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 ***************************************************************************/
25 #include "time_support.h"
26 #include "target_type.h"
30 #define _DEBUG_INSTRUCTION_EXECUTION_
34 int arm920t_handle_cp15_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
35 int arm920t_handle_cp15i_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
36 int arm920t_handle_cache_info_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
37 int arm920t_read_phys_memory(struct target_s
*target
, uint32_t address
, uint32_t size
, uint32_t count
, uint8_t *buffer
);
38 int arm920t_write_phys_memory(struct target_s
*target
, uint32_t address
, uint32_t size
, uint32_t count
, uint8_t *buffer
);
40 int arm920t_handle_read_cache_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
41 int arm920t_handle_read_mmu_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
43 /* forward declarations */
44 int arm920t_target_create(struct target_s
*target
, Jim_Interp
*interp
);
45 int arm920t_init_target(struct command_context_s
*cmd_ctx
, struct target_s
*target
);
47 #define ARM920T_CP15_PHYS_ADDR(x, y, z) ((x << 5) | (y << 1) << (z))
49 target_type_t arm920t_target
=
54 .arch_state
= arm920t_arch_state
,
56 .target_request_data
= arm7_9_target_request_data
,
59 .resume
= arm7_9_resume
,
62 .assert_reset
= arm7_9_assert_reset
,
63 .deassert_reset
= arm7_9_deassert_reset
,
64 .soft_reset_halt
= arm920t_soft_reset_halt
,
66 .get_gdb_reg_list
= armv4_5_get_gdb_reg_list
,
68 .read_memory
= arm920t_read_memory
,
69 .write_memory
= arm920t_write_memory
,
70 .read_phys_memory
= arm920t_read_phys_memory
,
71 .write_phys_memory
= arm920t_write_phys_memory
,
72 .bulk_write_memory
= arm7_9_bulk_write_memory
,
73 .checksum_memory
= arm7_9_checksum_memory
,
74 .blank_check_memory
= arm7_9_blank_check_memory
,
76 .run_algorithm
= armv4_5_run_algorithm
,
78 .add_breakpoint
= arm7_9_add_breakpoint
,
79 .remove_breakpoint
= arm7_9_remove_breakpoint
,
80 .add_watchpoint
= arm7_9_add_watchpoint
,
81 .remove_watchpoint
= arm7_9_remove_watchpoint
,
83 .register_commands
= arm920t_register_commands
,
84 .target_create
= arm920t_target_create
,
85 .init_target
= arm920t_init_target
,
86 .examine
= arm9tdmi_examine
,
89 int arm920t_read_cp15_physical(target_t
*target
, int reg_addr
, uint32_t *value
)
91 armv4_5_common_t
*armv4_5
= target
->arch_info
;
92 arm7_9_common_t
*arm7_9
= armv4_5
->arch_info
;
93 arm_jtag_t
*jtag_info
= &arm7_9
->jtag_info
;
94 scan_field_t fields
[4];
95 uint8_t access_type_buf
= 1;
96 uint8_t reg_addr_buf
= reg_addr
& 0x3f;
99 jtag_set_end_state(TAP_IDLE
);
100 arm_jtag_scann(jtag_info
, 0xf);
101 arm_jtag_set_instr(jtag_info
, jtag_info
->intest_instr
, NULL
);
103 fields
[0].tap
= jtag_info
->tap
;
104 fields
[0].num_bits
= 1;
105 fields
[0].out_value
= &access_type_buf
;
106 fields
[0].in_value
= NULL
;
108 fields
[1].tap
= jtag_info
->tap
;
109 fields
[1].num_bits
= 32;
110 fields
[1].out_value
= NULL
;
111 fields
[1].in_value
= NULL
;
113 fields
[2].tap
= jtag_info
->tap
;
114 fields
[2].num_bits
= 6;
115 fields
[2].out_value
= ®_addr_buf
;
116 fields
[2].in_value
= NULL
;
118 fields
[3].tap
= jtag_info
->tap
;
119 fields
[3].num_bits
= 1;
120 fields
[3].out_value
= &nr_w_buf
;
121 fields
[3].in_value
= NULL
;
123 jtag_add_dr_scan(4, fields
, jtag_get_end_state());
125 fields
[1].in_value
= (uint8_t *)value
;
127 jtag_add_dr_scan(4, fields
, jtag_get_end_state());
129 jtag_add_callback(arm_le_to_h_u32
, (jtag_callback_data_t
)value
);
131 #ifdef _DEBUG_INSTRUCTION_EXECUTION_
132 jtag_execute_queue();
133 LOG_DEBUG("addr: 0x%x value: %8.8x", reg_addr
, *value
);
139 int arm920t_write_cp15_physical(target_t
*target
, int reg_addr
, uint32_t value
)
141 armv4_5_common_t
*armv4_5
= target
->arch_info
;
142 arm7_9_common_t
*arm7_9
= armv4_5
->arch_info
;
143 arm_jtag_t
*jtag_info
= &arm7_9
->jtag_info
;
144 scan_field_t fields
[4];
145 uint8_t access_type_buf
= 1;
146 uint8_t reg_addr_buf
= reg_addr
& 0x3f;
147 uint8_t nr_w_buf
= 1;
148 uint8_t value_buf
[4];
150 buf_set_u32(value_buf
, 0, 32, value
);
152 jtag_set_end_state(TAP_IDLE
);
153 arm_jtag_scann(jtag_info
, 0xf);
154 arm_jtag_set_instr(jtag_info
, jtag_info
->intest_instr
, NULL
);
156 fields
[0].tap
= jtag_info
->tap
;
157 fields
[0].num_bits
= 1;
158 fields
[0].out_value
= &access_type_buf
;
159 fields
[0].in_value
= NULL
;
161 fields
[1].tap
= jtag_info
->tap
;
162 fields
[1].num_bits
= 32;
163 fields
[1].out_value
= value_buf
;
164 fields
[1].in_value
= NULL
;
166 fields
[2].tap
= jtag_info
->tap
;
167 fields
[2].num_bits
= 6;
168 fields
[2].out_value
= ®_addr_buf
;
169 fields
[2].in_value
= NULL
;
171 fields
[3].tap
= jtag_info
->tap
;
172 fields
[3].num_bits
= 1;
173 fields
[3].out_value
= &nr_w_buf
;
174 fields
[3].in_value
= NULL
;
176 jtag_add_dr_scan(4, fields
, jtag_get_end_state());
178 #ifdef _DEBUG_INSTRUCTION_EXECUTION_
179 LOG_DEBUG("addr: 0x%x value: %8.8x", reg_addr
, value
);
185 int arm920t_execute_cp15(target_t
*target
, uint32_t cp15_opcode
, uint32_t arm_opcode
)
188 armv4_5_common_t
*armv4_5
= target
->arch_info
;
189 arm7_9_common_t
*arm7_9
= armv4_5
->arch_info
;
190 arm_jtag_t
*jtag_info
= &arm7_9
->jtag_info
;
191 scan_field_t fields
[4];
192 uint8_t access_type_buf
= 0; /* interpreted access */
193 uint8_t reg_addr_buf
= 0x0;
194 uint8_t nr_w_buf
= 0;
195 uint8_t cp15_opcode_buf
[4];
197 jtag_set_end_state(TAP_IDLE
);
198 arm_jtag_scann(jtag_info
, 0xf);
199 arm_jtag_set_instr(jtag_info
, jtag_info
->intest_instr
, NULL
);
201 buf_set_u32(cp15_opcode_buf
, 0, 32, cp15_opcode
);
203 fields
[0].tap
= jtag_info
->tap
;
204 fields
[0].num_bits
= 1;
205 fields
[0].out_value
= &access_type_buf
;
206 fields
[0].in_value
= NULL
;
208 fields
[1].tap
= jtag_info
->tap
;
209 fields
[1].num_bits
= 32;
210 fields
[1].out_value
= cp15_opcode_buf
;
211 fields
[1].in_value
= NULL
;
213 fields
[2].tap
= jtag_info
->tap
;
214 fields
[2].num_bits
= 6;
215 fields
[2].out_value
= ®_addr_buf
;
216 fields
[2].in_value
= NULL
;
218 fields
[3].tap
= jtag_info
->tap
;
219 fields
[3].num_bits
= 1;
220 fields
[3].out_value
= &nr_w_buf
;
221 fields
[3].in_value
= NULL
;
223 jtag_add_dr_scan(4, fields
, jtag_get_end_state());
225 arm9tdmi_clock_out(jtag_info
, arm_opcode
, 0, NULL
, 0);
226 arm9tdmi_clock_out(jtag_info
, ARMV4_5_NOP
, 0, NULL
, 1);
227 retval
= arm7_9_execute_sys_speed(target
);
228 if (retval
!= ERROR_OK
)
231 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
233 LOG_ERROR("failed executing JTAG queue, exiting");
240 int arm920t_read_cp15_interpreted(target_t
*target
, uint32_t cp15_opcode
, uint32_t address
, uint32_t *value
)
242 armv4_5_common_t
*armv4_5
= target
->arch_info
;
245 uint32_t cp15c15
= 0x0;
247 /* load address into R1 */
249 arm9tdmi_write_core_regs(target
, 0x2, regs
);
251 /* read-modify-write CP15 test state register
252 * to enable interpreted access mode */
253 arm920t_read_cp15_physical(target
, 0x1e, &cp15c15
);
254 jtag_execute_queue();
255 cp15c15
|= 1; /* set interpret mode */
256 arm920t_write_cp15_physical(target
, 0x1e, cp15c15
);
258 /* execute CP15 instruction and ARM load (reading from coprocessor) */
259 arm920t_execute_cp15(target
, cp15_opcode
, ARMV4_5_LDR(0, 1));
261 /* disable interpreted access mode */
262 cp15c15
&= ~1U; /* clear interpret mode */
263 arm920t_write_cp15_physical(target
, 0x1e, cp15c15
);
265 /* retrieve value from R0 */
267 arm9tdmi_read_core_regs(target
, 0x1, regs_p
);
268 jtag_execute_queue();
270 #ifdef _DEBUG_INSTRUCTION_EXECUTION_
271 LOG_DEBUG("cp15_opcode: %8.8x, address: %8.8x, value: %8.8x", cp15_opcode
, address
, *value
);
274 if (armv4_5_mode_to_number(armv4_5
->core_mode
)==-1)
277 ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5
->core_mode
, 0).dirty
= 1;
278 ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5
->core_mode
, 1).dirty
= 1;
283 int arm920t_write_cp15_interpreted(target_t
*target
, uint32_t cp15_opcode
, uint32_t value
, uint32_t address
)
285 uint32_t cp15c15
= 0x0;
286 armv4_5_common_t
*armv4_5
= target
->arch_info
;
289 /* load value, address into R0, R1 */
292 arm9tdmi_write_core_regs(target
, 0x3, regs
);
294 /* read-modify-write CP15 test state register
295 * to enable interpreted access mode */
296 arm920t_read_cp15_physical(target
, 0x1e, &cp15c15
);
297 jtag_execute_queue();
298 cp15c15
|= 1; /* set interpret mode */
299 arm920t_write_cp15_physical(target
, 0x1e, cp15c15
);
301 /* execute CP15 instruction and ARM store (writing to coprocessor) */
302 arm920t_execute_cp15(target
, cp15_opcode
, ARMV4_5_STR(0, 1));
304 /* disable interpreted access mode */
305 cp15c15
&= ~1U; /* set interpret mode */
306 arm920t_write_cp15_physical(target
, 0x1e, cp15c15
);
308 #ifdef _DEBUG_INSTRUCTION_EXECUTION_
309 LOG_DEBUG("cp15_opcode: %8.8x, value: %8.8x, address: %8.8x", cp15_opcode
, value
, address
);
312 if (armv4_5_mode_to_number(armv4_5
->core_mode
)==-1)
315 ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5
->core_mode
, 0).dirty
= 1;
316 ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5
->core_mode
, 1).dirty
= 1;
321 uint32_t arm920t_get_ttb(target_t
*target
)
326 if ((retval
= arm920t_read_cp15_interpreted(target
, 0xeebf0f51, 0x0, &ttb
)) != ERROR_OK
)
332 void arm920t_disable_mmu_caches(target_t
*target
, int mmu
, int d_u_cache
, int i_cache
)
334 uint32_t cp15_control
;
336 /* read cp15 control register */
337 arm920t_read_cp15_physical(target
, 0x2, &cp15_control
);
338 jtag_execute_queue();
341 cp15_control
&= ~0x1U
;
344 cp15_control
&= ~0x4U
;
347 cp15_control
&= ~0x1000U
;
349 arm920t_write_cp15_physical(target
, 0x2, cp15_control
);
352 void arm920t_enable_mmu_caches(target_t
*target
, int mmu
, int d_u_cache
, int i_cache
)
354 uint32_t cp15_control
;
356 /* read cp15 control register */
357 arm920t_read_cp15_physical(target
, 0x2, &cp15_control
);
358 jtag_execute_queue();
361 cp15_control
|= 0x1U
;
364 cp15_control
|= 0x4U
;
367 cp15_control
|= 0x1000U
;
369 arm920t_write_cp15_physical(target
, 0x2, cp15_control
);
372 void arm920t_post_debug_entry(target_t
*target
)
375 armv4_5_common_t
*armv4_5
= target
->arch_info
;
376 arm7_9_common_t
*arm7_9
= armv4_5
->arch_info
;
377 arm9tdmi_common_t
*arm9tdmi
= arm7_9
->arch_info
;
378 arm920t_common_t
*arm920t
= arm9tdmi
->arch_info
;
380 /* examine cp15 control reg */
381 arm920t_read_cp15_physical(target
, 0x2, &arm920t
->cp15_control_reg
);
382 jtag_execute_queue();
383 LOG_DEBUG("cp15_control_reg: %8.8" PRIx32
"", arm920t
->cp15_control_reg
);
385 if (arm920t
->armv4_5_mmu
.armv4_5_cache
.ctype
== -1)
387 uint32_t cache_type_reg
;
388 /* identify caches */
389 arm920t_read_cp15_physical(target
, 0x1, &cache_type_reg
);
390 jtag_execute_queue();
391 armv4_5_identify_cache(cache_type_reg
, &arm920t
->armv4_5_mmu
.armv4_5_cache
);
394 arm920t
->armv4_5_mmu
.mmu_enabled
= (arm920t
->cp15_control_reg
& 0x1U
) ? 1 : 0;
395 arm920t
->armv4_5_mmu
.armv4_5_cache
.d_u_cache_enabled
= (arm920t
->cp15_control_reg
& 0x4U
) ? 1 : 0;
396 arm920t
->armv4_5_mmu
.armv4_5_cache
.i_cache_enabled
= (arm920t
->cp15_control_reg
& 0x1000U
) ? 1 : 0;
398 /* save i/d fault status and address register */
399 arm920t_read_cp15_interpreted(target
, 0xee150f10, 0x0, &arm920t
->d_fsr
);
400 arm920t_read_cp15_interpreted(target
, 0xee150f30, 0x0, &arm920t
->i_fsr
);
401 arm920t_read_cp15_interpreted(target
, 0xee160f10, 0x0, &arm920t
->d_far
);
402 arm920t_read_cp15_interpreted(target
, 0xee160f30, 0x0, &arm920t
->i_far
);
404 LOG_DEBUG("D FSR: 0x%8.8" PRIx32
", D FAR: 0x%8.8" PRIx32
", I FSR: 0x%8.8" PRIx32
", I FAR: 0x%8.8" PRIx32
"",
405 arm920t
->d_fsr
, arm920t
->d_far
, arm920t
->i_fsr
, arm920t
->i_far
);
407 if (arm920t
->preserve_cache
)
409 /* read-modify-write CP15 test state register
410 * to disable I/D-cache linefills */
411 arm920t_read_cp15_physical(target
, 0x1e, &cp15c15
);
412 jtag_execute_queue();
414 arm920t_write_cp15_physical(target
, 0x1e, cp15c15
);
418 void arm920t_pre_restore_context(target_t
*target
)
421 armv4_5_common_t
*armv4_5
= target
->arch_info
;
422 arm7_9_common_t
*arm7_9
= armv4_5
->arch_info
;
423 arm9tdmi_common_t
*arm9tdmi
= arm7_9
->arch_info
;
424 arm920t_common_t
*arm920t
= arm9tdmi
->arch_info
;
426 /* restore i/d fault status and address register */
427 arm920t_write_cp15_interpreted(target
, 0xee050f10, arm920t
->d_fsr
, 0x0);
428 arm920t_write_cp15_interpreted(target
, 0xee050f30, arm920t
->i_fsr
, 0x0);
429 arm920t_write_cp15_interpreted(target
, 0xee060f10, arm920t
->d_far
, 0x0);
430 arm920t_write_cp15_interpreted(target
, 0xee060f30, arm920t
->i_far
, 0x0);
432 /* read-modify-write CP15 test state register
433 * to reenable I/D-cache linefills */
434 if (arm920t
->preserve_cache
)
436 arm920t_read_cp15_physical(target
, 0x1e, &cp15c15
);
437 jtag_execute_queue();
439 arm920t_write_cp15_physical(target
, 0x1e, cp15c15
);
443 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
)
445 armv4_5_common_t
*armv4_5
= target
->arch_info
;
446 arm7_9_common_t
*arm7_9
;
447 arm9tdmi_common_t
*arm9tdmi
;
448 arm920t_common_t
*arm920t
;
450 if (armv4_5
->common_magic
!= ARMV4_5_COMMON_MAGIC
)
455 arm7_9
= armv4_5
->arch_info
;
456 if (arm7_9
->common_magic
!= ARM7_9_COMMON_MAGIC
)
461 arm9tdmi
= arm7_9
->arch_info
;
462 if (arm9tdmi
->common_magic
!= ARM9TDMI_COMMON_MAGIC
)
467 arm920t
= arm9tdmi
->arch_info
;
468 if (arm920t
->common_magic
!= ARM920T_COMMON_MAGIC
)
473 *armv4_5_p
= armv4_5
;
475 *arm9tdmi_p
= arm9tdmi
;
476 *arm920t_p
= arm920t
;
481 int arm920t_arch_state(struct target_s
*target
)
483 armv4_5_common_t
*armv4_5
= target
->arch_info
;
484 arm7_9_common_t
*arm7_9
= armv4_5
->arch_info
;
485 arm9tdmi_common_t
*arm9tdmi
= arm7_9
->arch_info
;
486 arm920t_common_t
*arm920t
= arm9tdmi
->arch_info
;
490 "disabled", "enabled"
493 if (armv4_5
->common_magic
!= ARMV4_5_COMMON_MAGIC
)
495 LOG_ERROR("BUG: called for a non-ARMv4/5 target");
499 LOG_USER("target halted in %s state due to %s, current mode: %s\n"
500 "cpsr: 0x%8.8" PRIx32
" pc: 0x%8.8" PRIx32
"\n"
501 "MMU: %s, D-Cache: %s, I-Cache: %s",
502 armv4_5_state_strings
[armv4_5
->core_state
],
503 Jim_Nvp_value2name_simple(nvp_target_debug_reason
, target
->debug_reason
)->name
,
504 armv4_5_mode_strings
[armv4_5_mode_to_number(armv4_5
->core_mode
)],
505 buf_get_u32(armv4_5
->core_cache
->reg_list
[ARMV4_5_CPSR
].value
, 0, 32),
506 buf_get_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32),
507 state
[arm920t
->armv4_5_mmu
.mmu_enabled
],
508 state
[arm920t
->armv4_5_mmu
.armv4_5_cache
.d_u_cache_enabled
],
509 state
[arm920t
->armv4_5_mmu
.armv4_5_cache
.i_cache_enabled
]);
514 int arm920t_read_memory(struct target_s
*target
, uint32_t address
, uint32_t size
, uint32_t count
, uint8_t *buffer
)
518 retval
= arm7_9_read_memory(target
, address
, size
, count
, buffer
);
524 int arm920t_read_phys_memory(struct target_s
*target
, uint32_t address
, uint32_t size
, uint32_t count
, uint8_t *buffer
)
526 armv4_5_common_t
*armv4_5
= target
->arch_info
;
527 arm7_9_common_t
*arm7_9
= armv4_5
->arch_info
;
528 arm9tdmi_common_t
*arm9tdmi
= arm7_9
->arch_info
;
529 arm920t_common_t
*arm920t
= arm9tdmi
->arch_info
;
531 return armv4_5_mmu_read_physical(target
, &arm920t
->armv4_5_mmu
, address
, size
, count
, buffer
);
534 int arm920t_write_phys_memory(struct target_s
*target
, uint32_t address
, uint32_t size
, uint32_t count
, uint8_t *buffer
)
536 armv4_5_common_t
*armv4_5
= target
->arch_info
;
537 arm7_9_common_t
*arm7_9
= armv4_5
->arch_info
;
538 arm9tdmi_common_t
*arm9tdmi
= arm7_9
->arch_info
;
539 arm920t_common_t
*arm920t
= arm9tdmi
->arch_info
;
541 return armv4_5_mmu_write_physical(target
, &arm920t
->armv4_5_mmu
, address
, size
, count
, buffer
);
545 int arm920t_write_memory(struct target_s
*target
, uint32_t address
, uint32_t size
, uint32_t count
, uint8_t *buffer
)
548 armv4_5_common_t
*armv4_5
= target
->arch_info
;
549 arm7_9_common_t
*arm7_9
= armv4_5
->arch_info
;
550 arm9tdmi_common_t
*arm9tdmi
= arm7_9
->arch_info
;
551 arm920t_common_t
*arm920t
= arm9tdmi
->arch_info
;
553 if ((retval
= arm7_9_write_memory(target
, address
, size
, count
, buffer
)) != ERROR_OK
)
556 /* This fn is used to write breakpoints, so we need to make sure that the
557 * datacache is flushed and the instruction cache is invalidated */
558 if (((size
== 4) || (size
== 2)) && (count
== 1))
560 if (arm920t
->armv4_5_mmu
.armv4_5_cache
.d_u_cache_enabled
)
562 LOG_DEBUG("D-Cache enabled, flush and invalidate cache line");
563 /* MCR p15,0,Rd,c7,c10,2 */
564 retval
= arm920t_write_cp15_interpreted(target
, 0xee070f5e, 0x0, address
);
565 if (retval
!= ERROR_OK
)
569 if (arm920t
->armv4_5_mmu
.armv4_5_cache
.i_cache_enabled
)
571 LOG_DEBUG("I-Cache enabled, invalidating affected I-Cache line");
572 retval
= arm920t_write_cp15_interpreted(target
, 0xee070f35, 0x0, address
);
573 if (retval
!= ERROR_OK
)
581 int arm920t_soft_reset_halt(struct target_s
*target
)
583 int retval
= ERROR_OK
;
584 armv4_5_common_t
*armv4_5
= target
->arch_info
;
585 arm7_9_common_t
*arm7_9
= armv4_5
->arch_info
;
586 arm9tdmi_common_t
*arm9tdmi
= arm7_9
->arch_info
;
587 arm920t_common_t
*arm920t
= arm9tdmi
->arch_info
;
588 reg_t
*dbg_stat
= &arm7_9
->eice_cache
->reg_list
[EICE_DBG_STAT
];
590 if ((retval
= target_halt(target
)) != ERROR_OK
)
595 long long then
= timeval_ms();
597 while (!(timeout
= ((timeval_ms()-then
) > 1000)))
599 if (buf_get_u32(dbg_stat
->value
, EICE_DBG_STATUS_DBGACK
, 1) == 0)
601 embeddedice_read_reg(dbg_stat
);
602 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
610 if (debug_level
>= 3)
612 /* do not eat all CPU, time out after 1 se*/
621 LOG_ERROR("Failed to halt CPU after 1 sec");
622 return ERROR_TARGET_TIMEOUT
;
625 target
->state
= TARGET_HALTED
;
627 /* SVC, ARM state, IRQ and FIQ disabled */
628 buf_set_u32(armv4_5
->core_cache
->reg_list
[ARMV4_5_CPSR
].value
, 0, 8, 0xd3);
629 armv4_5
->core_cache
->reg_list
[ARMV4_5_CPSR
].dirty
= 1;
630 armv4_5
->core_cache
->reg_list
[ARMV4_5_CPSR
].valid
= 1;
632 /* start fetching from 0x0 */
633 buf_set_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32, 0x0);
634 armv4_5
->core_cache
->reg_list
[15].dirty
= 1;
635 armv4_5
->core_cache
->reg_list
[15].valid
= 1;
637 armv4_5
->core_mode
= ARMV4_5_MODE_SVC
;
638 armv4_5
->core_state
= ARMV4_5_STATE_ARM
;
640 arm920t_disable_mmu_caches(target
, 1, 1, 1);
641 arm920t
->armv4_5_mmu
.mmu_enabled
= 0;
642 arm920t
->armv4_5_mmu
.armv4_5_cache
.d_u_cache_enabled
= 0;
643 arm920t
->armv4_5_mmu
.armv4_5_cache
.i_cache_enabled
= 0;
645 if ((retval
= target_call_event_callbacks(target
, TARGET_EVENT_HALTED
)) != ERROR_OK
)
653 int arm920t_init_target(struct command_context_s
*cmd_ctx
, struct target_s
*target
)
655 arm9tdmi_init_target(cmd_ctx
, target
);
660 int arm920t_init_arch_info(target_t
*target
, arm920t_common_t
*arm920t
, jtag_tap_t
*tap
)
662 arm9tdmi_common_t
*arm9tdmi
= &arm920t
->arm9tdmi_common
;
663 arm7_9_common_t
*arm7_9
= &arm9tdmi
->arm7_9_common
;
665 /* initialize arm9tdmi specific info (including arm7_9 and armv4_5)
667 arm9tdmi_init_arch_info(target
, arm9tdmi
, tap
);
669 arm9tdmi
->arch_info
= arm920t
;
670 arm920t
->common_magic
= ARM920T_COMMON_MAGIC
;
672 arm7_9
->post_debug_entry
= arm920t_post_debug_entry
;
673 arm7_9
->pre_restore_context
= arm920t_pre_restore_context
;
675 arm920t
->armv4_5_mmu
.armv4_5_cache
.ctype
= -1;
676 arm920t
->armv4_5_mmu
.get_ttb
= arm920t_get_ttb
;
677 arm920t
->armv4_5_mmu
.read_memory
= arm7_9_read_memory
;
678 arm920t
->armv4_5_mmu
.write_memory
= arm7_9_write_memory
;
679 arm920t
->armv4_5_mmu
.disable_mmu_caches
= arm920t_disable_mmu_caches
;
680 arm920t
->armv4_5_mmu
.enable_mmu_caches
= arm920t_enable_mmu_caches
;
681 arm920t
->armv4_5_mmu
.has_tiny_pages
= 1;
682 arm920t
->armv4_5_mmu
.mmu_enabled
= 0;
684 /* disabling linefills leads to lockups, so keep them enabled for now
685 * this doesn't affect correctness, but might affect timing issues, if
686 * important data is evicted from the cache during the debug session
688 arm920t
->preserve_cache
= 0;
690 /* override hw single-step capability from ARM9TDMI */
691 arm7_9
->has_single_step
= 1;
696 int arm920t_target_create(struct target_s
*target
, Jim_Interp
*interp
)
698 arm920t_common_t
*arm920t
= calloc(1,sizeof(arm920t_common_t
));
700 arm920t_init_arch_info(target
, arm920t
, target
->tap
);
705 int arm920t_register_commands(struct command_context_s
*cmd_ctx
)
708 command_t
*arm920t_cmd
;
711 retval
= arm9tdmi_register_commands(cmd_ctx
);
713 arm920t_cmd
= register_command(cmd_ctx
, NULL
, "arm920t", NULL
, COMMAND_ANY
, "arm920t specific commands");
715 register_command(cmd_ctx
, arm920t_cmd
, "cp15", arm920t_handle_cp15_command
, COMMAND_EXEC
, "display/modify cp15 register <num> [value]");
716 register_command(cmd_ctx
, arm920t_cmd
, "cp15i", arm920t_handle_cp15i_command
, COMMAND_EXEC
, "display/modify cp15 (interpreted access) <opcode> [value] [address]");
717 register_command(cmd_ctx
, arm920t_cmd
, "cache_info", arm920t_handle_cache_info_command
, COMMAND_EXEC
, "display information about target caches");
719 register_command(cmd_ctx
, arm920t_cmd
, "read_cache", arm920t_handle_read_cache_command
, COMMAND_EXEC
, "display I/D cache content");
720 register_command(cmd_ctx
, arm920t_cmd
, "read_mmu", arm920t_handle_read_mmu_command
, COMMAND_EXEC
, "display I/D mmu content");
725 int arm920t_handle_read_cache_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
727 int retval
= ERROR_OK
;
728 target_t
*target
= get_current_target(cmd_ctx
);
729 armv4_5_common_t
*armv4_5
;
730 arm7_9_common_t
*arm7_9
;
731 arm9tdmi_common_t
*arm9tdmi
;
732 arm920t_common_t
*arm920t
;
733 arm_jtag_t
*jtag_info
;
735 uint32_t cp15_ctrl
, cp15_ctrl_saved
;
737 uint32_t *regs_p
[16];
738 uint32_t C15_C_D_Ind
, C15_C_I_Ind
;
741 arm920t_cache_line_t d_cache
[8][64], i_cache
[8][64];
746 command_print(cmd_ctx
, "usage: arm920t read_cache <filename>");
750 if ((output
= fopen(args
[0], "w")) == NULL
)
752 LOG_DEBUG("error opening cache content file");
756 for (i
= 0; i
< 16; i
++)
757 regs_p
[i
] = ®s
[i
];
759 if (arm920t_get_arch_pointers(target
, &armv4_5
, &arm7_9
, &arm9tdmi
, &arm920t
) != ERROR_OK
)
761 command_print(cmd_ctx
, "current target isn't an ARM920t target");
765 jtag_info
= &arm7_9
->jtag_info
;
767 /* disable MMU and Caches */
768 arm920t_read_cp15_physical(target
, ARM920T_CP15_PHYS_ADDR(0, 0x1, 0), &cp15_ctrl
);
769 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
773 cp15_ctrl_saved
= cp15_ctrl
;
774 cp15_ctrl
&= ~(ARMV4_5_MMU_ENABLED
| ARMV4_5_D_U_CACHE_ENABLED
| ARMV4_5_I_CACHE_ENABLED
);
775 arm920t_write_cp15_physical(target
, ARM920T_CP15_PHYS_ADDR(0, 0x1, 0), cp15_ctrl
);
777 /* read CP15 test state register */
778 arm920t_read_cp15_physical(target
, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), &cp15c15
);
779 jtag_execute_queue();
781 /* read DCache content */
782 fprintf(output
, "DCache:\n");
784 /* go through segments 0 to nsets (8 on ARM920T, 4 on ARM922T) */
785 for (segment
= 0; segment
< arm920t
->armv4_5_mmu
.armv4_5_cache
.d_u_size
.nsets
; segment
++)
787 fprintf(output
, "\nsegment: %i\n----------", segment
);
789 /* Ra: r0 = SBZ(31:8):segment(7:5):SBZ(4:0) */
790 regs
[0] = 0x0 | (segment
<< 5);
791 arm9tdmi_write_core_regs(target
, 0x1, regs
);
793 /* set interpret mode */
795 arm920t_write_cp15_physical(target
, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15
);
797 /* D CAM Read, loads current victim into C15.C.D.Ind */
798 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,2,0,15,6,2), ARMV4_5_LDR(1, 0));
800 /* read current victim */
801 arm920t_read_cp15_physical(target
, 0x3d, &C15_C_D_Ind
);
803 /* clear interpret mode */
805 arm920t_write_cp15_physical(target
, 0x1e, cp15c15
);
807 for (index
= 0; index
< 64; index
++)
809 /* Ra: r0 = index(31:26):SBZ(25:8):segment(7:5):SBZ(4:0) */
810 regs
[0] = 0x0 | (segment
<< 5) | (index
<< 26);
811 arm9tdmi_write_core_regs(target
, 0x1, regs
);
813 /* set interpret mode */
815 arm920t_write_cp15_physical(target
, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15
);
817 /* Write DCache victim */
818 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,0,0,9,1,0), ARMV4_5_LDR(1, 0));
821 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,2,0,15,10,2), ARMV4_5_LDMIA(0, 0x1fe, 0, 0));
824 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,2,0,15,6,2), ARMV4_5_LDR(9, 0));
826 /* clear interpret mode */
828 arm920t_write_cp15_physical(target
, 0x1e, cp15c15
);
830 /* read D RAM and CAM content */
831 arm9tdmi_read_core_regs(target
, 0x3fe, regs_p
);
832 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
837 d_cache
[segment
][index
].cam
= regs
[9];
840 regs
[9] &= 0xfffffffe;
841 fprintf(output
, "\nsegment: %i, index: %i, CAM: 0x%8.8" PRIx32
", content (%s):\n", segment
, index
, regs
[9], (regs
[9] & 0x10) ? "valid" : "invalid");
843 for (i
= 1; i
< 9; i
++)
845 d_cache
[segment
][index
].data
[i
] = regs
[i
];
846 fprintf(output
, "%i: 0x%8.8" PRIx32
"\n", i
-1, regs
[i
]);
851 /* Ra: r0 = index(31:26):SBZ(25:8):segment(7:5):SBZ(4:0) */
852 regs
[0] = 0x0 | (segment
<< 5) | (C15_C_D_Ind
<< 26);
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 /* Write DCache victim */
860 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,0,0,9,1,0), ARMV4_5_LDR(1, 0));
862 /* clear interpret mode */
864 arm920t_write_cp15_physical(target
, 0x1e, cp15c15
);
867 /* read ICache content */
868 fprintf(output
, "ICache:\n");
870 /* go through segments 0 to nsets (8 on ARM920T, 4 on ARM922T) */
871 for (segment
= 0; segment
< arm920t
->armv4_5_mmu
.armv4_5_cache
.d_u_size
.nsets
; segment
++)
873 fprintf(output
, "segment: %i\n----------", segment
);
875 /* Ra: r0 = SBZ(31:8):segment(7:5):SBZ(4:0) */
876 regs
[0] = 0x0 | (segment
<< 5);
877 arm9tdmi_write_core_regs(target
, 0x1, regs
);
879 /* set interpret mode */
881 arm920t_write_cp15_physical(target
, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15
);
883 /* I CAM Read, loads current victim into C15.C.I.Ind */
884 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,2,0,15,5,2), ARMV4_5_LDR(1, 0));
886 /* read current victim */
887 arm920t_read_cp15_physical(target
, 0x3b, &C15_C_I_Ind
);
889 /* clear interpret mode */
891 arm920t_write_cp15_physical(target
, 0x1e, cp15c15
);
893 for (index
= 0; index
< 64; index
++)
895 /* Ra: r0 = index(31:26):SBZ(25:8):segment(7:5):SBZ(4:0) */
896 regs
[0] = 0x0 | (segment
<< 5) | (index
<< 26);
897 arm9tdmi_write_core_regs(target
, 0x1, regs
);
899 /* set interpret mode */
901 arm920t_write_cp15_physical(target
, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15
);
903 /* Write ICache victim */
904 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,0,0,9,1,1), ARMV4_5_LDR(1, 0));
907 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,2,0,15,9,2), ARMV4_5_LDMIA(0, 0x1fe, 0, 0));
910 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,2,0,15,5,2), ARMV4_5_LDR(9, 0));
912 /* clear interpret mode */
914 arm920t_write_cp15_physical(target
, 0x1e, cp15c15
);
916 /* read I RAM and CAM content */
917 arm9tdmi_read_core_regs(target
, 0x3fe, regs_p
);
918 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
923 i_cache
[segment
][index
].cam
= regs
[9];
926 regs
[9] &= 0xfffffffe;
927 fprintf(output
, "\nsegment: %i, index: %i, CAM: 0x%8.8" PRIx32
", content (%s):\n", segment
, index
, regs
[9], (regs
[9] & 0x10) ? "valid" : "invalid");
929 for (i
= 1; i
< 9; i
++)
931 i_cache
[segment
][index
].data
[i
] = regs
[i
];
932 fprintf(output
, "%i: 0x%8.8" PRIx32
"\n", i
-1, regs
[i
]);
936 /* Ra: r0 = index(31:26):SBZ(25:8):segment(7:5):SBZ(4:0) */
937 regs
[0] = 0x0 | (segment
<< 5) | (C15_C_D_Ind
<< 26);
938 arm9tdmi_write_core_regs(target
, 0x1, regs
);
940 /* set interpret mode */
942 arm920t_write_cp15_physical(target
, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15
);
944 /* Write ICache victim */
945 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,0,0,9,1,1), ARMV4_5_LDR(1, 0));
947 /* clear interpret mode */
949 arm920t_write_cp15_physical(target
, 0x1e, cp15c15
);
952 /* restore CP15 MMU and Cache settings */
953 arm920t_write_cp15_physical(target
, ARM920T_CP15_PHYS_ADDR(0, 0x1, 0), cp15_ctrl_saved
);
955 command_print(cmd_ctx
, "cache content successfully output to %s", args
[0]);
959 if (armv4_5_mode_to_number(armv4_5
->core_mode
)==-1)
962 /* mark registers dirty. */
963 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
;
964 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
;
965 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
;
966 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
;
967 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
;
968 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
;
969 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
;
970 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
;
971 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
;
972 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
;
977 int arm920t_handle_read_mmu_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
979 int retval
= ERROR_OK
;
980 target_t
*target
= get_current_target(cmd_ctx
);
981 armv4_5_common_t
*armv4_5
;
982 arm7_9_common_t
*arm7_9
;
983 arm9tdmi_common_t
*arm9tdmi
;
984 arm920t_common_t
*arm920t
;
985 arm_jtag_t
*jtag_info
;
987 uint32_t cp15_ctrl
, cp15_ctrl_saved
;
989 uint32_t *regs_p
[16];
992 uint32_t Dlockdown
, Ilockdown
;
993 arm920t_tlb_entry_t d_tlb
[64], i_tlb
[64];
998 command_print(cmd_ctx
, "usage: arm920t read_mmu <filename>");
1002 if ((output
= fopen(args
[0], "w")) == NULL
)
1004 LOG_DEBUG("error opening mmu content file");
1008 for (i
= 0; i
< 16; i
++)
1009 regs_p
[i
] = ®s
[i
];
1011 if (arm920t_get_arch_pointers(target
, &armv4_5
, &arm7_9
, &arm9tdmi
, &arm920t
) != ERROR_OK
)
1013 command_print(cmd_ctx
, "current target isn't an ARM920t target");
1017 jtag_info
= &arm7_9
->jtag_info
;
1019 /* disable MMU and Caches */
1020 arm920t_read_cp15_physical(target
, ARM920T_CP15_PHYS_ADDR(0, 0x1, 0), &cp15_ctrl
);
1021 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1025 cp15_ctrl_saved
= cp15_ctrl
;
1026 cp15_ctrl
&= ~(ARMV4_5_MMU_ENABLED
| ARMV4_5_D_U_CACHE_ENABLED
| ARMV4_5_I_CACHE_ENABLED
);
1027 arm920t_write_cp15_physical(target
, ARM920T_CP15_PHYS_ADDR(0, 0x1, 0), cp15_ctrl
);
1029 /* read CP15 test state register */
1030 arm920t_read_cp15_physical(target
, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), &cp15c15
);
1031 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1036 /* prepare reading D TLB content
1039 /* set interpret mode */
1041 arm920t_write_cp15_physical(target
, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15
);
1043 /* Read D TLB lockdown */
1044 arm920t_execute_cp15(target
, ARMV4_5_MRC(15,0,0,10,0,0), ARMV4_5_LDR(1, 0));
1046 /* clear interpret mode */
1048 arm920t_write_cp15_physical(target
, 0x1e, cp15c15
);
1050 /* read D TLB lockdown stored to r1 */
1051 arm9tdmi_read_core_regs(target
, 0x2, regs_p
);
1052 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1056 Dlockdown
= regs
[1];
1058 for (victim
= 0; victim
< 64; victim
+= 8)
1060 /* new lockdown value: base[31:26]:victim[25:20]:SBZ[19:1]:p[0]
1061 * base remains unchanged, victim goes through entries 0 to 63 */
1062 regs
[1] = (Dlockdown
& 0xfc000000) | (victim
<< 20);
1063 arm9tdmi_write_core_regs(target
, 0x2, regs
);
1065 /* set interpret mode */
1067 arm920t_write_cp15_physical(target
, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15
);
1069 /* Write D TLB lockdown */
1070 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,0,0,10,0,0), ARMV4_5_STR(1, 0));
1072 /* Read D TLB CAM */
1073 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,4,0,15,6,4), ARMV4_5_LDMIA(0, 0x3fc, 0, 0));
1075 /* clear interpret mode */
1077 arm920t_write_cp15_physical(target
, 0x1e, cp15c15
);
1079 /* read D TLB CAM content stored to r2-r9 */
1080 arm9tdmi_read_core_regs(target
, 0x3fc, regs_p
);
1081 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1086 for (i
= 0; i
< 8; i
++)
1087 d_tlb
[victim
+ i
].cam
= regs
[i
+ 2];
1090 for (victim
= 0; victim
< 64; victim
++)
1092 /* new lockdown value: base[31:26]:victim[25:20]:SBZ[19:1]:p[0]
1093 * base remains unchanged, victim goes through entries 0 to 63 */
1094 regs
[1] = (Dlockdown
& 0xfc000000) | (victim
<< 20);
1095 arm9tdmi_write_core_regs(target
, 0x2, regs
);
1097 /* set interpret mode */
1099 arm920t_write_cp15_physical(target
, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15
);
1101 /* Write D TLB lockdown */
1102 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,0,0,10,0,0), ARMV4_5_STR(1, 0));
1104 /* Read D TLB RAM1 */
1105 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,4,0,15,10,4), ARMV4_5_LDR(2,0));
1107 /* Read D TLB RAM2 */
1108 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,4,0,15,2,5), ARMV4_5_LDR(3,0));
1110 /* clear interpret mode */
1112 arm920t_write_cp15_physical(target
, 0x1e, cp15c15
);
1114 /* read D TLB RAM content stored to r2 and r3 */
1115 arm9tdmi_read_core_regs(target
, 0xc, regs_p
);
1116 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1121 d_tlb
[victim
].ram1
= regs
[2];
1122 d_tlb
[victim
].ram2
= regs
[3];
1125 /* restore D TLB lockdown */
1126 regs
[1] = Dlockdown
;
1127 arm9tdmi_write_core_regs(target
, 0x2, regs
);
1129 /* Write D TLB lockdown */
1130 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,0,0,10,0,0), ARMV4_5_STR(1, 0));
1132 /* prepare reading I TLB content
1135 /* set interpret mode */
1137 arm920t_write_cp15_physical(target
, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15
);
1139 /* Read I TLB lockdown */
1140 arm920t_execute_cp15(target
, ARMV4_5_MRC(15,0,0,10,0,1), ARMV4_5_LDR(1, 0));
1142 /* clear interpret mode */
1144 arm920t_write_cp15_physical(target
, 0x1e, cp15c15
);
1146 /* read I TLB lockdown stored to r1 */
1147 arm9tdmi_read_core_regs(target
, 0x2, regs_p
);
1148 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1152 Ilockdown
= regs
[1];
1154 for (victim
= 0; victim
< 64; victim
+= 8)
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] = (Ilockdown
& 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 I TLB lockdown */
1166 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,0,0,10,0,1), ARMV4_5_STR(1, 0));
1168 /* Read I TLB CAM */
1169 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,4,0,15,5,4), ARMV4_5_LDMIA(0, 0x3fc, 0, 0));
1171 /* clear interpret mode */
1173 arm920t_write_cp15_physical(target
, 0x1e, cp15c15
);
1175 /* read I TLB CAM content stored to r2-r9 */
1176 arm9tdmi_read_core_regs(target
, 0x3fc, regs_p
);
1177 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1182 for (i
= 0; i
< 8; i
++)
1183 i_tlb
[i
+ victim
].cam
= regs
[i
+ 2];
1186 for (victim
= 0; victim
< 64; victim
++)
1188 /* new lockdown value: base[31:26]:victim[25:20]:SBZ[19:1]:p[0]
1189 * base remains unchanged, victim goes through entries 0 to 63 */
1190 regs
[1] = (Dlockdown
& 0xfc000000) | (victim
<< 20);
1191 arm9tdmi_write_core_regs(target
, 0x2, regs
);
1193 /* set interpret mode */
1195 arm920t_write_cp15_physical(target
, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15
);
1197 /* Write I TLB lockdown */
1198 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,0,0,10,0,1), ARMV4_5_STR(1, 0));
1200 /* Read I TLB RAM1 */
1201 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,4,0,15,9,4), ARMV4_5_LDR(2,0));
1203 /* Read I TLB RAM2 */
1204 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,4,0,15,1,5), ARMV4_5_LDR(3,0));
1206 /* clear interpret mode */
1208 arm920t_write_cp15_physical(target
, 0x1e, cp15c15
);
1210 /* read I TLB RAM content stored to r2 and r3 */
1211 arm9tdmi_read_core_regs(target
, 0xc, regs_p
);
1212 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1217 i_tlb
[victim
].ram1
= regs
[2];
1218 i_tlb
[victim
].ram2
= regs
[3];
1221 /* restore I TLB lockdown */
1222 regs
[1] = Ilockdown
;
1223 arm9tdmi_write_core_regs(target
, 0x2, regs
);
1225 /* Write I TLB lockdown */
1226 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,0,0,10,0,1), ARMV4_5_STR(1, 0));
1228 /* restore CP15 MMU and Cache settings */
1229 arm920t_write_cp15_physical(target
, ARM920T_CP15_PHYS_ADDR(0, 0x1, 0), cp15_ctrl_saved
);
1231 /* output data to file */
1232 fprintf(output
, "D TLB content:\n");
1233 for (i
= 0; i
< 64; i
++)
1235 fprintf(output
, "%i: 0x%8.8" PRIx32
" 0x%8.8" PRIx32
" 0x%8.8" PRIx32
" %s\n", i
, d_tlb
[i
].cam
, d_tlb
[i
].ram1
, d_tlb
[i
].ram2
, (d_tlb
[i
].cam
& 0x20) ? "(valid)" : "(invalid)");
1238 fprintf(output
, "\n\nI TLB content:\n");
1239 for (i
= 0; i
< 64; i
++)
1241 fprintf(output
, "%i: 0x%8.8" PRIx32
" 0x%8.8" PRIx32
" 0x%8.8" PRIx32
" %s\n", i
, i_tlb
[i
].cam
, i_tlb
[i
].ram1
, i_tlb
[i
].ram2
, (i_tlb
[i
].cam
& 0x20) ? "(valid)" : "(invalid)");
1244 command_print(cmd_ctx
, "mmu content successfully output to %s", args
[0]);
1248 if (armv4_5_mode_to_number(armv4_5
->core_mode
)==-1)
1251 /* mark registers dirty */
1252 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
;
1253 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
;
1254 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
;
1255 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
;
1256 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
;
1257 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
;
1258 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
;
1259 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
;
1260 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
;
1261 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
;
1265 int arm920t_handle_cp15_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1268 target_t
*target
= get_current_target(cmd_ctx
);
1269 armv4_5_common_t
*armv4_5
;
1270 arm7_9_common_t
*arm7_9
;
1271 arm9tdmi_common_t
*arm9tdmi
;
1272 arm920t_common_t
*arm920t
;
1273 arm_jtag_t
*jtag_info
;
1275 if (arm920t_get_arch_pointers(target
, &armv4_5
, &arm7_9
, &arm9tdmi
, &arm920t
) != ERROR_OK
)
1277 command_print(cmd_ctx
, "current target isn't an ARM920t target");
1281 jtag_info
= &arm7_9
->jtag_info
;
1283 if (target
->state
!= TARGET_HALTED
)
1285 command_print(cmd_ctx
, "target must be stopped for \"%s\" command", cmd
);
1289 /* one or more argument, access a single register (write if second argument is given */
1292 int address
= strtoul(args
[0], NULL
, 0);
1297 if ((retval
= arm920t_read_cp15_physical(target
, address
, &value
)) != ERROR_OK
)
1299 command_print(cmd_ctx
, "couldn't access reg %i", address
);
1302 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1307 command_print(cmd_ctx
, "%i: %8.8" PRIx32
"", address
, value
);
1311 uint32_t value
= strtoul(args
[1], NULL
, 0);
1312 if ((retval
= arm920t_write_cp15_physical(target
, address
, value
)) != ERROR_OK
)
1314 command_print(cmd_ctx
, "couldn't access reg %i", address
);
1317 command_print(cmd_ctx
, "%i: %8.8" PRIx32
"", address
, value
);
1324 int arm920t_handle_cp15i_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1327 target_t
*target
= get_current_target(cmd_ctx
);
1328 armv4_5_common_t
*armv4_5
;
1329 arm7_9_common_t
*arm7_9
;
1330 arm9tdmi_common_t
*arm9tdmi
;
1331 arm920t_common_t
*arm920t
;
1332 arm_jtag_t
*jtag_info
;
1334 if (arm920t_get_arch_pointers(target
, &armv4_5
, &arm7_9
, &arm9tdmi
, &arm920t
) != ERROR_OK
)
1336 command_print(cmd_ctx
, "current target isn't an ARM920t target");
1340 jtag_info
= &arm7_9
->jtag_info
;
1342 if (target
->state
!= TARGET_HALTED
)
1344 command_print(cmd_ctx
, "target must be stopped for \"%s\" command", cmd
);
1348 /* one or more argument, access a single register (write if second argument is given */
1351 uint32_t opcode
= strtoul(args
[0], NULL
, 0);
1356 if ((retval
= arm920t_read_cp15_interpreted(target
, opcode
, 0x0, &value
)) != ERROR_OK
)
1358 command_print(cmd_ctx
, "couldn't execute %8.8" PRIx32
"", opcode
);
1362 command_print(cmd_ctx
, "%8.8" PRIx32
": %8.8" PRIx32
"", opcode
, value
);
1366 uint32_t value
= strtoul(args
[1], NULL
, 0);
1367 if ((retval
= arm920t_write_cp15_interpreted(target
, opcode
, value
, 0)) != ERROR_OK
)
1369 command_print(cmd_ctx
, "couldn't execute %8.8" PRIx32
"", opcode
);
1372 command_print(cmd_ctx
, "%8.8" PRIx32
": %8.8" PRIx32
"", opcode
, value
);
1376 uint32_t value
= strtoul(args
[1], NULL
, 0);
1377 uint32_t address
= strtoul(args
[2], NULL
, 0);
1378 if ((retval
= arm920t_write_cp15_interpreted(target
, opcode
, value
, address
)) != ERROR_OK
)
1380 command_print(cmd_ctx
, "couldn't execute %8.8" PRIx32
"", opcode
);
1383 command_print(cmd_ctx
, "%8.8" PRIx32
": %8.8" PRIx32
" %8.8" PRIx32
"", opcode
, value
, address
);
1388 command_print(cmd_ctx
, "usage: arm920t cp15i <opcode> [value] [address]");
1394 int arm920t_handle_cache_info_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1396 target_t
*target
= get_current_target(cmd_ctx
);
1397 armv4_5_common_t
*armv4_5
;
1398 arm7_9_common_t
*arm7_9
;
1399 arm9tdmi_common_t
*arm9tdmi
;
1400 arm920t_common_t
*arm920t
;
1402 if (arm920t_get_arch_pointers(target
, &armv4_5
, &arm7_9
, &arm9tdmi
, &arm920t
) != ERROR_OK
)
1404 command_print(cmd_ctx
, "current target isn't an ARM920t target");
1408 return armv4_5_handle_cache_info_command(cmd_ctx
, &arm920t
->armv4_5_mmu
.armv4_5_cache
);