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 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
22 ***************************************************************************/
28 #include <jtag/interface.h>
31 /* -ino: 060521-1036 */
32 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
33 #include <machine/sysarch.h>
34 #include <machine/cpufunc.h>
35 #define ioperm(startport, length, enable)\
36 i386_set_ioperm((startport), (length), (enable))
37 #endif /* __FreeBSD__ */
39 #if PARPORT_USE_PPDEV == 1
40 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
41 #include <dev/ppbus/ppi.h>
42 #include <dev/ppbus/ppbconf.h>
43 #define PPRSTATUS PPIGSTATUS
44 #define PPWDATA PPISDATA
46 #include <linux/parport.h>
47 #include <linux/ppdev.h>
49 #include <sys/ioctl.h>
50 #else /* not PARPORT_USE_PPDEV */
56 #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
[] = {
78 /* name tdo trst tms tck tdi srst o_inv i_inv init exit led */
79 { "wiggler", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x01, 0x80, 0x80, 0x80, 0x00 },
80 { "wiggler2", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x01, 0x80, 0x80, 0x00, 0x20 },
81 { "wiggler_ntrst_inverted", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x11, 0x80, 0x80, 0x80, 0x00 },
82 { "old_amt_wiggler", 0x80, 0x01, 0x02, 0x04, 0x08, 0x10, 0x11, 0x80, 0x80, 0x80, 0x00 },
83 { "arm-jtag", 0x80, 0x01, 0x02, 0x04, 0x08, 0x10, 0x01, 0x80, 0x80, 0x80, 0x00 },
84 { "chameleon", 0x80, 0x00, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00 },
85 { "dlc5", 0x10, 0x00, 0x04, 0x02, 0x01, 0x00, 0x00, 0x00, 0x10, 0x10, 0x00 },
86 { "triton", 0x80, 0x08, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00 },
87 { "lattice", 0x40, 0x10, 0x04, 0x02, 0x01, 0x08, 0x00, 0x00, 0x18, 0x18, 0x00 },
88 { "flashlink", 0x20, 0x10, 0x02, 0x01, 0x04, 0x20, 0x30, 0x20, 0x00, 0x00, 0x00 },
89 /* Altium Universal JTAG cable. Set the cable to Xilinx Mode and wire to target as follows:
94 SOFT TCK - Target TRST
95 SOFT TDI - Target SRST
97 { "altium", 0x10, 0x20, 0x04, 0x02, 0x01, 0x80, 0x00, 0x00, 0x10, 0x00, 0x08 },
98 { NULL
, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }
102 static char *parport_cable
;
103 static uint16_t parport_port
;
104 static bool parport_exit
;
105 static uint32_t parport_toggling_time_ns
= 1000;
106 static int wait_states
;
108 /* interface variables
110 static struct cable
*cable
;
111 static uint8_t dataport_value
;
113 #if PARPORT_USE_PPDEV == 1
114 static int device_handle
;
116 static unsigned long dataport
;
117 static unsigned long statusport
;
120 static int parport_read(void)
124 #if PARPORT_USE_PPDEV == 1
125 ioctl(device_handle
, PPRSTATUS
, &data
);
127 data
= inb(statusport
);
130 if ((data
^ cable
->INPUT_INVERT
) & cable
->TDO_MASK
)
136 static inline void parport_write_data(void)
139 output
= dataport_value
^ cable
->OUTPUT_INVERT
;
141 #if PARPORT_USE_PPDEV == 1
142 ioctl(device_handle
, PPWDATA
, &output
);
144 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
145 outb(dataport
, output
);
147 outb(output
, dataport
);
152 static void parport_write(int tck
, int tms
, int tdi
)
154 int i
= wait_states
+ 1;
157 dataport_value
|= cable
->TCK_MASK
;
159 dataport_value
&= ~cable
->TCK_MASK
;
162 dataport_value
|= cable
->TMS_MASK
;
164 dataport_value
&= ~cable
->TMS_MASK
;
167 dataport_value
|= cable
->TDI_MASK
;
169 dataport_value
&= ~cable
->TDI_MASK
;
172 parport_write_data();
175 /* (1) assert or (0) deassert reset lines */
176 static void parport_reset(int trst
, int srst
)
178 LOG_DEBUG("trst: %i, srst: %i", trst
, srst
);
181 dataport_value
|= cable
->TRST_MASK
;
183 dataport_value
&= ~cable
->TRST_MASK
;
186 dataport_value
|= cable
->SRST_MASK
;
188 dataport_value
&= ~cable
->SRST_MASK
;
190 parport_write_data();
193 /* turn LED on parport adapter on (1) or off (0) */
194 static void parport_led(int on
)
197 dataport_value
|= cable
->LED_MASK
;
199 dataport_value
&= ~cable
->LED_MASK
;
201 parport_write_data();
204 static int parport_speed(int speed
)
210 static int parport_khz(int khz
, int *jtag_speed
)
213 LOG_DEBUG("RCLK not supported");
217 *jtag_speed
= 499999 / (khz
* parport_toggling_time_ns
);
221 static int parport_speed_div(int speed
, int *khz
)
223 uint32_t denominator
= (speed
+ 1) * parport_toggling_time_ns
;
225 *khz
= (499999 + denominator
) / denominator
;
229 #if PARPORT_USE_GIVEIO == 1
230 static int parport_get_giveio_access(void)
233 OSVERSIONINFO version
;
235 version
.dwOSVersionInfoSize
= sizeof version
;
236 if (!GetVersionEx(&version
)) {
240 if (version
.dwPlatformId
!= VER_PLATFORM_WIN32_NT
)
243 h
= CreateFile("\\\\.\\giveio", GENERIC_READ
, 0, NULL
, OPEN_EXISTING
, FILE_ATTRIBUTE_NORMAL
, NULL
);
244 if (h
== INVALID_HANDLE_VALUE
) {
255 static struct bitbang_interface parport_bitbang
= {
256 .read
= &parport_read
,
257 .write
= &parport_write
,
258 .reset
= &parport_reset
,
259 .blink
= &parport_led
,
262 static int parport_init(void)
264 struct cable
*cur_cable
;
265 #if PARPORT_USE_PPDEV == 1
271 if (parport_cable
== NULL
) {
272 parport_cable
= strdup("wiggler");
273 LOG_WARNING("No parport cable specified, using default 'wiggler'");
276 while (cur_cable
->name
) {
277 if (strcmp(cur_cable
->name
, parport_cable
) == 0) {
285 LOG_ERROR("No matching cable found for %s", parport_cable
);
286 return ERROR_JTAG_INIT_FAILED
;
289 dataport_value
= cable
->PORT_INIT
;
291 #if PARPORT_USE_PPDEV == 1
292 if (device_handle
> 0) {
293 LOG_ERROR("device is already opened");
294 return ERROR_JTAG_INIT_FAILED
;
297 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
298 LOG_DEBUG("opening /dev/ppi%d...", parport_port
);
300 snprintf(buffer
, 256, "/dev/ppi%d", parport_port
);
301 device_handle
= open(buffer
, O_WRONLY
);
302 #else /* not __FreeBSD__, __FreeBSD_kernel__ */
303 LOG_DEBUG("opening /dev/parport%d...", parport_port
);
305 snprintf(buffer
, 256, "/dev/parport%d", parport_port
);
306 device_handle
= open(buffer
, O_WRONLY
);
307 #endif /* __FreeBSD__, __FreeBSD_kernel__ */
309 if (device_handle
< 0) {
311 LOG_ERROR("cannot open device. check it exists and that user read and write rights are set. errno=%d", err
);
312 return ERROR_JTAG_INIT_FAILED
;
315 LOG_DEBUG("...open");
317 #if !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__)
318 int i
= ioctl(device_handle
, PPCLAIM
);
321 LOG_ERROR("cannot claim device");
322 return ERROR_JTAG_INIT_FAILED
;
325 i
= PARPORT_MODE_COMPAT
;
326 i
= ioctl(device_handle
, PPSETMODE
, &i
);
328 LOG_ERROR(" cannot set compatible mode to device");
329 return ERROR_JTAG_INIT_FAILED
;
332 i
= IEEE1284_MODE_COMPAT
;
333 i
= ioctl(device_handle
, PPNEGOT
, &i
);
335 LOG_ERROR("cannot set compatible 1284 mode to device");
336 return ERROR_JTAG_INIT_FAILED
;
338 #endif /* not __FreeBSD__, __FreeBSD_kernel__ */
340 #else /* not PARPORT_USE_PPDEV */
341 if (parport_port
== 0) {
342 parport_port
= 0x378;
343 LOG_WARNING("No parport port specified, using default '0x378' (LPT1)");
346 dataport
= parport_port
;
347 statusport
= parport_port
+ 1;
349 LOG_DEBUG("requesting privileges for parallel port 0x%lx...", dataport
);
350 #if PARPORT_USE_GIVEIO == 1
351 if (parport_get_giveio_access() != 0) {
352 #else /* PARPORT_USE_GIVEIO */
353 if (ioperm(dataport
, 3, 1) != 0) {
354 #endif /* PARPORT_USE_GIVEIO */
355 LOG_ERROR("missing privileges for direct i/o");
356 return ERROR_JTAG_INIT_FAILED
;
358 LOG_DEBUG("...privileges granted");
360 /* make sure parallel port is in right mode (clear tristate and interrupt */
361 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
362 outb(parport_port
+ 2, 0x0);
364 outb(0x0, parport_port
+ 2);
367 #endif /* PARPORT_USE_PPDEV */
370 parport_write(0, 0, 0);
373 bitbang_interface
= &parport_bitbang
;
378 static int parport_quit(void)
383 dataport_value
= cable
->PORT_EXIT
;
384 parport_write_data();
389 parport_cable
= NULL
;
395 COMMAND_HANDLER(parport_handle_parport_port_command
)
398 /* only if the port wasn't overwritten by cmdline */
399 if (parport_port
== 0)
400 COMMAND_PARSE_NUMBER(u16
, CMD_ARGV
[0], parport_port
);
402 LOG_ERROR("The parport port was already configured!");
407 command_print(CMD_CTX
, "parport port = 0x%" PRIx16
"", parport_port
);
412 COMMAND_HANDLER(parport_handle_parport_cable_command
)
417 /* only if the cable name wasn't overwritten by cmdline */
418 if (parport_cable
== 0) {
419 /* REVISIT first verify that it's listed in cables[] ... */
420 parport_cable
= malloc(strlen(CMD_ARGV
[0]) + sizeof(char));
421 strcpy(parport_cable
, CMD_ARGV
[0]);
424 /* REVISIT it's probably worth returning the current value ... */
429 COMMAND_HANDLER(parport_handle_write_on_exit_command
)
432 return ERROR_COMMAND_SYNTAX_ERROR
;
434 COMMAND_PARSE_ON_OFF(CMD_ARGV
[0], parport_exit
);
439 COMMAND_HANDLER(parport_handle_parport_toggling_time_command
)
443 int retval
= parse_u32(CMD_ARGV
[0], &ns
);
445 if (ERROR_OK
!= retval
)
449 LOG_ERROR("0 ns is not a valid parport toggling time");
453 parport_toggling_time_ns
= ns
;
454 retval
= jtag_get_speed(&wait_states
);
455 if (retval
!= ERROR_OK
) {
456 /* if jtag_get_speed fails then the clock_mode
457 * has not been configured, this happens if parport_toggling_time is
458 * called before the adapter speed is set */
459 LOG_INFO("no parport speed set - defaulting to zero wait states");
464 command_print(CMD_CTX
, "parport toggling time = %" PRIu32
" ns",
465 parport_toggling_time_ns
);
470 static const struct command_registration parport_command_handlers
[] = {
472 .name
= "parport_port",
473 .handler
= parport_handle_parport_port_command
,
474 .mode
= COMMAND_CONFIG
,
475 .help
= "Display the address of the I/O port (e.g. 0x378) "
476 "or the number of the '/dev/parport' device used. "
477 "If a parameter is provided, first change that port.",
478 .usage
= "[port_number]",
481 .name
= "parport_cable",
482 .handler
= parport_handle_parport_cable_command
,
483 .mode
= COMMAND_CONFIG
,
484 .help
= "Set the layout of the parallel port cable "
485 "used to connect to the target.",
486 /* REVISIT there's no way to list layouts we know ... */
490 .name
= "parport_write_on_exit",
491 .handler
= parport_handle_write_on_exit_command
,
492 .mode
= COMMAND_CONFIG
,
493 .help
= "Configure the parallel driver to write "
494 "a known value to the parallel interface on exit.",
495 .usage
= "('on'|'off')",
498 .name
= "parport_toggling_time",
499 .handler
= parport_handle_parport_toggling_time_command
,
500 .mode
= COMMAND_CONFIG
,
501 .help
= "Displays or assigns how many nanoseconds it "
502 "takes for the hardware to toggle TCK.",
503 .usage
= "[nanoseconds]",
505 COMMAND_REGISTRATION_DONE
508 struct jtag_interface parport_interface
= {
510 .supported
= DEBUG_CAP_TMS_SEQ
,
511 .commands
= parport_command_handlers
,
513 .init
= parport_init
,
514 .quit
= parport_quit
,
516 .speed_div
= parport_speed_div
,
517 .speed
= parport_speed
,
518 .execute_queue
= bitbang_execute_queue
,
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