1 /***************************************************************************
2 * Copyright (C) 2007 by Benedikt Sauter *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
17 ***************************************************************************/
20 * This file is based on Dominic Rath's amt_jtagaccel.c.
22 * usbprog is a free programming adapter. You can easily install
23 * different firmware versions from an "online pool" over USB.
24 * The adapter can be used for programming and debugging AVR and ARM
25 * processors, as USB to RS232 converter, as JTAG interface or as
26 * simple I/O interface (5 lines).
28 * http://www.embedded-projects.net/usbprog
35 #include <jtag/interface.h>
36 #include <jtag/commands.h>
37 #include "usb_common.h"
48 static void usbprog_end_state(tap_state_t state
);
49 static void usbprog_state_move(void);
50 static void usbprog_path_move(struct pathmove_command
*cmd
);
51 static void usbprog_runtest(int num_cycles
);
52 static void usbprog_scan(bool ir_scan
, enum scan_type type
, uint8_t *buffer
, int scan_size
);
54 #define UNKNOWN_COMMAND 0x00
55 #define PORT_DIRECTION 0x01
58 #define PORT_SETBIT 0x04
59 #define PORT_GETBIT 0x05
60 #define WRITE_TDI 0x06
62 #define WRITE_AND_READ 0x08
63 #define WRITE_TMS 0x09
64 #define WRITE_TMS_CHAIN 0x0A
67 struct usb_dev_handle
*usb_handle
;
70 static struct usbprog_jtag
*usbprog_jtag_handle
;
72 static struct usbprog_jtag
*usbprog_jtag_open(void);
73 /* static void usbprog_jtag_close(struct usbprog_jtag *usbprog_jtag); */
74 static void usbprog_jtag_init(struct usbprog_jtag
*usbprog_jtag
);
75 static unsigned char usbprog_jtag_message(struct usbprog_jtag
*usbprog_jtag
, char *msg
, int msglen
);
77 static void usbprog_jtag_read_tdo(struct usbprog_jtag
*usbprog_jtag
, char *buffer
, int size
);
78 static void usbprog_jtag_write_tdi(struct usbprog_jtag
*usbprog_jtag
, char *buffer
, int size
);
79 static void usbprog_jtag_write_and_read(struct usbprog_jtag
*usbprog_jtag
, char *buffer
, int size
);
80 static void usbprog_jtag_write_tms(struct usbprog_jtag
*usbprog_jtag
, char tms_scan
);
82 static char tms_chain
[64];
83 static int tms_chain_index
;
85 static void usbprog_jtag_tms_collect(char tms_scan
);
86 static void usbprog_jtag_tms_send(struct usbprog_jtag
*usbprog_jtag
);
88 static void usbprog_write(int tck
, int tms
, int tdi
);
89 static void usbprog_reset(int trst
, int srst
);
91 static void usbprog_jtag_set_direction(struct usbprog_jtag
*usbprog_jtag
, unsigned char direction
);
92 static void usbprog_jtag_write_slice(struct usbprog_jtag
*usbprog_jtag
, unsigned char value
);
93 /* static unsigned char usbprog_jtag_get_port(struct usbprog_jtag *usbprog_jtag); */
94 static void usbprog_jtag_set_bit(struct usbprog_jtag
*usbprog_jtag
, int bit
, int value
);
95 /* static int usbprog_jtag_get_bit(struct usbprog_jtag *usbprog_jtag, int bit); */
97 static int usbprog_execute_queue(void)
99 struct jtag_command
*cmd
= jtag_command_queue
; /* currently processed command */
107 LOG_DEBUG_IO("reset trst: %i srst %i",
108 cmd
->cmd
.reset
->trst
,
109 cmd
->cmd
.reset
->srst
);
110 if (cmd
->cmd
.reset
->trst
== 1)
111 tap_set_state(TAP_RESET
);
112 usbprog_reset(cmd
->cmd
.reset
->trst
, cmd
->cmd
.reset
->srst
);
115 LOG_DEBUG_IO("runtest %i cycles, end in %i",
116 cmd
->cmd
.runtest
->num_cycles
,
117 cmd
->cmd
.runtest
->end_state
);
118 usbprog_end_state(cmd
->cmd
.runtest
->end_state
);
119 usbprog_runtest(cmd
->cmd
.runtest
->num_cycles
);
122 LOG_DEBUG_IO("statemove end in %i", cmd
->cmd
.statemove
->end_state
);
123 usbprog_end_state(cmd
->cmd
.statemove
->end_state
);
124 usbprog_state_move();
127 LOG_DEBUG_IO("pathmove: %i states, end in %i",
128 cmd
->cmd
.pathmove
->num_states
,
129 cmd
->cmd
.pathmove
->path
[cmd
->cmd
.pathmove
->num_states
- 1]);
130 usbprog_path_move(cmd
->cmd
.pathmove
);
133 LOG_DEBUG_IO("scan end in %i", cmd
->cmd
.scan
->end_state
);
134 usbprog_end_state(cmd
->cmd
.scan
->end_state
);
135 scan_size
= jtag_build_buffer(cmd
->cmd
.scan
, &buffer
);
136 type
= jtag_scan_type(cmd
->cmd
.scan
);
137 usbprog_scan(cmd
->cmd
.scan
->ir_scan
, type
, buffer
, scan_size
);
138 if (jtag_read_buffer(buffer
, cmd
->cmd
.scan
) != ERROR_OK
)
139 return ERROR_JTAG_QUEUE_FAILED
;
143 LOG_DEBUG_IO("sleep %" PRIu32
, cmd
->cmd
.sleep
->us
);
144 jtag_sleep(cmd
->cmd
.sleep
->us
);
147 LOG_ERROR("BUG: unknown JTAG command type encountered");
157 static int usbprog_init(void)
159 usbprog_jtag_handle
= usbprog_jtag_open();
162 if (usbprog_jtag_handle
== 0) {
163 LOG_ERROR("Can't find USB JTAG Interface! Please check connection and permissions.");
164 return ERROR_JTAG_INIT_FAILED
;
167 LOG_INFO("USB JTAG Interface ready!");
169 usbprog_jtag_init(usbprog_jtag_handle
);
171 usbprog_write(0, 0, 0);
176 static int usbprog_quit(void)
181 /*************** jtag execute commands **********************/
182 static void usbprog_end_state(tap_state_t state
)
184 if (tap_is_state_stable(state
))
185 tap_set_end_state(state
);
187 LOG_ERROR("BUG: %i is not a valid end state", state
);
192 static void usbprog_state_move(void)
194 uint8_t tms_scan
= tap_get_tms_path(tap_get_state(), tap_get_end_state());
196 usbprog_jtag_write_tms(usbprog_jtag_handle
, (char)tms_scan
);
198 tap_set_state(tap_get_end_state());
201 static void usbprog_path_move(struct pathmove_command
*cmd
)
203 int num_states
= cmd
->num_states
;
206 /* There may be queued transitions, and before following a specified
207 path, we must flush those queued transitions */
208 usbprog_jtag_tms_send(usbprog_jtag_handle
);
212 if (tap_state_transition(tap_get_state(), false) == cmd
->path
[state_count
]) {
214 usbprog_write(0, 0, 0);
215 usbprog_write(1, 0, 0);
216 } else if (tap_state_transition(tap_get_state(),
217 true) == cmd
->path
[state_count
]) {
219 usbprog_write(0, 1, 0);
220 usbprog_write(1, 1, 0);
222 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition",
223 tap_state_name(tap_get_state()),
224 tap_state_name(cmd
->path
[state_count
]));
228 tap_set_state(cmd
->path
[state_count
]);
233 tap_set_end_state(tap_get_state());
236 static void usbprog_runtest(int num_cycles
)
240 /* only do a state_move when we're not already in IDLE */
241 if (tap_get_state() != TAP_IDLE
) {
242 usbprog_end_state(TAP_IDLE
);
243 usbprog_state_move();
246 /* execute num_cycles */
247 if (num_cycles
> 0) {
248 usbprog_jtag_tms_send(usbprog_jtag_handle
);
249 usbprog_write(0, 0, 0);
251 usbprog_jtag_tms_send(usbprog_jtag_handle
);
252 /* LOG_INFO("NUM CYCLES %i",num_cycles); */
255 for (i
= 0; i
< num_cycles
; i
++) {
256 usbprog_write(1, 0, 0);
257 usbprog_write(0, 0, 0);
260 LOG_DEBUG_IO("runtest: cur_state %s end_state %s", tap_state_name(
261 tap_get_state()), tap_state_name(tap_get_end_state()));
263 /* finish in end_state */
265 usbprog_end_state(saved_end_state);
266 if (tap_get_state() != tap_get_end_state())
267 usbprog_state_move();
271 static void usbprog_scan(bool ir_scan
, enum scan_type type
, uint8_t *buffer
, int scan_size
)
273 tap_state_t saved_end_state
= tap_get_end_state();
276 usbprog_end_state(TAP_IRSHIFT
);
278 usbprog_end_state(TAP_DRSHIFT
);
280 /* Only move if we're not already there */
281 if (tap_get_state() != tap_get_end_state())
282 usbprog_state_move();
284 usbprog_end_state(saved_end_state
);
286 usbprog_jtag_tms_send(usbprog_jtag_handle
);
288 void (*f
)(struct usbprog_jtag
*usbprog_jtag
, char *buffer_local
, int size
);
291 f
= &usbprog_jtag_write_tdi
;
294 f
= &usbprog_jtag_read_tdo
;
297 f
= &usbprog_jtag_write_and_read
;
300 LOG_ERROR("unknown scan type: %i", type
);
303 f(usbprog_jtag_handle
, (char *)buffer
, scan_size
);
305 /* The adapter does the transition to PAUSE internally */
307 tap_set_state(TAP_IRPAUSE
);
309 tap_set_state(TAP_DRPAUSE
);
311 if (tap_get_state() != tap_get_end_state())
312 usbprog_state_move();
315 /*************** jtag wrapper functions *********************/
317 static void usbprog_write(int tck
, int tms
, int tdi
)
319 unsigned char output_value
= 0x00;
322 output_value
|= (1 << TMS_BIT
);
324 output_value
|= (1 << TDI_BIT
);
326 output_value
|= (1 << TCK_BIT
);
328 usbprog_jtag_write_slice(usbprog_jtag_handle
, output_value
);
331 /* (1) assert or (0) deassert reset lines */
332 static void usbprog_reset(int trst
, int srst
)
334 LOG_DEBUG("trst: %i, srst: %i", trst
, srst
);
337 usbprog_jtag_set_bit(usbprog_jtag_handle
, 5, 0);
339 usbprog_jtag_set_bit(usbprog_jtag_handle
, 5, 1);
342 usbprog_jtag_set_bit(usbprog_jtag_handle
, 4, 0);
344 usbprog_jtag_set_bit(usbprog_jtag_handle
, 4, 1);
347 /*************** jtag lowlevel functions ********************/
349 struct usb_bus
*busses
;
351 struct usbprog_jtag
*usbprog_jtag_open(void)
356 const uint16_t vids
[] = { VID
, 0 };
357 const uint16_t pids
[] = { PID
, 0 };
358 struct usb_dev_handle
*dev
;
359 if (jtag_usb_open(vids
, pids
, &dev
) != ERROR_OK
)
362 struct usbprog_jtag
*tmp
= malloc(sizeof(struct usbprog_jtag
));
363 tmp
->usb_handle
= dev
;
365 usb_set_configuration(dev
, 1);
366 usb_claim_interface(dev
, 0);
367 usb_set_altinterface(dev
, 0);
373 static void usbprog_jtag_close(struct usbprog_jtag
*usbprog_jtag
)
375 usb_close(usbprog_jtag
->usb_handle
);
380 static unsigned char usbprog_jtag_message(struct usbprog_jtag
*usbprog_jtag
, char *msg
, int msglen
)
382 int res
= usb_bulk_write(usbprog_jtag
->usb_handle
, 3, msg
, msglen
, 100);
383 if ((msg
[0] == 2) || (msg
[0] == 1) || (msg
[0] == 4) || (msg
[0] == 0) ||
384 (msg
[0] == 6) || (msg
[0] == 0x0A) || (msg
[0] == 9))
387 /* LOG_INFO("HALLLLOOO %i",(int)msg[0]); */
388 res
= usb_bulk_read(usbprog_jtag
->usb_handle
, 0x82, msg
, 2, 100);
390 return (unsigned char)msg
[1];
398 static void usbprog_jtag_init(struct usbprog_jtag
*usbprog_jtag
)
400 usbprog_jtag_set_direction(usbprog_jtag
, 0xFE);
403 static void usbprog_jtag_write_and_read(struct usbprog_jtag
*usbprog_jtag
, char *buffer
, int size
)
405 char tmp
[64]; /* fastest packet size for usb controller */
406 int send_bits
, bufindex
= 0, fillindex
= 0, i
, loops
;
409 /* 61 byte can be transferred (488 bit) */
422 tmp
[0] = WRITE_AND_READ
;
423 tmp
[1] = (char)(send_bits
>> 8); /* high */
424 tmp
[2] = (char)(send_bits
); /* low */
426 for (i
= 0; i
< loops
; i
++) {
427 tmp
[3 + i
] = buffer
[bufindex
];
431 if (usb_bulk_write(usbprog_jtag
->usb_handle
, 3, tmp
, 64, 1000) == 64) {
432 /* LOG_INFO("HALLLLOOO2 %i",(int)tmp[0]); */
435 while (usb_bulk_read(usbprog_jtag
->usb_handle
, 0x82, tmp
, 64, 1000) < 1) {
441 for (i
= 0; i
< loops
; i
++) {
443 buffer
[fillindex
++] = swap
;
449 static void usbprog_jtag_read_tdo(struct usbprog_jtag
*usbprog_jtag
, char *buffer
, int size
)
451 char tmp
[64]; /* fastest packet size for usb controller */
452 int send_bits
, fillindex
= 0, i
, loops
;
455 /* 61 byte can be transferred (488 bit) */
468 tmp
[0] = WRITE_AND_READ
;
469 tmp
[1] = (char)(send_bits
>> 8); /* high */
470 tmp
[2] = (char)(send_bits
); /* low */
472 usb_bulk_write(usbprog_jtag
->usb_handle
, 3, tmp
, 3, 1000);
474 /* LOG_INFO("HALLLLOOO3 %i",(int)tmp[0]); */
477 while (usb_bulk_read(usbprog_jtag
->usb_handle
, 0x82, tmp
, 64, 10) < 1) {
483 for (i
= 0; i
< loops
; i
++) {
485 buffer
[fillindex
++] = swap
;
490 static void usbprog_jtag_write_tdi(struct usbprog_jtag
*usbprog_jtag
, char *buffer
, int size
)
492 char tmp
[64]; /* fastest packet size for usb controller */
493 int send_bits
, bufindex
= 0, i
, loops
;
495 /* 61 byte can be transferred (488 bit) */
504 /* if (loops == 0) */
509 tmp
[1] = (char)(send_bits
>> 8); /* high */
510 tmp
[2] = (char)(send_bits
); /* low */
512 for (i
= 0; i
< loops
; i
++) {
513 tmp
[3 + i
] = buffer
[bufindex
];
516 usb_bulk_write(usbprog_jtag
->usb_handle
, 3, tmp
, 64, 1000);
520 static void usbprog_jtag_write_tms(struct usbprog_jtag
*usbprog_jtag
, char tms_scan
)
522 usbprog_jtag_tms_collect(tms_scan
);
525 static void usbprog_jtag_set_direction(struct usbprog_jtag
*usbprog_jtag
, unsigned char direction
)
528 tmp
[0] = PORT_DIRECTION
;
529 tmp
[1] = (char)direction
;
530 usbprog_jtag_message(usbprog_jtag
, tmp
, 2);
533 static void usbprog_jtag_write_slice(struct usbprog_jtag
*usbprog_jtag
, unsigned char value
)
537 tmp
[1] = (char)value
;
538 usbprog_jtag_message(usbprog_jtag
, tmp
, 2);
542 static unsigned char usbprog_jtag_get_port(struct usbprog_jtag
*usbprog_jtag
)
547 return usbprog_jtag_message(usbprog_jtag
, tmp
, 2);
551 static void usbprog_jtag_set_bit(struct usbprog_jtag
*usbprog_jtag
, int bit
, int value
)
554 tmp
[0] = PORT_SETBIT
;
560 usbprog_jtag_message(usbprog_jtag
, tmp
, 3);
564 static int usbprog_jtag_get_bit(struct usbprog_jtag
*usbprog_jtag
, int bit
)
567 tmp
[0] = PORT_GETBIT
;
570 if (usbprog_jtag_message(usbprog_jtag
, tmp
, 2) > 0)
577 static void usbprog_jtag_tms_collect(char tms_scan
)
579 tms_chain
[tms_chain_index
] = tms_scan
;
583 static void usbprog_jtag_tms_send(struct usbprog_jtag
*usbprog_jtag
)
586 /* LOG_INFO("TMS SEND"); */
587 if (tms_chain_index
> 0) {
588 char tmp
[tms_chain_index
+ 2];
589 tmp
[0] = WRITE_TMS_CHAIN
;
590 tmp
[1] = (char)(tms_chain_index
);
591 for (i
= 0; i
< tms_chain_index
+ 1; i
++)
592 tmp
[2 + i
] = tms_chain
[i
];
593 usb_bulk_write(usbprog_jtag
->usb_handle
, 3, tmp
, tms_chain_index
+ 2, 1000);
598 static struct jtag_interface usbprog_interface
= {
599 .execute_queue
= usbprog_execute_queue
,
602 struct adapter_driver usbprog_adapter_driver
= {
604 .transports
= jtag_only
,
606 .init
= usbprog_init
,
607 .quit
= usbprog_quit
,
609 .jtag_ops
= &usbprog_interface
,
Linking to existing account procedure
If you already have an account and want to add another login method
you
MUST first sign in with your existing account and
then change URL to read
https://review.openocd.org/login/?link
to get to this page again but this time it'll work for linking. Thank you.
SSH host keys fingerprints
1024 SHA256:YKx8b7u5ZWdcbp7/4AeXNaqElP49m6QrwfXaqQGJAOk gerrit-code-review@openocd.zylin.com (DSA)
384 SHA256:jHIbSQa4REvwCFG4cq5LBlBLxmxSqelQPem/EXIrxjk gerrit-code-review@openocd.org (ECDSA)
521 SHA256:UAOPYkU9Fjtcao0Ul/Rrlnj/OsQvt+pgdYSZ4jOYdgs gerrit-code-review@openocd.org (ECDSA)
256 SHA256:A13M5QlnozFOvTllybRZH6vm7iSt0XLxbA48yfc2yfY gerrit-code-review@openocd.org (ECDSA)
256 SHA256:spYMBqEYoAOtK7yZBrcwE8ZpYt6b68Cfh9yEVetvbXg gerrit-code-review@openocd.org (ED25519)
+--[ED25519 256]--+
|=.. |
|+o.. . |
|*.o . . |
|+B . . . |
|Bo. = o S |
|Oo.+ + = |
|oB=.* = . o |
| =+=.+ + E |
|. .=o . o |
+----[SHA256]-----+
2048 SHA256:0Onrb7/PHjpo6iVZ7xQX2riKN83FJ3KGU0TvI0TaFG4 gerrit-code-review@openocd.zylin.com (RSA)