1 // SPDX-License-Identifier: GPL-2.0-or-later
3 /***************************************************************************
4 * Copyright (C) 2021 by Adrian Negreanu *
7 * Copyright (C) 2018 by Mickaƫl Thomas *
10 * Copyright (C) 2016 by Maksym Hilliaka *
11 * oter@frozen-team.com *
13 * Copyright (C) 2016 by Phillip Pearson *
16 * Copyright (C) 2014 by Paul Fertser *
17 * fercerpav@gmail.com *
19 * Copyright (C) 2013 by mike brown *
20 * mike@theshedworks.org.uk *
22 * Copyright (C) 2013 by Spencer Oliver *
23 * spen@spen-soft.co.uk *
24 ***************************************************************************/
30 #include <transport/transport.h>
31 #include "helper/replacements.h"
32 #include <jtag/adapter.h>
34 #include <jtag/interface.h>
35 #include <jtag/commands.h>
37 #include <target/cortex_m.h>
39 #include "cmsis_dap.h"
40 #include "libusb_helper.h"
42 static const struct cmsis_dap_backend
*const cmsis_dap_backends
[] = {
43 #if BUILD_CMSIS_DAP_USB == 1
44 &cmsis_dap_usb_backend
,
47 #if BUILD_CMSIS_DAP_HID == 1
48 &cmsis_dap_hid_backend
,
54 /* Known vid/pid pairs:
55 * VID 0xc251: Keil Software
56 * PID 0xf001: LPC-Link-II CMSIS_DAP
57 * PID 0xf002: OPEN-SDA CMSIS_DAP (Freedom Board)
58 * PID 0x2722: Keil ULINK2 CMSIS-DAP
59 * PID 0x2750: Keil ULINKplus CMSIS-DAP
61 * VID 0x0d28: mbed Software
62 * PID 0x0204: MBED CMSIS-DAP
66 /* vid = pid = 0 marks the end of the list */
67 static uint16_t cmsis_dap_vid
[MAX_USB_IDS
+ 1] = { 0 };
68 static uint16_t cmsis_dap_pid
[MAX_USB_IDS
+ 1] = { 0 };
69 static int cmsis_dap_backend
= -1;
72 /* CMSIS-DAP General Commands */
73 #define CMD_DAP_INFO 0x00
74 #define CMD_DAP_LED 0x01
75 #define CMD_DAP_CONNECT 0x02
76 #define CMD_DAP_DISCONNECT 0x03
77 #define CMD_DAP_WRITE_ABORT 0x08
78 #define CMD_DAP_DELAY 0x09
79 #define CMD_DAP_RESET_TARGET 0x0A
82 #define INFO_ID_VENDOR 0x01 /* string */
83 #define INFO_ID_PRODUCT 0x02 /* string */
84 #define INFO_ID_SERNUM 0x03 /* string */
85 #define INFO_ID_FW_VER 0x04 /* string */
86 #define INFO_ID_TD_VEND 0x05 /* string */
87 #define INFO_ID_TD_NAME 0x06 /* string */
88 #define INFO_ID_CAPS 0xf0 /* byte */
89 #define INFO_ID_PKT_CNT 0xfe /* byte */
90 #define INFO_ID_PKT_SZ 0xff /* short */
91 #define INFO_ID_SWO_BUF_SZ 0xfd /* word */
93 #define INFO_CAPS_SWD BIT(0)
94 #define INFO_CAPS_JTAG BIT(1)
95 #define INFO_CAPS_SWO_UART BIT(2)
96 #define INFO_CAPS_SWO_MANCHESTER BIT(3)
97 #define INFO_CAPS_ATOMIC_CMDS BIT(4)
98 #define INFO_CAPS_TEST_DOMAIN_TIMER BIT(5)
99 #define INFO_CAPS_SWO_STREAMING_TRACE BIT(6)
100 #define INFO_CAPS_UART_PORT BIT(7)
101 #define INFO_CAPS_USB_COM_PORT BIT(8)
102 #define INFO_CAPS__NUM_CAPS 9
105 #define LED_ID_CONNECT 0x00
106 #define LED_ID_RUN 0x01
112 #define CONNECT_DEFAULT 0x00
113 #define CONNECT_SWD 0x01
114 #define CONNECT_JTAG 0x02
116 /* CMSIS-DAP Common SWD/JTAG Commands */
117 #define CMD_DAP_DELAY 0x09
118 #define CMD_DAP_SWJ_PINS 0x10
119 #define CMD_DAP_SWJ_CLOCK 0x11
120 #define CMD_DAP_SWJ_SEQ 0x12
132 #define SWJ_PIN_TCK (1<<0)
133 #define SWJ_PIN_TMS (1<<1)
134 #define SWJ_PIN_TDI (1<<2)
135 #define SWJ_PIN_TDO (1<<3)
136 #define SWJ_PIN_TRST (1<<5)
137 #define SWJ_PIN_SRST (1<<7)
139 /* CMSIS-DAP SWD Commands */
140 #define CMD_DAP_SWD_CONFIGURE 0x13
141 #define CMD_DAP_SWD_SEQUENCE 0x1D
143 /* CMSIS-DAP JTAG Commands */
144 #define CMD_DAP_JTAG_SEQ 0x14
145 #define CMD_DAP_JTAG_CONFIGURE 0x15
146 #define CMD_DAP_JTAG_IDCODE 0x16
148 /* CMSIS-DAP JTAG sequence info masks */
149 /* Number of bits to clock through (0 means 64) */
150 #define DAP_JTAG_SEQ_TCK 0x3F
151 /* TMS will be set during the sequence if this bit is set */
152 #define DAP_JTAG_SEQ_TMS 0x40
153 /* TDO output will be captured if this bit is set */
154 #define DAP_JTAG_SEQ_TDO 0x80
157 /* CMSIS-DAP Transfer Commands */
158 #define CMD_DAP_TFER_CONFIGURE 0x04
159 #define CMD_DAP_TFER 0x05
160 #define CMD_DAP_TFER_BLOCK 0x06
161 #define CMD_DAP_TFER_ABORT 0x07
163 /* DAP Status Code */
165 #define DAP_ERROR 0xFF
167 /* CMSIS-DAP SWO Commands */
168 #define CMD_DAP_SWO_TRANSPORT 0x17
169 #define CMD_DAP_SWO_MODE 0x18
170 #define CMD_DAP_SWO_BAUDRATE 0x19
171 #define CMD_DAP_SWO_CONTROL 0x1A
172 #define CMD_DAP_SWO_STATUS 0x1B
173 #define CMD_DAP_SWO_DATA 0x1C
174 #define CMD_DAP_SWO_EX_STATUS 0x1E
176 /* SWO transport mode for reading trace data */
177 #define DAP_SWO_TRANSPORT_NONE 0
178 #define DAP_SWO_TRANSPORT_DATA 1
179 #define DAP_SWO_TRANSPORT_WINUSB 2
181 /* SWO trace capture mode */
182 #define DAP_SWO_MODE_OFF 0
183 #define DAP_SWO_MODE_UART 1
184 #define DAP_SWO_MODE_MANCHESTER 2
186 /* SWO trace data capture */
187 #define DAP_SWO_CONTROL_STOP 0
188 #define DAP_SWO_CONTROL_START 1
190 /* SWO trace status */
191 #define DAP_SWO_STATUS_CAPTURE_INACTIVE 0
192 #define DAP_SWO_STATUS_CAPTURE_ACTIVE 1
193 #define DAP_SWO_STATUS_CAPTURE_MASK BIT(0)
194 #define DAP_SWO_STATUS_STREAM_ERROR_MASK BIT(6)
195 #define DAP_SWO_STATUS_BUFFER_OVERRUN_MASK BIT(7)
197 /* CMSIS-DAP Vendor Commands
200 static const char * const info_caps_str
[INFO_CAPS__NUM_CAPS
] = {
203 "SWO-UART supported",
204 "SWO-MANCHESTER supported",
205 "Atomic commands supported",
206 "Test domain timer supported",
207 "SWO streaming trace supported",
208 "UART communication port supported",
209 "UART via USB COM port supported",
212 struct pending_scan_result
{
213 /** Offset in bytes in the CMD_DAP_JTAG_SEQ response buffer. */
215 /** Number of bits to read. */
217 /** Location to store the result */
219 /** Offset in the destination buffer */
220 unsigned int buffer_offset
;
223 /* Each block in FIFO can contain up to pending_queue_len transfers */
224 static unsigned int pending_queue_len
;
226 /* pointers to buffers that will receive jtag scan results on the next flush */
227 #define MAX_PENDING_SCAN_RESULTS 256
228 static int pending_scan_result_count
;
229 static struct pending_scan_result pending_scan_results
[MAX_PENDING_SCAN_RESULTS
];
231 /* queued JTAG sequences that will be executed on the next flush */
232 #define QUEUED_SEQ_BUF_LEN (cmsis_dap_handle->packet_size - 3)
233 static int queued_seq_count
;
234 static int queued_seq_buf_end
;
235 static int queued_seq_tdo_ptr
;
236 static uint8_t queued_seq_buf
[1024]; /* TODO: make dynamic / move into cmsis object */
238 static int queued_retval
;
240 static uint8_t output_pins
= SWJ_PIN_SRST
| SWJ_PIN_TRST
;
242 static struct cmsis_dap
*cmsis_dap_handle
;
245 static int cmsis_dap_quit(void);
247 static int cmsis_dap_open(void)
249 const struct cmsis_dap_backend
*backend
= NULL
;
251 struct cmsis_dap
*dap
= calloc(1, sizeof(struct cmsis_dap
));
253 LOG_ERROR("unable to allocate memory");
257 if (cmsis_dap_backend
>= 0) {
258 /* Use forced backend */
259 backend
= cmsis_dap_backends
[cmsis_dap_backend
];
260 if (backend
->open(dap
, cmsis_dap_vid
, cmsis_dap_pid
, adapter_get_required_serial()) != ERROR_OK
)
263 /* Try all backends */
264 for (unsigned int i
= 0; i
< ARRAY_SIZE(cmsis_dap_backends
); i
++) {
265 backend
= cmsis_dap_backends
[i
];
266 if (backend
->open(dap
, cmsis_dap_vid
, cmsis_dap_pid
, adapter_get_required_serial()) == ERROR_OK
)
274 LOG_ERROR("unable to find a matching CMSIS-DAP device");
279 dap
->backend
= backend
;
281 cmsis_dap_handle
= dap
;
286 static void cmsis_dap_close(struct cmsis_dap
*dap
)
289 dap
->backend
->close(dap
);
293 free(dap
->packet_buffer
);
295 for (unsigned int i
= 0; i
< MAX_PENDING_REQUESTS
; i
++) {
296 free(dap
->pending_fifo
[i
].transfers
);
297 dap
->pending_fifo
[i
].transfers
= NULL
;
300 free(cmsis_dap_handle
);
301 cmsis_dap_handle
= NULL
;
304 static void cmsis_dap_flush_read(struct cmsis_dap
*dap
)
307 /* Some CMSIS-DAP adapters keep buffered packets over
308 * USB close/open so we need to flush up to 64 old packets
309 * to be sure all buffers are empty */
310 for (i
= 0; i
< 64; i
++) {
311 int retval
= dap
->backend
->read(dap
, 10);
312 if (retval
== ERROR_TIMEOUT_REACHED
)
316 LOG_DEBUG("Flushed %u packets", i
);
319 /* Send a message and receive the reply */
320 static int cmsis_dap_xfer(struct cmsis_dap
*dap
, int txlen
)
322 if (dap
->pending_fifo_block_count
) {
323 LOG_ERROR("pending %u blocks, flushing", dap
->pending_fifo_block_count
);
324 while (dap
->pending_fifo_block_count
) {
325 dap
->backend
->read(dap
, 10);
326 dap
->pending_fifo_block_count
--;
328 dap
->pending_fifo_put_idx
= 0;
329 dap
->pending_fifo_get_idx
= 0;
332 uint8_t current_cmd
= dap
->command
[0];
333 int retval
= dap
->backend
->write(dap
, txlen
, LIBUSB_TIMEOUT_MS
);
338 retval
= dap
->backend
->read(dap
, LIBUSB_TIMEOUT_MS
);
342 uint8_t *resp
= dap
->response
;
343 if (resp
[0] == DAP_ERROR
) {
344 LOG_ERROR("CMSIS-DAP command 0x%" PRIx8
" not implemented", current_cmd
);
345 return ERROR_NOT_IMPLEMENTED
;
348 if (resp
[0] != current_cmd
) {
349 LOG_ERROR("CMSIS-DAP command mismatch. Sent 0x%" PRIx8
350 " received 0x%" PRIx8
, current_cmd
, resp
[0]);
352 cmsis_dap_flush_read(dap
);
359 static int cmsis_dap_cmd_dap_swj_pins(uint8_t pins
, uint8_t mask
, uint32_t delay
, uint8_t *input
)
361 uint8_t *command
= cmsis_dap_handle
->command
;
363 command
[0] = CMD_DAP_SWJ_PINS
;
366 h_u32_to_le(&command
[3], delay
);
368 int retval
= cmsis_dap_xfer(cmsis_dap_handle
, 7);
369 if (retval
!= ERROR_OK
) {
370 LOG_ERROR("CMSIS-DAP command CMD_DAP_SWJ_PINS failed.");
371 return ERROR_JTAG_DEVICE_ERROR
;
375 *input
= cmsis_dap_handle
->response
[1];
380 static int cmsis_dap_cmd_dap_swj_clock(uint32_t swj_clock
)
382 uint8_t *command
= cmsis_dap_handle
->command
;
384 /* set clock in Hz */
387 command
[0] = CMD_DAP_SWJ_CLOCK
;
388 h_u32_to_le(&command
[1], swj_clock
);
390 int retval
= cmsis_dap_xfer(cmsis_dap_handle
, 5);
391 if (retval
!= ERROR_OK
|| cmsis_dap_handle
->response
[1] != DAP_OK
) {
392 LOG_ERROR("CMSIS-DAP command CMD_DAP_SWJ_CLOCK failed.");
393 return ERROR_JTAG_DEVICE_ERROR
;
399 /* clock a sequence of bits out on TMS, to change JTAG states */
400 static int cmsis_dap_cmd_dap_swj_sequence(uint8_t s_len
, const uint8_t *sequence
)
402 uint8_t *command
= cmsis_dap_handle
->command
;
404 #ifdef CMSIS_DAP_JTAG_DEBUG
405 LOG_DEBUG("cmsis-dap TMS sequence: len=%d", s_len
);
406 for (unsigned int i
= 0; i
< DIV_ROUND_UP(s_len
, 8); ++i
)
407 printf("%02X ", sequence
[i
]);
412 command
[0] = CMD_DAP_SWJ_SEQ
;
414 bit_copy(&command
[2], 0, sequence
, 0, s_len
);
416 int retval
= cmsis_dap_xfer(cmsis_dap_handle
, 2 + DIV_ROUND_UP(s_len
, 8));
417 if (retval
!= ERROR_OK
|| cmsis_dap_handle
->response
[1] != DAP_OK
)
423 static int cmsis_dap_cmd_dap_info(uint8_t info
, uint8_t **data
)
425 uint8_t *command
= cmsis_dap_handle
->command
;
427 command
[0] = CMD_DAP_INFO
;
430 int retval
= cmsis_dap_xfer(cmsis_dap_handle
, 2);
431 if (retval
!= ERROR_OK
) {
432 LOG_ERROR("CMSIS-DAP command CMD_INFO failed.");
433 return ERROR_JTAG_DEVICE_ERROR
;
436 *data
= &cmsis_dap_handle
->response
[1];
441 static int cmsis_dap_cmd_dap_led(uint8_t led
, uint8_t state
)
443 uint8_t *command
= cmsis_dap_handle
->command
;
445 command
[0] = CMD_DAP_LED
;
449 int retval
= cmsis_dap_xfer(cmsis_dap_handle
, 3);
450 if (retval
!= ERROR_OK
|| cmsis_dap_handle
->response
[1] != DAP_OK
) {
451 LOG_ERROR("CMSIS-DAP command CMD_LED failed.");
452 return ERROR_JTAG_DEVICE_ERROR
;
458 static int cmsis_dap_cmd_dap_connect(uint8_t mode
)
460 uint8_t *command
= cmsis_dap_handle
->command
;
462 command
[0] = CMD_DAP_CONNECT
;
465 int retval
= cmsis_dap_xfer(cmsis_dap_handle
, 2);
466 if (retval
!= ERROR_OK
) {
467 LOG_ERROR("CMSIS-DAP command CMD_CONNECT failed.");
468 return ERROR_JTAG_DEVICE_ERROR
;
471 if (cmsis_dap_handle
->response
[1] != mode
) {
472 LOG_ERROR("CMSIS-DAP failed to connect in mode (%d)", mode
);
473 return ERROR_JTAG_DEVICE_ERROR
;
479 static int cmsis_dap_cmd_dap_disconnect(void)
481 uint8_t *command
= cmsis_dap_handle
->command
;
483 command
[0] = CMD_DAP_DISCONNECT
;
485 int retval
= cmsis_dap_xfer(cmsis_dap_handle
, 1);
486 if (retval
!= ERROR_OK
|| cmsis_dap_handle
->response
[1] != DAP_OK
) {
487 LOG_ERROR("CMSIS-DAP command CMD_DISCONNECT failed.");
488 return ERROR_JTAG_DEVICE_ERROR
;
494 static int cmsis_dap_cmd_dap_tfer_configure(uint8_t idle
, uint16_t retry_count
, uint16_t match_retry
)
496 uint8_t *command
= cmsis_dap_handle
->command
;
498 command
[0] = CMD_DAP_TFER_CONFIGURE
;
500 h_u16_to_le(&command
[2], retry_count
);
501 h_u16_to_le(&command
[4], match_retry
);
503 int retval
= cmsis_dap_xfer(cmsis_dap_handle
, 6);
504 if (retval
!= ERROR_OK
|| cmsis_dap_handle
->response
[1] != DAP_OK
) {
505 LOG_ERROR("CMSIS-DAP command CMD_TFER_Configure failed.");
506 return ERROR_JTAG_DEVICE_ERROR
;
512 static int cmsis_dap_cmd_dap_swd_configure(uint8_t cfg
)
514 uint8_t *command
= cmsis_dap_handle
->command
;
516 command
[0] = CMD_DAP_SWD_CONFIGURE
;
519 int retval
= cmsis_dap_xfer(cmsis_dap_handle
, 2);
520 if (retval
!= ERROR_OK
|| cmsis_dap_handle
->response
[1] != DAP_OK
) {
521 LOG_ERROR("CMSIS-DAP command CMD_SWD_Configure failed.");
522 return ERROR_JTAG_DEVICE_ERROR
;
529 static int cmsis_dap_cmd_dap_delay(uint16_t delay_us
)
531 uint8_t *command
= cmsis_dap_handle
->command
;
533 command
[0] = CMD_DAP_DELAY
;
534 h_u16_to_le(&command
[1], delay_us
);
536 int retval
= cmsis_dap_xfer(cmsis_dap_handle
, 3);
537 if (retval
!= ERROR_OK
|| cmsis_dap_handle
->response
[1] != DAP_OK
) {
538 LOG_ERROR("CMSIS-DAP command CMD_Delay failed.");
539 return ERROR_JTAG_DEVICE_ERROR
;
546 static int cmsis_dap_metacmd_targetsel(uint32_t instance_id
)
548 uint8_t *command
= cmsis_dap_handle
->command
;
549 const uint32_t SEQ_RD
= 0x80, SEQ_WR
= 0x00;
551 /* SWD multi-drop requires a transfer ala CMD_DAP_TFER,
552 but with no expectation of an SWD ACK response. In
553 CMSIS-DAP v1.20 and v2.00, CMD_DAP_SWD_SEQUENCE was
554 added to allow this special sequence to be generated.
555 The purpose of this operation is to select the target
556 corresponding to the instance_id that is written */
558 LOG_DEBUG_IO("DP write reg TARGETSEL %" PRIx32
, instance_id
);
561 command
[idx
++] = CMD_DAP_SWD_SEQUENCE
;
562 command
[idx
++] = 3; /* sequence count */
564 /* sequence 0: packet request for TARGETSEL */
565 command
[idx
++] = SEQ_WR
| 8;
566 command
[idx
++] = SWD_CMD_START
| swd_cmd(false, false, DP_TARGETSEL
) | SWD_CMD_STOP
| SWD_CMD_PARK
;
568 /* sequence 1: read Trn ACK Trn, no expectation for target to ACK */
569 command
[idx
++] = SEQ_RD
| 5;
571 /* sequence 2: WDATA plus parity */
572 command
[idx
++] = SEQ_WR
| (32 + 1);
573 h_u32_to_le(command
+ idx
, instance_id
);
575 command
[idx
++] = parity_u32(instance_id
);
577 int retval
= cmsis_dap_xfer(cmsis_dap_handle
, idx
);
578 if (retval
!= ERROR_OK
|| cmsis_dap_handle
->response
[1] != DAP_OK
) {
579 LOG_ERROR("CMSIS-DAP command SWD_Sequence failed.");
580 return ERROR_JTAG_DEVICE_ERROR
;
587 * Sets the SWO transport mode.
588 * @param[in] transport The transport mode. Can be None, SWO_Data or
589 * WinUSB (requires CMSIS-DAP v2).
591 static int cmsis_dap_cmd_dap_swo_transport(uint8_t transport
)
593 uint8_t *command
= cmsis_dap_handle
->command
;
595 command
[0] = CMD_DAP_SWO_TRANSPORT
;
596 command
[1] = transport
;
598 int retval
= cmsis_dap_xfer(cmsis_dap_handle
, 2);
599 if (retval
!= ERROR_OK
|| cmsis_dap_handle
->response
[1] != DAP_OK
) {
600 LOG_ERROR("CMSIS-DAP: command CMD_SWO_Transport(%d) failed.", transport
);
601 return ERROR_JTAG_DEVICE_ERROR
;
608 * Sets the SWO trace capture mode.
609 * @param[in] mode Trace capture mode. Can be UART or MANCHESTER.
611 static int cmsis_dap_cmd_dap_swo_mode(uint8_t mode
)
613 uint8_t *command
= cmsis_dap_handle
->command
;
615 command
[0] = CMD_DAP_SWO_MODE
;
618 int retval
= cmsis_dap_xfer(cmsis_dap_handle
, 2);
619 if (retval
!= ERROR_OK
|| cmsis_dap_handle
->response
[1] != DAP_OK
) {
620 LOG_ERROR("CMSIS-DAP: command CMD_SWO_Mode(%d) failed.", mode
);
621 return ERROR_JTAG_DEVICE_ERROR
;
628 * Sets the baudrate for capturing SWO trace data.
629 * Can be called iteratively to determine supported baudrates.
630 * @param[in] in_baudrate Requested baudrate.
631 * @param[out] dev_baudrate Actual baudrate or 0 (baudrate not configured).
632 * When requested baudrate is not achievable the
633 * closest configured baudrate can be returned or
634 * 0 which indicates that baudrate was not configured.
636 static int cmsis_dap_cmd_dap_swo_baudrate(
637 uint32_t in_baudrate
,
638 uint32_t *dev_baudrate
)
640 uint8_t *command
= cmsis_dap_handle
->command
;
642 command
[0] = CMD_DAP_SWO_BAUDRATE
;
643 h_u32_to_le(&command
[1], in_baudrate
);
645 int retval
= cmsis_dap_xfer(cmsis_dap_handle
, 5);
646 uint32_t rvbr
= le_to_h_u32(&cmsis_dap_handle
->response
[1]);
647 if (retval
!= ERROR_OK
|| rvbr
== 0) {
648 LOG_ERROR("CMSIS-DAP: command CMD_SWO_Baudrate(%u) -> %u failed.", in_baudrate
, rvbr
);
651 return ERROR_JTAG_DEVICE_ERROR
;
655 *dev_baudrate
= rvbr
;
661 * Controls the SWO trace data capture.
662 * @param[in] control Start or stop a trace. Starting capture automatically
663 * flushes any existing trace data in buffers which has
666 static int cmsis_dap_cmd_dap_swo_control(uint8_t control
)
668 uint8_t *command
= cmsis_dap_handle
->command
;
670 command
[0] = CMD_DAP_SWO_CONTROL
;
671 command
[1] = control
;
673 int retval
= cmsis_dap_xfer(cmsis_dap_handle
, 2);
674 if (retval
!= ERROR_OK
|| cmsis_dap_handle
->response
[1] != DAP_OK
) {
675 LOG_ERROR("CMSIS-DAP: command CMD_SWO_Control(%d) failed.", control
);
676 return ERROR_JTAG_DEVICE_ERROR
;
683 * Reads the SWO trace status.
684 * @param[out] trace_status The trace's status.
685 * Bit0: Trace Capture (1 - active, 0 - inactive).
686 * Bit6: Trace Stream Error.
687 * Bit7: Trace Buffer Overrun.
688 * @param[out] trace_count Number of bytes in Trace Buffer (not yet read).
690 static int cmsis_dap_cmd_dap_swo_status(
691 uint8_t *trace_status
,
694 uint8_t *command
= cmsis_dap_handle
->command
;
696 command
[0] = CMD_DAP_SWO_STATUS
;
698 int retval
= cmsis_dap_xfer(cmsis_dap_handle
, 1);
699 if (retval
!= ERROR_OK
) {
700 LOG_ERROR("CMSIS-DAP: command CMD_SWO_Status failed.");
701 return ERROR_JTAG_DEVICE_ERROR
;
705 *trace_status
= cmsis_dap_handle
->response
[1];
707 *trace_count
= le_to_h_u32(&cmsis_dap_handle
->response
[2]);
713 * Reads the captured SWO trace data from Trace Buffer.
714 * @param[in] max_trace_count Maximum number of Trace Data bytes to read.
715 * @param[out] trace_status The trace's status.
716 * @param[out] trace_count Number of Trace Data bytes read.
717 * @param[out] data Trace Data bytes read.
719 static int cmsis_dap_cmd_dap_swo_data(
720 size_t max_trace_count
,
721 uint8_t *trace_status
,
725 uint8_t *command
= cmsis_dap_handle
->command
;
727 command
[0] = CMD_DAP_SWO_DATA
;
728 h_u16_to_le(&command
[1], max_trace_count
);
730 int retval
= cmsis_dap_xfer(cmsis_dap_handle
, 3);
731 if (retval
!= ERROR_OK
) {
732 LOG_ERROR("CMSIS-DAP: command CMD_SWO_Data failed.");
733 return ERROR_JTAG_DEVICE_ERROR
;
736 *trace_status
= cmsis_dap_handle
->response
[1];
737 *trace_count
= le_to_h_u16(&cmsis_dap_handle
->response
[2]);
739 if (*trace_count
> 0)
740 memcpy(data
, &cmsis_dap_handle
->response
[4], *trace_count
);
745 static void cmsis_dap_swd_write_from_queue(struct cmsis_dap
*dap
)
747 uint8_t *command
= dap
->command
;
748 struct pending_request_block
*block
= &dap
->pending_fifo
[dap
->pending_fifo_put_idx
];
750 LOG_DEBUG_IO("Executing %d queued transactions from FIFO index %u",
751 block
->transfer_count
, dap
->pending_fifo_put_idx
);
753 if (queued_retval
!= ERROR_OK
) {
754 LOG_DEBUG("Skipping due to previous errors: %d", queued_retval
);
758 if (block
->transfer_count
== 0)
761 command
[0] = CMD_DAP_TFER
;
762 command
[1] = 0x00; /* DAP Index */
763 command
[2] = block
->transfer_count
;
766 for (unsigned int i
= 0; i
< block
->transfer_count
; i
++) {
767 struct pending_transfer_result
*transfer
= &(block
->transfers
[i
]);
768 uint8_t cmd
= transfer
->cmd
;
769 uint32_t data
= transfer
->data
;
771 LOG_DEBUG_IO("%s %s reg %x %" PRIx32
,
772 cmd
& SWD_CMD_APNDP
? "AP" : "DP",
773 cmd
& SWD_CMD_RNW
? "read" : "write",
774 (cmd
& SWD_CMD_A32
) >> 1, data
);
776 /* When proper WAIT handling is implemented in the
777 * common SWD framework, this kludge can be
778 * removed. However, this might lead to minor
779 * performance degradation as the adapter wouldn't be
780 * able to automatically retry anything (because ARM
781 * has forgotten to implement sticky error flags
782 * clearing). See also comments regarding
783 * cmsis_dap_cmd_dap_tfer_configure() and
784 * cmsis_dap_cmd_dap_swd_configure() in
787 if (!(cmd
& SWD_CMD_RNW
) &&
788 !(cmd
& SWD_CMD_APNDP
) &&
789 (cmd
& SWD_CMD_A32
) >> 1 == DP_CTRL_STAT
&&
790 (data
& CORUNDETECT
)) {
791 LOG_DEBUG("refusing to enable sticky overrun detection");
792 data
&= ~CORUNDETECT
;
795 command
[idx
++] = (cmd
>> 1) & 0x0f;
796 if (!(cmd
& SWD_CMD_RNW
)) {
797 h_u32_to_le(&command
[idx
], data
);
802 int retval
= dap
->backend
->write(dap
, idx
, LIBUSB_TIMEOUT_MS
);
804 queued_retval
= retval
;
807 queued_retval
= ERROR_OK
;
810 dap
->pending_fifo_put_idx
= (dap
->pending_fifo_put_idx
+ 1) % dap
->packet_count
;
811 dap
->pending_fifo_block_count
++;
812 if (dap
->pending_fifo_block_count
> dap
->packet_count
)
813 LOG_ERROR("too much pending writes %u", dap
->pending_fifo_block_count
);
818 block
->transfer_count
= 0;
821 static void cmsis_dap_swd_read_process(struct cmsis_dap
*dap
, int timeout_ms
)
823 struct pending_request_block
*block
= &dap
->pending_fifo
[dap
->pending_fifo_get_idx
];
825 if (dap
->pending_fifo_block_count
== 0)
826 LOG_ERROR("no pending write");
829 int retval
= dap
->backend
->read(dap
, timeout_ms
);
830 if (retval
== ERROR_TIMEOUT_REACHED
&& timeout_ms
< LIBUSB_TIMEOUT_MS
)
834 LOG_DEBUG("error reading data");
835 queued_retval
= ERROR_FAIL
;
839 uint8_t *resp
= dap
->response
;
840 if (resp
[0] != CMD_DAP_TFER
) {
841 LOG_ERROR("CMSIS-DAP command mismatch. Expected 0x%x received 0x%" PRIx8
,
842 CMD_DAP_TFER
, resp
[0]);
843 queued_retval
= ERROR_FAIL
;
847 unsigned int transfer_count
= resp
[1];
848 uint8_t ack
= resp
[2] & 0x07;
849 if (resp
[2] & 0x08) {
850 LOG_DEBUG("CMSIS-DAP Protocol Error @ %d (wrong parity)", transfer_count
);
851 queued_retval
= ERROR_FAIL
;
854 if (ack
!= SWD_ACK_OK
) {
855 LOG_DEBUG("SWD ack not OK @ %d %s", transfer_count
,
856 ack
== SWD_ACK_WAIT
? "WAIT" : ack
== SWD_ACK_FAULT
? "FAULT" : "JUNK");
857 queued_retval
= ack
== SWD_ACK_WAIT
? ERROR_WAIT
: ERROR_FAIL
;
858 /* TODO: use results of transfers completed before the error occurred? */
862 if (block
->transfer_count
!= transfer_count
)
863 LOG_ERROR("CMSIS-DAP transfer count mismatch: expected %d, got %d",
864 block
->transfer_count
, transfer_count
);
866 LOG_DEBUG_IO("Received results of %d queued transactions FIFO index %u timeout %i",
867 transfer_count
, dap
->pending_fifo_get_idx
, timeout_ms
);
868 unsigned int idx
= 3;
869 for (unsigned int i
= 0; i
< transfer_count
; i
++) {
870 struct pending_transfer_result
*transfer
= &(block
->transfers
[i
]);
871 if (transfer
->cmd
& SWD_CMD_RNW
) {
872 static uint32_t last_read
;
873 uint32_t data
= le_to_h_u32(&resp
[idx
]);
877 LOG_DEBUG_IO("Read result: %" PRIx32
, data
);
879 /* Imitate posted AP reads */
880 if ((transfer
->cmd
& SWD_CMD_APNDP
) ||
881 ((transfer
->cmd
& SWD_CMD_A32
) >> 1 == DP_RDBUFF
)) {
886 if (transfer
->buffer
)
887 *(uint32_t *)(transfer
->buffer
) = tmp
;
892 block
->transfer_count
= 0;
893 dap
->pending_fifo_get_idx
= (dap
->pending_fifo_get_idx
+ 1) % dap
->packet_count
;
894 dap
->pending_fifo_block_count
--;
897 static int cmsis_dap_swd_run_queue(void)
899 if (cmsis_dap_handle
->pending_fifo_block_count
)
900 cmsis_dap_swd_read_process(cmsis_dap_handle
, 0);
902 cmsis_dap_swd_write_from_queue(cmsis_dap_handle
);
904 while (cmsis_dap_handle
->pending_fifo_block_count
)
905 cmsis_dap_swd_read_process(cmsis_dap_handle
, LIBUSB_TIMEOUT_MS
);
907 cmsis_dap_handle
->pending_fifo_put_idx
= 0;
908 cmsis_dap_handle
->pending_fifo_get_idx
= 0;
910 int retval
= queued_retval
;
911 queued_retval
= ERROR_OK
;
916 static void cmsis_dap_swd_queue_cmd(uint8_t cmd
, uint32_t *dst
, uint32_t data
)
918 bool targetsel_cmd
= swd_cmd(false, false, DP_TARGETSEL
) == cmd
;
920 if (cmsis_dap_handle
->pending_fifo
[cmsis_dap_handle
->pending_fifo_put_idx
].transfer_count
== pending_queue_len
922 if (cmsis_dap_handle
->pending_fifo_block_count
)
923 cmsis_dap_swd_read_process(cmsis_dap_handle
, 0);
925 /* Not enough room in the queue. Run the queue. */
926 cmsis_dap_swd_write_from_queue(cmsis_dap_handle
);
928 if (cmsis_dap_handle
->pending_fifo_block_count
>= cmsis_dap_handle
->packet_count
)
929 cmsis_dap_swd_read_process(cmsis_dap_handle
, LIBUSB_TIMEOUT_MS
);
932 if (queued_retval
!= ERROR_OK
)
936 cmsis_dap_metacmd_targetsel(data
);
940 struct pending_request_block
*block
= &cmsis_dap_handle
->pending_fifo
[cmsis_dap_handle
->pending_fifo_put_idx
];
941 struct pending_transfer_result
*transfer
= &(block
->transfers
[block
->transfer_count
]);
942 transfer
->data
= data
;
944 if (cmd
& SWD_CMD_RNW
) {
945 /* Queue a read transaction */
946 transfer
->buffer
= dst
;
948 block
->transfer_count
++;
951 static void cmsis_dap_swd_write_reg(uint8_t cmd
, uint32_t value
, uint32_t ap_delay_clk
)
953 assert(!(cmd
& SWD_CMD_RNW
));
954 cmsis_dap_swd_queue_cmd(cmd
, NULL
, value
);
957 static void cmsis_dap_swd_read_reg(uint8_t cmd
, uint32_t *value
, uint32_t ap_delay_clk
)
959 assert(cmd
& SWD_CMD_RNW
);
960 cmsis_dap_swd_queue_cmd(cmd
, value
, 0);
963 static int cmsis_dap_get_serial_info(void)
967 int retval
= cmsis_dap_cmd_dap_info(INFO_ID_SERNUM
, &data
);
968 if (retval
!= ERROR_OK
)
971 if (data
[0]) /* strlen */
972 LOG_INFO("CMSIS-DAP: Serial# = %s", &data
[1]);
977 static int cmsis_dap_get_version_info(void)
981 /* INFO_ID_FW_VER - string */
982 int retval
= cmsis_dap_cmd_dap_info(INFO_ID_FW_VER
, &data
);
983 if (retval
!= ERROR_OK
)
986 if (data
[0]) /* strlen */
987 LOG_INFO("CMSIS-DAP: FW Version = %s", &data
[1]);
992 static int cmsis_dap_get_caps_info(void)
996 /* INFO_ID_CAPS - byte */
997 int retval
= cmsis_dap_cmd_dap_info(INFO_ID_CAPS
, &data
);
998 if (retval
!= ERROR_OK
)
1001 if (data
[0] == 1 || data
[0] == 2) {
1002 uint16_t caps
= data
[1];
1004 caps
|= (uint16_t)data
[2] << 8;
1006 cmsis_dap_handle
->caps
= caps
;
1008 for (unsigned int i
= 0; i
< INFO_CAPS__NUM_CAPS
; ++i
) {
1010 LOG_INFO("CMSIS-DAP: %s", info_caps_str
[i
]);
1017 static int cmsis_dap_get_swo_buf_sz(uint32_t *swo_buf_sz
)
1021 /* INFO_ID_SWO_BUF_SZ - word */
1022 int retval
= cmsis_dap_cmd_dap_info(INFO_ID_SWO_BUF_SZ
, &data
);
1023 if (retval
!= ERROR_OK
)
1029 *swo_buf_sz
= le_to_h_u32(&data
[1]);
1031 LOG_INFO("CMSIS-DAP: SWO Trace Buffer Size = %u bytes", *swo_buf_sz
);
1036 static int cmsis_dap_get_status(void)
1040 int retval
= cmsis_dap_cmd_dap_swj_pins(0, 0, 0, &d
);
1042 if (retval
== ERROR_OK
) {
1043 LOG_INFO("SWCLK/TCK = %d SWDIO/TMS = %d TDI = %d TDO = %d nTRST = %d nRESET = %d",
1044 (d
& SWJ_PIN_TCK
) ? 1 : 0,
1045 (d
& SWJ_PIN_TMS
) ? 1 : 0,
1046 (d
& SWJ_PIN_TDI
) ? 1 : 0,
1047 (d
& SWJ_PIN_TDO
) ? 1 : 0,
1048 (d
& SWJ_PIN_TRST
) ? 1 : 0,
1049 (d
& SWJ_PIN_SRST
) ? 1 : 0);
1055 static int cmsis_dap_swd_switch_seq(enum swd_special_seq seq
)
1061 if ((output_pins
& (SWJ_PIN_SRST
| SWJ_PIN_TRST
)) == (SWJ_PIN_SRST
| SWJ_PIN_TRST
)) {
1062 /* Following workaround deasserts reset on most adapters.
1063 * Do not reconnect if a reset line is active!
1064 * Reconnecting would break connecting under reset. */
1066 /* First disconnect before connecting, Atmel EDBG needs it for SAMD/R/L/C */
1067 cmsis_dap_cmd_dap_disconnect();
1069 /* When we are reconnecting, DAP_Connect needs to be rerun, at
1070 * least on Keil ULINK-ME */
1071 retval
= cmsis_dap_cmd_dap_connect(CONNECT_SWD
);
1072 if (retval
!= ERROR_OK
)
1078 LOG_DEBUG_IO("SWD line reset");
1079 s
= swd_seq_line_reset
;
1080 s_len
= swd_seq_line_reset_len
;
1083 LOG_DEBUG("JTAG-to-SWD");
1084 s
= swd_seq_jtag_to_swd
;
1085 s_len
= swd_seq_jtag_to_swd_len
;
1087 case JTAG_TO_DORMANT
:
1088 LOG_DEBUG("JTAG-to-DORMANT");
1089 s
= swd_seq_jtag_to_dormant
;
1090 s_len
= swd_seq_jtag_to_dormant_len
;
1093 LOG_DEBUG("SWD-to-JTAG");
1094 s
= swd_seq_swd_to_jtag
;
1095 s_len
= swd_seq_swd_to_jtag_len
;
1097 case SWD_TO_DORMANT
:
1098 LOG_DEBUG("SWD-to-DORMANT");
1099 s
= swd_seq_swd_to_dormant
;
1100 s_len
= swd_seq_swd_to_dormant_len
;
1102 case DORMANT_TO_SWD
:
1103 LOG_DEBUG("DORMANT-to-SWD");
1104 s
= swd_seq_dormant_to_swd
;
1105 s_len
= swd_seq_dormant_to_swd_len
;
1107 case DORMANT_TO_JTAG
:
1108 LOG_DEBUG("DORMANT-to-JTAG");
1109 s
= swd_seq_dormant_to_jtag
;
1110 s_len
= swd_seq_dormant_to_jtag_len
;
1113 LOG_ERROR("Sequence %d not supported", seq
);
1117 retval
= cmsis_dap_cmd_dap_swj_sequence(s_len
, s
);
1118 if (retval
!= ERROR_OK
)
1121 /* Atmel EDBG needs renew clock setting after SWJ_Sequence
1122 * otherwise default frequency is used */
1123 return cmsis_dap_cmd_dap_swj_clock(adapter_get_speed_khz());
1126 static int cmsis_dap_swd_open(void)
1128 if (!(cmsis_dap_handle
->caps
& INFO_CAPS_SWD
)) {
1129 LOG_ERROR("CMSIS-DAP: SWD not supported");
1130 return ERROR_JTAG_DEVICE_ERROR
;
1133 int retval
= cmsis_dap_cmd_dap_connect(CONNECT_SWD
);
1134 if (retval
!= ERROR_OK
)
1137 /* Add more setup here.??... */
1139 LOG_INFO("CMSIS-DAP: Interface Initialised (SWD)");
1143 static int cmsis_dap_init(void)
1147 int retval
= cmsis_dap_open();
1148 if (retval
!= ERROR_OK
)
1151 cmsis_dap_flush_read(cmsis_dap_handle
);
1153 retval
= cmsis_dap_get_caps_info();
1154 if (retval
!= ERROR_OK
)
1157 retval
= cmsis_dap_get_version_info();
1158 if (retval
!= ERROR_OK
)
1161 retval
= cmsis_dap_get_serial_info();
1162 if (retval
!= ERROR_OK
)
1166 retval
= cmsis_dap_swd_open();
1167 if (retval
!= ERROR_OK
)
1170 /* Connect in JTAG mode */
1171 if (!(cmsis_dap_handle
->caps
& INFO_CAPS_JTAG
)) {
1172 LOG_ERROR("CMSIS-DAP: JTAG not supported");
1173 return ERROR_JTAG_DEVICE_ERROR
;
1176 retval
= cmsis_dap_cmd_dap_connect(CONNECT_JTAG
);
1177 if (retval
!= ERROR_OK
)
1180 LOG_INFO("CMSIS-DAP: Interface Initialised (JTAG)");
1183 /* Be conservative and suppress submitting multiple HID requests
1184 * until we get packet count info from the adaptor */
1185 cmsis_dap_handle
->packet_count
= 1;
1186 pending_queue_len
= 12;
1188 /* INFO_ID_PKT_SZ - short */
1189 retval
= cmsis_dap_cmd_dap_info(INFO_ID_PKT_SZ
, &data
);
1190 if (retval
!= ERROR_OK
)
1193 if (data
[0] == 2) { /* short */
1194 uint16_t pkt_sz
= data
[1] + (data
[2] << 8);
1195 if (pkt_sz
!= cmsis_dap_handle
->packet_size
) {
1197 /* 4 bytes of command header + 5 bytes per register
1198 * write. For bulk read sequences just 4 bytes are
1199 * needed per transfer, so this is suboptimal. */
1200 pending_queue_len
= (pkt_sz
- 4) / 5;
1202 free(cmsis_dap_handle
->packet_buffer
);
1203 retval
= cmsis_dap_handle
->backend
->packet_buffer_alloc(cmsis_dap_handle
, pkt_sz
);
1204 if (retval
!= ERROR_OK
)
1207 LOG_DEBUG("CMSIS-DAP: Packet Size = %" PRIu16
, pkt_sz
);
1211 /* INFO_ID_PKT_CNT - byte */
1212 retval
= cmsis_dap_cmd_dap_info(INFO_ID_PKT_CNT
, &data
);
1213 if (retval
!= ERROR_OK
)
1216 if (data
[0] == 1) { /* byte */
1217 unsigned int pkt_cnt
= data
[1];
1219 cmsis_dap_handle
->packet_count
= MIN(MAX_PENDING_REQUESTS
, pkt_cnt
);
1221 LOG_DEBUG("CMSIS-DAP: Packet Count = %u", pkt_cnt
);
1224 LOG_DEBUG("Allocating FIFO for %u pending packets", cmsis_dap_handle
->packet_count
);
1225 for (unsigned int i
= 0; i
< cmsis_dap_handle
->packet_count
; i
++) {
1226 cmsis_dap_handle
->pending_fifo
[i
].transfers
= malloc(pending_queue_len
1227 * sizeof(struct pending_transfer_result
));
1228 if (!cmsis_dap_handle
->pending_fifo
[i
].transfers
) {
1229 LOG_ERROR("Unable to allocate memory for CMSIS-DAP queue");
1230 retval
= ERROR_FAIL
;
1235 /* Intentionally not checked for error, just logs an info message
1236 * not vital for further debugging */
1237 (void)cmsis_dap_get_status();
1239 /* Now try to connect to the target
1240 * TODO: This is all SWD only @ present */
1241 retval
= cmsis_dap_cmd_dap_swj_clock(adapter_get_speed_khz());
1242 if (retval
!= ERROR_OK
)
1245 /* Ask CMSIS-DAP to automatically retry on receiving WAIT for
1246 * up to 64 times. This must be changed to 0 if sticky
1247 * overrun detection is enabled. */
1248 retval
= cmsis_dap_cmd_dap_tfer_configure(0, 64, 0);
1249 if (retval
!= ERROR_OK
)
1253 /* Data Phase (bit 2) must be set to 1 if sticky overrun
1254 * detection is enabled */
1255 retval
= cmsis_dap_cmd_dap_swd_configure(0); /* 1 TRN, no Data Phase */
1256 if (retval
!= ERROR_OK
)
1260 /* Intentionally not checked for error, debugging will work
1262 (void)cmsis_dap_cmd_dap_led(LED_ID_CONNECT
, LED_ON
);
1263 (void)cmsis_dap_cmd_dap_led(LED_ID_RUN
, LED_ON
);
1265 /* support connecting with srst asserted */
1266 enum reset_types jtag_reset_config
= jtag_get_reset_config();
1268 if (jtag_reset_config
& RESET_CNCT_UNDER_SRST
) {
1269 if (jtag_reset_config
& RESET_SRST_NO_GATING
) {
1270 retval
= cmsis_dap_cmd_dap_swj_pins(0, SWJ_PIN_SRST
, 0, NULL
);
1271 if (retval
!= ERROR_OK
)
1273 LOG_INFO("Connecting under reset");
1276 LOG_INFO("CMSIS-DAP: Interface ready");
1284 static int cmsis_dap_swd_init(void)
1290 static int cmsis_dap_quit(void)
1292 cmsis_dap_cmd_dap_disconnect();
1295 cmsis_dap_cmd_dap_led(LED_ID_RUN
, LED_OFF
);
1296 cmsis_dap_cmd_dap_led(LED_ID_CONNECT
, LED_OFF
);
1298 cmsis_dap_close(cmsis_dap_handle
);
1303 static int cmsis_dap_reset(int trst
, int srst
)
1305 /* Set both TRST and SRST even if they're not enabled as
1306 * there's no way to tristate them */
1310 output_pins
|= SWJ_PIN_SRST
;
1312 output_pins
|= SWJ_PIN_TRST
;
1314 int retval
= cmsis_dap_cmd_dap_swj_pins(output_pins
,
1315 SWJ_PIN_TRST
| SWJ_PIN_SRST
, 0, NULL
);
1316 if (retval
!= ERROR_OK
)
1317 LOG_ERROR("CMSIS-DAP: Interface reset failed");
1321 static void cmsis_dap_execute_sleep(struct jtag_command
*cmd
)
1324 int retval
= cmsis_dap_cmd_dap_delay(cmd
->cmd
.sleep
->us
);
1325 if (retval
!= ERROR_OK
)
1327 jtag_sleep(cmd
->cmd
.sleep
->us
);
1330 /* Set TMS high for five TCK clocks, to move the TAP to the Test-Logic-Reset state */
1331 static int cmsis_dap_execute_tlr_reset(struct jtag_command
*cmd
)
1333 LOG_INFO("cmsis-dap JTAG TLR_RESET");
1336 int retval
= cmsis_dap_cmd_dap_swj_sequence(8, &seq
);
1337 if (retval
== ERROR_OK
)
1338 tap_set_state(TAP_RESET
);
1342 /* Set new end state */
1343 static void cmsis_dap_end_state(tap_state_t state
)
1345 if (tap_is_state_stable(state
))
1346 tap_set_end_state(state
);
1348 LOG_ERROR("BUG: %i is not a valid end state", state
);
1353 #ifdef SPRINT_BINARY
1354 static void sprint_binary(char *s
, const uint8_t *buf
, unsigned int offset
, unsigned int len
)
1360 buf = { 0x18 } len=5 should result in: 11000
1361 buf = { 0xff 0x18 } len=13 should result in: 11111111 11000
1362 buf = { 0xc0 0x18 } offset=3 len=10 should result in: 11000 11000
1363 i=3 there means i/8 = 0 so c = 0xFF, and
1365 for (unsigned int i
= offset
; i
< offset
+ len
; ++i
) {
1366 uint8_t c
= buf
[i
/ 8], mask
= 1 << (i
% 8);
1367 if ((i
!= offset
) && !(i
% 8))
1369 *s
++ = (c
& mask
) ? '1' : '0';
1375 #ifdef CMSIS_DAP_JTAG_DEBUG
1376 static void debug_parse_cmsis_buf(const uint8_t *cmd
, int cmdlen
)
1378 /* cmd is a usb packet to go to the cmsis-dap interface */
1379 printf("cmsis-dap buffer (%d b): ", cmdlen
);
1380 for (int i
= 0; i
< cmdlen
; ++i
)
1381 printf(" %02x", cmd
[i
]);
1384 case CMD_DAP_JTAG_SEQ
: {
1385 printf("cmsis-dap jtag sequence command %02x (n=%d)\n", cmd
[0], cmd
[1]);
1387 * #1 = number of sequences
1388 * #2 = sequence info 1
1389 * #3...4+n_bytes-1 = sequence 1
1390 * #4+n_bytes = sequence info 2
1391 * #5+n_bytes = sequence 2 (single bit)
1394 for (int seq
= 0; seq
< cmd
[1]; ++seq
) {
1395 uint8_t info
= cmd
[pos
++];
1396 int len
= info
& DAP_JTAG_SEQ_TCK
;
1399 printf(" sequence %d starting %d: info %02x (len=%d tms=%d read_tdo=%d): ",
1400 seq
, pos
, info
, len
, info
& DAP_JTAG_SEQ_TMS
, info
& DAP_JTAG_SEQ_TDO
);
1401 for (int i
= 0; i
< DIV_ROUND_UP(len
, 8); ++i
)
1402 printf(" %02x", cmd
[pos
+i
]);
1403 pos
+= DIV_ROUND_UP(len
, 8);
1406 if (pos
!= cmdlen
) {
1407 printf("BUFFER LENGTH MISMATCH looks like %d but %d specified", pos
, cmdlen
);
1414 LOG_DEBUG("unknown cmsis-dap command %02x", cmd
[1]);
1420 static void cmsis_dap_flush(void)
1422 if (!queued_seq_count
)
1425 LOG_DEBUG_IO("Flushing %d queued sequences (%d bytes) with %d pending scan results to capture",
1426 queued_seq_count
, queued_seq_buf_end
, pending_scan_result_count
);
1428 /* prepare CMSIS-DAP packet */
1429 uint8_t *command
= cmsis_dap_handle
->command
;
1430 command
[0] = CMD_DAP_JTAG_SEQ
;
1431 command
[1] = queued_seq_count
;
1432 memcpy(&command
[2], queued_seq_buf
, queued_seq_buf_end
);
1434 #ifdef CMSIS_DAP_JTAG_DEBUG
1435 debug_parse_cmsis_buf(command
, queued_seq_buf_end
+ 2);
1438 /* send command to USB device */
1439 int retval
= cmsis_dap_xfer(cmsis_dap_handle
, queued_seq_buf_end
+ 2);
1441 uint8_t *resp
= cmsis_dap_handle
->response
;
1442 if (retval
!= ERROR_OK
|| resp
[1] != DAP_OK
) {
1443 LOG_ERROR("CMSIS-DAP command CMD_DAP_JTAG_SEQ failed.");
1447 #ifdef CMSIS_DAP_JTAG_DEBUG
1448 LOG_DEBUG_IO("USB response buf:");
1449 for (int c
= 0; c
< queued_seq_buf_end
+ 3; ++c
)
1450 printf("%02X ", resp
[c
]);
1454 /* copy scan results into client buffers */
1455 for (int i
= 0; i
< pending_scan_result_count
; ++i
) {
1456 struct pending_scan_result
*scan
= &pending_scan_results
[i
];
1457 LOG_DEBUG_IO("Copying pending_scan_result %d/%d: %d bits from byte %d -> buffer + %d bits",
1458 i
, pending_scan_result_count
, scan
->length
, scan
->first
+ 2, scan
->buffer_offset
);
1459 #ifdef CMSIS_DAP_JTAG_DEBUG
1460 for (uint32_t b
= 0; b
< DIV_ROUND_UP(scan
->length
, 8); ++b
)
1461 printf("%02X ", resp
[2+scan
->first
+b
]);
1464 bit_copy(scan
->buffer
, scan
->buffer_offset
, &resp
[2 + scan
->first
], 0, scan
->length
);
1468 queued_seq_count
= 0;
1469 queued_seq_buf_end
= 0;
1470 queued_seq_tdo_ptr
= 0;
1471 pending_scan_result_count
= 0;
1474 /* queue a sequence of bits to clock out TDI / in TDO, executing if the buffer is full.
1476 * sequence=NULL means clock out zeros on TDI
1477 * tdo_buffer=NULL means don't capture TDO
1479 static void cmsis_dap_add_jtag_sequence(unsigned int s_len
, const uint8_t *sequence
,
1480 unsigned int s_offset
, bool tms
,
1481 uint8_t *tdo_buffer
, unsigned int tdo_buffer_offset
)
1483 LOG_DEBUG_IO("[at %d] %u bits, tms %s, seq offset %u, tdo buf %p, tdo offset %u",
1485 s_len
, tms
? "HIGH" : "LOW", s_offset
, tdo_buffer
, tdo_buffer_offset
);
1491 LOG_DEBUG_IO("START JTAG SEQ SPLIT");
1492 for (unsigned int offset
= 0; offset
< s_len
; offset
+= 64) {
1493 unsigned int len
= s_len
- offset
;
1496 LOG_DEBUG_IO("Splitting long jtag sequence: %u-bit chunk starting at offset %u", len
, offset
);
1497 cmsis_dap_add_jtag_sequence(
1503 !tdo_buffer
? 0 : (tdo_buffer_offset
+ offset
)
1506 LOG_DEBUG_IO("END JTAG SEQ SPLIT");
1510 unsigned int cmd_len
= 1 + DIV_ROUND_UP(s_len
, 8);
1511 if (queued_seq_count
>= 255 || queued_seq_buf_end
+ cmd_len
> QUEUED_SEQ_BUF_LEN
)
1512 /* empty out the buffer */
1518 queued_seq_buf
[queued_seq_buf_end
] =
1519 (tms
? DAP_JTAG_SEQ_TMS
: 0) |
1520 (tdo_buffer
? DAP_JTAG_SEQ_TDO
: 0) |
1521 (s_len
== 64 ? 0 : s_len
);
1524 bit_copy(&queued_seq_buf
[queued_seq_buf_end
+ 1], 0, sequence
, s_offset
, s_len
);
1526 memset(&queued_seq_buf
[queued_seq_buf_end
+ 1], 0, DIV_ROUND_UP(s_len
, 8));
1528 queued_seq_buf_end
+= cmd_len
;
1531 struct pending_scan_result
*scan
= &pending_scan_results
[pending_scan_result_count
++];
1532 scan
->first
= queued_seq_tdo_ptr
;
1533 queued_seq_tdo_ptr
+= DIV_ROUND_UP(s_len
, 8);
1534 scan
->length
= s_len
;
1535 scan
->buffer
= tdo_buffer
;
1536 scan
->buffer_offset
= tdo_buffer_offset
;
1540 /* queue a sequence of bits to clock out TMS, executing if the buffer is full */
1541 static void cmsis_dap_add_tms_sequence(const uint8_t *sequence
, int s_len
)
1543 LOG_DEBUG_IO("%d bits: %02X", s_len
, *sequence
);
1544 /* we use a series of CMD_DAP_JTAG_SEQ commands to toggle TMS,
1545 because even though it seems ridiculously inefficient, it
1546 allows us to combine TMS and scan sequences into the same
1548 /* TODO: combine runs of the same tms value */
1549 for (int i
= 0; i
< s_len
; ++i
) {
1550 bool bit
= (sequence
[i
/ 8] & (1 << (i
% 8))) != 0;
1551 cmsis_dap_add_jtag_sequence(1, NULL
, 0, bit
, NULL
, 0);
1555 /* Move to the end state by queuing a sequence to clock into TMS */
1556 static void cmsis_dap_state_move(void)
1558 uint8_t tms_scan
= tap_get_tms_path(tap_get_state(), tap_get_end_state());
1559 uint8_t tms_scan_bits
= tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
1561 LOG_DEBUG_IO("state move from %s to %s: %d clocks, %02X on tms",
1562 tap_state_name(tap_get_state()), tap_state_name(tap_get_end_state()),
1563 tms_scan_bits
, tms_scan
);
1564 cmsis_dap_add_tms_sequence(&tms_scan
, tms_scan_bits
);
1566 tap_set_state(tap_get_end_state());
1570 /* Execute a JTAG scan operation by queueing TMS and TDI/TDO sequences */
1571 static void cmsis_dap_execute_scan(struct jtag_command
*cmd
)
1573 LOG_DEBUG_IO("%s type:%d", cmd
->cmd
.scan
->ir_scan
? "IRSCAN" : "DRSCAN",
1574 jtag_scan_type(cmd
->cmd
.scan
));
1576 /* Make sure there are no trailing fields with num_bits == 0, or the logic below will fail. */
1577 while (cmd
->cmd
.scan
->num_fields
> 0
1578 && cmd
->cmd
.scan
->fields
[cmd
->cmd
.scan
->num_fields
- 1].num_bits
== 0) {
1579 cmd
->cmd
.scan
->num_fields
--;
1580 LOG_DEBUG("discarding trailing empty field");
1583 if (cmd
->cmd
.scan
->num_fields
== 0) {
1584 LOG_DEBUG("empty scan, doing nothing");
1588 if (cmd
->cmd
.scan
->ir_scan
) {
1589 if (tap_get_state() != TAP_IRSHIFT
) {
1590 cmsis_dap_end_state(TAP_IRSHIFT
);
1591 cmsis_dap_state_move();
1594 if (tap_get_state() != TAP_DRSHIFT
) {
1595 cmsis_dap_end_state(TAP_DRSHIFT
);
1596 cmsis_dap_state_move();
1600 cmsis_dap_end_state(cmd
->cmd
.scan
->end_state
);
1602 struct scan_field
*field
= cmd
->cmd
.scan
->fields
;
1603 unsigned scan_size
= 0;
1605 for (int i
= 0; i
< cmd
->cmd
.scan
->num_fields
; i
++, field
++) {
1606 scan_size
+= field
->num_bits
;
1607 LOG_DEBUG_IO("%s%s field %d/%d %d bits",
1608 field
->in_value
? "in" : "",
1609 field
->out_value
? "out" : "",
1611 cmd
->cmd
.scan
->num_fields
,
1614 if (i
== cmd
->cmd
.scan
->num_fields
- 1 && tap_get_state() != tap_get_end_state()) {
1615 LOG_DEBUG_IO("Last field and have to move out of SHIFT state");
1616 /* Last field, and we're leaving IRSHIFT/DRSHIFT. Clock last bit during tap
1617 * movement. This last field can't have length zero, it was checked above. */
1618 cmsis_dap_add_jtag_sequence(
1619 field
->num_bits
- 1, /* number of bits to clock */
1620 field
->out_value
, /* output sequence */
1621 0, /* output offset */
1622 false, /* TMS low */
1626 /* Clock the last bit out, with TMS high */
1627 uint8_t last_bit
= 0;
1628 if (field
->out_value
)
1629 bit_copy(&last_bit
, 0, field
->out_value
, field
->num_bits
- 1, 1);
1630 cmsis_dap_add_jtag_sequence(
1636 field
->num_bits
- 1);
1637 tap_set_state(tap_state_transition(tap_get_state(), 1));
1639 /* Now clock one more cycle, with TMS low, to get us into a PAUSE state */
1640 cmsis_dap_add_jtag_sequence(
1647 tap_set_state(tap_state_transition(tap_get_state(), 0));
1649 LOG_DEBUG_IO("Internal field, staying in SHIFT state afterwards");
1650 /* Clocking part of a sequence into DR or IR with TMS=0,
1651 leaving TMS=0 at the end so we can continue later */
1652 cmsis_dap_add_jtag_sequence(
1662 if (tap_get_state() != tap_get_end_state()) {
1663 cmsis_dap_end_state(tap_get_end_state());
1664 cmsis_dap_state_move();
1667 LOG_DEBUG_IO("%s scan, %i bits, end in %s",
1668 (cmd
->cmd
.scan
->ir_scan
) ? "IR" : "DR", scan_size
,
1669 tap_state_name(tap_get_end_state()));
1672 static void cmsis_dap_pathmove(int num_states
, tap_state_t
*path
)
1674 uint8_t tms0
= 0x00;
1675 uint8_t tms1
= 0xff;
1677 for (int i
= 0; i
< num_states
; i
++) {
1678 if (path
[i
] == tap_state_transition(tap_get_state(), false))
1679 cmsis_dap_add_tms_sequence(&tms0
, 1);
1680 else if (path
[i
] == tap_state_transition(tap_get_state(), true))
1681 cmsis_dap_add_tms_sequence(&tms1
, 1);
1683 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition.",
1684 tap_state_name(tap_get_state()), tap_state_name(path
[i
]));
1688 tap_set_state(path
[i
]);
1691 cmsis_dap_end_state(tap_get_state());
1694 static void cmsis_dap_execute_pathmove(struct jtag_command
*cmd
)
1696 LOG_DEBUG_IO("pathmove: %i states, end in %i",
1697 cmd
->cmd
.pathmove
->num_states
,
1698 cmd
->cmd
.pathmove
->path
[cmd
->cmd
.pathmove
->num_states
- 1]);
1700 cmsis_dap_pathmove(cmd
->cmd
.pathmove
->num_states
, cmd
->cmd
.pathmove
->path
);
1703 static void cmsis_dap_stableclocks(int num_cycles
)
1705 uint8_t tms
= tap_get_state() == TAP_RESET
;
1706 /* TODO: Perform optimizations? */
1707 /* Execute num_cycles. */
1708 for (int i
= 0; i
< num_cycles
; i
++)
1709 cmsis_dap_add_tms_sequence(&tms
, 1);
1712 static void cmsis_dap_runtest(int num_cycles
)
1714 tap_state_t saved_end_state
= tap_get_end_state();
1716 /* Only do a state_move when we're not already in IDLE. */
1717 if (tap_get_state() != TAP_IDLE
) {
1718 cmsis_dap_end_state(TAP_IDLE
);
1719 cmsis_dap_state_move();
1721 cmsis_dap_stableclocks(num_cycles
);
1723 /* Finish in end_state. */
1724 cmsis_dap_end_state(saved_end_state
);
1726 if (tap_get_state() != tap_get_end_state())
1727 cmsis_dap_state_move();
1730 static void cmsis_dap_execute_runtest(struct jtag_command
*cmd
)
1732 LOG_DEBUG_IO("runtest %i cycles, end in %i", cmd
->cmd
.runtest
->num_cycles
,
1733 cmd
->cmd
.runtest
->end_state
);
1735 cmsis_dap_end_state(cmd
->cmd
.runtest
->end_state
);
1736 cmsis_dap_runtest(cmd
->cmd
.runtest
->num_cycles
);
1739 static void cmsis_dap_execute_stableclocks(struct jtag_command
*cmd
)
1741 LOG_DEBUG_IO("stableclocks %i cycles", cmd
->cmd
.runtest
->num_cycles
);
1742 cmsis_dap_stableclocks(cmd
->cmd
.runtest
->num_cycles
);
1745 static void cmsis_dap_execute_tms(struct jtag_command
*cmd
)
1747 LOG_DEBUG_IO("TMS: %d bits", cmd
->cmd
.tms
->num_bits
);
1748 cmsis_dap_cmd_dap_swj_sequence(cmd
->cmd
.tms
->num_bits
, cmd
->cmd
.tms
->bits
);
1751 /* TODO: Is there need to call cmsis_dap_flush() for the JTAG_PATHMOVE,
1752 * JTAG_RUNTEST, JTAG_STABLECLOCKS? */
1753 static void cmsis_dap_execute_command(struct jtag_command
*cmd
)
1755 switch (cmd
->type
) {
1758 cmsis_dap_execute_sleep(cmd
);
1760 case JTAG_TLR_RESET
:
1762 cmsis_dap_execute_tlr_reset(cmd
);
1765 cmsis_dap_execute_scan(cmd
);
1768 cmsis_dap_execute_pathmove(cmd
);
1771 cmsis_dap_execute_runtest(cmd
);
1773 case JTAG_STABLECLOCKS
:
1774 cmsis_dap_execute_stableclocks(cmd
);
1777 cmsis_dap_execute_tms(cmd
);
1780 LOG_ERROR("BUG: unknown JTAG command type 0x%X encountered", cmd
->type
);
1785 static int cmsis_dap_execute_queue(void)
1787 struct jtag_command
*cmd
= jtag_command_queue
;
1790 cmsis_dap_execute_command(cmd
);
1799 static int cmsis_dap_speed(int speed
)
1802 LOG_ERROR("RTCK not supported. Set nonzero \"adapter speed\".");
1803 return ERROR_JTAG_NOT_IMPLEMENTED
;
1806 return cmsis_dap_cmd_dap_swj_clock(speed
);
1809 static int cmsis_dap_speed_div(int speed
, int *khz
)
1815 static int cmsis_dap_khz(int khz
, int *jtag_speed
)
1821 static bool calculate_swo_prescaler(unsigned int traceclkin_freq
,
1822 uint32_t trace_freq
, uint16_t *prescaler
)
1824 unsigned int presc
= (traceclkin_freq
+ trace_freq
/ 2) / trace_freq
;
1825 if (presc
== 0 || presc
> TPIU_ACPR_MAX_SWOSCALER
+ 1)
1828 /* Probe's UART speed must be within 3% of the TPIU's SWO baud rate. */
1829 unsigned int max_deviation
= (traceclkin_freq
* 3) / 100;
1830 if (presc
* trace_freq
< traceclkin_freq
- max_deviation
||
1831 presc
* trace_freq
> traceclkin_freq
+ max_deviation
)
1840 * @see adapter_driver::config_trace
1842 static int cmsis_dap_config_trace(
1844 enum tpiu_pin_protocol pin_protocol
,
1846 unsigned int *swo_freq
,
1847 unsigned int traceclkin_hz
,
1848 uint16_t *swo_prescaler
)
1852 if (!trace_enabled
) {
1853 if (cmsis_dap_handle
->trace_enabled
) {
1854 retval
= cmsis_dap_cmd_dap_swo_control(DAP_SWO_CONTROL_STOP
);
1855 if (retval
!= ERROR_OK
) {
1856 LOG_ERROR("Failed to disable the SWO-trace.");
1860 cmsis_dap_handle
->trace_enabled
= false;
1861 LOG_INFO("SWO-trace disabled.");
1865 if (!(cmsis_dap_handle
->caps
& INFO_CAPS_SWO_UART
) &&
1866 !(cmsis_dap_handle
->caps
& INFO_CAPS_SWO_MANCHESTER
)) {
1867 LOG_ERROR("SWO-trace is not supported by the device.");
1872 if (pin_protocol
== TPIU_PIN_PROTOCOL_ASYNC_UART
&&
1873 (cmsis_dap_handle
->caps
& INFO_CAPS_SWO_UART
)) {
1874 swo_mode
= DAP_SWO_MODE_UART
;
1875 } else if (pin_protocol
== TPIU_PIN_PROTOCOL_ASYNC_MANCHESTER
&&
1876 (cmsis_dap_handle
->caps
& INFO_CAPS_SWO_MANCHESTER
)) {
1877 swo_mode
= DAP_SWO_MODE_MANCHESTER
;
1879 LOG_ERROR("Selected pin protocol is not supported.");
1883 if (*swo_freq
== 0) {
1884 LOG_INFO("SWO-trace frequency autodetection not implemented.");
1888 retval
= cmsis_dap_cmd_dap_swo_control(DAP_SWO_CONTROL_STOP
);
1889 if (retval
!= ERROR_OK
)
1892 cmsis_dap_handle
->trace_enabled
= false;
1894 retval
= cmsis_dap_get_swo_buf_sz(&cmsis_dap_handle
->swo_buf_sz
);
1895 if (retval
!= ERROR_OK
)
1898 retval
= cmsis_dap_cmd_dap_swo_transport(DAP_SWO_TRANSPORT_DATA
);
1899 if (retval
!= ERROR_OK
)
1902 retval
= cmsis_dap_cmd_dap_swo_mode(swo_mode
);
1903 if (retval
!= ERROR_OK
)
1906 retval
= cmsis_dap_cmd_dap_swo_baudrate(*swo_freq
, swo_freq
);
1907 if (retval
!= ERROR_OK
)
1910 if (!calculate_swo_prescaler(traceclkin_hz
, *swo_freq
,
1912 LOG_ERROR("SWO frequency is not suitable. Please choose a "
1913 "different frequency or use auto-detection.");
1917 LOG_INFO("SWO frequency: %u Hz.", *swo_freq
);
1918 LOG_INFO("SWO prescaler: %u.", *swo_prescaler
);
1920 retval
= cmsis_dap_cmd_dap_swo_control(DAP_SWO_CONTROL_START
);
1921 if (retval
!= ERROR_OK
)
1924 cmsis_dap_handle
->trace_enabled
= true;
1930 * @see adapter_driver::poll_trace
1932 static int cmsis_dap_poll_trace(uint8_t *buf
, size_t *size
)
1934 uint8_t trace_status
;
1937 if (!cmsis_dap_handle
->trace_enabled
) {
1942 int retval
= cmsis_dap_cmd_dap_swo_status(&trace_status
, &trace_count
);
1943 if (retval
!= ERROR_OK
)
1945 if ((trace_status
& DAP_SWO_STATUS_CAPTURE_MASK
) != DAP_SWO_STATUS_CAPTURE_ACTIVE
)
1948 *size
= trace_count
< *size
? trace_count
: *size
;
1949 size_t read_so_far
= 0;
1952 uint32_t packet_size
= cmsis_dap_handle
->packet_size
- 4 /*data-reply*/;
1953 uint32_t remaining
= *size
- read_so_far
;
1954 if (remaining
< packet_size
)
1955 packet_size
= remaining
;
1956 retval
= cmsis_dap_cmd_dap_swo_data(
1961 if (retval
!= ERROR_OK
)
1963 if ((trace_status
& DAP_SWO_STATUS_CAPTURE_MASK
) != DAP_SWO_STATUS_CAPTURE_ACTIVE
)
1967 } while (read_so_far
< *size
);
1972 COMMAND_HANDLER(cmsis_dap_handle_info_command
)
1974 if (cmsis_dap_get_version_info() == ERROR_OK
)
1975 cmsis_dap_get_status();
1980 COMMAND_HANDLER(cmsis_dap_handle_cmd_command
)
1982 uint8_t *command
= cmsis_dap_handle
->command
;
1984 for (unsigned i
= 0; i
< CMD_ARGC
; i
++)
1985 COMMAND_PARSE_NUMBER(u8
, CMD_ARGV
[i
], command
[i
]);
1987 int retval
= cmsis_dap_xfer(cmsis_dap_handle
, CMD_ARGC
);
1989 if (retval
!= ERROR_OK
) {
1990 LOG_ERROR("CMSIS-DAP command failed.");
1991 return ERROR_JTAG_DEVICE_ERROR
;
1994 uint8_t *resp
= cmsis_dap_handle
->response
;
1995 LOG_INFO("Returned data %02" PRIx8
" %02" PRIx8
" %02" PRIx8
" %02" PRIx8
,
1996 resp
[1], resp
[2], resp
[3], resp
[4]);
2001 COMMAND_HANDLER(cmsis_dap_handle_vid_pid_command
)
2003 if (CMD_ARGC
> MAX_USB_IDS
* 2) {
2004 LOG_WARNING("ignoring extra IDs in cmsis_dap_vid_pid "
2005 "(maximum is %d pairs)", MAX_USB_IDS
);
2006 CMD_ARGC
= MAX_USB_IDS
* 2;
2008 if (CMD_ARGC
< 2 || (CMD_ARGC
& 1)) {
2009 LOG_WARNING("incomplete cmsis_dap_vid_pid configuration directive");
2011 return ERROR_COMMAND_SYNTAX_ERROR
;
2012 /* remove the incomplete trailing id */
2017 for (i
= 0; i
< CMD_ARGC
; i
+= 2) {
2018 COMMAND_PARSE_NUMBER(u16
, CMD_ARGV
[i
], cmsis_dap_vid
[i
>> 1]);
2019 COMMAND_PARSE_NUMBER(u16
, CMD_ARGV
[i
+ 1], cmsis_dap_pid
[i
>> 1]);
2023 * Explicitly terminate, in case there are multiples instances of
2024 * cmsis_dap_vid_pid.
2026 cmsis_dap_vid
[i
>> 1] = cmsis_dap_pid
[i
>> 1] = 0;
2031 COMMAND_HANDLER(cmsis_dap_handle_backend_command
)
2033 if (CMD_ARGC
== 1) {
2034 if (strcmp(CMD_ARGV
[0], "auto") == 0) {
2035 cmsis_dap_backend
= -1; /* autoselect */
2037 for (unsigned int i
= 0; i
< ARRAY_SIZE(cmsis_dap_backends
); i
++) {
2038 if (strcasecmp(cmsis_dap_backends
[i
]->name
, CMD_ARGV
[0]) == 0) {
2039 cmsis_dap_backend
= i
;
2044 LOG_ERROR("invalid backend argument to cmsis_dap_backend <backend>");
2047 LOG_ERROR("expected exactly one argument to cmsis_dap_backend <backend>");
2053 static const struct command_registration cmsis_dap_subcommand_handlers
[] = {
2056 .handler
= &cmsis_dap_handle_info_command
,
2057 .mode
= COMMAND_EXEC
,
2059 .help
= "show cmsis-dap info",
2063 .handler
= &cmsis_dap_handle_cmd_command
,
2064 .mode
= COMMAND_EXEC
,
2066 .help
= "issue cmsis-dap command",
2068 COMMAND_REGISTRATION_DONE
2072 static const struct command_registration cmsis_dap_command_handlers
[] = {
2074 .name
= "cmsis-dap",
2075 .mode
= COMMAND_ANY
,
2076 .help
= "perform CMSIS-DAP management",
2078 .chain
= cmsis_dap_subcommand_handlers
,
2081 .name
= "cmsis_dap_vid_pid",
2082 .handler
= &cmsis_dap_handle_vid_pid_command
,
2083 .mode
= COMMAND_CONFIG
,
2084 .help
= "the vendor ID and product ID of the CMSIS-DAP device",
2085 .usage
= "(vid pid)*",
2088 .name
= "cmsis_dap_backend",
2089 .handler
= &cmsis_dap_handle_backend_command
,
2090 .mode
= COMMAND_CONFIG
,
2091 .help
= "set the communication backend to use (USB bulk or HID).",
2092 .usage
= "(auto | usb_bulk | hid)",
2094 #if BUILD_CMSIS_DAP_USB
2096 .name
= "cmsis_dap_usb",
2097 .chain
= cmsis_dap_usb_subcommand_handlers
,
2098 .mode
= COMMAND_ANY
,
2099 .help
= "USB bulk backend-specific commands",
2103 COMMAND_REGISTRATION_DONE
2106 static const struct swd_driver cmsis_dap_swd_driver
= {
2107 .init
= cmsis_dap_swd_init
,
2108 .switch_seq
= cmsis_dap_swd_switch_seq
,
2109 .read_reg
= cmsis_dap_swd_read_reg
,
2110 .write_reg
= cmsis_dap_swd_write_reg
,
2111 .run
= cmsis_dap_swd_run_queue
,
2114 static const char * const cmsis_dap_transport
[] = { "swd", "jtag", NULL
};
2116 static struct jtag_interface cmsis_dap_interface
= {
2117 .supported
= DEBUG_CAP_TMS_SEQ
,
2118 .execute_queue
= cmsis_dap_execute_queue
,
2121 struct adapter_driver cmsis_dap_adapter_driver
= {
2122 .name
= "cmsis-dap",
2123 .transports
= cmsis_dap_transport
,
2124 .commands
= cmsis_dap_command_handlers
,
2126 .init
= cmsis_dap_init
,
2127 .quit
= cmsis_dap_quit
,
2128 .reset
= cmsis_dap_reset
,
2129 .speed
= cmsis_dap_speed
,
2130 .khz
= cmsis_dap_khz
,
2131 .speed_div
= cmsis_dap_speed_div
,
2132 .config_trace
= cmsis_dap_config_trace
,
2133 .poll_trace
= cmsis_dap_poll_trace
,
2135 .jtag_ops
= &cmsis_dap_interface
,
2136 .swd_ops
= &cmsis_dap_swd_driver
,
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