1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2008 by Spencer Oliver *
6 * spen@spen-soft.co.uk *
8 * This program is free software; you can redistribute it and/or modify *
9 * it under the terms of the GNU General Public License as published by *
10 * the Free Software Foundation; either version 2 of the License, or *
11 * (at your option) any later version. *
13 * This program is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License for more details. *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program; if not, write to the *
20 * Free Software Foundation, Inc., *
21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
22 ***************************************************************************/
27 #include <jtag/interface.h>
30 /* -ino: 060521-1036 */
31 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
32 #include <machine/sysarch.h>
33 #include <machine/cpufunc.h>
34 #define ioperm(startport,length,enable)\
35 i386_set_ioperm((startport), (length), (enable))
36 #endif /* __FreeBSD__ */
38 #if PARPORT_USE_PPDEV == 1
39 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
40 #include <dev/ppbus/ppi.h>
41 #include <dev/ppbus/ppbconf.h>
42 #define PPRSTATUS PPIGSTATUS
43 #define PPWDATA PPISDATA
45 #include <linux/parport.h>
46 #include <linux/ppdev.h>
48 #include <sys/ioctl.h>
49 #else /* not PARPORT_USE_PPDEV */
55 #if PARPORT_USE_GIVEIO == 1 && IS_CYGWIN == 1
60 /* parallel port cable description
64 uint8_t TDO_MASK
; /* status port bit containing current TDO value */
65 uint8_t TRST_MASK
; /* data port bit for TRST */
66 uint8_t TMS_MASK
; /* data port bit for TMS */
67 uint8_t TCK_MASK
; /* data port bit for TCK */
68 uint8_t TDI_MASK
; /* data port bit for TDI */
69 uint8_t SRST_MASK
; /* data port bit for SRST */
70 uint8_t OUTPUT_INVERT
; /* data port bits that should be inverted */
71 uint8_t INPUT_INVERT
; /* status port that should be inverted */
72 uint8_t PORT_INIT
; /* initialize data port with this value */
73 uint8_t PORT_EXIT
; /* de-initialize data port with this value */
74 uint8_t LED_MASK
; /* data port bit for LED */
77 static struct cable cables
[] =
79 /* name tdo trst tms tck tdi srst o_inv i_inv init exit led */
80 { "wiggler", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x01, 0x80, 0x80, 0x80, 0x00 },
81 { "wiggler2", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x01, 0x80, 0x80, 0x00, 0x20 },
82 { "wiggler_ntrst_inverted", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x11, 0x80, 0x80, 0x80, 0x00 },
83 { "old_amt_wiggler", 0x80, 0x01, 0x02, 0x04, 0x08, 0x10, 0x11, 0x80, 0x80, 0x80, 0x00 },
84 { "arm-jtag", 0x80, 0x01, 0x02, 0x04, 0x08, 0x10, 0x01, 0x80, 0x80, 0x80, 0x00 },
85 { "chameleon", 0x80, 0x00, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00 },
86 { "dlc5", 0x10, 0x00, 0x04, 0x02, 0x01, 0x00, 0x00, 0x00, 0x10, 0x10, 0x00 },
87 { "triton", 0x80, 0x08, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00 },
88 { "lattice", 0x40, 0x10, 0x04, 0x02, 0x01, 0x08, 0x00, 0x00, 0x18, 0x18, 0x00 },
89 { "flashlink", 0x20, 0x10, 0x02, 0x01, 0x04, 0x20, 0x30, 0x20, 0x00, 0x00, 0x00 },
90 /* Altium Universal JTAG cable. Set the cable to Xilinx Mode and wire to target as follows:
95 SOFT TCK - Target TRST
96 SOFT TDI - Target SRST
98 { "altium", 0x10, 0x20, 0x04, 0x02, 0x01, 0x80, 0x00, 0x00, 0x10, 0x00, 0x08 },
99 { NULL
, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }
103 static char* parport_cable
= NULL
;
104 static uint16_t parport_port
;
105 static bool parport_exit
= 0;
106 static uint32_t parport_toggling_time_ns
= 1000;
107 static int wait_states
;
109 /* interface variables
111 static struct cable
* cable
;
112 static uint8_t dataport_value
= 0x0;
114 #if PARPORT_USE_PPDEV == 1
115 static int device_handle
;
117 static unsigned long dataport
;
118 static unsigned long statusport
;
121 static int parport_read(void)
125 #if PARPORT_USE_PPDEV == 1
126 ioctl(device_handle
, PPRSTATUS
, & data
);
128 data
= inb(statusport
);
131 if ((data
^ cable
->INPUT_INVERT
) & cable
->TDO_MASK
)
137 static __inline__
void parport_write_data(void)
140 output
= dataport_value
^ cable
->OUTPUT_INVERT
;
142 #if PARPORT_USE_PPDEV == 1
143 ioctl(device_handle
, PPWDATA
, &output
);
145 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
146 outb(dataport
, output
);
148 outb(output
, dataport
);
153 static void parport_write(int tck
, int tms
, int tdi
)
155 int i
= wait_states
+ 1;
158 dataport_value
|= cable
->TCK_MASK
;
160 dataport_value
&= ~cable
->TCK_MASK
;
163 dataport_value
|= cable
->TMS_MASK
;
165 dataport_value
&= ~cable
->TMS_MASK
;
168 dataport_value
|= cable
->TDI_MASK
;
170 dataport_value
&= ~cable
->TDI_MASK
;
173 parport_write_data();
176 /* (1) assert or (0) deassert reset lines */
177 static void parport_reset(int trst
, int srst
)
179 LOG_DEBUG("trst: %i, srst: %i", trst
, srst
);
182 dataport_value
|= cable
->TRST_MASK
;
184 dataport_value
&= ~cable
->TRST_MASK
;
187 dataport_value
|= cable
->SRST_MASK
;
189 dataport_value
&= ~cable
->SRST_MASK
;
191 parport_write_data();
194 /* turn LED on parport adapter on (1) or off (0) */
195 static void parport_led(int on
)
198 dataport_value
|= cable
->LED_MASK
;
200 dataport_value
&= ~cable
->LED_MASK
;
202 parport_write_data();
205 static int parport_speed(int speed
)
211 static int parport_khz(int khz
, int* jtag_speed
)
214 LOG_DEBUG("RCLK not supported");
218 *jtag_speed
= 499999 / (khz
* parport_toggling_time_ns
);
222 static int parport_speed_div(int speed
, int* khz
)
224 uint32_t denominator
= (speed
+ 1) * parport_toggling_time_ns
;
226 *khz
= (499999 + denominator
) / denominator
;
230 #if PARPORT_USE_GIVEIO == 1
231 static int parport_get_giveio_access(void)
234 OSVERSIONINFO version
;
236 version
.dwOSVersionInfoSize
= sizeof version
;
237 if (!GetVersionEx(&version
)) {
241 if (version
.dwPlatformId
!= VER_PLATFORM_WIN32_NT
)
244 h
= CreateFile("\\\\.\\giveio", GENERIC_READ
, 0, NULL
, OPEN_EXISTING
, FILE_ATTRIBUTE_NORMAL
, NULL
);
245 if (h
== INVALID_HANDLE_VALUE
) {
256 static struct bitbang_interface parport_bitbang
= {
257 .read
= &parport_read
,
258 .write
= &parport_write
,
259 .reset
= &parport_reset
,
260 .blink
= &parport_led
,
263 static int parport_init(void)
265 struct cable
*cur_cable
;
266 #if PARPORT_USE_PPDEV == 1
272 if ((parport_cable
== NULL
) || (parport_cable
[0] == 0))
274 parport_cable
= "wiggler";
275 LOG_WARNING("No parport cable specified, using default 'wiggler'");
278 while (cur_cable
->name
)
280 if (strcmp(cur_cable
->name
, parport_cable
) == 0)
290 LOG_ERROR("No matching cable found for %s", parport_cable
);
291 return ERROR_JTAG_INIT_FAILED
;
294 dataport_value
= cable
->PORT_INIT
;
296 #if PARPORT_USE_PPDEV == 1
297 if (device_handle
> 0)
299 LOG_ERROR("device is already opened");
300 return ERROR_JTAG_INIT_FAILED
;
303 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
304 LOG_DEBUG("opening /dev/ppi%d...", parport_port
);
306 snprintf(buffer
, 256, "/dev/ppi%d", parport_port
);
307 device_handle
= open(buffer
, O_WRONLY
);
308 #else /* not __FreeBSD__, __FreeBSD_kernel__ */
309 LOG_DEBUG("opening /dev/parport%d...", parport_port
);
311 snprintf(buffer
, 256, "/dev/parport%d", parport_port
);
312 device_handle
= open(buffer
, O_WRONLY
);
313 #endif /* __FreeBSD__, __FreeBSD_kernel__ */
315 if (device_handle
< 0)
318 LOG_ERROR("cannot open device. check it exists and that user read and write rights are set. errno=%d", err
);
319 return ERROR_JTAG_INIT_FAILED
;
322 LOG_DEBUG("...open");
324 #if !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__)
325 int i
= ioctl(device_handle
, PPCLAIM
);
329 LOG_ERROR("cannot claim device");
330 return ERROR_JTAG_INIT_FAILED
;
333 i
= PARPORT_MODE_COMPAT
;
334 i
= ioctl(device_handle
, PPSETMODE
, & i
);
337 LOG_ERROR(" cannot set compatible mode to device");
338 return ERROR_JTAG_INIT_FAILED
;
341 i
= IEEE1284_MODE_COMPAT
;
342 i
= ioctl(device_handle
, PPNEGOT
, & i
);
345 LOG_ERROR("cannot set compatible 1284 mode to device");
346 return ERROR_JTAG_INIT_FAILED
;
348 #endif /* not __FreeBSD__, __FreeBSD_kernel__ */
350 #else /* not PARPORT_USE_PPDEV */
351 if (parport_port
== 0)
353 parport_port
= 0x378;
354 LOG_WARNING("No parport port specified, using default '0x378' (LPT1)");
357 dataport
= parport_port
;
358 statusport
= parport_port
+ 1;
360 LOG_DEBUG("requesting privileges for parallel port 0x%lx...", dataport
);
361 #if PARPORT_USE_GIVEIO == 1
362 if (parport_get_giveio_access() != 0)
363 #else /* PARPORT_USE_GIVEIO */
364 if (ioperm(dataport
, 3, 1) != 0)
365 #endif /* PARPORT_USE_GIVEIO */
367 LOG_ERROR("missing privileges for direct i/o");
368 return ERROR_JTAG_INIT_FAILED
;
370 LOG_DEBUG("...privileges granted");
372 /* make sure parallel port is in right mode (clear tristate and interrupt */
373 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
374 outb(parport_port
+ 2, 0x0);
376 outb(0x0, parport_port
+ 2);
379 #endif /* PARPORT_USE_PPDEV */
382 parport_write(0, 0, 0);
385 bitbang_interface
= &parport_bitbang
;
390 static int parport_quit(void)
396 dataport_value
= cable
->PORT_EXIT
;
397 parport_write_data();
403 parport_cable
= NULL
;
409 COMMAND_HANDLER(parport_handle_parport_port_command
)
413 /* only if the port wasn't overwritten by cmdline */
414 if (parport_port
== 0)
416 COMMAND_PARSE_NUMBER(u16
, CMD_ARGV
[0], parport_port
);
420 LOG_ERROR("The parport port was already configured!");
425 command_print(CMD_CTX
, "parport port = 0x%" PRIx16
"", parport_port
);
430 COMMAND_HANDLER(parport_handle_parport_cable_command
)
435 /* only if the cable name wasn't overwritten by cmdline */
436 if (parport_cable
== 0)
438 /* REVISIT first verify that it's listed in cables[] ... */
439 parport_cable
= malloc(strlen(CMD_ARGV
[0]) + sizeof(char));
440 strcpy(parport_cable
, CMD_ARGV
[0]);
443 /* REVISIT it's probably worth returning the current value ... */
448 COMMAND_HANDLER(parport_handle_write_on_exit_command
)
452 command_print(CMD_CTX
, "usage: parport_write_on_exit <on | off>");
456 COMMAND_PARSE_ON_OFF(CMD_ARGV
[0], parport_exit
);
461 COMMAND_HANDLER(parport_handle_parport_toggling_time_command
)
465 int retval
= parse_u32(CMD_ARGV
[0], &ns
);
467 if (ERROR_OK
!= retval
)
471 LOG_ERROR("0 ns is not a valid parport toggling time");
475 parport_toggling_time_ns
= ns
;
476 retval
= jtag_get_speed(&wait_states
);
477 if (retval
!= ERROR_OK
)
481 command_print(CMD_CTX
, "parport toggling time = %" PRIu32
" ns",
482 parport_toggling_time_ns
);
487 static const struct command_registration parport_command_handlers
[] = {
489 .name
= "parport_port",
490 .handler
= parport_handle_parport_port_command
,
491 .mode
= COMMAND_CONFIG
,
492 .help
= "Display the address of the I/O port (e.g. 0x378) "
493 "or the number of the '/dev/parport' device used. "
494 "If a parameter is provided, first change that port.",
495 .usage
= "[port_number]",
498 .name
= "parport_cable",
499 .handler
= parport_handle_parport_cable_command
,
500 .mode
= COMMAND_CONFIG
,
501 .help
= "Set the layout of the parallel port cable "
502 "used to connect to the target.",
503 /* REVISIT there's no way to list layouts we know ... */
507 .name
= "parport_write_on_exit",
508 .handler
= parport_handle_write_on_exit_command
,
509 .mode
= COMMAND_CONFIG
,
510 .help
= "Configure the parallel driver to write "
511 "a known value to the parallel interface on exit.",
512 .usage
= "('on'|'off')",
515 .name
= "parport_toggling_time",
516 .handler
= parport_handle_parport_toggling_time_command
,
517 .mode
= COMMAND_CONFIG
,
518 .help
= "Displays or assigns how many nanoseconds it "
519 "takes for the hardware to toggle TCK.",
520 .usage
= "[nanoseconds]",
522 COMMAND_REGISTRATION_DONE
525 struct jtag_interface parport_interface
= {
527 .supported
= DEBUG_CAP_TMS_SEQ
,
528 .commands
= parport_command_handlers
,
530 .init
= parport_init
,
531 .quit
= parport_quit
,
533 .speed_div
= parport_speed_div
,
534 .speed
= parport_speed
,
535 .execute_queue
= bitbang_execute_queue
,
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