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 /** jtag api version supported */
91 enum stlink_jtag_api_version jtag_api;
92 /** one bit for each feature supported. See macros STLINK_F_* */
97 struct stlink_usb_handle_s {
99 struct jtag_libusb_device_handle *fd;
101 struct libusb_transfer *trans;
109 uint8_t cmdbuf[STLINK_SG_SIZE];
115 uint8_t databuf[STLINK_DATA_SIZE];
117 uint32_t max_mem_packet;
119 enum hl_transports transport;
121 struct stlink_usb_version version;
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_GETSTATUS 0x01
209 #define STLINK_DEBUG_FORCEDEBUG 0x02
210 #define STLINK_DEBUG_APIV1_RESETSYS 0x03
211 #define STLINK_DEBUG_APIV1_READALLREGS 0x04
212 #define STLINK_DEBUG_APIV1_READREG 0x05
213 #define STLINK_DEBUG_APIV1_WRITEREG 0x06
214 #define STLINK_DEBUG_READMEM_32BIT 0x07
215 #define STLINK_DEBUG_WRITEMEM_32BIT 0x08
216 #define STLINK_DEBUG_RUNCORE 0x09
217 #define STLINK_DEBUG_STEPCORE 0x0a
218 #define STLINK_DEBUG_APIV1_SETFP 0x0b
219 #define STLINK_DEBUG_READMEM_8BIT 0x0c
220 #define STLINK_DEBUG_WRITEMEM_8BIT 0x0d
221 #define STLINK_DEBUG_APIV1_CLEARFP 0x0e
222 #define STLINK_DEBUG_APIV1_WRITEDEBUGREG 0x0f
223 #define STLINK_DEBUG_APIV1_SETWATCHPOINT 0x10
225 #define STLINK_DEBUG_ENTER_JTAG_RESET 0x00
226 #define STLINK_DEBUG_ENTER_SWD_NO_RESET 0xa3
227 #define STLINK_DEBUG_ENTER_JTAG_NO_RESET 0xa4
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_GETLASTRWSTATUS2 0x3E
247 #define STLINK_DEBUG_APIV2_START_TRACE_RX 0x40
248 #define STLINK_DEBUG_APIV2_STOP_TRACE_RX 0x41
249 #define STLINK_DEBUG_APIV2_GET_TRACE_NB 0x42
250 #define STLINK_DEBUG_APIV2_SWD_SET_FREQ 0x43
251 #define STLINK_DEBUG_APIV2_JTAG_SET_FREQ 0x44
253 #define STLINK_DEBUG_APIV2_READMEM_16BIT 0x47
254 #define STLINK_DEBUG_APIV2_WRITEMEM_16BIT 0x48
256 #define STLINK_DEBUG_APIV2_DRIVE_NRST_LOW 0x00
257 #define STLINK_DEBUG_APIV2_DRIVE_NRST_HIGH 0x01
258 #define STLINK_DEBUG_APIV2_DRIVE_NRST_PULSE 0x02
260 #define STLINK_TRACE_SIZE 4096
261 #define STLINK_TRACE_MAX_HZ 2000000
265 STLINK_MODE_UNKNOWN = 0,
268 STLINK_MODE_DEBUG_JTAG,
269 STLINK_MODE_DEBUG_SWD,
270 STLINK_MODE_DEBUG_SWIM
273 #define REQUEST_SENSE 0x03
274 #define REQUEST_SENSE_LENGTH 18
277 * Map the relevant features, quirks and workaround for specific firmware
280 #define STLINK_F_HAS_TRACE (1UL << 0)
281 #define STLINK_F_HAS_SWD_SET_FREQ (1UL << 1)
282 #define STLINK_F_HAS_JTAG_SET_FREQ (1UL << 2)
283 #define STLINK_F_HAS_MEM_16BIT (1UL << 3)
284 #define STLINK_F_HAS_GETLASTRWSTATUS2 (1UL << 4)
287 #define STLINK_F_HAS_TARGET_VOLT STLINK_F_HAS_TRACE
294 /* SWD clock speed */
295 static const struct speed_map stlink_khz_to_speed_map_swd[] = {
297 {1800, 1}, /* default */
310 /* JTAG clock speed */
311 static const struct speed_map stlink_khz_to_speed_map_jtag[] = {
316 {1125, 32}, /* default */
322 static void stlink_usb_init_buffer(void *handle, uint8_t direction, uint32_t size);
323 static int stlink_swim_status(void *handle);
326 static int stlink_usb_xfer_v1_get_status(void *handle)
328 struct stlink_usb_handle_s *h = handle;
330 assert(handle != NULL);
333 memset(h->cmdbuf, 0, STLINK_SG_SIZE);
335 if (jtag_libusb_bulk_read(h->fd, h->rx_ep, (char *)h->cmdbuf,
336 13, STLINK_READ_TIMEOUT) != 13)
341 t1 = buf_get_u32(h->cmdbuf, 0, 32);
344 if (t1 != 0x53425355)
352 if (h->cmdbuf[12] != 0)
359 static int stlink_usb_xfer_rw(void *handle, int cmdsize, const uint8_t *buf, int size)
361 struct stlink_usb_handle_s *h = handle;
363 assert(handle != NULL);
365 if (jtag_libusb_bulk_write(h->fd, h->tx_ep, (char *)h->cmdbuf, cmdsize,
366 STLINK_WRITE_TIMEOUT) != cmdsize) {
370 if (h->direction == h->tx_ep && size) {
371 if (jtag_libusb_bulk_write(h->fd, h->tx_ep, (char *)buf,
372 size, STLINK_WRITE_TIMEOUT) != size) {
373 LOG_DEBUG("bulk write failed");
376 } else if (h->direction == h->rx_ep && size) {
377 if (jtag_libusb_bulk_read(h->fd, h->rx_ep, (char *)buf,
378 size, STLINK_READ_TIMEOUT) != size) {
379 LOG_DEBUG("bulk read failed");
388 static int stlink_usb_xfer_v1_get_sense(void *handle)
391 struct stlink_usb_handle_s *h = handle;
393 assert(handle != NULL);
395 stlink_usb_init_buffer(handle, h->rx_ep, 16);
397 h->cmdbuf[h->cmdidx++] = REQUEST_SENSE;
398 h->cmdbuf[h->cmdidx++] = 0;
399 h->cmdbuf[h->cmdidx++] = 0;
400 h->cmdbuf[h->cmdidx++] = 0;
401 h->cmdbuf[h->cmdidx++] = REQUEST_SENSE_LENGTH;
403 res = stlink_usb_xfer_rw(handle, REQUEST_SENSE_LENGTH, h->databuf, 16);
408 if (stlink_usb_xfer_v1_get_status(handle) != ERROR_OK)
415 transfers block in cmdbuf
416 <size> indicates number of bytes in the following
419 static int stlink_usb_xfer(void *handle, const uint8_t *buf, int size)
421 int err, cmdsize = STLINK_CMD_SIZE_V2;
422 struct stlink_usb_handle_s *h = handle;
424 assert(handle != NULL);
426 if (h->version.stlink == 1) {
427 cmdsize = STLINK_SG_SIZE;
428 /* put length in bCBWCBLength */
429 h->cmdbuf[14] = h->cmdidx-15;
432 err = stlink_usb_xfer_rw(handle, cmdsize, buf, size);
437 if (h->version.stlink == 1) {
438 if (stlink_usb_xfer_v1_get_status(handle) != ERROR_OK) {
439 /* check csw status */
440 if (h->cmdbuf[12] == 1) {
441 LOG_DEBUG("get sense");
442 if (stlink_usb_xfer_v1_get_sense(handle) != ERROR_OK)
453 Converts an STLINK status code held in the first byte of a response
454 to an openocd error, logs any error/wait status as debug output.
456 static int stlink_usb_error_check(void *handle)
458 struct stlink_usb_handle_s *h = handle;
460 assert(handle != NULL);
462 if (h->transport == HL_TRANSPORT_SWIM) {
463 switch (h->databuf[0]) {
464 case STLINK_SWIM_ERR_OK:
466 case STLINK_SWIM_BUSY:
469 LOG_DEBUG("unknown/unexpected STLINK status code 0x%x", h->databuf[0]);
474 /* TODO: no error checking yet on api V1 */
475 if (h->version.jtag_api == STLINK_JTAG_API_V1)
476 h->databuf[0] = STLINK_DEBUG_ERR_OK;
478 switch (h->databuf[0]) {
479 case STLINK_DEBUG_ERR_OK:
481 case STLINK_DEBUG_ERR_FAULT:
482 LOG_DEBUG("SWD fault response (0x%x)", STLINK_DEBUG_ERR_FAULT);
484 case STLINK_SWD_AP_WAIT:
485 LOG_DEBUG("wait status SWD_AP_WAIT (0x%x)", STLINK_SWD_AP_WAIT);
487 case STLINK_SWD_DP_WAIT:
488 LOG_DEBUG("wait status SWD_DP_WAIT (0x%x)", STLINK_SWD_DP_WAIT);
490 case STLINK_JTAG_WRITE_ERROR:
491 LOG_DEBUG("Write error");
493 case STLINK_JTAG_WRITE_VERIF_ERROR:
494 LOG_DEBUG("Write verify error, ignoring");
496 case STLINK_SWD_AP_FAULT:
497 /* git://git.ac6.fr/openocd commit 657e3e885b9ee10
498 * returns ERROR_OK with the comment:
499 * Change in error status when reading outside RAM.
500 * This fix allows CDT plugin to visualize memory.
502 LOG_DEBUG("STLINK_SWD_AP_FAULT");
504 case STLINK_SWD_AP_ERROR:
505 LOG_DEBUG("STLINK_SWD_AP_ERROR");
507 case STLINK_SWD_AP_PARITY_ERROR:
508 LOG_DEBUG("STLINK_SWD_AP_PARITY_ERROR");
510 case STLINK_SWD_DP_FAULT:
511 LOG_DEBUG("STLINK_SWD_DP_FAULT");
513 case STLINK_SWD_DP_ERROR:
514 LOG_DEBUG("STLINK_SWD_DP_ERROR");
516 case STLINK_SWD_DP_PARITY_ERROR:
517 LOG_DEBUG("STLINK_SWD_DP_PARITY_ERROR");
519 case STLINK_SWD_AP_WDATA_ERROR:
520 LOG_DEBUG("STLINK_SWD_AP_WDATA_ERROR");
522 case STLINK_SWD_AP_STICKY_ERROR:
523 LOG_DEBUG("STLINK_SWD_AP_STICKY_ERROR");
525 case STLINK_SWD_AP_STICKYORUN_ERROR:
526 LOG_DEBUG("STLINK_SWD_AP_STICKYORUN_ERROR");
529 LOG_DEBUG("unknown/unexpected STLINK status code 0x%x", h->databuf[0]);
535 /** Issue an STLINK command via USB transfer, with retries on any wait status responses.
537 Works for commands where the STLINK_DEBUG status is returned in the first
538 byte of the response packet. For SWIM a SWIM_READSTATUS is requested instead.
540 Returns an openocd result code.
542 static int stlink_cmd_allow_retry(void *handle, const uint8_t *buf, int size)
546 struct stlink_usb_handle_s *h = handle;
549 if ((h->transport != HL_TRANSPORT_SWIM) || !retries) {
550 res = stlink_usb_xfer(handle, buf, size);
555 if (h->transport == HL_TRANSPORT_SWIM) {
556 res = stlink_swim_status(handle);
561 res = stlink_usb_error_check(handle);
562 if (res == ERROR_WAIT && retries < MAX_WAIT_RETRIES) {
563 usleep((1<<retries++) * 1000);
571 static int stlink_usb_read_trace(void *handle, const uint8_t *buf, int size)
573 struct stlink_usb_handle_s *h = handle;
575 assert(handle != NULL);
577 assert(h->version.flags & STLINK_F_HAS_TRACE);
579 if (jtag_libusb_bulk_read(h->fd, h->trace_ep, (char *)buf,
580 size, STLINK_READ_TIMEOUT) != size) {
581 LOG_ERROR("bulk trace read failed");
589 this function writes transfer length in
590 the right place in the cb
592 static void stlink_usb_set_cbw_transfer_datalength(void *handle, uint32_t size)
594 struct stlink_usb_handle_s *h = handle;
596 buf_set_u32(h->cmdbuf+8, 0, 32, size);
599 static void stlink_usb_xfer_v1_create_cmd(void *handle, uint8_t direction, uint32_t size)
601 struct stlink_usb_handle_s *h = handle;
603 /* fill the send buffer */
604 strcpy((char *)h->cmdbuf, "USBC");
606 /* csw tag not used */
607 buf_set_u32(h->cmdbuf+h->cmdidx, 0, 32, 0);
609 /* cbw data transfer length (in the following data phase in or out) */
610 buf_set_u32(h->cmdbuf+h->cmdidx, 0, 32, size);
613 h->cmdbuf[h->cmdidx++] = (direction == h->rx_ep ? ENDPOINT_IN : ENDPOINT_OUT);
614 h->cmdbuf[h->cmdidx++] = 0; /* lun */
615 /* cdb clength (is filled in at xfer) */
616 h->cmdbuf[h->cmdidx++] = 0;
620 static void stlink_usb_init_buffer(void *handle, uint8_t direction, uint32_t size)
622 struct stlink_usb_handle_s *h = handle;
624 h->direction = direction;
628 memset(h->cmdbuf, 0, STLINK_SG_SIZE);
629 memset(h->databuf, 0, STLINK_DATA_SIZE);
631 if (h->version.stlink == 1)
632 stlink_usb_xfer_v1_create_cmd(handle, direction, size);
636 static int stlink_usb_version(void *handle)
641 uint8_t v, x, y, jtag, swim, msd;
642 char v_str[4 * (1 + 3) + 1]; /* VvJjMmSs */
644 struct stlink_usb_handle_s *h = handle;
646 assert(handle != NULL);
648 stlink_usb_init_buffer(handle, h->rx_ep, 6);
650 h->cmdbuf[h->cmdidx++] = STLINK_GET_VERSION;
652 res = stlink_usb_xfer(handle, h->databuf, 6);
657 version = be_to_h_u16(h->databuf);
658 v = (version >> 12) & 0x0f;
659 x = (version >> 6) & 0x3f;
662 h->vid = le_to_h_u16(h->databuf + 2);
663 h->pid = le_to_h_u16(h->databuf + 4);
666 case STLINK_V2_1_PID:
667 case STLINK_V2_1_NO_MSD_PID:
668 /* JxMy : STM32 V2.1 - JTAG/SWD only */
680 h->version.stlink = v;
681 h->version.jtag = jtag;
682 h->version.swim = swim;
685 switch (h->version.stlink) {
687 /* ST-LINK/V1 from J11 switch to api-v2 (and support SWD) */
688 if (h->version.jtag >= 11)
689 h->version.jtag_api = STLINK_JTAG_API_V2;
691 h->version.jtag_api = STLINK_JTAG_API_V1;
695 /* all ST-LINK/V2 and ST-Link/V2.1 use api-v2 */
696 h->version.jtag_api = STLINK_JTAG_API_V2;
698 /* API for trace from J13 */
699 /* API for target voltage from J13 */
700 if (h->version.jtag >= 13)
701 flags |= STLINK_F_HAS_TRACE;
703 /* preferred API to get last R/W status from J15 */
704 if (h->version.jtag >= 15)
705 flags |= STLINK_F_HAS_GETLASTRWSTATUS2;
707 /* API to set SWD frequency from J22 */
708 if (h->version.jtag >= 22)
709 flags |= STLINK_F_HAS_SWD_SET_FREQ;
711 /* API to set JTAG frequency from J24 */
712 if (h->version.jtag >= 24)
713 flags |= STLINK_F_HAS_JTAG_SET_FREQ;
715 /* API to read/write memory at 16 bit from J26 */
716 if (h->version.jtag >= 26)
717 flags |= STLINK_F_HAS_MEM_16BIT;
723 h->version.flags = flags;
726 p += sprintf(p, "V%d", v);
728 p += sprintf(p, "J%d", jtag);
730 p += sprintf(p, "M%d", msd);
732 p += sprintf(p, "S%d", swim);
734 LOG_INFO("STLINK %s (API v%d) VID:PID %04X:%04X",
743 static int stlink_usb_check_voltage(void *handle, float *target_voltage)
745 struct stlink_usb_handle_s *h = handle;
746 uint32_t adc_results[2];
748 /* no error message, simply quit with error */
749 if (!(h->version.flags & STLINK_F_HAS_TARGET_VOLT))
750 return ERROR_COMMAND_NOTFOUND;
752 stlink_usb_init_buffer(handle, h->rx_ep, 8);
754 h->cmdbuf[h->cmdidx++] = STLINK_GET_TARGET_VOLTAGE;
756 int result = stlink_usb_xfer(handle, h->databuf, 8);
758 if (result != ERROR_OK)
762 adc_results[0] = le_to_h_u32(h->databuf);
763 adc_results[1] = le_to_h_u32(h->databuf + 4);
768 *target_voltage = 2 * ((float)adc_results[1]) * (float)(1.2 / adc_results[0]);
770 LOG_INFO("Target voltage: %f", (double)*target_voltage);
775 static int stlink_usb_set_swdclk(void *handle, uint16_t clk_divisor)
777 struct stlink_usb_handle_s *h = handle;
779 assert(handle != NULL);
781 if (!(h->version.flags & STLINK_F_HAS_SWD_SET_FREQ))
782 return ERROR_COMMAND_NOTFOUND;
784 stlink_usb_init_buffer(handle, h->rx_ep, 2);
786 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
787 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_SWD_SET_FREQ;
788 h_u16_to_le(h->cmdbuf+h->cmdidx, clk_divisor);
791 int result = stlink_cmd_allow_retry(handle, h->databuf, 2);
793 if (result != ERROR_OK)
799 static int stlink_usb_set_jtagclk(void *handle, uint16_t clk_divisor)
801 struct stlink_usb_handle_s *h = handle;
803 assert(handle != NULL);
805 if (!(h->version.flags & STLINK_F_HAS_JTAG_SET_FREQ))
806 return ERROR_COMMAND_NOTFOUND;
808 stlink_usb_init_buffer(handle, h->rx_ep, 2);
810 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
811 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_JTAG_SET_FREQ;
812 h_u16_to_le(h->cmdbuf+h->cmdidx, clk_divisor);
815 int result = stlink_cmd_allow_retry(handle, h->databuf, 2);
817 if (result != ERROR_OK)
824 static int stlink_usb_current_mode(void *handle, uint8_t *mode)
827 struct stlink_usb_handle_s *h = handle;
829 assert(handle != NULL);
831 stlink_usb_init_buffer(handle, h->rx_ep, 2);
833 h->cmdbuf[h->cmdidx++] = STLINK_GET_CURRENT_MODE;
835 res = stlink_usb_xfer(handle, h->databuf, 2);
840 *mode = h->databuf[0];
846 static int stlink_usb_mode_enter(void *handle, enum stlink_mode type)
849 struct stlink_usb_handle_s *h = handle;
851 assert(handle != NULL);
853 /* on api V2 we are able the read the latest command
855 * TODO: we need the test on api V1 too
857 if (h->version.jtag_api == STLINK_JTAG_API_V2)
860 stlink_usb_init_buffer(handle, h->rx_ep, rx_size);
863 case STLINK_MODE_DEBUG_JTAG:
864 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
865 if (h->version.jtag_api == STLINK_JTAG_API_V1)
866 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_ENTER;
868 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_ENTER;
869 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_ENTER_JTAG_NO_RESET;
871 case STLINK_MODE_DEBUG_SWD:
872 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
873 if (h->version.jtag_api == STLINK_JTAG_API_V1)
874 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_ENTER;
876 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_ENTER;
877 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_ENTER_SWD_NO_RESET;
879 case STLINK_MODE_DEBUG_SWIM:
880 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
881 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_ENTER;
882 /* no answer for this function... */
885 case STLINK_MODE_DFU:
886 case STLINK_MODE_MASS:
891 return stlink_cmd_allow_retry(handle, h->databuf, rx_size);
895 static int stlink_usb_mode_leave(void *handle, enum stlink_mode type)
898 struct stlink_usb_handle_s *h = handle;
900 assert(handle != NULL);
902 stlink_usb_init_buffer(handle, STLINK_NULL_EP, 0);
905 case STLINK_MODE_DEBUG_JTAG:
906 case STLINK_MODE_DEBUG_SWD:
907 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
908 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_EXIT;
910 case STLINK_MODE_DEBUG_SWIM:
911 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
912 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_EXIT;
914 case STLINK_MODE_DFU:
915 h->cmdbuf[h->cmdidx++] = STLINK_DFU_COMMAND;
916 h->cmdbuf[h->cmdidx++] = STLINK_DFU_EXIT;
918 case STLINK_MODE_MASS:
923 res = stlink_usb_xfer(handle, 0, 0);
931 static int stlink_usb_assert_srst(void *handle, int srst);
933 static enum stlink_mode stlink_get_mode(enum hl_transports t)
936 case HL_TRANSPORT_SWD:
937 return STLINK_MODE_DEBUG_SWD;
938 case HL_TRANSPORT_JTAG:
939 return STLINK_MODE_DEBUG_JTAG;
940 case HL_TRANSPORT_SWIM:
941 return STLINK_MODE_DEBUG_SWIM;
943 return STLINK_MODE_UNKNOWN;
948 static int stlink_usb_init_mode(void *handle, bool connect_under_reset)
952 enum stlink_mode emode;
953 struct stlink_usb_handle_s *h = handle;
955 assert(handle != NULL);
957 res = stlink_usb_current_mode(handle, &mode);
962 LOG_DEBUG("MODE: 0x%02X", mode);
964 /* try to exit current mode */
966 case STLINK_DEV_DFU_MODE:
967 emode = STLINK_MODE_DFU;
969 case STLINK_DEV_DEBUG_MODE:
970 emode = STLINK_MODE_DEBUG_SWD;
972 case STLINK_DEV_SWIM_MODE:
973 emode = STLINK_MODE_DEBUG_SWIM;
975 case STLINK_DEV_BOOTLOADER_MODE:
976 case STLINK_DEV_MASS_MODE:
978 emode = STLINK_MODE_UNKNOWN;
982 if (emode != STLINK_MODE_UNKNOWN) {
983 res = stlink_usb_mode_leave(handle, emode);
989 res = stlink_usb_current_mode(handle, &mode);
994 /* we check the target voltage here as an aid to debugging connection problems.
995 * the stlink requires the target Vdd to be connected for reliable debugging.
996 * this cmd is supported in all modes except DFU
998 if (mode != STLINK_DEV_DFU_MODE) {
1000 float target_voltage;
1002 /* check target voltage (if supported) */
1003 res = stlink_usb_check_voltage(h, &target_voltage);
1005 if (res != ERROR_OK) {
1006 if (res != ERROR_COMMAND_NOTFOUND)
1007 LOG_ERROR("voltage check failed");
1008 /* attempt to continue as it is not a catastrophic failure */
1010 /* check for a sensible target voltage, operating range is 1.65-5.5v
1011 * according to datasheet */
1012 if (target_voltage < 1.5)
1013 LOG_ERROR("target voltage may be too low for reliable debugging");
1017 LOG_DEBUG("MODE: 0x%02X", mode);
1019 /* set selected mode */
1020 emode = stlink_get_mode(h->transport);
1022 if (emode == STLINK_MODE_UNKNOWN) {
1023 LOG_ERROR("selected mode (transport) not supported");
1027 /* preliminary SRST assert:
1028 * We want SRST is asserted before activating debug signals (mode_enter).
1029 * As the required mode has not been set, the adapter may not know what pin to use.
1030 * Tested firmware STLINK v2 JTAG v29 API v2 SWIM v0 uses T_NRST pin by default
1031 * Tested firmware STLINK v2 JTAG v27 API v2 SWIM v6 uses T_NRST pin by default
1032 * after power on, SWIM_RST stays unchanged */
1033 if (connect_under_reset && emode != STLINK_MODE_DEBUG_SWIM)
1034 stlink_usb_assert_srst(handle, 0);
1035 /* do not check the return status here, we will
1036 proceed and enter the desired mode below
1037 and try asserting srst again. */
1039 res = stlink_usb_mode_enter(handle, emode);
1040 if (res != ERROR_OK)
1043 /* assert SRST again: a little bit late but now the adapter knows for sure what pin to use */
1044 if (connect_under_reset) {
1045 res = stlink_usb_assert_srst(handle, 0);
1046 if (res != ERROR_OK)
1050 res = stlink_usb_current_mode(handle, &mode);
1052 if (res != ERROR_OK)
1055 LOG_DEBUG("MODE: 0x%02X", mode);
1060 /* request status from last swim request */
1061 static int stlink_swim_status(void *handle)
1063 struct stlink_usb_handle_s *h = handle;
1066 stlink_usb_init_buffer(handle, h->rx_ep, 4);
1067 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1068 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_READSTATUS;
1069 res = stlink_usb_xfer(handle, h->databuf, 4);
1070 if (res != ERROR_OK)
1075 the purpose of this function is unknown...
1076 capabilites? anyway for swim v6 it returns
1079 __attribute__((unused))
1080 static int stlink_swim_cap(void *handle, uint8_t *cap)
1082 struct stlink_usb_handle_s *h = handle;
1085 stlink_usb_init_buffer(handle, h->rx_ep, 8);
1086 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1087 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_READ_CAP;
1088 h->cmdbuf[h->cmdidx++] = 0x01;
1089 res = stlink_usb_xfer(handle, h->databuf, 8);
1090 if (res != ERROR_OK)
1092 memcpy(cap, h->databuf, 8);
1096 /* debug dongle assert/deassert sreset line */
1097 static int stlink_swim_assert_reset(void *handle, int reset)
1099 struct stlink_usb_handle_s *h = handle;
1102 stlink_usb_init_buffer(handle, h->rx_ep, 0);
1103 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1105 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_ASSERT_RESET;
1107 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_DEASSERT_RESET;
1108 res = stlink_cmd_allow_retry(handle, h->databuf, 0);
1109 if (res != ERROR_OK)
1116 1.3ms low then 750Hz then 1.5kHz
1118 static int stlink_swim_enter(void *handle)
1120 struct stlink_usb_handle_s *h = handle;
1123 stlink_usb_init_buffer(handle, h->rx_ep, 0);
1124 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1125 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_ENTER_SEQ;
1126 res = stlink_cmd_allow_retry(handle, h->databuf, 0);
1127 if (res != ERROR_OK)
1132 /* switch high/low speed swim */
1133 static int stlink_swim_speed(void *handle, int speed)
1135 struct stlink_usb_handle_s *h = handle;
1138 stlink_usb_init_buffer(handle, h->rx_ep, 0);
1139 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1140 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_SPEED;
1142 h->cmdbuf[h->cmdidx++] = 1;
1144 h->cmdbuf[h->cmdidx++] = 0;
1145 res = stlink_cmd_allow_retry(handle, h->databuf, 0);
1146 if (res != ERROR_OK)
1152 initiate srst from swim.
1153 nrst is pulled low for 50us.
1155 static int stlink_swim_generate_rst(void *handle)
1157 struct stlink_usb_handle_s *h = handle;
1160 stlink_usb_init_buffer(handle, h->rx_ep, 0);
1161 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1162 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_GEN_RST;
1163 res = stlink_cmd_allow_retry(handle, h->databuf, 0);
1164 if (res != ERROR_OK)
1170 send resyncronize sequence
1171 swim is pulled low for 16us
1172 reply is 64 clks low
1174 static int stlink_swim_resync(void *handle)
1176 struct stlink_usb_handle_s *h = handle;
1179 stlink_usb_init_buffer(handle, h->rx_ep, 0);
1180 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1181 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_RESET;
1182 res = stlink_cmd_allow_retry(handle, h->databuf, 0);
1183 if (res != ERROR_OK)
1188 static int stlink_swim_writebytes(void *handle, uint32_t addr, uint32_t len, const uint8_t *data)
1190 struct stlink_usb_handle_s *h = handle;
1193 unsigned int datalen = 0;
1194 int cmdsize = STLINK_CMD_SIZE_V2;
1196 if (len > STLINK_DATA_SIZE)
1199 if (h->version.stlink == 1)
1200 cmdsize = STLINK_SG_SIZE;
1202 stlink_usb_init_buffer(handle, h->tx_ep, 0);
1203 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1204 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_WRITEMEM;
1205 h_u16_to_be(h->cmdbuf+h->cmdidx, len);
1207 h_u32_to_be(h->cmdbuf+h->cmdidx, addr);
1209 for (i = 0; i < len; i++) {
1210 if (h->cmdidx == cmdsize)
1211 h->databuf[datalen++] = *(data++);
1213 h->cmdbuf[h->cmdidx++] = *(data++);
1215 if (h->version.stlink == 1)
1216 stlink_usb_set_cbw_transfer_datalength(handle, datalen);
1218 res = stlink_cmd_allow_retry(handle, h->databuf, datalen);
1219 if (res != ERROR_OK)
1224 static int stlink_swim_readbytes(void *handle, uint32_t addr, uint32_t len, uint8_t *data)
1226 struct stlink_usb_handle_s *h = handle;
1229 if (len > STLINK_DATA_SIZE)
1232 stlink_usb_init_buffer(handle, h->rx_ep, 0);
1233 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1234 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_READMEM;
1235 h_u16_to_be(h->cmdbuf+h->cmdidx, len);
1237 h_u32_to_be(h->cmdbuf+h->cmdidx, addr);
1239 res = stlink_cmd_allow_retry(handle, h->databuf, 0);
1240 if (res != ERROR_OK)
1243 stlink_usb_init_buffer(handle, h->rx_ep, len);
1244 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
1245 h->cmdbuf[h->cmdidx++] = STLINK_SWIM_READBUF;
1246 res = stlink_usb_xfer(handle, data, len);
1247 if (res != ERROR_OK)
1254 static int stlink_usb_idcode(void *handle, uint32_t *idcode)
1257 struct stlink_usb_handle_s *h = handle;
1259 assert(handle != NULL);
1261 /* there is no swim read core id cmd */
1262 if (h->transport == HL_TRANSPORT_SWIM) {
1267 stlink_usb_init_buffer(handle, h->rx_ep, 4);
1269 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1270 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_READCOREID;
1272 res = stlink_usb_xfer(handle, h->databuf, 4);
1274 if (res != ERROR_OK)
1277 *idcode = le_to_h_u32(h->databuf);
1279 LOG_DEBUG("IDCODE: 0x%08" PRIX32, *idcode);
1284 static int stlink_usb_v2_read_debug_reg(void *handle, uint32_t addr, uint32_t *val)
1286 struct stlink_usb_handle_s *h = handle;
1289 assert(handle != NULL);
1291 stlink_usb_init_buffer(handle, h->rx_ep, 8);
1293 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1294 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_READDEBUGREG;
1295 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
1298 res = stlink_cmd_allow_retry(handle, h->databuf, 8);
1299 if (res != ERROR_OK)
1302 *val = le_to_h_u32(h->databuf + 4);
1306 static int stlink_usb_write_debug_reg(void *handle, uint32_t addr, uint32_t val)
1308 struct stlink_usb_handle_s *h = handle;
1310 assert(handle != NULL);
1312 stlink_usb_init_buffer(handle, h->rx_ep, 2);
1314 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1315 if (h->version.jtag_api == STLINK_JTAG_API_V1)
1316 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_WRITEDEBUGREG;
1318 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_WRITEDEBUGREG;
1319 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
1321 h_u32_to_le(h->cmdbuf+h->cmdidx, val);
1324 return stlink_cmd_allow_retry(handle, h->databuf, 2);
1328 static int stlink_usb_trace_read(void *handle, uint8_t *buf, size_t *size)
1330 struct stlink_usb_handle_s *h = handle;
1332 assert(handle != NULL);
1334 if (h->trace.enabled && (h->version.flags & STLINK_F_HAS_TRACE)) {
1337 stlink_usb_init_buffer(handle, h->rx_ep, 10);
1339 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1340 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_GET_TRACE_NB;
1342 res = stlink_usb_xfer(handle, h->databuf, 2);
1343 if (res != ERROR_OK)
1346 size_t bytes_avail = le_to_h_u16(h->databuf);
1347 *size = bytes_avail < *size ? bytes_avail : *size - 1;
1350 res = stlink_usb_read_trace(handle, buf, *size);
1351 if (res != ERROR_OK)
1360 static enum target_state stlink_usb_v2_get_status(void *handle)
1365 result = stlink_usb_v2_read_debug_reg(handle, DCB_DHCSR, &status);
1366 if (result != ERROR_OK)
1367 return TARGET_UNKNOWN;
1369 if (status & S_HALT)
1370 return TARGET_HALTED;
1371 else if (status & S_RESET_ST)
1372 return TARGET_RESET;
1374 return TARGET_RUNNING;
1378 static enum target_state stlink_usb_state(void *handle)
1381 struct stlink_usb_handle_s *h = handle;
1383 assert(handle != NULL);
1385 if (h->transport == HL_TRANSPORT_SWIM) {
1386 res = stlink_usb_mode_enter(handle, stlink_get_mode(h->transport));
1387 if (res != ERROR_OK)
1388 return TARGET_UNKNOWN;
1390 res = stlink_swim_resync(handle);
1391 if (res != ERROR_OK)
1392 return TARGET_UNKNOWN;
1397 if (h->reconnect_pending) {
1398 LOG_INFO("Previous state query failed, trying to reconnect");
1399 res = stlink_usb_mode_enter(handle, stlink_get_mode(h->transport));
1401 if (res != ERROR_OK)
1402 return TARGET_UNKNOWN;
1404 h->reconnect_pending = false;
1407 if (h->version.jtag_api == STLINK_JTAG_API_V2) {
1408 res = stlink_usb_v2_get_status(handle);
1409 if (res == TARGET_UNKNOWN)
1410 h->reconnect_pending = true;
1414 stlink_usb_init_buffer(handle, h->rx_ep, 2);
1416 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1417 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_GETSTATUS;
1419 res = stlink_usb_xfer(handle, h->databuf, 2);
1421 if (res != ERROR_OK)
1422 return TARGET_UNKNOWN;
1424 if (h->databuf[0] == STLINK_CORE_RUNNING)
1425 return TARGET_RUNNING;
1426 if (h->databuf[0] == STLINK_CORE_HALTED)
1427 return TARGET_HALTED;
1429 h->reconnect_pending = true;
1431 return TARGET_UNKNOWN;
1434 static int stlink_usb_assert_srst(void *handle, int srst)
1436 struct stlink_usb_handle_s *h = handle;
1438 assert(handle != NULL);
1440 if (h->transport == HL_TRANSPORT_SWIM)
1441 return stlink_swim_assert_reset(handle, srst);
1443 if (h->version.stlink == 1)
1444 return ERROR_COMMAND_NOTFOUND;
1446 stlink_usb_init_buffer(handle, h->rx_ep, 2);
1448 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1449 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_DRIVE_NRST;
1450 h->cmdbuf[h->cmdidx++] = srst;
1452 return stlink_cmd_allow_retry(handle, h->databuf, 2);
1456 static void stlink_usb_trace_disable(void *handle)
1459 struct stlink_usb_handle_s *h = handle;
1461 assert(handle != NULL);
1463 assert(h->version.flags & STLINK_F_HAS_TRACE);
1465 LOG_DEBUG("Tracing: disable");
1467 stlink_usb_init_buffer(handle, h->rx_ep, 2);
1468 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1469 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_STOP_TRACE_RX;
1470 res = stlink_usb_xfer(handle, h->databuf, 2);
1472 if (res == ERROR_OK)
1473 h->trace.enabled = false;
1478 static int stlink_usb_trace_enable(void *handle)
1481 struct stlink_usb_handle_s *h = handle;
1483 assert(handle != NULL);
1485 if (h->version.flags & STLINK_F_HAS_TRACE) {
1486 stlink_usb_init_buffer(handle, h->rx_ep, 10);
1488 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1489 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_START_TRACE_RX;
1490 h_u16_to_le(h->cmdbuf+h->cmdidx, (uint16_t)STLINK_TRACE_SIZE);
1492 h_u32_to_le(h->cmdbuf+h->cmdidx, h->trace.source_hz);
1495 res = stlink_usb_xfer(handle, h->databuf, 2);
1497 if (res == ERROR_OK) {
1498 h->trace.enabled = true;
1499 LOG_DEBUG("Tracing: recording at %" PRIu32 "Hz", h->trace.source_hz);
1502 LOG_ERROR("Tracing is not supported by this version.");
1510 static int stlink_usb_reset(void *handle)
1512 struct stlink_usb_handle_s *h = handle;
1515 assert(handle != NULL);
1517 if (h->transport == HL_TRANSPORT_SWIM)
1518 return stlink_swim_generate_rst(handle);
1520 stlink_usb_init_buffer(handle, h->rx_ep, 2);
1522 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1524 if (h->version.jtag_api == STLINK_JTAG_API_V1)
1525 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_RESETSYS;
1527 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_RESETSYS;
1529 retval = stlink_cmd_allow_retry(handle, h->databuf, 2);
1530 if (retval != ERROR_OK)
1533 if (h->trace.enabled) {
1534 stlink_usb_trace_disable(h);
1535 return stlink_usb_trace_enable(h);
1542 static int stlink_usb_run(void *handle)
1545 struct stlink_usb_handle_s *h = handle;
1547 assert(handle != NULL);
1549 if (h->version.jtag_api == STLINK_JTAG_API_V2) {
1550 res = stlink_usb_write_debug_reg(handle, DCB_DHCSR, DBGKEY|C_DEBUGEN);
1555 stlink_usb_init_buffer(handle, h->rx_ep, 2);
1557 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1558 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_RUNCORE;
1560 return stlink_cmd_allow_retry(handle, h->databuf, 2);
1564 static int stlink_usb_halt(void *handle)
1567 struct stlink_usb_handle_s *h = handle;
1569 assert(handle != NULL);
1571 if (h->version.jtag_api == STLINK_JTAG_API_V2) {
1572 res = stlink_usb_write_debug_reg(handle, DCB_DHCSR, DBGKEY|C_HALT|C_DEBUGEN);
1577 stlink_usb_init_buffer(handle, h->rx_ep, 2);
1579 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1580 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_FORCEDEBUG;
1582 return stlink_cmd_allow_retry(handle, h->databuf, 2);
1586 static int stlink_usb_step(void *handle)
1588 struct stlink_usb_handle_s *h = handle;
1590 assert(handle != NULL);
1592 if (h->version.jtag_api == STLINK_JTAG_API_V2) {
1593 /* TODO: this emulates the v1 api, it should really use a similar auto mask isr
1594 * that the Cortex-M3 currently does. */
1595 stlink_usb_write_debug_reg(handle, DCB_DHCSR, DBGKEY|C_HALT|C_MASKINTS|C_DEBUGEN);
1596 stlink_usb_write_debug_reg(handle, DCB_DHCSR, DBGKEY|C_STEP|C_MASKINTS|C_DEBUGEN);
1597 return stlink_usb_write_debug_reg(handle, DCB_DHCSR, DBGKEY|C_HALT|C_DEBUGEN);
1600 stlink_usb_init_buffer(handle, h->rx_ep, 2);
1602 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1603 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_STEPCORE;
1605 return stlink_cmd_allow_retry(handle, h->databuf, 2);
1609 static int stlink_usb_read_regs(void *handle)
1612 struct stlink_usb_handle_s *h = handle;
1614 assert(handle != NULL);
1616 stlink_usb_init_buffer(handle, h->rx_ep, 84);
1618 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1619 if (h->version.jtag_api == STLINK_JTAG_API_V1)
1620 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_READALLREGS;
1622 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_READALLREGS;
1624 res = stlink_usb_xfer(handle, h->databuf, 84);
1626 if (res != ERROR_OK)
1633 static int stlink_usb_read_reg(void *handle, int num, uint32_t *val)
1636 struct stlink_usb_handle_s *h = handle;
1638 assert(handle != NULL);
1640 stlink_usb_init_buffer(handle, h->rx_ep, h->version.jtag_api == STLINK_JTAG_API_V1 ? 4 : 8);
1642 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1643 if (h->version.jtag_api == STLINK_JTAG_API_V1)
1644 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_READREG;
1646 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_READREG;
1647 h->cmdbuf[h->cmdidx++] = num;
1649 if (h->version.jtag_api == STLINK_JTAG_API_V1) {
1650 res = stlink_usb_xfer(handle, h->databuf, 4);
1651 if (res != ERROR_OK)
1653 *val = le_to_h_u32(h->databuf);
1656 res = stlink_cmd_allow_retry(handle, h->databuf, 8);
1657 if (res != ERROR_OK)
1659 *val = le_to_h_u32(h->databuf + 4);
1665 static int stlink_usb_write_reg(void *handle, int num, uint32_t val)
1667 struct stlink_usb_handle_s *h = handle;
1669 assert(handle != NULL);
1671 stlink_usb_init_buffer(handle, h->rx_ep, 2);
1673 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1674 if (h->version.jtag_api == STLINK_JTAG_API_V1)
1675 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_WRITEREG;
1677 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_WRITEREG;
1678 h->cmdbuf[h->cmdidx++] = num;
1679 h_u32_to_le(h->cmdbuf+h->cmdidx, val);
1682 return stlink_cmd_allow_retry(handle, h->databuf, 2);
1685 static int stlink_usb_get_rw_status(void *handle)
1688 struct stlink_usb_handle_s *h = handle;
1690 assert(handle != NULL);
1692 if (h->version.jtag_api == STLINK_JTAG_API_V1)
1695 stlink_usb_init_buffer(handle, h->rx_ep, 2);
1697 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1698 if (h->version.flags & STLINK_F_HAS_GETLASTRWSTATUS2) {
1699 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_GETLASTRWSTATUS2;
1701 res = stlink_usb_xfer(handle, h->databuf, 12);
1703 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_GETLASTRWSTATUS;
1705 res = stlink_usb_xfer(handle, h->databuf, 2);
1708 if (res != ERROR_OK)
1711 return stlink_usb_error_check(h);
1715 static int stlink_usb_read_mem8(void *handle, uint32_t addr, uint16_t len,
1719 uint16_t read_len = len;
1720 struct stlink_usb_handle_s *h = handle;
1722 assert(handle != NULL);
1724 /* max 8bit read/write is 64bytes */
1725 if (len > STLINK_MAX_RW8) {
1726 LOG_DEBUG("max buffer length exceeded");
1730 stlink_usb_init_buffer(handle, h->rx_ep, read_len);
1732 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1733 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_READMEM_8BIT;
1734 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
1736 h_u16_to_le(h->cmdbuf+h->cmdidx, len);
1739 /* we need to fix read length for single bytes */
1743 res = stlink_usb_xfer(handle, h->databuf, read_len);
1745 if (res != ERROR_OK)
1748 memcpy(buffer, h->databuf, len);
1750 return stlink_usb_get_rw_status(handle);
1754 static int stlink_usb_write_mem8(void *handle, uint32_t addr, uint16_t len,
1755 const uint8_t *buffer)
1758 struct stlink_usb_handle_s *h = handle;
1760 assert(handle != NULL);
1762 /* max 8bit read/write is 64bytes */
1763 if (len > STLINK_MAX_RW8) {
1764 LOG_DEBUG("max buffer length exceeded");
1768 stlink_usb_init_buffer(handle, h->tx_ep, len);
1770 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1771 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_WRITEMEM_8BIT;
1772 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
1774 h_u16_to_le(h->cmdbuf+h->cmdidx, len);
1777 res = stlink_usb_xfer(handle, buffer, len);
1779 if (res != ERROR_OK)
1782 return stlink_usb_get_rw_status(handle);
1786 static int stlink_usb_read_mem16(void *handle, uint32_t addr, uint16_t len,
1790 struct stlink_usb_handle_s *h = handle;
1792 assert(handle != NULL);
1794 if (!(h->version.flags & STLINK_F_HAS_MEM_16BIT))
1795 return ERROR_COMMAND_NOTFOUND;
1797 /* data must be a multiple of 2 and half-word aligned */
1798 if (len % 2 || addr % 2) {
1799 LOG_DEBUG("Invalid data alignment");
1800 return ERROR_TARGET_UNALIGNED_ACCESS;
1803 stlink_usb_init_buffer(handle, h->rx_ep, len);
1805 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1806 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_READMEM_16BIT;
1807 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
1809 h_u16_to_le(h->cmdbuf+h->cmdidx, len);
1812 res = stlink_usb_xfer(handle, h->databuf, len);
1814 if (res != ERROR_OK)
1817 memcpy(buffer, h->databuf, len);
1819 return stlink_usb_get_rw_status(handle);
1823 static int stlink_usb_write_mem16(void *handle, uint32_t addr, uint16_t len,
1824 const uint8_t *buffer)
1827 struct stlink_usb_handle_s *h = handle;
1829 assert(handle != NULL);
1831 if (!(h->version.flags & STLINK_F_HAS_MEM_16BIT))
1832 return ERROR_COMMAND_NOTFOUND;
1834 /* data must be a multiple of 2 and half-word aligned */
1835 if (len % 2 || addr % 2) {
1836 LOG_DEBUG("Invalid data alignment");
1837 return ERROR_TARGET_UNALIGNED_ACCESS;
1840 stlink_usb_init_buffer(handle, h->tx_ep, len);
1842 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1843 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_WRITEMEM_16BIT;
1844 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
1846 h_u16_to_le(h->cmdbuf+h->cmdidx, len);
1849 res = stlink_usb_xfer(handle, buffer, len);
1851 if (res != ERROR_OK)
1854 return stlink_usb_get_rw_status(handle);
1858 static int stlink_usb_read_mem32(void *handle, uint32_t addr, uint16_t len,
1862 struct stlink_usb_handle_s *h = handle;
1864 assert(handle != NULL);
1866 /* data must be a multiple of 4 and word aligned */
1867 if (len % 4 || addr % 4) {
1868 LOG_DEBUG("Invalid data alignment");
1869 return ERROR_TARGET_UNALIGNED_ACCESS;
1872 stlink_usb_init_buffer(handle, h->rx_ep, len);
1874 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1875 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_READMEM_32BIT;
1876 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
1878 h_u16_to_le(h->cmdbuf+h->cmdidx, len);
1881 res = stlink_usb_xfer(handle, h->databuf, len);
1883 if (res != ERROR_OK)
1886 memcpy(buffer, h->databuf, len);
1888 return stlink_usb_get_rw_status(handle);
1892 static int stlink_usb_write_mem32(void *handle, uint32_t addr, uint16_t len,
1893 const uint8_t *buffer)
1896 struct stlink_usb_handle_s *h = handle;
1898 assert(handle != NULL);
1900 /* data must be a multiple of 4 and word aligned */
1901 if (len % 4 || addr % 4) {
1902 LOG_DEBUG("Invalid data alignment");
1903 return ERROR_TARGET_UNALIGNED_ACCESS;
1906 stlink_usb_init_buffer(handle, h->tx_ep, len);
1908 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
1909 h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_WRITEMEM_32BIT;
1910 h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
1912 h_u16_to_le(h->cmdbuf+h->cmdidx, len);
1915 res = stlink_usb_xfer(handle, buffer, len);
1917 if (res != ERROR_OK)
1920 return stlink_usb_get_rw_status(handle);
1923 static uint32_t stlink_max_block_size(uint32_t tar_autoincr_block, uint32_t address)
1925 uint32_t max_tar_block = (tar_autoincr_block - ((tar_autoincr_block - 1) & address));
1926 if (max_tar_block == 0)
1928 return max_tar_block;
1931 static int stlink_usb_read_mem(void *handle, uint32_t addr, uint32_t size,
1932 uint32_t count, uint8_t *buffer)
1934 int retval = ERROR_OK;
1935 uint32_t bytes_remaining;
1937 struct stlink_usb_handle_s *h = handle;
1939 /* calculate byte count */
1942 /* switch to 8 bit if stlink does not support 16 bit memory read */
1943 if (size == 2 && !(h->version.flags & STLINK_F_HAS_MEM_16BIT))
1948 bytes_remaining = (size != 1) ? \
1949 stlink_max_block_size(h->max_mem_packet, addr) : STLINK_MAX_RW8;
1951 if (count < bytes_remaining)
1952 bytes_remaining = count;
1954 if (h->transport == HL_TRANSPORT_SWIM) {
1955 retval = stlink_swim_readbytes(handle, addr, bytes_remaining, buffer);
1956 if (retval != ERROR_OK)
1960 * all stlink support 8/32bit memory read/writes and only from
1961 * stlink V2J26 there is support for 16 bit memory read/write.
1962 * Honour 32 bit and, if possible, 16 bit too. Otherwise, handle
1967 /* When in jtag mode the stlink uses the auto-increment functionality.
1968 * However it expects us to pass the data correctly, this includes
1969 * alignment and any page boundaries. We already do this as part of the
1970 * adi_v5 implementation, but the stlink is a hla adapter and so this
1971 * needs implementing manually.
1972 * currently this only affects jtag mode, according to ST they do single
1973 * access in SWD mode - but this may change and so we do it for both modes */
1975 /* we first need to check for any unaligned bytes */
1976 if (addr & (size - 1)) {
1978 uint32_t head_bytes = size - (addr & (size - 1));
1979 retval = stlink_usb_read_mem8(handle, addr, head_bytes, buffer);
1980 if (retval == ERROR_WAIT && retries < MAX_WAIT_RETRIES) {
1981 usleep((1<<retries++) * 1000);
1984 if (retval != ERROR_OK)
1986 buffer += head_bytes;
1988 count -= head_bytes;
1989 bytes_remaining -= head_bytes;
1992 if (bytes_remaining & (size - 1))
1993 retval = stlink_usb_read_mem(handle, addr, 1, bytes_remaining, buffer);
1995 retval = stlink_usb_read_mem16(handle, addr, bytes_remaining, buffer);
1997 retval = stlink_usb_read_mem32(handle, addr, bytes_remaining, buffer);
1999 retval = stlink_usb_read_mem8(handle, addr, bytes_remaining, buffer);
2001 if (retval == ERROR_WAIT && retries < MAX_WAIT_RETRIES) {
2002 usleep((1<<retries++) * 1000);
2005 if (retval != ERROR_OK)
2008 buffer += bytes_remaining;
2009 addr += bytes_remaining;
2010 count -= bytes_remaining;
2016 static int stlink_usb_write_mem(void *handle, uint32_t addr, uint32_t size,
2017 uint32_t count, const uint8_t *buffer)
2019 int retval = ERROR_OK;
2020 uint32_t bytes_remaining;
2022 struct stlink_usb_handle_s *h = handle;
2024 /* calculate byte count */
2027 /* switch to 8 bit if stlink does not support 16 bit memory read */
2028 if (size == 2 && !(h->version.flags & STLINK_F_HAS_MEM_16BIT))
2033 bytes_remaining = (size != 1) ? \
2034 stlink_max_block_size(h->max_mem_packet, addr) : STLINK_MAX_RW8;
2036 if (count < bytes_remaining)
2037 bytes_remaining = count;
2039 if (h->transport == HL_TRANSPORT_SWIM) {
2040 retval = stlink_swim_writebytes(handle, addr, bytes_remaining, buffer);
2041 if (retval != ERROR_OK)
2045 * all stlink support 8/32bit memory read/writes and only from
2046 * stlink V2J26 there is support for 16 bit memory read/write.
2047 * Honour 32 bit and, if possible, 16 bit too. Otherwise, handle
2052 /* When in jtag mode the stlink uses the auto-increment functionality.
2053 * However it expects us to pass the data correctly, this includes
2054 * alignment and any page boundaries. We already do this as part of the
2055 * adi_v5 implementation, but the stlink is a hla adapter and so this
2056 * needs implementing manually.
2057 * currently this only affects jtag mode, according to ST they do single
2058 * access in SWD mode - but this may change and so we do it for both modes */
2060 /* we first need to check for any unaligned bytes */
2061 if (addr & (size - 1)) {
2063 uint32_t head_bytes = size - (addr & (size - 1));
2064 retval = stlink_usb_write_mem8(handle, addr, head_bytes, buffer);
2065 if (retval == ERROR_WAIT && retries < MAX_WAIT_RETRIES) {
2066 usleep((1<<retries++) * 1000);
2069 if (retval != ERROR_OK)
2071 buffer += head_bytes;
2073 count -= head_bytes;
2074 bytes_remaining -= head_bytes;
2077 if (bytes_remaining & (size - 1))
2078 retval = stlink_usb_write_mem(handle, addr, 1, bytes_remaining, buffer);
2080 retval = stlink_usb_write_mem16(handle, addr, bytes_remaining, buffer);
2082 retval = stlink_usb_write_mem32(handle, addr, bytes_remaining, buffer);
2085 retval = stlink_usb_write_mem8(handle, addr, bytes_remaining, buffer);
2086 if (retval == ERROR_WAIT && retries < MAX_WAIT_RETRIES) {
2087 usleep((1<<retries++) * 1000);
2090 if (retval != ERROR_OK)
2093 buffer += bytes_remaining;
2094 addr += bytes_remaining;
2095 count -= bytes_remaining;
2102 static int stlink_usb_override_target(const char *targetname)
2104 return !strcmp(targetname, "cortex_m");
2107 static int stlink_speed_swim(void *handle, int khz, bool query)
2110 we dont care what the khz rate is
2111 we only have low and high speed...
2112 before changing speed the SWIM_CSR HS bit
2116 stlink_swim_speed(handle, 0);
2118 stlink_swim_speed(handle, 1);
2122 static int stlink_match_speed_map(const struct speed_map *map, unsigned int map_size, int khz, bool query)
2125 int speed_index = -1;
2126 int speed_diff = INT_MAX;
2129 for (i = 0; i < map_size; i++) {
2130 if (khz == map[i].speed) {
2134 int current_diff = khz - map[i].speed;
2135 /* get abs value for comparison */
2136 current_diff = (current_diff > 0) ? current_diff : -current_diff;
2137 if ((current_diff < speed_diff) && khz >= map[i].speed) {
2138 speed_diff = current_diff;
2144 if (speed_index == -1) {
2145 /* this will only be here if we cannot match the slow speed.
2146 * use the slowest speed we support.*/
2147 speed_index = map_size - 1;
2149 } else if (i == map_size)
2152 if (!match && query) {
2153 LOG_INFO("Unable to match requested speed %d kHz, using %d kHz", \
2154 khz, map[speed_index].speed);
2160 static int stlink_speed_swd(void *handle, int khz, bool query)
2163 struct stlink_usb_handle_s *h = handle;
2165 /* old firmware cannot change it */
2166 if (!(h->version.flags & STLINK_F_HAS_SWD_SET_FREQ))
2169 speed_index = stlink_match_speed_map(stlink_khz_to_speed_map_swd,
2170 ARRAY_SIZE(stlink_khz_to_speed_map_swd), khz, query);
2173 int result = stlink_usb_set_swdclk(h, stlink_khz_to_speed_map_swd[speed_index].speed_divisor);
2174 if (result != ERROR_OK) {
2175 LOG_ERROR("Unable to set adapter speed");
2180 return stlink_khz_to_speed_map_swd[speed_index].speed;
2183 static int stlink_speed_jtag(void *handle, int khz, bool query)
2186 struct stlink_usb_handle_s *h = handle;
2188 /* old firmware cannot change it */
2189 if (!(h->version.flags & STLINK_F_HAS_JTAG_SET_FREQ))
2192 speed_index = stlink_match_speed_map(stlink_khz_to_speed_map_jtag,
2193 ARRAY_SIZE(stlink_khz_to_speed_map_jtag), khz, query);
2196 int result = stlink_usb_set_jtagclk(h, stlink_khz_to_speed_map_jtag[speed_index].speed_divisor);
2197 if (result != ERROR_OK) {
2198 LOG_ERROR("Unable to set adapter speed");
2203 return stlink_khz_to_speed_map_jtag[speed_index].speed;
2206 void stlink_dump_speed_map(const struct speed_map *map, unsigned int map_size)
2210 LOG_DEBUG("Supported clock speeds are:");
2211 for (i = 0; i < map_size; i++)
2212 LOG_DEBUG("%d kHz", map[i].speed);
2215 static int stlink_speed(void *handle, int khz, bool query)
2217 struct stlink_usb_handle_s *h = handle;
2222 if (h->transport == HL_TRANSPORT_SWIM)
2223 return stlink_speed_swim(handle, khz, query);
2224 else if (h->transport == HL_TRANSPORT_SWD)
2225 return stlink_speed_swd(handle, khz, query);
2226 else if (h->transport == HL_TRANSPORT_JTAG)
2227 return stlink_speed_jtag(handle, khz, query);
2233 static int stlink_usb_close(void *handle)
2237 enum stlink_mode emode;
2238 struct stlink_usb_handle_s *h = handle;
2241 res = stlink_usb_current_mode(handle, &mode);
2244 /* do not exit if return code != ERROR_OK,
2245 it prevents us from closing jtag_libusb */
2247 if (res == ERROR_OK) {
2248 /* try to exit current mode */
2250 case STLINK_DEV_DFU_MODE:
2251 emode = STLINK_MODE_DFU;
2253 case STLINK_DEV_DEBUG_MODE:
2254 emode = STLINK_MODE_DEBUG_SWD;
2256 case STLINK_DEV_SWIM_MODE:
2257 emode = STLINK_MODE_DEBUG_SWIM;
2259 case STLINK_DEV_BOOTLOADER_MODE:
2260 case STLINK_DEV_MASS_MODE:
2262 emode = STLINK_MODE_UNKNOWN;
2266 if (emode != STLINK_MODE_UNKNOWN)
2267 stlink_usb_mode_leave(handle, emode);
2268 /* do not check return code, it prevent
2269 us from closing jtag_libusb */
2273 jtag_libusb_close(h->fd);
2281 static int stlink_usb_open(struct hl_interface_param_s *param, void **fd)
2283 int err, retry_count = 1;
2284 struct stlink_usb_handle_s *h;
2286 LOG_DEBUG("stlink_usb_open");
2288 h = calloc(1, sizeof(struct stlink_usb_handle_s));
2291 LOG_DEBUG("malloc failed");
2295 h->transport = param->transport;
2297 for (unsigned i = 0; param->vid[i]; i++) {
2298 LOG_DEBUG("transport: %d vid: 0x%04x pid: 0x%04x serial: %s",
2299 param->transport, param->vid[i], param->pid[i],
2300 param->serial ? param->serial : "");
2304 On certain host USB configurations(e.g. MacBook Air)
2305 STLINKv2 dongle seems to have its FW in a funky state if,
2306 after plugging it in, you try to use openocd with it more
2307 then once (by launching and closing openocd). In cases like
2308 that initial attempt to read the FW info via
2309 stlink_usb_version will fail and the device has to be reset
2310 in order to become operational.
2313 if (jtag_libusb_open(param->vid, param->pid, param->serial, &h->fd) != ERROR_OK) {
2314 LOG_ERROR("open failed");
2318 jtag_libusb_set_configuration(h->fd, 0);
2320 if (jtag_libusb_claim_interface(h->fd, 0) != ERROR_OK) {
2321 LOG_DEBUG("claim interface failed");
2325 /* RX EP is common for all versions */
2326 h->rx_ep = STLINK_RX_EP;
2329 if (jtag_libusb_get_pid(jtag_libusb_get_device(h->fd), &pid) != ERROR_OK) {
2330 LOG_DEBUG("libusb_get_pid failed");
2334 /* wrap version for first read */
2337 h->version.stlink = 1;
2338 h->tx_ep = STLINK_TX_EP;
2340 case STLINK_V2_1_PID:
2341 case STLINK_V2_1_NO_MSD_PID:
2342 h->version.stlink = 2;
2343 h->tx_ep = STLINK_V2_1_TX_EP;
2344 h->trace_ep = STLINK_V2_1_TRACE_EP;
2347 /* fall through - we assume V2 to be the default version*/
2349 h->version.stlink = 2;
2350 h->tx_ep = STLINK_TX_EP;
2351 h->trace_ep = STLINK_TRACE_EP;
2355 /* get the device version */
2356 err = stlink_usb_version(h);
2358 if (err == ERROR_OK) {
2360 } else if (h->version.stlink == 1 ||
2362 LOG_ERROR("read version failed");
2365 err = jtag_libusb_release_interface(h->fd, 0);
2366 if (err != ERROR_OK) {
2367 LOG_ERROR("release interface failed");
2371 err = jtag_libusb_reset_device(h->fd);
2372 if (err != ERROR_OK) {
2373 LOG_ERROR("reset device failed");
2377 jtag_libusb_close(h->fd);
2379 Give the device one second to settle down and
2382 usleep(1 * 1000 * 1000);
2387 /* check if mode is supported */
2390 switch (h->transport) {
2391 case HL_TRANSPORT_SWD:
2392 if (h->version.jtag_api == STLINK_JTAG_API_V1)
2395 case HL_TRANSPORT_JTAG:
2396 if (h->version.jtag == 0)
2399 case HL_TRANSPORT_SWIM:
2400 if (h->version.swim == 0)
2408 if (err != ERROR_OK) {
2409 LOG_ERROR("mode (transport) not supported by device");
2413 /* initialize the debug hardware */
2414 err = stlink_usb_init_mode(h, param->connect_under_reset);
2416 if (err != ERROR_OK) {
2417 LOG_ERROR("init mode failed (unable to connect to the target)");
2421 if (h->transport == HL_TRANSPORT_SWIM) {
2422 err = stlink_swim_enter(h);
2423 if (err != ERROR_OK) {
2424 LOG_ERROR("stlink_swim_enter_failed (unable to connect to the target)");
2428 h->max_mem_packet = STLINK_DATA_SIZE;
2432 if (h->transport == HL_TRANSPORT_JTAG) {
2433 if (h->version.flags & STLINK_F_HAS_JTAG_SET_FREQ) {
2434 stlink_dump_speed_map(stlink_khz_to_speed_map_jtag, ARRAY_SIZE(stlink_khz_to_speed_map_jtag));
2435 stlink_speed(h, param->initial_interface_speed, false);
2437 } else if (h->transport == HL_TRANSPORT_SWD) {
2438 if (h->version.flags & STLINK_F_HAS_SWD_SET_FREQ) {
2439 stlink_dump_speed_map(stlink_khz_to_speed_map_swd, ARRAY_SIZE(stlink_khz_to_speed_map_swd));
2440 stlink_speed(h, param->initial_interface_speed, false);
2444 /* get cpuid, so we can determine the max page size
2445 * start with a safe default */
2446 h->max_mem_packet = (1 << 10);
2449 err = stlink_usb_read_mem32(h, CPUID, 4, buffer);
2450 if (err == ERROR_OK) {
2451 uint32_t cpuid = le_to_h_u32(buffer);
2452 int i = (cpuid >> 4) & 0xf;
2453 if (i == 4 || i == 3) {
2454 /* Cortex-M3/M4 has 4096 bytes autoincrement range */
2455 h->max_mem_packet = (1 << 12);
2459 LOG_DEBUG("Using TAR autoincrement: %" PRIu32, h->max_mem_packet);
2466 stlink_usb_close(h);
2471 int stlink_config_trace(void *handle, bool enabled, enum tpiu_pin_protocol pin_protocol,
2472 uint32_t port_size, unsigned int *trace_freq)
2474 struct stlink_usb_handle_s *h = handle;
2476 if (enabled && (!(h->version.flags & STLINK_F_HAS_TRACE) ||
2477 pin_protocol != TPIU_PIN_PROTOCOL_ASYNC_UART)) {
2478 LOG_ERROR("The attached ST-LINK version doesn't support this trace mode");
2483 stlink_usb_trace_disable(h);
2487 if (*trace_freq > STLINK_TRACE_MAX_HZ) {
2488 LOG_ERROR("ST-LINK doesn't support SWO frequency higher than %u",
2489 STLINK_TRACE_MAX_HZ);
2493 stlink_usb_trace_disable(h);
2496 *trace_freq = STLINK_TRACE_MAX_HZ;
2497 h->trace.source_hz = *trace_freq;
2499 return stlink_usb_trace_enable(h);
2503 struct hl_layout_api_s stlink_usb_layout_api = {
2505 .open = stlink_usb_open,
2507 .close = stlink_usb_close,
2509 .idcode = stlink_usb_idcode,
2511 .state = stlink_usb_state,
2513 .reset = stlink_usb_reset,
2515 .assert_srst = stlink_usb_assert_srst,
2517 .run = stlink_usb_run,
2519 .halt = stlink_usb_halt,
2521 .step = stlink_usb_step,
2523 .read_regs = stlink_usb_read_regs,
2525 .read_reg = stlink_usb_read_reg,
2527 .write_reg = stlink_usb_write_reg,
2529 .read_mem = stlink_usb_read_mem,
2531 .write_mem = stlink_usb_write_mem,
2533 .write_debug_reg = stlink_usb_write_debug_reg,
2535 .override_target = stlink_usb_override_target,
2537 .speed = stlink_speed,
2539 .config_trace = stlink_config_trace,
2541 .poll_trace = stlink_usb_trace_read,