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 <helper/time_support.h>
26 #include "target_type.h"
28 #include "arm_opcodes.h"
32 * For information about the ARM920T, see ARM DDI 0151C especially
33 * Chapter 9 about debug support, which shows how to manipulate each
34 * of the different scan chains:
36 * 0 ... ARM920 signals, e.g. to rest of SOC (unused here)
37 * 1 ... debugging; watchpoint and breakpoint status, etc; also
38 * MMU and cache access in conjunction with scan chain 15
40 * 3 ... external boundary scan (SoC-specific, unused here)
41 * 4 ... access to cache tag RAM
43 * 15 ... access coprocessor 15, "physical" or "interpreted" modes
44 * "interpreted" works with a few actual MRC/MCR instructions
45 * "physical" provides register-like behaviors. Section 9.6.7
46 * covers these details.
48 * The ARM922T is similar, but with smaller caches (8K each, vs 16K).
52 #define _DEBUG_INSTRUCTION_EXECUTION_
55 /* Table 9-8 shows scan chain 15 format during physical access mode, using a
56 * dedicated 6-bit address space (encoded in bits 33:38). Writes use one
57 * JTAG scan, while reads use two.
59 * Table 9-9 lists the thirteen registers which support physical access.
60 * ARM920T_CP15_PHYS_ADDR() constructs the 6-bit reg_addr parameter passed
61 * to arm920t_read_cp15_physical() and arm920t_write_cp15_physical().
67 #define ARM920T_CP15_PHYS_ADDR(x, y, z) ((x << 5) | (y << 1) << (z))
69 /* Registers supporting physical Read access (from table 9-9) */
70 #define CP15PHYS_CACHETYPE ARM920T_CP15_PHYS_ADDR(0, 0x0, 1)
71 #define CP15PHYS_ICACHE_IDX ARM920T_CP15_PHYS_ADDR(1, 0xd, 1)
72 #define CP15PHYS_DCACHE_IDX ARM920T_CP15_PHYS_ADDR(1, 0xe, 1)
73 /* NOTE: several more registers support only physical read access */
75 /* Registers supporting physical Read/Write access (from table 9-9) */
76 #define CP15PHYS_CTRL ARM920T_CP15_PHYS_ADDR(0, 0x1, 0)
77 #define CP15PHYS_PID ARM920T_CP15_PHYS_ADDR(0, 0xd, 0)
78 #define CP15PHYS_TESTSTATE ARM920T_CP15_PHYS_ADDR(0, 0xf, 0)
79 #define CP15PHYS_ICACHE ARM920T_CP15_PHYS_ADDR(1, 0x1, 1)
80 #define CP15PHYS_DCACHE ARM920T_CP15_PHYS_ADDR(1, 0x2, 1)
82 static int arm920t_read_cp15_physical(struct target
*target
,
83 int reg_addr
, uint32_t *value
)
85 struct arm920t_common
*arm920t
= target_to_arm920(target
);
86 struct arm_jtag
*jtag_info
;
87 struct scan_field fields
[4];
88 uint8_t access_type_buf
= 1;
89 uint8_t reg_addr_buf
= reg_addr
& 0x3f;
92 jtag_info
= &arm920t
->arm7_9_common
.jtag_info
;
94 jtag_set_end_state(TAP_IDLE
);
95 arm_jtag_scann(jtag_info
, 0xf);
96 arm_jtag_set_instr(jtag_info
, jtag_info
->intest_instr
, NULL
);
98 fields
[0].tap
= jtag_info
->tap
;
99 fields
[0].num_bits
= 1;
100 fields
[0].out_value
= &access_type_buf
;
101 fields
[0].in_value
= NULL
;
103 fields
[1].tap
= jtag_info
->tap
;
104 fields
[1].num_bits
= 32;
105 fields
[1].out_value
= NULL
;
106 fields
[1].in_value
= NULL
;
108 fields
[2].tap
= jtag_info
->tap
;
109 fields
[2].num_bits
= 6;
110 fields
[2].out_value
= ®_addr_buf
;
111 fields
[2].in_value
= NULL
;
113 fields
[3].tap
= jtag_info
->tap
;
114 fields
[3].num_bits
= 1;
115 fields
[3].out_value
= &nr_w_buf
;
116 fields
[3].in_value
= NULL
;
118 jtag_add_dr_scan(4, fields
, jtag_get_end_state());
120 fields
[1].in_value
= (uint8_t *)value
;
122 jtag_add_dr_scan(4, fields
, jtag_get_end_state());
124 jtag_add_callback(arm_le_to_h_u32
, (jtag_callback_data_t
)value
);
126 #ifdef _DEBUG_INSTRUCTION_EXECUTION_
127 jtag_execute_queue();
128 LOG_DEBUG("addr: 0x%x value: %8.8x", reg_addr
, *value
);
134 static int arm920t_write_cp15_physical(struct target
*target
,
135 int reg_addr
, uint32_t value
)
137 struct arm920t_common
*arm920t
= target_to_arm920(target
);
138 struct arm_jtag
*jtag_info
;
139 struct scan_field fields
[4];
140 uint8_t access_type_buf
= 1;
141 uint8_t reg_addr_buf
= reg_addr
& 0x3f;
142 uint8_t nr_w_buf
= 1;
143 uint8_t value_buf
[4];
145 jtag_info
= &arm920t
->arm7_9_common
.jtag_info
;
147 buf_set_u32(value_buf
, 0, 32, value
);
149 jtag_set_end_state(TAP_IDLE
);
150 arm_jtag_scann(jtag_info
, 0xf);
151 arm_jtag_set_instr(jtag_info
, jtag_info
->intest_instr
, NULL
);
153 fields
[0].tap
= jtag_info
->tap
;
154 fields
[0].num_bits
= 1;
155 fields
[0].out_value
= &access_type_buf
;
156 fields
[0].in_value
= NULL
;
158 fields
[1].tap
= jtag_info
->tap
;
159 fields
[1].num_bits
= 32;
160 fields
[1].out_value
= value_buf
;
161 fields
[1].in_value
= NULL
;
163 fields
[2].tap
= jtag_info
->tap
;
164 fields
[2].num_bits
= 6;
165 fields
[2].out_value
= ®_addr_buf
;
166 fields
[2].in_value
= NULL
;
168 fields
[3].tap
= jtag_info
->tap
;
169 fields
[3].num_bits
= 1;
170 fields
[3].out_value
= &nr_w_buf
;
171 fields
[3].in_value
= NULL
;
173 jtag_add_dr_scan(4, fields
, jtag_get_end_state());
175 #ifdef _DEBUG_INSTRUCTION_EXECUTION_
176 LOG_DEBUG("addr: 0x%x value: %8.8x", reg_addr
, value
);
182 /* See table 9-10 for scan chain 15 format during interpreted access mode.
183 * If the TESTSTATE register is set for interpreted access, certain CP15
184 * MRC and MCR instructions may be executed through scan chain 15.
186 * Tables 9-11, 9-12, and 9-13 show which MRC and MCR instructions can be
187 * executed using scan chain 15 interpreted mode.
189 static int arm920t_execute_cp15(struct target
*target
, uint32_t cp15_opcode
,
193 struct arm920t_common
*arm920t
= target_to_arm920(target
);
194 struct arm_jtag
*jtag_info
;
195 struct scan_field fields
[4];
196 uint8_t access_type_buf
= 0; /* interpreted access */
197 uint8_t reg_addr_buf
= 0x0;
198 uint8_t nr_w_buf
= 0;
199 uint8_t cp15_opcode_buf
[4];
201 jtag_info
= &arm920t
->arm7_9_common
.jtag_info
;
203 jtag_set_end_state(TAP_IDLE
);
204 arm_jtag_scann(jtag_info
, 0xf);
205 arm_jtag_set_instr(jtag_info
, jtag_info
->intest_instr
, NULL
);
207 buf_set_u32(cp15_opcode_buf
, 0, 32, cp15_opcode
);
209 fields
[0].tap
= jtag_info
->tap
;
210 fields
[0].num_bits
= 1;
211 fields
[0].out_value
= &access_type_buf
;
212 fields
[0].in_value
= NULL
;
214 fields
[1].tap
= jtag_info
->tap
;
215 fields
[1].num_bits
= 32;
216 fields
[1].out_value
= cp15_opcode_buf
;
217 fields
[1].in_value
= NULL
;
219 fields
[2].tap
= jtag_info
->tap
;
220 fields
[2].num_bits
= 6;
221 fields
[2].out_value
= ®_addr_buf
;
222 fields
[2].in_value
= NULL
;
224 fields
[3].tap
= jtag_info
->tap
;
225 fields
[3].num_bits
= 1;
226 fields
[3].out_value
= &nr_w_buf
;
227 fields
[3].in_value
= NULL
;
229 jtag_add_dr_scan(4, fields
, jtag_get_end_state());
231 arm9tdmi_clock_out(jtag_info
, arm_opcode
, 0, NULL
, 0);
232 arm9tdmi_clock_out(jtag_info
, ARMV4_5_NOP
, 0, NULL
, 1);
233 retval
= arm7_9_execute_sys_speed(target
);
234 if (retval
!= ERROR_OK
)
237 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
239 LOG_ERROR("failed executing JTAG queue");
246 static int arm920t_read_cp15_interpreted(struct target
*target
,
247 uint32_t cp15_opcode
, uint32_t address
, uint32_t *value
)
249 struct arm
*armv4_5
= target_to_arm(target
);
252 uint32_t cp15c15
= 0x0;
253 struct reg
*r
= armv4_5
->core_cache
->reg_list
;
255 /* load address into R1 */
257 arm9tdmi_write_core_regs(target
, 0x2, regs
);
259 /* read-modify-write CP15 test state register
260 * to enable interpreted access mode */
261 arm920t_read_cp15_physical(target
, CP15PHYS_TESTSTATE
, &cp15c15
);
262 jtag_execute_queue();
263 cp15c15
|= 1; /* set interpret mode */
264 arm920t_write_cp15_physical(target
, CP15PHYS_TESTSTATE
, cp15c15
);
266 /* execute CP15 instruction and ARM load (reading from coprocessor) */
267 arm920t_execute_cp15(target
, cp15_opcode
, ARMV4_5_LDR(0, 1));
269 /* disable interpreted access mode */
270 cp15c15
&= ~1U; /* clear interpret mode */
271 arm920t_write_cp15_physical(target
, CP15PHYS_TESTSTATE
, cp15c15
);
273 /* retrieve value from R0 */
275 arm9tdmi_read_core_regs(target
, 0x1, regs_p
);
276 jtag_execute_queue();
278 #ifdef _DEBUG_INSTRUCTION_EXECUTION_
279 LOG_DEBUG("cp15_opcode: %8.8x, address: %8.8x, value: %8.8x", cp15_opcode
, address
, *value
);
282 if (!is_arm_mode(armv4_5
->core_mode
))
292 int arm920t_write_cp15_interpreted(struct target
*target
,
293 uint32_t cp15_opcode
, uint32_t value
, uint32_t address
)
295 uint32_t cp15c15
= 0x0;
296 struct arm
*armv4_5
= target_to_arm(target
);
298 struct reg
*r
= armv4_5
->core_cache
->reg_list
;
300 /* load value, address into R0, R1 */
303 arm9tdmi_write_core_regs(target
, 0x3, regs
);
305 /* read-modify-write CP15 test state register
306 * to enable interpreted access mode */
307 arm920t_read_cp15_physical(target
, CP15PHYS_TESTSTATE
, &cp15c15
);
308 jtag_execute_queue();
309 cp15c15
|= 1; /* set interpret mode */
310 arm920t_write_cp15_physical(target
, CP15PHYS_TESTSTATE
, cp15c15
);
312 /* execute CP15 instruction and ARM store (writing to coprocessor) */
313 arm920t_execute_cp15(target
, cp15_opcode
, ARMV4_5_STR(0, 1));
315 /* disable interpreted access mode */
316 cp15c15
&= ~1U; /* set interpret mode */
317 arm920t_write_cp15_physical(target
, CP15PHYS_TESTSTATE
, cp15c15
);
319 #ifdef _DEBUG_INSTRUCTION_EXECUTION_
320 LOG_DEBUG("cp15_opcode: %8.8x, value: %8.8x, address: %8.8x", cp15_opcode
, value
, address
);
323 if (!is_arm_mode(armv4_5
->core_mode
))
333 uint32_t arm920t_get_ttb(struct target
*target
)
338 if ((retval
= arm920t_read_cp15_interpreted(target
, 0xeebf0f51, 0x0, &ttb
)) != ERROR_OK
)
345 void arm920t_disable_mmu_caches(struct target
*target
, int mmu
, int d_u_cache
, int i_cache
)
347 uint32_t cp15_control
;
349 /* read cp15 control register */
350 arm920t_read_cp15_physical(target
, CP15PHYS_CTRL
, &cp15_control
);
351 jtag_execute_queue();
354 cp15_control
&= ~0x1U
;
357 cp15_control
&= ~0x4U
;
360 cp15_control
&= ~0x1000U
;
362 arm920t_write_cp15_physical(target
, CP15PHYS_CTRL
, cp15_control
);
366 void arm920t_enable_mmu_caches(struct target
*target
, int mmu
, int d_u_cache
, int i_cache
)
368 uint32_t cp15_control
;
370 /* read cp15 control register */
371 arm920t_read_cp15_physical(target
, CP15PHYS_CTRL
, &cp15_control
);
372 jtag_execute_queue();
375 cp15_control
|= 0x1U
;
378 cp15_control
|= 0x4U
;
381 cp15_control
|= 0x1000U
;
383 arm920t_write_cp15_physical(target
, CP15PHYS_CTRL
, cp15_control
);
387 void arm920t_post_debug_entry(struct target
*target
)
390 struct arm920t_common
*arm920t
= target_to_arm920(target
);
392 /* examine cp15 control reg */
393 arm920t_read_cp15_physical(target
,
394 CP15PHYS_CTRL
, &arm920t
->cp15_control_reg
);
395 jtag_execute_queue();
396 LOG_DEBUG("cp15_control_reg: %8.8" PRIx32
"", arm920t
->cp15_control_reg
);
398 if (arm920t
->armv4_5_mmu
.armv4_5_cache
.ctype
== -1)
400 uint32_t cache_type_reg
;
401 /* identify caches */
402 arm920t_read_cp15_physical(target
,
403 CP15PHYS_CACHETYPE
, &cache_type_reg
);
404 jtag_execute_queue();
405 armv4_5_identify_cache(cache_type_reg
, &arm920t
->armv4_5_mmu
.armv4_5_cache
);
408 arm920t
->armv4_5_mmu
.mmu_enabled
= (arm920t
->cp15_control_reg
& 0x1U
) ? 1 : 0;
409 arm920t
->armv4_5_mmu
.armv4_5_cache
.d_u_cache_enabled
= (arm920t
->cp15_control_reg
& 0x4U
) ? 1 : 0;
410 arm920t
->armv4_5_mmu
.armv4_5_cache
.i_cache_enabled
= (arm920t
->cp15_control_reg
& 0x1000U
) ? 1 : 0;
412 /* save i/d fault status and address register */
413 arm920t_read_cp15_interpreted(target
, 0xee150f10, 0x0, &arm920t
->d_fsr
);
414 arm920t_read_cp15_interpreted(target
, 0xee150f30, 0x0, &arm920t
->i_fsr
);
415 arm920t_read_cp15_interpreted(target
, 0xee160f10, 0x0, &arm920t
->d_far
);
416 arm920t_read_cp15_interpreted(target
, 0xee160f30, 0x0, &arm920t
->i_far
);
418 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
"",
419 arm920t
->d_fsr
, arm920t
->d_far
, arm920t
->i_fsr
, arm920t
->i_far
);
421 if (arm920t
->preserve_cache
)
423 /* read-modify-write CP15 test state register
424 * to disable I/D-cache linefills */
425 arm920t_read_cp15_physical(target
,
426 CP15PHYS_TESTSTATE
, &cp15c15
);
427 jtag_execute_queue();
429 arm920t_write_cp15_physical(target
,
430 CP15PHYS_TESTSTATE
, cp15c15
);
435 void arm920t_pre_restore_context(struct target
*target
)
438 struct arm920t_common
*arm920t
= target_to_arm920(target
);
440 /* restore i/d fault status and address register */
441 arm920t_write_cp15_interpreted(target
, 0xee050f10, arm920t
->d_fsr
, 0x0);
442 arm920t_write_cp15_interpreted(target
, 0xee050f30, arm920t
->i_fsr
, 0x0);
443 arm920t_write_cp15_interpreted(target
, 0xee060f10, arm920t
->d_far
, 0x0);
444 arm920t_write_cp15_interpreted(target
, 0xee060f30, arm920t
->i_far
, 0x0);
446 /* read-modify-write CP15 test state register
447 * to reenable I/D-cache linefills */
448 if (arm920t
->preserve_cache
)
450 arm920t_read_cp15_physical(target
,
451 CP15PHYS_TESTSTATE
, &cp15c15
);
452 jtag_execute_queue();
454 arm920t_write_cp15_physical(target
,
455 CP15PHYS_TESTSTATE
, cp15c15
);
459 static const char arm920_not
[] = "target is not an ARM920";
461 static int arm920t_verify_pointer(struct command_context
*cmd_ctx
,
462 struct arm920t_common
*arm920t
)
464 if (arm920t
->common_magic
!= ARM920T_COMMON_MAGIC
) {
465 command_print(cmd_ctx
, arm920_not
);
466 return ERROR_TARGET_INVALID
;
472 /** Logs summary of ARM920 state for a halted target. */
473 int arm920t_arch_state(struct target
*target
)
475 static const char *state
[] =
477 "disabled", "enabled"
480 struct arm920t_common
*arm920t
= target_to_arm920(target
);
483 if (arm920t
->common_magic
!= ARM920T_COMMON_MAGIC
)
485 LOG_ERROR("BUG: %s", arm920_not
);
486 return ERROR_TARGET_INVALID
;
489 armv4_5
= &arm920t
->arm7_9_common
.armv4_5_common
;
491 arm_arch_state(target
);
492 LOG_USER("MMU: %s, D-Cache: %s, I-Cache: %s",
493 state
[arm920t
->armv4_5_mmu
.mmu_enabled
],
494 state
[arm920t
->armv4_5_mmu
.armv4_5_cache
.d_u_cache_enabled
],
495 state
[arm920t
->armv4_5_mmu
.armv4_5_cache
.i_cache_enabled
]);
500 static int arm920_mmu(struct target
*target
, int *enabled
)
502 if (target
->state
!= TARGET_HALTED
) {
503 LOG_ERROR("%s: target not halted", __func__
);
504 return ERROR_TARGET_INVALID
;
507 *enabled
= target_to_arm920(target
)->armv4_5_mmu
.mmu_enabled
;
511 static int arm920_virt2phys(struct target
*target
,
512 uint32_t virt
, uint32_t *phys
)
518 struct arm920t_common
*arm920t
= target_to_arm920(target
);
520 uint32_t ret
= armv4_5_mmu_translate_va(target
, &arm920t
->armv4_5_mmu
, virt
, &type
, &cb
, &domain
, &ap
);
529 /** Reads a buffer, in the specified word size, with current MMU settings. */
530 int arm920t_read_memory(struct target
*target
, uint32_t address
, uint32_t size
, uint32_t count
, uint8_t *buffer
)
534 retval
= arm7_9_read_memory(target
, address
, size
, count
, buffer
);
540 static int arm920t_read_phys_memory(struct target
*target
,
541 uint32_t address
, uint32_t size
,
542 uint32_t count
, uint8_t *buffer
)
544 struct arm920t_common
*arm920t
= target_to_arm920(target
);
546 return armv4_5_mmu_read_physical(target
, &arm920t
->armv4_5_mmu
,
547 address
, size
, count
, buffer
);
550 static int arm920t_write_phys_memory(struct target
*target
,
551 uint32_t address
, uint32_t size
,
552 uint32_t count
, uint8_t *buffer
)
554 struct arm920t_common
*arm920t
= target_to_arm920(target
);
556 return armv4_5_mmu_write_physical(target
, &arm920t
->armv4_5_mmu
,
557 address
, size
, count
, buffer
);
561 /** Writes a buffer, in the specified word size, with current MMU settings. */
562 int arm920t_write_memory(struct target
*target
, uint32_t address
,
563 uint32_t size
, uint32_t count
, uint8_t *buffer
)
566 const uint32_t cache_mask
= ~0x1f; /* cache line size : 32 byte */
567 struct arm920t_common
*arm920t
= target_to_arm920(target
);
569 /* FIX!!!! this should be cleaned up and made much more general. The
570 * plan is to write up and test on arm920t specifically and
571 * then generalize and clean up afterwards. */
572 if (arm920t
->armv4_5_mmu
.mmu_enabled
&& (count
== 1) && ((size
==2) || (size
==4)))
574 /* special case the handling of single word writes to bypass MMU
575 * to allow implementation of breakpoints in memory marked read only
584 * We need physical address and cb
586 pa
= armv4_5_mmu_translate_va(target
, &arm920t
->armv4_5_mmu
, address
, &type
, &cb
, &domain
, &ap
);
592 if (arm920t
->armv4_5_mmu
.armv4_5_cache
.d_u_cache_enabled
)
596 LOG_DEBUG("D-Cache buffered, drain write buffer");
599 * Drain write buffer - MCR p15,0,Rd,c7,c10,4
602 retval
= arm920t_write_cp15_interpreted(target
, ARMV4_5_MCR(15, 0, 0, 7, 10, 4), 0x0, 0);
603 if (retval
!= ERROR_OK
)
610 * Write back memory ? -> clean cache
612 * There is no way for cleaning a data cache line using
613 * cp15 scan chain, so copy the full cache line from
614 * cache to physical memory.
618 LOG_DEBUG("D-Cache in 'write back' mode, flush cache line");
620 retval
= target_read_memory(target
, address
& cache_mask
, 1, sizeof(data
), &data
[0]);
621 if (retval
!= ERROR_OK
)
624 retval
= armv4_5_mmu_write_physical(target
, &arm920t
->armv4_5_mmu
, pa
& cache_mask
, 1, sizeof(data
), &data
[0]);
625 if (retval
!= ERROR_OK
)
633 * Cached ? -> Invalidate data cache using MVA
635 * MCR p15,0,Rd,c7,c6,1
637 LOG_DEBUG("D-Cache enabled, invalidate cache line");
639 retval
= arm920t_write_cp15_interpreted(target
, ARMV4_5_MCR(15, 0, 0, 7, 6, 1), 0x0, address
& cache_mask
);
640 if (retval
!= ERROR_OK
)
645 /* write directly to physical memory bypassing any read only MMU bits, etc. */
646 retval
= armv4_5_mmu_write_physical(target
, &arm920t
->armv4_5_mmu
, pa
, size
, count
, buffer
);
647 if (retval
!= ERROR_OK
)
651 if ((retval
= arm7_9_write_memory(target
, address
, size
, count
, buffer
)) != ERROR_OK
)
655 /* If ICache is enabled, we have to invalidate affected ICache lines
656 * the DCache is forced to write-through, so we don't have to clean it here
658 if (arm920t
->armv4_5_mmu
.armv4_5_cache
.i_cache_enabled
)
662 /* invalidate ICache single entry with MVA
663 * ee070f35 mcr 15, 0, r0, cr7, cr5, {1}
665 LOG_DEBUG("I-Cache enabled, invalidating affected I-Cache line");
666 retval
= arm920t_write_cp15_interpreted(target
, ARMV4_5_MCR(15, 0, 0, 7, 5, 1), 0x0, address
& cache_mask
);
667 if (retval
!= ERROR_OK
)
673 * 8: ee070f15 mcr 15, 0, r0, cr7, cr5, {0}
675 retval
= arm920t_write_cp15_interpreted(target
, ARMV4_5_MCR(15, 0, 0, 7, 5, 0), 0x0, 0x0);
676 if (retval
!= ERROR_OK
)
685 int arm920t_soft_reset_halt(struct target
*target
)
687 int retval
= ERROR_OK
;
688 struct arm920t_common
*arm920t
= target_to_arm920(target
);
689 struct arm7_9_common
*arm7_9
= target_to_arm7_9(target
);
690 struct arm
*armv4_5
= &arm7_9
->armv4_5_common
;
691 struct reg
*dbg_stat
= &arm7_9
->eice_cache
->reg_list
[EICE_DBG_STAT
];
693 if ((retval
= target_halt(target
)) != ERROR_OK
)
698 long long then
= timeval_ms();
700 while (!(timeout
= ((timeval_ms()-then
) > 1000)))
702 if (buf_get_u32(dbg_stat
->value
, EICE_DBG_STATUS_DBGACK
, 1) == 0)
704 embeddedice_read_reg(dbg_stat
);
705 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
713 if (debug_level
>= 3)
715 /* do not eat all CPU, time out after 1 se*/
724 LOG_ERROR("Failed to halt CPU after 1 sec");
725 return ERROR_TARGET_TIMEOUT
;
728 target
->state
= TARGET_HALTED
;
730 /* SVC, ARM state, IRQ and FIQ disabled */
733 cpsr
= buf_get_u32(armv4_5
->cpsr
->value
, 0, 32);
736 arm_set_cpsr(armv4_5
, cpsr
);
737 armv4_5
->cpsr
->dirty
= 1;
739 /* start fetching from 0x0 */
740 buf_set_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32, 0x0);
741 armv4_5
->core_cache
->reg_list
[15].dirty
= 1;
742 armv4_5
->core_cache
->reg_list
[15].valid
= 1;
744 arm920t_disable_mmu_caches(target
, 1, 1, 1);
745 arm920t
->armv4_5_mmu
.mmu_enabled
= 0;
746 arm920t
->armv4_5_mmu
.armv4_5_cache
.d_u_cache_enabled
= 0;
747 arm920t
->armv4_5_mmu
.armv4_5_cache
.i_cache_enabled
= 0;
749 if ((retval
= target_call_event_callbacks(target
, TARGET_EVENT_HALTED
)) != ERROR_OK
)
757 /* FIXME remove forward decls */
758 static int arm920t_mrc(struct target
*target
, int cpnum
,
759 uint32_t op1
, uint32_t op2
,
760 uint32_t CRn
, uint32_t CRm
,
762 static int arm920t_mcr(struct target
*target
, int cpnum
,
763 uint32_t op1
, uint32_t op2
,
764 uint32_t CRn
, uint32_t CRm
,
767 int arm920t_init_arch_info(struct target
*target
, struct arm920t_common
*arm920t
, struct jtag_tap
*tap
)
769 struct arm7_9_common
*arm7_9
= &arm920t
->arm7_9_common
;
771 arm7_9
->armv4_5_common
.mrc
= arm920t_mrc
;
772 arm7_9
->armv4_5_common
.mcr
= arm920t_mcr
;
774 /* initialize arm7/arm9 specific info (including armv4_5) */
775 arm9tdmi_init_arch_info(target
, arm7_9
, tap
);
777 arm920t
->common_magic
= ARM920T_COMMON_MAGIC
;
779 arm7_9
->post_debug_entry
= arm920t_post_debug_entry
;
780 arm7_9
->pre_restore_context
= arm920t_pre_restore_context
;
782 arm920t
->armv4_5_mmu
.armv4_5_cache
.ctype
= -1;
783 arm920t
->armv4_5_mmu
.get_ttb
= arm920t_get_ttb
;
784 arm920t
->armv4_5_mmu
.read_memory
= arm7_9_read_memory
;
785 arm920t
->armv4_5_mmu
.write_memory
= arm7_9_write_memory
;
786 arm920t
->armv4_5_mmu
.disable_mmu_caches
= arm920t_disable_mmu_caches
;
787 arm920t
->armv4_5_mmu
.enable_mmu_caches
= arm920t_enable_mmu_caches
;
788 arm920t
->armv4_5_mmu
.has_tiny_pages
= 1;
789 arm920t
->armv4_5_mmu
.mmu_enabled
= 0;
791 /* disabling linefills leads to lockups, so keep them enabled for now
792 * this doesn't affect correctness, but might affect timing issues, if
793 * important data is evicted from the cache during the debug session
795 arm920t
->preserve_cache
= 0;
797 /* override hw single-step capability from ARM9TDMI */
798 arm7_9
->has_single_step
= 1;
803 static int arm920t_target_create(struct target
*target
, Jim_Interp
*interp
)
805 struct arm920t_common
*arm920t
= calloc(1,sizeof(struct arm920t_common
));
807 return arm920t_init_arch_info(target
, arm920t
, target
->tap
);
810 COMMAND_HANDLER(arm920t_handle_read_cache_command
)
812 int retval
= ERROR_OK
;
813 struct target
*target
= get_current_target(CMD_CTX
);
814 struct arm920t_common
*arm920t
= target_to_arm920(target
);
815 struct arm7_9_common
*arm7_9
= target_to_arm7_9(target
);
816 struct arm
*armv4_5
= &arm7_9
->armv4_5_common
;
818 uint32_t cp15_ctrl
, cp15_ctrl_saved
;
820 uint32_t *regs_p
[16];
821 uint32_t C15_C_D_Ind
, C15_C_I_Ind
;
824 struct arm920t_cache_line d_cache
[8][64], i_cache
[8][64];
828 retval
= arm920t_verify_pointer(CMD_CTX
, arm920t
);
829 if (retval
!= ERROR_OK
)
834 command_print(CMD_CTX
, "usage: arm920t read_cache <filename>");
838 if ((output
= fopen(CMD_ARGV
[0], "w")) == NULL
)
840 LOG_DEBUG("error opening cache content file");
844 for (i
= 0; i
< 16; i
++)
845 regs_p
[i
] = ®s
[i
];
847 /* disable MMU and Caches */
848 arm920t_read_cp15_physical(target
, CP15PHYS_CTRL
, &cp15_ctrl
);
849 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
853 cp15_ctrl_saved
= cp15_ctrl
;
854 cp15_ctrl
&= ~(ARMV4_5_MMU_ENABLED
| ARMV4_5_D_U_CACHE_ENABLED
| ARMV4_5_I_CACHE_ENABLED
);
855 arm920t_write_cp15_physical(target
, CP15PHYS_CTRL
, cp15_ctrl
);
857 /* read CP15 test state register */
858 arm920t_read_cp15_physical(target
, CP15PHYS_TESTSTATE
, &cp15c15
);
859 jtag_execute_queue();
861 /* read DCache content */
862 fprintf(output
, "DCache:\n");
864 /* go through segments 0 to nsets (8 on ARM920T, 4 on ARM922T) */
865 for (segment
= 0; segment
< arm920t
->armv4_5_mmu
.armv4_5_cache
.d_u_size
.nsets
; segment
++)
867 fprintf(output
, "\nsegment: %i\n----------", segment
);
869 /* Ra: r0 = SBZ(31:8):segment(7:5):SBZ(4:0) */
870 regs
[0] = 0x0 | (segment
<< 5);
871 arm9tdmi_write_core_regs(target
, 0x1, regs
);
873 /* set interpret mode */
875 arm920t_write_cp15_physical(target
,
876 CP15PHYS_TESTSTATE
, cp15c15
);
878 /* D CAM Read, loads current victim into C15.C.D.Ind */
879 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,2,0,15,6,2), ARMV4_5_LDR(1, 0));
881 /* read current victim */
882 arm920t_read_cp15_physical(target
,
883 CP15PHYS_DCACHE_IDX
, &C15_C_D_Ind
);
885 /* clear interpret mode */
887 arm920t_write_cp15_physical(target
,
888 CP15PHYS_TESTSTATE
, cp15c15
);
890 for (index
= 0; index
< 64; index
++)
892 /* Ra: r0 = index(31:26):SBZ(25:8):segment(7:5):SBZ(4:0) */
893 regs
[0] = 0x0 | (segment
<< 5) | (index
<< 26);
894 arm9tdmi_write_core_regs(target
, 0x1, regs
);
896 /* set interpret mode */
898 arm920t_write_cp15_physical(target
,
899 CP15PHYS_TESTSTATE
, cp15c15
);
901 /* Write DCache victim */
902 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,0,0,9,1,0), ARMV4_5_LDR(1, 0));
905 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,2,0,15,10,2), ARMV4_5_LDMIA(0, 0x1fe, 0, 0));
908 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,2,0,15,6,2), ARMV4_5_LDR(9, 0));
910 /* clear interpret mode */
912 arm920t_write_cp15_physical(target
,
913 CP15PHYS_TESTSTATE
, cp15c15
);
915 /* read D RAM and CAM content */
916 arm9tdmi_read_core_regs(target
, 0x3fe, regs_p
);
917 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
922 d_cache
[segment
][index
].cam
= regs
[9];
925 regs
[9] &= 0xfffffffe;
926 fprintf(output
, "\nsegment: %i, index: %i, CAM: 0x%8.8" PRIx32
", content (%s):\n", segment
, index
, regs
[9], (regs
[9] & 0x10) ? "valid" : "invalid");
928 for (i
= 1; i
< 9; i
++)
930 d_cache
[segment
][index
].data
[i
] = regs
[i
];
931 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
,
943 CP15PHYS_TESTSTATE
, cp15c15
);
945 /* Write DCache victim */
946 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,0,0,9,1,0), ARMV4_5_LDR(1, 0));
948 /* clear interpret mode */
950 arm920t_write_cp15_physical(target
,
951 CP15PHYS_TESTSTATE
, cp15c15
);
954 /* read ICache content */
955 fprintf(output
, "ICache:\n");
957 /* go through segments 0 to nsets (8 on ARM920T, 4 on ARM922T) */
958 for (segment
= 0; segment
< arm920t
->armv4_5_mmu
.armv4_5_cache
.d_u_size
.nsets
; segment
++)
960 fprintf(output
, "segment: %i\n----------", segment
);
962 /* Ra: r0 = SBZ(31:8):segment(7:5):SBZ(4:0) */
963 regs
[0] = 0x0 | (segment
<< 5);
964 arm9tdmi_write_core_regs(target
, 0x1, regs
);
966 /* set interpret mode */
968 arm920t_write_cp15_physical(target
,
969 CP15PHYS_TESTSTATE
, cp15c15
);
971 /* I CAM Read, loads current victim into C15.C.I.Ind */
972 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,2,0,15,5,2), ARMV4_5_LDR(1, 0));
974 /* read current victim */
975 arm920t_read_cp15_physical(target
, CP15PHYS_ICACHE_IDX
,
978 /* clear interpret mode */
980 arm920t_write_cp15_physical(target
,
981 CP15PHYS_TESTSTATE
, cp15c15
);
983 for (index
= 0; index
< 64; index
++)
985 /* Ra: r0 = index(31:26):SBZ(25:8):segment(7:5):SBZ(4:0) */
986 regs
[0] = 0x0 | (segment
<< 5) | (index
<< 26);
987 arm9tdmi_write_core_regs(target
, 0x1, regs
);
989 /* set interpret mode */
991 arm920t_write_cp15_physical(target
,
992 CP15PHYS_TESTSTATE
, cp15c15
);
994 /* Write ICache victim */
995 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,0,0,9,1,1), ARMV4_5_LDR(1, 0));
998 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,2,0,15,9,2), ARMV4_5_LDMIA(0, 0x1fe, 0, 0));
1001 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,2,0,15,5,2), ARMV4_5_LDR(9, 0));
1003 /* clear interpret mode */
1005 arm920t_write_cp15_physical(target
,
1006 CP15PHYS_TESTSTATE
, cp15c15
);
1008 /* read I RAM and CAM content */
1009 arm9tdmi_read_core_regs(target
, 0x3fe, regs_p
);
1010 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1015 i_cache
[segment
][index
].cam
= regs
[9];
1018 regs
[9] &= 0xfffffffe;
1019 fprintf(output
, "\nsegment: %i, index: %i, CAM: 0x%8.8" PRIx32
", content (%s):\n", segment
, index
, regs
[9], (regs
[9] & 0x10) ? "valid" : "invalid");
1021 for (i
= 1; i
< 9; i
++)
1023 i_cache
[segment
][index
].data
[i
] = regs
[i
];
1024 fprintf(output
, "%i: 0x%8.8" PRIx32
"\n", i
-1, regs
[i
]);
1028 /* Ra: r0 = index(31:26):SBZ(25:8):segment(7:5):SBZ(4:0) */
1029 regs
[0] = 0x0 | (segment
<< 5) | (C15_C_D_Ind
<< 26);
1030 arm9tdmi_write_core_regs(target
, 0x1, regs
);
1032 /* set interpret mode */
1034 arm920t_write_cp15_physical(target
,
1035 CP15PHYS_TESTSTATE
, cp15c15
);
1037 /* Write ICache victim */
1038 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,0,0,9,1,1), ARMV4_5_LDR(1, 0));
1040 /* clear interpret mode */
1042 arm920t_write_cp15_physical(target
,
1043 CP15PHYS_TESTSTATE
, cp15c15
);
1046 /* restore CP15 MMU and Cache settings */
1047 arm920t_write_cp15_physical(target
, CP15PHYS_CTRL
, cp15_ctrl_saved
);
1049 command_print(CMD_CTX
, "cache content successfully output to %s", CMD_ARGV
[0]);
1053 if (!is_arm_mode(armv4_5
->core_mode
))
1056 /* force writeback of the valid data */
1057 r
= armv4_5
->core_cache
->reg_list
;
1058 r
[0].dirty
= r
[0].valid
;
1059 r
[1].dirty
= r
[1].valid
;
1060 r
[2].dirty
= r
[2].valid
;
1061 r
[3].dirty
= r
[3].valid
;
1062 r
[4].dirty
= r
[4].valid
;
1063 r
[5].dirty
= r
[5].valid
;
1064 r
[6].dirty
= r
[6].valid
;
1065 r
[7].dirty
= r
[7].valid
;
1067 r
= arm_reg_current(armv4_5
, 8);
1068 r
->dirty
= r
->valid
;
1070 r
= arm_reg_current(armv4_5
, 9);
1071 r
->dirty
= r
->valid
;
1076 COMMAND_HANDLER(arm920t_handle_read_mmu_command
)
1078 int retval
= ERROR_OK
;
1079 struct target
*target
= get_current_target(CMD_CTX
);
1080 struct arm920t_common
*arm920t
= target_to_arm920(target
);
1081 struct arm7_9_common
*arm7_9
= target_to_arm7_9(target
);
1082 struct arm
*armv4_5
= &arm7_9
->armv4_5_common
;
1084 uint32_t cp15_ctrl
, cp15_ctrl_saved
;
1086 uint32_t *regs_p
[16];
1089 uint32_t Dlockdown
, Ilockdown
;
1090 struct arm920t_tlb_entry d_tlb
[64], i_tlb
[64];
1094 retval
= arm920t_verify_pointer(CMD_CTX
, arm920t
);
1095 if (retval
!= ERROR_OK
)
1100 command_print(CMD_CTX
, "usage: arm920t read_mmu <filename>");
1104 if ((output
= fopen(CMD_ARGV
[0], "w")) == NULL
)
1106 LOG_DEBUG("error opening mmu content file");
1110 for (i
= 0; i
< 16; i
++)
1111 regs_p
[i
] = ®s
[i
];
1113 /* disable MMU and Caches */
1114 arm920t_read_cp15_physical(target
, CP15PHYS_CTRL
, &cp15_ctrl
);
1115 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1119 cp15_ctrl_saved
= cp15_ctrl
;
1120 cp15_ctrl
&= ~(ARMV4_5_MMU_ENABLED
| ARMV4_5_D_U_CACHE_ENABLED
| ARMV4_5_I_CACHE_ENABLED
);
1121 arm920t_write_cp15_physical(target
, CP15PHYS_CTRL
, cp15_ctrl
);
1123 /* read CP15 test state register */
1124 arm920t_read_cp15_physical(target
, CP15PHYS_TESTSTATE
, &cp15c15
);
1125 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1130 /* prepare reading D TLB content
1133 /* set interpret mode */
1135 arm920t_write_cp15_physical(target
, CP15PHYS_TESTSTATE
, cp15c15
);
1137 /* Read D TLB lockdown */
1138 arm920t_execute_cp15(target
, ARMV4_5_MRC(15,0,0,10,0,0), ARMV4_5_LDR(1, 0));
1140 /* clear interpret mode */
1142 arm920t_write_cp15_physical(target
, CP15PHYS_TESTSTATE
, cp15c15
);
1144 /* read D TLB lockdown stored to r1 */
1145 arm9tdmi_read_core_regs(target
, 0x2, regs_p
);
1146 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1150 Dlockdown
= regs
[1];
1152 for (victim
= 0; victim
< 64; victim
+= 8)
1154 /* new lockdown value: base[31:26]:victim[25:20]:SBZ[19:1]:p[0]
1155 * base remains unchanged, victim goes through entries 0 to 63 */
1156 regs
[1] = (Dlockdown
& 0xfc000000) | (victim
<< 20);
1157 arm9tdmi_write_core_regs(target
, 0x2, regs
);
1159 /* set interpret mode */
1161 arm920t_write_cp15_physical(target
,
1162 CP15PHYS_TESTSTATE
, cp15c15
);
1164 /* Write D TLB lockdown */
1165 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,0,0,10,0,0), ARMV4_5_STR(1, 0));
1167 /* Read D TLB CAM */
1168 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,4,0,15,6,4), ARMV4_5_LDMIA(0, 0x3fc, 0, 0));
1170 /* clear interpret mode */
1172 arm920t_write_cp15_physical(target
,
1173 CP15PHYS_TESTSTATE
, cp15c15
);
1175 /* read D 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 d_tlb
[victim
+ i
].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
,
1196 CP15PHYS_TESTSTATE
, cp15c15
);
1198 /* Write D TLB lockdown */
1199 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,0,0,10,0,0), ARMV4_5_STR(1, 0));
1201 /* Read D TLB RAM1 */
1202 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,4,0,15,10,4), ARMV4_5_LDR(2,0));
1204 /* Read D TLB RAM2 */
1205 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,4,0,15,2,5), ARMV4_5_LDR(3,0));
1207 /* clear interpret mode */
1209 arm920t_write_cp15_physical(target
,
1210 CP15PHYS_TESTSTATE
, cp15c15
);
1212 /* read D TLB RAM content stored to r2 and r3 */
1213 arm9tdmi_read_core_regs(target
, 0xc, regs_p
);
1214 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1219 d_tlb
[victim
].ram1
= regs
[2];
1220 d_tlb
[victim
].ram2
= regs
[3];
1223 /* restore D TLB lockdown */
1224 regs
[1] = Dlockdown
;
1225 arm9tdmi_write_core_regs(target
, 0x2, regs
);
1227 /* Write D TLB lockdown */
1228 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,0,0,10,0,0), ARMV4_5_STR(1, 0));
1230 /* prepare reading I TLB content
1233 /* set interpret mode */
1235 arm920t_write_cp15_physical(target
, CP15PHYS_TESTSTATE
, cp15c15
);
1237 /* Read I TLB lockdown */
1238 arm920t_execute_cp15(target
, ARMV4_5_MRC(15,0,0,10,0,1), ARMV4_5_LDR(1, 0));
1240 /* clear interpret mode */
1242 arm920t_write_cp15_physical(target
, CP15PHYS_TESTSTATE
, cp15c15
);
1244 /* read I TLB lockdown stored to r1 */
1245 arm9tdmi_read_core_regs(target
, 0x2, regs_p
);
1246 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1250 Ilockdown
= regs
[1];
1252 for (victim
= 0; victim
< 64; victim
+= 8)
1254 /* new lockdown value: base[31:26]:victim[25:20]:SBZ[19:1]:p[0]
1255 * base remains unchanged, victim goes through entries 0 to 63 */
1256 regs
[1] = (Ilockdown
& 0xfc000000) | (victim
<< 20);
1257 arm9tdmi_write_core_regs(target
, 0x2, regs
);
1259 /* set interpret mode */
1261 arm920t_write_cp15_physical(target
,
1262 CP15PHYS_TESTSTATE
, cp15c15
);
1264 /* Write I TLB lockdown */
1265 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,0,0,10,0,1), ARMV4_5_STR(1, 0));
1267 /* Read I TLB CAM */
1268 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,4,0,15,5,4), ARMV4_5_LDMIA(0, 0x3fc, 0, 0));
1270 /* clear interpret mode */
1272 arm920t_write_cp15_physical(target
,
1273 CP15PHYS_TESTSTATE
, cp15c15
);
1275 /* read I TLB CAM content stored to r2-r9 */
1276 arm9tdmi_read_core_regs(target
, 0x3fc, regs_p
);
1277 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1282 for (i
= 0; i
< 8; i
++)
1283 i_tlb
[i
+ victim
].cam
= regs
[i
+ 2];
1286 for (victim
= 0; victim
< 64; victim
++)
1288 /* new lockdown value: base[31:26]:victim[25:20]:SBZ[19:1]:p[0]
1289 * base remains unchanged, victim goes through entries 0 to 63 */
1290 regs
[1] = (Dlockdown
& 0xfc000000) | (victim
<< 20);
1291 arm9tdmi_write_core_regs(target
, 0x2, regs
);
1293 /* set interpret mode */
1295 arm920t_write_cp15_physical(target
,
1296 CP15PHYS_TESTSTATE
, cp15c15
);
1298 /* Write I TLB lockdown */
1299 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,0,0,10,0,1), ARMV4_5_STR(1, 0));
1301 /* Read I TLB RAM1 */
1302 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,4,0,15,9,4), ARMV4_5_LDR(2,0));
1304 /* Read I TLB RAM2 */
1305 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,4,0,15,1,5), ARMV4_5_LDR(3,0));
1307 /* clear interpret mode */
1309 arm920t_write_cp15_physical(target
,
1310 CP15PHYS_TESTSTATE
, cp15c15
);
1312 /* read I TLB RAM content stored to r2 and r3 */
1313 arm9tdmi_read_core_regs(target
, 0xc, regs_p
);
1314 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1319 i_tlb
[victim
].ram1
= regs
[2];
1320 i_tlb
[victim
].ram2
= regs
[3];
1323 /* restore I TLB lockdown */
1324 regs
[1] = Ilockdown
;
1325 arm9tdmi_write_core_regs(target
, 0x2, regs
);
1327 /* Write I TLB lockdown */
1328 arm920t_execute_cp15(target
, ARMV4_5_MCR(15,0,0,10,0,1), ARMV4_5_STR(1, 0));
1330 /* restore CP15 MMU and Cache settings */
1331 arm920t_write_cp15_physical(target
, CP15PHYS_CTRL
, cp15_ctrl_saved
);
1333 /* output data to file */
1334 fprintf(output
, "D TLB content:\n");
1335 for (i
= 0; i
< 64; i
++)
1337 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)");
1340 fprintf(output
, "\n\nI TLB content:\n");
1341 for (i
= 0; i
< 64; i
++)
1343 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)");
1346 command_print(CMD_CTX
, "mmu content successfully output to %s", CMD_ARGV
[0]);
1350 if (!is_arm_mode(armv4_5
->core_mode
))
1353 /* force writeback of the valid data */
1354 r
= armv4_5
->core_cache
->reg_list
;
1355 r
[0].dirty
= r
[0].valid
;
1356 r
[1].dirty
= r
[1].valid
;
1357 r
[2].dirty
= r
[2].valid
;
1358 r
[3].dirty
= r
[3].valid
;
1359 r
[4].dirty
= r
[4].valid
;
1360 r
[5].dirty
= r
[5].valid
;
1361 r
[6].dirty
= r
[6].valid
;
1362 r
[7].dirty
= r
[7].valid
;
1364 r
= arm_reg_current(armv4_5
, 8);
1365 r
->dirty
= r
->valid
;
1367 r
= arm_reg_current(armv4_5
, 9);
1368 r
->dirty
= r
->valid
;
1373 COMMAND_HANDLER(arm920t_handle_cp15_command
)
1376 struct target
*target
= get_current_target(CMD_CTX
);
1377 struct arm920t_common
*arm920t
= target_to_arm920(target
);
1379 retval
= arm920t_verify_pointer(CMD_CTX
, arm920t
);
1380 if (retval
!= ERROR_OK
)
1383 if (target
->state
!= TARGET_HALTED
)
1385 command_print(CMD_CTX
, "target must be stopped for \"%s\" command", CMD_NAME
);
1389 /* one or more argument, access a single register (write if second argument is given */
1393 COMMAND_PARSE_NUMBER(int, CMD_ARGV
[0], address
);
1398 if ((retval
= arm920t_read_cp15_physical(target
, address
, &value
)) != ERROR_OK
)
1400 command_print(CMD_CTX
, "couldn't access reg %i", address
);
1403 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1408 command_print(CMD_CTX
, "%i: %8.8" PRIx32
"", address
, value
);
1410 else if (CMD_ARGC
== 2)
1413 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[1], value
);
1414 if ((retval
= arm920t_write_cp15_physical(target
, address
, value
)) != ERROR_OK
)
1416 command_print(CMD_CTX
, "couldn't access reg %i", address
);
1419 command_print(CMD_CTX
, "%i: %8.8" PRIx32
"", address
, value
);
1426 COMMAND_HANDLER(arm920t_handle_cp15i_command
)
1429 struct target
*target
= get_current_target(CMD_CTX
);
1430 struct arm920t_common
*arm920t
= target_to_arm920(target
);
1432 retval
= arm920t_verify_pointer(CMD_CTX
, arm920t
);
1433 if (retval
!= ERROR_OK
)
1437 if (target
->state
!= TARGET_HALTED
)
1439 command_print(CMD_CTX
, "target must be stopped for \"%s\" command", CMD_NAME
);
1443 /* one or more argument, access a single register (write if second argument is given */
1447 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[0], opcode
);
1452 if ((retval
= arm920t_read_cp15_interpreted(target
, opcode
, 0x0, &value
)) != ERROR_OK
)
1454 command_print(CMD_CTX
, "couldn't execute %8.8" PRIx32
"", opcode
);
1458 command_print(CMD_CTX
, "%8.8" PRIx32
": %8.8" PRIx32
"", opcode
, value
);
1460 else if (CMD_ARGC
== 2)
1463 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[1], value
);
1464 if ((retval
= arm920t_write_cp15_interpreted(target
, opcode
, value
, 0)) != ERROR_OK
)
1466 command_print(CMD_CTX
, "couldn't execute %8.8" PRIx32
"", opcode
);
1469 command_print(CMD_CTX
, "%8.8" PRIx32
": %8.8" PRIx32
"", opcode
, value
);
1471 else if (CMD_ARGC
== 3)
1474 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[1], value
);
1476 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[2], address
);
1477 if ((retval
= arm920t_write_cp15_interpreted(target
, opcode
, value
, address
)) != ERROR_OK
)
1479 command_print(CMD_CTX
, "couldn't execute %8.8" PRIx32
"", opcode
);
1482 command_print(CMD_CTX
, "%8.8" PRIx32
": %8.8" PRIx32
" %8.8" PRIx32
"", opcode
, value
, address
);
1487 command_print(CMD_CTX
, "usage: arm920t cp15i <opcode> [value] [address]");
1493 COMMAND_HANDLER(arm920t_handle_cache_info_command
)
1496 struct target
*target
= get_current_target(CMD_CTX
);
1497 struct arm920t_common
*arm920t
= target_to_arm920(target
);
1499 retval
= arm920t_verify_pointer(CMD_CTX
, arm920t
);
1500 if (retval
!= ERROR_OK
)
1503 return armv4_5_handle_cache_info_command(CMD_CTX
, &arm920t
->armv4_5_mmu
.armv4_5_cache
);
1507 static int arm920t_mrc(struct target
*target
, int cpnum
,
1508 uint32_t op1
, uint32_t op2
,
1509 uint32_t CRn
, uint32_t CRm
,
1514 LOG_ERROR("Only cp15 is supported");
1519 return arm920t_read_cp15_interpreted(target
,
1520 ARMV4_5_MRC(cpnum
, op1
, 0, CRn
, CRm
, op2
),
1524 static int arm920t_mcr(struct target
*target
, int cpnum
,
1525 uint32_t op1
, uint32_t op2
,
1526 uint32_t CRn
, uint32_t CRm
,
1531 LOG_ERROR("Only cp15 is supported");
1535 /* write "from" r0 */
1536 return arm920t_write_cp15_interpreted(target
,
1537 ARMV4_5_MCR(cpnum
, op1
, 0, CRn
, CRm
, op2
),
1541 static const struct command_registration arm920t_exec_command_handlers
[] = {
1544 .handler
= arm920t_handle_cp15_command
,
1545 .mode
= COMMAND_EXEC
,
1546 .help
= "display/modify cp15 register",
1547 .usage
= "regnum [value]",
1551 .handler
= arm920t_handle_cp15i_command
,
1552 .mode
= COMMAND_EXEC
,
1553 /* prefer using less error-prone "arm mcr" or "arm mrc" */
1554 .help
= "display/modify cp15 register using ARM opcode"
1556 .usage
= "instruction [value [address]]",
1559 .name
= "cache_info",
1560 .handler
= arm920t_handle_cache_info_command
,
1561 .mode
= COMMAND_EXEC
,
1562 .help
= "display information about target caches",
1565 .name
= "read_cache",
1566 .handler
= arm920t_handle_read_cache_command
,
1567 .mode
= COMMAND_EXEC
,
1568 .help
= "dump I/D cache content to file",
1569 .usage
= "filename",
1573 .handler
= arm920t_handle_read_mmu_command
,
1574 .mode
= COMMAND_EXEC
,
1575 .help
= "dump I/D mmu content to file",
1576 .usage
= "filename",
1578 COMMAND_REGISTRATION_DONE
1580 const struct command_registration arm920t_command_handlers
[] = {
1582 .chain
= arm9tdmi_command_handlers
,
1586 .mode
= COMMAND_ANY
,
1587 .help
= "arm920t command group",
1588 .chain
= arm920t_exec_command_handlers
,
1590 COMMAND_REGISTRATION_DONE
1593 /** Holds methods for ARM920 targets. */
1594 struct target_type arm920t_target
=
1598 .poll
= arm7_9_poll
,
1599 .arch_state
= arm920t_arch_state
,
1601 .target_request_data
= arm7_9_target_request_data
,
1603 .halt
= arm7_9_halt
,
1604 .resume
= arm7_9_resume
,
1605 .step
= arm7_9_step
,
1607 .assert_reset
= arm7_9_assert_reset
,
1608 .deassert_reset
= arm7_9_deassert_reset
,
1609 .soft_reset_halt
= arm920t_soft_reset_halt
,
1611 .get_gdb_reg_list
= arm_get_gdb_reg_list
,
1613 .read_memory
= arm920t_read_memory
,
1614 .write_memory
= arm920t_write_memory
,
1615 .read_phys_memory
= arm920t_read_phys_memory
,
1616 .write_phys_memory
= arm920t_write_phys_memory
,
1618 .virt2phys
= arm920_virt2phys
,
1620 .bulk_write_memory
= arm7_9_bulk_write_memory
,
1622 .checksum_memory
= arm_checksum_memory
,
1623 .blank_check_memory
= arm_blank_check_memory
,
1625 .run_algorithm
= armv4_5_run_algorithm
,
1627 .add_breakpoint
= arm7_9_add_breakpoint
,
1628 .remove_breakpoint
= arm7_9_remove_breakpoint
,
1629 .add_watchpoint
= arm7_9_add_watchpoint
,
1630 .remove_watchpoint
= arm7_9_remove_watchpoint
,
1632 .commands
= arm920t_command_handlers
,
1633 .target_create
= arm920t_target_create
,
1634 .init_target
= arm9tdmi_init_target
,
1635 .examine
= arm7_9_examine
,
1636 .check_reset
= arm7_9_check_reset
,