1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
27 #include "time_support.h"
33 #define _DEBUG_INSTRUCTION_EXECUTION_
37 int arm920t_register_commands(struct command_context_s *cmd_ctx);
39 int arm920t_handle_cp15_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
40 int arm920t_handle_cp15i_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
41 int arm920t_handle_virt2phys_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
42 int arm920t_handle_cache_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
43 int arm920t_handle_md_phys_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
44 int arm920t_handle_mw_phys_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
46 int arm920t_handle_read_cache_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
47 int arm920t_handle_read_mmu_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
49 /* forward declarations */
50 int arm920t_target_create(struct target_s *target, Jim_Interp *interp);
51 int arm920t_init_target(struct command_context_s *cmd_ctx, struct target_s *target);
52 int arm920t_quit(void);
53 int arm920t_arch_state(struct target_s *target);
54 int arm920t_read_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
55 int arm920t_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
56 int arm920t_soft_reset_halt(struct target_s *target);
58 #define ARM920T_CP15_PHYS_ADDR(x, y, z) ((x << 5) | (y << 1) << (z))
60 target_type_t arm920t_target =
65 .arch_state = arm920t_arch_state,
67 .target_request_data = arm7_9_target_request_data,
70 .resume = arm7_9_resume,
73 .assert_reset = arm7_9_assert_reset,
74 .deassert_reset = arm7_9_deassert_reset,
75 .soft_reset_halt = arm920t_soft_reset_halt,
77 .get_gdb_reg_list = armv4_5_get_gdb_reg_list,
79 .read_memory = arm920t_read_memory,
80 .write_memory = arm920t_write_memory,
81 .bulk_write_memory = arm7_9_bulk_write_memory,
82 .checksum_memory = arm7_9_checksum_memory,
83 .blank_check_memory = arm7_9_blank_check_memory,
85 .run_algorithm = armv4_5_run_algorithm,
87 .add_breakpoint = arm7_9_add_breakpoint,
88 .remove_breakpoint = arm7_9_remove_breakpoint,
89 .add_watchpoint = arm7_9_add_watchpoint,
90 .remove_watchpoint = arm7_9_remove_watchpoint,
92 .register_commands = arm920t_register_commands,
93 .target_create = arm920t_target_create,
94 .init_target = arm920t_init_target,
95 .examine = arm9tdmi_examine,
99 int arm920t_read_cp15_physical(target_t *target, int reg_addr, u32 *value)
101 armv4_5_common_t *armv4_5 = target->arch_info;
102 arm7_9_common_t *arm7_9 = armv4_5->arch_info;
103 arm_jtag_t *jtag_info = &arm7_9->jtag_info;
104 scan_field_t fields[4];
105 u8 access_type_buf = 1;
106 u8 reg_addr_buf = reg_addr & 0x3f;
109 jtag_add_end_state(TAP_RTI);
110 arm_jtag_scann(jtag_info, 0xf);
111 arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
113 fields[0].device = jtag_info->chain_pos;
114 fields[0].num_bits = 1;
115 fields[0].out_value = &access_type_buf;
116 fields[0].out_mask = NULL;
117 fields[0].in_value = NULL;
118 fields[0].in_check_value = NULL;
119 fields[0].in_check_mask = NULL;
120 fields[0].in_handler = NULL;
121 fields[0].in_handler_priv = NULL;
123 fields[1].device = jtag_info->chain_pos;
124 fields[1].num_bits = 32;
125 fields[1].out_value = NULL;
126 fields[1].out_mask = NULL;
127 fields[1].in_value = NULL;
128 fields[1].in_check_value = NULL;
129 fields[1].in_check_mask = NULL;
130 fields[1].in_handler = NULL;
131 fields[1].in_handler_priv = NULL;
133 fields[2].device = jtag_info->chain_pos;
134 fields[2].num_bits = 6;
135 fields[2].out_value = ®_addr_buf;
136 fields[2].out_mask = NULL;
137 fields[2].in_value = NULL;
138 fields[2].in_check_value = NULL;
139 fields[2].in_check_mask = NULL;
140 fields[2].in_handler = NULL;
141 fields[2].in_handler_priv = NULL;
143 fields[3].device = jtag_info->chain_pos;
144 fields[3].num_bits = 1;
145 fields[3].out_value = &nr_w_buf;
146 fields[3].out_mask = NULL;
147 fields[3].in_value = NULL;
148 fields[3].in_check_value = NULL;
149 fields[3].in_check_mask = NULL;
150 fields[3].in_handler = NULL;
151 fields[3].in_handler_priv = NULL;
153 jtag_add_dr_scan(4, fields, -1);
155 fields[1].in_handler_priv = value;
156 fields[1].in_handler = arm_jtag_buf_to_u32;
158 jtag_add_dr_scan(4, fields, -1);
160 #ifdef _DEBUG_INSTRUCTION_EXECUTION_
161 jtag_execute_queue();
162 LOG_DEBUG("addr: 0x%x value: %8.8x", reg_addr, *value);
168 int arm920t_write_cp15_physical(target_t *target, int reg_addr, u32 value)
170 armv4_5_common_t *armv4_5 = target->arch_info;
171 arm7_9_common_t *arm7_9 = armv4_5->arch_info;
172 arm_jtag_t *jtag_info = &arm7_9->jtag_info;
173 scan_field_t fields[4];
174 u8 access_type_buf = 1;
175 u8 reg_addr_buf = reg_addr & 0x3f;
179 buf_set_u32(value_buf, 0, 32, value);
181 jtag_add_end_state(TAP_RTI);
182 arm_jtag_scann(jtag_info, 0xf);
183 arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
185 fields[0].device = jtag_info->chain_pos;
186 fields[0].num_bits = 1;
187 fields[0].out_value = &access_type_buf;
188 fields[0].out_mask = NULL;
189 fields[0].in_value = NULL;
190 fields[0].in_check_value = NULL;
191 fields[0].in_check_mask = NULL;
192 fields[0].in_handler = NULL;
193 fields[0].in_handler_priv = NULL;
195 fields[1].device = jtag_info->chain_pos;
196 fields[1].num_bits = 32;
197 fields[1].out_value = value_buf;
198 fields[1].out_mask = NULL;
199 fields[1].in_value = NULL;
200 fields[1].in_check_value = NULL;
201 fields[1].in_check_mask = NULL;
202 fields[1].in_handler = NULL;
203 fields[1].in_handler_priv = NULL;
205 fields[2].device = jtag_info->chain_pos;
206 fields[2].num_bits = 6;
207 fields[2].out_value = ®_addr_buf;
208 fields[2].out_mask = NULL;
209 fields[2].in_value = NULL;
210 fields[2].in_check_value = NULL;
211 fields[2].in_check_mask = NULL;
212 fields[2].in_handler = NULL;
213 fields[2].in_handler_priv = NULL;
215 fields[3].device = jtag_info->chain_pos;
216 fields[3].num_bits = 1;
217 fields[3].out_value = &nr_w_buf;
218 fields[3].out_mask = NULL;
219 fields[3].in_value = NULL;
220 fields[3].in_check_value = NULL;
221 fields[3].in_check_mask = NULL;
222 fields[3].in_handler = NULL;
223 fields[3].in_handler_priv = NULL;
225 jtag_add_dr_scan(4, fields, -1);
227 #ifdef _DEBUG_INSTRUCTION_EXECUTION_
228 LOG_DEBUG("addr: 0x%x value: %8.8x", reg_addr, value);
234 int arm920t_execute_cp15(target_t *target, u32 cp15_opcode, u32 arm_opcode)
237 armv4_5_common_t *armv4_5 = target->arch_info;
238 arm7_9_common_t *arm7_9 = armv4_5->arch_info;
239 arm_jtag_t *jtag_info = &arm7_9->jtag_info;
240 scan_field_t fields[4];
241 u8 access_type_buf = 0; /* interpreted access */
242 u8 reg_addr_buf = 0x0;
244 u8 cp15_opcode_buf[4];
246 jtag_add_end_state(TAP_RTI);
247 arm_jtag_scann(jtag_info, 0xf);
248 arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
250 buf_set_u32(cp15_opcode_buf, 0, 32, cp15_opcode);
252 fields[0].device = jtag_info->chain_pos;
253 fields[0].num_bits = 1;
254 fields[0].out_value = &access_type_buf;
255 fields[0].out_mask = NULL;
256 fields[0].in_value = NULL;
257 fields[0].in_check_value = NULL;
258 fields[0].in_check_mask = NULL;
259 fields[0].in_handler = NULL;
260 fields[0].in_handler_priv = NULL;
262 fields[1].device = jtag_info->chain_pos;
263 fields[1].num_bits = 32;
264 fields[1].out_value = cp15_opcode_buf;
265 fields[1].out_mask = NULL;
266 fields[1].in_value = NULL;
267 fields[1].in_check_value = NULL;
268 fields[1].in_check_mask = NULL;
269 fields[1].in_handler = NULL;
270 fields[1].in_handler_priv = NULL;
272 fields[2].device = jtag_info->chain_pos;
273 fields[2].num_bits = 6;
274 fields[2].out_value = ®_addr_buf;
275 fields[2].out_mask = NULL;
276 fields[2].in_value = NULL;
277 fields[2].in_check_value = NULL;
278 fields[2].in_check_mask = NULL;
279 fields[2].in_handler = NULL;
280 fields[2].in_handler_priv = NULL;
282 fields[3].device = jtag_info->chain_pos;
283 fields[3].num_bits = 1;
284 fields[3].out_value = &nr_w_buf;
285 fields[3].out_mask = NULL;
286 fields[3].in_value = NULL;
287 fields[3].in_check_value = NULL;
288 fields[3].in_check_mask = NULL;
289 fields[3].in_handler = NULL;
290 fields[3].in_handler_priv = NULL;
292 jtag_add_dr_scan(4, fields, -1);
294 arm9tdmi_clock_out(jtag_info, arm_opcode, 0, NULL, 0);
295 arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
296 arm7_9_execute_sys_speed(target);
298 if ((retval = jtag_execute_queue()) != ERROR_OK)
300 LOG_ERROR("failed executing JTAG queue, exiting");
307 int arm920t_read_cp15_interpreted(target_t *target, u32 cp15_opcode, u32 address, u32 *value)
309 armv4_5_common_t *armv4_5 = target->arch_info;
314 /* load address into R1 */
316 arm9tdmi_write_core_regs(target, 0x2, regs);
318 /* read-modify-write CP15 test state register
319 * to enable interpreted access mode */
320 arm920t_read_cp15_physical(target, 0x1e, &cp15c15);
321 jtag_execute_queue();
322 cp15c15 |= 1; /* set interpret mode */
323 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
325 /* execute CP15 instruction and ARM load (reading from coprocessor) */
326 arm920t_execute_cp15(target, cp15_opcode, ARMV4_5_LDR(0, 1));
328 /* disable interpreted access mode */
329 cp15c15 &= ~1U; /* clear interpret mode */
330 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
332 /* retrieve value from R0 */
334 arm9tdmi_read_core_regs(target, 0x1, regs_p);
335 jtag_execute_queue();
337 #ifdef _DEBUG_INSTRUCTION_EXECUTION_
338 LOG_DEBUG("cp15_opcode: %8.8x, address: %8.8x, value: %8.8x", cp15_opcode, address, *value);
341 if (armv4_5_mode_to_number(armv4_5->core_mode)==-1)
344 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 0).dirty = 1;
345 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 1).dirty = 1;
350 int arm920t_write_cp15_interpreted(target_t *target, u32 cp15_opcode, u32 value, u32 address)
353 armv4_5_common_t *armv4_5 = target->arch_info;
356 /* load value, address into R0, R1 */
359 arm9tdmi_write_core_regs(target, 0x3, regs);
361 /* read-modify-write CP15 test state register
362 * to enable interpreted access mode */
363 arm920t_read_cp15_physical(target, 0x1e, &cp15c15);
364 jtag_execute_queue();
365 cp15c15 |= 1; /* set interpret mode */
366 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
368 /* execute CP15 instruction and ARM store (writing to coprocessor) */
369 arm920t_execute_cp15(target, cp15_opcode, ARMV4_5_STR(0, 1));
371 /* disable interpreted access mode */
372 cp15c15 &= ~1U; /* set interpret mode */
373 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
375 #ifdef _DEBUG_INSTRUCTION_EXECUTION_
376 LOG_DEBUG("cp15_opcode: %8.8x, value: %8.8x, address: %8.8x", cp15_opcode, value, address);
379 if (armv4_5_mode_to_number(armv4_5->core_mode)==-1)
382 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 0).dirty = 1;
383 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 1).dirty = 1;
388 u32 arm920t_get_ttb(target_t *target)
393 if ((retval = arm920t_read_cp15_interpreted(target, 0xeebf0f51, 0x0, &ttb)) != ERROR_OK)
399 void arm920t_disable_mmu_caches(target_t *target, int mmu, int d_u_cache, int i_cache)
403 /* read cp15 control register */
404 arm920t_read_cp15_physical(target, 0x2, &cp15_control);
405 jtag_execute_queue();
408 cp15_control &= ~0x1U;
411 cp15_control &= ~0x4U;
414 cp15_control &= ~0x1000U;
416 arm920t_write_cp15_physical(target, 0x2, cp15_control);
419 void arm920t_enable_mmu_caches(target_t *target, int mmu, int d_u_cache, int i_cache)
423 /* read cp15 control register */
424 arm920t_read_cp15_physical(target, 0x2, &cp15_control);
425 jtag_execute_queue();
428 cp15_control |= 0x1U;
431 cp15_control |= 0x4U;
434 cp15_control |= 0x1000U;
436 arm920t_write_cp15_physical(target, 0x2, cp15_control);
439 void arm920t_post_debug_entry(target_t *target)
442 armv4_5_common_t *armv4_5 = target->arch_info;
443 arm7_9_common_t *arm7_9 = armv4_5->arch_info;
444 arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
445 arm920t_common_t *arm920t = arm9tdmi->arch_info;
447 /* examine cp15 control reg */
448 arm920t_read_cp15_physical(target, 0x2, &arm920t->cp15_control_reg);
449 jtag_execute_queue();
450 LOG_DEBUG("cp15_control_reg: %8.8x", arm920t->cp15_control_reg);
452 if (arm920t->armv4_5_mmu.armv4_5_cache.ctype == -1)
455 /* identify caches */
456 arm920t_read_cp15_physical(target, 0x1, &cache_type_reg);
457 jtag_execute_queue();
458 armv4_5_identify_cache(cache_type_reg, &arm920t->armv4_5_mmu.armv4_5_cache);
461 arm920t->armv4_5_mmu.mmu_enabled = (arm920t->cp15_control_reg & 0x1U) ? 1 : 0;
462 arm920t->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled = (arm920t->cp15_control_reg & 0x4U) ? 1 : 0;
463 arm920t->armv4_5_mmu.armv4_5_cache.i_cache_enabled = (arm920t->cp15_control_reg & 0x1000U) ? 1 : 0;
465 /* save i/d fault status and address register */
466 arm920t_read_cp15_interpreted(target, 0xee150f10, 0x0, &arm920t->d_fsr);
467 arm920t_read_cp15_interpreted(target, 0xee150f30, 0x0, &arm920t->i_fsr);
468 arm920t_read_cp15_interpreted(target, 0xee160f10, 0x0, &arm920t->d_far);
469 arm920t_read_cp15_interpreted(target, 0xee160f30, 0x0, &arm920t->i_far);
471 LOG_DEBUG("D FSR: 0x%8.8x, D FAR: 0x%8.8x, I FSR: 0x%8.8x, I FAR: 0x%8.8x",
472 arm920t->d_fsr, arm920t->d_far, arm920t->i_fsr, arm920t->i_far);
474 if (arm920t->preserve_cache)
476 /* read-modify-write CP15 test state register
477 * to disable I/D-cache linefills */
478 arm920t_read_cp15_physical(target, 0x1e, &cp15c15);
479 jtag_execute_queue();
481 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
485 void arm920t_pre_restore_context(target_t *target)
488 armv4_5_common_t *armv4_5 = target->arch_info;
489 arm7_9_common_t *arm7_9 = armv4_5->arch_info;
490 arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
491 arm920t_common_t *arm920t = arm9tdmi->arch_info;
493 /* restore i/d fault status and address register */
494 arm920t_write_cp15_interpreted(target, 0xee050f10, arm920t->d_fsr, 0x0);
495 arm920t_write_cp15_interpreted(target, 0xee050f30, arm920t->i_fsr, 0x0);
496 arm920t_write_cp15_interpreted(target, 0xee060f10, arm920t->d_far, 0x0);
497 arm920t_write_cp15_interpreted(target, 0xee060f30, arm920t->i_far, 0x0);
499 /* read-modify-write CP15 test state register
500 * to reenable I/D-cache linefills */
501 if (arm920t->preserve_cache)
503 arm920t_read_cp15_physical(target, 0x1e, &cp15c15);
504 jtag_execute_queue();
506 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
510 int arm920t_get_arch_pointers(target_t *target, armv4_5_common_t **armv4_5_p, arm7_9_common_t **arm7_9_p, arm9tdmi_common_t **arm9tdmi_p, arm920t_common_t **arm920t_p)
512 armv4_5_common_t *armv4_5 = target->arch_info;
513 arm7_9_common_t *arm7_9;
514 arm9tdmi_common_t *arm9tdmi;
515 arm920t_common_t *arm920t;
517 if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
522 arm7_9 = armv4_5->arch_info;
523 if (arm7_9->common_magic != ARM7_9_COMMON_MAGIC)
528 arm9tdmi = arm7_9->arch_info;
529 if (arm9tdmi->common_magic != ARM9TDMI_COMMON_MAGIC)
534 arm920t = arm9tdmi->arch_info;
535 if (arm920t->common_magic != ARM920T_COMMON_MAGIC)
540 *armv4_5_p = armv4_5;
542 *arm9tdmi_p = arm9tdmi;
543 *arm920t_p = arm920t;
548 int arm920t_arch_state(struct target_s *target)
550 armv4_5_common_t *armv4_5 = target->arch_info;
551 arm7_9_common_t *arm7_9 = armv4_5->arch_info;
552 arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
553 arm920t_common_t *arm920t = arm9tdmi->arch_info;
557 "disabled", "enabled"
560 if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
562 LOG_ERROR("BUG: called for a non-ARMv4/5 target");
566 LOG_USER( "target halted in %s state due to %s, current mode: %s\n"
567 "cpsr: 0x%8.8x pc: 0x%8.8x\n"
568 "MMU: %s, D-Cache: %s, I-Cache: %s",
569 armv4_5_state_strings[armv4_5->core_state],
570 Jim_Nvp_value2name_simple(nvp_target_debug_reason, target->debug_reason)->name,
571 armv4_5_mode_strings[armv4_5_mode_to_number(armv4_5->core_mode)],
572 buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 32),
573 buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32),
574 state[arm920t->armv4_5_mmu.mmu_enabled],
575 state[arm920t->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled],
576 state[arm920t->armv4_5_mmu.armv4_5_cache.i_cache_enabled]);
581 int arm920t_read_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer)
585 retval = arm7_9_read_memory(target, address, size, count, buffer);
590 int arm920t_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer)
593 armv4_5_common_t *armv4_5 = target->arch_info;
594 arm7_9_common_t *arm7_9 = armv4_5->arch_info;
595 arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
596 arm920t_common_t *arm920t = arm9tdmi->arch_info;
598 if ((retval = arm7_9_write_memory(target, address, size, count, buffer)) != ERROR_OK)
601 if (((size == 4) || (size == 2)) && (count == 1))
603 if (arm920t->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled)
605 LOG_DEBUG("D-Cache enabled, writing through to main memory");
609 pa = armv4_5_mmu_translate_va(target, &arm920t->armv4_5_mmu, address, &type, &cb, &domain, &ap);
612 /* cacheable & bufferable means write-back region */
614 armv4_5_mmu_write_physical(target, &arm920t->armv4_5_mmu, pa, size, count, buffer);
617 if (arm920t->armv4_5_mmu.armv4_5_cache.i_cache_enabled)
619 LOG_DEBUG("I-Cache enabled, invalidating affected I-Cache line");
620 arm920t_write_cp15_interpreted(target, 0xee070f35, 0x0, address);
627 int arm920t_soft_reset_halt(struct target_s *target)
629 int retval = ERROR_OK;
630 armv4_5_common_t *armv4_5 = target->arch_info;
631 arm7_9_common_t *arm7_9 = armv4_5->arch_info;
632 arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
633 arm920t_common_t *arm920t = arm9tdmi->arch_info;
634 reg_t *dbg_stat = &arm7_9->eice_cache->reg_list[EICE_DBG_STAT];
636 if((retval = target_halt(target)) != ERROR_OK)
641 long long then=timeval_ms();
643 while (!(timeout=((timeval_ms()-then)>1000)))
645 if (buf_get_u32(dbg_stat->value, EICE_DBG_STATUS_DBGACK, 1) == 0)
647 embeddedice_read_reg(dbg_stat);
648 if((retval = jtag_execute_queue()) != ERROR_OK)
658 /* do not eat all CPU, time out after 1 se*/
667 LOG_ERROR("Failed to halt CPU after 1 sec");
668 return ERROR_TARGET_TIMEOUT;
671 target->state = TARGET_HALTED;
673 /* SVC, ARM state, IRQ and FIQ disabled */
674 buf_set_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 8, 0xd3);
675 armv4_5->core_cache->reg_list[ARMV4_5_CPSR].dirty = 1;
676 armv4_5->core_cache->reg_list[ARMV4_5_CPSR].valid = 1;
678 /* start fetching from 0x0 */
679 buf_set_u32(armv4_5->core_cache->reg_list[15].value, 0, 32, 0x0);
680 armv4_5->core_cache->reg_list[15].dirty = 1;
681 armv4_5->core_cache->reg_list[15].valid = 1;
683 armv4_5->core_mode = ARMV4_5_MODE_SVC;
684 armv4_5->core_state = ARMV4_5_STATE_ARM;
686 arm920t_disable_mmu_caches(target, 1, 1, 1);
687 arm920t->armv4_5_mmu.mmu_enabled = 0;
688 arm920t->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled = 0;
689 arm920t->armv4_5_mmu.armv4_5_cache.i_cache_enabled = 0;
691 if((retval = target_call_event_callbacks(target, TARGET_EVENT_HALTED)) != ERROR_OK)
699 int arm920t_init_target(struct command_context_s *cmd_ctx, struct target_s *target)
701 arm9tdmi_init_target(cmd_ctx, target);
707 int arm920t_quit(void)
713 int arm920t_init_arch_info(target_t *target, arm920t_common_t *arm920t, int chain_pos, const char *variant)
715 arm9tdmi_common_t *arm9tdmi = &arm920t->arm9tdmi_common;
716 arm7_9_common_t *arm7_9 = &arm9tdmi->arm7_9_common;
718 /* initialize arm9tdmi specific info (including arm7_9 and armv4_5)
720 arm9tdmi_init_arch_info(target, arm9tdmi, chain_pos, variant);
722 arm9tdmi->arch_info = arm920t;
723 arm920t->common_magic = ARM920T_COMMON_MAGIC;
725 arm7_9->post_debug_entry = arm920t_post_debug_entry;
726 arm7_9->pre_restore_context = arm920t_pre_restore_context;
728 arm920t->armv4_5_mmu.armv4_5_cache.ctype = -1;
729 arm920t->armv4_5_mmu.get_ttb = arm920t_get_ttb;
730 arm920t->armv4_5_mmu.read_memory = arm7_9_read_memory;
731 arm920t->armv4_5_mmu.write_memory = arm7_9_write_memory;
732 arm920t->armv4_5_mmu.disable_mmu_caches = arm920t_disable_mmu_caches;
733 arm920t->armv4_5_mmu.enable_mmu_caches = arm920t_enable_mmu_caches;
734 arm920t->armv4_5_mmu.has_tiny_pages = 1;
735 arm920t->armv4_5_mmu.mmu_enabled = 0;
737 /* disabling linefills leads to lockups, so keep them enabled for now
738 * this doesn't affect correctness, but might affect timing issues, if
739 * important data is evicted from the cache during the debug session
741 arm920t->preserve_cache = 0;
743 /* override hw single-step capability from ARM9TDMI */
744 arm7_9->has_single_step = 1;
749 int arm920t_target_create(struct target_s *target, Jim_Interp *interp)
751 arm920t_common_t *arm920t = calloc(1,sizeof(arm920t_common_t));
753 arm920t_init_arch_info(target, arm920t, target->chain_position, target->variant);
758 int arm920t_register_commands(struct command_context_s *cmd_ctx)
761 command_t *arm920t_cmd;
764 retval = arm9tdmi_register_commands(cmd_ctx);
766 arm920t_cmd = register_command(cmd_ctx, NULL, "arm920t", NULL, COMMAND_ANY, "arm920t specific commands");
768 register_command(cmd_ctx, arm920t_cmd, "cp15", arm920t_handle_cp15_command, COMMAND_EXEC, "display/modify cp15 register <num> [value]");
769 register_command(cmd_ctx, arm920t_cmd, "cp15i", arm920t_handle_cp15i_command, COMMAND_EXEC, "display/modify cp15 (interpreted access) <opcode> [value] [address]");
770 register_command(cmd_ctx, arm920t_cmd, "cache_info", arm920t_handle_cache_info_command, COMMAND_EXEC, "display information about target caches");
771 register_command(cmd_ctx, arm920t_cmd, "virt2phys", arm920t_handle_virt2phys_command, COMMAND_EXEC, "translate va to pa <va>");
773 register_command(cmd_ctx, arm920t_cmd, "mdw_phys", arm920t_handle_md_phys_command, COMMAND_EXEC, "display memory words <physical addr> [count]");
774 register_command(cmd_ctx, arm920t_cmd, "mdh_phys", arm920t_handle_md_phys_command, COMMAND_EXEC, "display memory half-words <physical addr> [count]");
775 register_command(cmd_ctx, arm920t_cmd, "mdb_phys", arm920t_handle_md_phys_command, COMMAND_EXEC, "display memory bytes <physical addr> [count]");
777 register_command(cmd_ctx, arm920t_cmd, "mww_phys", arm920t_handle_mw_phys_command, COMMAND_EXEC, "write memory word <physical addr> <value>");
778 register_command(cmd_ctx, arm920t_cmd, "mwh_phys", arm920t_handle_mw_phys_command, COMMAND_EXEC, "write memory half-word <physical addr> <value>");
779 register_command(cmd_ctx, arm920t_cmd, "mwb_phys", arm920t_handle_mw_phys_command, COMMAND_EXEC, "write memory byte <physical addr> <value>");
781 register_command(cmd_ctx, arm920t_cmd, "read_cache", arm920t_handle_read_cache_command, COMMAND_EXEC, "display I/D cache content");
782 register_command(cmd_ctx, arm920t_cmd, "read_mmu", arm920t_handle_read_mmu_command, COMMAND_EXEC, "display I/D mmu content");
787 int arm920t_handle_read_cache_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
789 int retval = ERROR_OK;
790 target_t *target = get_current_target(cmd_ctx);
791 armv4_5_common_t *armv4_5;
792 arm7_9_common_t *arm7_9;
793 arm9tdmi_common_t *arm9tdmi;
794 arm920t_common_t *arm920t;
795 arm_jtag_t *jtag_info;
797 u32 cp15_ctrl, cp15_ctrl_saved;
800 u32 C15_C_D_Ind, C15_C_I_Ind;
803 arm920t_cache_line_t d_cache[8][64], i_cache[8][64];
808 command_print(cmd_ctx, "usage: arm920t read_cache <filename>");
812 if ((output = fopen(args[0], "w")) == NULL)
814 LOG_DEBUG("error opening cache content file");
818 for (i = 0; i < 16; i++)
819 regs_p[i] = ®s[i];
821 if (arm920t_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm920t) != ERROR_OK)
823 command_print(cmd_ctx, "current target isn't an ARM920t target");
827 jtag_info = &arm7_9->jtag_info;
829 /* disable MMU and Caches */
830 arm920t_read_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0x1, 0), &cp15_ctrl);
831 if((retval = jtag_execute_queue()) != ERROR_OK)
835 cp15_ctrl_saved = cp15_ctrl;
836 cp15_ctrl &= ~(ARMV4_5_MMU_ENABLED | ARMV4_5_D_U_CACHE_ENABLED | ARMV4_5_I_CACHE_ENABLED);
837 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0x1, 0), cp15_ctrl);
839 /* read CP15 test state register */
840 arm920t_read_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), &cp15c15);
841 jtag_execute_queue();
843 /* read DCache content */
844 fprintf(output, "DCache:\n");
846 /* go through segments 0 to nsets (8 on ARM920T, 4 on ARM922T) */
847 for (segment = 0; segment < arm920t->armv4_5_mmu.armv4_5_cache.d_u_size.nsets; segment++)
849 fprintf(output, "\nsegment: %i\n----------", segment);
851 /* Ra: r0 = SBZ(31:8):segment(7:5):SBZ(4:0) */
852 regs[0] = 0x0 | (segment << 5);
853 arm9tdmi_write_core_regs(target, 0x1, regs);
855 /* set interpret mode */
857 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
859 /* D CAM Read, loads current victim into C15.C.D.Ind */
860 arm920t_execute_cp15(target, ARMV4_5_MCR(15,2,0,15,6,2), ARMV4_5_LDR(1, 0));
862 /* read current victim */
863 arm920t_read_cp15_physical(target, 0x3d, &C15_C_D_Ind);
865 /* clear interpret mode */
867 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
869 for (index = 0; index < 64; index++)
871 /* Ra: r0 = index(31:26):SBZ(25:8):segment(7:5):SBZ(4:0) */
872 regs[0] = 0x0 | (segment << 5) | (index << 26);
873 arm9tdmi_write_core_regs(target, 0x1, regs);
875 /* set interpret mode */
877 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
879 /* Write DCache victim */
880 arm920t_execute_cp15(target, ARMV4_5_MCR(15,0,0,9,1,0), ARMV4_5_LDR(1, 0));
883 arm920t_execute_cp15(target, ARMV4_5_MCR(15,2,0,15,10,2), ARMV4_5_LDMIA(0, 0x1fe, 0, 0));
886 arm920t_execute_cp15(target, ARMV4_5_MCR(15,2,0,15,6,2), ARMV4_5_LDR(9, 0));
888 /* clear interpret mode */
890 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
892 /* read D RAM and CAM content */
893 arm9tdmi_read_core_regs(target, 0x3fe, regs_p);
894 if((retval = jtag_execute_queue()) != ERROR_OK)
899 d_cache[segment][index].cam = regs[9];
902 regs[9] &= 0xfffffffe;
903 fprintf(output, "\nsegment: %i, index: %i, CAM: 0x%8.8x, content (%s):\n", segment, index, regs[9], (regs[9] & 0x10) ? "valid" : "invalid");
905 for (i = 1; i < 9; i++)
907 d_cache[segment][index].data[i] = regs[i];
908 fprintf(output, "%i: 0x%8.8x\n", i-1, regs[i]);
913 /* Ra: r0 = index(31:26):SBZ(25:8):segment(7:5):SBZ(4:0) */
914 regs[0] = 0x0 | (segment << 5) | (C15_C_D_Ind << 26);
915 arm9tdmi_write_core_regs(target, 0x1, regs);
917 /* set interpret mode */
919 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
921 /* Write DCache victim */
922 arm920t_execute_cp15(target, ARMV4_5_MCR(15,0,0,9,1,0), ARMV4_5_LDR(1, 0));
924 /* clear interpret mode */
926 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
929 /* read ICache content */
930 fprintf(output, "ICache:\n");
932 /* go through segments 0 to nsets (8 on ARM920T, 4 on ARM922T) */
933 for (segment = 0; segment < arm920t->armv4_5_mmu.armv4_5_cache.d_u_size.nsets; segment++)
935 fprintf(output, "segment: %i\n----------", segment);
937 /* Ra: r0 = SBZ(31:8):segment(7:5):SBZ(4:0) */
938 regs[0] = 0x0 | (segment << 5);
939 arm9tdmi_write_core_regs(target, 0x1, regs);
941 /* set interpret mode */
943 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
945 /* I CAM Read, loads current victim into C15.C.I.Ind */
946 arm920t_execute_cp15(target, ARMV4_5_MCR(15,2,0,15,5,2), ARMV4_5_LDR(1, 0));
948 /* read current victim */
949 arm920t_read_cp15_physical(target, 0x3b, &C15_C_I_Ind);
951 /* clear interpret mode */
953 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
955 for (index = 0; index < 64; index++)
957 /* Ra: r0 = index(31:26):SBZ(25:8):segment(7:5):SBZ(4:0) */
958 regs[0] = 0x0 | (segment << 5) | (index << 26);
959 arm9tdmi_write_core_regs(target, 0x1, regs);
961 /* set interpret mode */
963 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
965 /* Write ICache victim */
966 arm920t_execute_cp15(target, ARMV4_5_MCR(15,0,0,9,1,1), ARMV4_5_LDR(1, 0));
969 arm920t_execute_cp15(target, ARMV4_5_MCR(15,2,0,15,9,2), ARMV4_5_LDMIA(0, 0x1fe, 0, 0));
972 arm920t_execute_cp15(target, ARMV4_5_MCR(15,2,0,15,5,2), ARMV4_5_LDR(9, 0));
974 /* clear interpret mode */
976 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
978 /* read I RAM and CAM content */
979 arm9tdmi_read_core_regs(target, 0x3fe, regs_p);
980 if((retval = jtag_execute_queue()) != ERROR_OK)
985 i_cache[segment][index].cam = regs[9];
988 regs[9] &= 0xfffffffe;
989 fprintf(output, "\nsegment: %i, index: %i, CAM: 0x%8.8x, content (%s):\n", segment, index, regs[9], (regs[9] & 0x10) ? "valid" : "invalid");
991 for (i = 1; i < 9; i++)
993 i_cache[segment][index].data[i] = regs[i];
994 fprintf(output, "%i: 0x%8.8x\n", i-1, regs[i]);
1000 /* Ra: r0 = index(31:26):SBZ(25:8):segment(7:5):SBZ(4:0) */
1001 regs[0] = 0x0 | (segment << 5) | (C15_C_D_Ind << 26);
1002 arm9tdmi_write_core_regs(target, 0x1, regs);
1004 /* set interpret mode */
1006 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
1008 /* Write ICache victim */
1009 arm920t_execute_cp15(target, ARMV4_5_MCR(15,0,0,9,1,1), ARMV4_5_LDR(1, 0));
1011 /* clear interpret mode */
1013 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
1016 /* restore CP15 MMU and Cache settings */
1017 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0x1, 0), cp15_ctrl_saved);
1019 command_print(cmd_ctx, "cache content successfully output to %s", args[0]);
1023 if (armv4_5_mode_to_number(armv4_5->core_mode)==-1)
1026 /* mark registers dirty. */
1027 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 0).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 0).valid;
1028 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 1).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 1).valid;
1029 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 2).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 2).valid;
1030 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 3).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 3).valid;
1031 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 4).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 4).valid;
1032 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 5).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 5).valid;
1033 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 6).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 6).valid;
1034 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 7).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 7).valid;
1035 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 8).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 8).valid;
1036 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 9).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 9).valid;
1041 int arm920t_handle_read_mmu_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1043 int retval = ERROR_OK;
1044 target_t *target = get_current_target(cmd_ctx);
1045 armv4_5_common_t *armv4_5;
1046 arm7_9_common_t *arm7_9;
1047 arm9tdmi_common_t *arm9tdmi;
1048 arm920t_common_t *arm920t;
1049 arm_jtag_t *jtag_info;
1051 u32 cp15_ctrl, cp15_ctrl_saved;
1056 u32 Dlockdown, Ilockdown;
1057 arm920t_tlb_entry_t d_tlb[64], i_tlb[64];
1062 command_print(cmd_ctx, "usage: arm920t read_mmu <filename>");
1066 if ((output = fopen(args[0], "w")) == NULL)
1068 LOG_DEBUG("error opening mmu content file");
1072 for (i = 0; i < 16; i++)
1073 regs_p[i] = ®s[i];
1075 if (arm920t_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm920t) != ERROR_OK)
1077 command_print(cmd_ctx, "current target isn't an ARM920t target");
1081 jtag_info = &arm7_9->jtag_info;
1083 /* disable MMU and Caches */
1084 arm920t_read_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0x1, 0), &cp15_ctrl);
1085 if((retval = jtag_execute_queue()) != ERROR_OK)
1089 cp15_ctrl_saved = cp15_ctrl;
1090 cp15_ctrl &= ~(ARMV4_5_MMU_ENABLED | ARMV4_5_D_U_CACHE_ENABLED | ARMV4_5_I_CACHE_ENABLED);
1091 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0x1, 0), cp15_ctrl);
1093 /* read CP15 test state register */
1094 arm920t_read_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), &cp15c15);
1095 if((retval = jtag_execute_queue()) != ERROR_OK)
1100 /* prepare reading D TLB content
1103 /* set interpret mode */
1105 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
1107 /* Read D TLB lockdown */
1108 arm920t_execute_cp15(target, ARMV4_5_MRC(15,0,0,10,0,0), ARMV4_5_LDR(1, 0));
1110 /* clear interpret mode */
1112 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
1114 /* read D TLB lockdown stored to r1 */
1115 arm9tdmi_read_core_regs(target, 0x2, regs_p);
1116 if((retval = jtag_execute_queue()) != ERROR_OK)
1120 Dlockdown = regs[1];
1122 for (victim = 0; victim < 64; victim += 8)
1124 /* new lockdown value: base[31:26]:victim[25:20]:SBZ[19:1]:p[0]
1125 * base remains unchanged, victim goes through entries 0 to 63 */
1126 regs[1] = (Dlockdown & 0xfc000000) | (victim << 20);
1127 arm9tdmi_write_core_regs(target, 0x2, regs);
1129 /* set interpret mode */
1131 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
1133 /* Write D TLB lockdown */
1134 arm920t_execute_cp15(target, ARMV4_5_MCR(15,0,0,10,0,0), ARMV4_5_STR(1, 0));
1136 /* Read D TLB CAM */
1137 arm920t_execute_cp15(target, ARMV4_5_MCR(15,4,0,15,6,4), ARMV4_5_LDMIA(0, 0x3fc, 0, 0));
1139 /* clear interpret mode */
1141 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
1143 /* read D TLB CAM content stored to r2-r9 */
1144 arm9tdmi_read_core_regs(target, 0x3fc, regs_p);
1145 if((retval = jtag_execute_queue()) != ERROR_OK)
1150 for (i = 0; i < 8; i++)
1151 d_tlb[victim + i].cam = regs[i + 2];
1154 for (victim = 0; victim < 64; victim++)
1156 /* new lockdown value: base[31:26]:victim[25:20]:SBZ[19:1]:p[0]
1157 * base remains unchanged, victim goes through entries 0 to 63 */
1158 regs[1] = (Dlockdown & 0xfc000000) | (victim << 20);
1159 arm9tdmi_write_core_regs(target, 0x2, regs);
1161 /* set interpret mode */
1163 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
1165 /* Write D TLB lockdown */
1166 arm920t_execute_cp15(target, ARMV4_5_MCR(15,0,0,10,0,0), ARMV4_5_STR(1, 0));
1168 /* Read D TLB RAM1 */
1169 arm920t_execute_cp15(target, ARMV4_5_MCR(15,4,0,15,10,4), ARMV4_5_LDR(2,0));
1171 /* Read D TLB RAM2 */
1172 arm920t_execute_cp15(target, ARMV4_5_MCR(15,4,0,15,2,5), ARMV4_5_LDR(3,0));
1174 /* clear interpret mode */
1176 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
1178 /* read D TLB RAM content stored to r2 and r3 */
1179 arm9tdmi_read_core_regs(target, 0xc, regs_p);
1180 if((retval = jtag_execute_queue()) != ERROR_OK)
1185 d_tlb[victim].ram1 = regs[2];
1186 d_tlb[victim].ram2 = regs[3];
1189 /* restore D TLB lockdown */
1190 regs[1] = Dlockdown;
1191 arm9tdmi_write_core_regs(target, 0x2, regs);
1193 /* Write D TLB lockdown */
1194 arm920t_execute_cp15(target, ARMV4_5_MCR(15,0,0,10,0,0), ARMV4_5_STR(1, 0));
1196 /* prepare reading I TLB content
1199 /* set interpret mode */
1201 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
1203 /* Read I TLB lockdown */
1204 arm920t_execute_cp15(target, ARMV4_5_MRC(15,0,0,10,0,1), ARMV4_5_LDR(1, 0));
1206 /* clear interpret mode */
1208 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
1210 /* read I TLB lockdown stored to r1 */
1211 arm9tdmi_read_core_regs(target, 0x2, regs_p);
1212 if((retval = jtag_execute_queue()) != ERROR_OK)
1216 Ilockdown = regs[1];
1218 for (victim = 0; victim < 64; victim += 8)
1220 /* new lockdown value: base[31:26]:victim[25:20]:SBZ[19:1]:p[0]
1221 * base remains unchanged, victim goes through entries 0 to 63 */
1222 regs[1] = (Ilockdown & 0xfc000000) | (victim << 20);
1223 arm9tdmi_write_core_regs(target, 0x2, regs);
1225 /* set interpret mode */
1227 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
1229 /* Write I TLB lockdown */
1230 arm920t_execute_cp15(target, ARMV4_5_MCR(15,0,0,10,0,1), ARMV4_5_STR(1, 0));
1232 /* Read I TLB CAM */
1233 arm920t_execute_cp15(target, ARMV4_5_MCR(15,4,0,15,5,4), ARMV4_5_LDMIA(0, 0x3fc, 0, 0));
1235 /* clear interpret mode */
1237 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
1239 /* read I TLB CAM content stored to r2-r9 */
1240 arm9tdmi_read_core_regs(target, 0x3fc, regs_p);
1241 if((retval = jtag_execute_queue()) != ERROR_OK)
1246 for (i = 0; i < 8; i++)
1247 i_tlb[i + victim].cam = regs[i + 2];
1250 for (victim = 0; victim < 64; victim++)
1252 /* new lockdown value: base[31:26]:victim[25:20]:SBZ[19:1]:p[0]
1253 * base remains unchanged, victim goes through entries 0 to 63 */
1254 regs[1] = (Dlockdown & 0xfc000000) | (victim << 20);
1255 arm9tdmi_write_core_regs(target, 0x2, regs);
1257 /* set interpret mode */
1259 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
1261 /* Write I TLB lockdown */
1262 arm920t_execute_cp15(target, ARMV4_5_MCR(15,0,0,10,0,1), ARMV4_5_STR(1, 0));
1264 /* Read I TLB RAM1 */
1265 arm920t_execute_cp15(target, ARMV4_5_MCR(15,4,0,15,9,4), ARMV4_5_LDR(2,0));
1267 /* Read I TLB RAM2 */
1268 arm920t_execute_cp15(target, ARMV4_5_MCR(15,4,0,15,1,5), ARMV4_5_LDR(3,0));
1270 /* clear interpret mode */
1272 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
1274 /* read I TLB RAM content stored to r2 and r3 */
1275 arm9tdmi_read_core_regs(target, 0xc, regs_p);
1276 if((retval = jtag_execute_queue()) != ERROR_OK)
1281 i_tlb[victim].ram1 = regs[2];
1282 i_tlb[victim].ram2 = regs[3];
1285 /* restore I TLB lockdown */
1286 regs[1] = Ilockdown;
1287 arm9tdmi_write_core_regs(target, 0x2, regs);
1289 /* Write I TLB lockdown */
1290 arm920t_execute_cp15(target, ARMV4_5_MCR(15,0,0,10,0,1), ARMV4_5_STR(1, 0));
1292 /* restore CP15 MMU and Cache settings */
1293 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0x1, 0), cp15_ctrl_saved);
1295 /* output data to file */
1296 fprintf(output, "D TLB content:\n");
1297 for (i = 0; i < 64; i++)
1299 fprintf(output, "%i: 0x%8.8x 0x%8.8x 0x%8.8x %s\n", i, d_tlb[i].cam, d_tlb[i].ram1, d_tlb[i].ram2, (d_tlb[i].cam & 0x20) ? "(valid)" : "(invalid)");
1302 fprintf(output, "\n\nI TLB content:\n");
1303 for (i = 0; i < 64; i++)
1305 fprintf(output, "%i: 0x%8.8x 0x%8.8x 0x%8.8x %s\n", i, i_tlb[i].cam, i_tlb[i].ram1, i_tlb[i].ram2, (i_tlb[i].cam & 0x20) ? "(valid)" : "(invalid)");
1308 command_print(cmd_ctx, "mmu content successfully output to %s", args[0]);
1312 if (armv4_5_mode_to_number(armv4_5->core_mode)==-1)
1315 /* mark registers dirty */
1316 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 0).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 0).valid;
1317 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 1).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 1).valid;
1318 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 2).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 2).valid;
1319 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 3).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 3).valid;
1320 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 4).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 4).valid;
1321 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 5).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 5).valid;
1322 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 6).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 6).valid;
1323 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 7).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 7).valid;
1324 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 8).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 8).valid;
1325 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 9).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 9).valid;
1329 int arm920t_handle_cp15_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1332 target_t *target = get_current_target(cmd_ctx);
1333 armv4_5_common_t *armv4_5;
1334 arm7_9_common_t *arm7_9;
1335 arm9tdmi_common_t *arm9tdmi;
1336 arm920t_common_t *arm920t;
1337 arm_jtag_t *jtag_info;
1339 if (arm920t_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm920t) != ERROR_OK)
1341 command_print(cmd_ctx, "current target isn't an ARM920t target");
1345 jtag_info = &arm7_9->jtag_info;
1347 if (target->state != TARGET_HALTED)
1349 command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
1353 /* one or more argument, access a single register (write if second argument is given */
1356 int address = strtoul(args[0], NULL, 0);
1361 if ((retval = arm920t_read_cp15_physical(target, address, &value)) != ERROR_OK)
1363 command_print(cmd_ctx, "couldn't access reg %i", address);
1366 if((retval = jtag_execute_queue()) != ERROR_OK)
1371 command_print(cmd_ctx, "%i: %8.8x", address, value);
1375 u32 value = strtoul(args[1], NULL, 0);
1376 if ((retval = arm920t_write_cp15_physical(target, address, value)) != ERROR_OK)
1378 command_print(cmd_ctx, "couldn't access reg %i", address);
1381 command_print(cmd_ctx, "%i: %8.8x", address, value);
1388 int arm920t_handle_cp15i_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1391 target_t *target = get_current_target(cmd_ctx);
1392 armv4_5_common_t *armv4_5;
1393 arm7_9_common_t *arm7_9;
1394 arm9tdmi_common_t *arm9tdmi;
1395 arm920t_common_t *arm920t;
1396 arm_jtag_t *jtag_info;
1398 if (arm920t_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm920t) != ERROR_OK)
1400 command_print(cmd_ctx, "current target isn't an ARM920t target");
1404 jtag_info = &arm7_9->jtag_info;
1406 if (target->state != TARGET_HALTED)
1408 command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
1412 /* one or more argument, access a single register (write if second argument is given */
1415 u32 opcode = strtoul(args[0], NULL, 0);
1420 if ((retval = arm920t_read_cp15_interpreted(target, opcode, 0x0, &value)) != ERROR_OK)
1422 command_print(cmd_ctx, "couldn't execute %8.8x", opcode);
1426 command_print(cmd_ctx, "%8.8x: %8.8x", opcode, value);
1430 u32 value = strtoul(args[1], NULL, 0);
1431 if ((retval = arm920t_write_cp15_interpreted(target, opcode, value, 0)) != ERROR_OK)
1433 command_print(cmd_ctx, "couldn't execute %8.8x", opcode);
1436 command_print(cmd_ctx, "%8.8x: %8.8x", opcode, value);
1440 u32 value = strtoul(args[1], NULL, 0);
1441 u32 address = strtoul(args[2], NULL, 0);
1442 if ((retval = arm920t_write_cp15_interpreted(target, opcode, value, address)) != ERROR_OK)
1444 command_print(cmd_ctx, "couldn't execute %8.8x", opcode);
1447 command_print(cmd_ctx, "%8.8x: %8.8x %8.8x", opcode, value, address);
1452 command_print(cmd_ctx, "usage: arm920t cp15i <opcode> [value] [address]");
1458 int arm920t_handle_cache_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1460 target_t *target = get_current_target(cmd_ctx);
1461 armv4_5_common_t *armv4_5;
1462 arm7_9_common_t *arm7_9;
1463 arm9tdmi_common_t *arm9tdmi;
1464 arm920t_common_t *arm920t;
1466 if (arm920t_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm920t) != ERROR_OK)
1468 command_print(cmd_ctx, "current target isn't an ARM920t target");
1472 return armv4_5_handle_cache_info_command(cmd_ctx, &arm920t->armv4_5_mmu.armv4_5_cache);
1475 int arm920t_handle_virt2phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc)
1477 target_t *target = get_current_target(cmd_ctx);
1478 armv4_5_common_t *armv4_5;
1479 arm7_9_common_t *arm7_9;
1480 arm9tdmi_common_t *arm9tdmi;
1481 arm920t_common_t *arm920t;
1482 arm_jtag_t *jtag_info;
1484 if (arm920t_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm920t) != ERROR_OK)
1486 command_print(cmd_ctx, "current target isn't an ARM920t target");
1490 jtag_info = &arm7_9->jtag_info;
1492 if (target->state != TARGET_HALTED)
1494 command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
1498 return armv4_5_mmu_handle_virt2phys_command(cmd_ctx, cmd, args, argc, target, &arm920t->armv4_5_mmu);
1501 int arm920t_handle_md_phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc)
1503 target_t *target = get_current_target(cmd_ctx);
1504 armv4_5_common_t *armv4_5;
1505 arm7_9_common_t *arm7_9;
1506 arm9tdmi_common_t *arm9tdmi;
1507 arm920t_common_t *arm920t;
1508 arm_jtag_t *jtag_info;
1510 if (arm920t_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm920t) != ERROR_OK)
1512 command_print(cmd_ctx, "current target isn't an ARM920t target");
1516 jtag_info = &arm7_9->jtag_info;
1518 if (target->state != TARGET_HALTED)
1520 command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
1524 return armv4_5_mmu_handle_md_phys_command(cmd_ctx, cmd, args, argc, target, &arm920t->armv4_5_mmu);
1527 int arm920t_handle_mw_phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc)
1529 target_t *target = get_current_target(cmd_ctx);
1530 armv4_5_common_t *armv4_5;
1531 arm7_9_common_t *arm7_9;
1532 arm9tdmi_common_t *arm9tdmi;
1533 arm920t_common_t *arm920t;
1534 arm_jtag_t *jtag_info;
1536 if (arm920t_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm920t) != ERROR_OK)
1538 command_print(cmd_ctx, "current target isn't an ARM920t target");
1542 jtag_info = &arm7_9->jtag_info;
1544 if (target->state != TARGET_HALTED)
1546 command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
1550 return armv4_5_mmu_handle_mw_phys_command(cmd_ctx, cmd, args, argc, target, &arm920t->armv4_5_mmu);