1 /***************************************************************************
2 * Copyright (C) 2013 by mike brown *
3 * mike@theshedworks.org.uk *
5 * Copyright (C) 2013 by Spencer Oliver *
6 * spen@spen-soft.co.uk *
8 * This program is free software; you can redistribute it and/or modify *
9 * it under the terms of the GNU General Public License as published by *
10 * the Free Software Foundation; either version 2 of the License, or *
11 * (at your option) any later version. *
13 * This program is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License for more details. *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program; if not, write to the *
20 * Free Software Foundation, Inc., *
21 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
22 ***************************************************************************/
28 #include <transport/transport.h>
30 #include <jtag/interface.h>
31 #include <jtag/commands.h>
36 #ifdef _DEBUG_JTAG_IO_
37 #define DEBUG_IO(expr...) LOG_DEBUG(expr)
39 #define DEBUG_IO(expr...) do {} while (0)
43 * See CMSIS-DAP documentation:
44 * Version 0.01 - Beta.
49 /* Known vid/pid pairs:
50 * VID 0xc251: Keil Software
51 * PID 0xf001: LPC-Link-II CMSIS_DAP
52 * PID 0xf002: OPEN-SDA CMSIS_DAP (Freedom Board)
53 * PID 0x2722: Keil ULINK2 CMSIS-DAP
55 * VID 0x0d28: mbed Software
56 * PID 0x0204: MBED CMSIS-DAP
60 /* vid = pid = 0 marks the end of the list */
61 static uint16_t cmsis_dap_vid
[MAX_USB_IDS
+ 1] = { 0 };
62 static uint16_t cmsis_dap_pid
[MAX_USB_IDS
+ 1] = { 0 };
64 #define PACKET_SIZE (64 + 1) /* 64 bytes plus report id */
65 #define USB_TIMEOUT 1000
67 /* CMSIS-DAP General Commands */
68 #define CMD_DAP_INFO 0x00
69 #define CMD_DAP_LED 0x01
70 #define CMD_DAP_CONNECT 0x02
71 #define CMD_DAP_DISCONNECT 0x03
72 #define CMD_DAP_WRITE_ABORT 0x08
73 #define CMD_DAP_DELAY 0x09
74 #define CMD_DAP_RESET_TARGET 0x0A
77 #define INFO_ID_VID 0x00 /* string */
78 #define INFO_ID_PID 0x02 /* string */
79 #define INFO_ID_SERNUM 0x03 /* string */
80 #define INFO_ID_FW_VER 0x04 /* string */
81 #define INFO_ID_TD_VEND 0x05 /* string */
82 #define INFO_ID_TD_NAME 0x06 /* string */
83 #define INFO_ID_CAPS 0xf0 /* byte */
84 #define INFO_ID_PKT_CNT 0xfe /* byte */
85 #define INFO_ID_PKT_SZ 0xff /* short */
87 #define INFO_CAPS_SWD 0x01
88 #define INFO_CAPS_JTAG 0x02
91 #define LED_ID_CONNECT 0x00
92 #define LED_ID_RUN 0x01
98 #define CONNECT_DEFAULT 0x00
99 #define CONNECT_SWD 0x01
100 #define CONNECT_JTAG 0x02
102 /* CMSIS-DAP Common SWD/JTAG Commands */
103 #define CMD_DAP_DELAY 0x09
104 #define CMD_DAP_SWJ_PINS 0x10
105 #define CMD_DAP_SWJ_CLOCK 0x11
106 #define CMD_DAP_SWJ_SEQ 0x12
118 /* CMSIS-DAP SWD Commands */
119 #define CMD_DAP_SWD_CONFIGURE 0x13
121 /* CMSIS-DAP JTAG Commands */
122 #define CMD_DAP_JTAG_SEQ 0x14
123 #define CMD_DAP_JTAG_CONFIGURE 0x15
124 #define CMD_DAP_JTAG_IDCODE 0x16
126 /* CMSIS-DAP Transfer Commands */
127 #define CMD_DAP_TFER_CONFIGURE 0x04
128 #define CMD_DAP_TFER 0x05
129 #define CMD_DAP_TFER_BLOCK 0x06
130 #define CMD_DAP_TFER_ABORT 0x07
132 /* DAP Status Code */
134 #define DAP_ERROR 0xFF
136 /* CMSIS-DAP Vendor Commands
139 static char *info_caps_str
[] = {
144 /* max clock speed (kHz) */
145 #define DAP_MAX_CLOCK 5000
148 hid_device
*dev_handle
;
149 uint16_t packet_size
;
150 uint16_t packet_count
;
151 uint8_t *packet_buffer
;
156 static struct cmsis_dap
*cmsis_dap_handle
;
158 static int cmsis_dap_usb_open(void)
160 hid_device
*dev
= NULL
;
162 struct hid_device_info
*devs
, *cur_dev
;
163 unsigned short target_vid
, target_pid
;
169 The CMSIS-DAP specification stipulates:
170 "The Product String must contain "CMSIS-DAP" somewhere in the string. This is used by the
171 debuggers to idenify a CMSIS-DAP compliant Debug Unit that is connected to a host computer."
173 devs
= hid_enumerate(0x0, 0x0);
175 while (NULL
!= cur_dev
) {
176 if (0 == cmsis_dap_vid
[0]) {
177 if (NULL
== cur_dev
->product_string
) {
178 LOG_DEBUG("Cannot read product string of device 0x%x:0x%x",
179 cur_dev
->vendor_id
, cur_dev
->product_id
);
181 if (wcsstr(cur_dev
->product_string
, L
"CMSIS-DAP"))
183 if the user hasn't specified VID:PID *and*
184 product string contains "CMSIS-DAP", pick it
190 otherwise, exhaustively compare against all VID:PID in list
192 for (i
= 0; cmsis_dap_vid
[i
] || cmsis_dap_pid
[i
]; i
++) {
193 if ((cmsis_dap_vid
[i
] == cur_dev
->vendor_id
) && (cmsis_dap_pid
[i
] == cur_dev
->product_id
))
198 cur_dev
= cur_dev
->next
;
201 if (NULL
!= cur_dev
) {
202 target_vid
= cur_dev
->vendor_id
;
203 target_pid
= cur_dev
->product_id
;
206 hid_free_enumeration(devs
);
208 if (hid_init() != 0) {
209 LOG_ERROR("unable to open HIDAPI");
213 dev
= hid_open(target_vid
, target_pid
, NULL
);
216 LOG_ERROR("unable to open CMSIS-DAP device");
220 struct cmsis_dap
*dap
= malloc(sizeof(struct cmsis_dap
));
222 LOG_ERROR("unable to allocate memory");
226 dap
->dev_handle
= dev
;
230 cmsis_dap_handle
= dap
;
232 /* allocate default packet buffer, may be changed later.
233 * currently with HIDAPI we have no way of getting the output report length
234 * without this info we cannot communicate with the adapter.
235 * For the moment we ahve to hard code the packet size */
237 int packet_size
= PACKET_SIZE
;
239 /* atmel cmsis-dap uses 512 byte reports */
240 if (target_vid
== 0x03eb)
241 packet_size
= 512 + 1;
243 cmsis_dap_handle
->packet_buffer
= malloc(packet_size
);
244 cmsis_dap_handle
->packet_size
= packet_size
;
246 if (cmsis_dap_handle
->packet_buffer
== NULL
) {
247 LOG_ERROR("unable to allocate memory");
254 static void cmsis_dap_usb_close(struct cmsis_dap
*dap
)
256 hid_close(dap
->dev_handle
);
259 if (cmsis_dap_handle
->packet_buffer
)
260 free(cmsis_dap_handle
->packet_buffer
);
262 if (cmsis_dap_handle
) {
263 free(cmsis_dap_handle
);
264 cmsis_dap_handle
= NULL
;
270 /* Send a message and receive the reply */
271 static int cmsis_dap_usb_xfer(struct cmsis_dap
*dap
, int txlen
)
273 /* Pad the rest of the TX buffer with 0's */
274 memset(dap
->packet_buffer
+ txlen
, 0, dap
->packet_size
- 1 - txlen
);
276 /* write data to device */
277 int retval
= hid_write(dap
->dev_handle
, dap
->packet_buffer
, dap
->packet_size
);
279 LOG_ERROR("error writing data: %ls", hid_error(dap
->dev_handle
));
284 retval
= hid_read_timeout(dap
->dev_handle
, dap
->packet_buffer
, dap
->packet_size
, USB_TIMEOUT
);
285 if (retval
== -1 || retval
== 0) {
286 LOG_DEBUG("error reading data: %ls", hid_error(dap
->dev_handle
));
293 static int cmsis_dap_cmd_DAP_SWJ_Pins(uint8_t pins
, uint8_t mask
, uint32_t delay
, uint8_t *input
)
296 uint8_t *buffer
= cmsis_dap_handle
->packet_buffer
;
298 buffer
[0] = 0; /* report number */
299 buffer
[1] = CMD_DAP_SWJ_PINS
;
302 buffer
[4] = delay
& 0xff;
303 buffer
[5] = (delay
>> 8) & 0xff;
304 buffer
[6] = (delay
>> 16) & 0xff;
305 buffer
[7] = (delay
>> 24) & 0xff;
306 retval
= cmsis_dap_usb_xfer(cmsis_dap_handle
, 8);
308 if (retval
!= ERROR_OK
) {
309 LOG_ERROR("CMSIS-DAP command CMD_DAP_SWJ_PINS failed.");
310 return ERROR_JTAG_DEVICE_ERROR
;
319 static int cmsis_dap_cmd_DAP_SWJ_Clock(uint32_t swj_clock
)
322 uint8_t *buffer
= cmsis_dap_handle
->packet_buffer
;
324 /* set clock in Hz */
326 buffer
[0] = 0; /* report number */
327 buffer
[1] = CMD_DAP_SWJ_CLOCK
;
328 buffer
[2] = swj_clock
& 0xff;
329 buffer
[3] = (swj_clock
>> 8) & 0xff;
330 buffer
[4] = (swj_clock
>> 16) & 0xff;
331 buffer
[5] = (swj_clock
>> 24) & 0xff;
332 retval
= cmsis_dap_usb_xfer(cmsis_dap_handle
, 6);
334 if (retval
!= ERROR_OK
|| buffer
[1] != DAP_OK
) {
335 LOG_ERROR("CMSIS-DAP command CMD_DAP_SWJ_CLOCK failed.");
336 return ERROR_JTAG_DEVICE_ERROR
;
342 static int cmsis_dap_cmd_DAP_Info(uint8_t info
, uint8_t **data
)
345 uint8_t *buffer
= cmsis_dap_handle
->packet_buffer
;
347 buffer
[0] = 0; /* report number */
348 buffer
[1] = CMD_DAP_INFO
;
350 retval
= cmsis_dap_usb_xfer(cmsis_dap_handle
, 3);
352 if (retval
!= ERROR_OK
) {
353 LOG_ERROR("CMSIS-DAP command CMD_INFO failed.");
354 return ERROR_JTAG_DEVICE_ERROR
;
357 *data
= &(buffer
[1]);
362 static int cmsis_dap_cmd_DAP_LED(uint8_t leds
)
365 uint8_t *buffer
= cmsis_dap_handle
->packet_buffer
;
367 buffer
[0] = 0; /* report number */
368 buffer
[1] = CMD_DAP_LED
;
371 retval
= cmsis_dap_usb_xfer(cmsis_dap_handle
, 4);
373 if (retval
!= ERROR_OK
|| buffer
[1] != 0x00) {
374 LOG_ERROR("CMSIS-DAP command CMD_LED failed.");
375 return ERROR_JTAG_DEVICE_ERROR
;
381 static int cmsis_dap_cmd_DAP_Connect(uint8_t mode
)
384 uint8_t *buffer
= cmsis_dap_handle
->packet_buffer
;
386 buffer
[0] = 0; /* report number */
387 buffer
[1] = CMD_DAP_CONNECT
;
389 retval
= cmsis_dap_usb_xfer(cmsis_dap_handle
, 3);
391 if (retval
!= ERROR_OK
) {
392 LOG_ERROR("CMSIS-DAP command CMD_CONNECT failed.");
393 return ERROR_JTAG_DEVICE_ERROR
;
396 if (buffer
[1] != mode
) {
397 LOG_ERROR("CMSIS-DAP failed to connect in mode (%d)", mode
);
398 return ERROR_JTAG_DEVICE_ERROR
;
404 static int cmsis_dap_cmd_DAP_Disconnect(void)
407 uint8_t *buffer
= cmsis_dap_handle
->packet_buffer
;
409 buffer
[0] = 0; /* report number */
410 buffer
[1] = CMD_DAP_DISCONNECT
;
411 retval
= cmsis_dap_usb_xfer(cmsis_dap_handle
, 2);
413 if (retval
!= ERROR_OK
|| buffer
[1] != DAP_OK
) {
414 LOG_ERROR("CMSIS-DAP command CMD_DISCONNECT failed.");
415 return ERROR_JTAG_DEVICE_ERROR
;
421 static int cmsis_dap_cmd_DAP_TFER_Configure(uint8_t idle
, uint16_t delay
, uint16_t retry
)
424 uint8_t *buffer
= cmsis_dap_handle
->packet_buffer
;
426 buffer
[0] = 0; /* report number */
427 buffer
[1] = CMD_DAP_TFER_CONFIGURE
;
429 buffer
[3] = delay
& 0xff;
430 buffer
[4] = (delay
>> 8) & 0xff;
431 buffer
[5] = retry
& 0xff;
432 buffer
[6] = (retry
>> 8) & 0xff;
433 retval
= cmsis_dap_usb_xfer(cmsis_dap_handle
, 7);
435 if (retval
!= ERROR_OK
|| buffer
[1] != DAP_OK
) {
436 LOG_ERROR("CMSIS-DAP command CMD_TFER_Configure failed.");
437 return ERROR_JTAG_DEVICE_ERROR
;
443 static int cmsis_dap_cmd_DAP_SWD_Configure(uint8_t cfg
)
446 uint8_t *buffer
= cmsis_dap_handle
->packet_buffer
;
448 buffer
[0] = 0; /* report number */
449 buffer
[1] = CMD_DAP_SWD_CONFIGURE
;
451 retval
= cmsis_dap_usb_xfer(cmsis_dap_handle
, 3);
453 if (retval
!= ERROR_OK
|| buffer
[1] != DAP_OK
) {
454 LOG_ERROR("CMSIS-DAP command CMD_SWD_Configure failed.");
455 return ERROR_JTAG_DEVICE_ERROR
;
462 static int cmsis_dap_cmd_DAP_Delay(uint16_t delay_us
)
465 uint8_t *buffer
= cmsis_dap_handle
->packet_buffer
;
467 buffer
[0] = 0; /* report number */
468 buffer
[1] = CMD_DAP_DELAY
;
469 buffer
[2] = delay_us
& 0xff;
470 buffer
[3] = (delay_us
>> 8) & 0xff;
471 retval
= cmsis_dap_usb_xfer(cmsis_dap_handle
, 4);
473 if (retval
!= ERROR_OK
|| buffer
[1] != DAP_OK
) {
474 LOG_ERROR("CMSIS-DAP command CMD_Delay failed.");
475 return ERROR_JTAG_DEVICE_ERROR
;
482 static int cmsis_dap_swd_read_reg(uint8_t cmd
, uint32_t *value
)
484 uint8_t *buffer
= cmsis_dap_handle
->packet_buffer
;
488 DEBUG_IO("CMSIS-DAP: Read Reg 0x%02" PRIx8
, cmd
);
490 buffer
[0] = 0; /* report number */
491 buffer
[1] = CMD_DAP_TFER
;
495 retval
= cmsis_dap_usb_xfer(cmsis_dap_handle
, 5);
497 /* TODO - need better response checking */
498 if (retval
!= ERROR_OK
|| buffer
[1] != 0x01) {
499 LOG_ERROR("CMSIS-DAP: Read Error (0x%02" PRIx8
")", buffer
[2]);
503 val
= le_to_h_u32(&buffer
[3]);
504 DEBUG_IO("0x%08" PRIx32
, val
);
512 static int cmsis_dap_swd_write_reg(uint8_t cmd
, uint32_t value
)
514 uint8_t *buffer
= cmsis_dap_handle
->packet_buffer
;
516 DEBUG_IO("CMSIS-DAP: Write Reg 0x%02" PRIx8
" 0x%08" PRIx32
, cmd
, value
);
518 buffer
[0] = 0; /* report number */
519 buffer
[1] = CMD_DAP_TFER
;
523 buffer
[5] = (value
) & 0xff;
524 buffer
[6] = (value
>> 8) & 0xff;
525 buffer
[7] = (value
>> 16) & 0xff;
526 buffer
[8] = (value
>> 24) & 0xff;
527 int retval
= cmsis_dap_usb_xfer(cmsis_dap_handle
, 9);
529 if (buffer
[1] != 0x01) {
530 LOG_ERROR("CMSIS-DAP: Write Error (0x%02" PRIx8
")", buffer
[2]);
537 static int cmsis_dap_swd_read_block(uint8_t cmd
, uint32_t blocksize
, uint8_t *dest_buf
)
541 int retval
= ERROR_OK
;
544 DEBUG_IO("CMSIS-DAP: Read Block 0x%02" PRIx8
" %" PRIu32
, cmd
, blocksize
);
548 buffer
= cmsis_dap_handle
->packet_buffer
;
553 buffer
[0] = 0; /* report number */
554 buffer
[1] = CMD_DAP_TFER_BLOCK
;
559 retval
= cmsis_dap_usb_xfer(cmsis_dap_handle
, 6);
561 read_count
= le_to_h_u16(&buffer
[1]);
562 if (read_count
!= tfer_sz
) {
563 LOG_ERROR("CMSIS-DAP: Block Read Error (0x%02" PRIx8
")", buffer
[3]);
568 memcpy(dest_buf
, &buffer
[4], read_count
);
570 dest_buf
+= read_count
;
571 blocksize
-= tfer_sz
;
577 static int cmsis_dap_get_version_info(void)
581 /* INFO_ID_FW_VER - string */
582 int retval
= cmsis_dap_cmd_DAP_Info(INFO_ID_FW_VER
, &data
);
583 if (retval
!= ERROR_OK
)
586 if (data
[0]) /* strlen */
587 LOG_INFO("CMSIS-DAP: FW Version = %s", &data
[1]);
592 static int cmsis_dap_get_caps_info(void)
596 /* INFO_ID_CAPS - byte */
597 int retval
= cmsis_dap_cmd_DAP_Info(INFO_ID_CAPS
, &data
);
598 if (retval
!= ERROR_OK
)
602 uint8_t caps
= data
[1];
604 cmsis_dap_handle
->caps
= caps
;
606 if (caps
& INFO_CAPS_SWD
)
607 LOG_INFO("CMSIS-DAP: %s", info_caps_str
[0]);
608 if (caps
& INFO_CAPS_JTAG
)
609 LOG_INFO("CMSIS-DAP: %s", info_caps_str
[1]);
615 static int cmsis_dap_get_status(void)
619 int retval
= cmsis_dap_cmd_DAP_SWJ_Pins(0, 0, 0, &d
);
621 if (retval
== ERROR_OK
) {
622 LOG_INFO("SWCLK/TCK = %d SWDIO/TMS = %d TDI = %d TDO = %d nTRST = %d nRESET = %d",
623 (d
& (0x01 << 0)) ? 1 : 0, /* Bit 0: SWCLK/TCK */
624 (d
& (0x01 << 1)) ? 1 : 0, /* Bit 1: SWDIO/TMS */
625 (d
& (0x01 << 2)) ? 1 : 0, /* Bit 2: TDI */
626 (d
& (0x01 << 3)) ? 1 : 0, /* Bit 3: TDO */
627 (d
& (0x01 << 5)) ? 1 : 0, /* Bit 5: nTRST */
628 (d
& (0x01 << 7)) ? 1 : 0); /* Bit 7: nRESET */
634 static int cmsis_dap_reset_link(void)
636 uint8_t *buffer
= cmsis_dap_handle
->packet_buffer
;
638 LOG_DEBUG("CMSIS-DAP: cmsis_dap_reset_link");
639 LOG_INFO("DAP_SWJ Sequence (reset: 50+ '1' followed by 0)");
641 /* reset line with SWDIO high for >50 cycles */
642 buffer
[0] = 0; /* report number */
643 buffer
[1] = CMD_DAP_SWJ_SEQ
;
652 int retval
= cmsis_dap_usb_xfer(cmsis_dap_handle
, 10);
654 if (retval
!= ERROR_OK
|| buffer
[1] != DAP_OK
)
657 /* 16bit JTAG-SWD sequence */
658 buffer
[0] = 0; /* report number */
659 buffer
[1] = CMD_DAP_SWJ_SEQ
;
663 retval
= cmsis_dap_usb_xfer(cmsis_dap_handle
, 5);
665 if (retval
!= ERROR_OK
|| buffer
[1] != DAP_OK
)
668 /* another reset just incase */
669 buffer
[0] = 0; /* report number */
670 buffer
[1] = CMD_DAP_SWJ_SEQ
;
679 retval
= cmsis_dap_usb_xfer(cmsis_dap_handle
, 10);
681 if (retval
!= ERROR_OK
|| buffer
[1] != DAP_OK
)
684 /* 16 cycle idle period */
685 buffer
[0] = 0; /* report number */
686 buffer
[1] = CMD_DAP_SWJ_SEQ
;
690 retval
= cmsis_dap_usb_xfer(cmsis_dap_handle
, 5);
692 if (retval
!= ERROR_OK
|| buffer
[1] != DAP_OK
)
695 DEBUG_IO("DAP Read IDCODE");
697 /* read the id code is always the next sequence */
698 buffer
[0] = 0; /* report number */
699 buffer
[1] = CMD_DAP_TFER
;
703 retval
= cmsis_dap_usb_xfer(cmsis_dap_handle
, 5);
705 if (retval
!= ERROR_OK
)
708 if (buffer
[1] == 0) {
709 LOG_DEBUG("Result 0x%02" PRIx8
" 0x%02" PRIx8
, buffer
[1], buffer
[2]);
711 LOG_DEBUG("DAP Reset Target");
712 buffer
[0] = 0; /* report number */
713 buffer
[1] = CMD_DAP_RESET_TARGET
;
714 retval
= cmsis_dap_usb_xfer(cmsis_dap_handle
, 2);
715 LOG_DEBUG("Result 0x%02" PRIx8
" 0x%02" PRIx8
, buffer
[1], buffer
[2]);
717 LOG_DEBUG("DAP Write Abort");
718 buffer
[0] = 0; /* report number */
719 buffer
[1] = CMD_DAP_WRITE_ABORT
;
721 buffer
[3] = 0x1e/*0x1f*/;
725 retval
= cmsis_dap_usb_xfer(cmsis_dap_handle
, 7);
726 LOG_DEBUG("Result 0x%02" PRIx8
, buffer
[1]);
728 return 0x80 + buffer
[1];
731 LOG_DEBUG("DAP Write Abort");
732 buffer
[0] = 0; /* report number */
733 buffer
[1] = CMD_DAP_WRITE_ABORT
;
739 retval
= cmsis_dap_usb_xfer(cmsis_dap_handle
, 7);
740 LOG_DEBUG("Result 0x%02" PRIx8
, buffer
[1]);
745 static int cmsis_dap_init(void)
750 if (cmsis_dap_handle
== NULL
) {
753 retval
= cmsis_dap_usb_open();
754 if (retval
!= ERROR_OK
)
757 retval
= cmsis_dap_get_caps_info();
758 if (retval
!= ERROR_OK
)
761 /* Connect in JTAG mode */
762 if (!(cmsis_dap_handle
->caps
& INFO_CAPS_JTAG
)) {
763 LOG_ERROR("CMSIS-DAP: JTAG not supported");
764 return ERROR_JTAG_DEVICE_ERROR
;
767 retval
= cmsis_dap_cmd_DAP_Connect(CONNECT_JTAG
);
768 if (retval
!= ERROR_OK
)
771 LOG_INFO("CMSIS-DAP: Interface Initialised (JTAG)");
774 retval
= cmsis_dap_get_version_info();
775 if (retval
!= ERROR_OK
)
778 /* INFO_ID_PKT_SZ - short */
779 retval
= cmsis_dap_cmd_DAP_Info(INFO_ID_PKT_SZ
, &data
);
780 if (retval
!= ERROR_OK
)
783 if (data
[0] == 2) { /* short */
784 uint16_t pkt_sz
= data
[1] + (data
[2] << 8);
786 if (cmsis_dap_handle
->packet_size
!= pkt_sz
+ 1) {
787 /* reallocate buffer */
788 cmsis_dap_handle
->packet_size
= pkt_sz
+ 1;
789 cmsis_dap_handle
->packet_buffer
= realloc(cmsis_dap_handle
->packet_buffer
,
790 cmsis_dap_handle
->packet_size
);
791 if (cmsis_dap_handle
->packet_buffer
== NULL
) {
792 LOG_ERROR("unable to reallocate memory");
797 LOG_DEBUG("CMSIS-DAP: Packet Size = %" PRId16
, pkt_sz
);
800 /* INFO_ID_PKT_CNT - byte */
801 retval
= cmsis_dap_cmd_DAP_Info(INFO_ID_PKT_CNT
, &data
);
802 if (retval
!= ERROR_OK
)
805 if (data
[0] == 1) { /* byte */
806 uint16_t pkt_cnt
= data
[1];
807 cmsis_dap_handle
->packet_count
= pkt_cnt
;
808 LOG_DEBUG("CMSIS-DAP: Packet Count = %" PRId16
, pkt_cnt
);
811 retval
= cmsis_dap_get_status();
812 if (retval
!= ERROR_OK
)
815 /* Now try to connect to the target
816 * TODO: This is all SWD only @ present */
817 retval
= cmsis_dap_cmd_DAP_SWJ_Clock(100); /* 100kHz */
818 if (retval
!= ERROR_OK
)
821 retval
= cmsis_dap_cmd_DAP_TFER_Configure(0, 64, 0);
822 if (retval
!= ERROR_OK
)
824 retval
= cmsis_dap_cmd_DAP_SWD_Configure(0x00);
825 if (retval
!= ERROR_OK
)
828 retval
= cmsis_dap_cmd_DAP_LED(0x03); /* Both LEDs on */
829 if (retval
!= ERROR_OK
)
832 /* support connecting with srst asserted */
833 enum reset_types jtag_reset_config
= jtag_get_reset_config();
835 if (jtag_reset_config
& RESET_CNCT_UNDER_SRST
) {
836 if (jtag_reset_config
& RESET_SRST_NO_GATING
) {
837 retval
= cmsis_dap_cmd_DAP_SWJ_Pins(0, (1 << 7), 0, NULL
);
838 if (retval
!= ERROR_OK
)
840 LOG_INFO("Connecting under reset");
844 retval
= cmsis_dap_reset_link();
845 if (retval
!= ERROR_OK
)
848 cmsis_dap_cmd_DAP_LED(0x00); /* Both LEDs off */
850 LOG_INFO("CMSIS-DAP: Interface ready");
855 static int cmsis_dap_swd_init(uint8_t trn
)
859 DEBUG_IO("CMSIS-DAP: cmsis_dap_swd_init");
861 if (cmsis_dap_handle
== NULL
) {
864 retval
= cmsis_dap_usb_open();
865 if (retval
!= ERROR_OK
)
868 retval
= cmsis_dap_get_caps_info();
869 if (retval
!= ERROR_OK
)
873 if (!(cmsis_dap_handle
->caps
& INFO_CAPS_SWD
)) {
874 LOG_ERROR("CMSIS-DAP: SWD not supported");
875 return ERROR_JTAG_DEVICE_ERROR
;
878 retval
= cmsis_dap_cmd_DAP_Connect(CONNECT_SWD
);
879 if (retval
!= ERROR_OK
)
882 /* Add more setup here.??... */
884 LOG_INFO("CMSIS-DAP: Interface Initialised (SWD)");
888 static int cmsis_dap_quit(void)
890 cmsis_dap_cmd_DAP_Disconnect();
891 cmsis_dap_cmd_DAP_LED(0x00); /* Both LEDs off */
893 cmsis_dap_usb_close(cmsis_dap_handle
);
898 static void cmsis_dap_execute_reset(struct jtag_command
*cmd
)
900 int retval
= cmsis_dap_cmd_DAP_SWJ_Pins(cmd
->cmd
.reset
->srst
? 0 : (1 << 7), \
902 if (retval
!= ERROR_OK
)
903 LOG_ERROR("CMSIS-DAP: Interface reset failed");
906 static void cmsis_dap_execute_sleep(struct jtag_command
*cmd
)
909 int retval
= cmsis_dap_cmd_DAP_Delay(cmd
->cmd
.sleep
->us
);
910 if (retval
!= ERROR_OK
)
912 jtag_sleep(cmd
->cmd
.sleep
->us
);
915 static void cmsis_dap_execute_command(struct jtag_command
*cmd
)
919 cmsis_dap_execute_reset(cmd
);
922 cmsis_dap_execute_sleep(cmd
);
925 LOG_ERROR("BUG: unknown JTAG command type encountered");
930 static int cmsis_dap_execute_queue(void)
932 struct jtag_command
*cmd
= jtag_command_queue
;
934 while (cmd
!= NULL
) {
935 cmsis_dap_execute_command(cmd
);
942 static int cmsis_dap_speed(int speed
)
944 if (speed
> DAP_MAX_CLOCK
) {
945 LOG_INFO("reduce speed request: %dkHz to %dkHz maximum", speed
, DAP_MAX_CLOCK
);
946 speed
= DAP_MAX_CLOCK
;
950 LOG_INFO("RTCK not supported");
951 return ERROR_JTAG_NOT_IMPLEMENTED
;
954 return cmsis_dap_cmd_DAP_SWJ_Clock(speed
);
957 static int cmsis_dap_speed_div(int speed
, int *khz
)
963 static int cmsis_dap_khz(int khz
, int *jtag_speed
)
969 COMMAND_HANDLER(cmsis_dap_handle_info_command
)
971 if (cmsis_dap_get_version_info() == ERROR_OK
)
972 cmsis_dap_get_status();
977 COMMAND_HANDLER(cmsis_dap_handle_vid_pid_command
)
979 if (CMD_ARGC
> MAX_USB_IDS
* 2) {
980 LOG_WARNING("ignoring extra IDs in cmsis_dap_vid_pid "
981 "(maximum is %d pairs)", MAX_USB_IDS
);
982 CMD_ARGC
= MAX_USB_IDS
* 2;
984 if (CMD_ARGC
< 2 || (CMD_ARGC
& 1)) {
985 LOG_WARNING("incomplete cmsis_dap_vid_pid configuration directive");
987 return ERROR_COMMAND_SYNTAX_ERROR
;
988 /* remove the incomplete trailing id */
993 for (i
= 0; i
< CMD_ARGC
; i
+= 2) {
994 COMMAND_PARSE_NUMBER(u16
, CMD_ARGV
[i
], cmsis_dap_vid
[i
>> 1]);
995 COMMAND_PARSE_NUMBER(u16
, CMD_ARGV
[i
+ 1], cmsis_dap_pid
[i
>> 1]);
999 * Explicitly terminate, in case there are multiples instances of
1000 * cmsis_dap_vid_pid.
1002 cmsis_dap_vid
[i
>> 1] = cmsis_dap_pid
[i
>> 1] = 0;
1007 static const struct command_registration cmsis_dap_subcommand_handlers
[] = {
1010 .handler
= &cmsis_dap_handle_info_command
,
1011 .mode
= COMMAND_EXEC
,
1013 .help
= "show cmsis-dap info",
1015 COMMAND_REGISTRATION_DONE
1018 COMMAND_HANDLER(cmsis_dap_reset_command
)
1020 LOG_DEBUG("cmsis_dap_reset_command");
1024 COMMAND_HANDLER(cmsis_dap_jtag_command
)
1026 LOG_DEBUG("cmsis_dap_jtag_command");
1030 static const struct command_registration cmsis_dap_jtag_subcommand_handlers
[] = {
1033 .mode
= COMMAND_ANY
,
1034 .handler
= cmsis_dap_jtag_command
,
1039 .mode
= COMMAND_ANY
,
1040 .handler
= cmsis_dap_jtag_command
,
1044 .name
= "arp_init-reset",
1045 .mode
= COMMAND_ANY
,
1046 .handler
= cmsis_dap_reset_command
,
1050 .name
= "tapisenabled",
1051 .mode
= COMMAND_EXEC
,
1052 .jim_handler
= jim_jtag_tap_enabler
,
1055 .name
= "tapenable",
1056 .mode
= COMMAND_EXEC
,
1057 .jim_handler
= jim_jtag_tap_enabler
,
1060 .name
= "tapdisable",
1061 .mode
= COMMAND_EXEC
,
1062 .handler
= cmsis_dap_jtag_command
,
1066 .name
= "configure",
1067 .mode
= COMMAND_EXEC
,
1068 .handler
= cmsis_dap_jtag_command
,
1073 .mode
= COMMAND_EXEC
,
1074 .jim_handler
= jim_jtag_configure
,
1078 .mode
= COMMAND_ANY
,
1079 .handler
= cmsis_dap_jtag_command
,
1082 COMMAND_REGISTRATION_DONE
1085 static const struct command_registration cmsis_dap_command_handlers
[] = {
1087 .name
= "cmsis-dap",
1088 .mode
= COMMAND_ANY
,
1089 .help
= "perform CMSIS-DAP management",
1091 .chain
= cmsis_dap_subcommand_handlers
,
1094 .name
= "cmsis_dap_vid_pid",
1095 .handler
= &cmsis_dap_handle_vid_pid_command
,
1096 .mode
= COMMAND_CONFIG
,
1097 .help
= "the vendor ID and product ID of the CMSIS-DAP device",
1098 .usage
= "(vid pid)* ",
1101 /* this is currently a nasty hack so we get
1102 * reset working with non jtag interfaces */
1104 .mode
= COMMAND_ANY
,
1106 .chain
= cmsis_dap_jtag_subcommand_handlers
,
1108 COMMAND_REGISTRATION_DONE
1111 static const struct swd_driver cmsis_dap_swd_driver
= {
1112 .init
= cmsis_dap_swd_init
,
1113 .read_reg
= cmsis_dap_swd_read_reg
,
1114 .write_reg
= cmsis_dap_swd_write_reg
,
1115 .read_block
= cmsis_dap_swd_read_block
1118 const char *cmsis_dap_transport
[] = {"cmsis-dap", NULL
};
1120 struct jtag_interface cmsis_dap_interface
= {
1121 .name
= "cmsis-dap",
1122 .commands
= cmsis_dap_command_handlers
,
1123 .swd
= &cmsis_dap_swd_driver
,
1124 .transports
= cmsis_dap_transport
,
1126 .execute_queue
= cmsis_dap_execute_queue
,
1127 .speed
= cmsis_dap_speed
,
1128 .speed_div
= cmsis_dap_speed_div
,
1129 .khz
= cmsis_dap_khz
,
1130 .init
= cmsis_dap_init
,
1131 .quit
= cmsis_dap_quit
,
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