1 /***************************************************************************
2 * SWIM contributions by Ake Rehnman *
3 * Copyright (C) 2017 Ake Rehnman *
4 * ake.rehnman(at)gmail.com *
6 * Copyright (C) 2011-2012 by Mathias Kuester *
7 * Mathias Kuester <kesmtp@freenet.de> *
9 * Copyright (C) 2012 by Spencer Oliver *
10 * spen@spen-soft.co.uk *
12 * This code is based on https://github.com/texane/stlink *
14 * This program is free software; you can redistribute it and/or modify *
15 * it under the terms of the GNU General Public License as published by *
16 * the Free Software Foundation; either version 2 of the License, or *
17 * (at your option) any later version. *
19 * This program is distributed in the hope that it will be useful, *
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
22 * GNU General Public License for more details. *
24 * You should have received a copy of the GNU General Public License *
25 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
26 ***************************************************************************/
32 /* project specific includes */
33 #include <helper/binarybuffer.h>
34 #include <jtag/interface.h>
35 #include <jtag/hla/hla_layout.h>
36 #include <jtag/hla/hla_transport.h>
37 #include <jtag/hla/hla_interface.h>
38 #include <target/target.h>
40 #include <target/cortex_m.h>
42 #include "libusb_common.h"
44 #define ENDPOINT_IN 0x80
45 #define ENDPOINT_OUT 0x00
47 #define STLINK_WRITE_TIMEOUT 1000
48 #define STLINK_READ_TIMEOUT 1000
50 #define STLINK_NULL_EP 0
51 #define STLINK_RX_EP (1|ENDPOINT_IN)
52 #define STLINK_TX_EP (2|ENDPOINT_OUT)
53 #define STLINK_TRACE_EP (3|ENDPOINT_IN)
55 #define STLINK_V2_1_TX_EP (1|ENDPOINT_OUT)
56 #define STLINK_V2_1_TRACE_EP (2|ENDPOINT_IN)
58 #define STLINK_SG_SIZE (31)
59 #define STLINK_DATA_SIZE (4096)
60 #define STLINK_CMD_SIZE_V2 (16)
61 #define STLINK_CMD_SIZE_V1 (10)
63 #define STLINK_V1_PID (0x3744)
64 #define STLINK_V2_PID (0x3748)
65 #define STLINK_V2_1_PID (0x374B)
66 #define STLINK_V2_1_NO_MSD_PID (0x3752)
68 /* the current implementation of the stlink limits
69 * 8bit read/writes to max 64 bytes. */
70 #define STLINK_MAX_RW8 (64)
72 /* "WAIT" responses will be retried (with exponential backoff) at
73 * most this many times before failing to caller.
75 #define MAX_WAIT_RETRIES 8
77 enum stlink_jtag_api_version
{
78 STLINK_JTAG_API_V1
= 1,
83 struct stlink_usb_version
{
90 /** highest supported jtag api version */
91 enum stlink_jtag_api_version jtag_api_max
;
95 struct stlink_usb_handle_s
{
97 struct jtag_libusb_device_handle
*fd
;
99 struct libusb_transfer
*trans
;
107 uint8_t cmdbuf
[STLINK_SG_SIZE
];
113 uint8_t databuf
[STLINK_DATA_SIZE
];
115 uint32_t max_mem_packet
;
117 enum hl_transports transport
;
119 struct stlink_usb_version version
;
124 /** this is the currently used jtag api */
125 enum stlink_jtag_api_version jtag_api
;
128 /** whether SWO tracing is enabled or not */
130 /** trace module source clock */
133 /** reconnect is needed next time we try to query the
135 bool reconnect_pending
;
138 #define STLINK_SWIM_ERR_OK 0x00
139 #define STLINK_SWIM_BUSY 0x01
140 #define STLINK_DEBUG_ERR_OK 0x80
141 #define STLINK_DEBUG_ERR_FAULT 0x81
142 #define STLINK_SWD_AP_WAIT 0x10
143 #define STLINK_SWD_AP_FAULT 0x11
144 #define STLINK_SWD_AP_ERROR 0x12
145 #define STLINK_SWD_AP_PARITY_ERROR 0x13
146 #define STLINK_JTAG_WRITE_ERROR 0x0c
147 #define STLINK_JTAG_WRITE_VERIF_ERROR 0x0d
148 #define STLINK_SWD_DP_WAIT 0x14
149 #define STLINK_SWD_DP_FAULT 0x15
150 #define STLINK_SWD_DP_ERROR 0x16
151 #define STLINK_SWD_DP_PARITY_ERROR 0x17
153 #define STLINK_SWD_AP_WDATA_ERROR 0x18
154 #define STLINK_SWD_AP_STICKY_ERROR 0x19
155 #define STLINK_SWD_AP_STICKYORUN_ERROR 0x1a
157 #define STLINK_CORE_RUNNING 0x80
158 #define STLINK_CORE_HALTED 0x81
159 #define STLINK_CORE_STAT_UNKNOWN -1
161 #define STLINK_GET_VERSION 0xF1
162 #define STLINK_DEBUG_COMMAND 0xF2
163 #define STLINK_DFU_COMMAND 0xF3
164 #define STLINK_SWIM_COMMAND 0xF4
165 #define STLINK_GET_CURRENT_MODE 0xF5
166 #define STLINK_GET_TARGET_VOLTAGE 0xF7
168 #define STLINK_DEV_DFU_MODE 0x00
169 #define STLINK_DEV_MASS_MODE 0x01
170 #define STLINK_DEV_DEBUG_MODE 0x02
171 #define STLINK_DEV_SWIM_MODE 0x03
172 #define STLINK_DEV_BOOTLOADER_MODE 0x04
173 #define STLINK_DEV_UNKNOWN_MODE -1
175 #define STLINK_DFU_EXIT 0x07
178 STLINK_SWIM_ENTER_SEQ
179 1.3ms low then 750Hz then 1.5kHz
182 STM8 DM pulls reset pin low 50us
185 uint8_t (0=low|1=high)
192 send syncronization seq (16us low, response 64 clocks low)
194 #define STLINK_SWIM_ENTER 0x00
195 #define STLINK_SWIM_EXIT 0x01
196 #define STLINK_SWIM_READ_CAP 0x02
197 #define STLINK_SWIM_SPEED 0x03
198 #define STLINK_SWIM_ENTER_SEQ 0x04
199 #define STLINK_SWIM_GEN_RST 0x05
200 #define STLINK_SWIM_RESET 0x06
201 #define STLINK_SWIM_ASSERT_RESET 0x07
202 #define STLINK_SWIM_DEASSERT_RESET 0x08
203 #define STLINK_SWIM_READSTATUS 0x09
204 #define STLINK_SWIM_WRITEMEM 0x0a
205 #define STLINK_SWIM_READMEM 0x0b
206 #define STLINK_SWIM_READBUF 0x0c
208 #define STLINK_DEBUG_ENTER_JTAG 0x00
209 #define STLINK_DEBUG_GETSTATUS 0x01
210 #define STLINK_DEBUG_FORCEDEBUG 0x02
211 #define STLINK_DEBUG_APIV1_RESETSYS 0x03
212 #define STLINK_DEBUG_APIV1_READALLREGS 0x04
213 #define STLINK_DEBUG_APIV1_READREG 0x05
214 #define STLINK_DEBUG_APIV1_WRITEREG 0x06
215 #define STLINK_DEBUG_READMEM_32BIT 0x07
216 #define STLINK_DEBUG_WRITEMEM_32BIT 0x08
217 #define STLINK_DEBUG_RUNCORE 0x09
218 #define STLINK_DEBUG_STEPCORE 0x0a
219 #define STLINK_DEBUG_APIV1_SETFP 0x0b
220 #define STLINK_DEBUG_READMEM_8BIT 0x0c
221 #define STLINK_DEBUG_WRITEMEM_8BIT 0x0d
222 #define STLINK_DEBUG_APIV1_CLEARFP 0x0e
223 #define STLINK_DEBUG_APIV1_WRITEDEBUGREG 0x0f
224 #define STLINK_DEBUG_APIV1_SETWATCHPOINT 0x10
226 #define STLINK_DEBUG_ENTER_JTAG 0x00
227 #define STLINK_DEBUG_ENTER_SWD 0xa3
229 #define STLINK_DEBUG_APIV1_ENTER 0x20
230 #define STLINK_DEBUG_EXIT 0x21
231 #define STLINK_DEBUG_READCOREID 0x22
233 #define STLINK_DEBUG_APIV2_ENTER 0x30
234 #define STLINK_DEBUG_APIV2_READ_IDCODES 0x31
235 #define STLINK_DEBUG_APIV2_RESETSYS 0x32
236 #define STLINK_DEBUG_APIV2_READREG 0x33
237 #define STLINK_DEBUG_APIV2_WRITEREG 0x34
238 #define STLINK_DEBUG_APIV2_WRITEDEBUGREG 0x35
239 #define STLINK_DEBUG_APIV2_READDEBUGREG 0x36
241 #define STLINK_DEBUG_APIV2_READALLREGS 0x3A
242 #define STLINK_DEBUG_APIV2_GETLASTRWSTATUS 0x3B
243 #define STLINK_DEBUG_APIV2_DRIVE_NRST 0x3C
245 #define STLINK_DEBUG_APIV2_START_TRACE_RX 0x40
246 #define STLINK_DEBUG_APIV2_STOP_TRACE_RX 0x41
247 #define STLINK_DEBUG_APIV2_GET_TRACE_NB 0x42
248 #define STLINK_DEBUG_APIV2_SWD_SET_FREQ 0x43
250 #define STLINK_DEBUG_APIV2_DRIVE_NRST_LOW 0x00
251 #define STLINK_DEBUG_APIV2_DRIVE_NRST_HIGH 0x01
252 #define STLINK_DEBUG_APIV2_DRIVE_NRST_PULSE 0x02
254 #define STLINK_TRACE_SIZE 4096
255 #define STLINK_TRACE_MAX_HZ 2000000
256 #define STLINK_TRACE_MIN_VERSION 13
260 STLINK_MODE_UNKNOWN
= 0,
263 STLINK_MODE_DEBUG_JTAG
,
264 STLINK_MODE_DEBUG_SWD
,
265 STLINK_MODE_DEBUG_SWIM
268 #define REQUEST_SENSE 0x03
269 #define REQUEST_SENSE_LENGTH 18
271 static const struct {
274 } stlink_khz_to_speed_map
[] = {
276 {1800, 1}, /* default */
289 static void stlink_usb_init_buffer(void *handle
, uint8_t direction
, uint32_t size
);
290 static int stlink_swim_status(void *handle
);
293 static int stlink_usb_xfer_v1_get_status(void *handle
)
295 struct stlink_usb_handle_s
*h
= handle
;
297 assert(handle
!= NULL
);
300 memset(h
->cmdbuf
, 0, STLINK_SG_SIZE
);
302 if (jtag_libusb_bulk_read(h
->fd
, h
->rx_ep
, (char *)h
->cmdbuf
,
303 13, STLINK_READ_TIMEOUT
) != 13)
308 t1
= buf_get_u32(h
->cmdbuf
, 0, 32);
311 if (t1
!= 0x53425355)
319 if (h
->cmdbuf
[12] != 0)
326 static int stlink_usb_xfer_rw(void *handle
, int cmdsize
, const uint8_t *buf
, int size
)
328 struct stlink_usb_handle_s
*h
= handle
;
330 assert(handle
!= NULL
);
332 if (jtag_libusb_bulk_write(h
->fd
, h
->tx_ep
, (char *)h
->cmdbuf
, cmdsize
,
333 STLINK_WRITE_TIMEOUT
) != cmdsize
) {
337 if (h
->direction
== h
->tx_ep
&& size
) {
338 if (jtag_libusb_bulk_write(h
->fd
, h
->tx_ep
, (char *)buf
,
339 size
, STLINK_WRITE_TIMEOUT
) != size
) {
340 LOG_DEBUG("bulk write failed");
343 } else if (h
->direction
== h
->rx_ep
&& size
) {
344 if (jtag_libusb_bulk_read(h
->fd
, h
->rx_ep
, (char *)buf
,
345 size
, STLINK_READ_TIMEOUT
) != size
) {
346 LOG_DEBUG("bulk read failed");
355 static int stlink_usb_xfer_v1_get_sense(void *handle
)
358 struct stlink_usb_handle_s
*h
= handle
;
360 assert(handle
!= NULL
);
362 stlink_usb_init_buffer(handle
, h
->rx_ep
, 16);
364 h
->cmdbuf
[h
->cmdidx
++] = REQUEST_SENSE
;
365 h
->cmdbuf
[h
->cmdidx
++] = 0;
366 h
->cmdbuf
[h
->cmdidx
++] = 0;
367 h
->cmdbuf
[h
->cmdidx
++] = 0;
368 h
->cmdbuf
[h
->cmdidx
++] = REQUEST_SENSE_LENGTH
;
370 res
= stlink_usb_xfer_rw(handle
, REQUEST_SENSE_LENGTH
, h
->databuf
, 16);
375 if (stlink_usb_xfer_v1_get_status(handle
) != ERROR_OK
)
382 transfers block in cmdbuf
383 <size> indicates number of bytes in the following
386 static int stlink_usb_xfer(void *handle
, const uint8_t *buf
, int size
)
388 int err
, cmdsize
= STLINK_CMD_SIZE_V2
;
389 struct stlink_usb_handle_s
*h
= handle
;
391 assert(handle
!= NULL
);
393 if (h
->version
.stlink
== 1) {
394 cmdsize
= STLINK_SG_SIZE
;
395 /* put length in bCBWCBLength */
396 h
->cmdbuf
[14] = h
->cmdidx
-15;
399 err
= stlink_usb_xfer_rw(handle
, cmdsize
, buf
, size
);
404 if (h
->version
.stlink
== 1) {
405 if (stlink_usb_xfer_v1_get_status(handle
) != ERROR_OK
) {
406 /* check csw status */
407 if (h
->cmdbuf
[12] == 1) {
408 LOG_DEBUG("get sense");
409 if (stlink_usb_xfer_v1_get_sense(handle
) != ERROR_OK
)
420 Converts an STLINK status code held in the first byte of a response
421 to an openocd error, logs any error/wait status as debug output.
423 static int stlink_usb_error_check(void *handle
)
425 struct stlink_usb_handle_s
*h
= handle
;
427 assert(handle
!= NULL
);
429 if (h
->transport
== HL_TRANSPORT_SWIM
) {
430 switch (h
->databuf
[0]) {
431 case STLINK_SWIM_ERR_OK
:
433 case STLINK_SWIM_BUSY
:
436 LOG_DEBUG("unknown/unexpected STLINK status code 0x%x", h
->databuf
[0]);
441 /* TODO: no error checking yet on api V1 */
442 if (h
->jtag_api
== STLINK_JTAG_API_V1
)
443 h
->databuf
[0] = STLINK_DEBUG_ERR_OK
;
445 switch (h
->databuf
[0]) {
446 case STLINK_DEBUG_ERR_OK
:
448 case STLINK_DEBUG_ERR_FAULT
:
449 LOG_DEBUG("SWD fault response (0x%x)", STLINK_DEBUG_ERR_FAULT
);
451 case STLINK_SWD_AP_WAIT
:
452 LOG_DEBUG("wait status SWD_AP_WAIT (0x%x)", STLINK_SWD_AP_WAIT
);
454 case STLINK_SWD_DP_WAIT
:
455 LOG_DEBUG("wait status SWD_DP_WAIT (0x%x)", STLINK_SWD_DP_WAIT
);
457 case STLINK_JTAG_WRITE_ERROR
:
458 LOG_DEBUG("Write error");
460 case STLINK_JTAG_WRITE_VERIF_ERROR
:
461 LOG_DEBUG("Write verify error, ignoring");
463 case STLINK_SWD_AP_FAULT
:
464 /* git://git.ac6.fr/openocd commit 657e3e885b9ee10
465 * returns ERROR_OK with the comment:
466 * Change in error status when reading outside RAM.
467 * This fix allows CDT plugin to visualize memory.
469 LOG_DEBUG("STLINK_SWD_AP_FAULT");
471 case STLINK_SWD_AP_ERROR
:
472 LOG_DEBUG("STLINK_SWD_AP_ERROR");
474 case STLINK_SWD_AP_PARITY_ERROR
:
475 LOG_DEBUG("STLINK_SWD_AP_PARITY_ERROR");
477 case STLINK_SWD_DP_FAULT
:
478 LOG_DEBUG("STLINK_SWD_DP_FAULT");
480 case STLINK_SWD_DP_ERROR
:
481 LOG_DEBUG("STLINK_SWD_DP_ERROR");
483 case STLINK_SWD_DP_PARITY_ERROR
:
484 LOG_DEBUG("STLINK_SWD_DP_PARITY_ERROR");
486 case STLINK_SWD_AP_WDATA_ERROR
:
487 LOG_DEBUG("STLINK_SWD_AP_WDATA_ERROR");
489 case STLINK_SWD_AP_STICKY_ERROR
:
490 LOG_DEBUG("STLINK_SWD_AP_STICKY_ERROR");
492 case STLINK_SWD_AP_STICKYORUN_ERROR
:
493 LOG_DEBUG("STLINK_SWD_AP_STICKYORUN_ERROR");
496 LOG_DEBUG("unknown/unexpected STLINK status code 0x%x", h
->databuf
[0]);
502 /** Issue an STLINK command via USB transfer, with retries on any wait status responses.
504 Works for commands where the STLINK_DEBUG status is returned in the first
505 byte of the response packet. For SWIM a SWIM_READSTATUS is requested instead.
507 Returns an openocd result code.
509 static int stlink_cmd_allow_retry(void *handle
, const uint8_t *buf
, int size
)
513 struct stlink_usb_handle_s
*h
= handle
;
516 if ((h
->transport
!= HL_TRANSPORT_SWIM
) || !retries
) {
517 res
= stlink_usb_xfer(handle
, buf
, size
);
522 if (h
->transport
== HL_TRANSPORT_SWIM
) {
523 res
= stlink_swim_status(handle
);
528 res
= stlink_usb_error_check(handle
);
529 if (res
== ERROR_WAIT
&& retries
< MAX_WAIT_RETRIES
) {
530 usleep((1<<retries
++) * 1000);
538 static int stlink_usb_read_trace(void *handle
, const uint8_t *buf
, int size
)
540 struct stlink_usb_handle_s
*h
= handle
;
542 assert(handle
!= NULL
);
544 assert(h
->version
.stlink
>= 2);
546 if (jtag_libusb_bulk_read(h
->fd
, h
->trace_ep
, (char *)buf
,
547 size
, STLINK_READ_TIMEOUT
) != size
) {
548 LOG_ERROR("bulk trace read failed");
556 this function writes transfer length in
557 the right place in the cb
559 static void stlink_usb_set_cbw_transfer_datalength(void *handle
, uint32_t size
)
561 struct stlink_usb_handle_s
*h
= handle
;
563 buf_set_u32(h
->cmdbuf
+8, 0, 32, size
);
566 static void stlink_usb_xfer_v1_create_cmd(void *handle
, uint8_t direction
, uint32_t size
)
568 struct stlink_usb_handle_s
*h
= handle
;
570 /* fill the send buffer */
571 strcpy((char *)h
->cmdbuf
, "USBC");
573 /* csw tag not used */
574 buf_set_u32(h
->cmdbuf
+h
->cmdidx
, 0, 32, 0);
576 /* cbw data transfer length (in the following data phase in or out) */
577 buf_set_u32(h
->cmdbuf
+h
->cmdidx
, 0, 32, size
);
580 h
->cmdbuf
[h
->cmdidx
++] = (direction
== h
->rx_ep
? ENDPOINT_IN
: ENDPOINT_OUT
);
581 h
->cmdbuf
[h
->cmdidx
++] = 0; /* lun */
582 /* cdb clength (is filled in at xfer) */
583 h
->cmdbuf
[h
->cmdidx
++] = 0;
587 static void stlink_usb_init_buffer(void *handle
, uint8_t direction
, uint32_t size
)
589 struct stlink_usb_handle_s
*h
= handle
;
591 h
->direction
= direction
;
595 memset(h
->cmdbuf
, 0, STLINK_SG_SIZE
);
596 memset(h
->databuf
, 0, STLINK_DATA_SIZE
);
598 if (h
->version
.stlink
== 1)
599 stlink_usb_xfer_v1_create_cmd(handle
, direction
, size
);
603 static int stlink_usb_version(void *handle
)
607 struct stlink_usb_handle_s
*h
= handle
;
609 assert(handle
!= NULL
);
611 stlink_usb_init_buffer(handle
, h
->rx_ep
, 6);
613 h
->cmdbuf
[h
->cmdidx
++] = STLINK_GET_VERSION
;
615 res
= stlink_usb_xfer(handle
, h
->databuf
, 6);
620 v
= (h
->databuf
[0] << 8) | h
->databuf
[1];
622 h
->version
.stlink
= (v
>> 12) & 0x0f;
623 h
->version
.jtag
= (v
>> 6) & 0x3f;
624 h
->version
.swim
= v
& 0x3f;
625 h
->vid
= buf_get_u32(h
->databuf
, 16, 16);
626 h
->pid
= buf_get_u32(h
->databuf
, 32, 16);
628 /* set the supported jtag api version
629 * API V2 is supported since JTAG V11
631 if (h
->version
.jtag
>= 11)
632 h
->version
.jtag_api_max
= STLINK_JTAG_API_V2
;
634 h
->version
.jtag_api_max
= STLINK_JTAG_API_V1
;
636 LOG_INFO("STLINK v%d JTAG v%d API v%d SWIM v%d VID 0x%04X PID 0x%04X",
639 (h
->version
.jtag_api_max
== STLINK_JTAG_API_V1
) ? 1 : 2,
647 static int stlink_usb_check_voltage(void *handle
, float *target_voltage
)
649 struct stlink_usb_handle_s
*h
= handle
;
650 uint32_t adc_results
[2];
652 /* only supported by stlink/v2 and for firmware >= 13 */
653 if (h
->version
.stlink
== 1 || h
->version
.jtag
< 13)
654 return ERROR_COMMAND_NOTFOUND
;
656 stlink_usb_init_buffer(handle
, h
->rx_ep
, 8);
658 h
->cmdbuf
[h
->cmdidx
++] = STLINK_GET_TARGET_VOLTAGE
;
660 int result
= stlink_usb_xfer(handle
, h
->databuf
, 8);
662 if (result
!= ERROR_OK
)
666 adc_results
[0] = le_to_h_u32(h
->databuf
);
667 adc_results
[1] = le_to_h_u32(h
->databuf
+ 4);
672 *target_voltage
= 2 * ((float)adc_results
[1]) * (float)(1.2 / adc_results
[0]);
674 LOG_INFO("Target voltage: %f", (double)*target_voltage
);
679 static int stlink_usb_set_swdclk(void *handle
, uint16_t clk_divisor
)
681 struct stlink_usb_handle_s
*h
= handle
;
683 assert(handle
!= NULL
);
685 /* only supported by stlink/v2 and for firmware >= 22 */
686 if (h
->version
.stlink
== 1 || h
->version
.jtag
< 22)
687 return ERROR_COMMAND_NOTFOUND
;
689 stlink_usb_init_buffer(handle
, h
->rx_ep
, 2);
691 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
692 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_APIV2_SWD_SET_FREQ
;
693 h_u16_to_le(h
->cmdbuf
+h
->cmdidx
, clk_divisor
);
696 int result
= stlink_cmd_allow_retry(handle
, h
->databuf
, 2);
698 if (result
!= ERROR_OK
)
705 static int stlink_usb_current_mode(void *handle
, uint8_t *mode
)
708 struct stlink_usb_handle_s
*h
= handle
;
710 assert(handle
!= NULL
);
712 stlink_usb_init_buffer(handle
, h
->rx_ep
, 2);
714 h
->cmdbuf
[h
->cmdidx
++] = STLINK_GET_CURRENT_MODE
;
716 res
= stlink_usb_xfer(handle
, h
->databuf
, 2);
721 *mode
= h
->databuf
[0];
727 static int stlink_usb_mode_enter(void *handle
, enum stlink_mode type
)
730 struct stlink_usb_handle_s
*h
= handle
;
732 assert(handle
!= NULL
);
734 /* on api V2 we are able the read the latest command
736 * TODO: we need the test on api V1 too
738 if (h
->jtag_api
== STLINK_JTAG_API_V2
)
741 stlink_usb_init_buffer(handle
, h
->rx_ep
, rx_size
);
744 case STLINK_MODE_DEBUG_JTAG
:
745 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
746 if (h
->jtag_api
== STLINK_JTAG_API_V1
)
747 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_APIV1_ENTER
;
749 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_APIV2_ENTER
;
750 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_ENTER_JTAG
;
752 case STLINK_MODE_DEBUG_SWD
:
753 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
754 if (h
->jtag_api
== STLINK_JTAG_API_V1
)
755 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_APIV1_ENTER
;
757 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_APIV2_ENTER
;
758 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_ENTER_SWD
;
760 case STLINK_MODE_DEBUG_SWIM
:
761 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_COMMAND
;
762 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_ENTER
;
763 /* no answer for this function... */
766 case STLINK_MODE_DFU
:
767 case STLINK_MODE_MASS
:
772 return stlink_cmd_allow_retry(handle
, h
->databuf
, rx_size
);
776 static int stlink_usb_mode_leave(void *handle
, enum stlink_mode type
)
779 struct stlink_usb_handle_s
*h
= handle
;
781 assert(handle
!= NULL
);
783 stlink_usb_init_buffer(handle
, STLINK_NULL_EP
, 0);
786 case STLINK_MODE_DEBUG_JTAG
:
787 case STLINK_MODE_DEBUG_SWD
:
788 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
789 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_EXIT
;
791 case STLINK_MODE_DEBUG_SWIM
:
792 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_COMMAND
;
793 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_EXIT
;
795 case STLINK_MODE_DFU
:
796 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DFU_COMMAND
;
797 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DFU_EXIT
;
799 case STLINK_MODE_MASS
:
804 res
= stlink_usb_xfer(handle
, 0, 0);
812 static int stlink_usb_assert_srst(void *handle
, int srst
);
814 static enum stlink_mode
stlink_get_mode(enum hl_transports t
)
817 case HL_TRANSPORT_SWD
:
818 return STLINK_MODE_DEBUG_SWD
;
819 case HL_TRANSPORT_JTAG
:
820 return STLINK_MODE_DEBUG_JTAG
;
821 case HL_TRANSPORT_SWIM
:
822 return STLINK_MODE_DEBUG_SWIM
;
824 return STLINK_MODE_UNKNOWN
;
829 static int stlink_usb_init_mode(void *handle
, bool connect_under_reset
)
833 enum stlink_mode emode
;
834 struct stlink_usb_handle_s
*h
= handle
;
836 assert(handle
!= NULL
);
838 res
= stlink_usb_current_mode(handle
, &mode
);
843 LOG_DEBUG("MODE: 0x%02X", mode
);
845 /* try to exit current mode */
847 case STLINK_DEV_DFU_MODE
:
848 emode
= STLINK_MODE_DFU
;
850 case STLINK_DEV_DEBUG_MODE
:
851 emode
= STLINK_MODE_DEBUG_SWD
;
853 case STLINK_DEV_SWIM_MODE
:
854 emode
= STLINK_MODE_DEBUG_SWIM
;
856 case STLINK_DEV_BOOTLOADER_MODE
:
857 case STLINK_DEV_MASS_MODE
:
859 emode
= STLINK_MODE_UNKNOWN
;
863 if (emode
!= STLINK_MODE_UNKNOWN
) {
864 res
= stlink_usb_mode_leave(handle
, emode
);
870 res
= stlink_usb_current_mode(handle
, &mode
);
875 /* we check the target voltage here as an aid to debugging connection problems.
876 * the stlink requires the target Vdd to be connected for reliable debugging.
877 * this cmd is supported in all modes except DFU
879 if (mode
!= STLINK_DEV_DFU_MODE
) {
881 float target_voltage
;
883 /* check target voltage (if supported) */
884 res
= stlink_usb_check_voltage(h
, &target_voltage
);
886 if (res
!= ERROR_OK
) {
887 if (res
!= ERROR_COMMAND_NOTFOUND
)
888 LOG_ERROR("voltage check failed");
889 /* attempt to continue as it is not a catastrophic failure */
891 /* check for a sensible target voltage, operating range is 1.65-5.5v
892 * according to datasheet */
893 if (target_voltage
< 1.5)
894 LOG_ERROR("target voltage may be too low for reliable debugging");
898 LOG_DEBUG("MODE: 0x%02X", mode
);
900 /* set selected mode */
901 emode
= stlink_get_mode(h
->transport
);
903 if (emode
== STLINK_MODE_UNKNOWN
) {
904 LOG_ERROR("selected mode (transport) not supported");
908 /* preliminary SRST assert:
909 * We want SRST is asserted before activating debug signals (mode_enter).
910 * As the required mode has not been set, the adapter may not know what pin to use.
911 * Tested firmware STLINK v2 JTAG v29 API v2 SWIM v0 uses T_NRST pin by default
912 * Tested firmware STLINK v2 JTAG v27 API v2 SWIM v6 uses T_NRST pin by default
913 * after power on, SWIM_RST stays unchanged */
914 if (connect_under_reset
&& emode
!= STLINK_MODE_DEBUG_SWIM
)
915 stlink_usb_assert_srst(handle
, 0);
916 /* do not check the return status here, we will
917 proceed and enter the desired mode below
918 and try asserting srst again. */
920 res
= stlink_usb_mode_enter(handle
, emode
);
924 /* assert SRST again: a little bit late but now the adapter knows for sure what pin to use */
925 if (connect_under_reset
) {
926 res
= stlink_usb_assert_srst(handle
, 0);
931 res
= stlink_usb_current_mode(handle
, &mode
);
936 LOG_DEBUG("MODE: 0x%02X", mode
);
941 /* request status from last swim request */
942 static int stlink_swim_status(void *handle
)
944 struct stlink_usb_handle_s
*h
= handle
;
947 stlink_usb_init_buffer(handle
, h
->rx_ep
, 4);
948 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_COMMAND
;
949 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_READSTATUS
;
950 res
= stlink_usb_xfer(handle
, h
->databuf
, 4);
956 the purpose of this function is unknown...
957 capabilites? anyway for swim v6 it returns
960 __attribute__((unused
))
961 static int stlink_swim_cap(void *handle
, uint8_t *cap
)
963 struct stlink_usb_handle_s
*h
= handle
;
966 stlink_usb_init_buffer(handle
, h
->rx_ep
, 8);
967 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_COMMAND
;
968 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_READ_CAP
;
969 h
->cmdbuf
[h
->cmdidx
++] = 0x01;
970 res
= stlink_usb_xfer(handle
, h
->databuf
, 8);
973 memcpy(cap
, h
->databuf
, 8);
977 /* debug dongle assert/deassert sreset line */
978 static int stlink_swim_assert_reset(void *handle
, int reset
)
980 struct stlink_usb_handle_s
*h
= handle
;
983 stlink_usb_init_buffer(handle
, h
->rx_ep
, 0);
984 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_COMMAND
;
986 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_ASSERT_RESET
;
988 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_DEASSERT_RESET
;
989 res
= stlink_cmd_allow_retry(handle
, h
->databuf
, 0);
997 1.3ms low then 750Hz then 1.5kHz
999 static int stlink_swim_enter(void *handle
)
1001 struct stlink_usb_handle_s
*h
= handle
;
1004 stlink_usb_init_buffer(handle
, h
->rx_ep
, 0);
1005 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_COMMAND
;
1006 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_ENTER_SEQ
;
1007 res
= stlink_cmd_allow_retry(handle
, h
->databuf
, 0);
1008 if (res
!= ERROR_OK
)
1013 /* switch high/low speed swim */
1014 static int stlink_swim_speed(void *handle
, int speed
)
1016 struct stlink_usb_handle_s
*h
= handle
;
1019 stlink_usb_init_buffer(handle
, h
->rx_ep
, 0);
1020 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_COMMAND
;
1021 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_SPEED
;
1023 h
->cmdbuf
[h
->cmdidx
++] = 1;
1025 h
->cmdbuf
[h
->cmdidx
++] = 0;
1026 res
= stlink_cmd_allow_retry(handle
, h
->databuf
, 0);
1027 if (res
!= ERROR_OK
)
1033 initiate srst from swim.
1034 nrst is pulled low for 50us.
1036 static int stlink_swim_generate_rst(void *handle
)
1038 struct stlink_usb_handle_s
*h
= handle
;
1041 stlink_usb_init_buffer(handle
, h
->rx_ep
, 0);
1042 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_COMMAND
;
1043 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_GEN_RST
;
1044 res
= stlink_cmd_allow_retry(handle
, h
->databuf
, 0);
1045 if (res
!= ERROR_OK
)
1051 send resyncronize sequence
1052 swim is pulled low for 16us
1053 reply is 64 clks low
1055 static int stlink_swim_resync(void *handle
)
1057 struct stlink_usb_handle_s
*h
= handle
;
1060 stlink_usb_init_buffer(handle
, h
->rx_ep
, 0);
1061 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_COMMAND
;
1062 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_RESET
;
1063 res
= stlink_cmd_allow_retry(handle
, h
->databuf
, 0);
1064 if (res
!= ERROR_OK
)
1069 static int stlink_swim_writebytes(void *handle
, uint32_t addr
, uint32_t len
, const uint8_t *data
)
1071 struct stlink_usb_handle_s
*h
= handle
;
1074 unsigned int datalen
= 0;
1075 int cmdsize
= STLINK_CMD_SIZE_V2
;
1077 if (len
> STLINK_DATA_SIZE
)
1080 if (h
->version
.stlink
== 1)
1081 cmdsize
= STLINK_SG_SIZE
;
1083 stlink_usb_init_buffer(handle
, h
->tx_ep
, 0);
1084 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_COMMAND
;
1085 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_WRITEMEM
;
1086 h_u16_to_be(h
->cmdbuf
+h
->cmdidx
, len
);
1088 h_u32_to_be(h
->cmdbuf
+h
->cmdidx
, addr
);
1090 for (i
= 0; i
< len
; i
++) {
1091 if (h
->cmdidx
== cmdsize
)
1092 h
->databuf
[datalen
++] = *(data
++);
1094 h
->cmdbuf
[h
->cmdidx
++] = *(data
++);
1096 if (h
->version
.stlink
== 1)
1097 stlink_usb_set_cbw_transfer_datalength(handle
, datalen
);
1099 res
= stlink_cmd_allow_retry(handle
, h
->databuf
, datalen
);
1100 if (res
!= ERROR_OK
)
1105 static int stlink_swim_readbytes(void *handle
, uint32_t addr
, uint32_t len
, uint8_t *data
)
1107 struct stlink_usb_handle_s
*h
= handle
;
1110 if (len
> STLINK_DATA_SIZE
)
1113 stlink_usb_init_buffer(handle
, h
->rx_ep
, 0);
1114 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_COMMAND
;
1115 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_READMEM
;
1116 h_u16_to_be(h
->cmdbuf
+h
->cmdidx
, len
);
1118 h_u32_to_be(h
->cmdbuf
+h
->cmdidx
, addr
);
1120 res
= stlink_cmd_allow_retry(handle
, h
->databuf
, 0);
1121 if (res
!= ERROR_OK
)
1124 stlink_usb_init_buffer(handle
, h
->rx_ep
, len
);
1125 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_COMMAND
;
1126 h
->cmdbuf
[h
->cmdidx
++] = STLINK_SWIM_READBUF
;
1127 res
= stlink_usb_xfer(handle
, data
, len
);
1128 if (res
!= ERROR_OK
)
1135 static int stlink_usb_idcode(void *handle
, uint32_t *idcode
)
1138 struct stlink_usb_handle_s
*h
= handle
;
1140 assert(handle
!= NULL
);
1142 /* there is no swim read core id cmd */
1143 if (h
->transport
== HL_TRANSPORT_SWIM
) {
1148 stlink_usb_init_buffer(handle
, h
->rx_ep
, 4);
1150 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
1151 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_READCOREID
;
1153 res
= stlink_usb_xfer(handle
, h
->databuf
, 4);
1155 if (res
!= ERROR_OK
)
1158 *idcode
= le_to_h_u32(h
->databuf
);
1160 LOG_DEBUG("IDCODE: 0x%08" PRIX32
, *idcode
);
1165 static int stlink_usb_v2_read_debug_reg(void *handle
, uint32_t addr
, uint32_t *val
)
1167 struct stlink_usb_handle_s
*h
= handle
;
1170 assert(handle
!= NULL
);
1172 stlink_usb_init_buffer(handle
, h
->rx_ep
, 8);
1174 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
1175 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_APIV2_READDEBUGREG
;
1176 h_u32_to_le(h
->cmdbuf
+h
->cmdidx
, addr
);
1179 res
= stlink_cmd_allow_retry(handle
, h
->databuf
, 8);
1180 if (res
!= ERROR_OK
)
1183 *val
= le_to_h_u32(h
->databuf
+ 4);
1187 static int stlink_usb_write_debug_reg(void *handle
, uint32_t addr
, uint32_t val
)
1189 struct stlink_usb_handle_s
*h
= handle
;
1191 assert(handle
!= NULL
);
1193 stlink_usb_init_buffer(handle
, h
->rx_ep
, 2);
1195 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
1196 if (h
->jtag_api
== STLINK_JTAG_API_V1
)
1197 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_APIV1_WRITEDEBUGREG
;
1199 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_APIV2_WRITEDEBUGREG
;
1200 h_u32_to_le(h
->cmdbuf
+h
->cmdidx
, addr
);
1202 h_u32_to_le(h
->cmdbuf
+h
->cmdidx
, val
);
1205 return stlink_cmd_allow_retry(handle
, h
->databuf
, 2);
1209 static int stlink_usb_trace_read(void *handle
, uint8_t *buf
, size_t *size
)
1211 struct stlink_usb_handle_s
*h
= handle
;
1213 assert(handle
!= NULL
);
1215 if (h
->trace
.enabled
&& h
->version
.jtag
>= STLINK_TRACE_MIN_VERSION
) {
1218 stlink_usb_init_buffer(handle
, h
->rx_ep
, 10);
1220 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
1221 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_APIV2_GET_TRACE_NB
;
1223 res
= stlink_usb_xfer(handle
, h
->databuf
, 2);
1224 if (res
!= ERROR_OK
)
1227 size_t bytes_avail
= le_to_h_u16(h
->databuf
);
1228 *size
= bytes_avail
< *size
? bytes_avail
: *size
- 1;
1231 res
= stlink_usb_read_trace(handle
, buf
, *size
);
1232 if (res
!= ERROR_OK
)
1241 static enum target_state
stlink_usb_v2_get_status(void *handle
)
1246 result
= stlink_usb_v2_read_debug_reg(handle
, DCB_DHCSR
, &status
);
1247 if (result
!= ERROR_OK
)
1248 return TARGET_UNKNOWN
;
1250 if (status
& S_HALT
)
1251 return TARGET_HALTED
;
1252 else if (status
& S_RESET_ST
)
1253 return TARGET_RESET
;
1255 return TARGET_RUNNING
;
1259 static enum target_state
stlink_usb_state(void *handle
)
1262 struct stlink_usb_handle_s
*h
= handle
;
1264 assert(handle
!= NULL
);
1266 if (h
->transport
== HL_TRANSPORT_SWIM
) {
1267 res
= stlink_usb_mode_enter(handle
, stlink_get_mode(h
->transport
));
1268 if (res
!= ERROR_OK
)
1269 return TARGET_UNKNOWN
;
1271 res
= stlink_swim_resync(handle
);
1272 if (res
!= ERROR_OK
)
1273 return TARGET_UNKNOWN
;
1278 if (h
->reconnect_pending
) {
1279 LOG_INFO("Previous state query failed, trying to reconnect");
1280 res
= stlink_usb_mode_enter(handle
, stlink_get_mode(h
->transport
));
1282 if (res
!= ERROR_OK
)
1283 return TARGET_UNKNOWN
;
1285 h
->reconnect_pending
= false;
1288 if (h
->jtag_api
== STLINK_JTAG_API_V2
) {
1289 res
= stlink_usb_v2_get_status(handle
);
1290 if (res
== TARGET_UNKNOWN
)
1291 h
->reconnect_pending
= true;
1295 stlink_usb_init_buffer(handle
, h
->rx_ep
, 2);
1297 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
1298 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_GETSTATUS
;
1300 res
= stlink_usb_xfer(handle
, h
->databuf
, 2);
1302 if (res
!= ERROR_OK
)
1303 return TARGET_UNKNOWN
;
1305 if (h
->databuf
[0] == STLINK_CORE_RUNNING
)
1306 return TARGET_RUNNING
;
1307 if (h
->databuf
[0] == STLINK_CORE_HALTED
)
1308 return TARGET_HALTED
;
1310 h
->reconnect_pending
= true;
1312 return TARGET_UNKNOWN
;
1315 static int stlink_usb_assert_srst(void *handle
, int srst
)
1317 struct stlink_usb_handle_s
*h
= handle
;
1319 assert(handle
!= NULL
);
1321 if (h
->transport
== HL_TRANSPORT_SWIM
)
1322 return stlink_swim_assert_reset(handle
, srst
);
1324 if (h
->version
.stlink
== 1)
1325 return ERROR_COMMAND_NOTFOUND
;
1327 stlink_usb_init_buffer(handle
, h
->rx_ep
, 2);
1329 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
1330 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_APIV2_DRIVE_NRST
;
1331 h
->cmdbuf
[h
->cmdidx
++] = srst
;
1333 return stlink_cmd_allow_retry(handle
, h
->databuf
, 2);
1337 static void stlink_usb_trace_disable(void *handle
)
1340 struct stlink_usb_handle_s
*h
= handle
;
1342 assert(handle
!= NULL
);
1344 assert(h
->version
.jtag
>= STLINK_TRACE_MIN_VERSION
);
1346 LOG_DEBUG("Tracing: disable");
1348 stlink_usb_init_buffer(handle
, h
->rx_ep
, 2);
1349 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
1350 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_APIV2_STOP_TRACE_RX
;
1351 res
= stlink_usb_xfer(handle
, h
->databuf
, 2);
1353 if (res
== ERROR_OK
)
1354 h
->trace
.enabled
= false;
1359 static int stlink_usb_trace_enable(void *handle
)
1362 struct stlink_usb_handle_s
*h
= handle
;
1364 assert(handle
!= NULL
);
1366 if (h
->version
.jtag
>= STLINK_TRACE_MIN_VERSION
) {
1367 stlink_usb_init_buffer(handle
, h
->rx_ep
, 10);
1369 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
1370 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_APIV2_START_TRACE_RX
;
1371 h_u16_to_le(h
->cmdbuf
+h
->cmdidx
, (uint16_t)STLINK_TRACE_SIZE
);
1373 h_u32_to_le(h
->cmdbuf
+h
->cmdidx
, h
->trace
.source_hz
);
1376 res
= stlink_usb_xfer(handle
, h
->databuf
, 2);
1378 if (res
== ERROR_OK
) {
1379 h
->trace
.enabled
= true;
1380 LOG_DEBUG("Tracing: recording at %" PRIu32
"Hz", h
->trace
.source_hz
);
1383 LOG_ERROR("Tracing is not supported by this version.");
1391 static int stlink_usb_reset(void *handle
)
1393 struct stlink_usb_handle_s
*h
= handle
;
1396 assert(handle
!= NULL
);
1398 if (h
->transport
== HL_TRANSPORT_SWIM
)
1399 return stlink_swim_generate_rst(handle
);
1401 stlink_usb_init_buffer(handle
, h
->rx_ep
, 2);
1403 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
1405 if (h
->jtag_api
== STLINK_JTAG_API_V1
)
1406 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_APIV1_RESETSYS
;
1408 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_APIV2_RESETSYS
;
1410 retval
= stlink_cmd_allow_retry(handle
, h
->databuf
, 2);
1411 if (retval
!= ERROR_OK
)
1414 if (h
->trace
.enabled
) {
1415 stlink_usb_trace_disable(h
);
1416 return stlink_usb_trace_enable(h
);
1423 static int stlink_usb_run(void *handle
)
1426 struct stlink_usb_handle_s
*h
= handle
;
1428 assert(handle
!= NULL
);
1430 if (h
->jtag_api
== STLINK_JTAG_API_V2
) {
1431 res
= stlink_usb_write_debug_reg(handle
, DCB_DHCSR
, DBGKEY
|C_DEBUGEN
);
1436 stlink_usb_init_buffer(handle
, h
->rx_ep
, 2);
1438 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
1439 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_RUNCORE
;
1441 return stlink_cmd_allow_retry(handle
, h
->databuf
, 2);
1445 static int stlink_usb_halt(void *handle
)
1448 struct stlink_usb_handle_s
*h
= handle
;
1450 assert(handle
!= NULL
);
1452 if (h
->jtag_api
== STLINK_JTAG_API_V2
) {
1453 res
= stlink_usb_write_debug_reg(handle
, DCB_DHCSR
, DBGKEY
|C_HALT
|C_DEBUGEN
);
1458 stlink_usb_init_buffer(handle
, h
->rx_ep
, 2);
1460 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
1461 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_FORCEDEBUG
;
1463 return stlink_cmd_allow_retry(handle
, h
->databuf
, 2);
1467 static int stlink_usb_step(void *handle
)
1469 struct stlink_usb_handle_s
*h
= handle
;
1471 assert(handle
!= NULL
);
1473 if (h
->jtag_api
== STLINK_JTAG_API_V2
) {
1474 /* TODO: this emulates the v1 api, it should really use a similar auto mask isr
1475 * that the Cortex-M3 currently does. */
1476 stlink_usb_write_debug_reg(handle
, DCB_DHCSR
, DBGKEY
|C_HALT
|C_MASKINTS
|C_DEBUGEN
);
1477 stlink_usb_write_debug_reg(handle
, DCB_DHCSR
, DBGKEY
|C_STEP
|C_MASKINTS
|C_DEBUGEN
);
1478 return stlink_usb_write_debug_reg(handle
, DCB_DHCSR
, DBGKEY
|C_HALT
|C_DEBUGEN
);
1481 stlink_usb_init_buffer(handle
, h
->rx_ep
, 2);
1483 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
1484 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_STEPCORE
;
1486 return stlink_cmd_allow_retry(handle
, h
->databuf
, 2);
1490 static int stlink_usb_read_regs(void *handle
)
1493 struct stlink_usb_handle_s
*h
= handle
;
1495 assert(handle
!= NULL
);
1497 stlink_usb_init_buffer(handle
, h
->rx_ep
, 84);
1499 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
1500 if (h
->jtag_api
== STLINK_JTAG_API_V1
)
1501 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_APIV1_READALLREGS
;
1503 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_APIV2_READALLREGS
;
1505 res
= stlink_usb_xfer(handle
, h
->databuf
, 84);
1507 if (res
!= ERROR_OK
)
1514 static int stlink_usb_read_reg(void *handle
, int num
, uint32_t *val
)
1517 struct stlink_usb_handle_s
*h
= handle
;
1519 assert(handle
!= NULL
);
1521 stlink_usb_init_buffer(handle
, h
->rx_ep
, h
->jtag_api
== STLINK_JTAG_API_V1
? 4 : 8);
1523 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
1524 if (h
->jtag_api
== STLINK_JTAG_API_V1
)
1525 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_APIV1_READREG
;
1527 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_APIV2_READREG
;
1528 h
->cmdbuf
[h
->cmdidx
++] = num
;
1530 if (h
->jtag_api
== STLINK_JTAG_API_V1
) {
1531 res
= stlink_usb_xfer(handle
, h
->databuf
, 4);
1532 if (res
!= ERROR_OK
)
1534 *val
= le_to_h_u32(h
->databuf
);
1537 res
= stlink_cmd_allow_retry(handle
, h
->databuf
, 8);
1538 if (res
!= ERROR_OK
)
1540 *val
= le_to_h_u32(h
->databuf
+ 4);
1546 static int stlink_usb_write_reg(void *handle
, int num
, uint32_t val
)
1548 struct stlink_usb_handle_s
*h
= handle
;
1550 assert(handle
!= NULL
);
1552 stlink_usb_init_buffer(handle
, h
->rx_ep
, 2);
1554 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
1555 if (h
->jtag_api
== STLINK_JTAG_API_V1
)
1556 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_APIV1_WRITEREG
;
1558 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_APIV2_WRITEREG
;
1559 h
->cmdbuf
[h
->cmdidx
++] = num
;
1560 h_u32_to_le(h
->cmdbuf
+h
->cmdidx
, val
);
1563 return stlink_cmd_allow_retry(handle
, h
->databuf
, 2);
1566 static int stlink_usb_get_rw_status(void *handle
)
1569 struct stlink_usb_handle_s
*h
= handle
;
1571 assert(handle
!= NULL
);
1573 if (h
->jtag_api
== STLINK_JTAG_API_V1
)
1576 stlink_usb_init_buffer(handle
, h
->rx_ep
, 2);
1578 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
1579 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_APIV2_GETLASTRWSTATUS
;
1581 res
= stlink_usb_xfer(handle
, h
->databuf
, 2);
1583 if (res
!= ERROR_OK
)
1586 return stlink_usb_error_check(h
);
1590 static int stlink_usb_read_mem8(void *handle
, uint32_t addr
, uint16_t len
,
1594 uint16_t read_len
= len
;
1595 struct stlink_usb_handle_s
*h
= handle
;
1597 assert(handle
!= NULL
);
1599 /* max 8bit read/write is 64bytes */
1600 if (len
> STLINK_MAX_RW8
) {
1601 LOG_DEBUG("max buffer length exceeded");
1605 stlink_usb_init_buffer(handle
, h
->rx_ep
, read_len
);
1607 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
1608 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_READMEM_8BIT
;
1609 h_u32_to_le(h
->cmdbuf
+h
->cmdidx
, addr
);
1611 h_u16_to_le(h
->cmdbuf
+h
->cmdidx
, len
);
1614 /* we need to fix read length for single bytes */
1618 res
= stlink_usb_xfer(handle
, h
->databuf
, read_len
);
1620 if (res
!= ERROR_OK
)
1623 memcpy(buffer
, h
->databuf
, len
);
1625 return stlink_usb_get_rw_status(handle
);
1629 static int stlink_usb_write_mem8(void *handle
, uint32_t addr
, uint16_t len
,
1630 const uint8_t *buffer
)
1633 struct stlink_usb_handle_s
*h
= handle
;
1635 assert(handle
!= NULL
);
1637 /* max 8bit read/write is 64bytes */
1638 if (len
> STLINK_MAX_RW8
) {
1639 LOG_DEBUG("max buffer length exceeded");
1643 stlink_usb_init_buffer(handle
, h
->tx_ep
, len
);
1645 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
1646 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_WRITEMEM_8BIT
;
1647 h_u32_to_le(h
->cmdbuf
+h
->cmdidx
, addr
);
1649 h_u16_to_le(h
->cmdbuf
+h
->cmdidx
, len
);
1652 res
= stlink_usb_xfer(handle
, buffer
, len
);
1654 if (res
!= ERROR_OK
)
1657 return stlink_usb_get_rw_status(handle
);
1661 static int stlink_usb_read_mem32(void *handle
, uint32_t addr
, uint16_t len
,
1665 struct stlink_usb_handle_s
*h
= handle
;
1667 assert(handle
!= NULL
);
1669 /* data must be a multiple of 4 and word aligned */
1670 if (len
% 4 || addr
% 4) {
1671 LOG_DEBUG("Invalid data alignment");
1672 return ERROR_TARGET_UNALIGNED_ACCESS
;
1675 stlink_usb_init_buffer(handle
, h
->rx_ep
, len
);
1677 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
1678 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_READMEM_32BIT
;
1679 h_u32_to_le(h
->cmdbuf
+h
->cmdidx
, addr
);
1681 h_u16_to_le(h
->cmdbuf
+h
->cmdidx
, len
);
1684 res
= stlink_usb_xfer(handle
, h
->databuf
, len
);
1686 if (res
!= ERROR_OK
)
1689 memcpy(buffer
, h
->databuf
, len
);
1691 return stlink_usb_get_rw_status(handle
);
1695 static int stlink_usb_write_mem32(void *handle
, uint32_t addr
, uint16_t len
,
1696 const uint8_t *buffer
)
1699 struct stlink_usb_handle_s
*h
= handle
;
1701 assert(handle
!= NULL
);
1703 /* data must be a multiple of 4 and word aligned */
1704 if (len
% 4 || addr
% 4) {
1705 LOG_DEBUG("Invalid data alignment");
1706 return ERROR_TARGET_UNALIGNED_ACCESS
;
1709 stlink_usb_init_buffer(handle
, h
->tx_ep
, len
);
1711 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_COMMAND
;
1712 h
->cmdbuf
[h
->cmdidx
++] = STLINK_DEBUG_WRITEMEM_32BIT
;
1713 h_u32_to_le(h
->cmdbuf
+h
->cmdidx
, addr
);
1715 h_u16_to_le(h
->cmdbuf
+h
->cmdidx
, len
);
1718 res
= stlink_usb_xfer(handle
, buffer
, len
);
1720 if (res
!= ERROR_OK
)
1723 return stlink_usb_get_rw_status(handle
);
1726 static uint32_t stlink_max_block_size(uint32_t tar_autoincr_block
, uint32_t address
)
1728 uint32_t max_tar_block
= (tar_autoincr_block
- ((tar_autoincr_block
- 1) & address
));
1729 if (max_tar_block
== 0)
1731 return max_tar_block
;
1734 static int stlink_usb_read_mem(void *handle
, uint32_t addr
, uint32_t size
,
1735 uint32_t count
, uint8_t *buffer
)
1737 int retval
= ERROR_OK
;
1738 uint32_t bytes_remaining
;
1740 struct stlink_usb_handle_s
*h
= handle
;
1742 /* calculate byte count */
1747 bytes_remaining
= (size
== 4) ? \
1748 stlink_max_block_size(h
->max_mem_packet
, addr
) : STLINK_MAX_RW8
;
1750 if (count
< bytes_remaining
)
1751 bytes_remaining
= count
;
1753 if (h
->transport
== HL_TRANSPORT_SWIM
) {
1754 retval
= stlink_swim_readbytes(handle
, addr
, bytes_remaining
, buffer
);
1755 if (retval
!= ERROR_OK
)
1758 /* the stlink only supports 8/32bit memory read/writes
1759 * honour 32bit, all others will be handled as 8bit access */
1762 /* When in jtag mode the stlink uses the auto-increment functinality.
1763 * However it expects us to pass the data correctly, this includes
1764 * alignment and any page boundaries. We already do this as part of the
1765 * adi_v5 implementation, but the stlink is a hla adapter and so this
1766 * needs implementiong manually.
1767 * currently this only affects jtag mode, according to ST they do single
1768 * access in SWD mode - but this may change and so we do it for both modes */
1770 /* we first need to check for any unaligned bytes */
1773 uint32_t head_bytes
= 4 - (addr
% 4);
1774 retval
= stlink_usb_read_mem8(handle
, addr
, head_bytes
, buffer
);
1775 if (retval
== ERROR_WAIT
&& retries
< MAX_WAIT_RETRIES
) {
1776 usleep((1<<retries
++) * 1000);
1779 if (retval
!= ERROR_OK
)
1781 buffer
+= head_bytes
;
1783 count
-= head_bytes
;
1784 bytes_remaining
-= head_bytes
;
1787 if (bytes_remaining
% 4)
1788 retval
= stlink_usb_read_mem(handle
, addr
, 1, bytes_remaining
, buffer
);
1790 retval
= stlink_usb_read_mem32(handle
, addr
, bytes_remaining
, buffer
);
1792 retval
= stlink_usb_read_mem8(handle
, addr
, bytes_remaining
, buffer
);
1794 if (retval
== ERROR_WAIT
&& retries
< MAX_WAIT_RETRIES
) {
1795 usleep((1<<retries
++) * 1000);
1798 if (retval
!= ERROR_OK
)
1801 buffer
+= bytes_remaining
;
1802 addr
+= bytes_remaining
;
1803 count
-= bytes_remaining
;
1809 static int stlink_usb_write_mem(void *handle
, uint32_t addr
, uint32_t size
,
1810 uint32_t count
, const uint8_t *buffer
)
1812 int retval
= ERROR_OK
;
1813 uint32_t bytes_remaining
;
1815 struct stlink_usb_handle_s
*h
= handle
;
1817 /* calculate byte count */
1822 bytes_remaining
= (size
== 4) ? \
1823 stlink_max_block_size(h
->max_mem_packet
, addr
) : STLINK_MAX_RW8
;
1825 if (count
< bytes_remaining
)
1826 bytes_remaining
= count
;
1828 if (h
->transport
== HL_TRANSPORT_SWIM
) {
1829 retval
= stlink_swim_writebytes(handle
, addr
, bytes_remaining
, buffer
);
1830 if (retval
!= ERROR_OK
)
1833 /* the stlink only supports 8/32bit memory read/writes
1834 * honour 32bit, all others will be handled as 8bit access */
1837 /* When in jtag mode the stlink uses the auto-increment functinality.
1838 * However it expects us to pass the data correctly, this includes
1839 * alignment and any page boundaries. We already do this as part of the
1840 * adi_v5 implementation, but the stlink is a hla adapter and so this
1841 * needs implementiong manually.
1842 * currently this only affects jtag mode, according to ST they do single
1843 * access in SWD mode - but this may change and so we do it for both modes */
1845 /* we first need to check for any unaligned bytes */
1848 uint32_t head_bytes
= 4 - (addr
% 4);
1849 retval
= stlink_usb_write_mem8(handle
, addr
, head_bytes
, buffer
);
1850 if (retval
== ERROR_WAIT
&& retries
< MAX_WAIT_RETRIES
) {
1851 usleep((1<<retries
++) * 1000);
1854 if (retval
!= ERROR_OK
)
1856 buffer
+= head_bytes
;
1858 count
-= head_bytes
;
1859 bytes_remaining
-= head_bytes
;
1862 if (bytes_remaining
% 4)
1863 retval
= stlink_usb_write_mem(handle
, addr
, 1, bytes_remaining
, buffer
);
1865 retval
= stlink_usb_write_mem32(handle
, addr
, bytes_remaining
, buffer
);
1868 retval
= stlink_usb_write_mem8(handle
, addr
, bytes_remaining
, buffer
);
1869 if (retval
== ERROR_WAIT
&& retries
< MAX_WAIT_RETRIES
) {
1870 usleep((1<<retries
++) * 1000);
1873 if (retval
!= ERROR_OK
)
1876 buffer
+= bytes_remaining
;
1877 addr
+= bytes_remaining
;
1878 count
-= bytes_remaining
;
1885 static int stlink_usb_override_target(const char *targetname
)
1887 return !strcmp(targetname
, "cortex_m");
1890 static int stlink_speed(void *handle
, int khz
, bool query
)
1893 int speed_index
= -1;
1894 int speed_diff
= INT_MAX
;
1895 struct stlink_usb_handle_s
*h
= handle
;
1897 if (h
&& (h
->transport
== HL_TRANSPORT_SWIM
)) {
1899 we dont care what the khz rate is
1900 we only have low and high speed...
1901 before changing speed the SWIM_CSR HS bit
1905 stlink_swim_speed(handle
, 0);
1907 stlink_swim_speed(handle
, 1);
1911 /* only supported by stlink/v2 and for firmware >= 22 */
1912 if (h
&& (h
->version
.stlink
== 1 || h
->version
.jtag
< 22))
1915 for (i
= 0; i
< ARRAY_SIZE(stlink_khz_to_speed_map
); i
++) {
1916 if (khz
== stlink_khz_to_speed_map
[i
].speed
) {
1920 int current_diff
= khz
- stlink_khz_to_speed_map
[i
].speed
;
1921 /* get abs value for comparison */
1922 current_diff
= (current_diff
> 0) ? current_diff
: -current_diff
;
1923 if ((current_diff
< speed_diff
) && khz
>= stlink_khz_to_speed_map
[i
].speed
) {
1924 speed_diff
= current_diff
;
1932 if (speed_index
== -1) {
1933 /* this will only be here if we cannot match the slow speed.
1934 * use the slowest speed we support.*/
1935 speed_index
= ARRAY_SIZE(stlink_khz_to_speed_map
) - 1;
1937 } else if (i
== ARRAY_SIZE(stlink_khz_to_speed_map
))
1940 if (!match
&& query
) {
1941 LOG_INFO("Unable to match requested speed %d kHz, using %d kHz", \
1942 khz
, stlink_khz_to_speed_map
[speed_index
].speed
);
1946 int result
= stlink_usb_set_swdclk(h
, stlink_khz_to_speed_map
[speed_index
].speed_divisor
);
1947 if (result
!= ERROR_OK
) {
1948 LOG_ERROR("Unable to set adapter speed");
1953 return stlink_khz_to_speed_map
[speed_index
].speed
;
1957 static int stlink_usb_close(void *handle
)
1961 enum stlink_mode emode
;
1962 struct stlink_usb_handle_s
*h
= handle
;
1965 res
= stlink_usb_current_mode(handle
, &mode
);
1968 /* do not exit if return code != ERROR_OK,
1969 it prevents us from closing jtag_libusb */
1971 if (res
== ERROR_OK
) {
1972 /* try to exit current mode */
1974 case STLINK_DEV_DFU_MODE
:
1975 emode
= STLINK_MODE_DFU
;
1977 case STLINK_DEV_DEBUG_MODE
:
1978 emode
= STLINK_MODE_DEBUG_SWD
;
1980 case STLINK_DEV_SWIM_MODE
:
1981 emode
= STLINK_MODE_DEBUG_SWIM
;
1983 case STLINK_DEV_BOOTLOADER_MODE
:
1984 case STLINK_DEV_MASS_MODE
:
1986 emode
= STLINK_MODE_UNKNOWN
;
1990 if (emode
!= STLINK_MODE_UNKNOWN
)
1991 stlink_usb_mode_leave(handle
, emode
);
1992 /* do not check return code, it prevent
1993 us from closing jtag_libusb */
1997 jtag_libusb_close(h
->fd
);
2005 static int stlink_usb_open(struct hl_interface_param_s
*param
, void **fd
)
2007 int err
, retry_count
= 1;
2008 struct stlink_usb_handle_s
*h
;
2009 enum stlink_jtag_api_version api
;
2011 LOG_DEBUG("stlink_usb_open");
2013 h
= calloc(1, sizeof(struct stlink_usb_handle_s
));
2016 LOG_DEBUG("malloc failed");
2020 h
->transport
= param
->transport
;
2022 for (unsigned i
= 0; param
->vid
[i
]; i
++) {
2023 LOG_DEBUG("transport: %d vid: 0x%04x pid: 0x%04x serial: %s",
2024 param
->transport
, param
->vid
[i
], param
->pid
[i
],
2025 param
->serial
? param
->serial
: "");
2029 On certain host USB configurations(e.g. MacBook Air)
2030 STLINKv2 dongle seems to have its FW in a funky state if,
2031 after plugging it in, you try to use openocd with it more
2032 then once (by launching and closing openocd). In cases like
2033 that initial attempt to read the FW info via
2034 stlink_usb_version will fail and the device has to be reset
2035 in order to become operational.
2038 if (jtag_libusb_open(param
->vid
, param
->pid
, param
->serial
, &h
->fd
) != ERROR_OK
) {
2039 LOG_ERROR("open failed");
2043 jtag_libusb_set_configuration(h
->fd
, 0);
2045 if (jtag_libusb_claim_interface(h
->fd
, 0) != ERROR_OK
) {
2046 LOG_DEBUG("claim interface failed");
2050 /* RX EP is common for all versions */
2051 h
->rx_ep
= STLINK_RX_EP
;
2054 if (jtag_libusb_get_pid(jtag_libusb_get_device(h
->fd
), &pid
) != ERROR_OK
) {
2055 LOG_DEBUG("libusb_get_pid failed");
2059 /* wrap version for first read */
2062 h
->version
.stlink
= 1;
2063 h
->tx_ep
= STLINK_TX_EP
;
2064 h
->trace_ep
= STLINK_TRACE_EP
;
2066 case STLINK_V2_1_PID
:
2067 case STLINK_V2_1_NO_MSD_PID
:
2068 h
->version
.stlink
= 2;
2069 h
->tx_ep
= STLINK_V2_1_TX_EP
;
2070 h
->trace_ep
= STLINK_V2_1_TRACE_EP
;
2073 /* fall through - we assume V2 to be the default version*/
2075 h
->version
.stlink
= 2;
2076 h
->tx_ep
= STLINK_TX_EP
;
2077 h
->trace_ep
= STLINK_TRACE_EP
;
2081 /* get the device version */
2082 err
= stlink_usb_version(h
);
2084 if (err
== ERROR_OK
) {
2086 } else if (h
->version
.stlink
== 1 ||
2088 LOG_ERROR("read version failed");
2091 err
= jtag_libusb_release_interface(h
->fd
, 0);
2092 if (err
!= ERROR_OK
) {
2093 LOG_ERROR("release interface failed");
2097 err
= jtag_libusb_reset_device(h
->fd
);
2098 if (err
!= ERROR_OK
) {
2099 LOG_ERROR("reset device failed");
2103 jtag_libusb_close(h
->fd
);
2105 Give the device one second to settle down and
2108 usleep(1 * 1000 * 1000);
2113 /* check if mode is supported */
2116 switch (h
->transport
) {
2117 case HL_TRANSPORT_SWD
:
2118 case HL_TRANSPORT_JTAG
:
2119 if (h
->version
.jtag
== 0)
2122 case HL_TRANSPORT_SWIM
:
2123 if (h
->version
.swim
== 0)
2131 if (err
!= ERROR_OK
) {
2132 LOG_ERROR("mode (transport) not supported by device");
2136 api
= h
->version
.jtag_api_max
;
2138 LOG_INFO("using stlink api v%d", api
);
2140 /* set the used jtag api, this will default to the newest supported version */
2143 /* initialize the debug hardware */
2144 err
= stlink_usb_init_mode(h
, param
->connect_under_reset
);
2146 if (err
!= ERROR_OK
) {
2147 LOG_ERROR("init mode failed (unable to connect to the target)");
2151 if (h
->transport
== HL_TRANSPORT_SWIM
) {
2152 err
= stlink_swim_enter(h
);
2153 if (err
!= ERROR_OK
) {
2154 LOG_ERROR("stlink_swim_enter_failed (unable to connect to the target)");
2158 h
->max_mem_packet
= STLINK_DATA_SIZE
;
2162 /* clock speed only supported by stlink/v2 and for firmware >= 22 */
2163 if (h
->version
.stlink
>= 2 && h
->version
.jtag
>= 22) {
2164 LOG_DEBUG("Supported clock speeds are:");
2166 for (unsigned i
= 0; i
< ARRAY_SIZE(stlink_khz_to_speed_map
); i
++)
2167 LOG_DEBUG("%d kHz", stlink_khz_to_speed_map
[i
].speed
);
2169 stlink_speed(h
, param
->initial_interface_speed
, false);
2172 /* get cpuid, so we can determine the max page size
2173 * start with a safe default */
2174 h
->max_mem_packet
= (1 << 10);
2177 err
= stlink_usb_read_mem32(h
, CPUID
, 4, buffer
);
2178 if (err
== ERROR_OK
) {
2179 uint32_t cpuid
= le_to_h_u32(buffer
);
2180 int i
= (cpuid
>> 4) & 0xf;
2181 if (i
== 4 || i
== 3) {
2182 /* Cortex-M3/M4 has 4096 bytes autoincrement range */
2183 h
->max_mem_packet
= (1 << 12);
2187 LOG_DEBUG("Using TAR autoincrement: %" PRIu32
, h
->max_mem_packet
);
2194 stlink_usb_close(h
);
2199 int stlink_config_trace(void *handle
, bool enabled
, enum tpiu_pin_protocol pin_protocol
,
2200 uint32_t port_size
, unsigned int *trace_freq
)
2202 struct stlink_usb_handle_s
*h
= handle
;
2204 if (enabled
&& (h
->jtag_api
< 2 ||
2205 pin_protocol
!= TPIU_PIN_PROTOCOL_ASYNC_UART
)) {
2206 LOG_ERROR("The attached ST-LINK version doesn't support this trace mode");
2211 stlink_usb_trace_disable(h
);
2215 if (*trace_freq
> STLINK_TRACE_MAX_HZ
) {
2216 LOG_ERROR("ST-LINK doesn't support SWO frequency higher than %u",
2217 STLINK_TRACE_MAX_HZ
);
2221 stlink_usb_trace_disable(h
);
2224 *trace_freq
= STLINK_TRACE_MAX_HZ
;
2225 h
->trace
.source_hz
= *trace_freq
;
2227 return stlink_usb_trace_enable(h
);
2231 struct hl_layout_api_s stlink_usb_layout_api
= {
2233 .open
= stlink_usb_open
,
2235 .close
= stlink_usb_close
,
2237 .idcode
= stlink_usb_idcode
,
2239 .state
= stlink_usb_state
,
2241 .reset
= stlink_usb_reset
,
2243 .assert_srst
= stlink_usb_assert_srst
,
2245 .run
= stlink_usb_run
,
2247 .halt
= stlink_usb_halt
,
2249 .step
= stlink_usb_step
,
2251 .read_regs
= stlink_usb_read_regs
,
2253 .read_reg
= stlink_usb_read_reg
,
2255 .write_reg
= stlink_usb_write_reg
,
2257 .read_mem
= stlink_usb_read_mem
,
2259 .write_mem
= stlink_usb_write_mem
,
2261 .write_debug_reg
= stlink_usb_write_debug_reg
,
2263 .override_target
= stlink_usb_override_target
,
2265 .speed
= stlink_speed
,
2267 .config_trace
= stlink_config_trace
,
2269 .poll_trace
= stlink_usb_trace_read
,
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