARM11_REGISTER_CORE},
140 {"r3", 3, 3, ARM11_REGISTER_CORE},
141 {"r4", 4, 4, ARM11_REGISTER_CORE},
142 {"r5", 5, 5, ARM11_REGISTER_CORE},
143 {"r6", 6, 6, ARM11_REGISTER_CORE},
144 {"r7", 7, 7, ARM11_REGISTER_CORE},
145 {"r8", 8, 8, ARM11_REGISTER_CORE},
146 {"r9", 9, 9, ARM11_REGISTER_CORE},
147 {"r10", 10, 10, ARM11_REGISTER_CORE},
148 {"r11", 11, 11, ARM11_REGISTER_CORE},
149 {"r12", 12, 12, ARM11_REGISTER_CORE},
150 {"sp", 13, 13, ARM11_REGISTER_CORE},
151 {"lr", 14, 14, ARM11_REGISTER_CORE},
152 {"pc", 15, 15, ARM11_REGISTER_CORE},
154 #if ARM11_REGCACHE_FREGS
155 {"f0", 0, 16, ARM11_REGISTER_FX},
156 {"f1", 1, 17, ARM11_REGISTER_FX},
157 {"f2", 2, 18, ARM11_REGISTER_FX},
158 {"f3", 3, 19, ARM11_REGISTER_FX},
159 {"f4", 4, 20, ARM11_REGISTER_FX},
160 {"f5", 5, 21, ARM11_REGISTER_FX},
161 {"f6", 6, 22, ARM11_REGISTER_FX},
162 {"f7", 7, 23, ARM11_REGISTER_FX},
163 {"fps", 0, 24, ARM11_REGISTER_FPS},
166 {"cpsr", 0, 25, ARM11_REGISTER_CPSR},
168 #if ARM11_REGCACHE_MODEREGS
169 {"r8_fiq", 8, -1, ARM11_REGISTER_FIQ},
170 {"r9_fiq", 9, -1, ARM11_REGISTER_FIQ},
171 {"r10_fiq", 10, -1, ARM11_REGISTER_FIQ},
172 {"r11_fiq", 11, -1, ARM11_REGISTER_FIQ},
173 {"r12_fiq", 12, -1, ARM11_REGISTER_FIQ},
174 {"r13_fiq", 13, -1, ARM11_REGISTER_FIQ},
175 {"r14_fiq", 14, -1, ARM11_REGISTER_FIQ},
176 {"spsr_fiq", 0, -1, ARM11_REGISTER_SPSR_FIQ},
178 {"r13_svc", 13, -1, ARM11_REGISTER_SVC},
179 {"r14_svc", 14, -1, ARM11_REGISTER_SVC},
180 {"spsr_svc", 0, -1, ARM11_REGISTER_SPSR_SVC},
182 {"r13_abt", 13, -1, ARM11_REGISTER_ABT},
183 {"r14_abt", 14, -1, ARM11_REGISTER_ABT},
184 {"spsr_abt", 0, -1, ARM11_REGISTER_SPSR_ABT},
186 {"r13_irq", 13, -1, ARM11_REGISTER_IRQ},
187 {"r14_irq", 14, -1, ARM11_REGISTER_IRQ},
188 {"spsr_irq", 0, -1, ARM11_REGISTER_SPSR_IRQ},
190 {"r13_und", 13, -1, ARM11_REGISTER_UND},
191 {"r14_und", 14, -1, ARM11_REGISTER_UND},
192 {"spsr_und", 0, -1, ARM11_REGISTER_SPSR_UND},
195 {"r13_mon", 13, -1, ARM11_REGISTER_MON},
196 {"r14_mon", 14, -1, ARM11_REGISTER_MON},
197 {"spsr_mon", 0, -1, ARM11_REGISTER_SPSR_MON},
200 /* Debug Registers */
201 {"dscr", 0, -1, ARM11_REGISTER_DSCR},
202 {"wdtr", 0, -1, ARM11_REGISTER_WDTR},
203 {"rdtr", 0, -1, ARM11_REGISTER_RDTR},
206 enum arm11_regcache_ids
209 ARM11_RC_RX = ARM11_RC_R0,
224 ARM11_RC_SP = ARM11_RC_R13,
226 ARM11_RC_LR = ARM11_RC_R14,
228 ARM11_RC_PC = ARM11_RC_R15,
230 #if ARM11_REGCACHE_FREGS
232 ARM11_RC_FX = ARM11_RC_F0,
245 #if ARM11_REGCACHE_MODEREGS
284 #define ARM11_GDB_REGISTER_COUNT 26
286 u8 arm11_gdb_dummy_fp_value[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
288 reg_t arm11_gdb_dummy_fp_reg =
290 "GDB dummy floating-point register", arm11_gdb_dummy_fp_value, 0, 1, 96, NULL, 0, NULL, 0
293 u8 arm11_gdb_dummy_fps_value[] = {0, 0, 0, 0};
295 reg_t arm11_gdb_dummy_fps_reg =
297 "GDB dummy floating-point status register", arm11_gdb_dummy_fps_value, 0, 1, 32, NULL, 0, NULL, 0
302 /** Check and if necessary take control of the system
304 * \param arm11 Target state variable.
305 * \param dscr If the current DSCR content is
306 * available a pointer to a word holding the
307 * DSCR can be passed. Otherwise use NULL.
309 void arm11_check_init(arm11_common_t * arm11, u32 * dscr)
313 u32 dscr_local_tmp_copy;
317 dscr = &dscr_local_tmp_copy;
318 *dscr = arm11_read_DSCR(arm11);
321 if (!(*dscr & ARM11_DSCR_MODE_SELECT))
323 DEBUG("Bringing target into debug mode");
325 *dscr |= ARM11_DSCR_MODE_SELECT; /* Halt debug-mode */
326 arm11_write_DSCR(arm11, *dscr);
328 /* add further reset initialization here */
330 if (*dscr & ARM11_DSCR_CORE_HALTED)
332 arm11->target->state = TARGET_HALTED;
333 arm11->target->debug_reason = arm11_get_DSCR_debug_reason(*dscr);
337 arm11->target->state = TARGET_RUNNING;
338 arm11->target->debug_reason = DBG_REASON_NOTHALTED;
341 arm11_sc7_clear_bw(arm11);
348 (arm11->reg_values[ARM11_RC_##x])
350 /** Save processor state.
352 * This is called when the HALT instruction has succeeded
353 * or on other occasions that stop the processor.
356 static void arm11_on_enter_debug_state(arm11_common_t * arm11)
361 for(i = 0; i < asizeof(arm11->reg_values); i++)
363 arm11->reg_list[i].valid = 1;
364 arm11->reg_list[i].dirty = 0;
369 R(DSCR) = arm11_read_DSCR(arm11);
373 if (R(DSCR) & ARM11_DSCR_WDTR_FULL)
375 arm11_add_debug_SCAN_N(arm11, 0x05, -1);
377 arm11_add_IR(arm11, ARM11_INTEST, -1);
379 scan_field_t chain5_fields[3];
381 arm11_setup_field(arm11, 32, NULL, &R(WDTR), chain5_fields + 0);
382 arm11_setup_field(arm11, 1, NULL, NULL, chain5_fields + 1);
383 arm11_setup_field(arm11, 1, NULL, NULL, chain5_fields + 2);
385 jtag_add_dr_scan_vc(asizeof(chain5_fields), chain5_fields, TAP_PD);
389 arm11->reg_list[ARM11_RC_WDTR].valid = 0;
393 /* DSCR: set ARM11_DSCR_EXECUTE_ARM_INSTRUCTION_ENABLE */
394 /* ARM1176 spec says this is needed only for wDTR/rDTR's "ITR mode", but not to issue ITRs
395 ARM1136 seems to require this to issue ITR's as well */
397 u32 new_dscr = R(DSCR) | ARM11_DSCR_EXECUTE_ARM_INSTRUCTION_ENABLE;
399 /* this executes JTAG queue: */
401 arm11_write_DSCR(arm11, new_dscr);
403 // jtag_execute_queue();
407 // DEBUG("SAVE DSCR %08x", R(DSCR));
409 // if (R(DSCR) & ARM11_DSCR_WDTR_FULL)
410 // DEBUG("SAVE wDTR %08x", R(WDTR));
414 Before executing any instruction in debug state you have to drain the write buffer.
415 This ensures that no imprecise Data Aborts can return at a later point:*/
417 /** \todo TODO: Test drain write buffer. */
422 /* MRC p14,0,R0,c5,c10,0 */
423 // arm11_run_instr_no_data1(arm11, /*0xee150e1a*/0xe320f000);
425 /* mcr 15, 0, r0, cr7, cr10, {4} */
426 arm11_run_instr_no_data1(arm11, 0xee070f9a);
428 u32 dscr = arm11_read_DSCR(arm11);
430 DEBUG("DRAIN, DSCR %08x", dscr);
432 if (dscr & ARM11_DSCR_STICKY_IMPRECISE_DATA_ABORT)
434 arm11_run_instr_no_data1(arm11, 0xe320f000);
436 dscr = arm11_read_DSCR(arm11);
438 DEBUG("DRAIN, DSCR %08x (DONE)", dscr);
446 arm11_run_instr_data_prepare(arm11);
451 /** \todo TODO: handle other mode registers */
454 for (i = 0; i < 15; i++)
456 /* MCR p14,0,R?,c0,c5,0 */
457 arm11_run_instr_data_from_core(arm11, 0xEE000E15 | (i << 12), &R(RX + i), 1);
463 /* check rDTRfull in DSCR */
465 if (R(DSCR) & ARM11_DSCR_RDTR_FULL)
467 /* MRC p14,0,R0,c0,c5,0 (move rDTR -> r0 (-> wDTR -> local var)) */
468 arm11_run_instr_data_from_core_via_r0(arm11, 0xEE100E15, &R(RDTR));
472 arm11->reg_list[ARM11_RC_RDTR].valid = 0;
477 /* MRS r0,CPSR (move CPSR -> r0 (-> wDTR -> local var)) */
478 arm11_run_instr_data_from_core_via_r0(arm11, 0xE10F0000, &R(CPSR));
482 /* MOV R0,PC (move PC -> r0 (-> wDTR -> local var)) */
483 arm11_run_instr_data_from_core_via_r0(arm11, 0xE1A0000F, &R(PC));
485 /* adjust PC depending on ARM state */
487 if (R(CPSR) & ARM11_CPSR_J) /* Java state */
489 arm11->reg_values[ARM11_RC_PC] -= 0;
491 else if (R(CPSR) & ARM11_CPSR_T) /* Thumb state */
493 arm11->reg_values[ARM11_RC_PC] -= 4;
497 arm11->reg_values[ARM11_RC_PC] -= 8;
500 // DEBUG("SAVE PC %08x", R(PC));
502 arm11_run_instr_data_finish(arm11);
506 for(i = 0; i < ARM11_REGCACHE_COUNT; i++)
508 if (!arm11->reg_list[i].valid)
510 if (arm11->reg_history[i].valid)
511 INFO("%8s INVALID (%08x)", arm11_reg_defs[i].name, arm11->reg_history[i].value);
515 if (arm11->reg_history[i].valid)
517 if (arm11->reg_history[i].value != arm11->reg_values[i])
518 INFO("%8s %08x (%08x)", arm11_reg_defs[i].name, arm11->reg_values[i], arm11->reg_history[i].value);
522 INFO("%8s %08x (INVALID)", arm11_reg_defs[i].name, arm11->reg_values[i]);
529 /** Restore processor state
531 * This is called in preparation for the RESTART function.
534 void arm11_leave_debug_state(arm11_common_t * arm11)
538 arm11_run_instr_data_prepare(arm11);
540 /** \todo TODO: handle other mode registers */
542 /* restore R1 - R14 */
544 for (i = 1; i < 15; i++)
546 if (!arm11->reg_list[ARM11_RC_RX + i].dirty)
549 /* MRC p14,0,r?,c0,c5,0 */
550 arm11_run_instr_data_to_core1(arm11, 0xee100e15 | (i << 12), R(RX + i));
552 // DEBUG("RESTORE R%d %08x", i, R(RX + i));
555 arm11_run_instr_data_finish(arm11);
558 /* spec says clear wDTR and rDTR; we assume they are clear as
559 otherwide out programming would be sloppy */
562 u32 DSCR = arm11_read_DSCR(arm11);
564 if (DSCR & (ARM11_DSCR_RDTR_FULL | ARM11_DSCR_WDTR_FULL))
566 ERROR("wDTR/rDTR inconsistent (DSCR %08x)", DSCR);
570 arm11_run_instr_data_prepare(arm11);
572 /* restore original wDTR */
574 if ((R(DSCR) & ARM11_DSCR_WDTR_FULL) || arm11->reg_list[ARM11_RC_WDTR].dirty)
576 /* MCR p14,0,R0,c0,c5,0 */
577 arm11_run_instr_data_to_core_via_r0(arm11, 0xee000e15, R(WDTR));
583 arm11_run_instr_data_to_core_via_r0(arm11, 0xe129f000, R(CPSR));
589 arm11_run_instr_data_to_core_via_r0(arm11, 0xe1a0f000, R(PC));
594 /* MRC p14,0,r0,c0,c5,0 */
595 arm11_run_instr_data_to_core1(arm11, 0xee100e15, R(R0));
597 arm11_run_instr_data_finish(arm11);
602 arm11_write_DSCR(arm11, R(DSCR));
607 if (R(DSCR) & ARM11_DSCR_RDTR_FULL || arm11->reg_list[ARM11_RC_RDTR].dirty)
609 arm11_add_debug_SCAN_N(arm11, 0x05, -1);
611 arm11_add_IR(arm11, ARM11_EXTEST, -1);
613 scan_field_t chain5_fields[3];
615 u8 Ready = 0; /* ignored */
616 u8 Valid = 0; /* ignored */
618 arm11_setup_field(arm11, 32, &R(RDTR), NULL, chain5_fields + 0);
619 arm11_setup_field(arm11, 1, &Ready, NULL, chain5_fields + 1);
620 arm11_setup_field(arm11, 1, &Valid, NULL, chain5_fields + 2);
622 jtag_add_dr_scan_vc(asizeof(chain5_fields), chain5_fields, TAP_PD);
627 for(i = 0; i < ARM11_REGCACHE_COUNT; i++)
629 arm11->reg_history[i].value = arm11->reg_values[i];
630 arm11->reg_history[i].valid = arm11->reg_list[i].valid;
632 arm11->reg_list[i].valid = 0;
633 arm11->reg_list[i].dirty = 0;
638 /* poll current target status */
639 int arm11_poll(struct target_s *target)
643 arm11_common_t * arm11 = target->arch_info;
645 if (arm11->trst_active)
648 u32 dscr = arm11_read_DSCR(arm11);
650 DEBUG("DSCR %08x", dscr);
652 arm11_check_init(arm11, &dscr);
654 if (dscr & ARM11_DSCR_CORE_HALTED)
656 // DEBUG("CH %d", target->state);
658 if (target->state != TARGET_HALTED)
660 DEBUG("enter TARGET_HALTED");
661 target->state = TARGET_HALTED;
662 target->debug_reason = arm11_get_DSCR_debug_reason(dscr);
663 arm11_on_enter_debug_state(arm11);
668 // DEBUG("CR %d", target->state);
670 if (target->state != TARGET_RUNNING)
672 DEBUG("enter TARGET_RUNNING");
673 target->state = TARGET_RUNNING;
674 target->debug_reason = DBG_REASON_NOTHALTED;
680 /* architecture specific status reply */
681 int arm11_arch_state(struct target_s *target)
683 FNC_INFO_NOTIMPLEMENTED;
689 /* target request support */
690 int arm11_target_request_data(struct target_s *target, u32 size, u8 *buffer)
692 FNC_INFO_NOTIMPLEMENTED;
699 /* target execution control */
700 int arm11_halt(struct target_s *target)
704 arm11_common_t * arm11 = target->arch_info;
706 DEBUG("target->state: %s", target_state_strings[target->state]);
708 if (target->state == TARGET_HALTED)
710 WARNING("target was already halted");
711 return ERROR_TARGET_ALREADY_HALTED;
714 if (arm11->trst_active)
716 arm11->halt_requested = true;
720 arm11_add_IR(arm11, ARM11_HALT, TAP_RTI);
722 jtag_execute_queue();
728 dscr = arm11_read_DSCR(arm11);
730 if (dscr & ARM11_DSCR_CORE_HALTED)
734 arm11_on_enter_debug_state(arm11);
736 target->state = TARGET_HALTED;
737 target->debug_reason = arm11_get_DSCR_debug_reason(dscr);
743 int arm11_resume(struct target_s *target, int current, u32 address, int handle_breakpoints, int debug_execution)
747 arm11_common_t * arm11 = target->arch_info;
749 DEBUG("target->state: %s", target_state_strings[target->state]);
751 if (target->state != TARGET_HALTED)
753 WARNING("target was not halted");
754 return ERROR_TARGET_NOT_HALTED;
760 target->state = TARGET_RUNNING;
761 target->debug_reason = DBG_REASON_NOTHALTED;
763 arm11_leave_debug_state(arm11);
765 arm11_add_IR(arm11, ARM11_RESTART, TAP_RTI);
767 jtag_execute_queue();
771 u32 dscr = arm11_read_DSCR(arm11);
773 DEBUG("DSCR %08x", dscr);
775 if (dscr & ARM11_DSCR_CORE_RESTARTED)
779 DEBUG("RES %d", target->state);
784 int arm11_step(struct target_s *target, int current, u32 address, int handle_breakpoints)
788 DEBUG("target->state: %s", target_state_strings[target->state]);
790 if (target->state != TARGET_HALTED)
792 WARNING("target was not halted");
793 return ERROR_TARGET_NOT_HALTED;
796 arm11_common_t * arm11 = target->arch_info;
798 /** \todo TODO: check if break-/watchpoints make any sense at all in combination
801 /** \todo TODO: check if disabling IRQs might be a good idea here. Alternatively
802 the VCR might be something worth looking into. */
804 /* Set up breakpoint for stepping */
806 arm11_sc7_action_t brp[2];
809 brp[0].address = ARM11_SC7_BVR0;
810 brp[0].value = R(PC);
812 brp[1].address = ARM11_SC7_BCR0;
813 brp[1].value = 0x1 | (3 << 1) | (0x0F << 5) | (0 << 14) | (0 << 16) | (0 << 20) | (2 << 21);
815 arm11_sc7_run(arm11, brp, asizeof(brp));
819 arm11_leave_debug_state(arm11);
821 arm11_add_IR(arm11, ARM11_RESTART, TAP_RTI);
823 jtag_execute_queue();
825 /** \todo TODO: add a timeout */
831 u32 dscr = arm11_read_DSCR(arm11);
833 DEBUG("DSCR %08x", dscr);
835 if ((dscr & (ARM11_DSCR_CORE_RESTARTED | ARM11_DSCR_CORE_HALTED)) ==
836 (ARM11_DSCR_CORE_RESTARTED | ARM11_DSCR_CORE_HALTED))
841 /* clear breakpoint */
843 arm11_sc7_clear_bw(arm11);
848 arm11_on_enter_debug_state(arm11);
850 // target->state = TARGET_HALTED;
851 target->debug_reason = DBG_REASON_SINGLESTEP;
857 /* target reset control */
858 int arm11_assert_reset(struct target_s *target)
863 /* assert reset lines */
864 /* resets only the DBGTAP, not the ARM */
866 jtag_add_reset(1, 0);
867 jtag_add_sleep(5000);
869 arm11_common_t * arm11 = target->arch_info;
870 arm11->trst_active = true;
876 int arm11_deassert_reset(struct target_s *target)
881 DEBUG("target->state: %s", target_state_strings[target->state]);
883 /* deassert reset lines */
884 jtag_add_reset(0, 0);
886 arm11_common_t * arm11 = target->arch_info;
887 arm11->trst_active = false;
889 if (arm11->halt_requested)
890 return arm11_halt(target);
896 int arm11_soft_reset_halt(struct target_s *target)
898 FNC_INFO_NOTIMPLEMENTED;
903 int arm11_prepare_reset_halt(struct target_s *target)
905 FNC_INFO_NOTIMPLEMENTED;
911 /* target register access for gdb */
912 int arm11_get_gdb_reg_list(struct target_s *target, struct reg_s **reg_list[], int *reg_list_size)
916 arm11_common_t * arm11 = target->arch_info;
918 if (target->state != TARGET_HALTED)
920 return ERROR_TARGET_NOT_HALTED;
923 *reg_list_size = ARM11_GDB_REGISTER_COUNT;
924 *reg_list = malloc(sizeof(reg_t*) * ARM11_GDB_REGISTER_COUNT);
927 for (i = 16; i < 24; i++)
929 (*reg_list)[i] = &arm11_gdb_dummy_fp_reg;
932 (*reg_list)[24] = &arm11_gdb_dummy_fps_reg;
936 for (i = 0; i < ARM11_REGCACHE_COUNT; i++)
938 if (arm11_reg_defs[i].gdb_num == -1)
941 (*reg_list)[arm11_reg_defs[i].gdb_num] = arm11->reg_list + i;
948 /* target memory access
949 * size: 1 = byte (8bit), 2 = half-word (16bit), 4 = word (32bit)
950 * count: number of items of <size>
952 int arm11_read_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer)
954 /** \todo TODO: check if buffer cast to u32* and u16* might cause alignment problems */
958 DEBUG("ADDR %08x SIZE %08x COUNT %08x", address, size, count);
960 arm11_common_t * arm11 = target->arch_info;
962 arm11_run_instr_data_prepare(arm11);
964 /* MRC p14,0,r0,c0,c5,0 */
965 arm11_run_instr_data_to_core1(arm11, 0xee100e15, address);
970 /** \todo TODO: check if dirty is the right choice to force a rewrite on arm11_resume() */
971 arm11->reg_list[ARM11_RC_R1].dirty = 1;
975 /* ldrb r1, [r0], #1 */
976 arm11_run_instr_no_data1(arm11, 0xe4d01001);
979 /* MCR p14,0,R1,c0,c5,0 */
980 arm11_run_instr_data_from_core(arm11, 0xEE001E15, &res, 1);
988 arm11->reg_list[ARM11_RC_R1].dirty = 1;
990 u16 * buf16 = (u16*)buffer;
994 /* ldrh r1, [r0], #2 */
995 arm11_run_instr_no_data1(arm11, 0xe0d010b2);
999 /* MCR p14,0,R1,c0,c5,0 */
1000 arm11_run_instr_data_from_core(arm11, 0xEE001E15, &res, 1);
1009 /* LDC p14,c5,[R0],#4 */
1010 arm11_run_instr_data_from_core(arm11, 0xecb05e01, (u32 *)buffer, count);
1014 arm11_run_instr_data_finish(arm11);
1019 int arm11_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer)
1023 DEBUG("ADDR %08x SIZE %08x COUNT %08x", address, size, count);
1025 arm11_common_t * arm11 = target->arch_info;
1027 arm11_run_instr_data_prepare(arm11);
1029 /* MRC p14,0,r0,c0,c5,0 */
1030 arm11_run_instr_data_to_core1(arm11, 0xee100e15, address);
1035 arm11->reg_list[ARM11_RC_R1].dirty = 1;
1039 /* MRC p14,0,r1,c0,c5,0 */
1040 arm11_run_instr_data_to_core1(arm11, 0xee101e15, *buffer++);
1042 /* strb r1, [r0], #1 */
1043 arm11_run_instr_no_data1(arm11, 0xe4c01001);
1049 arm11->reg_list[ARM11_RC_R1].dirty = 1;
1051 u16 * buf16 = (u16*)buffer;
1055 /* MRC p14,0,r1,c0,c5,0 */
1056 arm11_run_instr_data_to_core1(arm11, 0xee101e15, *buf16++);
1058 /* strh r1, [r0], #2 */
1059 arm11_run_instr_no_data1(arm11, 0xe0c010b2);
1065 /** \todo TODO: check if buffer cast to u32* might cause alignment problems */
1067 /* STC p14,c5,[R0],#4 */
1068 arm11_run_instr_data_to_core(arm11, 0xeca05e01, (u32 *)buffer, count);
1072 arm11_run_instr_data_finish(arm11);
1078 /* write target memory in multiples of 4 byte, optimized for writing large quantities of data */
1079 int arm11_bulk_write_memory(struct target_s *target, u32 address, u32 count, u8 *buffer)
1083 return arm11_write_memory(target, address, 4, count, buffer);
1087 int arm11_checksum_memory(struct target_s *target, u32 address, u32 count, u32* checksum)
1089 FNC_INFO_NOTIMPLEMENTED;
1095 /* target break-/watchpoint control
1096 * rw: 0 = write, 1 = read, 2 = access
1098 int arm11_add_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
1100 FNC_INFO_NOTIMPLEMENTED;
1105 int arm11_remove_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
1107 FNC_INFO_NOTIMPLEMENTED;
1112 int arm11_add_watchpoint(struct target_s *target, watchpoint_t *watchpoint)
1114 FNC_INFO_NOTIMPLEMENTED;
1119 int arm11_remove_watchpoint(struct target_s *target, watchpoint_t *watchpoint)
1121 FNC_INFO_NOTIMPLEMENTED;
1127 /* target algorithm support */
1128 int arm11_run_algorithm(struct target_s *target, int num_mem_params, mem_param_t *mem_params, int num_reg_params, reg_param_t *reg_param, u32 entry_point, u32 exit_point, int timeout_ms, void *arch_info)
1130 FNC_INFO_NOTIMPLEMENTED;
1136 int arm11_register_commands(struct command_context_s *cmd_ctx)
1143 int arm11_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target)
1149 ERROR("'target arm11' 4th argument <jtag chain pos>");
1153 int chain_pos = strtoul(args[3], NULL, 0);
1155 NEW(arm11_common_t, arm11, 1);
1157 arm11->target = target;
1159 /* prepare JTAG information for the new target */
1160 arm11->jtag_info.chain_pos = chain_pos;
1161 arm11->jtag_info.scann_size = 5;
1163 arm_jtag_setup_connection(&arm11->jtag_info);
1165 jtag_device_t *device = jtag_get_device(chain_pos);
1167 if (device->ir_length != 5)
1169 ERROR("'target arm11' expects 'jtag_device 5 0x01 0x1F 0x1E'");
1173 target->arch_info = arm11;
1178 int arm11_init_target(struct command_context_s *cmd_ctx, struct target_s *target)
1182 arm11_common_t * arm11 = target->arch_info;
1186 arm11_add_IR(arm11, ARM11_IDCODE, -1);
1188 scan_field_t idcode_field;
1190 arm11_setup_field(arm11, 32, NULL, &arm11->device_id, &idcode_field);
1192 jtag_add_dr_scan_vc(1, &idcode_field, TAP_PD);
1196 arm11_add_debug_SCAN_N(arm11, 0x00, -1);
1198 arm11_add_IR(arm11, ARM11_INTEST, -1);
1200 scan_field_t chain0_fields[2];
1202 arm11_setup_field(arm11, 32, NULL, &arm11->didr, chain0_fields + 0);
1203 arm11_setup_field(arm11, 8, NULL, &arm11->implementor, chain0_fields + 1);
1205 jtag_add_dr_scan_vc(asizeof(chain0_fields), chain0_fields, TAP_RTI);
1207 jtag_execute_queue();
1210 switch (arm11->device_id & 0x0FFFF000)
1212 case 0x07B36000: INFO("found ARM1136"); break;
1213 case 0x07B56000: INFO("found ARM1156"); break;
1214 case 0x07B76000: INFO("found ARM1176"); break;
1217 ERROR("'target arm11' expects IDCODE 0x*7B*7****");
1222 arm11->brp = ((arm11->didr >> 24) & 0x0F) + 1;
1223 arm11->wrp = ((arm11->didr >> 28) & 0x0F) + 1;
1226 DEBUG("IDCODE %08x IMPLEMENTOR %02x DIDR %08x",
1231 arm11_build_reg_cache(target);
1234 /* as a side-effect this reads DSCR and thus
1235 * clears the ARM11_DSCR_STICKY_PRECISE_DATA_ABORT / Sticky Precise Data Abort Flag
1236 * as suggested by the spec.
1239 arm11_check_init(arm11, NULL);
1244 int arm11_quit(void)
1246 FNC_INFO_NOTIMPLEMENTED;
1251 /** Load a register that is marked !valid in the register cache */
1252 int arm11_get_reg(reg_t *reg)
1256 target_t * target = ((arm11_reg_state_t *)reg->arch_info)->target;
1258 if (target->state != TARGET_HALTED)
1260 return ERROR_TARGET_NOT_HALTED;
1263 /** \todo TODO: Check this. We assume that all registers are fetched debug entry. */
1266 arm11_common_t *arm11 = target->arch_info;
1267 const arm11_reg_defs_t * arm11_reg_info = arm11_reg_defs + ((arm11_reg_state_t *)reg->arch_info)->def_index;
1273 /** Change a value in the register cache */
1274 int arm11_set_reg(reg_t *reg, u8 *buf)
1278 target_t * target = ((arm11_reg_state_t *)reg->arch_info)->target;
1279 arm11_common_t *arm11 = target->arch_info;
1280 // const arm11_reg_defs_t * arm11_reg_info = arm11_reg_defs + ((arm11_reg_state_t *)reg->arch_info)->def_index;
1282 arm11->reg_values[((arm11_reg_state_t *)reg->arch_info)->def_index] = buf_get_u32(buf, 0, 32);
1290 void arm11_build_reg_cache(target_t *target)
1292 arm11_common_t *arm11 = target->arch_info;
1294 NEW(reg_cache_t, cache, 1);
1295 NEW(reg_t, reg_list, ARM11_REGCACHE_COUNT);
1296 NEW(arm11_reg_state_t, arm11_reg_states, ARM11_REGCACHE_COUNT);
1298 if (arm11_regs_arch_type == -1)
1299 arm11_regs_arch_type = register_reg_arch_type(arm11_get_reg, arm11_set_reg);
1301 arm11->reg_list = reg_list;
1303 /* Build the process context cache */
1304 cache->name = "arm11 registers";
1306 cache->reg_list = reg_list;
1307 cache->num_regs = ARM11_REGCACHE_COUNT;
1309 reg_cache_t **cache_p = register_get_last_cache_p(&target->reg_cache);
1312 // armv7m->core_cache = cache;
1313 // armv7m->process_context = cache;
1317 /* Not very elegant assertion */
1318 if (ARM11_REGCACHE_COUNT != asizeof(arm11->reg_values) ||
1319 ARM11_REGCACHE_COUNT != asizeof(arm11_reg_defs) ||
1320 ARM11_REGCACHE_COUNT != ARM11_RC_MAX)
1322 ERROR("arm11->reg_values inconsistent (%d %d %d %d)", ARM11_REGCACHE_COUNT, asizeof(arm11->reg_values), asizeof(arm11_reg_defs), ARM11_RC_MAX);
1326 for (i = 0; i < ARM11_REGCACHE_COUNT; i++)
1328 reg_t * r = reg_list + i;
1329 const arm11_reg_defs_t * rd = arm11_reg_defs + i;
1330 arm11_reg_state_t * rs = arm11_reg_states + i;
1334 r->value = (u8 *)(arm11->reg_values + i);
1337 r->bitfield_desc = NULL;
1338 r->num_bitfields = 0;
1339 r->arch_type = arm11_regs_arch_type;
1343 rs->target = target;
1348 arm11_run_instr_data_prepare(arm11);
1350 /* MRC p14,0,r0,c0,c5,0 */
1351 arm11_run_instr_data_to_core(arm11, 0xee100e15, 0xCA00003C);
1352 /* MRC p14,0,r1,c0,c5,0 */
1353 arm11_run_instr_data_to_core(arm11, 0xee101e15, 0xFFFFFFFF);
1355 arm11_run_instr_data_finish(arm11);