1 /***************************************************************************
2 * Copyright (C) 2006, 2007 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2007,2008 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
8 * This program is free software; you can redistribute it and/or modify *
9 * it under the terms of the GNU General Public License as published by *
10 * the Free Software Foundation; either version 2 of the License, or *
11 * (at your option) any later version. *
13 * This program is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License for more details. *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program; if not, write to the *
20 * Free Software Foundation, Inc., *
21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
22 ***************************************************************************/
27 #include "replacements.h"
31 #include "arm7_9_common.h"
35 #include "arm_simulator.h"
36 #include "arm_disassembler.h"
39 #include "binarybuffer.h"
40 #include "time_support.h"
41 #include "breakpoints.h"
47 #include <sys/types.h>
53 int xscale_register_commands(struct command_context_s
*cmd_ctx
);
55 /* forward declarations */
56 int xscale_target_create(struct target_s
*target
, Jim_Interp
*interp
);
57 int xscale_init_target(struct command_context_s
*cmd_ctx
, struct target_s
*target
);
58 int xscale_quit(void);
60 int xscale_arch_state(struct target_s
*target
);
61 int xscale_poll(target_t
*target
);
62 int xscale_halt(target_t
*target
);
63 int xscale_resume(struct target_s
*target
, int current
, u32 address
, int handle_breakpoints
, int debug_execution
);
64 int xscale_step(struct target_s
*target
, int current
, u32 address
, int handle_breakpoints
);
65 int xscale_debug_entry(target_t
*target
);
66 int xscale_restore_context(target_t
*target
);
68 int xscale_assert_reset(target_t
*target
);
69 int xscale_deassert_reset(target_t
*target
);
70 int xscale_soft_reset_halt(struct target_s
*target
);
72 int xscale_set_reg_u32(reg_t
*reg
, u32 value
);
74 int xscale_read_core_reg(struct target_s
*target
, int num
, enum armv4_5_mode mode
);
75 int xscale_write_core_reg(struct target_s
*target
, int num
, enum armv4_5_mode mode
, u32 value
);
77 int xscale_read_memory(struct target_s
*target
, u32 address
, u32 size
, u32 count
, u8
*buffer
);
78 int xscale_write_memory(struct target_s
*target
, u32 address
, u32 size
, u32 count
, u8
*buffer
);
79 int xscale_bulk_write_memory(target_t
*target
, u32 address
, u32 count
, u8
*buffer
);
81 int xscale_add_breakpoint(struct target_s
*target
, breakpoint_t
*breakpoint
);
82 int xscale_remove_breakpoint(struct target_s
*target
, breakpoint_t
*breakpoint
);
83 int xscale_set_breakpoint(struct target_s
*target
, breakpoint_t
*breakpoint
);
84 int xscale_unset_breakpoint(struct target_s
*target
, breakpoint_t
*breakpoint
);
85 int xscale_add_watchpoint(struct target_s
*target
, watchpoint_t
*watchpoint
);
86 int xscale_remove_watchpoint(struct target_s
*target
, watchpoint_t
*watchpoint
);
87 void xscale_enable_watchpoints(struct target_s
*target
);
88 void xscale_enable_breakpoints(struct target_s
*target
);
89 static int xscale_virt2phys(struct target_s
*target
, u32
virtual, u32
*physical
);
90 static int xscale_mmu(struct target_s
*target
, int *enabled
);
92 int xscale_read_trace(target_t
*target
);
94 target_type_t xscale_target
=
99 .arch_state
= xscale_arch_state
,
101 .target_request_data
= NULL
,
104 .resume
= xscale_resume
,
107 .assert_reset
= xscale_assert_reset
,
108 .deassert_reset
= xscale_deassert_reset
,
109 .soft_reset_halt
= xscale_soft_reset_halt
,
111 .get_gdb_reg_list
= armv4_5_get_gdb_reg_list
,
113 .read_memory
= xscale_read_memory
,
114 .write_memory
= xscale_write_memory
,
115 .bulk_write_memory
= xscale_bulk_write_memory
,
116 .checksum_memory
= arm7_9_checksum_memory
,
117 .blank_check_memory
= arm7_9_blank_check_memory
,
119 .run_algorithm
= armv4_5_run_algorithm
,
121 .add_breakpoint
= xscale_add_breakpoint
,
122 .remove_breakpoint
= xscale_remove_breakpoint
,
123 .add_watchpoint
= xscale_add_watchpoint
,
124 .remove_watchpoint
= xscale_remove_watchpoint
,
126 .register_commands
= xscale_register_commands
,
127 .target_create
= xscale_target_create
,
128 .init_target
= xscale_init_target
,
131 .virt2phys
= xscale_virt2phys
,
135 char* xscale_reg_list
[] =
137 "XSCALE_MAINID", /* 0 */
147 "XSCALE_IBCR0", /* 10 */
157 "XSCALE_RX", /* 20 */
161 xscale_reg_t xscale_reg_arch_info
[] =
163 {XSCALE_MAINID
, NULL
},
164 {XSCALE_CACHETYPE
, NULL
},
166 {XSCALE_AUXCTRL
, NULL
},
172 {XSCALE_CPACCESS
, NULL
},
173 {XSCALE_IBCR0
, NULL
},
174 {XSCALE_IBCR1
, NULL
},
177 {XSCALE_DBCON
, NULL
},
178 {XSCALE_TBREG
, NULL
},
179 {XSCALE_CHKPT0
, NULL
},
180 {XSCALE_CHKPT1
, NULL
},
181 {XSCALE_DCSR
, NULL
}, /* DCSR accessed via JTAG or SW */
182 {-1, NULL
}, /* TX accessed via JTAG */
183 {-1, NULL
}, /* RX accessed via JTAG */
184 {-1, NULL
}, /* TXRXCTRL implicit access via JTAG */
187 int xscale_reg_arch_type
= -1;
189 int xscale_get_reg(reg_t
*reg
);
190 int xscale_set_reg(reg_t
*reg
, u8
*buf
);
192 int xscale_get_arch_pointers(target_t
*target
, armv4_5_common_t
**armv4_5_p
, xscale_common_t
**xscale_p
)
194 armv4_5_common_t
*armv4_5
= target
->arch_info
;
195 xscale_common_t
*xscale
= armv4_5
->arch_info
;
197 if (armv4_5
->common_magic
!= ARMV4_5_COMMON_MAGIC
)
199 LOG_ERROR("target isn't an XScale target");
203 if (xscale
->common_magic
!= XSCALE_COMMON_MAGIC
)
205 LOG_ERROR("target isn't an XScale target");
209 *armv4_5_p
= armv4_5
;
215 int xscale_jtag_set_instr(jtag_tap_t
*tap
, u32 new_instr
)
220 if (buf_get_u32(tap
->cur_instr
, 0, tap
->ir_length
) != new_instr
)
225 field
.num_bits
= tap
->ir_length
;
226 field
.out_value
= calloc(CEIL(field
.num_bits
, 8), 1);
227 buf_set_u32(field
.out_value
, 0, field
.num_bits
, new_instr
);
228 field
.out_mask
= NULL
;
229 field
.in_value
= NULL
;
230 jtag_set_check_value(&field
, tap
->expected
, tap
->expected_mask
, NULL
);
232 jtag_add_ir_scan(1, &field
, TAP_INVALID
);
234 free(field
.out_value
);
240 int xscale_read_dcsr(target_t
*target
)
242 armv4_5_common_t
*armv4_5
= target
->arch_info
;
243 xscale_common_t
*xscale
= armv4_5
->arch_info
;
247 scan_field_t fields
[3];
249 u8 field0_check_value
= 0x2;
250 u8 field0_check_mask
= 0x7;
252 u8 field2_check_value
= 0x0;
253 u8 field2_check_mask
= 0x1;
255 jtag_add_end_state(TAP_DRPAUSE
);
256 xscale_jtag_set_instr(xscale
->jtag_info
.tap
, xscale
->jtag_info
.dcsr
);
258 buf_set_u32(&field0
, 1, 1, xscale
->hold_rst
);
259 buf_set_u32(&field0
, 2, 1, xscale
->external_debug_break
);
261 fields
[0].tap
= xscale
->jtag_info
.tap
;
262 fields
[0].num_bits
= 3;
263 fields
[0].out_value
= &field0
;
264 fields
[0].out_mask
= NULL
;
265 fields
[0].in_value
= NULL
;
266 jtag_set_check_value(fields
+0, &field0_check_value
, &field0_check_mask
, NULL
);
268 fields
[1].tap
= xscale
->jtag_info
.tap
;
269 fields
[1].num_bits
= 32;
270 fields
[1].out_value
= NULL
;
271 fields
[1].out_mask
= NULL
;
272 fields
[1].in_value
= xscale
->reg_cache
->reg_list
[XSCALE_DCSR
].value
;
273 fields
[1].in_handler
= NULL
;
274 fields
[1].in_handler_priv
= NULL
;
275 fields
[1].in_check_value
= NULL
;
276 fields
[1].in_check_mask
= NULL
;
278 fields
[2].tap
= xscale
->jtag_info
.tap
;
279 fields
[2].num_bits
= 1;
280 fields
[2].out_value
= &field2
;
281 fields
[2].out_mask
= NULL
;
282 fields
[2].in_value
= NULL
;
283 jtag_set_check_value(fields
+2, &field2_check_value
, &field2_check_mask
, NULL
);
285 jtag_add_dr_scan(3, fields
, TAP_INVALID
);
287 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
289 LOG_ERROR("JTAG error while reading DCSR");
293 xscale
->reg_cache
->reg_list
[XSCALE_DCSR
].dirty
= 0;
294 xscale
->reg_cache
->reg_list
[XSCALE_DCSR
].valid
= 1;
296 /* write the register with the value we just read
297 * on this second pass, only the first bit of field0 is guaranteed to be 0)
299 field0_check_mask
= 0x1;
300 fields
[1].out_value
= xscale
->reg_cache
->reg_list
[XSCALE_DCSR
].value
;
301 fields
[1].in_value
= NULL
;
303 jtag_add_end_state(TAP_IDLE
);
305 jtag_add_dr_scan(3, fields
, TAP_INVALID
);
307 /* DANGER!!! this must be here. It will make sure that the arguments
308 * to jtag_set_check_value() does not go out of scope! */
309 return jtag_execute_queue();
312 int xscale_receive(target_t
*target
, u32
*buffer
, int num_words
)
315 return ERROR_INVALID_ARGUMENTS
;
318 armv4_5_common_t
*armv4_5
= target
->arch_info
;
319 xscale_common_t
*xscale
= armv4_5
->arch_info
;
322 scan_field_t fields
[3];
324 u8
*field0
= malloc(num_words
* 1);
325 u8 field0_check_value
= 0x2;
326 u8 field0_check_mask
= 0x6;
327 u32
*field1
= malloc(num_words
* 4);
328 u8 field2_check_value
= 0x0;
329 u8 field2_check_mask
= 0x1;
331 int words_scheduled
= 0;
335 path
[0] = TAP_DRSELECT
;
336 path
[1] = TAP_DRCAPTURE
;
337 path
[2] = TAP_DRSHIFT
;
339 fields
[0].tap
= xscale
->jtag_info
.tap
;
340 fields
[0].num_bits
= 3;
341 fields
[0].out_value
= NULL
;
342 fields
[0].out_mask
= NULL
;
343 fields
[0].in_value
= NULL
;
344 jtag_set_check_value(fields
+0, &field0_check_value
, &field0_check_mask
, NULL
);
346 fields
[1].tap
= xscale
->jtag_info
.tap
;
347 fields
[1].num_bits
= 32;
348 fields
[1].out_value
= NULL
;
349 fields
[1].out_mask
= NULL
;
350 fields
[1].in_value
= NULL
;
351 fields
[1].in_handler
= NULL
;
352 fields
[1].in_handler_priv
= NULL
;
353 fields
[1].in_check_value
= NULL
;
354 fields
[1].in_check_mask
= NULL
;
356 fields
[2].tap
= xscale
->jtag_info
.tap
;
357 fields
[2].num_bits
= 1;
358 fields
[2].out_value
= NULL
;
359 fields
[2].out_mask
= NULL
;
360 fields
[2].in_value
= NULL
;
361 jtag_set_check_value(fields
+2, &field2_check_value
, &field2_check_mask
, NULL
);
363 jtag_add_end_state(TAP_IDLE
);
364 xscale_jtag_set_instr(xscale
->jtag_info
.tap
, xscale
->jtag_info
.dbgtx
);
365 jtag_add_runtest(1, TAP_INVALID
); /* ensures that we're in the TAP_IDLE state as the above could be a no-op */
367 /* repeat until all words have been collected */
369 while (words_done
< num_words
)
373 for (i
= words_done
; i
< num_words
; i
++)
375 fields
[0].in_value
= &field0
[i
];
376 fields
[1].in_handler
= buf_to_u32_handler
;
377 fields
[1].in_handler_priv
= (u8
*)&field1
[i
];
379 jtag_add_pathmove(3, path
);
380 jtag_add_dr_scan(3, fields
, TAP_IDLE
);
384 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
386 LOG_ERROR("JTAG error while receiving data from debug handler");
390 /* examine results */
391 for (i
= words_done
; i
< num_words
; i
++)
393 if (!(field0
[0] & 1))
395 /* move backwards if necessary */
397 for (j
= i
; j
< num_words
- 1; j
++)
399 field0
[j
] = field0
[j
+1];
400 field1
[j
] = field1
[j
+1];
405 if (words_scheduled
==0)
407 if (attempts
++==1000)
409 LOG_ERROR("Failed to receiving data from debug handler after 1000 attempts");
410 retval
=ERROR_TARGET_TIMEOUT
;
415 words_done
+= words_scheduled
;
418 for (i
= 0; i
< num_words
; i
++)
419 *(buffer
++) = buf_get_u32((u8
*)&field1
[i
], 0, 32);
426 int xscale_read_tx(target_t
*target
, int consume
)
428 armv4_5_common_t
*armv4_5
= target
->arch_info
;
429 xscale_common_t
*xscale
= armv4_5
->arch_info
;
431 tap_state_t noconsume_path
[6];
434 struct timeval timeout
, now
;
436 scan_field_t fields
[3];
438 u8 field0_check_value
= 0x2;
439 u8 field0_check_mask
= 0x6;
440 u8 field2_check_value
= 0x0;
441 u8 field2_check_mask
= 0x1;
443 jtag_add_end_state(TAP_IDLE
);
445 xscale_jtag_set_instr(xscale
->jtag_info
.tap
, xscale
->jtag_info
.dbgtx
);
447 path
[0] = TAP_DRSELECT
;
448 path
[1] = TAP_DRCAPTURE
;
449 path
[2] = TAP_DRSHIFT
;
451 noconsume_path
[0] = TAP_DRSELECT
;
452 noconsume_path
[1] = TAP_DRCAPTURE
;
453 noconsume_path
[2] = TAP_DREXIT1
;
454 noconsume_path
[3] = TAP_DRPAUSE
;
455 noconsume_path
[4] = TAP_DREXIT2
;
456 noconsume_path
[5] = TAP_DRSHIFT
;
458 fields
[0].tap
= xscale
->jtag_info
.tap
;
459 fields
[0].num_bits
= 3;
460 fields
[0].out_value
= NULL
;
461 fields
[0].out_mask
= NULL
;
462 fields
[0].in_value
= &field0_in
;
463 jtag_set_check_value(fields
+0, &field0_check_value
, &field0_check_mask
, NULL
);
465 fields
[1].tap
= xscale
->jtag_info
.tap
;
466 fields
[1].num_bits
= 32;
467 fields
[1].out_value
= NULL
;
468 fields
[1].out_mask
= NULL
;
469 fields
[1].in_value
= xscale
->reg_cache
->reg_list
[XSCALE_TX
].value
;
470 fields
[1].in_handler
= NULL
;
471 fields
[1].in_handler_priv
= NULL
;
472 fields
[1].in_check_value
= NULL
;
473 fields
[1].in_check_mask
= NULL
;
475 fields
[2].tap
= xscale
->jtag_info
.tap
;
476 fields
[2].num_bits
= 1;
477 fields
[2].out_value
= NULL
;
478 fields
[2].out_mask
= NULL
;
479 fields
[2].in_value
= NULL
;
480 jtag_set_check_value(fields
+2, &field2_check_value
, &field2_check_mask
, NULL
);
482 gettimeofday(&timeout
, NULL
);
483 timeval_add_time(&timeout
, 1, 0);
487 /* if we want to consume the register content (i.e. clear TX_READY),
488 * we have to go straight from Capture-DR to Shift-DR
489 * otherwise, we go from Capture-DR to Exit1-DR to Pause-DR
492 jtag_add_pathmove(3, path
);
495 jtag_add_pathmove(sizeof(noconsume_path
)/sizeof(*noconsume_path
), noconsume_path
);
498 jtag_add_dr_scan(3, fields
, TAP_IDLE
);
500 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
502 LOG_ERROR("JTAG error while reading TX");
503 return ERROR_TARGET_TIMEOUT
;
506 gettimeofday(&now
, NULL
);
507 if ((now
.tv_sec
> timeout
.tv_sec
) || ((now
.tv_sec
== timeout
.tv_sec
)&& (now
.tv_usec
> timeout
.tv_usec
)))
509 LOG_ERROR("time out reading TX register");
510 return ERROR_TARGET_TIMEOUT
;
512 if (!((!(field0_in
& 1)) && consume
))
518 LOG_DEBUG("waiting 100ms");
519 alive_sleep(100); /* avoid flooding the logs */
527 if (!(field0_in
& 1))
528 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
533 int xscale_write_rx(target_t
*target
)
535 armv4_5_common_t
*armv4_5
= target
->arch_info
;
536 xscale_common_t
*xscale
= armv4_5
->arch_info
;
539 struct timeval timeout
, now
;
541 scan_field_t fields
[3];
544 u8 field0_check_value
= 0x2;
545 u8 field0_check_mask
= 0x6;
547 u8 field2_check_value
= 0x0;
548 u8 field2_check_mask
= 0x1;
550 jtag_add_end_state(TAP_IDLE
);
552 xscale_jtag_set_instr(xscale
->jtag_info
.tap
, xscale
->jtag_info
.dbgrx
);
554 fields
[0].tap
= xscale
->jtag_info
.tap
;
555 fields
[0].num_bits
= 3;
556 fields
[0].out_value
= &field0_out
;
557 fields
[0].out_mask
= NULL
;
558 fields
[0].in_value
= &field0_in
;
559 jtag_set_check_value(fields
+0, &field0_check_value
, &field0_check_mask
, NULL
);
561 fields
[1].tap
= xscale
->jtag_info
.tap
;
562 fields
[1].num_bits
= 32;
563 fields
[1].out_value
= xscale
->reg_cache
->reg_list
[XSCALE_RX
].value
;
564 fields
[1].out_mask
= NULL
;
565 fields
[1].in_value
= NULL
;
566 fields
[1].in_handler
= NULL
;
567 fields
[1].in_handler_priv
= NULL
;
568 fields
[1].in_check_value
= NULL
;
569 fields
[1].in_check_mask
= NULL
;
571 fields
[2].tap
= xscale
->jtag_info
.tap
;
572 fields
[2].num_bits
= 1;
573 fields
[2].out_value
= &field2
;
574 fields
[2].out_mask
= NULL
;
575 fields
[2].in_value
= NULL
;
576 jtag_set_check_value(fields
+2, &field2_check_value
, &field2_check_mask
, NULL
);
578 gettimeofday(&timeout
, NULL
);
579 timeval_add_time(&timeout
, 1, 0);
581 /* poll until rx_read is low */
582 LOG_DEBUG("polling RX");
585 jtag_add_dr_scan(3, fields
, TAP_IDLE
);
587 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
589 LOG_ERROR("JTAG error while writing RX");
593 gettimeofday(&now
, NULL
);
594 if ((now
.tv_sec
> timeout
.tv_sec
) || ((now
.tv_sec
== timeout
.tv_sec
)&& (now
.tv_usec
> timeout
.tv_usec
)))
596 LOG_ERROR("time out writing RX register");
597 return ERROR_TARGET_TIMEOUT
;
599 if (!(field0_in
& 1))
603 LOG_DEBUG("waiting 100ms");
604 alive_sleep(100); /* avoid flooding the logs */
614 jtag_add_dr_scan(3, fields
, TAP_IDLE
);
616 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
618 LOG_ERROR("JTAG error while writing RX");
625 /* send count elements of size byte to the debug handler */
626 int xscale_send(target_t
*target
, u8
*buffer
, int count
, int size
)
628 armv4_5_common_t
*armv4_5
= target
->arch_info
;
629 xscale_common_t
*xscale
= armv4_5
->arch_info
;
637 jtag_add_end_state(TAP_IDLE
);
639 xscale_jtag_set_instr(xscale
->jtag_info
.tap
, xscale
->jtag_info
.dbgrx
);
646 int endianness
= target
->endianness
;
647 while (done_count
++ < count
)
652 if (endianness
== TARGET_LITTLE_ENDIAN
)
654 t
[1]=le_to_h_u32(buffer
);
657 t
[1]=be_to_h_u32(buffer
);
661 if (endianness
== TARGET_LITTLE_ENDIAN
)
663 t
[1]=le_to_h_u16(buffer
);
666 t
[1]=be_to_h_u16(buffer
);
673 LOG_ERROR("BUG: size neither 4, 2 nor 1");
676 jtag_add_dr_out(xscale
->jtag_info
.tap
,
684 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
686 LOG_ERROR("JTAG error while sending data to debug handler");
693 int xscale_send_u32(target_t
*target
, u32 value
)
695 armv4_5_common_t
*armv4_5
= target
->arch_info
;
696 xscale_common_t
*xscale
= armv4_5
->arch_info
;
698 buf_set_u32(xscale
->reg_cache
->reg_list
[XSCALE_RX
].value
, 0, 32, value
);
699 return xscale_write_rx(target
);
702 int xscale_write_dcsr(target_t
*target
, int hold_rst
, int ext_dbg_brk
)
704 armv4_5_common_t
*armv4_5
= target
->arch_info
;
705 xscale_common_t
*xscale
= armv4_5
->arch_info
;
709 scan_field_t fields
[3];
711 u8 field0_check_value
= 0x2;
712 u8 field0_check_mask
= 0x7;
714 u8 field2_check_value
= 0x0;
715 u8 field2_check_mask
= 0x1;
718 xscale
->hold_rst
= hold_rst
;
720 if (ext_dbg_brk
!= -1)
721 xscale
->external_debug_break
= ext_dbg_brk
;
723 jtag_add_end_state(TAP_IDLE
);
724 xscale_jtag_set_instr(xscale
->jtag_info
.tap
, xscale
->jtag_info
.dcsr
);
726 buf_set_u32(&field0
, 1, 1, xscale
->hold_rst
);
727 buf_set_u32(&field0
, 2, 1, xscale
->external_debug_break
);
729 fields
[0].tap
= xscale
->jtag_info
.tap
;
730 fields
[0].num_bits
= 3;
731 fields
[0].out_value
= &field0
;
732 fields
[0].out_mask
= NULL
;
733 fields
[0].in_value
= NULL
;
734 jtag_set_check_value(fields
+0, &field0_check_value
, &field0_check_mask
, NULL
);
736 fields
[1].tap
= xscale
->jtag_info
.tap
;
737 fields
[1].num_bits
= 32;
738 fields
[1].out_value
= xscale
->reg_cache
->reg_list
[XSCALE_DCSR
].value
;
739 fields
[1].out_mask
= NULL
;
740 fields
[1].in_value
= NULL
;
741 fields
[1].in_handler
= NULL
;
742 fields
[1].in_handler_priv
= NULL
;
743 fields
[1].in_check_value
= NULL
;
744 fields
[1].in_check_mask
= NULL
;
746 fields
[2].tap
= xscale
->jtag_info
.tap
;
747 fields
[2].num_bits
= 1;
748 fields
[2].out_value
= &field2
;
749 fields
[2].out_mask
= NULL
;
750 fields
[2].in_value
= NULL
;
751 jtag_set_check_value(fields
+2, &field2_check_value
, &field2_check_mask
, NULL
);
753 jtag_add_dr_scan(3, fields
, TAP_INVALID
);
755 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
757 LOG_ERROR("JTAG error while writing DCSR");
761 xscale
->reg_cache
->reg_list
[XSCALE_DCSR
].dirty
= 0;
762 xscale
->reg_cache
->reg_list
[XSCALE_DCSR
].valid
= 1;
767 /* parity of the number of bits 0 if even; 1 if odd. for 32 bit words */
768 unsigned int parity (unsigned int v
)
775 LOG_DEBUG("parity of 0x%x is %i", ov
, (0x6996 >> v
) & 1);
776 return (0x6996 >> v
) & 1;
779 int xscale_load_ic(target_t
*target
, int mini
, u32 va
, u32 buffer
[8])
781 armv4_5_common_t
*armv4_5
= target
->arch_info
;
782 xscale_common_t
*xscale
= armv4_5
->arch_info
;
787 scan_field_t fields
[2];
789 LOG_DEBUG("loading miniIC at 0x%8.8x", va
);
791 jtag_add_end_state(TAP_IDLE
);
792 xscale_jtag_set_instr(xscale
->jtag_info
.tap
, xscale
->jtag_info
.ldic
); /* LDIC */
794 /* CMD is b010 for Main IC and b011 for Mini IC */
796 buf_set_u32(&cmd
, 0, 3, 0x3);
798 buf_set_u32(&cmd
, 0, 3, 0x2);
800 buf_set_u32(&cmd
, 3, 3, 0x0);
802 /* virtual address of desired cache line */
803 buf_set_u32(packet
, 0, 27, va
>> 5);
805 fields
[0].tap
= xscale
->jtag_info
.tap
;
806 fields
[0].num_bits
= 6;
807 fields
[0].out_value
= &cmd
;
808 fields
[0].out_mask
= NULL
;
809 fields
[0].in_value
= NULL
;
810 fields
[0].in_check_value
= NULL
;
811 fields
[0].in_check_mask
= NULL
;
812 fields
[0].in_handler
= NULL
;
813 fields
[0].in_handler_priv
= NULL
;
815 fields
[1].tap
= xscale
->jtag_info
.tap
;
816 fields
[1].num_bits
= 27;
817 fields
[1].out_value
= packet
;
818 fields
[1].out_mask
= NULL
;
819 fields
[1].in_value
= NULL
;
820 fields
[1].in_check_value
= NULL
;
821 fields
[1].in_check_mask
= NULL
;
822 fields
[1].in_handler
= NULL
;
823 fields
[1].in_handler_priv
= NULL
;
825 jtag_add_dr_scan(2, fields
, TAP_INVALID
);
827 fields
[0].num_bits
= 32;
828 fields
[0].out_value
= packet
;
830 fields
[1].num_bits
= 1;
831 fields
[1].out_value
= &cmd
;
833 for (word
= 0; word
< 8; word
++)
835 buf_set_u32(packet
, 0, 32, buffer
[word
]);
836 cmd
= parity(*((u32
*)packet
));
837 jtag_add_dr_scan(2, fields
, TAP_INVALID
);
840 jtag_execute_queue();
845 int xscale_invalidate_ic_line(target_t
*target
, u32 va
)
847 armv4_5_common_t
*armv4_5
= target
->arch_info
;
848 xscale_common_t
*xscale
= armv4_5
->arch_info
;
852 scan_field_t fields
[2];
854 jtag_add_end_state(TAP_IDLE
);
855 xscale_jtag_set_instr(xscale
->jtag_info
.tap
, xscale
->jtag_info
.ldic
); /* LDIC */
857 /* CMD for invalidate IC line b000, bits [6:4] b000 */
858 buf_set_u32(&cmd
, 0, 6, 0x0);
860 /* virtual address of desired cache line */
861 buf_set_u32(packet
, 0, 27, va
>> 5);
863 fields
[0].tap
= xscale
->jtag_info
.tap
;
864 fields
[0].num_bits
= 6;
865 fields
[0].out_value
= &cmd
;
866 fields
[0].out_mask
= NULL
;
867 fields
[0].in_value
= NULL
;
868 fields
[0].in_check_value
= NULL
;
869 fields
[0].in_check_mask
= NULL
;
870 fields
[0].in_handler
= NULL
;
871 fields
[0].in_handler_priv
= NULL
;
873 fields
[1].tap
= xscale
->jtag_info
.tap
;
874 fields
[1].num_bits
= 27;
875 fields
[1].out_value
= packet
;
876 fields
[1].out_mask
= NULL
;
877 fields
[1].in_value
= NULL
;
878 fields
[1].in_check_value
= NULL
;
879 fields
[1].in_check_mask
= NULL
;
880 fields
[1].in_handler
= NULL
;
881 fields
[1].in_handler_priv
= NULL
;
883 jtag_add_dr_scan(2, fields
, TAP_INVALID
);
888 int xscale_update_vectors(target_t
*target
)
890 armv4_5_common_t
*armv4_5
= target
->arch_info
;
891 xscale_common_t
*xscale
= armv4_5
->arch_info
;
895 u32 low_reset_branch
, high_reset_branch
;
897 for (i
= 1; i
< 8; i
++)
899 /* if there's a static vector specified for this exception, override */
900 if (xscale
->static_high_vectors_set
& (1 << i
))
902 xscale
->high_vectors
[i
] = xscale
->static_high_vectors
[i
];
906 retval
=target_read_u32(target
, 0xffff0000 + 4*i
, &xscale
->high_vectors
[i
]);
907 if (retval
== ERROR_TARGET_TIMEOUT
)
909 if (retval
!=ERROR_OK
)
911 /* Some of these reads will fail as part of normal execution */
912 xscale
->high_vectors
[i
] = ARMV4_5_B(0xfffffe, 0);
917 for (i
= 1; i
< 8; i
++)
919 if (xscale
->static_low_vectors_set
& (1 << i
))
921 xscale
->low_vectors
[i
] = xscale
->static_low_vectors
[i
];
925 retval
=target_read_u32(target
, 0x0 + 4*i
, &xscale
->low_vectors
[i
]);
926 if (retval
== ERROR_TARGET_TIMEOUT
)
928 if (retval
!=ERROR_OK
)
930 /* Some of these reads will fail as part of normal execution */
931 xscale
->low_vectors
[i
] = ARMV4_5_B(0xfffffe, 0);
936 /* calculate branches to debug handler */
937 low_reset_branch
= (xscale
->handler_address
+ 0x20 - 0x0 - 0x8) >> 2;
938 high_reset_branch
= (xscale
->handler_address
+ 0x20 - 0xffff0000 - 0x8) >> 2;
940 xscale
->low_vectors
[0] = ARMV4_5_B((low_reset_branch
& 0xffffff), 0);
941 xscale
->high_vectors
[0] = ARMV4_5_B((high_reset_branch
& 0xffffff), 0);
943 /* invalidate and load exception vectors in mini i-cache */
944 xscale_invalidate_ic_line(target
, 0x0);
945 xscale_invalidate_ic_line(target
, 0xffff0000);
947 xscale_load_ic(target
, 1, 0x0, xscale
->low_vectors
);
948 xscale_load_ic(target
, 1, 0xffff0000, xscale
->high_vectors
);
953 int xscale_arch_state(struct target_s
*target
)
955 armv4_5_common_t
*armv4_5
= target
->arch_info
;
956 xscale_common_t
*xscale
= armv4_5
->arch_info
;
960 "disabled", "enabled"
963 char *arch_dbg_reason
[] =
965 "", "\n(processor reset)", "\n(trace buffer full)"
968 if (armv4_5
->common_magic
!= ARMV4_5_COMMON_MAGIC
)
970 LOG_ERROR("BUG: called for a non-ARMv4/5 target");
974 LOG_USER("target halted in %s state due to %s, current mode: %s\n"
975 "cpsr: 0x%8.8x pc: 0x%8.8x\n"
976 "MMU: %s, D-Cache: %s, I-Cache: %s"
978 armv4_5_state_strings
[armv4_5
->core_state
],
979 Jim_Nvp_value2name_simple( nvp_target_debug_reason
, target
->debug_reason
)->name
,
980 armv4_5_mode_strings
[armv4_5_mode_to_number(armv4_5
->core_mode
)],
981 buf_get_u32(armv4_5
->core_cache
->reg_list
[ARMV4_5_CPSR
].value
, 0, 32),
982 buf_get_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32),
983 state
[xscale
->armv4_5_mmu
.mmu_enabled
],
984 state
[xscale
->armv4_5_mmu
.armv4_5_cache
.d_u_cache_enabled
],
985 state
[xscale
->armv4_5_mmu
.armv4_5_cache
.i_cache_enabled
],
986 arch_dbg_reason
[xscale
->arch_debug_reason
]);
991 int xscale_poll(target_t
*target
)
994 armv4_5_common_t
*armv4_5
= target
->arch_info
;
995 xscale_common_t
*xscale
= armv4_5
->arch_info
;
997 if ((target
->state
== TARGET_RUNNING
) || (target
->state
== TARGET_DEBUG_RUNNING
))
999 enum target_state previous_state
= target
->state
;
1000 if ((retval
= xscale_read_tx(target
, 0)) == ERROR_OK
)
1003 /* there's data to read from the tx register, we entered debug state */
1004 xscale
->handler_running
= 1;
1006 target
->state
= TARGET_HALTED
;
1008 /* process debug entry, fetching current mode regs */
1009 retval
= xscale_debug_entry(target
);
1011 else if (retval
!= ERROR_TARGET_RESOURCE_NOT_AVAILABLE
)
1013 LOG_USER("error while polling TX register, reset CPU");
1014 /* here we "lie" so GDB won't get stuck and a reset can be perfomed */
1015 target
->state
= TARGET_HALTED
;
1018 /* debug_entry could have overwritten target state (i.e. immediate resume)
1019 * don't signal event handlers in that case
1021 if (target
->state
!= TARGET_HALTED
)
1024 /* if target was running, signal that we halted
1025 * otherwise we reentered from debug execution */
1026 if (previous_state
== TARGET_RUNNING
)
1027 target_call_event_callbacks(target
, TARGET_EVENT_HALTED
);
1029 target_call_event_callbacks(target
, TARGET_EVENT_DEBUG_HALTED
);
1035 int xscale_debug_entry(target_t
*target
)
1037 armv4_5_common_t
*armv4_5
= target
->arch_info
;
1038 xscale_common_t
*xscale
= armv4_5
->arch_info
;
1046 /* clear external dbg break (will be written on next DCSR read) */
1047 xscale
->external_debug_break
= 0;
1048 if ((retval
=xscale_read_dcsr(target
))!=ERROR_OK
)
1051 /* get r0, pc, r1 to r7 and cpsr */
1052 if ((retval
=xscale_receive(target
, buffer
, 10))!=ERROR_OK
)
1055 /* move r0 from buffer to register cache */
1056 buf_set_u32(armv4_5
->core_cache
->reg_list
[0].value
, 0, 32, buffer
[0]);
1057 armv4_5
->core_cache
->reg_list
[15].dirty
= 1;
1058 armv4_5
->core_cache
->reg_list
[15].valid
= 1;
1059 LOG_DEBUG("r0: 0x%8.8x", buffer
[0]);
1061 /* move pc from buffer to register cache */
1062 buf_set_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32, buffer
[1]);
1063 armv4_5
->core_cache
->reg_list
[15].dirty
= 1;
1064 armv4_5
->core_cache
->reg_list
[15].valid
= 1;
1065 LOG_DEBUG("pc: 0x%8.8x", buffer
[1]);
1067 /* move data from buffer to register cache */
1068 for (i
= 1; i
<= 7; i
++)
1070 buf_set_u32(armv4_5
->core_cache
->reg_list
[i
].value
, 0, 32, buffer
[1 + i
]);
1071 armv4_5
->core_cache
->reg_list
[i
].dirty
= 1;
1072 armv4_5
->core_cache
->reg_list
[i
].valid
= 1;
1073 LOG_DEBUG("r%i: 0x%8.8x", i
, buffer
[i
+ 1]);
1076 buf_set_u32(armv4_5
->core_cache
->reg_list
[ARMV4_5_CPSR
].value
, 0, 32, buffer
[9]);
1077 armv4_5
->core_cache
->reg_list
[ARMV4_5_CPSR
].dirty
= 1;
1078 armv4_5
->core_cache
->reg_list
[ARMV4_5_CPSR
].valid
= 1;
1079 LOG_DEBUG("cpsr: 0x%8.8x", buffer
[9]);
1081 armv4_5
->core_mode
= buffer
[9] & 0x1f;
1082 if (armv4_5_mode_to_number(armv4_5
->core_mode
) == -1)
1084 target
->state
= TARGET_UNKNOWN
;
1085 LOG_ERROR("cpsr contains invalid mode value - communication failure");
1086 return ERROR_TARGET_FAILURE
;
1088 LOG_DEBUG("target entered debug state in %s mode", armv4_5_mode_strings
[armv4_5_mode_to_number(armv4_5
->core_mode
)]);
1090 if (buffer
[9] & 0x20)
1091 armv4_5
->core_state
= ARMV4_5_STATE_THUMB
;
1093 armv4_5
->core_state
= ARMV4_5_STATE_ARM
;
1096 if (armv4_5_mode_to_number(armv4_5
->core_mode
)==-1)
1099 /* get banked registers, r8 to r14, and spsr if not in USR/SYS mode */
1100 if ((armv4_5
->core_mode
!= ARMV4_5_MODE_USR
) && (armv4_5
->core_mode
!= ARMV4_5_MODE_SYS
))
1102 xscale_receive(target
, buffer
, 8);
1103 buf_set_u32(ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5
->core_mode
, 16).value
, 0, 32, buffer
[7]);
1104 ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5
->core_mode
, 16).dirty
= 0;
1105 ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5
->core_mode
, 16).valid
= 1;
1109 /* r8 to r14, but no spsr */
1110 xscale_receive(target
, buffer
, 7);
1113 /* move data from buffer to register cache */
1114 for (i
= 8; i
<= 14; i
++)
1116 buf_set_u32(ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5
->core_mode
, i
).value
, 0, 32, buffer
[i
- 8]);
1117 ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5
->core_mode
, i
).dirty
= 0;
1118 ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5
->core_mode
, i
).valid
= 1;
1121 /* examine debug reason */
1122 xscale_read_dcsr(target
);
1123 moe
= buf_get_u32(xscale
->reg_cache
->reg_list
[XSCALE_DCSR
].value
, 2, 3);
1125 /* stored PC (for calculating fixup) */
1126 pc
= buf_get_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32);
1130 case 0x0: /* Processor reset */
1131 target
->debug_reason
= DBG_REASON_DBGRQ
;
1132 xscale
->arch_debug_reason
= XSCALE_DBG_REASON_RESET
;
1135 case 0x1: /* Instruction breakpoint hit */
1136 target
->debug_reason
= DBG_REASON_BREAKPOINT
;
1137 xscale
->arch_debug_reason
= XSCALE_DBG_REASON_GENERIC
;
1140 case 0x2: /* Data breakpoint hit */
1141 target
->debug_reason
= DBG_REASON_WATCHPOINT
;
1142 xscale
->arch_debug_reason
= XSCALE_DBG_REASON_GENERIC
;
1145 case 0x3: /* BKPT instruction executed */
1146 target
->debug_reason
= DBG_REASON_BREAKPOINT
;
1147 xscale
->arch_debug_reason
= XSCALE_DBG_REASON_GENERIC
;
1150 case 0x4: /* Ext. debug event */
1151 target
->debug_reason
= DBG_REASON_DBGRQ
;
1152 xscale
->arch_debug_reason
= XSCALE_DBG_REASON_GENERIC
;
1155 case 0x5: /* Vector trap occured */
1156 target
->debug_reason
= DBG_REASON_BREAKPOINT
;
1157 xscale
->arch_debug_reason
= XSCALE_DBG_REASON_GENERIC
;
1160 case 0x6: /* Trace buffer full break */
1161 target
->debug_reason
= DBG_REASON_DBGRQ
;
1162 xscale
->arch_debug_reason
= XSCALE_DBG_REASON_TB_FULL
;
1165 case 0x7: /* Reserved */
1167 LOG_ERROR("Method of Entry is 'Reserved'");
1172 /* apply PC fixup */
1173 buf_set_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32, pc
);
1175 /* on the first debug entry, identify cache type */
1176 if (xscale
->armv4_5_mmu
.armv4_5_cache
.ctype
== -1)
1180 /* read cp15 cache type register */
1181 xscale_get_reg(&xscale
->reg_cache
->reg_list
[XSCALE_CACHETYPE
]);
1182 cache_type_reg
= buf_get_u32(xscale
->reg_cache
->reg_list
[XSCALE_CACHETYPE
].value
, 0, 32);
1184 armv4_5_identify_cache(cache_type_reg
, &xscale
->armv4_5_mmu
.armv4_5_cache
);
1187 /* examine MMU and Cache settings */
1188 /* read cp15 control register */
1189 xscale_get_reg(&xscale
->reg_cache
->reg_list
[XSCALE_CTRL
]);
1190 xscale
->cp15_control_reg
= buf_get_u32(xscale
->reg_cache
->reg_list
[XSCALE_CTRL
].value
, 0, 32);
1191 xscale
->armv4_5_mmu
.mmu_enabled
= (xscale
->cp15_control_reg
& 0x1U
) ? 1 : 0;
1192 xscale
->armv4_5_mmu
.armv4_5_cache
.d_u_cache_enabled
= (xscale
->cp15_control_reg
& 0x4U
) ? 1 : 0;
1193 xscale
->armv4_5_mmu
.armv4_5_cache
.i_cache_enabled
= (xscale
->cp15_control_reg
& 0x1000U
) ? 1 : 0;
1195 /* tracing enabled, read collected trace data */
1196 if (xscale
->trace
.buffer_enabled
)
1198 xscale_read_trace(target
);
1199 xscale
->trace
.buffer_fill
--;
1201 /* resume if we're still collecting trace data */
1202 if ((xscale
->arch_debug_reason
== XSCALE_DBG_REASON_TB_FULL
)
1203 && (xscale
->trace
.buffer_fill
> 0))
1205 xscale_resume(target
, 1, 0x0, 1, 0);
1209 xscale
->trace
.buffer_enabled
= 0;
1216 int xscale_halt(target_t
*target
)
1218 armv4_5_common_t
*armv4_5
= target
->arch_info
;
1219 xscale_common_t
*xscale
= armv4_5
->arch_info
;
1221 LOG_DEBUG("target->state: %s",
1222 Jim_Nvp_value2name_simple( nvp_target_state
, target
->state
)->name
);
1224 if (target
->state
== TARGET_HALTED
)
1226 LOG_DEBUG("target was already halted");
1229 else if (target
->state
== TARGET_UNKNOWN
)
1231 /* this must not happen for a xscale target */
1232 LOG_ERROR("target was in unknown state when halt was requested");
1233 return ERROR_TARGET_INVALID
;
1235 else if (target
->state
== TARGET_RESET
)
1237 LOG_DEBUG("target->state == TARGET_RESET");
1241 /* assert external dbg break */
1242 xscale
->external_debug_break
= 1;
1243 xscale_read_dcsr(target
);
1245 target
->debug_reason
= DBG_REASON_DBGRQ
;
1251 int xscale_enable_single_step(struct target_s
*target
, u32 next_pc
)
1253 armv4_5_common_t
*armv4_5
= target
->arch_info
;
1254 xscale_common_t
*xscale
= armv4_5
->arch_info
;
1255 reg_t
*ibcr0
= &xscale
->reg_cache
->reg_list
[XSCALE_IBCR0
];
1258 if (xscale
->ibcr0_used
)
1260 breakpoint_t
*ibcr0_bp
= breakpoint_find(target
, buf_get_u32(ibcr0
->value
, 0, 32) & 0xfffffffe);
1264 xscale_unset_breakpoint(target
, ibcr0_bp
);
1268 LOG_ERROR("BUG: xscale->ibcr0_used is set, but no breakpoint with that address found");
1273 if ((retval
=xscale_set_reg_u32(ibcr0
, next_pc
| 0x1))!=ERROR_OK
)
1279 int xscale_disable_single_step(struct target_s
*target
)
1281 armv4_5_common_t
*armv4_5
= target
->arch_info
;
1282 xscale_common_t
*xscale
= armv4_5
->arch_info
;
1283 reg_t
*ibcr0
= &xscale
->reg_cache
->reg_list
[XSCALE_IBCR0
];
1286 if ((retval
=xscale_set_reg_u32(ibcr0
, 0x0))!=ERROR_OK
)
1292 int xscale_resume(struct target_s
*target
, int current
, u32 address
, int handle_breakpoints
, int debug_execution
)
1294 armv4_5_common_t
*armv4_5
= target
->arch_info
;
1295 xscale_common_t
*xscale
= armv4_5
->arch_info
;
1296 breakpoint_t
*breakpoint
= target
->breakpoints
;
1305 if (target
->state
!= TARGET_HALTED
)
1307 LOG_WARNING("target not halted");
1308 return ERROR_TARGET_NOT_HALTED
;
1311 if (!debug_execution
)
1313 target_free_all_working_areas(target
);
1316 /* update vector tables */
1317 if ((retval
=xscale_update_vectors(target
))!=ERROR_OK
)
1320 /* current = 1: continue on current pc, otherwise continue at <address> */
1322 buf_set_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32, address
);
1324 current_pc
= buf_get_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32);
1326 /* if we're at the reset vector, we have to simulate the branch */
1327 if (current_pc
== 0x0)
1329 arm_simulate_step(target
, NULL
);
1330 current_pc
= buf_get_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32);
1333 /* the front-end may request us not to handle breakpoints */
1334 if (handle_breakpoints
)
1336 if ((breakpoint
= breakpoint_find(target
, buf_get_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32))))
1340 /* there's a breakpoint at the current PC, we have to step over it */
1341 LOG_DEBUG("unset breakpoint at 0x%8.8x", breakpoint
->address
);
1342 xscale_unset_breakpoint(target
, breakpoint
);
1344 /* calculate PC of next instruction */
1345 if ((retval
= arm_simulate_step(target
, &next_pc
)) != ERROR_OK
)
1348 target_read_u32(target
, current_pc
, ¤t_opcode
);
1349 LOG_ERROR("BUG: couldn't calculate PC of next instruction, current opcode was 0x%8.8x", current_opcode
);
1352 LOG_DEBUG("enable single-step");
1353 xscale_enable_single_step(target
, next_pc
);
1355 /* restore banked registers */
1356 xscale_restore_context(target
);
1358 /* send resume request (command 0x30 or 0x31)
1359 * clean the trace buffer if it is to be enabled (0x62) */
1360 if (xscale
->trace
.buffer_enabled
)
1362 xscale_send_u32(target
, 0x62);
1363 xscale_send_u32(target
, 0x31);
1366 xscale_send_u32(target
, 0x30);
1369 xscale_send_u32(target
, buf_get_u32(armv4_5
->core_cache
->reg_list
[ARMV4_5_CPSR
].value
, 0, 32));
1370 LOG_DEBUG("writing cpsr with value 0x%8.8x", buf_get_u32(armv4_5
->core_cache
->reg_list
[ARMV4_5_CPSR
].value
, 0, 32));
1372 for (i
= 7; i
>= 0; i
--)
1375 xscale_send_u32(target
, buf_get_u32(armv4_5
->core_cache
->reg_list
[i
].value
, 0, 32));
1376 LOG_DEBUG("writing r%i with value 0x%8.8x", i
, buf_get_u32(armv4_5
->core_cache
->reg_list
[i
].value
, 0, 32));
1380 xscale_send_u32(target
, buf_get_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32));
1381 LOG_DEBUG("writing PC with value 0x%8.8x", buf_get_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32));
1383 /* wait for and process debug entry */
1384 xscale_debug_entry(target
);
1386 LOG_DEBUG("disable single-step");
1387 xscale_disable_single_step(target
);
1389 LOG_DEBUG("set breakpoint at 0x%8.8x", breakpoint
->address
);
1390 xscale_set_breakpoint(target
, breakpoint
);
1394 /* enable any pending breakpoints and watchpoints */
1395 xscale_enable_breakpoints(target
);
1396 xscale_enable_watchpoints(target
);
1398 /* restore banked registers */
1399 xscale_restore_context(target
);
1401 /* send resume request (command 0x30 or 0x31)
1402 * clean the trace buffer if it is to be enabled (0x62) */
1403 if (xscale
->trace
.buffer_enabled
)
1405 xscale_send_u32(target
, 0x62);
1406 xscale_send_u32(target
, 0x31);
1409 xscale_send_u32(target
, 0x30);
1412 xscale_send_u32(target
, buf_get_u32(armv4_5
->core_cache
->reg_list
[ARMV4_5_CPSR
].value
, 0, 32));
1413 LOG_DEBUG("writing cpsr with value 0x%8.8x", buf_get_u32(armv4_5
->core_cache
->reg_list
[ARMV4_5_CPSR
].value
, 0, 32));
1415 for (i
= 7; i
>= 0; i
--)
1418 xscale_send_u32(target
, buf_get_u32(armv4_5
->core_cache
->reg_list
[i
].value
, 0, 32));
1419 LOG_DEBUG("writing r%i with value 0x%8.8x", i
, buf_get_u32(armv4_5
->core_cache
->reg_list
[i
].value
, 0, 32));
1423 xscale_send_u32(target
, buf_get_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32));
1424 LOG_DEBUG("writing PC with value 0x%8.8x", buf_get_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32));
1426 target
->debug_reason
= DBG_REASON_NOTHALTED
;
1428 if (!debug_execution
)
1430 /* registers are now invalid */
1431 armv4_5_invalidate_core_regs(target
);
1432 target
->state
= TARGET_RUNNING
;
1433 target_call_event_callbacks(target
, TARGET_EVENT_RESUMED
);
1437 target
->state
= TARGET_DEBUG_RUNNING
;
1438 target_call_event_callbacks(target
, TARGET_EVENT_DEBUG_RESUMED
);
1441 LOG_DEBUG("target resumed");
1443 xscale
->handler_running
= 1;
1448 static int xscale_step_inner(struct target_s
*target
, int current
, u32 address
, int handle_breakpoints
)
1450 armv4_5_common_t
*armv4_5
= target
->arch_info
;
1451 xscale_common_t
*xscale
= armv4_5
->arch_info
;
1457 target
->debug_reason
= DBG_REASON_SINGLESTEP
;
1459 /* calculate PC of next instruction */
1460 if ((retval
= arm_simulate_step(target
, &next_pc
)) != ERROR_OK
)
1462 u32 current_opcode
, current_pc
;
1463 current_pc
= buf_get_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32);
1465 target_read_u32(target
, current_pc
, ¤t_opcode
);
1466 LOG_ERROR("BUG: couldn't calculate PC of next instruction, current opcode was 0x%8.8x", current_opcode
);
1470 LOG_DEBUG("enable single-step");
1471 if ((retval
=xscale_enable_single_step(target
, next_pc
))!=ERROR_OK
)
1474 /* restore banked registers */
1475 if ((retval
=xscale_restore_context(target
))!=ERROR_OK
)
1478 /* send resume request (command 0x30 or 0x31)
1479 * clean the trace buffer if it is to be enabled (0x62) */
1480 if (xscale
->trace
.buffer_enabled
)
1482 if ((retval
=xscale_send_u32(target
, 0x62))!=ERROR_OK
)
1484 if ((retval
=xscale_send_u32(target
, 0x31))!=ERROR_OK
)
1488 if ((retval
=xscale_send_u32(target
, 0x30))!=ERROR_OK
)
1492 if ((retval
=xscale_send_u32(target
, buf_get_u32(armv4_5
->core_cache
->reg_list
[ARMV4_5_CPSR
].value
, 0, 32)))!=ERROR_OK
)
1494 LOG_DEBUG("writing cpsr with value 0x%8.8x", buf_get_u32(armv4_5
->core_cache
->reg_list
[ARMV4_5_CPSR
].value
, 0, 32));
1496 for (i
= 7; i
>= 0; i
--)
1499 if ((retval
=xscale_send_u32(target
, buf_get_u32(armv4_5
->core_cache
->reg_list
[i
].value
, 0, 32)))!=ERROR_OK
)
1501 LOG_DEBUG("writing r%i with value 0x%8.8x", i
, buf_get_u32(armv4_5
->core_cache
->reg_list
[i
].value
, 0, 32));
1505 if ((retval
=xscale_send_u32(target
, buf_get_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32)))!=ERROR_OK
)
1507 LOG_DEBUG("writing PC with value 0x%8.8x", buf_get_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32));
1509 target_call_event_callbacks(target
, TARGET_EVENT_RESUMED
);
1511 /* registers are now invalid */
1512 if ((retval
=armv4_5_invalidate_core_regs(target
))!=ERROR_OK
)
1515 /* wait for and process debug entry */
1516 if ((retval
=xscale_debug_entry(target
))!=ERROR_OK
)
1519 LOG_DEBUG("disable single-step");
1520 if ((retval
=xscale_disable_single_step(target
))!=ERROR_OK
)
1523 target_call_event_callbacks(target
, TARGET_EVENT_HALTED
);
1528 int xscale_step(struct target_s
*target
, int current
, u32 address
, int handle_breakpoints
)
1530 armv4_5_common_t
*armv4_5
= target
->arch_info
;
1531 breakpoint_t
*breakpoint
= target
->breakpoints
;
1536 if (target
->state
!= TARGET_HALTED
)
1538 LOG_WARNING("target not halted");
1539 return ERROR_TARGET_NOT_HALTED
;
1542 /* current = 1: continue on current pc, otherwise continue at <address> */
1544 buf_set_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32, address
);
1546 current_pc
= buf_get_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32);
1548 /* if we're at the reset vector, we have to simulate the step */
1549 if (current_pc
== 0x0)
1551 if ((retval
=arm_simulate_step(target
, NULL
))!=ERROR_OK
)
1553 current_pc
= buf_get_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32);
1555 target
->debug_reason
= DBG_REASON_SINGLESTEP
;
1556 target_call_event_callbacks(target
, TARGET_EVENT_HALTED
);
1561 /* the front-end may request us not to handle breakpoints */
1562 if (handle_breakpoints
)
1563 if ((breakpoint
= breakpoint_find(target
, buf_get_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32))))
1565 if ((retval
=xscale_unset_breakpoint(target
, breakpoint
))!=ERROR_OK
)
1569 retval
= xscale_step_inner(target
, current
, address
, handle_breakpoints
);
1573 xscale_set_breakpoint(target
, breakpoint
);
1576 LOG_DEBUG("target stepped");
1582 int xscale_assert_reset(target_t
*target
)
1584 armv4_5_common_t
*armv4_5
= target
->arch_info
;
1585 xscale_common_t
*xscale
= armv4_5
->arch_info
;
1587 LOG_DEBUG("target->state: %s",
1588 Jim_Nvp_value2name_simple( nvp_target_state
, target
->state
)->name
);
1590 /* select DCSR instruction (set endstate to R-T-I to ensure we don't
1591 * end up in T-L-R, which would reset JTAG
1593 jtag_add_end_state(TAP_IDLE
);
1594 xscale_jtag_set_instr(xscale
->jtag_info
.tap
, xscale
->jtag_info
.dcsr
);
1596 /* set Hold reset, Halt mode and Trap Reset */
1597 buf_set_u32(xscale
->reg_cache
->reg_list
[XSCALE_DCSR
].value
, 30, 1, 0x1);
1598 buf_set_u32(xscale
->reg_cache
->reg_list
[XSCALE_DCSR
].value
, 16, 1, 0x1);
1599 xscale_write_dcsr(target
, 1, 0);
1601 /* select BYPASS, because having DCSR selected caused problems on the PXA27x */
1602 xscale_jtag_set_instr(xscale
->jtag_info
.tap
, 0x7f);
1603 jtag_execute_queue();
1606 jtag_add_reset(0, 1);
1608 /* sleep 1ms, to be sure we fulfill any requirements */
1609 jtag_add_sleep(1000);
1610 jtag_execute_queue();
1612 target
->state
= TARGET_RESET
;
1614 if (target
->reset_halt
)
1617 if ((retval
= target_halt(target
))!=ERROR_OK
)
1624 int xscale_deassert_reset(target_t
*target
)
1626 armv4_5_common_t
*armv4_5
= target
->arch_info
;
1627 xscale_common_t
*xscale
= armv4_5
->arch_info
;
1629 fileio_t debug_handler
;
1637 breakpoint_t
*breakpoint
= target
->breakpoints
;
1641 xscale
->ibcr_available
= 2;
1642 xscale
->ibcr0_used
= 0;
1643 xscale
->ibcr1_used
= 0;
1645 xscale
->dbr_available
= 2;
1646 xscale
->dbr0_used
= 0;
1647 xscale
->dbr1_used
= 0;
1649 /* mark all hardware breakpoints as unset */
1652 if (breakpoint
->type
== BKPT_HARD
)
1654 breakpoint
->set
= 0;
1656 breakpoint
= breakpoint
->next
;
1659 if (!xscale
->handler_installed
)
1662 jtag_add_reset(0, 0);
1664 /* wait 300ms; 150 and 100ms were not enough */
1665 jtag_add_sleep(300*1000);
1667 jtag_add_runtest(2030, TAP_IDLE
);
1668 jtag_execute_queue();
1670 /* set Hold reset, Halt mode and Trap Reset */
1671 buf_set_u32(xscale
->reg_cache
->reg_list
[XSCALE_DCSR
].value
, 30, 1, 0x1);
1672 buf_set_u32(xscale
->reg_cache
->reg_list
[XSCALE_DCSR
].value
, 16, 1, 0x1);
1673 xscale_write_dcsr(target
, 1, 0);
1675 /* Load debug handler */
1676 if (fileio_open(&debug_handler
, "xscale/debug_handler.bin", FILEIO_READ
, FILEIO_BINARY
) != ERROR_OK
)
1681 if ((binary_size
= debug_handler
.size
) % 4)
1683 LOG_ERROR("debug_handler.bin: size not a multiple of 4");
1687 if (binary_size
> 0x800)
1689 LOG_ERROR("debug_handler.bin: larger than 2kb");
1693 binary_size
= CEIL(binary_size
, 32) * 32;
1695 address
= xscale
->handler_address
;
1696 while (binary_size
> 0)
1701 if ((retval
= fileio_read(&debug_handler
, 32, buffer
, &buf_cnt
)) != ERROR_OK
)
1706 for (i
= 0; i
< buf_cnt
; i
+= 4)
1708 /* convert LE buffer to host-endian u32 */
1709 cache_line
[i
/ 4] = le_to_h_u32(&buffer
[i
]);
1712 for (; buf_cnt
< 32; buf_cnt
+= 4)
1714 cache_line
[buf_cnt
/ 4] = 0xe1a08008;
1717 /* only load addresses other than the reset vectors */
1718 if ((address
% 0x400) != 0x0)
1720 xscale_load_ic(target
, 1, address
, cache_line
);
1724 binary_size
-= buf_cnt
;
1727 xscale_load_ic(target
, 1, 0x0, xscale
->low_vectors
);
1728 xscale_load_ic(target
, 1, 0xffff0000, xscale
->high_vectors
);
1730 jtag_add_runtest(30, TAP_IDLE
);
1732 jtag_add_sleep(100000);
1734 /* set Hold reset, Halt mode and Trap Reset */
1735 buf_set_u32(xscale
->reg_cache
->reg_list
[XSCALE_DCSR
].value
, 30, 1, 0x1);
1736 buf_set_u32(xscale
->reg_cache
->reg_list
[XSCALE_DCSR
].value
, 16, 1, 0x1);
1737 xscale_write_dcsr(target
, 1, 0);
1739 /* clear Hold reset to let the target run (should enter debug handler) */
1740 xscale_write_dcsr(target
, 0, 1);
1741 target
->state
= TARGET_RUNNING
;
1743 if (!target
->reset_halt
)
1745 jtag_add_sleep(10000);
1747 /* we should have entered debug now */
1748 xscale_debug_entry(target
);
1749 target
->state
= TARGET_HALTED
;
1751 /* resume the target */
1752 xscale_resume(target
, 1, 0x0, 1, 0);
1755 fileio_close(&debug_handler
);
1759 jtag_add_reset(0, 0);
1765 int xscale_soft_reset_halt(struct target_s
*target
)
1770 int xscale_read_core_reg(struct target_s
*target
, int num
, enum armv4_5_mode mode
)
1775 int xscale_write_core_reg(struct target_s
*target
, int num
, enum armv4_5_mode mode
, u32 value
)
1781 int xscale_full_context(target_t
*target
)
1783 armv4_5_common_t
*armv4_5
= target
->arch_info
;
1791 if (target
->state
!= TARGET_HALTED
)
1793 LOG_WARNING("target not halted");
1794 return ERROR_TARGET_NOT_HALTED
;
1797 buffer
= malloc(4 * 8);
1799 /* iterate through processor modes (FIQ, IRQ, SVC, ABT, UND and SYS)
1800 * we can't enter User mode on an XScale (unpredictable),
1801 * but User shares registers with SYS
1803 for(i
= 1; i
< 7; i
++)
1807 /* check if there are invalid registers in the current mode
1809 for (j
= 0; j
<= 16; j
++)
1811 if (ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5_number_to_mode(i
), j
).valid
== 0)
1819 /* request banked registers */
1820 xscale_send_u32(target
, 0x0);
1823 tmp_cpsr
|= armv4_5_number_to_mode(i
);
1824 tmp_cpsr
|= 0xc0; /* I/F bits */
1826 /* send CPSR for desired mode */
1827 xscale_send_u32(target
, tmp_cpsr
);
1829 /* get banked registers, r8 to r14, and spsr if not in USR/SYS mode */
1830 if ((armv4_5_number_to_mode(i
) != ARMV4_5_MODE_USR
) && (armv4_5_number_to_mode(i
) != ARMV4_5_MODE_SYS
))
1832 xscale_receive(target
, buffer
, 8);
1833 buf_set_u32(ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5
->core_mode
, 16).value
, 0, 32, buffer
[7]);
1834 ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5_number_to_mode(i
), 16).dirty
= 0;
1835 ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5_number_to_mode(i
), 16).valid
= 1;
1839 xscale_receive(target
, buffer
, 7);
1842 /* move data from buffer to register cache */
1843 for (j
= 8; j
<= 14; j
++)
1845 buf_set_u32(ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5_number_to_mode(i
), j
).value
, 0, 32, buffer
[j
- 8]);
1846 ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5_number_to_mode(i
), j
).dirty
= 0;
1847 ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5_number_to_mode(i
), j
).valid
= 1;
1857 int xscale_restore_context(target_t
*target
)
1859 armv4_5_common_t
*armv4_5
= target
->arch_info
;
1865 if (target
->state
!= TARGET_HALTED
)
1867 LOG_WARNING("target not halted");
1868 return ERROR_TARGET_NOT_HALTED
;
1871 /* iterate through processor modes (FIQ, IRQ, SVC, ABT, UND and SYS)
1872 * we can't enter User mode on an XScale (unpredictable),
1873 * but User shares registers with SYS
1875 for(i
= 1; i
< 7; i
++)
1879 /* check if there are invalid registers in the current mode
1881 for (j
= 8; j
<= 14; j
++)
1883 if (ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5_number_to_mode(i
), j
).dirty
== 1)
1887 /* if not USR/SYS, check if the SPSR needs to be written */
1888 if ((armv4_5_number_to_mode(i
) != ARMV4_5_MODE_USR
) && (armv4_5_number_to_mode(i
) != ARMV4_5_MODE_SYS
))
1890 if (ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5_number_to_mode(i
), 16).dirty
== 1)
1898 /* send banked registers */
1899 xscale_send_u32(target
, 0x1);
1902 tmp_cpsr
|= armv4_5_number_to_mode(i
);
1903 tmp_cpsr
|= 0xc0; /* I/F bits */
1905 /* send CPSR for desired mode */
1906 xscale_send_u32(target
, tmp_cpsr
);
1908 /* send banked registers, r8 to r14, and spsr if not in USR/SYS mode */
1909 for (j
= 8; j
<= 14; j
++)
1911 xscale_send_u32(target
, buf_get_u32(ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5
->core_mode
, j
).value
, 0, 32));
1912 ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5_number_to_mode(i
), j
).dirty
= 0;
1915 if ((armv4_5_number_to_mode(i
) != ARMV4_5_MODE_USR
) && (armv4_5_number_to_mode(i
) != ARMV4_5_MODE_SYS
))
1917 xscale_send_u32(target
, buf_get_u32(ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5
->core_mode
, 16).value
, 0, 32));
1918 ARMV4_5_CORE_REG_MODE(armv4_5
->core_cache
, armv4_5_number_to_mode(i
), 16).dirty
= 0;
1926 int xscale_read_memory(struct target_s
*target
, u32 address
, u32 size
, u32 count
, u8
*buffer
)
1928 armv4_5_common_t
*armv4_5
= target
->arch_info
;
1929 xscale_common_t
*xscale
= armv4_5
->arch_info
;
1934 LOG_DEBUG("address: 0x%8.8x, size: 0x%8.8x, count: 0x%8.8x", address
, size
, count
);
1936 if (target
->state
!= TARGET_HALTED
)
1938 LOG_WARNING("target not halted");
1939 return ERROR_TARGET_NOT_HALTED
;
1942 /* sanitize arguments */
1943 if (((size
!= 4) && (size
!= 2) && (size
!= 1)) || (count
== 0) || !(buffer
))
1944 return ERROR_INVALID_ARGUMENTS
;
1946 if (((size
== 4) && (address
& 0x3u
)) || ((size
== 2) && (address
& 0x1u
)))
1947 return ERROR_TARGET_UNALIGNED_ACCESS
;
1949 /* send memory read request (command 0x1n, n: access size) */
1950 if ((retval
=xscale_send_u32(target
, 0x10 | size
))!=ERROR_OK
)
1953 /* send base address for read request */
1954 if ((retval
=xscale_send_u32(target
, address
))!=ERROR_OK
)
1957 /* send number of requested data words */
1958 if ((retval
=xscale_send_u32(target
, count
))!=ERROR_OK
)
1961 /* receive data from target (count times 32-bit words in host endianness) */
1962 buf32
= malloc(4 * count
);
1963 if ((retval
=xscale_receive(target
, buf32
, count
))!=ERROR_OK
)
1966 /* extract data from host-endian buffer into byte stream */
1967 for (i
= 0; i
< count
; i
++)
1972 target_buffer_set_u32(target
, buffer
, buf32
[i
]);
1976 target_buffer_set_u16(target
, buffer
, buf32
[i
] & 0xffff);
1980 *buffer
++ = buf32
[i
] & 0xff;
1983 LOG_ERROR("should never get here");
1990 /* examine DCSR, to see if Sticky Abort (SA) got set */
1991 if ((retval
=xscale_read_dcsr(target
))!=ERROR_OK
)
1993 if (buf_get_u32(xscale
->reg_cache
->reg_list
[XSCALE_DCSR
].value
, 5, 1) == 1)
1996 if ((retval
=xscale_send_u32(target
, 0x60))!=ERROR_OK
)
1999 return ERROR_TARGET_DATA_ABORT
;
2005 int xscale_write_memory(struct target_s
*target
, u32 address
, u32 size
, u32 count
, u8
*buffer
)
2007 armv4_5_common_t
*armv4_5
= target
->arch_info
;
2008 xscale_common_t
*xscale
= armv4_5
->arch_info
;
2011 LOG_DEBUG("address: 0x%8.8x, size: 0x%8.8x, count: 0x%8.8x", address
, size
, count
);
2013 if (target
->state
!= TARGET_HALTED
)
2015 LOG_WARNING("target not halted");
2016 return ERROR_TARGET_NOT_HALTED
;
2019 /* sanitize arguments */
2020 if (((size
!= 4) && (size
!= 2) && (size
!= 1)) || (count
== 0) || !(buffer
))
2021 return ERROR_INVALID_ARGUMENTS
;
2023 if (((size
== 4) && (address
& 0x3u
)) || ((size
== 2) && (address
& 0x1u
)))
2024 return ERROR_TARGET_UNALIGNED_ACCESS
;
2026 /* send memory write request (command 0x2n, n: access size) */
2027 if ((retval
=xscale_send_u32(target
, 0x20 | size
))!=ERROR_OK
)
2030 /* send base address for read request */
2031 if ((retval
=xscale_send_u32(target
, address
))!=ERROR_OK
)
2034 /* send number of requested data words to be written*/
2035 if ((retval
=xscale_send_u32(target
, count
))!=ERROR_OK
)
2038 /* extract data from host-endian buffer into byte stream */
2040 for (i
= 0; i
< count
; i
++)
2045 value
= target_buffer_get_u32(target
, buffer
);
2046 xscale_send_u32(target
, value
);
2050 value
= target_buffer_get_u16(target
, buffer
);
2051 xscale_send_u32(target
, value
);
2056 xscale_send_u32(target
, value
);
2060 LOG_ERROR("should never get here");
2065 if ((retval
=xscale_send(target
, buffer
, count
, size
))!=ERROR_OK
)
2068 /* examine DCSR, to see if Sticky Abort (SA) got set */
2069 if ((retval
=xscale_read_dcsr(target
))!=ERROR_OK
)
2071 if (buf_get_u32(xscale
->reg_cache
->reg_list
[XSCALE_DCSR
].value
, 5, 1) == 1)
2074 if ((retval
=xscale_send_u32(target
, 0x60))!=ERROR_OK
)
2077 return ERROR_TARGET_DATA_ABORT
;
2083 int xscale_bulk_write_memory(target_t
*target
, u32 address
, u32 count
, u8
*buffer
)
2085 return xscale_write_memory(target
, address
, 4, count
, buffer
);
2088 u32
xscale_get_ttb(target_t
*target
)
2090 armv4_5_common_t
*armv4_5
= target
->arch_info
;
2091 xscale_common_t
*xscale
= armv4_5
->arch_info
;
2094 xscale_get_reg(&xscale
->reg_cache
->reg_list
[XSCALE_TTB
]);
2095 ttb
= buf_get_u32(xscale
->reg_cache
->reg_list
[XSCALE_TTB
].value
, 0, 32);
2100 void xscale_disable_mmu_caches(target_t
*target
, int mmu
, int d_u_cache
, int i_cache
)
2102 armv4_5_common_t
*armv4_5
= target
->arch_info
;
2103 xscale_common_t
*xscale
= armv4_5
->arch_info
;
2106 /* read cp15 control register */
2107 xscale_get_reg(&xscale
->reg_cache
->reg_list
[XSCALE_CTRL
]);
2108 cp15_control
= buf_get_u32(xscale
->reg_cache
->reg_list
[XSCALE_CTRL
].value
, 0, 32);
2111 cp15_control
&= ~0x1U
;
2116 xscale_send_u32(target
, 0x50);
2117 xscale_send_u32(target
, xscale
->cache_clean_address
);
2119 /* invalidate DCache */
2120 xscale_send_u32(target
, 0x51);
2122 cp15_control
&= ~0x4U
;
2127 /* invalidate ICache */
2128 xscale_send_u32(target
, 0x52);
2129 cp15_control
&= ~0x1000U
;
2132 /* write new cp15 control register */
2133 xscale_set_reg_u32(&xscale
->reg_cache
->reg_list
[XSCALE_CTRL
], cp15_control
);
2135 /* execute cpwait to ensure outstanding operations complete */
2136 xscale_send_u32(target
, 0x53);
2139 void xscale_enable_mmu_caches(target_t
*target
, int mmu
, int d_u_cache
, int i_cache
)
2141 armv4_5_common_t
*armv4_5
= target
->arch_info
;
2142 xscale_common_t
*xscale
= armv4_5
->arch_info
;
2145 /* read cp15 control register */
2146 xscale_get_reg(&xscale
->reg_cache
->reg_list
[XSCALE_CTRL
]);
2147 cp15_control
= buf_get_u32(xscale
->reg_cache
->reg_list
[XSCALE_CTRL
].value
, 0, 32);
2150 cp15_control
|= 0x1U
;
2153 cp15_control
|= 0x4U
;
2156 cp15_control
|= 0x1000U
;
2158 /* write new cp15 control register */
2159 xscale_set_reg_u32(&xscale
->reg_cache
->reg_list
[XSCALE_CTRL
], cp15_control
);
2161 /* execute cpwait to ensure outstanding operations complete */
2162 xscale_send_u32(target
, 0x53);
2165 int xscale_set_breakpoint(struct target_s
*target
, breakpoint_t
*breakpoint
)
2168 armv4_5_common_t
*armv4_5
= target
->arch_info
;
2169 xscale_common_t
*xscale
= armv4_5
->arch_info
;
2171 if (target
->state
!= TARGET_HALTED
)
2173 LOG_WARNING("target not halted");
2174 return ERROR_TARGET_NOT_HALTED
;
2177 if (breakpoint
->set
)
2179 LOG_WARNING("breakpoint already set");
2183 if (breakpoint
->type
== BKPT_HARD
)
2185 u32 value
= breakpoint
->address
| 1;
2186 if (!xscale
->ibcr0_used
)
2188 xscale_set_reg_u32(&xscale
->reg_cache
->reg_list
[XSCALE_IBCR0
], value
);
2189 xscale
->ibcr0_used
= 1;
2190 breakpoint
->set
= 1; /* breakpoint set on first breakpoint register */
2192 else if (!xscale
->ibcr1_used
)
2194 xscale_set_reg_u32(&xscale
->reg_cache
->reg_list
[XSCALE_IBCR1
], value
);
2195 xscale
->ibcr1_used
= 1;
2196 breakpoint
->set
= 2; /* breakpoint set on second breakpoint register */
2200 LOG_ERROR("BUG: no hardware comparator available");
2204 else if (breakpoint
->type
== BKPT_SOFT
)
2206 if (breakpoint
->length
== 4)
2208 /* keep the original instruction in target endianness */
2209 if((retval
= target
->type
->read_memory(target
, breakpoint
->address
, 4, 1, breakpoint
->orig_instr
)) != ERROR_OK
)
2213 /* write the original instruction in target endianness (arm7_9->arm_bkpt is host endian) */
2214 if((retval
= target_write_u32(target
, breakpoint
->address
, xscale
->arm_bkpt
)) != ERROR_OK
)
2221 /* keep the original instruction in target endianness */
2222 if((retval
= target
->type
->read_memory(target
, breakpoint
->address
, 2, 1, breakpoint
->orig_instr
)) != ERROR_OK
)
2226 /* write the original instruction in target endianness (arm7_9->arm_bkpt is host endian) */
2227 if((retval
= target_write_u32(target
, breakpoint
->address
, xscale
->thumb_bkpt
)) != ERROR_OK
)
2232 breakpoint
->set
= 1;
2238 int xscale_add_breakpoint(struct target_s
*target
, breakpoint_t
*breakpoint
)
2240 armv4_5_common_t
*armv4_5
= target
->arch_info
;
2241 xscale_common_t
*xscale
= armv4_5
->arch_info
;
2243 if (target
->state
!= TARGET_HALTED
)
2245 LOG_WARNING("target not halted");
2246 return ERROR_TARGET_NOT_HALTED
;
2249 if ((breakpoint
->type
== BKPT_HARD
) && (xscale
->ibcr_available
< 1))
2251 LOG_INFO("no breakpoint unit available for hardware breakpoint");
2252 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
2255 if ((breakpoint
->length
!= 2) && (breakpoint
->length
!= 4))
2257 LOG_INFO("only breakpoints of two (Thumb) or four (ARM) bytes length supported");
2258 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
2261 if (breakpoint
->type
== BKPT_HARD
)
2263 xscale
->ibcr_available
--;
2269 int xscale_unset_breakpoint(struct target_s
*target
, breakpoint_t
*breakpoint
)
2272 armv4_5_common_t
*armv4_5
= target
->arch_info
;
2273 xscale_common_t
*xscale
= armv4_5
->arch_info
;
2275 if (target
->state
!= TARGET_HALTED
)
2277 LOG_WARNING("target not halted");
2278 return ERROR_TARGET_NOT_HALTED
;
2281 if (!breakpoint
->set
)
2283 LOG_WARNING("breakpoint not set");
2287 if (breakpoint
->type
== BKPT_HARD
)
2289 if (breakpoint
->set
== 1)
2291 xscale_set_reg_u32(&xscale
->reg_cache
->reg_list
[XSCALE_IBCR0
], 0x0);
2292 xscale
->ibcr0_used
= 0;
2294 else if (breakpoint
->set
== 2)
2296 xscale_set_reg_u32(&xscale
->reg_cache
->reg_list
[XSCALE_IBCR1
], 0x0);
2297 xscale
->ibcr1_used
= 0;
2299 breakpoint
->set
= 0;
2303 /* restore original instruction (kept in target endianness) */
2304 if (breakpoint
->length
== 4)
2306 if((retval
= target
->type
->write_memory(target
, breakpoint
->address
, 4, 1, breakpoint
->orig_instr
)) != ERROR_OK
)
2313 if((retval
= target
->type
->write_memory(target
, breakpoint
->address
, 2, 1, breakpoint
->orig_instr
)) != ERROR_OK
)
2318 breakpoint
->set
= 0;
2324 int xscale_remove_breakpoint(struct target_s
*target
, breakpoint_t
*breakpoint
)
2326 armv4_5_common_t
*armv4_5
= target
->arch_info
;
2327 xscale_common_t
*xscale
= armv4_5
->arch_info
;
2329 if (target
->state
!= TARGET_HALTED
)
2331 LOG_WARNING("target not halted");
2332 return ERROR_TARGET_NOT_HALTED
;
2335 if (breakpoint
->set
)
2337 xscale_unset_breakpoint(target
, breakpoint
);
2340 if (breakpoint
->type
== BKPT_HARD
)
2341 xscale
->ibcr_available
++;
2346 int xscale_set_watchpoint(struct target_s
*target
, watchpoint_t
*watchpoint
)
2348 armv4_5_common_t
*armv4_5
= target
->arch_info
;
2349 xscale_common_t
*xscale
= armv4_5
->arch_info
;
2351 reg_t
*dbcon
= &xscale
->reg_cache
->reg_list
[XSCALE_DBCON
];
2352 u32 dbcon_value
= buf_get_u32(dbcon
->value
, 0, 32);
2354 if (target
->state
!= TARGET_HALTED
)
2356 LOG_WARNING("target not halted");
2357 return ERROR_TARGET_NOT_HALTED
;
2360 xscale_get_reg(dbcon
);
2362 switch (watchpoint
->rw
)
2374 LOG_ERROR("BUG: watchpoint->rw neither read, write nor access");
2377 if (!xscale
->dbr0_used
)
2379 xscale_set_reg_u32(&xscale
->reg_cache
->reg_list
[XSCALE_DBR0
], watchpoint
->address
);
2380 dbcon_value
|= enable
;
2381 xscale_set_reg_u32(dbcon
, dbcon_value
);
2382 watchpoint
->set
= 1;
2383 xscale
->dbr0_used
= 1;
2385 else if (!xscale
->dbr1_used
)
2387 xscale_set_reg_u32(&xscale
->reg_cache
->reg_list
[XSCALE_DBR1
], watchpoint
->address
);
2388 dbcon_value
|= enable
<< 2;
2389 xscale_set_reg_u32(dbcon
, dbcon_value
);
2390 watchpoint
->set
= 2;
2391 xscale
->dbr1_used
= 1;
2395 LOG_ERROR("BUG: no hardware comparator available");
2402 int xscale_add_watchpoint(struct target_s
*target
, watchpoint_t
*watchpoint
)
2404 armv4_5_common_t
*armv4_5
= target
->arch_info
;
2405 xscale_common_t
*xscale
= armv4_5
->arch_info
;
2407 if (target
->state
!= TARGET_HALTED
)
2409 LOG_WARNING("target not halted");
2410 return ERROR_TARGET_NOT_HALTED
;
2413 if (xscale
->dbr_available
< 1)
2415 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
2418 if ((watchpoint
->length
!= 1) && (watchpoint
->length
!= 2) && (watchpoint
->length
!= 4))
2420 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
2423 xscale
->dbr_available
--;
2428 int xscale_unset_watchpoint(struct target_s
*target
, watchpoint_t
*watchpoint
)
2430 armv4_5_common_t
*armv4_5
= target
->arch_info
;
2431 xscale_common_t
*xscale
= armv4_5
->arch_info
;
2432 reg_t
*dbcon
= &xscale
->reg_cache
->reg_list
[XSCALE_DBCON
];
2433 u32 dbcon_value
= buf_get_u32(dbcon
->value
, 0, 32);
2435 if (target
->state
!= TARGET_HALTED
)
2437 LOG_WARNING("target not halted");
2438 return ERROR_TARGET_NOT_HALTED
;
2441 if (!watchpoint
->set
)
2443 LOG_WARNING("breakpoint not set");
2447 if (watchpoint
->set
== 1)
2449 dbcon_value
&= ~0x3;
2450 xscale_set_reg_u32(dbcon
, dbcon_value
);
2451 xscale
->dbr0_used
= 0;
2453 else if (watchpoint
->set
== 2)
2455 dbcon_value
&= ~0xc;
2456 xscale_set_reg_u32(dbcon
, dbcon_value
);
2457 xscale
->dbr1_used
= 0;
2459 watchpoint
->set
= 0;
2464 int xscale_remove_watchpoint(struct target_s
*target
, watchpoint_t
*watchpoint
)
2466 armv4_5_common_t
*armv4_5
= target
->arch_info
;
2467 xscale_common_t
*xscale
= armv4_5
->arch_info
;
2469 if (target
->state
!= TARGET_HALTED
)
2471 LOG_WARNING("target not halted");
2472 return ERROR_TARGET_NOT_HALTED
;
2475 if (watchpoint
->set
)
2477 xscale_unset_watchpoint(target
, watchpoint
);
2480 xscale
->dbr_available
++;
2485 void xscale_enable_watchpoints(struct target_s
*target
)
2487 watchpoint_t
*watchpoint
= target
->watchpoints
;
2491 if (watchpoint
->set
== 0)
2492 xscale_set_watchpoint(target
, watchpoint
);
2493 watchpoint
= watchpoint
->next
;
2497 void xscale_enable_breakpoints(struct target_s
*target
)
2499 breakpoint_t
*breakpoint
= target
->breakpoints
;
2501 /* set any pending breakpoints */
2504 if (breakpoint
->set
== 0)
2505 xscale_set_breakpoint(target
, breakpoint
);
2506 breakpoint
= breakpoint
->next
;
2510 int xscale_get_reg(reg_t
*reg
)
2512 xscale_reg_t
*arch_info
= reg
->arch_info
;
2513 target_t
*target
= arch_info
->target
;
2514 armv4_5_common_t
*armv4_5
= target
->arch_info
;
2515 xscale_common_t
*xscale
= armv4_5
->arch_info
;
2517 /* DCSR, TX and RX are accessible via JTAG */
2518 if (strcmp(reg
->name
, "XSCALE_DCSR") == 0)
2520 return xscale_read_dcsr(arch_info
->target
);
2522 else if (strcmp(reg
->name
, "XSCALE_TX") == 0)
2524 /* 1 = consume register content */
2525 return xscale_read_tx(arch_info
->target
, 1);
2527 else if (strcmp(reg
->name
, "XSCALE_RX") == 0)
2529 /* can't read from RX register (host -> debug handler) */
2532 else if (strcmp(reg
->name
, "XSCALE_TXRXCTRL") == 0)
2534 /* can't (explicitly) read from TXRXCTRL register */
2537 else /* Other DBG registers have to be transfered by the debug handler */
2539 /* send CP read request (command 0x40) */
2540 xscale_send_u32(target
, 0x40);
2542 /* send CP register number */
2543 xscale_send_u32(target
, arch_info
->dbg_handler_number
);
2545 /* read register value */
2546 xscale_read_tx(target
, 1);
2547 buf_cpy(xscale
->reg_cache
->reg_list
[XSCALE_TX
].value
, reg
->value
, 32);
2556 int xscale_set_reg(reg_t
*reg
, u8
* buf
)
2558 xscale_reg_t
*arch_info
= reg
->arch_info
;
2559 target_t
*target
= arch_info
->target
;
2560 armv4_5_common_t
*armv4_5
= target
->arch_info
;
2561 xscale_common_t
*xscale
= armv4_5
->arch_info
;
2562 u32 value
= buf_get_u32(buf
, 0, 32);
2564 /* DCSR, TX and RX are accessible via JTAG */
2565 if (strcmp(reg
->name
, "XSCALE_DCSR") == 0)
2567 buf_set_u32(xscale
->reg_cache
->reg_list
[XSCALE_DCSR
].value
, 0, 32, value
);
2568 return xscale_write_dcsr(arch_info
->target
, -1, -1);
2570 else if (strcmp(reg
->name
, "XSCALE_RX") == 0)
2572 buf_set_u32(xscale
->reg_cache
->reg_list
[XSCALE_RX
].value
, 0, 32, value
);
2573 return xscale_write_rx(arch_info
->target
);
2575 else if (strcmp(reg
->name
, "XSCALE_TX") == 0)
2577 /* can't write to TX register (debug-handler -> host) */
2580 else if (strcmp(reg
->name
, "XSCALE_TXRXCTRL") == 0)
2582 /* can't (explicitly) write to TXRXCTRL register */
2585 else /* Other DBG registers have to be transfered by the debug handler */
2587 /* send CP write request (command 0x41) */
2588 xscale_send_u32(target
, 0x41);
2590 /* send CP register number */
2591 xscale_send_u32(target
, arch_info
->dbg_handler_number
);
2593 /* send CP register value */
2594 xscale_send_u32(target
, value
);
2595 buf_set_u32(reg
->value
, 0, 32, value
);
2601 /* convenience wrapper to access XScale specific registers */
2602 int xscale_set_reg_u32(reg_t
*reg
, u32 value
)
2606 buf_set_u32(buf
, 0, 32, value
);
2608 return xscale_set_reg(reg
, buf
);
2611 int xscale_write_dcsr_sw(target_t
*target
, u32 value
)
2613 /* get pointers to arch-specific information */
2614 armv4_5_common_t
*armv4_5
= target
->arch_info
;
2615 xscale_common_t
*xscale
= armv4_5
->arch_info
;
2616 reg_t
*dcsr
= &xscale
->reg_cache
->reg_list
[XSCALE_DCSR
];
2617 xscale_reg_t
*dcsr_arch_info
= dcsr
->arch_info
;
2619 /* send CP write request (command 0x41) */
2620 xscale_send_u32(target
, 0x41);
2622 /* send CP register number */
2623 xscale_send_u32(target
, dcsr_arch_info
->dbg_handler_number
);
2625 /* send CP register value */
2626 xscale_send_u32(target
, value
);
2627 buf_set_u32(dcsr
->value
, 0, 32, value
);
2632 int xscale_read_trace(target_t
*target
)
2634 /* get pointers to arch-specific information */
2635 armv4_5_common_t
*armv4_5
= target
->arch_info
;
2636 xscale_common_t
*xscale
= armv4_5
->arch_info
;
2637 xscale_trace_data_t
**trace_data_p
;
2639 /* 258 words from debug handler
2640 * 256 trace buffer entries
2641 * 2 checkpoint addresses
2643 u32 trace_buffer
[258];
2644 int is_address
[256];
2647 if (target
->state
!= TARGET_HALTED
)
2649 LOG_WARNING("target must be stopped to read trace data");
2650 return ERROR_TARGET_NOT_HALTED
;
2653 /* send read trace buffer command (command 0x61) */
2654 xscale_send_u32(target
, 0x61);
2656 /* receive trace buffer content */
2657 xscale_receive(target
, trace_buffer
, 258);
2659 /* parse buffer backwards to identify address entries */
2660 for (i
= 255; i
>= 0; i
--)
2663 if (((trace_buffer
[i
] & 0xf0) == 0x90) ||
2664 ((trace_buffer
[i
] & 0xf0) == 0xd0))
2667 is_address
[--i
] = 1;
2669 is_address
[--i
] = 1;
2671 is_address
[--i
] = 1;
2673 is_address
[--i
] = 1;
2678 /* search first non-zero entry */
2679 for (j
= 0; (j
< 256) && (trace_buffer
[j
] == 0) && (!is_address
[j
]); j
++)
2684 LOG_DEBUG("no trace data collected");
2685 return ERROR_XSCALE_NO_TRACE_DATA
;
2688 for (trace_data_p
= &xscale
->trace
.data
; *trace_data_p
; trace_data_p
= &(*trace_data_p
)->next
)
2691 *trace_data_p
= malloc(sizeof(xscale_trace_data_t
));
2692 (*trace_data_p
)->next
= NULL
;
2693 (*trace_data_p
)->chkpt0
= trace_buffer
[256];
2694 (*trace_data_p
)->chkpt1
= trace_buffer
[257];
2695 (*trace_data_p
)->last_instruction
= buf_get_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32);
2696 (*trace_data_p
)->entries
= malloc(sizeof(xscale_trace_entry_t
) * (256 - j
));
2697 (*trace_data_p
)->depth
= 256 - j
;
2699 for (i
= j
; i
< 256; i
++)
2701 (*trace_data_p
)->entries
[i
- j
].data
= trace_buffer
[i
];
2703 (*trace_data_p
)->entries
[i
- j
].type
= XSCALE_TRACE_ADDRESS
;
2705 (*trace_data_p
)->entries
[i
- j
].type
= XSCALE_TRACE_MESSAGE
;
2711 int xscale_read_instruction(target_t
*target
, arm_instruction_t
*instruction
)
2713 /* get pointers to arch-specific information */
2714 armv4_5_common_t
*armv4_5
= target
->arch_info
;
2715 xscale_common_t
*xscale
= armv4_5
->arch_info
;
2722 if (!xscale
->trace
.image
)
2723 return ERROR_TRACE_IMAGE_UNAVAILABLE
;
2725 /* search for the section the current instruction belongs to */
2726 for (i
= 0; i
< xscale
->trace
.image
->num_sections
; i
++)
2728 if ((xscale
->trace
.image
->sections
[i
].base_address
<= xscale
->trace
.current_pc
) &&
2729 (xscale
->trace
.image
->sections
[i
].base_address
+ xscale
->trace
.image
->sections
[i
].size
> xscale
->trace
.current_pc
))
2738 /* current instruction couldn't be found in the image */
2739 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE
;
2742 if (xscale
->trace
.core_state
== ARMV4_5_STATE_ARM
)
2745 if ((retval
= image_read_section(xscale
->trace
.image
, section
,
2746 xscale
->trace
.current_pc
- xscale
->trace
.image
->sections
[section
].base_address
,
2747 4, buf
, &size_read
)) != ERROR_OK
)
2749 LOG_ERROR("error while reading instruction: %i", retval
);
2750 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE
;
2752 opcode
= target_buffer_get_u32(target
, buf
);
2753 arm_evaluate_opcode(opcode
, xscale
->trace
.current_pc
, instruction
);
2755 else if (xscale
->trace
.core_state
== ARMV4_5_STATE_THUMB
)
2758 if ((retval
= image_read_section(xscale
->trace
.image
, section
,
2759 xscale
->trace
.current_pc
- xscale
->trace
.image
->sections
[section
].base_address
,
2760 2, buf
, &size_read
)) != ERROR_OK
)
2762 LOG_ERROR("error while reading instruction: %i", retval
);
2763 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE
;
2765 opcode
= target_buffer_get_u16(target
, buf
);
2766 thumb_evaluate_opcode(opcode
, xscale
->trace
.current_pc
, instruction
);
2770 LOG_ERROR("BUG: unknown core state encountered");
2777 int xscale_branch_address(xscale_trace_data_t
*trace_data
, int i
, u32
*target
)
2779 /* if there are less than four entries prior to the indirect branch message
2780 * we can't extract the address */
2786 *target
= (trace_data
->entries
[i
-1].data
) | (trace_data
->entries
[i
-2].data
<< 8) |
2787 (trace_data
->entries
[i
-3].data
<< 16) | (trace_data
->entries
[i
-4].data
<< 24);
2792 int xscale_analyze_trace(target_t
*target
, command_context_t
*cmd_ctx
)
2794 /* get pointers to arch-specific information */
2795 armv4_5_common_t
*armv4_5
= target
->arch_info
;
2796 xscale_common_t
*xscale
= armv4_5
->arch_info
;
2799 xscale_trace_data_t
*trace_data
= xscale
->trace
.data
;
2808 xscale
->trace
.core_state
= ARMV4_5_STATE_ARM
;
2813 for (i
= 0; i
< trace_data
->depth
; i
++)
2819 if (trace_data
->entries
[i
].type
== XSCALE_TRACE_ADDRESS
)
2822 switch ((trace_data
->entries
[i
].data
& 0xf0) >> 4)
2824 case 0: /* Exceptions */
2832 exception
= (trace_data
->entries
[i
].data
& 0x70) >> 4;
2834 next_pc
= (trace_data
->entries
[i
].data
& 0xf0) >> 2;
2835 command_print(cmd_ctx
, "--- exception %i ---", (trace_data
->entries
[i
].data
& 0xf0) >> 4);
2837 case 8: /* Direct Branch */
2840 case 9: /* Indirect Branch */
2842 if (xscale_branch_address(trace_data
, i
, &next_pc
) == 0)
2847 case 13: /* Checkpointed Indirect Branch */
2848 if (xscale_branch_address(trace_data
, i
, &next_pc
) == 0)
2851 if (((chkpt
== 0) && (next_pc
!= trace_data
->chkpt0
))
2852 || ((chkpt
== 1) && (next_pc
!= trace_data
->chkpt1
)))
2853 LOG_WARNING("checkpointed indirect branch target address doesn't match checkpoint");
2855 /* explicit fall-through */
2856 case 12: /* Checkpointed Direct Branch */
2861 next_pc
= trace_data
->chkpt0
;
2864 else if (chkpt
== 1)
2867 next_pc
= trace_data
->chkpt0
;
2872 LOG_WARNING("more than two checkpointed branches encountered");
2875 case 15: /* Roll-over */
2878 default: /* Reserved */
2879 command_print(cmd_ctx
, "--- reserved trace message ---");
2880 LOG_ERROR("BUG: trace message %i is reserved", (trace_data
->entries
[i
].data
& 0xf0) >> 4);
2884 if (xscale
->trace
.pc_ok
)
2886 int executed
= (trace_data
->entries
[i
].data
& 0xf) + rollover
* 16;
2887 arm_instruction_t instruction
;
2889 if ((exception
== 6) || (exception
== 7))
2891 /* IRQ or FIQ exception, no instruction executed */
2895 while (executed
-- >= 0)
2897 if ((retval
= xscale_read_instruction(target
, &instruction
)) != ERROR_OK
)
2899 /* can't continue tracing with no image available */
2900 if (retval
== ERROR_TRACE_IMAGE_UNAVAILABLE
)
2904 else if (retval
== ERROR_TRACE_INSTRUCTION_UNAVAILABLE
)
2906 /* TODO: handle incomplete images */
2910 /* a precise abort on a load to the PC is included in the incremental
2911 * word count, other instructions causing data aborts are not included
2913 if ((executed
== 0) && (exception
== 4)
2914 && ((instruction
.type
>= ARM_LDR
) && (instruction
.type
<= ARM_LDM
)))
2916 if ((instruction
.type
== ARM_LDM
)
2917 && ((instruction
.info
.load_store_multiple
.register_list
& 0x8000) == 0))
2921 else if (((instruction
.type
>= ARM_LDR
) && (instruction
.type
<= ARM_LDRSH
))
2922 && (instruction
.info
.load_store
.Rd
!= 15))
2928 /* only the last instruction executed
2929 * (the one that caused the control flow change)
2930 * could be a taken branch
2932 if (((executed
== -1) && (branch
== 1)) &&
2933 (((instruction
.type
== ARM_B
) ||
2934 (instruction
.type
== ARM_BL
) ||
2935 (instruction
.type
== ARM_BLX
)) &&
2936 (instruction
.info
.b_bl_bx_blx
.target_address
!= 0xffffffff)))
2938 xscale
->trace
.current_pc
= instruction
.info
.b_bl_bx_blx
.target_address
;
2942 xscale
->trace
.current_pc
+= (xscale
->trace
.core_state
== ARMV4_5_STATE_ARM
) ? 4 : 2;
2944 command_print(cmd_ctx
, "%s", instruction
.text
);
2952 xscale
->trace
.current_pc
= next_pc
;
2953 xscale
->trace
.pc_ok
= 1;
2957 for (; xscale
->trace
.current_pc
< trace_data
->last_instruction
; xscale
->trace
.current_pc
+= (xscale
->trace
.core_state
== ARMV4_5_STATE_ARM
) ? 4 : 2)
2959 arm_instruction_t instruction
;
2960 if ((retval
= xscale_read_instruction(target
, &instruction
)) != ERROR_OK
)
2962 /* can't continue tracing with no image available */
2963 if (retval
== ERROR_TRACE_IMAGE_UNAVAILABLE
)
2967 else if (retval
== ERROR_TRACE_INSTRUCTION_UNAVAILABLE
)
2969 /* TODO: handle incomplete images */
2972 command_print(cmd_ctx
, "%s", instruction
.text
);
2975 trace_data
= trace_data
->next
;
2981 void xscale_build_reg_cache(target_t
*target
)
2983 /* get pointers to arch-specific information */
2984 armv4_5_common_t
*armv4_5
= target
->arch_info
;
2985 xscale_common_t
*xscale
= armv4_5
->arch_info
;
2987 reg_cache_t
**cache_p
= register_get_last_cache_p(&target
->reg_cache
);
2988 xscale_reg_t
*arch_info
= malloc(sizeof(xscale_reg_arch_info
));
2990 int num_regs
= sizeof(xscale_reg_arch_info
) / sizeof(xscale_reg_t
);
2992 (*cache_p
) = armv4_5_build_reg_cache(target
, armv4_5
);
2993 armv4_5
->core_cache
= (*cache_p
);
2995 /* register a register arch-type for XScale dbg registers only once */
2996 if (xscale_reg_arch_type
== -1)
2997 xscale_reg_arch_type
= register_reg_arch_type(xscale_get_reg
, xscale_set_reg
);
2999 (*cache_p
)->next
= malloc(sizeof(reg_cache_t
));
3000 cache_p
= &(*cache_p
)->next
;
3002 /* fill in values for the xscale reg cache */
3003 (*cache_p
)->name
= "XScale registers";
3004 (*cache_p
)->next
= NULL
;
3005 (*cache_p
)->reg_list
= malloc(num_regs
* sizeof(reg_t
));
3006 (*cache_p
)->num_regs
= num_regs
;
3008 for (i
= 0; i
< num_regs
; i
++)
3010 (*cache_p
)->reg_list
[i
].name
= xscale_reg_list
[i
];
3011 (*cache_p
)->reg_list
[i
].value
= calloc(4, 1);
3012 (*cache_p
)->reg_list
[i
].dirty
= 0;
3013 (*cache_p
)->reg_list
[i
].valid
= 0;
3014 (*cache_p
)->reg_list
[i
].size
= 32;
3015 (*cache_p
)->reg_list
[i
].bitfield_desc
= NULL
;
3016 (*cache_p
)->reg_list
[i
].num_bitfields
= 0;
3017 (*cache_p
)->reg_list
[i
].arch_info
= &arch_info
[i
];
3018 (*cache_p
)->reg_list
[i
].arch_type
= xscale_reg_arch_type
;
3019 arch_info
[i
] = xscale_reg_arch_info
[i
];
3020 arch_info
[i
].target
= target
;
3023 xscale
->reg_cache
= (*cache_p
);
3026 int xscale_init_target(struct command_context_s
*cmd_ctx
, struct target_s
*target
)
3031 int xscale_quit(void)
3036 int xscale_init_arch_info(target_t
*target
, xscale_common_t
*xscale
, jtag_tap_t
*tap
, const char *variant
)
3038 armv4_5_common_t
*armv4_5
;
3039 u32 high_reset_branch
, low_reset_branch
;
3042 armv4_5
= &xscale
->armv4_5_common
;
3044 /* store architecture specfic data (none so far) */
3045 xscale
->arch_info
= NULL
;
3046 xscale
->common_magic
= XSCALE_COMMON_MAGIC
;
3048 /* remember the variant (PXA25x, PXA27x, IXP42x, ...) */
3049 xscale
->variant
= strdup(variant
);
3051 /* prepare JTAG information for the new target */
3052 xscale
->jtag_info
.tap
= tap
;
3054 xscale
->jtag_info
.dbgrx
= 0x02;
3055 xscale
->jtag_info
.dbgtx
= 0x10;
3056 xscale
->jtag_info
.dcsr
= 0x09;
3057 xscale
->jtag_info
.ldic
= 0x07;
3059 if ((strcmp(xscale
->variant
, "pxa250") == 0) ||
3060 (strcmp(xscale
->variant
, "pxa255") == 0) ||
3061 (strcmp(xscale
->variant
, "pxa26x") == 0))
3063 xscale
->jtag_info
.ir_length
= 5;
3065 else if ((strcmp(xscale
->variant
, "pxa27x") == 0) ||
3066 (strcmp(xscale
->variant
, "ixp42x") == 0) ||
3067 (strcmp(xscale
->variant
, "ixp45x") == 0) ||
3068 (strcmp(xscale
->variant
, "ixp46x") == 0))
3070 xscale
->jtag_info
.ir_length
= 7;
3073 /* the debug handler isn't installed (and thus not running) at this time */
3074 xscale
->handler_installed
= 0;
3075 xscale
->handler_running
= 0;
3076 xscale
->handler_address
= 0xfe000800;
3078 /* clear the vectors we keep locally for reference */
3079 memset(xscale
->low_vectors
, 0, sizeof(xscale
->low_vectors
));
3080 memset(xscale
->high_vectors
, 0, sizeof(xscale
->high_vectors
));
3082 /* no user-specified vectors have been configured yet */
3083 xscale
->static_low_vectors_set
= 0x0;
3084 xscale
->static_high_vectors_set
= 0x0;
3086 /* calculate branches to debug handler */
3087 low_reset_branch
= (xscale
->handler_address
+ 0x20 - 0x0 - 0x8) >> 2;
3088 high_reset_branch
= (xscale
->handler_address
+ 0x20 - 0xffff0000 - 0x8) >> 2;
3090 xscale
->low_vectors
[0] = ARMV4_5_B((low_reset_branch
& 0xffffff), 0);
3091 xscale
->high_vectors
[0] = ARMV4_5_B((high_reset_branch
& 0xffffff), 0);
3093 for (i
= 1; i
<= 7; i
++)
3095 xscale
->low_vectors
[i
] = ARMV4_5_B(0xfffffe, 0);
3096 xscale
->high_vectors
[i
] = ARMV4_5_B(0xfffffe, 0);
3099 /* 64kB aligned region used for DCache cleaning */
3100 xscale
->cache_clean_address
= 0xfffe0000;
3102 xscale
->hold_rst
= 0;
3103 xscale
->external_debug_break
= 0;
3105 xscale
->ibcr_available
= 2;
3106 xscale
->ibcr0_used
= 0;
3107 xscale
->ibcr1_used
= 0;
3109 xscale
->dbr_available
= 2;
3110 xscale
->dbr0_used
= 0;
3111 xscale
->dbr1_used
= 0;
3113 xscale
->arm_bkpt
= ARMV5_BKPT(0x0);
3114 xscale
->thumb_bkpt
= ARMV5_T_BKPT(0x0) & 0xffff;
3116 xscale
->vector_catch
= 0x1;
3118 xscale
->trace
.capture_status
= TRACE_IDLE
;
3119 xscale
->trace
.data
= NULL
;
3120 xscale
->trace
.image
= NULL
;
3121 xscale
->trace
.buffer_enabled
= 0;
3122 xscale
->trace
.buffer_fill
= 0;
3124 /* prepare ARMv4/5 specific information */
3125 armv4_5
->arch_info
= xscale
;
3126 armv4_5
->read_core_reg
= xscale_read_core_reg
;
3127 armv4_5
->write_core_reg
= xscale_write_core_reg
;
3128 armv4_5
->full_context
= xscale_full_context
;
3130 armv4_5_init_arch_info(target
, armv4_5
);
3132 xscale
->armv4_5_mmu
.armv4_5_cache
.ctype
= -1;
3133 xscale
->armv4_5_mmu
.get_ttb
= xscale_get_ttb
;
3134 xscale
->armv4_5_mmu
.read_memory
= xscale_read_memory
;
3135 xscale
->armv4_5_mmu
.write_memory
= xscale_write_memory
;
3136 xscale
->armv4_5_mmu
.disable_mmu_caches
= xscale_disable_mmu_caches
;
3137 xscale
->armv4_5_mmu
.enable_mmu_caches
= xscale_enable_mmu_caches
;
3138 xscale
->armv4_5_mmu
.has_tiny_pages
= 1;
3139 xscale
->armv4_5_mmu
.mmu_enabled
= 0;
3144 /* target xscale <endianess> <startup_mode> <chain_pos> <variant> */
3145 int xscale_target_create(struct target_s
*target
, Jim_Interp
*interp
)
3147 xscale_common_t
*xscale
= calloc(1,sizeof(xscale_common_t
));
3149 xscale_init_arch_info(target
, xscale
, target
->tap
, target
->variant
);
3150 xscale_build_reg_cache(target
);
3155 int xscale_handle_debug_handler_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
3157 target_t
*target
= NULL
;
3158 armv4_5_common_t
*armv4_5
;
3159 xscale_common_t
*xscale
;
3161 u32 handler_address
;
3165 LOG_ERROR("'xscale debug_handler <target#> <address>' command takes two required operands");
3169 if ((target
= get_target_by_num(strtoul(args
[0], NULL
, 0))) == NULL
)
3171 LOG_ERROR("no target '%s' configured", args
[0]);
3175 if (xscale_get_arch_pointers(target
, &armv4_5
, &xscale
) != ERROR_OK
)
3180 handler_address
= strtoul(args
[1], NULL
, 0);
3182 if (((handler_address
>= 0x800) && (handler_address
<= 0x1fef800)) ||
3183 ((handler_address
>= 0xfe000800) && (handler_address
<= 0xfffff800)))
3185 xscale
->handler_address
= handler_address
;
3189 LOG_ERROR("xscale debug_handler <address> must be between 0x800 and 0x1fef800 or between 0xfe000800 and 0xfffff800");
3196 int xscale_handle_cache_clean_address_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
3198 target_t
*target
= NULL
;
3199 armv4_5_common_t
*armv4_5
;
3200 xscale_common_t
*xscale
;
3202 u32 cache_clean_address
;
3206 return ERROR_COMMAND_SYNTAX_ERROR
;
3209 if ((target
= get_target_by_num(strtoul(args
[0], NULL
, 0))) == NULL
)
3211 LOG_ERROR("no target '%s' configured", args
[0]);
3215 if (xscale_get_arch_pointers(target
, &armv4_5
, &xscale
) != ERROR_OK
)
3220 cache_clean_address
= strtoul(args
[1], NULL
, 0);
3222 if (cache_clean_address
& 0xffff)
3224 LOG_ERROR("xscale cache_clean_address <address> must be 64kb aligned");
3228 xscale
->cache_clean_address
= cache_clean_address
;
3234 int xscale_handle_cache_info_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
3236 target_t
*target
= get_current_target(cmd_ctx
);
3237 armv4_5_common_t
*armv4_5
;
3238 xscale_common_t
*xscale
;
3240 if (xscale_get_arch_pointers(target
, &armv4_5
, &xscale
) != ERROR_OK
)
3245 return armv4_5_handle_cache_info_command(cmd_ctx
, &xscale
->armv4_5_mmu
.armv4_5_cache
);
3248 static int xscale_virt2phys(struct target_s
*target
, u32
virtual, u32
*physical
)
3250 armv4_5_common_t
*armv4_5
;
3251 xscale_common_t
*xscale
;
3258 if ((retval
= xscale_get_arch_pointers(target
, &armv4_5
, &xscale
)) != ERROR_OK
)
3262 u32 ret
= armv4_5_mmu_translate_va(target
, &xscale
->armv4_5_mmu
, virtual, &type
, &cb
, &domain
, &ap
);
3271 static int xscale_mmu(struct target_s
*target
, int *enabled
)
3273 armv4_5_common_t
*armv4_5
= target
->arch_info
;
3274 xscale_common_t
*xscale
= armv4_5
->arch_info
;
3276 if (target
->state
!= TARGET_HALTED
)
3278 LOG_ERROR("Target not halted");
3279 return ERROR_TARGET_INVALID
;
3281 *enabled
= xscale
->armv4_5_mmu
.mmu_enabled
;
3285 int xscale_handle_mmu_command(command_context_t
*cmd_ctx
, char *cmd
, char **args
, int argc
)
3287 target_t
*target
= get_current_target(cmd_ctx
);
3288 armv4_5_common_t
*armv4_5
;
3289 xscale_common_t
*xscale
;
3291 if (xscale_get_arch_pointers(target
, &armv4_5
, &xscale
) != ERROR_OK
)
3296 if (target
->state
!= TARGET_HALTED
)
3298 command_print(cmd_ctx
, "target must be stopped for \"%s\" command", cmd
);
3304 if (strcmp("enable", args
[0]) == 0)
3306 xscale_enable_mmu_caches(target
, 1, 0, 0);
3307 xscale
->armv4_5_mmu
.mmu_enabled
= 1;
3309 else if (strcmp("disable", args
[0]) == 0)
3311 xscale_disable_mmu_caches(target
, 1, 0, 0);
3312 xscale
->armv4_5_mmu
.mmu_enabled
= 0;
3316 command_print(cmd_ctx
, "mmu %s", (xscale
->armv4_5_mmu
.mmu_enabled
) ? "enabled" : "disabled");
3321 int xscale_handle_idcache_command(command_context_t
*cmd_ctx
, char *cmd
, char **args
, int argc
)
3323 target_t
*target
= get_current_target(cmd_ctx
);
3324 armv4_5_common_t
*armv4_5
;
3325 xscale_common_t
*xscale
;
3326 int icache
= 0, dcache
= 0;
3328 if (xscale_get_arch_pointers(target
, &armv4_5
, &xscale
) != ERROR_OK
)
3333 if (target
->state
!= TARGET_HALTED
)
3335 command_print(cmd_ctx
, "target must be stopped for \"%s\" command", cmd
);
3339 if (strcmp(cmd
, "icache") == 0)
3341 else if (strcmp(cmd
, "dcache") == 0)
3346 if (strcmp("enable", args
[0]) == 0)
3348 xscale_enable_mmu_caches(target
, 0, dcache
, icache
);
3351 xscale
->armv4_5_mmu
.armv4_5_cache
.i_cache_enabled
= 1;
3353 xscale
->armv4_5_mmu
.armv4_5_cache
.d_u_cache_enabled
= 1;
3355 else if (strcmp("disable", args
[0]) == 0)
3357 xscale_disable_mmu_caches(target
, 0, dcache
, icache
);
3360 xscale
->armv4_5_mmu
.armv4_5_cache
.i_cache_enabled
= 0;
3362 xscale
->armv4_5_mmu
.armv4_5_cache
.d_u_cache_enabled
= 0;
3367 command_print(cmd_ctx
, "icache %s", (xscale
->armv4_5_mmu
.armv4_5_cache
.i_cache_enabled
) ? "enabled" : "disabled");
3370 command_print(cmd_ctx
, "dcache %s", (xscale
->armv4_5_mmu
.armv4_5_cache
.d_u_cache_enabled
) ? "enabled" : "disabled");
3375 int xscale_handle_vector_catch_command(command_context_t
*cmd_ctx
, char *cmd
, char **args
, int argc
)
3377 target_t
*target
= get_current_target(cmd_ctx
);
3378 armv4_5_common_t
*armv4_5
;
3379 xscale_common_t
*xscale
;
3381 if (xscale_get_arch_pointers(target
, &armv4_5
, &xscale
) != ERROR_OK
)
3388 command_print(cmd_ctx
, "usage: xscale vector_catch [mask]");
3392 xscale
->vector_catch
= strtoul(args
[0], NULL
, 0);
3393 buf_set_u32(xscale
->reg_cache
->reg_list
[XSCALE_DCSR
].value
, 16, 8, xscale
->vector_catch
);
3394 xscale_write_dcsr(target
, -1, -1);
3397 command_print(cmd_ctx
, "vector catch mask: 0x%2.2x", xscale
->vector_catch
);
3403 int xscale_handle_trace_buffer_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
3405 target_t
*target
= get_current_target(cmd_ctx
);
3406 armv4_5_common_t
*armv4_5
;
3407 xscale_common_t
*xscale
;
3410 if (xscale_get_arch_pointers(target
, &armv4_5
, &xscale
) != ERROR_OK
)
3415 if (target
->state
!= TARGET_HALTED
)
3417 command_print(cmd_ctx
, "target must be stopped for \"%s\" command", cmd
);
3421 if ((argc
>= 1) && (strcmp("enable", args
[0]) == 0))
3423 xscale_trace_data_t
*td
, *next_td
;
3424 xscale
->trace
.buffer_enabled
= 1;
3426 /* free old trace data */
3427 td
= xscale
->trace
.data
;
3437 xscale
->trace
.data
= NULL
;
3439 else if ((argc
>= 1) && (strcmp("disable", args
[0]) == 0))
3441 xscale
->trace
.buffer_enabled
= 0;
3444 if ((argc
>= 2) && (strcmp("fill", args
[1]) == 0))
3447 xscale
->trace
.buffer_fill
= strtoul(args
[2], NULL
, 0);
3449 xscale
->trace
.buffer_fill
= 1;
3451 else if ((argc
>= 2) && (strcmp("wrap", args
[1]) == 0))
3453 xscale
->trace
.buffer_fill
= -1;
3456 if (xscale
->trace
.buffer_enabled
)
3458 /* if we enable the trace buffer in fill-once
3459 * mode we know the address of the first instruction */
3460 xscale
->trace
.pc_ok
= 1;
3461 xscale
->trace
.current_pc
= buf_get_u32(armv4_5
->core_cache
->reg_list
[15].value
, 0, 32);
3465 /* otherwise the address is unknown, and we have no known good PC */
3466 xscale
->trace
.pc_ok
= 0;
3469 command_print(cmd_ctx
, "trace buffer %s (%s)",
3470 (xscale
->trace
.buffer_enabled
) ? "enabled" : "disabled",
3471 (xscale
->trace
.buffer_fill
> 0) ? "fill" : "wrap");
3473 dcsr_value
= buf_get_u32(xscale
->reg_cache
->reg_list
[XSCALE_DCSR
].value
, 0, 32);
3474 if (xscale
->trace
.buffer_fill
>= 0)
3475 xscale_write_dcsr_sw(target
, (dcsr_value
& 0xfffffffc) | 2);
3477 xscale_write_dcsr_sw(target
, dcsr_value
& 0xfffffffc);
3482 int xscale_handle_trace_image_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
3485 armv4_5_common_t
*armv4_5
;
3486 xscale_common_t
*xscale
;
3490 command_print(cmd_ctx
, "usage: xscale trace_image <file> [base address] [type]");
3494 target
= get_current_target(cmd_ctx
);
3496 if (xscale_get_arch_pointers(target
, &armv4_5
, &xscale
) != ERROR_OK
)
3501 if (xscale
->trace
.image
)
3503 image_close(xscale
->trace
.image
);
3504 free(xscale
->trace
.image
);
3505 command_print(cmd_ctx
, "previously loaded image found and closed");
3508 xscale
->trace
.image
= malloc(sizeof(image_t
));
3509 xscale
->trace
.image
->base_address_set
= 0;
3510 xscale
->trace
.image
->start_address_set
= 0;
3512 /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
3515 xscale
->trace
.image
->base_address_set
= 1;
3516 xscale
->trace
.image
->base_address
= strtoul(args
[1], NULL
, 0);
3520 xscale
->trace
.image
->base_address_set
= 0;
3523 if (image_open(xscale
->trace
.image
, args
[0], (argc
>= 3) ? args
[2] : NULL
) != ERROR_OK
)
3525 free(xscale
->trace
.image
);
3526 xscale
->trace
.image
= NULL
;
3533 int xscale_handle_dump_trace_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
3535 target_t
*target
= get_current_target(cmd_ctx
);
3536 armv4_5_common_t
*armv4_5
;
3537 xscale_common_t
*xscale
;
3538 xscale_trace_data_t
*trace_data
;
3541 if (xscale_get_arch_pointers(target
, &armv4_5
, &xscale
) != ERROR_OK
)
3546 if (target
->state
!= TARGET_HALTED
)
3548 command_print(cmd_ctx
, "target must be stopped for \"%s\" command", cmd
);
3554 command_print(cmd_ctx
, "usage: xscale dump_trace <file>");
3558 trace_data
= xscale
->trace
.data
;
3562 command_print(cmd_ctx
, "no trace data collected");
3566 if (fileio_open(&file
, args
[0], FILEIO_WRITE
, FILEIO_BINARY
) != ERROR_OK
)
3575 fileio_write_u32(&file
, trace_data
->chkpt0
);
3576 fileio_write_u32(&file
, trace_data
->chkpt1
);
3577 fileio_write_u32(&file
, trace_data
->last_instruction
);
3578 fileio_write_u32(&file
, trace_data
->depth
);
3580 for (i
= 0; i
< trace_data
->depth
; i
++)
3581 fileio_write_u32(&file
, trace_data
->entries
[i
].data
| ((trace_data
->entries
[i
].type
& 0xffff) << 16));
3583 trace_data
= trace_data
->next
;
3586 fileio_close(&file
);
3591 int xscale_handle_analyze_trace_buffer_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
3593 target_t
*target
= get_current_target(cmd_ctx
);
3594 armv4_5_common_t
*armv4_5
;
3595 xscale_common_t
*xscale
;
3597 if (xscale_get_arch_pointers(target
, &armv4_5
, &xscale
) != ERROR_OK
)
3602 xscale_analyze_trace(target
, cmd_ctx
);
3607 int xscale_handle_cp15(command_context_t
*cmd_ctx
, char *cmd
, char **args
, int argc
)
3609 target_t
*target
= get_current_target(cmd_ctx
);
3610 armv4_5_common_t
*armv4_5
;
3611 xscale_common_t
*xscale
;
3613 if (xscale_get_arch_pointers(target
, &armv4_5
, &xscale
) != ERROR_OK
)
3618 if (target
->state
!= TARGET_HALTED
)
3620 command_print(cmd_ctx
, "target must be stopped for \"%s\" command", cmd
);
3627 reg_no
= strtoul(args
[0], NULL
, 0);
3628 /*translate from xscale cp15 register no to openocd register*/
3632 reg_no
= XSCALE_MAINID
;
3635 reg_no
= XSCALE_CTRL
;
3638 reg_no
= XSCALE_TTB
;
3641 reg_no
= XSCALE_DAC
;
3644 reg_no
= XSCALE_FSR
;
3647 reg_no
= XSCALE_FAR
;
3650 reg_no
= XSCALE_PID
;
3653 reg_no
= XSCALE_CPACCESS
;
3656 command_print(cmd_ctx
, "invalid register number");
3657 return ERROR_INVALID_ARGUMENTS
;
3659 reg
= &xscale
->reg_cache
->reg_list
[reg_no
];
3666 /* read cp15 control register */
3667 xscale_get_reg(reg
);
3668 value
= buf_get_u32(reg
->value
, 0, 32);
3669 command_print(cmd_ctx
, "%s (/%i): 0x%x", reg
->name
, reg
->size
, value
);
3674 u32 value
= strtoul(args
[1], NULL
, 0);
3676 /* send CP write request (command 0x41) */
3677 xscale_send_u32(target
, 0x41);
3679 /* send CP register number */
3680 xscale_send_u32(target
, reg_no
);
3682 /* send CP register value */
3683 xscale_send_u32(target
, value
);
3685 /* execute cpwait to ensure outstanding operations complete */
3686 xscale_send_u32(target
, 0x53);
3690 command_print(cmd_ctx
, "usage: cp15 [register]<, [value]>");
3696 int xscale_register_commands(struct command_context_s
*cmd_ctx
)
3698 command_t
*xscale_cmd
;
3700 xscale_cmd
= register_command(cmd_ctx
, NULL
, "xscale", NULL
, COMMAND_ANY
, "xscale specific commands");
3702 register_command(cmd_ctx
, xscale_cmd
, "debug_handler", xscale_handle_debug_handler_command
, COMMAND_ANY
, "'xscale debug_handler <target#> <address>' command takes two required operands");
3703 register_command(cmd_ctx
, xscale_cmd
, "cache_clean_address", xscale_handle_cache_clean_address_command
, COMMAND_ANY
, NULL
);
3705 register_command(cmd_ctx
, xscale_cmd
, "cache_info", xscale_handle_cache_info_command
, COMMAND_EXEC
, NULL
);
3706 register_command(cmd_ctx
, xscale_cmd
, "mmu", xscale_handle_mmu_command
, COMMAND_EXEC
, "['enable'|'disable'] the MMU");
3707 register_command(cmd_ctx
, xscale_cmd
, "icache", xscale_handle_idcache_command
, COMMAND_EXEC
, "['enable'|'disable'] the ICache");
3708 register_command(cmd_ctx
, xscale_cmd
, "dcache", xscale_handle_idcache_command
, COMMAND_EXEC
, "['enable'|'disable'] the DCache");
3710 register_command(cmd_ctx
, xscale_cmd
, "vector_catch", xscale_handle_vector_catch_command
, COMMAND_EXEC
, "<mask> of vectors that should be catched");
3712 register_command(cmd_ctx
, xscale_cmd
, "trace_buffer", xscale_handle_trace_buffer_command
, COMMAND_EXEC
, "<enable|disable> ['fill' [n]|'wrap']");
3714 register_command(cmd_ctx
, xscale_cmd
, "dump_trace", xscale_handle_dump_trace_command
, COMMAND_EXEC
, "dump content of trace buffer to <file>");
3715 register_command(cmd_ctx
, xscale_cmd
, "analyze_trace", xscale_handle_analyze_trace_buffer_command
, COMMAND_EXEC
, "analyze content of trace buffer");
3716 register_command(cmd_ctx
, xscale_cmd
, "trace_image", xscale_handle_trace_image_command
,
3717 COMMAND_EXEC
, "load image from <file> [base address]");
3719 register_command(cmd_ctx
, xscale_cmd
, "cp15", xscale_handle_cp15
, COMMAND_EXEC
, "access coproc 15 <register> [value]");
3721 armv4_5_register_commands(cmd_ctx
);