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 * This program is free software; you can redistribute it and/or modify *
15 * it under the terms of the GNU General Public License as published by *
16 * the Free Software Foundation; either version 2 of the License, or *
17 * (at your option) any later version. *
19 * This program is distributed in the hope that it will be useful, *
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
22 * GNU General Public License for more details. *
24 * You should have received a copy of the GNU General Public License *
25 * along with this program; if not, write to the *
26 * Free Software Foundation, Inc., *
27 ***************************************************************************/
36 #include <jtag/interface.h>
38 #include <jtag/commands.h>
40 #include <libjaylink/libjaylink.h>
42 static struct jaylink_context *jayctx;
43 static struct jaylink_device_handle *devh;
44 static struct jaylink_connection conn;
45 static struct jaylink_connection connlist[JAYLINK_MAX_CONNECTIONS];
46 static enum jaylink_jtag_version jtag_command_version;
47 static uint8_t caps[JAYLINK_DEV_EXT_CAPS_SIZE];
49 static uint32_t serial_number;
50 static bool use_serial_number;
51 static uint8_t usb_address;
52 static bool use_usb_address;
53 static uint8_t iface = JAYLINK_TIF_JTAG;
54 static bool trace_enabled;
56 #define JLINK_MAX_SPEED 12000
57 #define JLINK_TAP_BUFFER_SIZE 2048
59 static unsigned int swd_buffer_size = JLINK_TAP_BUFFER_SIZE;
61 /* 256 byte non-volatile memory */
62 struct device_config {
64 /* 0ffset 0x01 to 0x03 */
65 uint8_t reserved_1[3];
66 uint32_t target_power;
67 /* 0ffset 0x08 to 0x1f */
68 uint8_t reserved_2[24];
69 /* IP only for J-Link Pro */
70 uint8_t ip_address[4];
71 uint8_t subnet_mask[4];
72 /* 0ffset 0x28 to 0x2f */
73 uint8_t reserved_3[8];
74 uint8_t mac_address[6];
75 /* 0ffset 0x36 to 0xff */
76 uint8_t reserved_4[202];
77 } __attribute__ ((packed));
79 static struct device_config config;
80 static struct device_config tmp_config;
82 /* Queue command functions */
83 static void jlink_end_state(tap_state_t state);
84 static void jlink_state_move(void);
85 static void jlink_path_move(int num_states, tap_state_t *path);
86 static void jlink_runtest(int num_cycles);
87 static void jlink_scan(bool ir_scan, enum scan_type type, uint8_t *buffer,
88 int scan_size, struct scan_command *command);
89 static void jlink_reset(int trst, int srst);
90 static int jlink_swd_run_queue(struct adiv5_dap *dap);
91 static void jlink_swd_queue_cmd(struct adiv5_dap *dap, uint8_t cmd,
92 uint32_t *dst, uint32_t data);
93 static int jlink_swd_switch_seq(struct adiv5_dap *dap,
94 enum swd_special_seq seq);
96 /* J-Link tap buffer functions */
97 static void jlink_tap_init(void);
98 static int jlink_tap_execute(void);
99 static void jlink_tap_ensure_space(int scans, int bits);
100 static void jlink_tap_append_step(int tms, int tdi);
101 static void jlink_tap_append_scan(int length, uint8_t *buffer,
102 struct scan_command *command);
104 static enum tap_state jlink_last_state = TAP_RESET;
105 static int queued_retval;
107 /***************************************************************************/
108 /* External interface implementation */
110 static void jlink_execute_runtest(struct jtag_command *cmd)
112 DEBUG_JTAG_IO("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles,
113 cmd->cmd.runtest->end_state);
115 jlink_end_state(cmd->cmd.runtest->end_state);
116 jlink_runtest(cmd->cmd.runtest->num_cycles);
119 static void jlink_execute_statemove(struct jtag_command *cmd)
121 DEBUG_JTAG_IO("statemove end in %i", cmd->cmd.statemove->end_state);
123 jlink_end_state(cmd->cmd.statemove->end_state);
127 static void jlink_execute_pathmove(struct jtag_command *cmd)
129 DEBUG_JTAG_IO("pathmove: %i states, end in %i",
130 cmd->cmd.pathmove->num_states,
131 cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
133 jlink_path_move(cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path);
136 static void jlink_execute_scan(struct jtag_command *cmd)
142 DEBUG_JTAG_IO("scan end in %s", tap_state_name(cmd->cmd.scan->end_state));
144 jlink_end_state(cmd->cmd.scan->end_state);
146 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
147 DEBUG_JTAG_IO("scan input, length = %d", scan_size);
149 type = jtag_scan_type(cmd->cmd.scan);
150 jlink_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size, cmd->cmd.scan);
153 static void jlink_execute_reset(struct jtag_command *cmd)
155 DEBUG_JTAG_IO("reset trst: %i srst %i", cmd->cmd.reset->trst,
156 cmd->cmd.reset->srst);
159 jlink_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
163 static void jlink_execute_sleep(struct jtag_command *cmd)
165 DEBUG_JTAG_IO("sleep %" PRIi32 "", cmd->cmd.sleep->us);
167 jtag_sleep(cmd->cmd.sleep->us);
170 static int jlink_execute_command(struct jtag_command *cmd)
174 jlink_execute_runtest(cmd);
177 jlink_execute_statemove(cmd);
180 jlink_execute_pathmove(cmd);
183 jlink_execute_scan(cmd);
186 jlink_execute_reset(cmd);
189 jlink_execute_sleep(cmd);
192 LOG_ERROR("BUG: Unknown JTAG command type encountered.");
193 return ERROR_JTAG_QUEUE_FAILED;
199 static int jlink_execute_queue(void)
202 struct jtag_command *cmd = jtag_command_queue;
204 while (cmd != NULL) {
205 ret = jlink_execute_command(cmd);
213 return jlink_tap_execute();
216 static int jlink_speed(int speed)
223 if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_GET_SPEEDS)) {
224 ret = jaylink_get_speeds(devh, &freq, &div);
226 if (ret != JAYLINK_OK) {
227 LOG_ERROR("jaylink_get_speeds() failed: %s.",
228 jaylink_strerror_name(ret));
229 return ERROR_JTAG_DEVICE_ERROR;
233 max_speed = freq / div;
235 max_speed = JLINK_MAX_SPEED;
239 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_ADAPTIVE_CLOCKING)) {
240 LOG_ERROR("Adaptive clocking is not supported by the device.");
241 return ERROR_JTAG_NOT_IMPLEMENTED;
244 speed = JAYLINK_SPEED_ADAPTIVE_CLOCKING;
245 } else if (speed > max_speed) {
246 LOG_INFO("Reduced speed from %d kHz to %d kHz (maximum).", speed,
251 ret = jaylink_set_speed(devh, speed);
253 if (ret != JAYLINK_OK) {
254 LOG_ERROR("jaylink_set_speed() failed: %s.",
255 jaylink_strerror_name(ret));
256 return ERROR_JTAG_DEVICE_ERROR;
262 static int jlink_speed_div(int speed, int *khz)
269 static int jlink_khz(int khz, int *jtag_speed)
276 static bool read_device_config(struct device_config *cfg)
280 ret = jaylink_read_raw_config(devh, (uint8_t *)cfg);
282 if (ret != JAYLINK_OK) {
283 LOG_ERROR("jaylink_read_raw_config() failed: %s.",
284 jaylink_strerror_name(ret));
288 if (cfg->usb_address == 0xff)
289 cfg->usb_address = 0x00;
291 if (cfg->target_power == 0xffffffff)
292 cfg->target_power = 0;
297 static int select_interface(void)
302 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_SELECT_TIF)) {
303 if (iface != JAYLINK_TIF_JTAG) {
304 LOG_ERROR("Device supports JTAG transport only.");
305 return ERROR_JTAG_INIT_FAILED;
311 ret = jaylink_get_available_interfaces(devh, &interfaces);
313 if (ret != JAYLINK_OK) {
314 LOG_ERROR("jaylink_get_available_interfaces() failed: %s.",
315 jaylink_strerror_name(ret));
316 return ERROR_JTAG_INIT_FAILED;
319 if (!(interfaces & (1 << iface))) {
320 LOG_ERROR("Selected transport is not supported by the device.");
321 return ERROR_JTAG_INIT_FAILED;
324 ret = jaylink_select_interface(devh, iface);
327 LOG_ERROR("jaylink_select_interface() failed: %s.",
328 jaylink_strerror_name(ret));
329 return ERROR_JTAG_INIT_FAILED;
335 static int jlink_register(void)
341 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_REGISTER))
344 ret = jaylink_register(devh, &conn, connlist, NULL, NULL);
347 LOG_ERROR("jaylink_register() failed: %s.",
348 jaylink_strerror_name(ret));
352 handle_found = false;
354 for (i = 0; i < ret; i++) {
355 if (connlist[i].handle == conn.handle) {
362 LOG_ERROR("Registration failed: maximum number of connections on the "
371 * Adjust the SWD transaction buffer size depending on the free device internal
372 * memory. This ensures that the SWD transactions sent to the device do not
373 * exceed the internal memory of the device.
375 static bool adjust_swd_buffer_size(void)
380 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_GET_FREE_MEMORY))
383 ret = jaylink_get_free_memory(devh, &tmp);
385 if (ret != JAYLINK_OK) {
386 LOG_ERROR("jaylink_get_free_memory() failed: %s.",
387 jaylink_strerror_name(ret));
392 LOG_ERROR("Not enough free device internal memory: %u bytes.", tmp);
396 tmp = MIN(JLINK_TAP_BUFFER_SIZE, (tmp - 16) / 2);
398 if (tmp != swd_buffer_size) {
399 swd_buffer_size = tmp;
400 LOG_DEBUG("Adjusted SWD transaction buffer size to %u bytes.",
407 static int jlink_init(void)
410 struct jaylink_device **devs;
414 char *firmware_version;
415 struct jaylink_hardware_version hwver;
416 struct jaylink_hardware_status hwstatus;
418 ret = jaylink_init(&jayctx);
420 if (ret != JAYLINK_OK) {
421 LOG_ERROR("jaylink_init() failed: %s.",
422 jaylink_strerror_name(ret));
423 return ERROR_JTAG_INIT_FAILED;
426 ret = jaylink_get_device_list(jayctx, &devs);
429 LOG_ERROR("jaylink_get_device_list() failed: %s.",
430 jaylink_strerror_name(ret));
431 jaylink_exit(jayctx);
432 return ERROR_JTAG_INIT_FAILED;
435 found_device = false;
437 if (!use_serial_number && !use_usb_address)
438 LOG_INFO("No device selected, using first device.");
440 for (i = 0; devs[i]; i++) {
441 jaylink_device_get_serial_number(devs[i], &tmp);
442 ret = jaylink_device_get_usb_address(devs[i]);
444 if (use_usb_address && usb_address != ret)
447 if (use_serial_number && tmp != serial_number)
450 ret = jaylink_open(devs[i], &devh);
452 if (ret != JAYLINK_OK) {
453 LOG_ERROR("Failed to open device: %s.", jaylink_strerror_name(ret));
461 jaylink_free_device_list(devs, 1);
464 LOG_ERROR("No J-Link device found.");
465 jaylink_exit(jayctx);
466 return ERROR_JTAG_INIT_FAILED;
470 * Be careful with changing the following initialization sequence because
471 * some devices are known to be sensitive regarding the order.
474 ret = jaylink_get_firmware_version(devh, &firmware_version);
477 LOG_INFO("%s", firmware_version);
478 free(firmware_version);
480 LOG_WARNING("Device responds empty firmware version string.");
482 LOG_ERROR("jaylink_get_firmware_version() failed: %s.",
483 jaylink_strerror_name(ret));
485 jaylink_exit(jayctx);
486 return ERROR_JTAG_INIT_FAILED;
489 memset(caps, 0, JAYLINK_DEV_EXT_CAPS_SIZE);
490 ret = jaylink_get_caps(devh, caps);
492 if (ret != JAYLINK_OK) {
493 LOG_ERROR("jaylink_get_caps() failed: %s.", jaylink_strerror_name(ret));
495 jaylink_exit(jayctx);
496 return ERROR_JTAG_INIT_FAILED;
499 if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_GET_EXT_CAPS)) {
500 ret = jaylink_get_extended_caps(devh, caps);
502 if (ret != JAYLINK_OK) {
503 LOG_ERROR("jaylink_get_extended_caps() failed: %s.",
504 jaylink_strerror_name(ret));
506 jaylink_exit(jayctx);
507 return ERROR_JTAG_INIT_FAILED;
511 jtag_command_version = JAYLINK_JTAG_V2;
513 if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_GET_HW_VERSION)) {
514 ret = jaylink_get_hardware_version(devh, &hwver);
516 if (ret != JAYLINK_OK) {
517 LOG_ERROR("Failed to retrieve hardware version: %s.",
518 jaylink_strerror_name(ret));
520 jaylink_exit(jayctx);
521 return ERROR_JTAG_INIT_FAILED;
524 LOG_INFO("Hardware version: %u.%02u", hwver.major, hwver.minor);
526 if (hwver.major >= 5)
527 jtag_command_version = JAYLINK_JTAG_V3;
530 if (iface == JAYLINK_TIF_SWD) {
532 * Adjust the SWD transaction buffer size in case there is already
533 * allocated memory on the device. This happens for example if the
534 * memory for SWO capturing is still allocated because the software
535 * which used the device before has not been shut down properly.
537 if (!adjust_swd_buffer_size()) {
539 jaylink_exit(jayctx);
540 return ERROR_JTAG_INIT_FAILED;
544 if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG)) {
545 if (!read_device_config(&config)) {
546 LOG_ERROR("Failed to read device configuration data.");
548 jaylink_exit(jayctx);
549 return ERROR_JTAG_INIT_FAILED;
552 memcpy(&tmp_config, &config, sizeof(struct device_config));
555 ret = jaylink_get_hardware_status(devh, &hwstatus);
557 if (ret != JAYLINK_OK) {
558 LOG_ERROR("jaylink_get_hardware_status() failed: %s.",
559 jaylink_strerror_name(ret));
561 jaylink_exit(jayctx);
562 return ERROR_JTAG_INIT_FAILED;
565 LOG_INFO("VTarget = %u.%03u V", hwstatus.target_voltage / 1000,
566 hwstatus.target_voltage % 1000);
574 ret = jlink_register();
576 if (ret != ERROR_OK) {
578 jaylink_exit(jayctx);
579 return ERROR_JTAG_INIT_FAILED;
582 ret = select_interface();
584 if (ret != ERROR_OK) {
586 jaylink_exit(jayctx);
594 jlink_speed(jtag_get_speed_khz());
596 if (iface == JAYLINK_TIF_JTAG) {
598 * J-Link devices with firmware version v5 and v6 seems to have an issue
599 * if the first tap move is not divisible by 8, so we send a TLR on
602 for (i = 0; i < 8; i++)
603 jlink_tap_append_step(1, 0);
611 static int jlink_quit(void)
616 ret = jaylink_swo_stop(devh);
618 if (ret != JAYLINK_OK)
619 LOG_ERROR("jaylink_swo_stop() failed: %s.",
620 jaylink_strerror_name(ret));
623 if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_REGISTER)) {
624 ret = jaylink_unregister(devh, &conn, connlist, NULL, NULL);
627 LOG_ERROR("jaylink_unregister() failed: %s.",
628 jaylink_strerror_name(ret));
632 jaylink_exit(jayctx);
637 /***************************************************************************/
638 /* Queue command implementations */
640 static void jlink_end_state(tap_state_t state)
642 if (tap_is_state_stable(state))
643 tap_set_end_state(state);
645 LOG_ERROR("BUG: %i is not a valid end state", state);
650 /* Goes to the end state. */
651 static void jlink_state_move(void)
656 uint8_t tms_scan_bits;
658 tms_scan = tap_get_tms_path(tap_get_state(), tap_get_end_state());
659 tms_scan_bits = tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
661 for (i = 0; i < tms_scan_bits; i++) {
662 tms = (tms_scan >> i) & 1;
663 jlink_tap_append_step(tms, 0);
666 tap_set_state(tap_get_end_state());
669 static void jlink_path_move(int num_states, tap_state_t *path)
673 for (i = 0; i < num_states; i++) {
674 if (path[i] == tap_state_transition(tap_get_state(), false))
675 jlink_tap_append_step(0, 0);
676 else if (path[i] == tap_state_transition(tap_get_state(), true))
677 jlink_tap_append_step(1, 0);
679 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition.",
680 tap_state_name(tap_get_state()), tap_state_name(path[i]));
684 tap_set_state(path[i]);
687 tap_set_end_state(tap_get_state());
690 static void jlink_runtest(int num_cycles)
694 tap_state_t saved_end_state = tap_get_end_state();
696 jlink_tap_ensure_space(1, num_cycles + 16);
698 /* Only do a state_move when we're not already in IDLE. */
699 if (tap_get_state() != TAP_IDLE) {
700 jlink_end_state(TAP_IDLE);
705 /* Execute num_cycles. */
706 for (i = 0; i < num_cycles; i++)
707 jlink_tap_append_step(0, 0);
709 /* Finish in end_state. */
710 jlink_end_state(saved_end_state);
712 if (tap_get_state() != tap_get_end_state())
716 static void jlink_scan(bool ir_scan, enum scan_type type, uint8_t *buffer,
717 int scan_size, struct scan_command *command)
719 tap_state_t saved_end_state;
721 jlink_tap_ensure_space(1, scan_size + 16);
723 saved_end_state = tap_get_end_state();
725 /* Move to appropriate scan state. */
726 jlink_end_state(ir_scan ? TAP_IRSHIFT : TAP_DRSHIFT);
728 /* Only move if we're not already there. */
729 if (tap_get_state() != tap_get_end_state())
732 jlink_end_state(saved_end_state);
735 jlink_tap_append_scan(scan_size, buffer, command);
737 /* We are in Exit1, go to Pause. */
738 jlink_tap_append_step(0, 0);
740 tap_set_state(ir_scan ? TAP_IRPAUSE : TAP_DRPAUSE);
742 if (tap_get_state() != tap_get_end_state())
746 static void jlink_reset(int trst, int srst)
748 LOG_DEBUG("TRST: %i, SRST: %i.", trst, srst);
750 /* Signals are active low. */
752 jaylink_set_reset(devh);
755 jaylink_clear_reset(devh);
758 jaylink_jtag_clear_trst(devh);
761 jaylink_jtag_set_trst(devh);
764 COMMAND_HANDLER(jlink_usb_command)
767 command_print(CMD_CTX, "Need exactly one argument for jlink usb.");
768 return ERROR_COMMAND_SYNTAX_ERROR;
771 if (sscanf(CMD_ARGV[0], "%" SCNd8, &usb_address) != 1) {
772 command_print(CMD_CTX, "Invalid USB address: %s.", CMD_ARGV[0]);
776 if (usb_address > JAYLINK_USB_ADDRESS_3) {
777 command_print(CMD_CTX, "Invalid USB address: %s.", CMD_ARGV[0]);
781 use_serial_number = false;
782 use_usb_address = true;
787 COMMAND_HANDLER(jlink_serial_command)
790 command_print(CMD_CTX, "Need exactly one argument for jlink serial.");
791 return ERROR_COMMAND_SYNTAX_ERROR;
794 if (sscanf(CMD_ARGV[0], "%" SCNd32, &serial_number) != 1) {
795 command_print(CMD_CTX, "Invalid serial number: %s.", CMD_ARGV[0]);
799 use_serial_number = true;
800 use_usb_address = false;
805 COMMAND_HANDLER(jlink_handle_hwstatus_command)
808 struct jaylink_hardware_status status;
810 ret = jaylink_get_hardware_status(devh, &status);
812 if (ret != JAYLINK_OK) {
813 command_print(CMD_CTX, "jaylink_get_hardware_status() failed: %s.",
814 jaylink_strerror_name(ret));
818 command_print(CMD_CTX, "VTarget = %u.%03u V",
819 status.target_voltage / 1000, status.target_voltage % 1000);
821 command_print(CMD_CTX, "TCK = %u TDI = %u TDO = %u TMS = %u SRST = %u "
822 "TRST = %u", status.tck, status.tdi, status.tdo, status.tms,
823 status.tres, status.trst);
825 if (status.target_voltage < 1500)
826 command_print(CMD_CTX, "Target voltage too low. Check target power.");
831 COMMAND_HANDLER(jlink_handle_free_memory_command)
836 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_GET_FREE_MEMORY)) {
837 command_print(CMD_CTX, "Retrieval of free memory is not supported by "
842 ret = jaylink_get_free_memory(devh, &tmp);
844 if (ret != JAYLINK_OK) {
845 command_print(CMD_CTX, "jaylink_get_free_memory() failed: %s.",
846 jaylink_strerror_name(ret));
850 command_print(CMD_CTX, "Device has %u bytes of free memory.", tmp);
855 COMMAND_HANDLER(jlink_handle_jlink_jtag_command)
861 switch (jtag_command_version) {
862 case JAYLINK_JTAG_V2:
865 case JAYLINK_JTAG_V3:
872 command_print(CMD_CTX, "JTAG command version: %i", version);
873 } else if (CMD_ARGC == 1) {
874 if (sscanf(CMD_ARGV[0], "%i", &tmp) != 1) {
875 command_print(CMD_CTX, "Invalid argument: %s.", CMD_ARGV[0]);
876 return ERROR_COMMAND_SYNTAX_ERROR;
881 jtag_command_version = JAYLINK_JTAG_V2;
884 jtag_command_version = JAYLINK_JTAG_V3;
887 command_print(CMD_CTX, "Invalid argument: %s.", CMD_ARGV[0]);
888 return ERROR_COMMAND_SYNTAX_ERROR;
891 command_print(CMD_CTX, "Need exactly one argument for jlink jtag.");
892 return ERROR_COMMAND_SYNTAX_ERROR;
898 COMMAND_HANDLER(jlink_handle_target_power_command)
904 command_print(CMD_CTX, "Need exactly one argument for jlink "
906 return ERROR_COMMAND_SYNTAX_ERROR;
909 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_SET_TARGET_POWER)) {
910 command_print(CMD_CTX, "Target power supply is not supported by the "
915 if (!strcmp(CMD_ARGV[0], "on")) {
917 } else if (!strcmp(CMD_ARGV[0], "off")) {
920 command_print(CMD_CTX, "Invalid argument: %s.", CMD_ARGV[0]);
924 ret = jaylink_set_target_power(devh, enable);
926 if (ret != JAYLINK_OK) {
927 command_print(CMD_CTX, "jaylink_set_target_power() failed: %s.",
928 jaylink_strerror_name(ret));
935 static void show_config_usb_address(struct command_context *ctx)
937 if (config.usb_address != tmp_config.usb_address)
938 command_print(ctx, "USB address: %u [%u]", config.usb_address,
939 tmp_config.usb_address);
941 command_print(ctx, "USB address: %u", config.usb_address);
944 static void show_config_ip_address(struct command_context *ctx)
946 if (!memcmp(config.ip_address, tmp_config.ip_address, 4))
947 command_print(ctx, "IP address: %d.%d.%d.%d",
948 config.ip_address[3], config.ip_address[2],
949 config.ip_address[1], config.ip_address[0]);
951 command_print(ctx, "IP address: %d.%d.%d.%d [%d.%d.%d.%d]",
952 config.ip_address[3], config.ip_address[2],
953 config.ip_address[1], config.ip_address[0],
954 tmp_config.ip_address[3], tmp_config.ip_address[2],
955 tmp_config.ip_address[1], tmp_config.ip_address[0]);
957 if (!memcmp(config.subnet_mask, tmp_config.subnet_mask, 4))
958 command_print(ctx, "Subnet mask: %d.%d.%d.%d",
959 config.subnet_mask[3], config.subnet_mask[2],
960 config.subnet_mask[1], config.subnet_mask[0]);
962 command_print(ctx, "Subnet mask: %d.%d.%d.%d [%d.%d.%d.%d]",
963 config.subnet_mask[3], config.subnet_mask[2],
964 config.subnet_mask[1], config.subnet_mask[0],
965 tmp_config.subnet_mask[3], tmp_config.subnet_mask[2],
966 tmp_config.subnet_mask[1], tmp_config.subnet_mask[0]);
969 static void show_config_mac_address(struct command_context *ctx)
971 if (!memcmp(config.mac_address, tmp_config.mac_address, 6))
972 command_print(ctx, "MAC address: %.02x:%.02x:%.02x:%.02x:%.02x:%.02x",
973 config.mac_address[5], config.mac_address[4],
974 config.mac_address[3], config.mac_address[2],
975 config.mac_address[1], config.mac_address[0]);
977 command_print(ctx, "MAC address: %.02x:%.02x:%.02x:%.02x:%.02x:%.02x "
978 "[%.02x:%.02x:%.02x:%.02x:%.02x:%.02x]",
979 config.mac_address[5], config.mac_address[4],
980 config.mac_address[3], config.mac_address[2],
981 config.mac_address[1], config.mac_address[0],
982 tmp_config.mac_address[5], tmp_config.mac_address[4],
983 tmp_config.mac_address[3], tmp_config.mac_address[2],
984 tmp_config.mac_address[1], tmp_config.mac_address[0]);
987 static void show_config_target_power(struct command_context *ctx)
989 const char *target_power;
990 const char *current_target_power;
992 if (!config.target_power)
993 target_power = "off";
997 if (!tmp_config.target_power)
998 current_target_power = "off";
1000 current_target_power = "on";
1002 if (config.target_power != tmp_config.target_power)
1003 command_print(ctx, "Target power supply: %s [%s]", target_power,
1004 current_target_power);
1006 command_print(ctx, "Target power supply: %s", target_power);
1009 static void show_config(struct command_context *ctx)
1011 command_print(ctx, "J-Link device configuration:");
1013 show_config_usb_address(ctx);
1015 if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_SET_TARGET_POWER))
1016 show_config_target_power(ctx);
1018 if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_ETHERNET)) {
1019 show_config_ip_address(ctx);
1020 show_config_mac_address(ctx);
1024 static int poll_trace(uint8_t *buf, size_t *size)
1031 ret = jaylink_swo_read(devh, buf, &length);
1033 if (ret != JAYLINK_OK) {
1034 LOG_ERROR("jaylink_swo_read() failed: %s.", jaylink_strerror_name(ret));
1043 static uint32_t calculate_trace_buffer_size(void)
1048 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_GET_FREE_MEMORY))
1051 ret = jaylink_get_free_memory(devh, &tmp);
1053 if (ret != JAYLINK_OK) {
1054 LOG_ERROR("jaylink_get_free_memory() failed: %s.",
1055 jaylink_strerror_name(ret));
1059 if (tmp > 0x3fff || tmp <= 0x600)
1064 return tmp & 0xffffff00;
1067 static bool check_trace_freq(uint32_t freq, uint32_t div, uint32_t trace_freq)
1072 min = fabs(1.0 - (freq / ((double)trace_freq * div)));
1074 while (freq / div > 0) {
1075 deviation = fabs(1.0 - (freq / ((double)trace_freq * div)));
1077 if (deviation < 0.03) {
1078 LOG_DEBUG("Found suitable frequency divider %u with deviation of "
1079 "%.02f %%.", div, deviation);
1083 if (deviation < min)
1089 LOG_ERROR("Selected trace frequency is not supported by the device. "
1090 "Please choose a different trace frequency.");
1091 LOG_ERROR("Maximum permitted deviation is 3.00 %%, but only %.02f %% "
1092 "could be achieved.", min * 100);
1097 static int config_trace(bool enabled, enum tpio_pin_protocol pin_protocol,
1098 uint32_t port_size, unsigned int *trace_freq)
1101 uint32_t buffer_size;
1105 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_SWO)) {
1106 LOG_ERROR("Trace capturing is not supported by the device.");
1110 if (pin_protocol != ASYNC_UART) {
1111 LOG_ERROR("Selected pin protocol is not supported.");
1115 trace_enabled = enabled;
1117 ret = jaylink_swo_stop(devh);
1119 if (ret != JAYLINK_OK) {
1120 LOG_ERROR("jaylink_swo_stop() failed: %s.", jaylink_strerror_name(ret));
1126 * Adjust the SWD transaction buffer size as stopping SWO capturing
1127 * deallocates device internal memory.
1129 if (!adjust_swd_buffer_size())
1135 buffer_size = calculate_trace_buffer_size();
1138 LOG_ERROR("Not enough free device memory to start trace capturing.");
1142 ret = jaylink_swo_get_speeds(devh, JAYLINK_SWO_MODE_UART, &freq, &div);
1144 if (ret != JAYLINK_OK) {
1145 LOG_ERROR("jaylink_swo_get_speeds() failed: %s.",
1146 jaylink_strerror_name(ret));
1151 *trace_freq = freq / div;
1153 if (!check_trace_freq(freq, div, *trace_freq))
1156 LOG_DEBUG("Using %u bytes device memory for trace capturing.", buffer_size);
1158 ret = jaylink_swo_start(devh, JAYLINK_SWO_MODE_UART, *trace_freq,
1161 if (ret != JAYLINK_OK) {
1162 LOG_ERROR("jaylink_start_swo() failed: %s.",
1163 jaylink_strerror_name(ret));
1168 * Adjust the SWD transaction buffer size as starting SWO capturing
1169 * allocates device internal memory.
1171 if (!adjust_swd_buffer_size())
1177 COMMAND_HANDLER(jlink_handle_config_usb_address_command)
1181 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG)) {
1182 command_print(CMD_CTX, "Reading configuration is not supported by the "
1188 show_config_usb_address(CMD_CTX);
1189 } else if (CMD_ARGC == 1) {
1190 if (sscanf(CMD_ARGV[0], "%" SCNd8, &tmp) != 1) {
1191 command_print(CMD_CTX, "Invalid USB address: %s.", CMD_ARGV[0]);
1195 if (tmp > JAYLINK_USB_ADDRESS_3) {
1196 command_print(CMD_CTX, "Invalid USB address: %u.", tmp);
1200 tmp_config.usb_address = tmp;
1202 command_print(CMD_CTX, "Need exactly one argument for jlink config "
1204 return ERROR_COMMAND_SYNTAX_ERROR;
1210 COMMAND_HANDLER(jlink_handle_config_target_power_command)
1214 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG)) {
1215 command_print(CMD_CTX, "Reading configuration is not supported by the "
1220 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_SET_TARGET_POWER)) {
1221 command_print(CMD_CTX, "Target power supply is not supported by the "
1227 show_config_target_power(CMD_CTX);
1228 } else if (CMD_ARGC == 1) {
1229 if (!strcmp(CMD_ARGV[0], "on")) {
1231 } else if (!strcmp(CMD_ARGV[0], "off")) {
1234 command_print(CMD_CTX, "Invalid argument: %s.", CMD_ARGV[0]);
1238 tmp_config.target_power = enable;
1240 command_print(CMD_CTX, "Need exactly one argument for jlink config "
1242 return ERROR_COMMAND_SYNTAX_ERROR;
1248 COMMAND_HANDLER(jlink_handle_config_mac_address_command)
1255 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG)) {
1256 command_print(CMD_CTX, "Reading configuration is not supported by the "
1261 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_ETHERNET)) {
1262 command_print(CMD_CTX, "Ethernet connectivity is not supported by the "
1268 show_config_mac_address(CMD_CTX);
1269 } else if (CMD_ARGC == 1) {
1272 if ((strlen(str) != 17) || (str[2] != ':' || str[5] != ':' || \
1273 str[8] != ':' || str[11] != ':' || str[14] != ':')) {
1274 command_print(CMD_CTX, "Invalid MAC address format.");
1275 return ERROR_COMMAND_SYNTAX_ERROR;
1278 for (i = 5; i >= 0; i--) {
1279 addr[i] = strtoul(str, &e, 16);
1283 if (!(addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5])) {
1284 command_print(CMD_CTX, "Invalid MAC address: zero address.");
1285 return ERROR_COMMAND_SYNTAX_ERROR;
1288 if (!(0x01 & addr[0])) {
1289 command_print(CMD_CTX, "Invalid MAC address: multicast address.");
1290 return ERROR_COMMAND_SYNTAX_ERROR;
1293 memcpy(tmp_config.mac_address, addr, sizeof(addr));
1295 command_print(CMD_CTX, "Need exactly one argument for jlink config "
1297 return ERROR_COMMAND_SYNTAX_ERROR;
1303 static bool string_to_ip(const char *s, uint8_t *ip, int *pos)
1307 const char *s_save = s;
1313 for (i = 0; i < 4; i++) {
1314 lip[i] = strtoul(s, &e, 10);
1316 if (*e != '.' && i != 3)
1323 memcpy(ip, lip, sizeof(lip));
1328 static void cpy_ip(uint8_t *dst, uint8_t *src)
1332 for (i = 0, j = 3; i < 4; i++, j--)
1336 COMMAND_HANDLER(jlink_handle_config_ip_address_command)
1338 uint8_t ip_address[4];
1339 uint32_t subnet_mask = 0;
1341 uint8_t subnet_bits = 24;
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_ETHERNET)) {
1350 command_print(CMD_CTX, "Ethernet connectivity is not supported by the "
1356 show_config_ip_address(CMD_CTX);
1358 if (!string_to_ip(CMD_ARGV[0], ip_address, &i))
1359 return ERROR_COMMAND_SYNTAX_ERROR;
1361 len = strlen(CMD_ARGV[0]);
1363 /* Check for format A.B.C.D/E. */
1365 if (CMD_ARGV[0][i] != '/')
1366 return ERROR_COMMAND_SYNTAX_ERROR;
1368 COMMAND_PARSE_NUMBER(u8, CMD_ARGV[0] + i + 1, subnet_bits);
1369 } else if (CMD_ARGC > 1) {
1370 if (!string_to_ip(CMD_ARGV[1], (uint8_t *)&subnet_mask, &i))
1371 return ERROR_COMMAND_SYNTAX_ERROR;
1375 subnet_mask = (uint32_t)(subnet_bits < 32 ?
1376 ((1ULL << subnet_bits) - 1) : 0xffffffff);
1378 cpy_ip(tmp_config.ip_address, ip_address);
1379 cpy_ip(tmp_config.subnet_mask, (uint8_t *)&subnet_mask);
1385 COMMAND_HANDLER(jlink_handle_config_reset_command)
1387 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG))
1390 memcpy(&tmp_config, &config, sizeof(struct device_config));
1396 COMMAND_HANDLER(jlink_handle_config_write_command)
1400 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG)) {
1401 command_print(CMD_CTX, "Reading configuration is not supported by the "
1406 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_WRITE_CONFIG)) {
1407 command_print(CMD_CTX, "Writing configuration is not supported by the "
1412 if (!memcmp(&config, &tmp_config, sizeof(struct device_config))) {
1413 command_print(CMD_CTX, "Operation not performed due to no changes in "
1414 "the configuration.");
1418 ret = jaylink_write_raw_config(devh, (const uint8_t *)&tmp_config);
1420 if (ret != JAYLINK_OK) {
1421 LOG_ERROR("jaylink_write_raw_config() failed: %s.",
1422 jaylink_strerror_name(ret));
1426 if (!read_device_config(&config)) {
1427 LOG_ERROR("Failed to read device configuration for verification.");
1431 if (memcmp(&config, &tmp_config, sizeof(struct device_config))) {
1432 LOG_ERROR("Verification of device configuration failed. Please check "
1437 memcpy(&tmp_config, &config, sizeof(struct device_config));
1438 command_print(CMD_CTX, "The new device configuration applies after power "
1439 "cycling the J-Link device.");
1444 COMMAND_HANDLER(jlink_handle_config_command)
1446 if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG)) {
1447 command_print(CMD_CTX, "Device doesn't support reading configuration.");
1452 show_config(CMD_CTX);
1457 static const struct command_registration jlink_config_subcommand_handlers[] = {
1460 .handler = &jlink_handle_config_usb_address_command,
1461 .mode = COMMAND_EXEC,
1462 .help = "set the USB address",
1466 .name = "targetpower",
1467 .handler = &jlink_handle_config_target_power_command,
1468 .mode = COMMAND_EXEC,
1469 .help = "set the target power supply",
1474 .handler = &jlink_handle_config_mac_address_command,
1475 .mode = COMMAND_EXEC,
1476 .help = "set the MAC Address",
1477 .usage = "[ff:ff:ff:ff:ff:ff]",
1481 .handler = &jlink_handle_config_ip_address_command,
1482 .mode = COMMAND_EXEC,
1483 .help = "set the IP address, where A.B.C.D is the IP address, "
1484 "E the bit of the subnet mask, F.G.H.I the subnet mask",
1485 .usage = "[A.B.C.D[/E] [F.G.H.I]]",
1489 .handler = &jlink_handle_config_reset_command,
1490 .mode = COMMAND_EXEC,
1491 .help = "undo configuration changes"
1495 .handler = &jlink_handle_config_write_command,
1496 .mode = COMMAND_EXEC,
1497 .help = "write configuration to the device"
1499 COMMAND_REGISTRATION_DONE
1502 static const struct command_registration jlink_subcommand_handlers[] = {
1505 .handler = &jlink_handle_jlink_jtag_command,
1506 .mode = COMMAND_EXEC,
1507 .help = "select the JTAG command version",
1511 .name = "targetpower",
1512 .handler = &jlink_handle_target_power_command,
1513 .mode = COMMAND_EXEC,
1514 .help = "set the target power supply",
1519 .handler = &jlink_handle_free_memory_command,
1520 .mode = COMMAND_EXEC,
1521 .help = "show free device memory"
1525 .handler = &jlink_handle_hwstatus_command,
1526 .mode = COMMAND_EXEC,
1527 .help = "show the hardware status"
1531 .handler = &jlink_usb_command,
1532 .mode = COMMAND_CONFIG,
1533 .help = "set the USB address of the device that should be used",
1538 .handler = &jlink_serial_command,
1539 .mode = COMMAND_CONFIG,
1540 .help = "set the serial number of the device that should be used",
1541 .usage = "<serial number>"
1545 .handler = &jlink_handle_config_command,
1546 .mode = COMMAND_EXEC,
1547 .help = "access the device configuration. If no argument is given "
1548 "this will show the device configuration",
1549 .chain = jlink_config_subcommand_handlers,
1551 COMMAND_REGISTRATION_DONE
1554 static const struct command_registration jlink_command_handlers[] = {
1557 .mode = COMMAND_ANY,
1558 .help = "perform jlink management",
1559 .chain = jlink_subcommand_handlers,
1561 COMMAND_REGISTRATION_DONE
1564 static int jlink_swd_init(void)
1566 iface = JAYLINK_TIF_SWD;
1571 static void jlink_swd_write_reg(struct adiv5_dap *dap, uint8_t cmd,
1574 assert(!(cmd & SWD_CMD_RnW));
1575 jlink_swd_queue_cmd(dap, cmd, NULL, value);
1578 static void jlink_swd_read_reg(struct adiv5_dap *dap, uint8_t cmd,
1581 assert(cmd & SWD_CMD_RnW);
1582 jlink_swd_queue_cmd(dap, cmd, value, 0);
1585 static int_least32_t jlink_swd_frequency(struct adiv5_dap *dap,
1589 jlink_speed(hz / 1000);
1594 /***************************************************************************/
1595 /* J-Link tap functions */
1597 static unsigned tap_length;
1598 /* In SWD mode use tms buffer for direction control */
1599 static uint8_t tms_buffer[JLINK_TAP_BUFFER_SIZE];
1600 static uint8_t tdi_buffer[JLINK_TAP_BUFFER_SIZE];
1601 static uint8_t tdo_buffer[JLINK_TAP_BUFFER_SIZE];
1603 struct pending_scan_result {
1604 int first; /* First bit position in tdo_buffer to read. */
1605 int length; /* Number of bits to read. */
1606 struct scan_command *command; /* Corresponding scan command. */
1610 #define MAX_PENDING_SCAN_RESULTS 256
1612 static int pending_scan_results_length;
1613 static struct pending_scan_result pending_scan_results_buffer[MAX_PENDING_SCAN_RESULTS];
1615 static void jlink_tap_init(void)
1618 pending_scan_results_length = 0;
1621 static void jlink_tap_ensure_space(int scans, int bits)
1623 int available_scans = MAX_PENDING_SCAN_RESULTS - pending_scan_results_length;
1624 int available_bits = JLINK_TAP_BUFFER_SIZE * 8 - tap_length - 32;
1626 if (scans > available_scans || bits > available_bits)
1627 jlink_tap_execute();
1630 static void jlink_tap_append_step(int tms, int tdi)
1632 int index_var = tap_length / 8;
1634 assert(index_var < JLINK_TAP_BUFFER_SIZE);
1636 int bit_index = tap_length % 8;
1637 uint8_t bit = 1 << bit_index;
1639 /* We do not pad TMS, so be sure to initialize all bits. */
1641 tms_buffer[index_var] = tdi_buffer[index_var] = 0;
1644 tms_buffer[index_var] |= bit;
1646 tms_buffer[index_var] &= ~bit;
1649 tdi_buffer[index_var] |= bit;
1651 tdi_buffer[index_var] &= ~bit;
1656 static void jlink_tap_append_scan(int length, uint8_t *buffer,
1657 struct scan_command *command)
1659 struct pending_scan_result *pending_scan_result =
1660 &pending_scan_results_buffer[pending_scan_results_length];
1663 pending_scan_result->first = tap_length;
1664 pending_scan_result->length = length;
1665 pending_scan_result->command = command;
1666 pending_scan_result->buffer = buffer;
1668 for (i = 0; i < length; i++) {
1669 int tms = (i < (length - 1)) ? 0 : 1;
1670 int tdi = (buffer[i / 8] & (1 << (i % 8))) != 0;
1671 jlink_tap_append_step(tms, tdi);
1674 pending_scan_results_length++;
1678 * Pad and send a tap sequence to the device, and receive the answer. For the
1679 * purpose of padding we assume that we are in idle or pause state.
1681 static int jlink_tap_execute(void)
1689 jlink_last_state = jtag_debug_state_machine(tms_buffer, tdi_buffer,
1690 tap_length, jlink_last_state);
1692 jlink_last_state = jtag_debug_state_machine(tms_buffer, tdi_buffer,
1693 tap_length, jlink_last_state);
1695 ret = jaylink_jtag_io(devh, tms_buffer, tdi_buffer, tdo_buffer,
1696 tap_length, jtag_command_version);
1698 if (ret != JAYLINK_OK) {
1699 LOG_ERROR("jaylink_jtag_io() failed: %s.", jaylink_strerror_name(ret));
1701 return ERROR_JTAG_QUEUE_FAILED;
1704 for (i = 0; i < pending_scan_results_length; i++) {
1705 struct pending_scan_result *pending_scan_result = &pending_scan_results_buffer[i];
1706 uint8_t *buffer = pending_scan_result->buffer;
1707 int length = pending_scan_result->length;
1708 int first = pending_scan_result->first;
1709 struct scan_command *command = pending_scan_result->command;
1711 /* Copy to buffer. */
1712 buf_set_buf(tdo_buffer, first, buffer, 0, length);
1714 DEBUG_JTAG_IO("Pending scan result, length = %d.", length);
1716 if (jtag_read_buffer(buffer, command) != ERROR_OK) {
1718 return ERROR_JTAG_QUEUE_FAILED;
1721 if (pending_scan_result->buffer != NULL)
1722 free(pending_scan_result->buffer);
1730 static void fill_buffer(uint8_t *buf, uint32_t val, uint32_t len)
1732 unsigned int tap_pos = tap_length;
1735 buf_set_u32(buf, tap_pos, 32, val);
1741 buf_set_u32(buf, tap_pos, len, val);
1744 static void jlink_queue_data_out(const uint8_t *data, uint32_t len)
1746 const uint32_t dir_out = 0xffffffff;
1749 bit_copy(tdi_buffer, tap_length, data, 0, len);
1751 fill_buffer(tdi_buffer, 0, len);
1753 fill_buffer(tms_buffer, dir_out, len);
1757 static void jlink_queue_data_in(uint32_t len)
1759 const uint32_t dir_in = 0;
1761 fill_buffer(tms_buffer, dir_in, len);
1765 static int jlink_swd_switch_seq(struct adiv5_dap *dap, enum swd_special_seq seq)
1772 LOG_DEBUG("SWD line reset");
1773 s = swd_seq_line_reset;
1774 s_len = swd_seq_line_reset_len;
1777 LOG_DEBUG("JTAG-to-SWD");
1778 s = swd_seq_jtag_to_swd;
1779 s_len = swd_seq_jtag_to_swd_len;
1782 LOG_DEBUG("SWD-to-JTAG");
1783 s = swd_seq_swd_to_jtag;
1784 s_len = swd_seq_swd_to_jtag_len;
1787 LOG_ERROR("Sequence %d not supported.", seq);
1791 jlink_queue_data_out(s, s_len);
1796 static int jlink_swd_run_queue(struct adiv5_dap *dap)
1801 LOG_DEBUG("Executing %d queued transactions.", pending_scan_results_length);
1803 if (queued_retval != ERROR_OK) {
1804 LOG_DEBUG("Skipping due to previous errors: %d.", queued_retval);
1809 * A transaction must be followed by another transaction or at least 8 idle
1810 * cycles to ensure that data is clocked through the AP.
1812 jlink_queue_data_out(NULL, 8);
1814 ret = jaylink_swd_io(devh, tms_buffer, tdi_buffer, tdo_buffer, tap_length);
1816 if (ret != JAYLINK_OK) {
1817 LOG_ERROR("jaylink_swd_io() failed: %s.", jaylink_strerror_name(ret));
1821 for (i = 0; i < pending_scan_results_length; i++) {
1822 int ack = buf_get_u32(tdo_buffer, pending_scan_results_buffer[i].first, 3);
1824 if (ack != SWD_ACK_OK) {
1825 LOG_DEBUG("SWD ack not OK: %d %s", ack,
1826 ack == SWD_ACK_WAIT ? "WAIT" : ack == SWD_ACK_FAULT ? "FAULT" : "JUNK");
1827 queued_retval = ack == SWD_ACK_WAIT ? ERROR_WAIT : ERROR_FAIL;
1829 } else if (pending_scan_results_buffer[i].length) {
1830 uint32_t data = buf_get_u32(tdo_buffer, 3 + pending_scan_results_buffer[i].first, 32);
1831 int parity = buf_get_u32(tdo_buffer, 3 + 32 + pending_scan_results_buffer[i].first, 1);
1833 if (parity != parity_u32(data)) {
1834 LOG_ERROR("SWD: Read data parity mismatch.");
1835 queued_retval = ERROR_FAIL;
1839 if (pending_scan_results_buffer[i].buffer)
1840 *(uint32_t *)pending_scan_results_buffer[i].buffer = data;
1846 ret = queued_retval;
1847 queued_retval = ERROR_OK;
1852 static void jlink_swd_queue_cmd(struct adiv5_dap *dap, uint8_t cmd,
1853 uint32_t *dst, uint32_t data)
1855 uint8_t data_parity_trn[DIV_ROUND_UP(32 + 1, 8)];
1857 if (tap_length + 46 + 8 + dap->memaccess_tck >= swd_buffer_size * 8 ||
1858 pending_scan_results_length == MAX_PENDING_SCAN_RESULTS) {
1859 /* Not enough room in the queue. Run the queue. */
1860 queued_retval = jlink_swd_run_queue(dap);
1863 if (queued_retval != ERROR_OK)
1866 cmd |= SWD_CMD_START | SWD_CMD_PARK;
1868 jlink_queue_data_out(&cmd, 8);
1870 pending_scan_results_buffer[pending_scan_results_length].first = tap_length;
1872 if (cmd & SWD_CMD_RnW) {
1873 /* Queue a read transaction. */
1874 pending_scan_results_buffer[pending_scan_results_length].length = 32;
1875 pending_scan_results_buffer[pending_scan_results_length].buffer = dst;
1877 jlink_queue_data_in(1 + 3 + 32 + 1 + 1);
1879 /* Queue a write transaction. */
1880 pending_scan_results_buffer[pending_scan_results_length].length = 0;
1881 jlink_queue_data_in(1 + 3 + 1);
1883 buf_set_u32(data_parity_trn, 0, 32, data);
1884 buf_set_u32(data_parity_trn, 32, 1, parity_u32(data));
1886 jlink_queue_data_out(data_parity_trn, 32 + 1);
1889 pending_scan_results_length++;
1891 /* Insert idle cycles after AP accesses to avoid WAIT. */
1892 if (cmd & SWD_CMD_APnDP)
1893 jlink_queue_data_out(NULL, dap->memaccess_tck);
1896 static const struct swd_driver jlink_swd = {
1897 .init = &jlink_swd_init,
1898 .frequency = &jlink_swd_frequency,
1899 .switch_seq = &jlink_swd_switch_seq,
1900 .read_reg = &jlink_swd_read_reg,
1901 .write_reg = &jlink_swd_write_reg,
1902 .run = &jlink_swd_run_queue,
1905 static const char * const jlink_transports[] = { "jtag", "swd", NULL };
1907 struct jtag_interface jlink_interface = {
1909 .commands = jlink_command_handlers,
1910 .transports = jlink_transports,
1912 .execute_queue = &jlink_execute_queue,
1913 .speed = &jlink_speed,
1914 .speed_div = &jlink_speed_div,
1916 .init = &jlink_init,
1917 .quit = &jlink_quit,
1918 .config_trace = &config_trace,
1919 .poll_trace = &poll_trace,