1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
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 ***************************************************************************/
24 #include "replacements.h"
37 #if PARPORT_USE_PPDEV == 1
38 #include <linux/parport.h>
39 #include <linux/ppdev.h>
41 #include <sys/ioctl.h>
43 #else /* not PARPORT_USE_PPDEV */
49 #if PARPORT_USE_GIVEIO == 1
59 u16 amt_jtagaccel_port
;
61 /* interface variables
63 static u8 aw_control_rst
= 0x00;
64 static u8 aw_control_fsm
= 0x10;
65 static u8 aw_control_baudrate
= 0x20;
67 static int rtck_enabled
= 0;
69 #if PARPORT_USE_PPDEV == 1
70 static int device_handle
;
71 int addr_mode
= IEEE1284_MODE_EPP
| IEEE1284_ADDR
;
72 int data_mode
= IEEE1284_MODE_EPP
| IEEE1284_DATA
;
73 #define AMT_AW(val) do { ioctl(device_handle, PPSETMODE, &addr_mode); write(device_handle, &val, 1); } while (0)
74 #define AMT_AR(val) do { ioctl(device_handle, PPSETMODE, &addr_mode); read(device_handle, &val, 1); } while (0)
75 #define AMT_DW(val) do { ioctl(device_handle, PPSETMODE, &data_mode); write(device_handle, &val, 1); } while (0)
76 #define AMT_DR(val) do { ioctl(device_handle, PPSETMODE, &data_mode); read(device_handle, &val, 1); } while (0)
78 #define AMT_AW(val) do { outb(val, amt_jtagaccel_port + 3); } while (0)
79 #define AMT_AR(val) do { val = inb(amt_jtagaccel_port + 3); } while (0)
80 #define AMT_DW(val) do { outb(val, amt_jtagaccel_port + 4); } while (0)
81 #define AMT_DR(val) do { val = inb(amt_jtagaccel_port + 4); } while (0)
84 int amt_jtagaccel_execute_queue(void);
85 int amt_jtagaccel_register_commands(struct command_context_s
*cmd_ctx
);
86 int amt_jtagaccel_speed(int speed
);
87 int amt_jtagaccel_init(void);
88 int amt_jtagaccel_quit(void);
90 int amt_jtagaccel_handle_parport_port_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
91 int amt_jtagaccel_handle_rtck_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
93 /* tap_move[i][j]: tap movement command to go from state i to state j
101 u8 amt_jtagaccel_tap_move
[6][6][2] =
103 /* TLR RTI SD PD SI PI */
104 {{0x1f, 0x00}, {0x0f, 0x00}, {0x8a, 0x04}, {0x0a, 0x00}, {0x06, 0x00}, {0x96, 0x00}}, /* TLR */
105 {{0x1f, 0x00}, {0x00, 0x00}, {0x85, 0x08}, {0x05, 0x00}, {0x8b, 0x08}, {0x0b, 0x00}}, /* RTI */
106 {{0x1f, 0x00}, {0x0d, 0x00}, {0x00, 0x00}, {0x01, 0x00}, {0x8f, 0x09}, {0x8f, 0x01}}, /* SD */
107 {{0x1f, 0x00}, {0x0c, 0x00}, {0x08, 0x00}, {0x00, 0x00}, {0x8f, 0x09}, {0x8f, 0x01}}, /* PD */
108 {{0x1f, 0x00}, {0x0d, 0x00}, {0x07, 0x00}, {0x97, 0x00}, {0x00, 0x00}, {0x01, 0x00}}, /* SI */
109 {{0x1f, 0x00}, {0x0c, 0x00}, {0x07, 0x00}, {0x97, 0x00}, {0x08, 0x00}, {0x00, 0x00}}, /* PI */
112 jtag_interface_t amt_jtagaccel_interface
=
114 .name
= "amt_jtagaccel",
116 .execute_queue
= amt_jtagaccel_execute_queue
,
118 .speed
= amt_jtagaccel_speed
,
119 .register_commands
= amt_jtagaccel_register_commands
,
120 .init
= amt_jtagaccel_init
,
121 .quit
= amt_jtagaccel_quit
,
124 int amt_jtagaccel_register_commands(struct command_context_s
*cmd_ctx
)
126 register_command(cmd_ctx
, NULL
, "parport_port", amt_jtagaccel_handle_parport_port_command
,
127 COMMAND_CONFIG
, NULL
);
128 register_command(cmd_ctx
, NULL
, "rtck", amt_jtagaccel_handle_rtck_command
,
129 COMMAND_CONFIG
, NULL
);
134 void amt_jtagaccel_reset(int trst
, int srst
)
137 aw_control_rst
|= 0x4;
139 aw_control_rst
&= ~0x4;
142 aw_control_rst
|= 0x1;
144 aw_control_rst
&= ~0x1;
146 AMT_AW(aw_control_rst
);
149 int amt_jtagaccel_speed(int speed
)
151 aw_control_baudrate
&= 0xf0;
152 aw_control_baudrate
|= speed
& 0x0f;
153 AMT_AW(aw_control_baudrate
);
158 void amt_jtagaccel_end_state(int state
)
160 if (tap_move_map
[state
] != -1)
164 LOG_ERROR("BUG: %i is not a valid end state", state
);
169 void amt_wait_scan_busy(void)
175 while (((ar_status
) & 0x80) && (timeout
-- > 0))
178 if (ar_status
& 0x80)
180 LOG_ERROR("amt_jtagaccel timed out while waiting for end of scan, rtck was %s, last AR_STATUS: 0x%2.2x", (rtck_enabled
) ? "enabled" : "disabled", ar_status
);
185 void amt_jtagaccel_state_move(void)
190 tms_scan
[0] = amt_jtagaccel_tap_move
[tap_move_map
[cur_state
]][tap_move_map
[end_state
]][0];
191 tms_scan
[1] = amt_jtagaccel_tap_move
[tap_move_map
[cur_state
]][tap_move_map
[end_state
]][1];
193 aw_scan_tms_5
= 0x40 | (tms_scan
[0] & 0x1f);
194 AMT_AW(aw_scan_tms_5
);
195 if (jtag_speed
> 3 || rtck_enabled
)
196 amt_wait_scan_busy();
198 if (tms_scan
[0] & 0x80)
200 aw_scan_tms_5
= 0x40 | (tms_scan
[1] & 0x1f);
201 AMT_AW(aw_scan_tms_5
);
202 if (jtag_speed
> 3 || rtck_enabled
)
203 amt_wait_scan_busy();
206 cur_state
= end_state
;
209 void amt_jtagaccel_runtest(int num_cycles
)
215 enum tap_state saved_end_state
= end_state
;
217 /* only do a state_move when we're not already in RTI */
218 if (cur_state
!= TAP_IDLE
)
220 amt_jtagaccel_end_state(TAP_IDLE
);
221 amt_jtagaccel_state_move();
224 while (num_cycles
- i
>= 5)
226 aw_scan_tms_5
= 0x40;
227 AMT_AW(aw_scan_tms_5
);
231 if (num_cycles
- i
> 0)
233 aw_scan_tms_1to4
= 0x80 | ((num_cycles
- i
- 1) & 0x3) << 4;
234 AMT_AW(aw_scan_tms_1to4
);
237 amt_jtagaccel_end_state(saved_end_state
);
238 if (cur_state
!= end_state
)
239 amt_jtagaccel_state_move();
242 void amt_jtagaccel_scan(int ir_scan
, enum scan_type type
, u8
*buffer
, int scan_size
)
244 int bits_left
= scan_size
;
246 enum tap_state saved_end_state
= end_state
;
254 amt_jtagaccel_end_state(TAP_IRSHIFT
);
256 amt_jtagaccel_end_state(TAP_DRSHIFT
);
258 amt_jtagaccel_state_move();
259 amt_jtagaccel_end_state(saved_end_state
);
261 /* handle unaligned bits at the beginning */
262 if ((scan_size
- 1) % 8)
264 aw_tdi_option
= 0x30 | (((scan_size
- 1) % 8) - 1);
265 AMT_AW(aw_tdi_option
);
267 dw_tdi_scan
= buf_get_u32(buffer
, bit_count
, (scan_size
- 1) % 8) & 0xff;
269 if (jtag_speed
> 3 || rtck_enabled
)
270 amt_wait_scan_busy();
272 if ((type
== SCAN_IN
) || (type
== SCAN_IO
))
275 dr_tdo
= dr_tdo
>> (8 - ((scan_size
- 1) % 8));
276 buf_set_u32(buffer
, bit_count
, (scan_size
- 1) % 8, dr_tdo
);
279 bit_count
+= (scan_size
- 1) % 8;
280 bits_left
-= (scan_size
- 1) % 8;
283 while (bits_left
- 1 >= 8)
285 dw_tdi_scan
= buf_get_u32(buffer
, bit_count
, 8) & 0xff;
287 if (jtag_speed
> 3 || rtck_enabled
)
288 amt_wait_scan_busy();
290 if ((type
== SCAN_IN
) || (type
== SCAN_IO
))
293 buf_set_u32(buffer
, bit_count
, 8, dr_tdo
);
300 tms_scan
[0] = amt_jtagaccel_tap_move
[tap_move_map
[cur_state
]][tap_move_map
[end_state
]][0];
301 tms_scan
[1] = amt_jtagaccel_tap_move
[tap_move_map
[cur_state
]][tap_move_map
[end_state
]][1];
302 aw_tms_scan
= 0x40 | (tms_scan
[0] & 0x1f) | (buf_get_u32(buffer
, bit_count
, 1) << 5);
304 if (jtag_speed
> 3 || rtck_enabled
)
305 amt_wait_scan_busy();
307 if ((type
== SCAN_IN
) || (type
== SCAN_IO
))
310 dr_tdo
= dr_tdo
>> 7;
311 buf_set_u32(buffer
, bit_count
, 1, dr_tdo
);
314 if (tms_scan
[0] & 0x80)
316 aw_tms_scan
= 0x40 | (tms_scan
[1] & 0x1f);
318 if (jtag_speed
> 3 || rtck_enabled
)
319 amt_wait_scan_busy();
321 cur_state
= end_state
;
324 int amt_jtagaccel_execute_queue(void)
326 jtag_command_t
*cmd
= jtag_command_queue
; /* currently processed command */
332 /* return ERROR_OK, unless a jtag_read_buffer returns a failed check
333 * that wasn't handled by a caller-provided error handler
342 #ifdef _DEBUG_JTAG_IO_
343 LOG_DEBUG("end_state: %i", cmd
->cmd
.end_state
->end_state
);
345 if (cmd
->cmd
.end_state
->end_state
!= -1)
346 amt_jtagaccel_end_state(cmd
->cmd
.end_state
->end_state
);
349 #ifdef _DEBUG_JTAG_IO_
350 LOG_DEBUG("reset trst: %i srst %i", cmd
->cmd
.reset
->trst
, cmd
->cmd
.reset
->srst
);
352 if (cmd
->cmd
.reset
->trst
== 1)
354 cur_state
= TAP_RESET
;
356 amt_jtagaccel_reset(cmd
->cmd
.reset
->trst
, cmd
->cmd
.reset
->srst
);
359 #ifdef _DEBUG_JTAG_IO_
360 LOG_DEBUG("runtest %i cycles, end in %i", cmd
->cmd
.runtest
->num_cycles
, cmd
->cmd
.runtest
->end_state
);
362 if (cmd
->cmd
.runtest
->end_state
!= -1)
363 amt_jtagaccel_end_state(cmd
->cmd
.runtest
->end_state
);
364 amt_jtagaccel_runtest(cmd
->cmd
.runtest
->num_cycles
);
367 #ifdef _DEBUG_JTAG_IO_
368 LOG_DEBUG("statemove end in %i", cmd
->cmd
.statemove
->end_state
);
370 if (cmd
->cmd
.statemove
->end_state
!= -1)
371 amt_jtagaccel_end_state(cmd
->cmd
.statemove
->end_state
);
372 amt_jtagaccel_state_move();
375 #ifdef _DEBUG_JTAG_IO_
376 LOG_DEBUG("scan end in %i", cmd
->cmd
.scan
->end_state
);
378 if (cmd
->cmd
.scan
->end_state
!= -1)
379 amt_jtagaccel_end_state(cmd
->cmd
.scan
->end_state
);
380 scan_size
= jtag_build_buffer(cmd
->cmd
.scan
, &buffer
);
381 type
= jtag_scan_type(cmd
->cmd
.scan
);
382 amt_jtagaccel_scan(cmd
->cmd
.scan
->ir_scan
, type
, buffer
, scan_size
);
383 if (jtag_read_buffer(buffer
, cmd
->cmd
.scan
) != ERROR_OK
)
384 retval
= ERROR_JTAG_QUEUE_FAILED
;
389 #ifdef _DEBUG_JTAG_IO_
390 LOG_DEBUG("sleep %i", cmd
->cmd
.sleep
->us
);
392 jtag_sleep(cmd
->cmd
.sleep
->us
);
395 LOG_ERROR("BUG: unknown JTAG command type encountered");
404 #if PARPORT_USE_GIVEIO == 1
405 int amt_jtagaccel_get_giveio_access(void)
408 OSVERSIONINFO version
;
410 version
.dwOSVersionInfoSize
= sizeof version
;
411 if (!GetVersionEx( &version
)) {
415 if (version
.dwPlatformId
!= VER_PLATFORM_WIN32_NT
)
418 h
= CreateFile( "\\\\.\\giveio", GENERIC_READ
, 0, NULL
, OPEN_EXISTING
, FILE_ATTRIBUTE_NORMAL
, NULL
);
419 if (h
== INVALID_HANDLE_VALUE
) {
430 int amt_jtagaccel_init(void)
432 #if PARPORT_USE_PPDEV == 1
441 #if PARPORT_USE_PPDEV == 1
442 if (device_handle
> 0)
444 LOG_ERROR("device is already opened");
445 return ERROR_JTAG_INIT_FAILED
;
448 snprintf(buffer
, 256, "/dev/parport%d", amt_jtagaccel_port
);
449 device_handle
= open(buffer
, O_RDWR
);
451 if (device_handle
< 0)
453 LOG_ERROR("cannot open device. check it exists and that user read and write rights are set");
454 return ERROR_JTAG_INIT_FAILED
;
457 i
= ioctl(device_handle
, PPCLAIM
);
460 LOG_ERROR("cannot claim device");
461 return ERROR_JTAG_INIT_FAILED
;
464 i
= IEEE1284_MODE_EPP
;
465 i
= ioctl(device_handle
, PPSETMODE
, & i
);
468 LOG_ERROR(" cannot set compatible mode to device");
469 return ERROR_JTAG_INIT_FAILED
;
473 i
= ioctl(device_handle
, PPWCONTROL
, &control_port
);
476 i
= ioctl(device_handle
, PPWCONTROL
, &control_port
);
479 if (amt_jtagaccel_port
== 0)
481 amt_jtagaccel_port
= 0x378;
482 LOG_WARNING("No parport port specified, using default '0x378' (LPT1)");
485 #if PARPORT_USE_GIVEIO == 1
486 if (amt_jtagaccel_get_giveio_access() != 0) {
487 #else /* PARPORT_USE_GIVEIO */
488 if (ioperm(amt_jtagaccel_port
, 5, 1) != 0) {
489 #endif /* PARPORT_USE_GIVEIO */
490 LOG_ERROR("missing privileges for direct i/o");
491 return ERROR_JTAG_INIT_FAILED
;
494 /* prepare epp port */
496 status_port
= inb(amt_jtagaccel_port
+ 1);
497 outb(status_port
| 0x1, amt_jtagaccel_port
+ 1);
500 outb(0x00, amt_jtagaccel_port
+ 2);
501 outb(0x04, amt_jtagaccel_port
+ 2);
506 /* set RTCK enable bit */
507 aw_control_fsm
|= 0x02;
510 /* enable JTAG port */
511 aw_control_fsm
|= 0x04;
512 AMT_AW(aw_control_fsm
);
514 amt_jtagaccel_speed(jtag_speed
);
516 if (jtag_reset_config
& RESET_TRST_OPEN_DRAIN
)
517 aw_control_rst
&= ~0x8;
519 aw_control_rst
|= 0x8;
521 if (jtag_reset_config
& RESET_SRST_PUSH_PULL
)
522 aw_control_rst
&= ~0x2;
524 aw_control_rst
|= 0x2;
526 amt_jtagaccel_reset(0, 0);
528 /* read status register */
530 LOG_DEBUG("AR_STATUS: 0x%2.2x", ar_status
);
535 int amt_jtagaccel_quit(void)
541 int amt_jtagaccel_handle_parport_port_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
546 /* only if the port wasn't overwritten by cmdline */
547 if (amt_jtagaccel_port
== 0)
548 amt_jtagaccel_port
= strtoul(args
[0], NULL
, 0);
553 int amt_jtagaccel_handle_rtck_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
557 command_print(cmd_ctx
, "amt_jtagaccel RTCK feature %s", (rtck_enabled
) ? "enabled" : "disabled");
562 if (strcmp(args
[0], "enabled") == 0)