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, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
22 * This file is based on Dominic Rath's amt_jtagaccel.c.
24 * usbprog is a free programming adapter. You can easily install
25 * different firmware versions from an "online pool" over USB.
26 * The adapter can be used for programming and debugging AVR and ARM
27 * processors, as USB to RS232 converter, as JTAG interface or as
28 * simple I/O interface (5 lines).
30 * http://www.embedded-projects.net/usbprog
37 #include "replacements.h"
55 int usbprog_execute_queue(void);
56 int usbprog_speed(int speed
);
57 int usbprog_register_commands(struct command_context_s
*cmd_ctx
);
58 int usbprog_init(void);
59 int usbprog_quit(void);
61 void usbprog_end_state(enum tap_state state
);
62 void usbprog_state_move(void);
63 void usbprog_path_move(pathmove_command_t
*cmd
);
64 void usbprog_runtest(int num_cycles
);
65 void usbprog_scan(int ir_scan
, enum scan_type type
, u8
*buffer
, int scan_size
);
67 jtag_interface_t usbprog_interface
=
70 .execute_queue
= usbprog_execute_queue
,
71 .speed
= usbprog_speed
,
72 .register_commands
= usbprog_register_commands
,
77 #define UNKOWN_COMMAND 0x00
78 #define PORT_DIRECTION 0x01
81 #define PORT_SETBIT 0x04
82 #define PORT_GETBIT 0x05
83 #define WRITE_TDI 0x06
85 #define WRITE_AND_READ 0x08
86 #define WRITE_TMS 0x09
87 #define WRITE_TMS_CHAIN 0x0A
91 struct usb_dev_handle
* usb_handle
;
94 struct usbprog_jtag
* usbprog_jtag_handle
;
96 struct usbprog_jtag
* usbprog_jtag_open();
97 void usbprog_jtag_close(struct usbprog_jtag
*usbprog_jtag
);
98 void usbprog_jtag_init(struct usbprog_jtag
*usbprog_jtag
);
99 unsigned char usbprog_jtag_message(struct usbprog_jtag
*usbprog_jtag
, char *msg
, int msglen
);
101 void usbprog_jtag_read_tdo(struct usbprog_jtag
*usbprog_jtag
, char * buffer
, int size
);
102 void usbprog_jtag_write_tdi(struct usbprog_jtag
*usbprog_jtag
, char * buffer
, int size
);
103 void usbprog_jtag_write_and_read(struct usbprog_jtag
*usbprog_jtag
, char * buffer
, int size
);
104 void usbprog_jtag_write_tms(struct usbprog_jtag
*usbprog_jtag
, char tms_scan
);
108 void usbprog_jtag_tms_collect(char tms_scan
);
109 void usbprog_jtag_tms_send(struct usbprog_jtag
*usbprog_jtag
);
111 void usbprog_write(int tck
, int tms
, int tdi
);
112 void usbprog_reset(int trst
, int srst
);
114 void usbprog_jtag_set_direction(struct usbprog_jtag
*usbprog_jtag
, unsigned char direction
);
115 void usbprog_jtag_write_slice(struct usbprog_jtag
*usbprog_jtag
,unsigned char value
);
116 unsigned char usbprog_jtag_get_port(struct usbprog_jtag
*usbprog_jtag
);
117 void usbprog_jtag_set_bit(struct usbprog_jtag
*usbprog_jtag
,int bit
, int value
);
118 int usbprog_jtag_get_bit(struct usbprog_jtag
*usbprog_jtag
, int bit
);
120 int usbprog_speed(int speed
)
125 int usbprog_register_commands(struct command_context_s
*cmd_ctx
)
130 int usbprog_execute_queue(void)
132 jtag_command_t
*cmd
= jtag_command_queue
; /* currently processed command */
142 #ifdef _DEBUG_JTAG_IO_
143 LOG_DEBUG("end_state: %i", cmd
->cmd
.end_state
->end_state
);
145 if (cmd
->cmd
.end_state
->end_state
!= -1)
146 usbprog_end_state(cmd
->cmd
.end_state
->end_state
);
149 #ifdef _DEBUG_JTAG_IO_
150 LOG_DEBUG("reset trst: %i srst %i", cmd
->cmd
.reset
->trst
, cmd
->cmd
.reset
->srst
);
152 if (cmd
->cmd
.reset
->trst
== 1)
154 cur_state
= TAP_RESET
;
156 usbprog_reset(cmd
->cmd
.reset
->trst
, cmd
->cmd
.reset
->srst
);
159 #ifdef _DEBUG_JTAG_IO_
160 LOG_DEBUG("runtest %i cycles, end in %i", cmd
->cmd
.runtest
->num_cycles
, cmd
->cmd
.runtest
->end_state
);
162 if (cmd
->cmd
.runtest
->end_state
!= -1)
163 usbprog_end_state(cmd
->cmd
.runtest
->end_state
);
164 usbprog_runtest(cmd
->cmd
.runtest
->num_cycles
);
167 #ifdef _DEBUG_JTAG_IO_
168 LOG_DEBUG("statemove end in %i", cmd
->cmd
.statemove
->end_state
);
170 if (cmd
->cmd
.statemove
->end_state
!= -1)
171 usbprog_end_state(cmd
->cmd
.statemove
->end_state
);
172 usbprog_state_move();
175 #ifdef _DEBUG_JTAG_IO_
176 LOG_DEBUG("pathmove: %i states, end in %i", cmd
->cmd
.pathmove
->num_states
,
177 cmd
->cmd
.pathmove
->path
[cmd
->cmd
.pathmove
->num_states
- 1]);
179 usbprog_path_move(cmd
->cmd
.pathmove
);
182 #ifdef _DEBUG_JTAG_IO_
183 LOG_DEBUG("scan end in %i", cmd
->cmd
.scan
->end_state
);
185 if (cmd
->cmd
.scan
->end_state
!= -1)
186 usbprog_end_state(cmd
->cmd
.scan
->end_state
);
187 scan_size
= jtag_build_buffer(cmd
->cmd
.scan
, &buffer
);
188 type
= jtag_scan_type(cmd
->cmd
.scan
);
189 usbprog_scan(cmd
->cmd
.scan
->ir_scan
, type
, buffer
, scan_size
);
190 if (jtag_read_buffer(buffer
, cmd
->cmd
.scan
) != ERROR_OK
)
191 return ERROR_JTAG_QUEUE_FAILED
;
196 #ifdef _DEBUG_JTAG_IO_
197 LOG_DEBUG("sleep %i", cmd
->cmd
.sleep
->us
);
199 jtag_sleep(cmd
->cmd
.sleep
->us
);
202 LOG_ERROR("BUG: unknown JTAG command type encountered");
212 int usbprog_init(void)
214 usbprog_jtag_handle
= usbprog_jtag_open();
217 if (usbprog_jtag_handle
== 0)
219 LOG_ERROR("Can't find USB JTAG Interface! Please check connection and permissions.");
220 return ERROR_JTAG_INIT_FAILED
;
223 LOG_INFO("USB JTAG Interface ready!");
225 usbprog_jtag_init(usbprog_jtag_handle
);
227 usbprog_write(0, 0, 0);
232 int usbprog_quit(void)
237 /*************** jtag execute commands **********************/
238 void usbprog_end_state(enum tap_state state
)
240 if (tap_move_map
[state
] != -1)
244 LOG_ERROR("BUG: %i is not a valid end state", state
);
249 void usbprog_state_move(void)
252 u8 tms_scan
= TAP_MOVE(cur_state
, end_state
);
254 usbprog_jtag_write_tms(usbprog_jtag_handle
, (char)tms_scan
);
255 for (i
= 0; i
< 7; i
++)
257 tms
= (tms_scan
>> i
) & 1;
260 cur_state
= end_state
;
263 void usbprog_path_move(pathmove_command_t
*cmd
)
265 int num_states
= cmd
->num_states
;
271 if (tap_transitions
[cur_state
].low
== cmd
->path
[state_count
])
274 usbprog_write(0, 0, 0);
275 usbprog_write(1, 0, 0);
277 else if (tap_transitions
[cur_state
].high
== cmd
->path
[state_count
])
280 usbprog_write(0, 1, 0);
281 usbprog_write(1, 1, 0);
285 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings
[cur_state
], tap_state_strings
[cmd
->path
[state_count
]]);
289 cur_state
= cmd
->path
[state_count
];
294 end_state
= cur_state
;
297 void usbprog_runtest(int num_cycles
)
301 /* only do a state_move when we're not already in RTI */
302 if (cur_state
!= TAP_IDLE
)
304 usbprog_end_state(TAP_IDLE
);
305 usbprog_state_move();
308 /* execute num_cycles */
311 usbprog_jtag_tms_send(usbprog_jtag_handle
);
312 usbprog_write(0, 0, 0);
316 usbprog_jtag_tms_send(usbprog_jtag_handle
);
317 /* LOG_INFO("NUM CYCLES %i",num_cycles); */
320 for (i
= 0; i
< num_cycles
; i
++)
322 usbprog_write(1, 0, 0);
323 usbprog_write(0, 0, 0);
326 /* finish in end_state */
328 usbprog_end_state(saved_end_state);
329 if (cur_state != end_state)
330 usbprog_state_move();
334 void usbprog_scan(int ir_scan
, enum scan_type type
, u8
*buffer
, int scan_size
)
336 enum tap_state saved_end_state
= end_state
;
339 usbprog_end_state(TAP_IRSHIFT
);
341 usbprog_end_state(TAP_DRSHIFT
);
343 /* usbprog_jtag_tms_send(usbprog_jtag_handle); */
345 usbprog_state_move();
346 usbprog_end_state(saved_end_state
);
348 usbprog_jtag_tms_send(usbprog_jtag_handle
);
350 if (type
== SCAN_OUT
)
352 usbprog_jtag_write_tdi(usbprog_jtag_handle
,buffer
, scan_size
);
356 usbprog_jtag_read_tdo(usbprog_jtag_handle
,buffer
, scan_size
);
360 usbprog_jtag_write_and_read(usbprog_jtag_handle
,buffer
, scan_size
);
364 cur_state
= TAP_IRPAUSE
;
366 cur_state
= TAP_DRPAUSE
;
368 if (cur_state
!= end_state
)
369 usbprog_state_move();
372 /*************** jtag wrapper functions *********************/
374 void usbprog_write(int tck
, int tms
, int tdi
)
376 unsigned char output_value
=0x00;
379 output_value
|= (1<<TMS_BIT
);
381 output_value
|= (1<<TDI_BIT
);
383 output_value
|= (1<<TCK_BIT
);
385 usbprog_jtag_write_slice(usbprog_jtag_handle
,output_value
);
388 /* (1) assert or (0) deassert reset lines */
389 void usbprog_reset(int trst
, int srst
)
391 LOG_DEBUG("trst: %i, srst: %i", trst
, srst
);
394 usbprog_jtag_set_bit(usbprog_jtag_handle
, 5, 0);
396 usbprog_jtag_set_bit(usbprog_jtag_handle
, 5, 1);
399 usbprog_jtag_set_bit(usbprog_jtag_handle
, 4, 0);
401 usbprog_jtag_set_bit(usbprog_jtag_handle
, 4, 1);
404 /*************** jtag lowlevel functions ********************/
406 struct usb_bus
*busses
;
408 struct usbprog_jtag
* usbprog_jtag_open()
411 struct usb_device
*dev
;
413 struct usbprog_jtag
*tmp
;
415 tmp
= (struct usbprog_jtag
*)malloc(sizeof(struct usbprog_jtag
));
422 busses
= usb_get_busses();
424 /* find usbprog_jtag device in usb bus */
426 for (bus
= busses
; bus
; bus
= bus
->next
)
428 for (dev
= bus
->devices
; dev
; dev
= dev
->next
)
430 /* condition for sucessfully hit (too bad, I only check the vendor id)*/
431 if (dev
->descriptor
.idVendor
== VID
&& dev
->descriptor
.idProduct
== PID
)
433 tmp
->usb_handle
= usb_open(dev
);
434 usb_set_configuration(tmp
->usb_handle
, 1);
435 usb_claim_interface(tmp
->usb_handle
, 0);
436 usb_set_altinterface(tmp
->usb_handle
, 0);
444 void usbprog_jtag_close(struct usbprog_jtag
*usbprog_jtag
)
446 usb_close(usbprog_jtag
->usb_handle
);
450 unsigned char usbprog_jtag_message(struct usbprog_jtag
*usbprog_jtag
, char *msg
, int msglen
)
452 int res
= usb_bulk_write(usbprog_jtag
->usb_handle
, 3, msg
,msglen
, 100);
453 if ((msg
[0] == 2) || (msg
[0] == 1) || (msg
[0] == 4) || (msg
[0] == 0) || \
454 (msg
[0] == 6) || (msg
[0] == 0x0A) || (msg
[0] == 9))
458 /* LOG_INFO("HALLLLOOO %i",(int)msg[0]); */
459 res
= usb_bulk_read(usbprog_jtag
->usb_handle
, 0x82, msg
, 2, 100);
461 return (unsigned char)msg
[1];
470 void usbprog_jtag_init(struct usbprog_jtag
*usbprog_jtag
)
472 usbprog_jtag_set_direction(usbprog_jtag
, 0xFE);
475 void usbprog_jtag_write_and_read(struct usbprog_jtag
*usbprog_jtag
, char * buffer
, int size
)
477 char tmp
[64]; /* fastes packet size for usb controller */
478 int send_bits
, bufindex
= 0, fillindex
= 0, i
, loops
;
481 /* 61 byte can be transfered (488 bit) */
498 tmp
[0] = WRITE_AND_READ
;
499 tmp
[1] = (char)(send_bits
>> 8); /* high */
500 tmp
[2] = (char)(send_bits
); /* low */
503 for (i
= 0; i
< loops
; i
++)
505 tmp
[3 + i
] = buffer
[bufindex
];
509 if (usb_bulk_write(usbprog_jtag
->usb_handle
, 3, tmp
, 64, 1000) == 64)
511 /* LOG_INFO("HALLLLOOO2 %i",(int)tmp[0]); */
514 while (usb_bulk_read(usbprog_jtag
->usb_handle
, 0x82, tmp
, 64, 1000) < 1)
521 for (i
= 0; i
< loops
; i
++)
524 buffer
[fillindex
++] = swap
;
530 void usbprog_jtag_read_tdo(struct usbprog_jtag
*usbprog_jtag
, char * buffer
, int size
)
532 char tmp
[64]; /* fastes packet size for usb controller */
533 int send_bits
, fillindex
= 0, i
, loops
;
536 /* 61 byte can be transfered (488 bit) */
553 tmp
[0] = WRITE_AND_READ
;
554 tmp
[1] = (char)(send_bits
>> 8); /* high */
555 tmp
[2] = (char)(send_bits
); /* low */
557 usb_bulk_write(usbprog_jtag
->usb_handle
, 3, tmp
, 3, 1000);
559 /* LOG_INFO("HALLLLOOO3 %i",(int)tmp[0]); */
562 while (usb_bulk_read(usbprog_jtag
->usb_handle
, 0x82, tmp
, 64, 10) < 1)
569 for (i
= 0; i
< loops
; i
++)
572 buffer
[fillindex
++] = swap
;
577 void usbprog_jtag_write_tdi(struct usbprog_jtag
*usbprog_jtag
, char * buffer
, int size
)
579 char tmp
[64]; /* fastes packet size for usb controller */
580 int send_bits
, bufindex
= 0, i
, loops
;
582 /* 61 byte can be transfered (488 bit) */
600 tmp
[1] = (char)(send_bits
>> 8); /* high */
601 tmp
[2] = (char)(send_bits
); /* low */
604 for (i
= 0; i
< loops
; i
++)
606 tmp
[3 + i
] = buffer
[bufindex
];
609 usb_bulk_write(usbprog_jtag
->usb_handle
, 3, tmp
, 64, 1000);
613 void usbprog_jtag_write_tms(struct usbprog_jtag
*usbprog_jtag
, char tms_scan
)
615 usbprog_jtag_tms_collect(tms_scan
);
618 void usbprog_jtag_set_direction(struct usbprog_jtag
*usbprog_jtag
, unsigned char direction
)
621 tmp
[0] = PORT_DIRECTION
;
622 tmp
[1] = (char)direction
;
623 usbprog_jtag_message(usbprog_jtag
, tmp
, 2);
626 void usbprog_jtag_write_slice(struct usbprog_jtag
*usbprog_jtag
,unsigned char value
)
630 tmp
[1] = (char)value
;
631 usbprog_jtag_message(usbprog_jtag
, tmp
, 2);
634 unsigned char usbprog_jtag_get_port(struct usbprog_jtag
*usbprog_jtag
)
639 return usbprog_jtag_message(usbprog_jtag
, tmp
, 2);
642 void usbprog_jtag_set_bit(struct usbprog_jtag
*usbprog_jtag
,int bit
, int value
)
645 tmp
[0] = PORT_SETBIT
;
651 usbprog_jtag_message(usbprog_jtag
, tmp
, 3);
654 int usbprog_jtag_get_bit(struct usbprog_jtag
*usbprog_jtag
, int bit
)
657 tmp
[0] = PORT_GETBIT
;
660 if (usbprog_jtag_message(usbprog_jtag
, tmp
, 2) > 0)
666 void usbprog_jtag_tms_collect(char tms_scan
)
668 tms_chain
[tms_chain_index
] = tms_scan
;
672 void usbprog_jtag_tms_send(struct usbprog_jtag
*usbprog_jtag
)
675 /* LOG_INFO("TMS SEND"); */
676 if (tms_chain_index
> 0)
678 char tmp
[tms_chain_index
+ 2];
679 tmp
[0] = WRITE_TMS_CHAIN
;
680 tmp
[1] = (char)(tms_chain_index
);
681 for (i
= 0; i
< tms_chain_index
+ 1; i
++)
682 tmp
[2 + i
] = tms_chain
[i
];
683 usb_bulk_write(usbprog_jtag
->usb_handle
, 3, tmp
, tms_chain_index
+ 2, 1000);
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