1 /***************************************************************************
2 * Copyright (C) 2007 by Juergen Stuber <juergen@jstuber.net> *
3 * based on Dominic Rath's and Benedikt Sauter's usbprog.c *
5 * Copyright (C) 2008 by Spencer Oliver *
6 * spen@spen-soft.co.uk *
8 * Copyright (C) 2011 by Jean-Christophe PLAGNIOL-VIILARD *
9 * plagnioj@jcrosoft.com *
11 * Copyright (C) 2015 by Marc Schink *
12 * openocd-dev@marcschink.de *
14 * Copyright (C) 2015 by Paul Fertser *
15 * fercerpav@gmail.com *
17 * This program is free software; you can redistribute it and/or modify *
18 * it under the terms of the GNU General Public License as published by *
19 * the Free Software Foundation; either version 2 of the License, or *
20 * (at your option) any later version. *
22 * This program is distributed in the hope that it will be useful, *
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
25 * GNU General Public License for more details. *
27 * You should have received a copy of the GNU General Public License *
28 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
29 ***************************************************************************/
38 #include <jtag/interface.h>
40 #include <jtag/commands.h>
42 #include <libjaylink/libjaylink.h>
44 static struct jaylink_context
*jayctx
;
45 static struct jaylink_device_handle
*devh
;
46 static struct jaylink_connection conn
;
47 static struct jaylink_connection connlist
[JAYLINK_MAX_CONNECTIONS
];
48 static enum jaylink_jtag_version jtag_command_version
;
49 static uint8_t caps
[JAYLINK_DEV_EXT_CAPS_SIZE
];
51 static uint32_t serial_number
;
52 static bool use_serial_number
;
53 static enum jaylink_usb_address usb_address
;
54 static bool use_usb_address
;
55 static enum jaylink_target_interface iface
= JAYLINK_TIF_JTAG
;
56 static bool trace_enabled
;
58 #define JLINK_MAX_SPEED 12000
59 #define JLINK_TAP_BUFFER_SIZE 2048
61 static unsigned int swd_buffer_size
= JLINK_TAP_BUFFER_SIZE
;
63 /* 256 byte non-volatile memory */
64 struct device_config
{
66 /* 0ffset 0x01 to 0x03 */
67 uint8_t reserved_1
[3];
68 uint32_t target_power
;
69 /* 0ffset 0x08 to 0x1f */
70 uint8_t reserved_2
[24];
71 /* IP only for J-Link Pro */
72 uint8_t ip_address
[4];
73 uint8_t subnet_mask
[4];
74 /* 0ffset 0x28 to 0x2f */
75 uint8_t reserved_3
[8];
76 uint8_t mac_address
[6];
77 /* 0ffset 0x36 to 0xff */
78 uint8_t reserved_4
[202];
79 } __attribute__ ((packed
));
81 static struct device_config config
;
82 static struct device_config tmp_config
;
84 /* Queue command functions */
85 static void jlink_end_state(tap_state_t state
);
86 static void jlink_state_move(void);
87 static void jlink_path_move(int num_states
, tap_state_t
*path
);
88 static void jlink_stableclocks(int num_cycles
);
89 static void jlink_runtest(int num_cycles
);
90 static void jlink_reset(int trst
, int srst
);
91 static int jlink_swd_run_queue(void);
92 static void jlink_swd_queue_cmd(uint8_t cmd
, uint32_t *dst
, uint32_t data
, uint32_t ap_delay_clk
);
93 static int jlink_swd_switch_seq(enum swd_special_seq seq
);
95 /* J-Link tap buffer functions */
96 static void jlink_tap_init(void);
97 static int jlink_flush(void);
99 * Queue data to go out and in, flushing the queue as many times as
102 * @param out A pointer to TDI data, if NULL, old stale data will be used.
103 * @param out_offset A bit offset for TDI data.
104 * @param tms_out A pointer to TMS data, if NULL, zeroes will be emitted.
105 * @param tms_offset A bit offset for TMS data.
106 * @param in A pointer to store TDO data to, if NULL the data will be discarded.
107 * @param in_offset A bit offset for TDO data.
108 * @param length Amount of bits to transfer out and in.
110 * @retval This function doesn't return any value.
112 static void jlink_clock_data(const uint8_t *out
, unsigned out_offset
,
113 const uint8_t *tms_out
, unsigned tms_offset
,
114 uint8_t *in
, unsigned in_offset
,
117 static enum tap_state jlink_last_state
= TAP_RESET
;
118 static int queued_retval
;
120 /***************************************************************************/
121 /* External interface implementation */
123 static void jlink_execute_stableclocks(struct jtag_command
*cmd
)
125 DEBUG_JTAG_IO("stableclocks %i cycles", cmd
->cmd
.runtest
->num_cycles
);
126 jlink_stableclocks(cmd
->cmd
.runtest
->num_cycles
);
129 static void jlink_execute_runtest(struct jtag_command
*cmd
)
131 DEBUG_JTAG_IO("runtest %i cycles, end in %i", cmd
->cmd
.runtest
->num_cycles
,
132 cmd
->cmd
.runtest
->end_state
);
134 jlink_end_state(cmd
->cmd
.runtest
->end_state
);
135 jlink_runtest(cmd
->cmd
.runtest
->num_cycles
);
138 static void jlink_execute_statemove(struct jtag_command
*cmd
)
140 DEBUG_JTAG_IO("statemove end in %i", cmd
->cmd
.statemove
->end_state
);
142 jlink_end_state(cmd
->cmd
.statemove
->end_state
);
146 static void jlink_execute_pathmove(struct jtag_command
*cmd
)
148 DEBUG_JTAG_IO("pathmove: %i states, end in %i",
149 cmd
->cmd
.pathmove
->num_states
,
150 cmd
->cmd
.pathmove
->path
[cmd
->cmd
.pathmove
->num_states
- 1]);
152 jlink_path_move(cmd
->cmd
.pathmove
->num_states
, cmd
->cmd
.pathmove
->path
);
155 static void jlink_execute_scan(struct jtag_command
*cmd
)
157 DEBUG_JTAG_IO("%s type:%d", cmd
->cmd
.scan
->ir_scan
? "IRSCAN" : "DRSCAN",
158 jtag_scan_type(cmd
->cmd
.scan
));
160 /* Make sure there are no trailing fields with num_bits == 0, or the logic below will fail. */
161 while (cmd
->cmd
.scan
->num_fields
> 0
162 && cmd
->cmd
.scan
->fields
[cmd
->cmd
.scan
->num_fields
- 1].num_bits
== 0) {
163 cmd
->cmd
.scan
->num_fields
--;
164 LOG_DEBUG("discarding trailing empty field");
167 if (cmd
->cmd
.scan
->num_fields
== 0) {
168 LOG_DEBUG("empty scan, doing nothing");
172 if (cmd
->cmd
.scan
->ir_scan
) {
173 if (tap_get_state() != TAP_IRSHIFT
) {
174 jlink_end_state(TAP_IRSHIFT
);
178 if (tap_get_state() != TAP_DRSHIFT
) {
179 jlink_end_state(TAP_DRSHIFT
);
184 jlink_end_state(cmd
->cmd
.scan
->end_state
);
186 struct scan_field
*field
= cmd
->cmd
.scan
->fields
;
187 unsigned scan_size
= 0;
189 for (int i
= 0; i
< cmd
->cmd
.scan
->num_fields
; i
++, field
++) {
190 scan_size
+= field
->num_bits
;
191 DEBUG_JTAG_IO("%s%s field %d/%d %d bits",
192 field
->in_value
? "in" : "",
193 field
->out_value
? "out" : "",
195 cmd
->cmd
.scan
->num_fields
,
198 if (i
== cmd
->cmd
.scan
->num_fields
- 1 && tap_get_state() != tap_get_end_state()) {
199 /* Last field, and we're leaving IRSHIFT/DRSHIFT. Clock last bit during tap
200 * movement. This last field can't have length zero, it was checked above. */
201 jlink_clock_data(field
->out_value
,
207 field
->num_bits
- 1);
208 uint8_t last_bit
= 0;
209 if (field
->out_value
)
210 bit_copy(&last_bit
, 0, field
->out_value
, field
->num_bits
- 1, 1);
211 uint8_t tms_bits
= 0x01;
212 jlink_clock_data(&last_bit
,
219 tap_set_state(tap_state_transition(tap_get_state(), 1));
220 jlink_clock_data(NULL
,
227 tap_set_state(tap_state_transition(tap_get_state(), 0));
229 jlink_clock_data(field
->out_value
,
238 if (tap_get_state() != tap_get_end_state()) {
239 jlink_end_state(tap_get_end_state());
243 DEBUG_JTAG_IO("%s scan, %i bits, end in %s",
244 (cmd
->cmd
.scan
->ir_scan
) ? "IR" : "DR", scan_size
,
245 tap_state_name(tap_get_end_state()));
248 static void jlink_execute_reset(struct jtag_command
*cmd
)
250 DEBUG_JTAG_IO("reset trst: %i srst %i", cmd
->cmd
.reset
->trst
,
251 cmd
->cmd
.reset
->srst
);
254 jlink_reset(cmd
->cmd
.reset
->trst
, cmd
->cmd
.reset
->srst
);
258 static void jlink_execute_sleep(struct jtag_command
*cmd
)
260 DEBUG_JTAG_IO("sleep %" PRIi32
"", cmd
->cmd
.sleep
->us
);
262 jtag_sleep(cmd
->cmd
.sleep
->us
);
265 static int jlink_execute_command(struct jtag_command
*cmd
)
268 case JTAG_STABLECLOCKS
:
269 jlink_execute_stableclocks(cmd
);
272 jlink_execute_runtest(cmd
);
275 jlink_execute_statemove(cmd
);
278 jlink_execute_pathmove(cmd
);
281 jlink_execute_scan(cmd
);
284 jlink_execute_reset(cmd
);
287 jlink_execute_sleep(cmd
);
290 LOG_ERROR("BUG: Unknown JTAG command type encountered.");
291 return ERROR_JTAG_QUEUE_FAILED
;
297 static int jlink_execute_queue(void)
300 struct jtag_command
*cmd
= jtag_command_queue
;
302 while (cmd
!= NULL
) {
303 ret
= jlink_execute_command(cmd
);
311 return jlink_flush();
314 static int jlink_speed(int speed
)
321 if (jaylink_has_cap(caps
, JAYLINK_DEV_CAP_GET_SPEEDS
)) {
322 ret
= jaylink_get_speeds(devh
, &freq
, ÷r
);
324 if (ret
!= JAYLINK_OK
) {
325 LOG_ERROR("jaylink_get_speeds() failed: %s.",
326 jaylink_strerror_name(ret
));
327 return ERROR_JTAG_DEVICE_ERROR
;
331 max_speed
= freq
/ divider
;
333 max_speed
= JLINK_MAX_SPEED
;
337 if (!jaylink_has_cap(caps
, JAYLINK_DEV_CAP_ADAPTIVE_CLOCKING
)) {
338 LOG_ERROR("Adaptive clocking is not supported by the device.");
339 return ERROR_JTAG_NOT_IMPLEMENTED
;
342 speed
= JAYLINK_SPEED_ADAPTIVE_CLOCKING
;
343 } else if (speed
> max_speed
) {
344 LOG_INFO("Reduced speed from %d kHz to %d kHz (maximum).", speed
,
349 ret
= jaylink_set_speed(devh
, speed
);
351 if (ret
!= JAYLINK_OK
) {
352 LOG_ERROR("jaylink_set_speed() failed: %s.",
353 jaylink_strerror_name(ret
));
354 return ERROR_JTAG_DEVICE_ERROR
;
360 static int jlink_speed_div(int speed
, int *khz
)
367 static int jlink_khz(int khz
, int *jtag_speed
)
374 static bool read_device_config(struct device_config
*cfg
)
378 ret
= jaylink_read_raw_config(devh
, (uint8_t *)cfg
);
380 if (ret
!= JAYLINK_OK
) {
381 LOG_ERROR("jaylink_read_raw_config() failed: %s.",
382 jaylink_strerror_name(ret
));
386 if (cfg
->usb_address
== 0xff)
387 cfg
->usb_address
= 0x00;
389 if (cfg
->target_power
== 0xffffffff)
390 cfg
->target_power
= 0;
395 static int select_interface(void)
400 if (!jaylink_has_cap(caps
, JAYLINK_DEV_CAP_SELECT_TIF
)) {
401 if (iface
!= JAYLINK_TIF_JTAG
) {
402 LOG_ERROR("Device supports JTAG transport only.");
403 return ERROR_JTAG_INIT_FAILED
;
409 ret
= jaylink_get_available_interfaces(devh
, &interfaces
);
411 if (ret
!= JAYLINK_OK
) {
412 LOG_ERROR("jaylink_get_available_interfaces() failed: %s.",
413 jaylink_strerror_name(ret
));
414 return ERROR_JTAG_INIT_FAILED
;
417 if (!(interfaces
& (1 << iface
))) {
418 LOG_ERROR("Selected transport is not supported by the device.");
419 return ERROR_JTAG_INIT_FAILED
;
422 ret
= jaylink_select_interface(devh
, iface
, NULL
);
425 LOG_ERROR("jaylink_select_interface() failed: %s.",
426 jaylink_strerror_name(ret
));
427 return ERROR_JTAG_INIT_FAILED
;
433 static int jlink_register(void)
439 if (!jaylink_has_cap(caps
, JAYLINK_DEV_CAP_REGISTER
))
442 ret
= jaylink_register(devh
, &conn
, connlist
, NULL
, NULL
);
445 LOG_ERROR("jaylink_register() failed: %s.",
446 jaylink_strerror_name(ret
));
450 handle_found
= false;
452 for (i
= 0; i
< ret
; i
++) {
453 if (connlist
[i
].handle
== conn
.handle
) {
460 LOG_ERROR("Registration failed: maximum number of connections on the "
469 * Adjust the SWD transaction buffer size depending on the free device internal
470 * memory. This ensures that the SWD transactions sent to the device do not
471 * exceed the internal memory of the device.
473 static bool adjust_swd_buffer_size(void)
478 if (!jaylink_has_cap(caps
, JAYLINK_DEV_CAP_GET_FREE_MEMORY
))
481 ret
= jaylink_get_free_memory(devh
, &tmp
);
483 if (ret
!= JAYLINK_OK
) {
484 LOG_ERROR("jaylink_get_free_memory() failed: %s.",
485 jaylink_strerror_name(ret
));
490 LOG_ERROR("Not enough free device internal memory: %u bytes.", tmp
);
494 tmp
= MIN(JLINK_TAP_BUFFER_SIZE
, (tmp
- 16) / 2);
496 if (tmp
!= swd_buffer_size
) {
497 swd_buffer_size
= tmp
;
498 LOG_DEBUG("Adjusted SWD transaction buffer size to %u bytes.",
505 static int jaylink_log_handler(const struct jaylink_context
*ctx
, int level
,
506 const char *format
, va_list args
, void *user_data
)
511 case JAYLINK_LOG_LEVEL_ERROR
:
514 case JAYLINK_LOG_LEVEL_WARNING
:
515 tmp
= LOG_LVL_WARNING
;
518 * Forward info messages to the debug output because they are more verbose
519 * than info messages of OpenOCD.
521 case JAYLINK_LOG_LEVEL_INFO
:
522 case JAYLINK_LOG_LEVEL_DEBUG
:
526 tmp
= LOG_LVL_WARNING
;
529 log_vprintf_lf(tmp
, __FILE__
, __LINE__
, __func__
, format
, args
);
534 static int jlink_init(void)
537 struct jaylink_device
**devs
;
541 char *firmware_version
;
542 struct jaylink_hardware_version hwver
;
543 struct jaylink_hardware_status hwstatus
;
544 enum jaylink_usb_address address
;
547 ret
= jaylink_init(&jayctx
);
549 if (ret
!= JAYLINK_OK
) {
550 LOG_ERROR("jaylink_init() failed: %s.",
551 jaylink_strerror_name(ret
));
552 return ERROR_JTAG_INIT_FAILED
;
555 ret
= jaylink_log_set_callback(jayctx
, &jaylink_log_handler
, NULL
);
557 if (ret
!= JAYLINK_OK
) {
558 LOG_ERROR("jaylink_log_set_callback() failed: %s.",
559 jaylink_strerror_name(ret
));
560 jaylink_exit(jayctx
);
561 return ERROR_JTAG_INIT_FAILED
;
564 ret
= jaylink_get_device_list(jayctx
, &devs
);
567 LOG_ERROR("jaylink_get_device_list() failed: %s.",
568 jaylink_strerror_name(ret
));
569 jaylink_exit(jayctx
);
570 return ERROR_JTAG_INIT_FAILED
;
573 found_device
= false;
575 if (!use_serial_number
&& !use_usb_address
)
576 LOG_INFO("No device selected, using first device.");
578 for (i
= 0; devs
[i
]; i
++) {
579 if (use_serial_number
) {
580 ret
= jaylink_device_get_serial_number(devs
[i
], &tmp
);
582 if (ret
== JAYLINK_ERR_NOT_AVAILABLE
) {
584 } else if (ret
!= JAYLINK_OK
) {
585 LOG_WARNING("jaylink_device_get_serial_number() failed: %s.",
586 jaylink_strerror_name(ret
));
590 if (serial_number
!= tmp
)
594 if (use_usb_address
) {
595 ret
= jaylink_device_get_usb_address(devs
[i
], &address
);
597 if (ret
!= JAYLINK_OK
) {
598 LOG_WARNING("jaylink_device_get_usb_address() failed: %s.",
599 jaylink_strerror_name(ret
));
603 if (usb_address
!= address
)
607 ret
= jaylink_open(devs
[i
], &devh
);
609 if (ret
== JAYLINK_OK
) {
614 LOG_ERROR("Failed to open device: %s.", jaylink_strerror_name(ret
));
617 jaylink_free_device_list(devs
, 1);
620 LOG_ERROR("No J-Link device found.");
621 jaylink_exit(jayctx
);
622 return ERROR_JTAG_INIT_FAILED
;
626 * Be careful with changing the following initialization sequence because
627 * some devices are known to be sensitive regarding the order.
630 ret
= jaylink_get_firmware_version(devh
, &firmware_version
, &length
);
632 if (ret
!= JAYLINK_OK
) {
633 LOG_ERROR("jaylink_get_firmware_version() failed: %s.",
634 jaylink_strerror_name(ret
));
636 jaylink_exit(jayctx
);
637 return ERROR_JTAG_INIT_FAILED
;
638 } else if (length
> 0) {
639 LOG_INFO("%s", firmware_version
);
640 free(firmware_version
);
642 LOG_WARNING("Device responds empty firmware version string.");
645 memset(caps
, 0, JAYLINK_DEV_EXT_CAPS_SIZE
);
646 ret
= jaylink_get_caps(devh
, caps
);
648 if (ret
!= JAYLINK_OK
) {
649 LOG_ERROR("jaylink_get_caps() failed: %s.", jaylink_strerror_name(ret
));
651 jaylink_exit(jayctx
);
652 return ERROR_JTAG_INIT_FAILED
;
655 if (jaylink_has_cap(caps
, JAYLINK_DEV_CAP_GET_EXT_CAPS
)) {
656 ret
= jaylink_get_extended_caps(devh
, caps
);
658 if (ret
!= JAYLINK_OK
) {
659 LOG_ERROR("jaylink_get_extended_caps() failed: %s.",
660 jaylink_strerror_name(ret
));
662 jaylink_exit(jayctx
);
663 return ERROR_JTAG_INIT_FAILED
;
667 jtag_command_version
= JAYLINK_JTAG_V2
;
669 if (jaylink_has_cap(caps
, JAYLINK_DEV_CAP_GET_HW_VERSION
)) {
670 ret
= jaylink_get_hardware_version(devh
, &hwver
);
672 if (ret
!= JAYLINK_OK
) {
673 LOG_ERROR("Failed to retrieve hardware version: %s.",
674 jaylink_strerror_name(ret
));
676 jaylink_exit(jayctx
);
677 return ERROR_JTAG_INIT_FAILED
;
680 LOG_INFO("Hardware version: %u.%02u", hwver
.major
, hwver
.minor
);
682 if (hwver
.major
>= 5)
683 jtag_command_version
= JAYLINK_JTAG_V3
;
686 if (iface
== JAYLINK_TIF_SWD
) {
688 * Adjust the SWD transaction buffer size in case there is already
689 * allocated memory on the device. This happens for example if the
690 * memory for SWO capturing is still allocated because the software
691 * which used the device before has not been shut down properly.
693 if (!adjust_swd_buffer_size()) {
695 jaylink_exit(jayctx
);
696 return ERROR_JTAG_INIT_FAILED
;
700 if (jaylink_has_cap(caps
, JAYLINK_DEV_CAP_READ_CONFIG
)) {
701 if (!read_device_config(&config
)) {
702 LOG_ERROR("Failed to read device configuration data.");
704 jaylink_exit(jayctx
);
705 return ERROR_JTAG_INIT_FAILED
;
708 memcpy(&tmp_config
, &config
, sizeof(struct device_config
));
711 ret
= jaylink_get_hardware_status(devh
, &hwstatus
);
713 if (ret
!= JAYLINK_OK
) {
714 LOG_ERROR("jaylink_get_hardware_status() failed: %s.",
715 jaylink_strerror_name(ret
));
717 jaylink_exit(jayctx
);
718 return ERROR_JTAG_INIT_FAILED
;
721 LOG_INFO("VTarget = %u.%03u V", hwstatus
.target_voltage
/ 1000,
722 hwstatus
.target_voltage
% 1000);
730 ret
= jlink_register();
732 if (ret
!= ERROR_OK
) {
734 jaylink_exit(jayctx
);
735 return ERROR_JTAG_INIT_FAILED
;
738 ret
= select_interface();
740 if (ret
!= ERROR_OK
) {
742 jaylink_exit(jayctx
);
750 jlink_speed(jtag_get_speed_khz());
752 if (iface
== JAYLINK_TIF_JTAG
) {
754 * J-Link devices with firmware version v5 and v6 seems to have an issue
755 * if the first tap move is not divisible by 8, so we send a TLR on
759 jlink_clock_data(NULL
, 0, &tms
, 0, NULL
, 0, 8);
767 static int jlink_quit(void)
772 ret
= jaylink_swo_stop(devh
);
774 if (ret
!= JAYLINK_OK
)
775 LOG_ERROR("jaylink_swo_stop() failed: %s.",
776 jaylink_strerror_name(ret
));
779 if (jaylink_has_cap(caps
, JAYLINK_DEV_CAP_REGISTER
)) {
780 ret
= jaylink_unregister(devh
, &conn
, connlist
, NULL
, NULL
);
783 LOG_ERROR("jaylink_unregister() failed: %s.",
784 jaylink_strerror_name(ret
));
788 jaylink_exit(jayctx
);
793 /***************************************************************************/
794 /* Queue command implementations */
796 static void jlink_end_state(tap_state_t state
)
798 if (tap_is_state_stable(state
))
799 tap_set_end_state(state
);
801 LOG_ERROR("BUG: %i is not a valid end state", state
);
806 /* Goes to the end state. */
807 static void jlink_state_move(void)
810 uint8_t tms_scan_bits
;
812 tms_scan
= tap_get_tms_path(tap_get_state(), tap_get_end_state());
813 tms_scan_bits
= tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
815 jlink_clock_data(NULL
, 0, &tms_scan
, 0, NULL
, 0, tms_scan_bits
);
817 tap_set_state(tap_get_end_state());
820 static void jlink_path_move(int num_states
, tap_state_t
*path
)
825 for (i
= 0; i
< num_states
; i
++) {
826 if (path
[i
] == tap_state_transition(tap_get_state(), false))
827 jlink_clock_data(NULL
, 0, NULL
, 0, NULL
, 0, 1);
828 else if (path
[i
] == tap_state_transition(tap_get_state(), true))
829 jlink_clock_data(NULL
, 0, &tms
, 0, NULL
, 0, 1);
831 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition.",
832 tap_state_name(tap_get_state()), tap_state_name(path
[i
]));
836 tap_set_state(path
[i
]);
839 tap_set_end_state(tap_get_state());
842 static void jlink_stableclocks(int num_cycles
)
846 uint8_t tms
= tap_get_state() == TAP_RESET
;
847 /* Execute num_cycles. */
848 for (i
= 0; i
< num_cycles
; i
++)
849 jlink_clock_data(NULL
, 0, &tms
, 0, NULL
, 0, 1);
852 static void jlink_runtest(int num_cycles
)
854 tap_state_t saved_end_state
= tap_get_end_state();
856 /* Only do a state_move when we're not already in IDLE. */
857 if (tap_get_state() != TAP_IDLE
) {
858 jlink_end_state(TAP_IDLE
);
863 jlink_stableclocks(num_cycles
);
865 /* Finish in end_state. */
866 jlink_end_state(saved_end_state
);
868 if (tap_get_state() != tap_get_end_state())
872 static void jlink_reset(int trst
, int srst
)
874 LOG_DEBUG("TRST: %i, SRST: %i.", trst
, srst
);
876 /* Signals are active low. */
878 jaylink_set_reset(devh
);
881 jaylink_clear_reset(devh
);
884 jaylink_jtag_clear_trst(devh
);
887 jaylink_jtag_set_trst(devh
);
890 COMMAND_HANDLER(jlink_usb_command
)
895 command_print(CMD_CTX
, "Need exactly one argument for jlink usb.");
896 return ERROR_COMMAND_SYNTAX_ERROR
;
899 if (sscanf(CMD_ARGV
[0], "%i", &tmp
) != 1) {
900 command_print(CMD_CTX
, "Invalid USB address: %s.", CMD_ARGV
[0]);
904 if (tmp
< JAYLINK_USB_ADDRESS_0
|| tmp
> JAYLINK_USB_ADDRESS_3
) {
905 command_print(CMD_CTX
, "Invalid USB address: %s.", CMD_ARGV
[0]);
911 use_serial_number
= false;
912 use_usb_address
= true;
917 COMMAND_HANDLER(jlink_serial_command
)
920 command_print(CMD_CTX
, "Need exactly one argument for jlink serial.");
921 return ERROR_COMMAND_SYNTAX_ERROR
;
924 if (sscanf(CMD_ARGV
[0], "%" SCNd32
, &serial_number
) != 1) {
925 command_print(CMD_CTX
, "Invalid serial number: %s.", CMD_ARGV
[0]);
929 use_serial_number
= true;
930 use_usb_address
= false;
935 COMMAND_HANDLER(jlink_handle_hwstatus_command
)
938 struct jaylink_hardware_status status
;
940 ret
= jaylink_get_hardware_status(devh
, &status
);
942 if (ret
!= JAYLINK_OK
) {
943 command_print(CMD_CTX
, "jaylink_get_hardware_status() failed: %s.",
944 jaylink_strerror_name(ret
));
948 command_print(CMD_CTX
, "VTarget = %u.%03u V",
949 status
.target_voltage
/ 1000, status
.target_voltage
% 1000);
951 command_print(CMD_CTX
, "TCK = %u TDI = %u TDO = %u TMS = %u SRST = %u "
952 "TRST = %u", status
.tck
, status
.tdi
, status
.tdo
, status
.tms
,
953 status
.tres
, status
.trst
);
955 if (status
.target_voltage
< 1500)
956 command_print(CMD_CTX
, "Target voltage too low. Check target power.");
961 COMMAND_HANDLER(jlink_handle_free_memory_command
)
966 if (!jaylink_has_cap(caps
, JAYLINK_DEV_CAP_GET_FREE_MEMORY
)) {
967 command_print(CMD_CTX
, "Retrieval of free memory is not supported by "
972 ret
= jaylink_get_free_memory(devh
, &tmp
);
974 if (ret
!= JAYLINK_OK
) {
975 command_print(CMD_CTX
, "jaylink_get_free_memory() failed: %s.",
976 jaylink_strerror_name(ret
));
980 command_print(CMD_CTX
, "Device has %u bytes of free memory.", tmp
);
985 COMMAND_HANDLER(jlink_handle_jlink_jtag_command
)
991 switch (jtag_command_version
) {
992 case JAYLINK_JTAG_V2
:
995 case JAYLINK_JTAG_V3
:
1002 command_print(CMD_CTX
, "JTAG command version: %i", version
);
1003 } else if (CMD_ARGC
== 1) {
1004 if (sscanf(CMD_ARGV
[0], "%i", &tmp
) != 1) {
1005 command_print(CMD_CTX
, "Invalid argument: %s.", CMD_ARGV
[0]);
1006 return ERROR_COMMAND_SYNTAX_ERROR
;
1011 jtag_command_version
= JAYLINK_JTAG_V2
;
1014 jtag_command_version
= JAYLINK_JTAG_V3
;
1017 command_print(CMD_CTX
, "Invalid argument: %s.", CMD_ARGV
[0]);
1018 return ERROR_COMMAND_SYNTAX_ERROR
;
1021 command_print(CMD_CTX
, "Need exactly one argument for jlink jtag.");
1022 return ERROR_COMMAND_SYNTAX_ERROR
;
1028 COMMAND_HANDLER(jlink_handle_target_power_command
)
1033 if (CMD_ARGC
!= 1) {
1034 command_print(CMD_CTX
, "Need exactly one argument for jlink "
1036 return ERROR_COMMAND_SYNTAX_ERROR
;
1039 if (!jaylink_has_cap(caps
, JAYLINK_DEV_CAP_SET_TARGET_POWER
)) {
1040 command_print(CMD_CTX
, "Target power supply is not supported by the "
1045 if (!strcmp(CMD_ARGV
[0], "on")) {
1047 } else if (!strcmp(CMD_ARGV
[0], "off")) {
1050 command_print(CMD_CTX
, "Invalid argument: %s.", CMD_ARGV
[0]);
1054 ret
= jaylink_set_target_power(devh
, enable
);
1056 if (ret
!= JAYLINK_OK
) {
1057 command_print(CMD_CTX
, "jaylink_set_target_power() failed: %s.",
1058 jaylink_strerror_name(ret
));
1065 static void show_config_usb_address(struct command_context
*ctx
)
1067 if (config
.usb_address
!= tmp_config
.usb_address
)
1068 command_print(ctx
, "USB address: %u [%u]", config
.usb_address
,
1069 tmp_config
.usb_address
);
1071 command_print(ctx
, "USB address: %u", config
.usb_address
);
1074 static void show_config_ip_address(struct command_context
*ctx
)
1076 if (!memcmp(config
.ip_address
, tmp_config
.ip_address
, 4))
1077 command_print(ctx
, "IP address: %d.%d.%d.%d",
1078 config
.ip_address
[3], config
.ip_address
[2],
1079 config
.ip_address
[1], config
.ip_address
[0]);
1081 command_print(ctx
, "IP address: %d.%d.%d.%d [%d.%d.%d.%d]",
1082 config
.ip_address
[3], config
.ip_address
[2],
1083 config
.ip_address
[1], config
.ip_address
[0],
1084 tmp_config
.ip_address
[3], tmp_config
.ip_address
[2],
1085 tmp_config
.ip_address
[1], tmp_config
.ip_address
[0]);
1087 if (!memcmp(config
.subnet_mask
, tmp_config
.subnet_mask
, 4))
1088 command_print(ctx
, "Subnet mask: %d.%d.%d.%d",
1089 config
.subnet_mask
[3], config
.subnet_mask
[2],
1090 config
.subnet_mask
[1], config
.subnet_mask
[0]);
1092 command_print(ctx
, "Subnet mask: %d.%d.%d.%d [%d.%d.%d.%d]",
1093 config
.subnet_mask
[3], config
.subnet_mask
[2],
1094 config
.subnet_mask
[1], config
.subnet_mask
[0],
1095 tmp_config
.subnet_mask
[3], tmp_config
.subnet_mask
[2],
1096 tmp_config
.subnet_mask
[1], tmp_config
.subnet_mask
[0]);
1099 static void show_config_mac_address(struct command_context
*ctx
)
1101 if (!memcmp(config
.mac_address
, tmp_config
.mac_address
, 6))
1102 command_print(ctx
, "MAC address: %.02x:%.02x:%.02x:%.02x:%.02x:%.02x",
1103 config
.mac_address
[5], config
.mac_address
[4],
1104 config
.mac_address
[3], config
.mac_address
[2],
1105 config
.mac_address
[1], config
.mac_address
[0]);
1107 command_print(ctx
, "MAC address: %.02x:%.02x:%.02x:%.02x:%.02x:%.02x "
1108 "[%.02x:%.02x:%.02x:%.02x:%.02x:%.02x]",
1109 config
.mac_address
[5], config
.mac_address
[4],
1110 config
.mac_address
[3], config
.mac_address
[2],
1111 config
.mac_address
[1], config
.mac_address
[0],
1112 tmp_config
.mac_address
[5], tmp_config
.mac_address
[4],
1113 tmp_config
.mac_address
[3], tmp_config
.mac_address
[2],
1114 tmp_config
.mac_address
[1], tmp_config
.mac_address
[0]);
1117 static void show_config_target_power(struct command_context
*ctx
)
1119 const char *target_power
;
1120 const char *current_target_power
;
1122 if (!config
.target_power
)
1123 target_power
= "off";
1125 target_power
= "on";
1127 if (!tmp_config
.target_power
)
1128 current_target_power
= "off";
1130 current_target_power
= "on";
1132 if (config
.target_power
!= tmp_config
.target_power
)
1133 command_print(ctx
, "Target power supply: %s [%s]", target_power
,
1134 current_target_power
);
1136 command_print(ctx
, "Target power supply: %s", target_power
);
1139 static void show_config(struct command_context
*ctx
)
1141 command_print(ctx
, "J-Link device configuration:");
1143 show_config_usb_address(ctx
);
1145 if (jaylink_has_cap(caps
, JAYLINK_DEV_CAP_SET_TARGET_POWER
))
1146 show_config_target_power(ctx
);
1148 if (jaylink_has_cap(caps
, JAYLINK_DEV_CAP_ETHERNET
)) {
1149 show_config_ip_address(ctx
);
1150 show_config_mac_address(ctx
);
1154 static int poll_trace(uint8_t *buf
, size_t *size
)
1161 ret
= jaylink_swo_read(devh
, buf
, &length
);
1163 if (ret
!= JAYLINK_OK
) {
1164 LOG_ERROR("jaylink_swo_read() failed: %s.", jaylink_strerror_name(ret
));
1173 static uint32_t calculate_trace_buffer_size(void)
1178 if (!jaylink_has_cap(caps
, JAYLINK_DEV_CAP_GET_FREE_MEMORY
))
1181 ret
= jaylink_get_free_memory(devh
, &tmp
);
1183 if (ret
!= JAYLINK_OK
) {
1184 LOG_ERROR("jaylink_get_free_memory() failed: %s.",
1185 jaylink_strerror_name(ret
));
1189 if (tmp
> 0x3fff || tmp
<= 0x600)
1194 return tmp
& 0xffffff00;
1197 static bool check_trace_freq(struct jaylink_swo_speed speed
,
1198 uint32_t trace_freq
)
1204 min
= fabs(1.0 - (speed
.freq
/ ((double)trace_freq
* speed
.min_div
)));
1206 for (divider
= speed
.min_div
; divider
< speed
.max_div
; divider
++) {
1207 deviation
= fabs(1.0 - (speed
.freq
/ ((double)trace_freq
* divider
)));
1209 if (deviation
< 0.03) {
1210 LOG_DEBUG("Found suitable frequency divider %u with deviation of "
1211 "%.02f %%.", divider
, deviation
);
1215 if (deviation
< min
)
1219 LOG_ERROR("Selected trace frequency is not supported by the device. "
1220 "Please choose a different trace frequency.");
1221 LOG_ERROR("Maximum permitted deviation is 3.00 %%, but only %.02f %% "
1222 "could be achieved.", min
* 100);
1227 static int config_trace(bool enabled
, enum tpio_pin_protocol pin_protocol
,
1228 uint32_t port_size
, unsigned int *trace_freq
)
1231 uint32_t buffer_size
;
1232 struct jaylink_swo_speed speed
;
1234 if (!jaylink_has_cap(caps
, JAYLINK_DEV_CAP_SWO
)) {
1235 LOG_ERROR("Trace capturing is not supported by the device.");
1239 if (pin_protocol
!= ASYNC_UART
) {
1240 LOG_ERROR("Selected pin protocol is not supported.");
1244 trace_enabled
= enabled
;
1246 ret
= jaylink_swo_stop(devh
);
1248 if (ret
!= JAYLINK_OK
) {
1249 LOG_ERROR("jaylink_swo_stop() failed: %s.", jaylink_strerror_name(ret
));
1255 * Adjust the SWD transaction buffer size as stopping SWO capturing
1256 * deallocates device internal memory.
1258 if (!adjust_swd_buffer_size())
1264 buffer_size
= calculate_trace_buffer_size();
1267 LOG_ERROR("Not enough free device memory to start trace capturing.");
1271 ret
= jaylink_swo_get_speeds(devh
, JAYLINK_SWO_MODE_UART
, &speed
);
1273 if (ret
!= JAYLINK_OK
) {
1274 LOG_ERROR("jaylink_swo_get_speeds() failed: %s.",
1275 jaylink_strerror_name(ret
));
1280 *trace_freq
= speed
.freq
/ speed
.min_div
;
1282 if (!check_trace_freq(speed
, *trace_freq
))
1285 LOG_DEBUG("Using %u bytes device memory for trace capturing.", buffer_size
);
1287 ret
= jaylink_swo_start(devh
, JAYLINK_SWO_MODE_UART
, *trace_freq
,
1290 if (ret
!= JAYLINK_OK
) {
1291 LOG_ERROR("jaylink_start_swo() failed: %s.",
1292 jaylink_strerror_name(ret
));
1297 * Adjust the SWD transaction buffer size as starting SWO capturing
1298 * allocates device internal memory.
1300 if (!adjust_swd_buffer_size())
1306 COMMAND_HANDLER(jlink_handle_config_usb_address_command
)
1310 if (!jaylink_has_cap(caps
, JAYLINK_DEV_CAP_READ_CONFIG
)) {
1311 command_print(CMD_CTX
, "Reading configuration is not supported by the "
1317 show_config_usb_address(CMD_CTX
);
1318 } else if (CMD_ARGC
== 1) {
1319 if (sscanf(CMD_ARGV
[0], "%" SCNd8
, &tmp
) != 1) {
1320 command_print(CMD_CTX
, "Invalid USB address: %s.", CMD_ARGV
[0]);
1324 if (tmp
> JAYLINK_USB_ADDRESS_3
) {
1325 command_print(CMD_CTX
, "Invalid USB address: %u.", tmp
);
1329 tmp_config
.usb_address
= tmp
;
1331 command_print(CMD_CTX
, "Need exactly one argument for jlink config "
1333 return ERROR_COMMAND_SYNTAX_ERROR
;
1339 COMMAND_HANDLER(jlink_handle_config_target_power_command
)
1343 if (!jaylink_has_cap(caps
, JAYLINK_DEV_CAP_READ_CONFIG
)) {
1344 command_print(CMD_CTX
, "Reading configuration is not supported by the "
1349 if (!jaylink_has_cap(caps
, JAYLINK_DEV_CAP_SET_TARGET_POWER
)) {
1350 command_print(CMD_CTX
, "Target power supply is not supported by the "
1356 show_config_target_power(CMD_CTX
);
1357 } else if (CMD_ARGC
== 1) {
1358 if (!strcmp(CMD_ARGV
[0], "on")) {
1360 } else if (!strcmp(CMD_ARGV
[0], "off")) {
1363 command_print(CMD_CTX
, "Invalid argument: %s.", CMD_ARGV
[0]);
1367 tmp_config
.target_power
= enable
;
1369 command_print(CMD_CTX
, "Need exactly one argument for jlink config "
1371 return ERROR_COMMAND_SYNTAX_ERROR
;
1377 COMMAND_HANDLER(jlink_handle_config_mac_address_command
)
1384 if (!jaylink_has_cap(caps
, JAYLINK_DEV_CAP_READ_CONFIG
)) {
1385 command_print(CMD_CTX
, "Reading configuration is not supported by the "
1390 if (!jaylink_has_cap(caps
, JAYLINK_DEV_CAP_ETHERNET
)) {
1391 command_print(CMD_CTX
, "Ethernet connectivity is not supported by the "
1397 show_config_mac_address(CMD_CTX
);
1398 } else if (CMD_ARGC
== 1) {
1401 if ((strlen(str
) != 17) || (str
[2] != ':' || str
[5] != ':' || \
1402 str
[8] != ':' || str
[11] != ':' || str
[14] != ':')) {
1403 command_print(CMD_CTX
, "Invalid MAC address format.");
1404 return ERROR_COMMAND_SYNTAX_ERROR
;
1407 for (i
= 5; i
>= 0; i
--) {
1408 addr
[i
] = strtoul(str
, &e
, 16);
1412 if (!(addr
[0] | addr
[1] | addr
[2] | addr
[3] | addr
[4] | addr
[5])) {
1413 command_print(CMD_CTX
, "Invalid MAC address: zero address.");
1414 return ERROR_COMMAND_SYNTAX_ERROR
;
1417 if (!(0x01 & addr
[0])) {
1418 command_print(CMD_CTX
, "Invalid MAC address: multicast address.");
1419 return ERROR_COMMAND_SYNTAX_ERROR
;
1422 memcpy(tmp_config
.mac_address
, addr
, sizeof(addr
));
1424 command_print(CMD_CTX
, "Need exactly one argument for jlink config "
1426 return ERROR_COMMAND_SYNTAX_ERROR
;
1432 static bool string_to_ip(const char *s
, uint8_t *ip
, int *pos
)
1436 const char *s_save
= s
;
1442 for (i
= 0; i
< 4; i
++) {
1443 lip
[i
] = strtoul(s
, &e
, 10);
1445 if (*e
!= '.' && i
!= 3)
1452 memcpy(ip
, lip
, sizeof(lip
));
1457 static void cpy_ip(uint8_t *dst
, uint8_t *src
)
1461 for (i
= 0, j
= 3; i
< 4; i
++, j
--)
1465 COMMAND_HANDLER(jlink_handle_config_ip_address_command
)
1467 uint8_t ip_address
[4];
1468 uint32_t subnet_mask
= 0;
1470 uint8_t subnet_bits
= 24;
1472 if (!jaylink_has_cap(caps
, JAYLINK_DEV_CAP_READ_CONFIG
)) {
1473 command_print(CMD_CTX
, "Reading configuration is not supported by the "
1478 if (!jaylink_has_cap(caps
, JAYLINK_DEV_CAP_ETHERNET
)) {
1479 command_print(CMD_CTX
, "Ethernet connectivity is not supported by the "
1485 show_config_ip_address(CMD_CTX
);
1487 if (!string_to_ip(CMD_ARGV
[0], ip_address
, &i
))
1488 return ERROR_COMMAND_SYNTAX_ERROR
;
1490 len
= strlen(CMD_ARGV
[0]);
1492 /* Check for format A.B.C.D/E. */
1494 if (CMD_ARGV
[0][i
] != '/')
1495 return ERROR_COMMAND_SYNTAX_ERROR
;
1497 COMMAND_PARSE_NUMBER(u8
, CMD_ARGV
[0] + i
+ 1, subnet_bits
);
1498 } else if (CMD_ARGC
> 1) {
1499 if (!string_to_ip(CMD_ARGV
[1], (uint8_t *)&subnet_mask
, &i
))
1500 return ERROR_COMMAND_SYNTAX_ERROR
;
1504 subnet_mask
= (uint32_t)(subnet_bits
< 32 ?
1505 ((1ULL << subnet_bits
) - 1) : 0xffffffff);
1507 cpy_ip(tmp_config
.ip_address
, ip_address
);
1508 cpy_ip(tmp_config
.subnet_mask
, (uint8_t *)&subnet_mask
);
1514 COMMAND_HANDLER(jlink_handle_config_reset_command
)
1516 if (!jaylink_has_cap(caps
, JAYLINK_DEV_CAP_READ_CONFIG
))
1519 memcpy(&tmp_config
, &config
, sizeof(struct device_config
));
1525 COMMAND_HANDLER(jlink_handle_config_write_command
)
1529 if (!jaylink_has_cap(caps
, JAYLINK_DEV_CAP_READ_CONFIG
)) {
1530 command_print(CMD_CTX
, "Reading configuration is not supported by the "
1535 if (!jaylink_has_cap(caps
, JAYLINK_DEV_CAP_WRITE_CONFIG
)) {
1536 command_print(CMD_CTX
, "Writing configuration is not supported by the "
1541 if (!memcmp(&config
, &tmp_config
, sizeof(struct device_config
))) {
1542 command_print(CMD_CTX
, "Operation not performed due to no changes in "
1543 "the configuration.");
1547 ret
= jaylink_write_raw_config(devh
, (const uint8_t *)&tmp_config
);
1549 if (ret
!= JAYLINK_OK
) {
1550 LOG_ERROR("jaylink_write_raw_config() failed: %s.",
1551 jaylink_strerror_name(ret
));
1555 if (!read_device_config(&config
)) {
1556 LOG_ERROR("Failed to read device configuration for verification.");
1560 if (memcmp(&config
, &tmp_config
, sizeof(struct device_config
))) {
1561 LOG_ERROR("Verification of device configuration failed. Please check "
1566 memcpy(&tmp_config
, &config
, sizeof(struct device_config
));
1567 command_print(CMD_CTX
, "The new device configuration applies after power "
1568 "cycling the J-Link device.");
1573 COMMAND_HANDLER(jlink_handle_config_command
)
1575 if (!jaylink_has_cap(caps
, JAYLINK_DEV_CAP_READ_CONFIG
)) {
1576 command_print(CMD_CTX
, "Device doesn't support reading configuration.");
1581 show_config(CMD_CTX
);
1586 static const struct command_registration jlink_config_subcommand_handlers
[] = {
1589 .handler
= &jlink_handle_config_usb_address_command
,
1590 .mode
= COMMAND_EXEC
,
1591 .help
= "set the USB address",
1595 .name
= "targetpower",
1596 .handler
= &jlink_handle_config_target_power_command
,
1597 .mode
= COMMAND_EXEC
,
1598 .help
= "set the target power supply",
1603 .handler
= &jlink_handle_config_mac_address_command
,
1604 .mode
= COMMAND_EXEC
,
1605 .help
= "set the MAC Address",
1606 .usage
= "[ff:ff:ff:ff:ff:ff]",
1610 .handler
= &jlink_handle_config_ip_address_command
,
1611 .mode
= COMMAND_EXEC
,
1612 .help
= "set the IP address, where A.B.C.D is the IP address, "
1613 "E the bit of the subnet mask, F.G.H.I the subnet mask",
1614 .usage
= "[A.B.C.D[/E] [F.G.H.I]]",
1618 .handler
= &jlink_handle_config_reset_command
,
1619 .mode
= COMMAND_EXEC
,
1620 .help
= "undo configuration changes"
1624 .handler
= &jlink_handle_config_write_command
,
1625 .mode
= COMMAND_EXEC
,
1626 .help
= "write configuration to the device"
1628 COMMAND_REGISTRATION_DONE
1631 static const struct command_registration jlink_subcommand_handlers
[] = {
1634 .handler
= &jlink_handle_jlink_jtag_command
,
1635 .mode
= COMMAND_EXEC
,
1636 .help
= "select the JTAG command version",
1640 .name
= "targetpower",
1641 .handler
= &jlink_handle_target_power_command
,
1642 .mode
= COMMAND_EXEC
,
1643 .help
= "set the target power supply",
1648 .handler
= &jlink_handle_free_memory_command
,
1649 .mode
= COMMAND_EXEC
,
1650 .help
= "show free device memory"
1654 .handler
= &jlink_handle_hwstatus_command
,
1655 .mode
= COMMAND_EXEC
,
1656 .help
= "show the hardware status"
1660 .handler
= &jlink_usb_command
,
1661 .mode
= COMMAND_CONFIG
,
1662 .help
= "set the USB address of the device that should be used",
1667 .handler
= &jlink_serial_command
,
1668 .mode
= COMMAND_CONFIG
,
1669 .help
= "set the serial number of the device that should be used",
1670 .usage
= "<serial number>"
1674 .handler
= &jlink_handle_config_command
,
1675 .mode
= COMMAND_EXEC
,
1676 .help
= "access the device configuration. If no argument is given "
1677 "this will show the device configuration",
1678 .chain
= jlink_config_subcommand_handlers
,
1680 COMMAND_REGISTRATION_DONE
1683 static const struct command_registration jlink_command_handlers
[] = {
1686 .mode
= COMMAND_ANY
,
1687 .help
= "perform jlink management",
1688 .chain
= jlink_subcommand_handlers
,
1690 COMMAND_REGISTRATION_DONE
1693 static int jlink_swd_init(void)
1695 iface
= JAYLINK_TIF_SWD
;
1700 static void jlink_swd_write_reg(uint8_t cmd
, uint32_t value
, uint32_t ap_delay_clk
)
1702 assert(!(cmd
& SWD_CMD_RnW
));
1703 jlink_swd_queue_cmd(cmd
, NULL
, value
, ap_delay_clk
);
1706 static void jlink_swd_read_reg(uint8_t cmd
, uint32_t *value
, uint32_t ap_delay_clk
)
1708 assert(cmd
& SWD_CMD_RnW
);
1709 jlink_swd_queue_cmd(cmd
, value
, 0, ap_delay_clk
);
1712 static int_least32_t jlink_swd_frequency(int_least32_t hz
)
1715 jlink_speed(hz
/ 1000);
1720 /***************************************************************************/
1721 /* J-Link tap functions */
1723 static unsigned tap_length
;
1724 /* In SWD mode use tms buffer for direction control */
1725 static uint8_t tms_buffer
[JLINK_TAP_BUFFER_SIZE
];
1726 static uint8_t tdi_buffer
[JLINK_TAP_BUFFER_SIZE
];
1727 static uint8_t tdo_buffer
[JLINK_TAP_BUFFER_SIZE
];
1729 struct pending_scan_result
{
1730 /** First bit position in tdo_buffer to read. */
1732 /** Number of bits to read. */
1734 /** Location to store the result */
1736 /** Offset in the destination buffer */
1737 unsigned buffer_offset
;
1740 #define MAX_PENDING_SCAN_RESULTS 256
1742 static int pending_scan_results_length
;
1743 static struct pending_scan_result pending_scan_results_buffer
[MAX_PENDING_SCAN_RESULTS
];
1745 static void jlink_tap_init(void)
1748 pending_scan_results_length
= 0;
1749 memset(tms_buffer
, 0, sizeof(tms_buffer
));
1750 memset(tdi_buffer
, 0, sizeof(tdi_buffer
));
1753 static void jlink_clock_data(const uint8_t *out
, unsigned out_offset
,
1754 const uint8_t *tms_out
, unsigned tms_offset
,
1755 uint8_t *in
, unsigned in_offset
,
1759 unsigned available_length
= JLINK_TAP_BUFFER_SIZE
- tap_length
/ 8;
1761 if (!available_length
||
1762 (in
&& pending_scan_results_length
== MAX_PENDING_SCAN_RESULTS
)) {
1763 if (jlink_flush() != ERROR_OK
)
1765 available_length
= JLINK_TAP_BUFFER_SIZE
;
1768 struct pending_scan_result
*pending_scan_result
=
1769 &pending_scan_results_buffer
[pending_scan_results_length
];
1771 unsigned scan_length
= length
> available_length
?
1772 available_length
: length
;
1775 buf_set_buf(out
, out_offset
, tdi_buffer
, tap_length
, scan_length
);
1777 buf_set_buf(tms_out
, tms_offset
, tms_buffer
, tap_length
, scan_length
);
1780 pending_scan_result
->first
= tap_length
;
1781 pending_scan_result
->length
= scan_length
;
1782 pending_scan_result
->buffer
= in
;
1783 pending_scan_result
->buffer_offset
= in_offset
;
1784 pending_scan_results_length
++;
1787 tap_length
+= scan_length
;
1788 out_offset
+= scan_length
;
1789 tms_offset
+= scan_length
;
1790 in_offset
+= scan_length
;
1791 length
-= scan_length
;
1792 } while (length
> 0);
1795 static int jlink_flush(void)
1803 jlink_last_state
= jtag_debug_state_machine(tms_buffer
, tdi_buffer
,
1804 tap_length
, jlink_last_state
);
1806 ret
= jaylink_jtag_io(devh
, tms_buffer
, tdi_buffer
, tdo_buffer
,
1807 tap_length
, jtag_command_version
);
1809 if (ret
!= JAYLINK_OK
) {
1810 LOG_ERROR("jaylink_jtag_io() failed: %s.", jaylink_strerror_name(ret
));
1812 return ERROR_JTAG_QUEUE_FAILED
;
1815 for (i
= 0; i
< pending_scan_results_length
; i
++) {
1816 struct pending_scan_result
*p
= &pending_scan_results_buffer
[i
];
1818 buf_set_buf(tdo_buffer
, p
->first
, p
->buffer
,
1819 p
->buffer_offset
, p
->length
);
1821 DEBUG_JTAG_IO("Pending scan result, length = %d.", p
->length
);
1829 static void fill_buffer(uint8_t *buf
, uint32_t val
, uint32_t len
)
1831 unsigned int tap_pos
= tap_length
;
1834 buf_set_u32(buf
, tap_pos
, 32, val
);
1840 buf_set_u32(buf
, tap_pos
, len
, val
);
1843 static void jlink_queue_data_out(const uint8_t *data
, uint32_t len
)
1845 const uint32_t dir_out
= 0xffffffff;
1848 bit_copy(tdi_buffer
, tap_length
, data
, 0, len
);
1850 fill_buffer(tdi_buffer
, 0, len
);
1852 fill_buffer(tms_buffer
, dir_out
, len
);
1856 static void jlink_queue_data_in(uint32_t len
)
1858 const uint32_t dir_in
= 0;
1860 fill_buffer(tms_buffer
, dir_in
, len
);
1864 static int jlink_swd_switch_seq(enum swd_special_seq seq
)
1871 LOG_DEBUG("SWD line reset");
1872 s
= swd_seq_line_reset
;
1873 s_len
= swd_seq_line_reset_len
;
1876 LOG_DEBUG("JTAG-to-SWD");
1877 s
= swd_seq_jtag_to_swd
;
1878 s_len
= swd_seq_jtag_to_swd_len
;
1881 LOG_DEBUG("SWD-to-JTAG");
1882 s
= swd_seq_swd_to_jtag
;
1883 s_len
= swd_seq_swd_to_jtag_len
;
1886 LOG_ERROR("Sequence %d not supported.", seq
);
1890 jlink_queue_data_out(s
, s_len
);
1895 static int jlink_swd_run_queue(void)
1900 LOG_DEBUG("Executing %d queued transactions.", pending_scan_results_length
);
1902 if (queued_retval
!= ERROR_OK
) {
1903 LOG_DEBUG("Skipping due to previous errors: %d.", queued_retval
);
1908 * A transaction must be followed by another transaction or at least 8 idle
1909 * cycles to ensure that data is clocked through the AP.
1911 jlink_queue_data_out(NULL
, 8);
1913 ret
= jaylink_swd_io(devh
, tms_buffer
, tdi_buffer
, tdo_buffer
, tap_length
);
1915 if (ret
!= JAYLINK_OK
) {
1916 LOG_ERROR("jaylink_swd_io() failed: %s.", jaylink_strerror_name(ret
));
1920 for (i
= 0; i
< pending_scan_results_length
; i
++) {
1921 int ack
= buf_get_u32(tdo_buffer
, pending_scan_results_buffer
[i
].first
, 3);
1923 if (ack
!= SWD_ACK_OK
) {
1924 LOG_DEBUG("SWD ack not OK: %d %s", ack
,
1925 ack
== SWD_ACK_WAIT
? "WAIT" : ack
== SWD_ACK_FAULT
? "FAULT" : "JUNK");
1926 queued_retval
= ack
== SWD_ACK_WAIT
? ERROR_WAIT
: ERROR_FAIL
;
1928 } else if (pending_scan_results_buffer
[i
].length
) {
1929 uint32_t data
= buf_get_u32(tdo_buffer
, 3 + pending_scan_results_buffer
[i
].first
, 32);
1930 int parity
= buf_get_u32(tdo_buffer
, 3 + 32 + pending_scan_results_buffer
[i
].first
, 1);
1932 if (parity
!= parity_u32(data
)) {
1933 LOG_ERROR("SWD: Read data parity mismatch.");
1934 queued_retval
= ERROR_FAIL
;
1938 if (pending_scan_results_buffer
[i
].buffer
)
1939 *(uint32_t *)pending_scan_results_buffer
[i
].buffer
= data
;
1945 ret
= queued_retval
;
1946 queued_retval
= ERROR_OK
;
1951 static void jlink_swd_queue_cmd(uint8_t cmd
, uint32_t *dst
, uint32_t data
, uint32_t ap_delay_clk
)
1953 uint8_t data_parity_trn
[DIV_ROUND_UP(32 + 1, 8)];
1954 if (tap_length
+ 46 + 8 + ap_delay_clk
>= sizeof(tdi_buffer
) * 8 ||
1955 pending_scan_results_length
== MAX_PENDING_SCAN_RESULTS
) {
1956 /* Not enough room in the queue. Run the queue. */
1957 queued_retval
= jlink_swd_run_queue();
1960 if (queued_retval
!= ERROR_OK
)
1963 cmd
|= SWD_CMD_START
| SWD_CMD_PARK
;
1965 jlink_queue_data_out(&cmd
, 8);
1967 pending_scan_results_buffer
[pending_scan_results_length
].first
= tap_length
;
1969 if (cmd
& SWD_CMD_RnW
) {
1970 /* Queue a read transaction. */
1971 pending_scan_results_buffer
[pending_scan_results_length
].length
= 32;
1972 pending_scan_results_buffer
[pending_scan_results_length
].buffer
= dst
;
1974 jlink_queue_data_in(1 + 3 + 32 + 1 + 1);
1976 /* Queue a write transaction. */
1977 pending_scan_results_buffer
[pending_scan_results_length
].length
= 0;
1978 jlink_queue_data_in(1 + 3 + 1);
1980 buf_set_u32(data_parity_trn
, 0, 32, data
);
1981 buf_set_u32(data_parity_trn
, 32, 1, parity_u32(data
));
1983 jlink_queue_data_out(data_parity_trn
, 32 + 1);
1986 pending_scan_results_length
++;
1988 /* Insert idle cycles after AP accesses to avoid WAIT. */
1989 if (cmd
& SWD_CMD_APnDP
)
1990 jlink_queue_data_out(NULL
, ap_delay_clk
);
1993 static const struct swd_driver jlink_swd
= {
1994 .init
= &jlink_swd_init
,
1995 .frequency
= &jlink_swd_frequency
,
1996 .switch_seq
= &jlink_swd_switch_seq
,
1997 .read_reg
= &jlink_swd_read_reg
,
1998 .write_reg
= &jlink_swd_write_reg
,
1999 .run
= &jlink_swd_run_queue
,
2002 static const char * const jlink_transports
[] = { "jtag", "swd", NULL
};
2004 struct jtag_interface jlink_interface
= {
2006 .commands
= jlink_command_handlers
,
2007 .transports
= jlink_transports
,
2009 .execute_queue
= &jlink_execute_queue
,
2010 .speed
= &jlink_speed
,
2011 .speed_div
= &jlink_speed_div
,
2013 .init
= &jlink_init
,
2014 .quit
= &jlink_quit
,
2015 .config_trace
= &config_trace
,
2016 .poll_trace
= &poll_trace
,