1 /***************************************************************************
2 * Copyright (C) 2006 by Magnus Lundin *
5 * Copyright (C) 2008 by Spencer Oliver *
6 * spen@spen-soft.co.uk *
8 * Copyright (C) 2009 by Oyvind Harboe *
9 * oyvind.harboe@zylin.com *
11 * Copyright (C) 2009-2010 by David Brownell *
13 * This program is free software; you can redistribute it and/or modify *
14 * it under the terms of the GNU General Public License as published by *
15 * the Free Software Foundation; either version 2 of the License, or *
16 * (at your option) any later version. *
18 * This program is distributed in the hope that it will be useful, *
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
21 * GNU General Public License for more details. *
23 * You should have received a copy of the GNU General Public License *
24 * along with this program; if not, write to the *
25 * Free Software Foundation, Inc., *
26 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
27 ***************************************************************************/
31 * This file implements support for the ARM Debug Interface version 5 (ADIv5)
32 * debugging architecture. Compared with previous versions, this includes
33 * a low pin-count Serial Wire Debug (SWD) alternative to JTAG for message
34 * transport, and focusses on memory mapped resources as defined by the
35 * CoreSight architecture.
37 * A key concept in ADIv5 is the Debug Access Port, or DAP. A DAP has two
38 * basic components: a Debug Port (DP) transporting messages to and from a
39 * debugger, and an Access Port (AP) accessing resources. Three types of DP
40 * are defined. One uses only JTAG for communication, and is called JTAG-DP.
41 * One uses only SWD for communication, and is called SW-DP. The third can
42 * use either SWD or JTAG, and is called SWJ-DP. The most common type of AP
43 * is used to access memory mapped resources and is called a MEM-AP. Also a
44 * JTAG-AP is also defined, bridging to JTAG resources; those are uncommon.
46 * @todo Remove modality (queued/nonqueued, via DAP trans_mode) from all
47 * procedure interfaces. Modal programming interfaces are very error prone.
48 * Procedures should be either queued, or synchronous. Otherwise input
49 * and output constraints are context-sensitive, and it's hard to know
50 * what a block of code will do just by reading it.
54 * Relevant specifications from ARM include:
56 * ARM(tm) Debug Interface v5 Architecture Specification ARM IHI 0031A
57 * CoreSight(tm) v1.0 Architecture Specification ARM IHI 0029B
59 * CoreSight(tm) DAP-Lite TRM, ARM DDI 0316D
60 * Cortex-M3(tm) TRM, ARM DDI 0337G
67 #include "arm_adi_v5.h"
68 #include <helper/time_support.h>
72 * swjdp->trans_mode = TRANS_MODE_COMPOSITE;
73 * Uses Overrun checking mode and does not do actual JTAG send/receive or transaction
74 * result checking until swjdp_end_transaction()
75 * This must be done before using or deallocating any return variables.
76 * swjdp->trans_mode == TRANS_MODE_ATOMIC
77 * All reads and writes to the AHB bus are checked for valid completion, and return values
78 * are immediatley available.
82 /* ARM ADI Specification requires at least 10 bits used for TAR autoincrement */
85 uint32_t tar_block_size(uint32_t address)
86 Return the largest block starting at address that does not cross a tar block size alignment boundary
88 static uint32_t max_tar_block_size(uint32_t tar_autoincr_block
, uint32_t address
)
90 return (tar_autoincr_block
- ((tar_autoincr_block
- 1) & address
)) >> 2;
93 /***************************************************************************
95 * DPACC and APACC scanchain access through JTAG-DP *
97 ***************************************************************************/
100 * Scan DPACC or APACC using target ordered uint8_t buffers. No endianness
101 * conversions are performed. See section 4.4.3 of the ADIv5 spec, which
102 * discusses operations which access these registers.
104 * Note that only one scan is performed. If RnW is set, a separate scan
105 * will be needed to collect the data which was read; the "invalue" collects
106 * the posted result of a preceding operation, not the current one.
108 * @param swjdp the DAP
109 * @param instr JTAG_DP_APACC (AP access) or JTAG_DP_DPACC (DP access)
110 * @param reg_addr two significant bits; A[3:2]; for APACC access, the
111 * SELECT register has more addressing bits.
112 * @param RnW false iff outvalue will be written to the DP or AP
113 * @param outvalue points to a 32-bit (little-endian) integer
114 * @param invalue NULL, or points to a 32-bit (little-endian) integer
115 * @param ack points to where the three bit JTAG_ACK_* code will be stored
117 static int adi_jtag_dp_scan(struct swjdp_common
*swjdp
,
118 uint8_t instr
, uint8_t reg_addr
, uint8_t RnW
,
119 uint8_t *outvalue
, uint8_t *invalue
, uint8_t *ack
)
121 struct arm_jtag
*jtag_info
= swjdp
->jtag_info
;
122 struct scan_field fields
[2];
123 uint8_t out_addr_buf
;
125 jtag_set_end_state(TAP_IDLE
);
126 arm_jtag_set_instr(jtag_info
, instr
, NULL
);
128 /* Add specified number of tck clocks before accessing memory bus */
130 /* REVISIT these TCK cycles should be *AFTER* updating APACC, since
131 * they provide more time for the (MEM) AP to complete the read ...
132 * See "Minimum Response Time" for JTAG-DP, in the ADIv5 spec.
134 if ((instr
== JTAG_DP_APACC
)
135 && ((reg_addr
== AP_REG_DRW
)
136 || ((reg_addr
& 0xF0) == AP_REG_BD0
))
137 && (swjdp
->memaccess_tck
!= 0))
138 jtag_add_runtest(swjdp
->memaccess_tck
, jtag_set_end_state(TAP_IDLE
));
140 /* Scan out a read or write operation using some DP or AP register.
141 * For APACC access with any sticky error flag set, this is discarded.
143 fields
[0].tap
= jtag_info
->tap
;
144 fields
[0].num_bits
= 3;
145 buf_set_u32(&out_addr_buf
, 0, 3, ((reg_addr
>> 1) & 0x6) | (RnW
& 0x1));
146 fields
[0].out_value
= &out_addr_buf
;
147 fields
[0].in_value
= ack
;
149 /* NOTE: if we receive JTAG_ACK_WAIT, the previous operation did not
150 * complete; data we write is discarded, data we read is unpredictable.
151 * When overrun detect is active, STICKYORUN is set.
154 fields
[1].tap
= jtag_info
->tap
;
155 fields
[1].num_bits
= 32;
156 fields
[1].out_value
= outvalue
;
157 fields
[1].in_value
= invalue
;
159 jtag_add_dr_scan(2, fields
, jtag_get_end_state());
164 /* Scan out and in from host ordered uint32_t variables */
165 static int adi_jtag_dp_scan_u32(struct swjdp_common
*swjdp
,
166 uint8_t instr
, uint8_t reg_addr
, uint8_t RnW
,
167 uint32_t outvalue
, uint32_t *invalue
, uint8_t *ack
)
169 struct arm_jtag
*jtag_info
= swjdp
->jtag_info
;
170 struct scan_field fields
[2];
171 uint8_t out_value_buf
[4];
172 uint8_t out_addr_buf
;
174 jtag_set_end_state(TAP_IDLE
);
175 arm_jtag_set_instr(jtag_info
, instr
, NULL
);
177 /* Add specified number of tck clocks before accessing memory bus */
179 /* REVISIT these TCK cycles should be *AFTER* updating APACC, since
180 * they provide more time for the (MEM) AP to complete the read ...
182 if ((instr
== JTAG_DP_APACC
)
183 && ((reg_addr
== AP_REG_DRW
)
184 || ((reg_addr
& 0xF0) == AP_REG_BD0
))
185 && (swjdp
->memaccess_tck
!= 0))
186 jtag_add_runtest(swjdp
->memaccess_tck
, jtag_set_end_state(TAP_IDLE
));
188 fields
[0].tap
= jtag_info
->tap
;
189 fields
[0].num_bits
= 3;
190 buf_set_u32(&out_addr_buf
, 0, 3, ((reg_addr
>> 1) & 0x6) | (RnW
& 0x1));
191 fields
[0].out_value
= &out_addr_buf
;
192 fields
[0].in_value
= ack
;
194 fields
[1].tap
= jtag_info
->tap
;
195 fields
[1].num_bits
= 32;
196 buf_set_u32(out_value_buf
, 0, 32, outvalue
);
197 fields
[1].out_value
= out_value_buf
;
198 fields
[1].in_value
= NULL
;
202 fields
[1].in_value
= (uint8_t *)invalue
;
203 jtag_add_dr_scan(2, fields
, jtag_get_end_state());
205 jtag_add_callback(arm_le_to_h_u32
, (jtag_callback_data_t
) invalue
);
209 jtag_add_dr_scan(2, fields
, jtag_get_end_state());
215 /* scan_inout_check adds one extra inscan for DPAP_READ commands to read variables */
216 static int scan_inout_check(struct swjdp_common
*swjdp
,
217 uint8_t instr
, uint8_t reg_addr
, uint8_t RnW
,
218 uint8_t *outvalue
, uint8_t *invalue
)
220 adi_jtag_dp_scan(swjdp
, instr
, reg_addr
, RnW
, outvalue
, NULL
, NULL
);
222 if ((RnW
== DPAP_READ
) && (invalue
!= NULL
))
223 adi_jtag_dp_scan(swjdp
, JTAG_DP_DPACC
,
224 DP_RDBUFF
, DPAP_READ
, 0, invalue
, &swjdp
->ack
);
226 /* In TRANS_MODE_ATOMIC all JTAG_DP_APACC transactions wait for
227 * ack = OK/FAULT and the check CTRL_STAT
229 if ((instr
== JTAG_DP_APACC
)
230 && (swjdp
->trans_mode
== TRANS_MODE_ATOMIC
))
231 return jtagdp_transaction_endcheck(swjdp
);
236 static int scan_inout_check_u32(struct swjdp_common
*swjdp
,
237 uint8_t instr
, uint8_t reg_addr
, uint8_t RnW
,
238 uint32_t outvalue
, uint32_t *invalue
)
240 /* Issue the read or write */
241 adi_jtag_dp_scan_u32(swjdp
, instr
, reg_addr
, RnW
, outvalue
, NULL
, NULL
);
243 /* For reads, collect posted value; RDBUFF has no other effect.
244 * Assumes read gets acked with OK/FAULT, and CTRL_STAT says "OK".
246 if ((RnW
== DPAP_READ
) && (invalue
!= NULL
))
247 adi_jtag_dp_scan_u32(swjdp
, JTAG_DP_DPACC
,
248 DP_RDBUFF
, DPAP_READ
, 0, invalue
, &swjdp
->ack
);
250 /* In TRANS_MODE_ATOMIC all JTAG_DP_APACC transactions wait for
251 * ack = OK/FAULT and then check CTRL_STAT
253 if ((instr
== JTAG_DP_APACC
)
254 && (swjdp
->trans_mode
== TRANS_MODE_ATOMIC
))
255 return jtagdp_transaction_endcheck(swjdp
);
260 int jtagdp_transaction_endcheck(struct swjdp_common
*swjdp
)
265 /* too expensive to call keep_alive() here */
268 /* Danger!!!! BROKEN!!!! */
269 scan_inout_check_u32(swjdp
, JTAG_DP_DPACC
,
270 DP_CTRL_STAT
, DPAP_READ
, 0, &ctrlstat
);
271 /* Danger!!!! BROKEN!!!! Why will jtag_execute_queue() fail here????
272 R956 introduced the check on return value here and now Michael Schwingen reports
273 that this code no longer works....
275 https://lists.berlios.de/pipermail/openocd-development/2008-September/003107.html
277 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
279 LOG_ERROR("BUG: Why does this fail the first time????");
281 /* Why??? second time it works??? */
284 /* Post CTRL/STAT read; discard any previous posted read value
285 * but collect its ACK status.
287 scan_inout_check_u32(swjdp
, JTAG_DP_DPACC
,
288 DP_CTRL_STAT
, DPAP_READ
, 0, &ctrlstat
);
289 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
292 swjdp
->ack
= swjdp
->ack
& 0x7;
294 /* common code path avoids calling timeval_ms() */
295 if (swjdp
->ack
!= JTAG_ACK_OK_FAULT
)
297 long long then
= timeval_ms();
299 while (swjdp
->ack
!= JTAG_ACK_OK_FAULT
)
301 if (swjdp
->ack
== JTAG_ACK_WAIT
)
303 if ((timeval_ms()-then
) > 1000)
305 /* NOTE: this would be a good spot
306 * to use JTAG_DP_ABORT.
308 LOG_WARNING("Timeout (1000ms) waiting "
310 "in JTAG-DP transaction");
311 return ERROR_JTAG_DEVICE_ERROR
;
316 LOG_WARNING("Invalid ACK %#x "
317 "in JTAG-DP transaction",
319 return ERROR_JTAG_DEVICE_ERROR
;
322 scan_inout_check_u32(swjdp
, JTAG_DP_DPACC
,
323 DP_CTRL_STAT
, DPAP_READ
, 0, &ctrlstat
);
324 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
326 swjdp
->ack
= swjdp
->ack
& 0x7;
330 /* REVISIT also STICKYCMP, for pushed comparisons (nyet used) */
332 /* Check for STICKYERR and STICKYORUN */
333 if (ctrlstat
& (SSTICKYORUN
| SSTICKYERR
))
335 LOG_DEBUG("jtag-dp: CTRL/STAT error, 0x%" PRIx32
, ctrlstat
);
336 /* Check power to debug regions */
337 if ((ctrlstat
& 0xf0000000) != 0xf0000000)
338 ahbap_debugport_init(swjdp
);
341 uint32_t mem_ap_csw
, mem_ap_tar
;
343 /* Maybe print information about last intended
344 * MEM-AP access; but not if autoincrementing.
345 * *Real* CSW and TAR values are always shown.
347 if (swjdp
->ap_tar_value
!= (uint32_t) -1)
348 LOG_DEBUG("MEM-AP Cached values: "
350 ", ap_csw 0x%" PRIx32
351 ", ap_tar 0x%" PRIx32
,
352 swjdp
->ap_bank_value
,
354 swjdp
->ap_tar_value
);
356 if (ctrlstat
& SSTICKYORUN
)
357 LOG_ERROR("JTAG-DP OVERRUN - check clock, "
358 "memaccess, or reduce jtag speed");
360 if (ctrlstat
& SSTICKYERR
)
361 LOG_ERROR("JTAG-DP STICKY ERROR");
363 /* Clear Sticky Error Bits */
364 scan_inout_check_u32(swjdp
, JTAG_DP_DPACC
,
365 DP_CTRL_STAT
, DPAP_WRITE
,
366 swjdp
->dp_ctrl_stat
| SSTICKYORUN
368 scan_inout_check_u32(swjdp
, JTAG_DP_DPACC
,
369 DP_CTRL_STAT
, DPAP_READ
, 0, &ctrlstat
);
370 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
373 LOG_DEBUG("jtag-dp: CTRL/STAT 0x%" PRIx32
, ctrlstat
);
375 dap_ap_read_reg_u32(swjdp
, AP_REG_CSW
, &mem_ap_csw
);
376 dap_ap_read_reg_u32(swjdp
, AP_REG_TAR
, &mem_ap_tar
);
377 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
379 LOG_ERROR("MEM_AP_CSW 0x%" PRIx32
", MEM_AP_TAR 0x%"
380 PRIx32
, mem_ap_csw
, mem_ap_tar
);
383 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
385 return ERROR_JTAG_DEVICE_ERROR
;
391 /***************************************************************************
393 * DP and MEM-AP register access through APACC and DPACC *
395 ***************************************************************************/
397 static int dap_dp_write_reg(struct swjdp_common
*swjdp
,
398 uint32_t value
, uint8_t reg_addr
)
400 return scan_inout_check_u32(swjdp
, JTAG_DP_DPACC
,
401 reg_addr
, DPAP_WRITE
, value
, NULL
);
404 static int dap_dp_read_reg(struct swjdp_common
*swjdp
,
405 uint32_t *value
, uint8_t reg_addr
)
407 return scan_inout_check_u32(swjdp
, JTAG_DP_DPACC
,
408 reg_addr
, DPAP_READ
, 0, value
);
412 * Select one of the APs connected to the specified DAP. The
413 * selection is implicitly used with future AP transactions.
414 * This is a NOP if the specified AP is already selected.
416 * @param swjdp The DAP
417 * @param apsel Number of the AP to (implicitly) use with further
418 * transactions. This normally identifies a MEM-AP.
420 void dap_ap_select(struct swjdp_common
*swjdp
,uint8_t apsel
)
422 uint32_t select
= (apsel
<< 24) & 0xFF000000;
424 if (select
!= swjdp
->apsel
)
426 swjdp
->apsel
= select
;
427 /* Switching AP invalidates cached values.
428 * Values MUST BE UPDATED BEFORE AP ACCESS.
430 swjdp
->ap_bank_value
= -1;
431 swjdp
->ap_csw_value
= -1;
432 swjdp
->ap_tar_value
= -1;
436 /** Select the AP register bank matching bits 7:4 of ap_reg. */
437 static int dap_ap_bankselect(struct swjdp_common
*swjdp
, uint32_t ap_reg
)
439 uint32_t select
= (ap_reg
& 0x000000F0);
441 if (select
!= swjdp
->ap_bank_value
)
443 swjdp
->ap_bank_value
= select
;
444 select
|= swjdp
->apsel
;
445 return dap_dp_write_reg(swjdp
, select
, DP_SELECT
);
450 static int dap_ap_write_reg(struct swjdp_common
*swjdp
,
451 uint32_t reg_addr
, uint8_t *out_value_buf
)
453 dap_ap_bankselect(swjdp
, reg_addr
);
454 scan_inout_check(swjdp
, JTAG_DP_APACC
, reg_addr
,
455 DPAP_WRITE
, out_value_buf
, NULL
);
457 /* FIXME return fault code from above calls */
462 * Write an AP register value.
463 * This is synchronous iff the mode is set to ATOMIC, in which
464 * case any queued transactions are flushed.
466 * @param swjdp The DAP whose currently selected AP will be written.
467 * @param reg_addr Eight bit AP register address.
468 * @param value Word to be written at reg_addr
470 * @return In synchronous mode: ERROR_OK for success, and the register holds
471 * the specified value; else a fault code. In asynchronous mode, a status
472 * code reflecting whether the transaction was properly queued.
474 int dap_ap_write_reg_u32(struct swjdp_common
*swjdp
,
475 uint32_t reg_addr
, uint32_t value
)
477 uint8_t out_value_buf
[4];
479 buf_set_u32(out_value_buf
, 0, 32, value
);
480 dap_ap_bankselect(swjdp
, reg_addr
);
481 scan_inout_check(swjdp
, JTAG_DP_APACC
, reg_addr
,
482 DPAP_WRITE
, out_value_buf
, NULL
);
484 /* FIXME return any fault code from above calls */
489 * Read an AP register value.
490 * This is synchronous iff the mode is set to ATOMIC, in which
491 * case any queued transactions are flushed.
493 * @param swjdp The DAP whose currently selected AP will be read.
494 * @param reg_addr Eight bit AP register address.
495 * @param value Points to where the 32-bit (little-endian) word will be stored.
497 * @return In synchronous mode: ERROR_OK for success, and *value holds
498 * the specified value; else a fault code. In asynchronous mode, a status
499 * code reflecting whether the transaction was properly queued.
501 int dap_ap_read_reg_u32(struct swjdp_common
*swjdp
,
502 uint32_t reg_addr
, uint32_t *value
)
504 dap_ap_bankselect(swjdp
, reg_addr
);
505 scan_inout_check_u32(swjdp
, JTAG_DP_APACC
, reg_addr
,
506 DPAP_READ
, 0, value
);
508 /* FIXME return any fault code from above calls */
513 * Set up transfer parameters for the currently selected MEM-AP.
514 * This is synchronous iff the mode is set to ATOMIC, in which
515 * case any queued transactions are flushed.
517 * Subsequent transfers using registers like AP_REG_DRW or AP_REG_BD2
518 * initiate data reads or writes using memory or peripheral addresses.
519 * If the CSW is configured for it, the TAR may be automatically
520 * incremented after each transfer.
522 * @todo Rename to reflect it being specifically a MEM-AP function.
524 * @param swjdp The DAP connected to the MEM-AP.
525 * @param csw MEM-AP Control/Status Word (CSW) register to assign. If this
526 * matches the cached value, the register is not changed.
527 * @param tar MEM-AP Transfer Address Register (TAR) to assign. If this
528 * matches the cached address, the register is not changed.
530 * @return In synchronous mode: ERROR_OK for success, and the AP is set
531 * up as requested else a fault code. In asynchronous mode, a status
532 * code reflecting whether the transaction was properly queued.
534 int dap_setup_accessport(struct swjdp_common
*swjdp
, uint32_t csw
, uint32_t tar
)
536 csw
= csw
| CSW_DBGSWENABLE
| CSW_MASTER_DEBUG
| CSW_HPROT
;
537 if (csw
!= swjdp
->ap_csw_value
)
539 /* LOG_DEBUG("DAP: Set CSW %x",csw); */
540 /* FIXME if this call fails, fail this procedure! */
541 dap_ap_write_reg_u32(swjdp
, AP_REG_CSW
, csw
);
542 swjdp
->ap_csw_value
= csw
;
544 if (tar
!= swjdp
->ap_tar_value
)
546 /* LOG_DEBUG("DAP: Set TAR %x",tar); */
547 /* FIXME if this call fails, fail this procedure! */
548 dap_ap_write_reg_u32(swjdp
, AP_REG_TAR
, tar
);
549 swjdp
->ap_tar_value
= tar
;
551 /* Disable TAR cache when autoincrementing */
552 if (csw
& CSW_ADDRINC_MASK
)
553 swjdp
->ap_tar_value
= -1;
558 * Asynchronous (queued) read of a word from memory or a system register.
560 * @param swjdp The DAP connected to the MEM-AP performing the read.
561 * @param address Address of the 32-bit word to read; it must be
562 * readable by the currently selected MEM-AP.
563 * @param value points to where the word will be stored when the
564 * transaction queue is flushed (assuming no errors).
566 * @return ERROR_OK for success. Otherwise a fault code.
568 int mem_ap_read_u32(struct swjdp_common
*swjdp
, uint32_t address
,
571 swjdp
->trans_mode
= TRANS_MODE_COMPOSITE
;
573 /* Use banked addressing (REG_BDx) to avoid some link traffic
574 * (updating TAR) when reading several consecutive addresses.
576 dap_setup_accessport(swjdp
, CSW_32BIT
| CSW_ADDRINC_OFF
,
577 address
& 0xFFFFFFF0);
578 dap_ap_read_reg_u32(swjdp
, AP_REG_BD0
| (address
& 0xC), value
);
580 /* FIXME return any fault code from above calls */
585 * Synchronous read of a word from memory or a system register.
586 * As a side effect, this flushes any queued transactions.
588 * @param swjdp The DAP connected to the MEM-AP performing the read.
589 * @param address Address of the 32-bit word to read; it must be
590 * readable by the currently selected MEM-AP.
591 * @param value points to where the result will be stored.
593 * @return ERROR_OK for success; *value holds the result.
594 * Otherwise a fault code.
596 int mem_ap_read_atomic_u32(struct swjdp_common
*swjdp
, uint32_t address
,
599 mem_ap_read_u32(swjdp
, address
, value
);
600 /* FIXME return any fault code from above call */
602 return jtagdp_transaction_endcheck(swjdp
);
606 * Asynchronous (queued) write of a word to memory or a system register.
608 * @param swjdp The DAP connected to the MEM-AP.
609 * @param address Address to be written; it must be writable by
610 * the currently selected MEM-AP.
611 * @param value Word that will be written to the address when transaction
612 * queue is flushed (assuming no errors).
614 * @return ERROR_OK for success. Otherwise a fault code.
616 int mem_ap_write_u32(struct swjdp_common
*swjdp
, uint32_t address
,
619 swjdp
->trans_mode
= TRANS_MODE_COMPOSITE
;
621 /* Use banked addressing (REG_BDx) to avoid some link traffic
622 * (updating TAR) when writing several consecutive addresses.
624 dap_setup_accessport(swjdp
, CSW_32BIT
| CSW_ADDRINC_OFF
,
625 address
& 0xFFFFFFF0);
626 dap_ap_write_reg_u32(swjdp
, AP_REG_BD0
| (address
& 0xC), value
);
628 /* FIXME return any fault code from above calls */
633 * Synchronous write of a word to memory or a system register.
634 * As a side effect, this flushes any queued transactions.
636 * @param swjdp The DAP connected to the MEM-AP.
637 * @param address Address to be written; it must be writable by
638 * the currently selected MEM-AP.
639 * @param value Word that will be written.
641 * @return ERROR_OK for success; the data was written. Otherwise a fault code.
643 int mem_ap_write_atomic_u32(struct swjdp_common
*swjdp
, uint32_t address
,
646 mem_ap_write_u32(swjdp
, address
, value
);
647 /* FIXME return any fault code from above call */
649 return jtagdp_transaction_endcheck(swjdp
);
652 /*****************************************************************************
654 * mem_ap_write_buf(struct swjdp_common *swjdp, uint8_t *buffer, int count, uint32_t address) *
656 * Write a buffer in target order (little endian) *
658 *****************************************************************************/
659 int mem_ap_write_buf_u32(struct swjdp_common
*swjdp
, uint8_t *buffer
, int count
, uint32_t address
)
661 int wcount
, blocksize
, writecount
, errorcount
= 0, retval
= ERROR_OK
;
662 uint32_t adr
= address
;
663 uint8_t* pBuffer
= buffer
;
665 swjdp
->trans_mode
= TRANS_MODE_COMPOSITE
;
670 /* if we have an unaligned access - reorder data */
673 for (writecount
= 0; writecount
< count
; writecount
++)
677 memcpy(&outvalue
, pBuffer
, sizeof(uint32_t));
679 for (i
= 0; i
< 4; i
++)
681 *((uint8_t*)pBuffer
+ (adr
& 0x3)) = outvalue
;
685 pBuffer
+= sizeof(uint32_t);
691 /* Adjust to write blocks within boundaries aligned to the TAR autoincremnent size*/
692 blocksize
= max_tar_block_size(swjdp
->tar_autoincr_block
, address
);
693 if (wcount
< blocksize
)
696 /* handle unaligned data at 4k boundary */
700 dap_setup_accessport(swjdp
, CSW_32BIT
| CSW_ADDRINC_SINGLE
, address
);
702 for (writecount
= 0; writecount
< blocksize
; writecount
++)
704 dap_ap_write_reg(swjdp
, AP_REG_DRW
, buffer
+ 4 * writecount
);
707 if (jtagdp_transaction_endcheck(swjdp
) == ERROR_OK
)
709 wcount
= wcount
- blocksize
;
710 address
= address
+ 4 * blocksize
;
711 buffer
= buffer
+ 4 * blocksize
;
720 LOG_WARNING("Block write error address 0x%" PRIx32
", wcount 0x%x", address
, wcount
);
721 return ERROR_JTAG_DEVICE_ERROR
;
728 static int mem_ap_write_buf_packed_u16(struct swjdp_common
*swjdp
,
729 uint8_t *buffer
, int count
, uint32_t address
)
731 int retval
= ERROR_OK
;
732 int wcount
, blocksize
, writecount
, i
;
734 swjdp
->trans_mode
= TRANS_MODE_COMPOSITE
;
742 /* Adjust to write blocks within boundaries aligned to the TAR autoincremnent size*/
743 blocksize
= max_tar_block_size(swjdp
->tar_autoincr_block
, address
);
745 if (wcount
< blocksize
)
748 /* handle unaligned data at 4k boundary */
752 dap_setup_accessport(swjdp
, CSW_16BIT
| CSW_ADDRINC_PACKED
, address
);
753 writecount
= blocksize
;
757 nbytes
= MIN((writecount
<< 1), 4);
761 if (mem_ap_write_buf_u16(swjdp
, buffer
,
762 nbytes
, address
) != ERROR_OK
)
764 LOG_WARNING("Block write error address "
765 "0x%" PRIx32
", count 0x%x",
767 return ERROR_JTAG_DEVICE_ERROR
;
770 address
+= nbytes
>> 1;
775 memcpy(&outvalue
, buffer
, sizeof(uint32_t));
777 for (i
= 0; i
< nbytes
; i
++)
779 *((uint8_t*)buffer
+ (address
& 0x3)) = outvalue
;
784 memcpy(&outvalue
, buffer
, sizeof(uint32_t));
785 dap_ap_write_reg_u32(swjdp
, AP_REG_DRW
, outvalue
);
786 if (jtagdp_transaction_endcheck(swjdp
) != ERROR_OK
)
788 LOG_WARNING("Block write error address "
789 "0x%" PRIx32
", count 0x%x",
791 return ERROR_JTAG_DEVICE_ERROR
;
795 buffer
+= nbytes
>> 1;
796 writecount
-= nbytes
>> 1;
798 } while (writecount
);
805 int mem_ap_write_buf_u16(struct swjdp_common
*swjdp
, uint8_t *buffer
, int count
, uint32_t address
)
807 int retval
= ERROR_OK
;
810 return mem_ap_write_buf_packed_u16(swjdp
, buffer
, count
, address
);
812 swjdp
->trans_mode
= TRANS_MODE_COMPOSITE
;
816 dap_setup_accessport(swjdp
, CSW_16BIT
| CSW_ADDRINC_SINGLE
, address
);
818 memcpy(&svalue
, buffer
, sizeof(uint16_t));
819 uint32_t outvalue
= (uint32_t)svalue
<< 8 * (address
& 0x3);
820 dap_ap_write_reg_u32(swjdp
, AP_REG_DRW
, outvalue
);
821 retval
= jtagdp_transaction_endcheck(swjdp
);
830 static int mem_ap_write_buf_packed_u8(struct swjdp_common
*swjdp
,
831 uint8_t *buffer
, int count
, uint32_t address
)
833 int retval
= ERROR_OK
;
834 int wcount
, blocksize
, writecount
, i
;
836 swjdp
->trans_mode
= TRANS_MODE_COMPOSITE
;
844 /* Adjust to write blocks within boundaries aligned to the TAR autoincremnent size*/
845 blocksize
= max_tar_block_size(swjdp
->tar_autoincr_block
, address
);
847 if (wcount
< blocksize
)
850 dap_setup_accessport(swjdp
, CSW_8BIT
| CSW_ADDRINC_PACKED
, address
);
851 writecount
= blocksize
;
855 nbytes
= MIN(writecount
, 4);
859 if (mem_ap_write_buf_u8(swjdp
, buffer
, nbytes
, address
) != ERROR_OK
)
861 LOG_WARNING("Block write error address "
862 "0x%" PRIx32
", count 0x%x",
864 return ERROR_JTAG_DEVICE_ERROR
;
872 memcpy(&outvalue
, buffer
, sizeof(uint32_t));
874 for (i
= 0; i
< nbytes
; i
++)
876 *((uint8_t*)buffer
+ (address
& 0x3)) = outvalue
;
881 memcpy(&outvalue
, buffer
, sizeof(uint32_t));
882 dap_ap_write_reg_u32(swjdp
, AP_REG_DRW
, outvalue
);
883 if (jtagdp_transaction_endcheck(swjdp
) != ERROR_OK
)
885 LOG_WARNING("Block write error address "
886 "0x%" PRIx32
", count 0x%x",
888 return ERROR_JTAG_DEVICE_ERROR
;
893 writecount
-= nbytes
;
895 } while (writecount
);
902 int mem_ap_write_buf_u8(struct swjdp_common
*swjdp
, uint8_t *buffer
, int count
, uint32_t address
)
904 int retval
= ERROR_OK
;
907 return mem_ap_write_buf_packed_u8(swjdp
, buffer
, count
, address
);
909 swjdp
->trans_mode
= TRANS_MODE_COMPOSITE
;
913 dap_setup_accessport(swjdp
, CSW_8BIT
| CSW_ADDRINC_SINGLE
, address
);
914 uint32_t outvalue
= (uint32_t)*buffer
<< 8 * (address
& 0x3);
915 dap_ap_write_reg_u32(swjdp
, AP_REG_DRW
, outvalue
);
916 retval
= jtagdp_transaction_endcheck(swjdp
);
925 /*********************************************************************************
927 * mem_ap_read_buf_u32(struct swjdp_common *swjdp, uint8_t *buffer, int count, uint32_t address) *
929 * Read block fast in target order (little endian) into a buffer *
931 **********************************************************************************/
932 int mem_ap_read_buf_u32(struct swjdp_common
*swjdp
, uint8_t *buffer
, int count
, uint32_t address
)
934 int wcount
, blocksize
, readcount
, errorcount
= 0, retval
= ERROR_OK
;
935 uint32_t adr
= address
;
936 uint8_t* pBuffer
= buffer
;
938 swjdp
->trans_mode
= TRANS_MODE_COMPOSITE
;
945 /* Adjust to read blocks within boundaries aligned to the TAR autoincremnent size*/
946 blocksize
= max_tar_block_size(swjdp
->tar_autoincr_block
, address
);
947 if (wcount
< blocksize
)
950 /* handle unaligned data at 4k boundary */
954 dap_setup_accessport(swjdp
, CSW_32BIT
| CSW_ADDRINC_SINGLE
, address
);
956 /* Scan out first read */
957 adi_jtag_dp_scan(swjdp
, JTAG_DP_APACC
, AP_REG_DRW
,
958 DPAP_READ
, 0, NULL
, NULL
);
959 for (readcount
= 0; readcount
< blocksize
- 1; readcount
++)
961 /* Scan out next read; scan in posted value for the
962 * previous one. Assumes read is acked "OK/FAULT",
963 * and CTRL_STAT says that meant "OK".
965 adi_jtag_dp_scan(swjdp
, JTAG_DP_APACC
, AP_REG_DRW
,
966 DPAP_READ
, 0, buffer
+ 4 * readcount
,
970 /* Scan in last posted value; RDBUFF has no other effect,
971 * assuming ack is OK/FAULT and CTRL_STAT says "OK".
973 adi_jtag_dp_scan(swjdp
, JTAG_DP_DPACC
, DP_RDBUFF
,
974 DPAP_READ
, 0, buffer
+ 4 * readcount
,
976 if (jtagdp_transaction_endcheck(swjdp
) == ERROR_OK
)
978 wcount
= wcount
- blocksize
;
979 address
+= 4 * blocksize
;
980 buffer
+= 4 * blocksize
;
989 LOG_WARNING("Block read error address 0x%" PRIx32
", count 0x%x", address
, count
);
990 return ERROR_JTAG_DEVICE_ERROR
;
994 /* if we have an unaligned access - reorder data */
997 for (readcount
= 0; readcount
< count
; readcount
++)
1001 memcpy(&data
, pBuffer
, sizeof(uint32_t));
1003 for (i
= 0; i
< 4; i
++)
1005 *((uint8_t*)pBuffer
) = (data
>> 8 * (adr
& 0x3));
1015 static int mem_ap_read_buf_packed_u16(struct swjdp_common
*swjdp
,
1016 uint8_t *buffer
, int count
, uint32_t address
)
1019 int retval
= ERROR_OK
;
1020 int wcount
, blocksize
, readcount
, i
;
1022 swjdp
->trans_mode
= TRANS_MODE_COMPOSITE
;
1024 wcount
= count
>> 1;
1030 /* Adjust to read blocks within boundaries aligned to the TAR autoincremnent size*/
1031 blocksize
= max_tar_block_size(swjdp
->tar_autoincr_block
, address
);
1032 if (wcount
< blocksize
)
1035 dap_setup_accessport(swjdp
, CSW_16BIT
| CSW_ADDRINC_PACKED
, address
);
1037 /* handle unaligned data at 4k boundary */
1040 readcount
= blocksize
;
1044 dap_ap_read_reg_u32(swjdp
, AP_REG_DRW
, &invalue
);
1045 if (jtagdp_transaction_endcheck(swjdp
) != ERROR_OK
)
1047 LOG_WARNING("Block read error address 0x%" PRIx32
", count 0x%x", address
, count
);
1048 return ERROR_JTAG_DEVICE_ERROR
;
1051 nbytes
= MIN((readcount
<< 1), 4);
1053 for (i
= 0; i
< nbytes
; i
++)
1055 *((uint8_t*)buffer
) = (invalue
>> 8 * (address
& 0x3));
1060 readcount
-= (nbytes
>> 1);
1061 } while (readcount
);
1062 wcount
-= blocksize
;
1068 int mem_ap_read_buf_u16(struct swjdp_common
*swjdp
, uint8_t *buffer
, int count
, uint32_t address
)
1070 uint32_t invalue
, i
;
1071 int retval
= ERROR_OK
;
1074 return mem_ap_read_buf_packed_u16(swjdp
, buffer
, count
, address
);
1076 swjdp
->trans_mode
= TRANS_MODE_COMPOSITE
;
1080 dap_setup_accessport(swjdp
, CSW_16BIT
| CSW_ADDRINC_SINGLE
, address
);
1081 dap_ap_read_reg_u32(swjdp
, AP_REG_DRW
, &invalue
);
1082 retval
= jtagdp_transaction_endcheck(swjdp
);
1085 for (i
= 0; i
< 2; i
++)
1087 *((uint8_t*)buffer
) = (invalue
>> 8 * (address
& 0x3));
1094 uint16_t svalue
= (invalue
>> 8 * (address
& 0x3));
1095 memcpy(buffer
, &svalue
, sizeof(uint16_t));
1105 /* FIX!!! is this a potential performance bottleneck w.r.t. requiring too many
1106 * roundtrips when jtag_execute_queue() has a large overhead(e.g. for USB)s?
1108 * The solution is to arrange for a large out/in scan in this loop and
1109 * and convert data afterwards.
1111 static int mem_ap_read_buf_packed_u8(struct swjdp_common
*swjdp
,
1112 uint8_t *buffer
, int count
, uint32_t address
)
1115 int retval
= ERROR_OK
;
1116 int wcount
, blocksize
, readcount
, i
;
1118 swjdp
->trans_mode
= TRANS_MODE_COMPOSITE
;
1126 /* Adjust to read blocks within boundaries aligned to the TAR autoincremnent size*/
1127 blocksize
= max_tar_block_size(swjdp
->tar_autoincr_block
, address
);
1129 if (wcount
< blocksize
)
1132 dap_setup_accessport(swjdp
, CSW_8BIT
| CSW_ADDRINC_PACKED
, address
);
1133 readcount
= blocksize
;
1137 dap_ap_read_reg_u32(swjdp
, AP_REG_DRW
, &invalue
);
1138 if (jtagdp_transaction_endcheck(swjdp
) != ERROR_OK
)
1140 LOG_WARNING("Block read error address 0x%" PRIx32
", count 0x%x", address
, count
);
1141 return ERROR_JTAG_DEVICE_ERROR
;
1144 nbytes
= MIN(readcount
, 4);
1146 for (i
= 0; i
< nbytes
; i
++)
1148 *((uint8_t*)buffer
) = (invalue
>> 8 * (address
& 0x3));
1153 readcount
-= nbytes
;
1154 } while (readcount
);
1155 wcount
-= blocksize
;
1161 int mem_ap_read_buf_u8(struct swjdp_common
*swjdp
, uint8_t *buffer
, int count
, uint32_t address
)
1164 int retval
= ERROR_OK
;
1167 return mem_ap_read_buf_packed_u8(swjdp
, buffer
, count
, address
);
1169 swjdp
->trans_mode
= TRANS_MODE_COMPOSITE
;
1173 dap_setup_accessport(swjdp
, CSW_8BIT
| CSW_ADDRINC_SINGLE
, address
);
1174 dap_ap_read_reg_u32(swjdp
, AP_REG_DRW
, &invalue
);
1175 retval
= jtagdp_transaction_endcheck(swjdp
);
1176 *((uint8_t*)buffer
) = (invalue
>> 8 * (address
& 0x3));
1186 * Initialize a DAP. This sets up the power domains, prepares the DP
1187 * for further use, and arranges to use AP #0 for all AP operations
1188 * until dap_ap-select() changes that policy.
1190 * @param swjdp The DAP being initialized.
1192 * @todo Rename this. We also need an initialization scheme which account
1193 * for SWD transports not just JTAG; that will need to address differences
1194 * in layering. (JTAG is useful without any debug target; but not SWD.)
1195 * And this may not even use an AHB-AP ... e.g. DAP-Lite uses an APB-AP.
1197 int ahbap_debugport_init(struct swjdp_common
*swjdp
)
1199 uint32_t idreg
, romaddr
, dummy
;
1206 /* Default MEM-AP setup.
1208 * REVISIT AP #0 may be an inappropriate default for this.
1209 * Should we probe, or take a hint from the caller?
1210 * Presumably we can ignore the possibility of multiple APs.
1213 dap_ap_select(swjdp
, 0);
1215 /* DP initialization */
1216 swjdp
->trans_mode
= TRANS_MODE_ATOMIC
;
1217 dap_dp_read_reg(swjdp
, &dummy
, DP_CTRL_STAT
);
1218 dap_dp_write_reg(swjdp
, SSTICKYERR
, DP_CTRL_STAT
);
1219 dap_dp_read_reg(swjdp
, &dummy
, DP_CTRL_STAT
);
1221 swjdp
->dp_ctrl_stat
= CDBGPWRUPREQ
| CSYSPWRUPREQ
;
1223 dap_dp_write_reg(swjdp
, swjdp
->dp_ctrl_stat
, DP_CTRL_STAT
);
1224 dap_dp_read_reg(swjdp
, &ctrlstat
, DP_CTRL_STAT
);
1225 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1228 /* Check that we have debug power domains activated */
1229 while (!(ctrlstat
& CDBGPWRUPACK
) && (cnt
++ < 10))
1231 LOG_DEBUG("DAP: wait CDBGPWRUPACK");
1232 dap_dp_read_reg(swjdp
, &ctrlstat
, DP_CTRL_STAT
);
1233 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1238 while (!(ctrlstat
& CSYSPWRUPACK
) && (cnt
++ < 10))
1240 LOG_DEBUG("DAP: wait CSYSPWRUPACK");
1241 dap_dp_read_reg(swjdp
, &ctrlstat
, DP_CTRL_STAT
);
1242 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1247 dap_dp_read_reg(swjdp
, &dummy
, DP_CTRL_STAT
);
1248 /* With debug power on we can activate OVERRUN checking */
1249 swjdp
->dp_ctrl_stat
= CDBGPWRUPREQ
| CSYSPWRUPREQ
| CORUNDETECT
;
1250 dap_dp_write_reg(swjdp
, swjdp
->dp_ctrl_stat
, DP_CTRL_STAT
);
1251 dap_dp_read_reg(swjdp
, &dummy
, DP_CTRL_STAT
);
1254 * REVISIT this isn't actually *initializing* anything in an AP,
1255 * and doesn't care if it's a MEM-AP at all (much less AHB-AP).
1256 * Should it? If the ROM address is valid, is this the right
1257 * place to scan the table and do any topology detection?
1259 dap_ap_read_reg_u32(swjdp
, AP_REG_IDR
, &idreg
);
1260 dap_ap_read_reg_u32(swjdp
, AP_REG_BASE
, &romaddr
);
1262 LOG_DEBUG("MEM-AP #%d ID Register 0x%" PRIx32
1263 ", Debug ROM Address 0x%" PRIx32
,
1264 swjdp
->apsel
, idreg
, romaddr
);
1269 /* CID interpretation -- see ARM IHI 0029B section 3
1270 * and ARM IHI 0031A table 13-3.
1272 static const char *class_description
[16] ={
1273 "Reserved", "ROM table", "Reserved", "Reserved",
1274 "Reserved", "Reserved", "Reserved", "Reserved",
1275 "Reserved", "CoreSight component", "Reserved", "Peripheral Test Block",
1276 "Reserved", "OptimoDE DESS",
1277 "Generic IP component", "PrimeCell or System component"
1281 is_dap_cid_ok(uint32_t cid3
, uint32_t cid2
, uint32_t cid1
, uint32_t cid0
)
1283 return cid3
== 0xb1 && cid2
== 0x05
1284 && ((cid1
& 0x0f) == 0) && cid0
== 0x0d;
1287 int dap_info_command(struct command_context
*cmd_ctx
,
1288 struct swjdp_common
*swjdp
, int apsel
)
1291 uint32_t dbgbase
, apid
;
1292 int romtable_present
= 0;
1296 /* AP address is in bits 31:24 of DP_SELECT */
1298 return ERROR_INVALID_ARGUMENTS
;
1300 apselold
= swjdp
->apsel
;
1301 dap_ap_select(swjdp
, apsel
);
1302 dap_ap_read_reg_u32(swjdp
, AP_REG_BASE
, &dbgbase
);
1303 dap_ap_read_reg_u32(swjdp
, AP_REG_IDR
, &apid
);
1304 jtagdp_transaction_endcheck(swjdp
);
1305 /* Now we read ROM table ID registers, ref. ARM IHI 0029B sec */
1306 mem_ap
= ((apid
&0x10000) && ((apid
&0x0F) != 0));
1307 command_print(cmd_ctx
, "AP ID register 0x%8.8" PRIx32
, apid
);
1313 command_print(cmd_ctx
, "\tType is JTAG-AP");
1316 command_print(cmd_ctx
, "\tType is MEM-AP AHB");
1319 command_print(cmd_ctx
, "\tType is MEM-AP APB");
1322 command_print(cmd_ctx
, "\tUnknown AP type");
1326 /* NOTE: a MEM-AP may have a single CoreSight component that's
1327 * not a ROM table ... or have no such components at all.
1330 command_print(cmd_ctx
, "AP BASE 0x%8.8" PRIx32
,
1335 command_print(cmd_ctx
, "No AP found at this apsel 0x%x", apsel
);
1338 romtable_present
= ((mem_ap
) && (dbgbase
!= 0xFFFFFFFF));
1339 if (romtable_present
)
1341 uint32_t cid0
,cid1
,cid2
,cid3
,memtype
,romentry
;
1342 uint16_t entry_offset
;
1344 /* bit 16 of apid indicates a memory access port */
1346 command_print(cmd_ctx
, "\tValid ROM table present");
1348 command_print(cmd_ctx
, "\tROM table in legacy format");
1350 /* Now we read ROM table ID registers, ref. ARM IHI 0029B sec */
1351 mem_ap_read_u32(swjdp
, (dbgbase
&0xFFFFF000) | 0xFF0, &cid0
);
1352 mem_ap_read_u32(swjdp
, (dbgbase
&0xFFFFF000) | 0xFF4, &cid1
);
1353 mem_ap_read_u32(swjdp
, (dbgbase
&0xFFFFF000) | 0xFF8, &cid2
);
1354 mem_ap_read_u32(swjdp
, (dbgbase
&0xFFFFF000) | 0xFFC, &cid3
);
1355 mem_ap_read_u32(swjdp
, (dbgbase
&0xFFFFF000) | 0xFCC, &memtype
);
1356 jtagdp_transaction_endcheck(swjdp
);
1357 if (!is_dap_cid_ok(cid3
, cid2
, cid1
, cid0
))
1358 command_print(cmd_ctx
, "\tCID3 0x%2.2" PRIx32
1359 ", CID2 0x%2.2" PRIx32
1360 ", CID1 0x%2.2" PRIx32
1361 ", CID0 0x%2.2" PRIx32
,
1362 cid3
, cid2
, cid1
, cid0
);
1364 command_print(cmd_ctx
, "\tMEMTYPE system memory present on bus");
1366 command_print(cmd_ctx
, "\tMEMTYPE System memory not present. "
1367 "Dedicated debug bus.");
1369 /* Now we read ROM table entries from dbgbase&0xFFFFF000) | 0x000 until we get 0x00000000 */
1373 mem_ap_read_atomic_u32(swjdp
, (dbgbase
&0xFFFFF000) | entry_offset
, &romentry
);
1374 command_print(cmd_ctx
, "\tROMTABLE[0x%x] = 0x%" PRIx32
"",entry_offset
,romentry
);
1377 uint32_t c_cid0
, c_cid1
, c_cid2
, c_cid3
;
1378 uint32_t c_pid0
, c_pid1
, c_pid2
, c_pid3
, c_pid4
;
1379 uint32_t component_start
, component_base
;
1383 component_base
= (uint32_t)((dbgbase
& 0xFFFFF000)
1384 + (int)(romentry
& 0xFFFFF000));
1385 mem_ap_read_atomic_u32(swjdp
,
1386 (component_base
& 0xFFFFF000) | 0xFE0, &c_pid0
);
1387 mem_ap_read_atomic_u32(swjdp
,
1388 (component_base
& 0xFFFFF000) | 0xFE4, &c_pid1
);
1389 mem_ap_read_atomic_u32(swjdp
,
1390 (component_base
& 0xFFFFF000) | 0xFE8, &c_pid2
);
1391 mem_ap_read_atomic_u32(swjdp
,
1392 (component_base
& 0xFFFFF000) | 0xFEC, &c_pid3
);
1393 mem_ap_read_atomic_u32(swjdp
,
1394 (component_base
& 0xFFFFF000) | 0xFD0, &c_pid4
);
1395 mem_ap_read_atomic_u32(swjdp
,
1396 (component_base
& 0xFFFFF000) | 0xFF0, &c_cid0
);
1397 mem_ap_read_atomic_u32(swjdp
,
1398 (component_base
& 0xFFFFF000) | 0xFF4, &c_cid1
);
1399 mem_ap_read_atomic_u32(swjdp
,
1400 (component_base
& 0xFFFFF000) | 0xFF8, &c_cid2
);
1401 mem_ap_read_atomic_u32(swjdp
,
1402 (component_base
& 0xFFFFF000) | 0xFFC, &c_cid3
);
1403 component_start
= component_base
- 0x1000*(c_pid4
>> 4);
1405 command_print(cmd_ctx
, "\t\tComponent base address 0x%" PRIx32
1406 ", start address 0x%" PRIx32
,
1407 component_base
, component_start
);
1408 command_print(cmd_ctx
, "\t\tComponent class is 0x%x, %s",
1409 (int) (c_cid1
>> 4) & 0xf,
1410 /* See ARM IHI 0029B Table 3-3 */
1411 class_description
[(c_cid1
>> 4) & 0xf]);
1413 /* CoreSight component? */
1414 if (((c_cid1
>> 4) & 0x0f) == 9) {
1417 char *major
= "Reserved", *subtype
= "Reserved";
1419 mem_ap_read_atomic_u32(swjdp
,
1420 (component_base
& 0xfffff000) | 0xfcc,
1422 minor
= (devtype
>> 4) & 0x0f;
1423 switch (devtype
& 0x0f) {
1425 major
= "Miscellaneous";
1431 subtype
= "Validation component";
1436 major
= "Trace Sink";
1450 major
= "Trace Link";
1456 subtype
= "Funnel, router";
1462 subtype
= "FIFO, buffer";
1467 major
= "Trace Source";
1473 subtype
= "Processor";
1479 subtype
= "Engine/Coprocessor";
1487 major
= "Debug Control";
1493 subtype
= "Trigger Matrix";
1496 subtype
= "Debug Auth";
1501 major
= "Debug Logic";
1507 subtype
= "Processor";
1513 subtype
= "Engine/Coprocessor";
1518 command_print(cmd_ctx
, "\t\tType is 0x%2.2x, %s, %s",
1519 (unsigned) (devtype
& 0xff),
1521 /* REVISIT also show 0xfc8 DevId */
1524 if (!is_dap_cid_ok(cid3
, cid2
, cid1
, cid0
))
1525 command_print(cmd_ctx
, "\t\tCID3 0x%2.2" PRIx32
1526 ", CID2 0x%2.2" PRIx32
1527 ", CID1 0x%2.2" PRIx32
1528 ", CID0 0x%2.2" PRIx32
,
1529 c_cid3
, c_cid2
, c_cid1
, c_cid0
);
1530 command_print(cmd_ctx
, "\t\tPeripheral ID[4..0] = hex "
1531 "%2.2x %2.2x %2.2x %2.2x %2.2x",
1533 (int) c_pid3
, (int) c_pid2
,
1534 (int) c_pid1
, (int) c_pid0
);
1536 /* Part number interpretations are from Cortex
1537 * core specs, the CoreSight components TRM
1538 * (ARM DDI 0314H), and ETM specs; also from
1539 * chip observation (e.g. TI SDTI).
1541 part_num
= c_pid0
& 0xff;
1542 part_num
|= (c_pid1
& 0x0f) << 8;
1545 type
= "Cortex-M3 NVIC";
1546 full
= "(Interrupt Controller)";
1549 type
= "Cortex-M3 ITM";
1550 full
= "(Instrumentation Trace Module)";
1553 type
= "Cortex-M3 DWT";
1554 full
= "(Data Watchpoint and Trace)";
1557 type
= "Cortex-M3 FBP";
1558 full
= "(Flash Patch and Breakpoint)";
1561 type
= "CoreSight ETM11";
1562 full
= "(Embedded Trace)";
1564 // case 0x113: what?
1565 case 0x120: /* from OMAP3 memmap */
1567 full
= "(System Debug Trace Interface)";
1569 case 0x343: /* from OMAP3 memmap */
1574 type
= "Cortex-M3 ETM";
1575 full
= "(Embedded Trace)";
1578 type
= "Coresight CTI";
1579 full
= "(Cross Trigger)";
1582 type
= "Coresight ETB";
1583 full
= "(Trace Buffer)";
1586 type
= "Coresight CSTF";
1587 full
= "(Trace Funnel)";
1590 type
= "CoreSight ETM9";
1591 full
= "(Embedded Trace)";
1594 type
= "Coresight TPIU";
1595 full
= "(Trace Port Interface Unit)";
1598 type
= "Cortex-A8 ETM";
1599 full
= "(Embedded Trace)";
1602 type
= "Cortex-A8 CTI";
1603 full
= "(Cross Trigger)";
1606 type
= "Cortex-M3 TPIU";
1607 full
= "(Trace Port Interface Unit)";
1610 type
= "Cortex-A8 Debug";
1611 full
= "(Debug Unit)";
1614 type
= "-*- unrecognized -*-";
1618 command_print(cmd_ctx
, "\t\tPart is %s %s",
1624 command_print(cmd_ctx
, "\t\tComponent not present");
1626 command_print(cmd_ctx
, "\t\tEnd of ROM table");
1629 } while (romentry
> 0);
1633 command_print(cmd_ctx
, "\tNo ROM table present");
1635 dap_ap_select(swjdp
, apselold
);
1640 DAP_COMMAND_HANDLER(dap_baseaddr_command
)
1642 uint32_t apsel
, apselsave
, baseaddr
;
1645 apselsave
= swjdp
->apsel
;
1648 apsel
= swjdp
->apsel
;
1651 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[0], apsel
);
1652 /* AP address is in bits 31:24 of DP_SELECT */
1654 return ERROR_INVALID_ARGUMENTS
;
1657 return ERROR_COMMAND_SYNTAX_ERROR
;
1660 if (apselsave
!= apsel
)
1661 dap_ap_select(swjdp
, apsel
);
1663 /* NOTE: assumes we're talking to a MEM-AP, which
1664 * has a base address. There are other kinds of AP,
1665 * though they're not common for now. This should
1666 * use the ID register to verify it's a MEM-AP.
1668 dap_ap_read_reg_u32(swjdp
, AP_REG_BASE
, &baseaddr
);
1669 retval
= jtagdp_transaction_endcheck(swjdp
);
1670 command_print(CMD_CTX
, "0x%8.8" PRIx32
, baseaddr
);
1672 if (apselsave
!= apsel
)
1673 dap_ap_select(swjdp
, apselsave
);
1678 DAP_COMMAND_HANDLER(dap_memaccess_command
)
1680 uint32_t memaccess_tck
;
1684 memaccess_tck
= swjdp
->memaccess_tck
;
1687 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[0], memaccess_tck
);
1690 return ERROR_COMMAND_SYNTAX_ERROR
;
1692 swjdp
->memaccess_tck
= memaccess_tck
;
1694 command_print(CMD_CTX
, "memory bus access delay set to %" PRIi32
" tck",
1695 swjdp
->memaccess_tck
);
1700 DAP_COMMAND_HANDLER(dap_apsel_command
)
1702 uint32_t apsel
, apid
;
1710 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[0], apsel
);
1711 /* AP address is in bits 31:24 of DP_SELECT */
1713 return ERROR_INVALID_ARGUMENTS
;
1716 return ERROR_COMMAND_SYNTAX_ERROR
;
1719 dap_ap_select(swjdp
, apsel
);
1720 dap_ap_read_reg_u32(swjdp
, AP_REG_IDR
, &apid
);
1721 retval
= jtagdp_transaction_endcheck(swjdp
);
1722 command_print(CMD_CTX
, "ap %" PRIi32
" selected, identification register 0x%8.8" PRIx32
,
1728 DAP_COMMAND_HANDLER(dap_apid_command
)
1730 uint32_t apsel
, apselsave
, apid
;
1733 apselsave
= swjdp
->apsel
;
1736 apsel
= swjdp
->apsel
;
1739 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[0], apsel
);
1740 /* AP address is in bits 31:24 of DP_SELECT */
1742 return ERROR_INVALID_ARGUMENTS
;
1745 return ERROR_COMMAND_SYNTAX_ERROR
;
1748 if (apselsave
!= apsel
)
1749 dap_ap_select(swjdp
, apsel
);
1751 dap_ap_read_reg_u32(swjdp
, AP_REG_IDR
, &apid
);
1752 retval
= jtagdp_transaction_endcheck(swjdp
);
1753 command_print(CMD_CTX
, "0x%8.8" PRIx32
, apid
);
1754 if (apselsave
!= apsel
)
1755 dap_ap_select(swjdp
, apselsave
);
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