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"
40 #if PARPORT_USE_PPDEV == 1
41 #include <linux/parport.h>
42 #include <linux/ppdev.h>
44 #include <sys/ioctl.h>
46 #else /* not PARPORT_USE_PPDEV */
52 #if PARPORT_USE_GIVEIO == 1
62 u16 amt_jtagaccel_port;
64 /* interface variables
66 static u8 aw_control_rst = 0x00;
67 static u8 aw_control_fsm = 0x10;
68 static u8 aw_control_baudrate = 0x20;
70 static int rtck_enabled = 0;
72 #if PARPORT_USE_PPDEV == 1
73 static int device_handle;
74 int addr_mode = IEEE1284_MODE_EPP | IEEE1284_ADDR ;
75 int data_mode = IEEE1284_MODE_EPP | IEEE1284_DATA ;
76 #define AMT_AW(val) do { ioctl(device_handle, PPSETMODE, &addr_mode); write(device_handle, &val, 1); } while (0)
77 #define AMT_AR(val) do { ioctl(device_handle, PPSETMODE, &addr_mode); read(device_handle, &val, 1); } while (0)
78 #define AMT_DW(val) do { ioctl(device_handle, PPSETMODE, &data_mode); write(device_handle, &val, 1); } while (0)
79 #define AMT_DR(val) do { ioctl(device_handle, PPSETMODE, &data_mode); read(device_handle, &val, 1); } while (0)
81 #define AMT_AW(val) do { outb(val, amt_jtagaccel_port + 3); } while (0)
82 #define AMT_AR(val) do { val = inb(amt_jtagaccel_port + 3); } while (0)
83 #define AMT_DW(val) do { outb(val, amt_jtagaccel_port + 4); } while (0)
84 #define AMT_DR(val) do { val = inb(amt_jtagaccel_port + 4); } while (0)
87 int amt_jtagaccel_execute_queue(void);
88 int amt_jtagaccel_register_commands(struct command_context_s *cmd_ctx);
89 int amt_jtagaccel_speed(int speed);
90 int amt_jtagaccel_init(void);
91 int amt_jtagaccel_quit(void);
93 int amt_jtagaccel_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
94 int amt_jtagaccel_handle_rtck_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
96 /* tap_move[i][j]: tap movement command to go from state i to state j
104 u8 amt_jtagaccel_tap_move[6][6][2] =
106 /* TLR RTI SD PD SI PI */
107 {{0x1f, 0x00}, {0x0f, 0x00}, {0x8a, 0x04}, {0x0a, 0x00}, {0x06, 0x00}, {0x96, 0x00}}, /* TLR */
108 {{0x1f, 0x00}, {0x00, 0x00}, {0x85, 0x08}, {0x05, 0x00}, {0x8b, 0x08}, {0x0b, 0x00}}, /* RTI */
109 {{0x1f, 0x00}, {0x0d, 0x00}, {0x00, 0x00}, {0x01, 0x00}, {0x8f, 0x09}, {0x8f, 0x01}}, /* SD */
110 {{0x1f, 0x00}, {0x0c, 0x00}, {0x08, 0x00}, {0x00, 0x00}, {0x8f, 0x09}, {0x8f, 0x01}}, /* PD */
111 {{0x1f, 0x00}, {0x0d, 0x00}, {0x07, 0x00}, {0x97, 0x00}, {0x00, 0x00}, {0x01, 0x00}}, /* SI */
112 {{0x1f, 0x00}, {0x0c, 0x00}, {0x07, 0x00}, {0x97, 0x00}, {0x08, 0x00}, {0x00, 0x00}}, /* PI */
115 jtag_interface_t amt_jtagaccel_interface =
117 .name = "amt_jtagaccel",
119 .execute_queue = amt_jtagaccel_execute_queue,
121 .speed = amt_jtagaccel_speed,
122 .register_commands = amt_jtagaccel_register_commands,
123 .init = amt_jtagaccel_init,
124 .quit = amt_jtagaccel_quit,
127 int amt_jtagaccel_register_commands(struct command_context_s *cmd_ctx)
129 register_command(cmd_ctx, NULL, "parport_port", amt_jtagaccel_handle_parport_port_command,
130 COMMAND_CONFIG, NULL);
131 register_command(cmd_ctx, NULL, "rtck", amt_jtagaccel_handle_rtck_command,
132 COMMAND_CONFIG, NULL);
137 void amt_jtagaccel_reset(int trst, int srst)
140 aw_control_rst |= 0x4;
142 aw_control_rst &= ~0x4;
145 aw_control_rst |= 0x1;
147 aw_control_rst &= ~0x1;
149 AMT_AW(aw_control_rst);
152 int amt_jtagaccel_speed(int speed)
154 aw_control_baudrate &= 0xf0;
155 aw_control_baudrate |= speed & 0x0f;
156 AMT_AW(aw_control_baudrate);
161 void amt_jtagaccel_end_state(state)
163 if (tap_move_map[state] != -1)
167 LOG_ERROR("BUG: %i is not a valid end state", state);
172 void amt_wait_scan_busy()
178 while (((ar_status) & 0x80) && (timeout-- > 0))
181 if (ar_status & 0x80)
183 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);
188 void amt_jtagaccel_state_move(void)
193 tms_scan[0] = amt_jtagaccel_tap_move[tap_move_map[cur_state]][tap_move_map[end_state]][0];
194 tms_scan[1] = amt_jtagaccel_tap_move[tap_move_map[cur_state]][tap_move_map[end_state]][1];
196 aw_scan_tms_5 = 0x40 | (tms_scan[0] & 0x1f);
197 AMT_AW(aw_scan_tms_5);
198 if (jtag_speed > 3 || rtck_enabled)
199 amt_wait_scan_busy();
201 if (tms_scan[0] & 0x80)
203 aw_scan_tms_5 = 0x40 | (tms_scan[1] & 0x1f);
204 AMT_AW(aw_scan_tms_5);
205 if (jtag_speed > 3 || rtck_enabled)
206 amt_wait_scan_busy();
209 cur_state = end_state;
212 void amt_jtagaccel_runtest(int num_cycles)
218 enum tap_state saved_end_state = end_state;
220 /* only do a state_move when we're not already in RTI */
221 if (cur_state != TAP_RTI)
223 amt_jtagaccel_end_state(TAP_RTI);
224 amt_jtagaccel_state_move();
227 while (num_cycles - i >= 5)
229 aw_scan_tms_5 = 0x40;
230 AMT_AW(aw_scan_tms_5);
234 if (num_cycles - i > 0)
236 aw_scan_tms_1to4 = 0x80 | ((num_cycles - i - 1) & 0x3) << 4;
237 AMT_AW(aw_scan_tms_1to4);
240 amt_jtagaccel_end_state(saved_end_state);
241 if (cur_state != end_state)
242 amt_jtagaccel_state_move();
245 void amt_jtagaccel_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size)
247 int bits_left = scan_size;
249 enum tap_state saved_end_state = end_state;
257 amt_jtagaccel_end_state(TAP_SI);
259 amt_jtagaccel_end_state(TAP_SD);
261 amt_jtagaccel_state_move();
262 amt_jtagaccel_end_state(saved_end_state);
264 /* handle unaligned bits at the beginning */
265 if ((scan_size - 1) % 8)
267 aw_tdi_option = 0x30 | (((scan_size - 1) % 8) - 1);
268 AMT_AW(aw_tdi_option);
270 dw_tdi_scan = buf_get_u32(buffer, bit_count, (scan_size - 1) % 8) & 0xff;
272 if (jtag_speed > 3 || rtck_enabled)
273 amt_wait_scan_busy();
275 if ((type == SCAN_IN) || (type == SCAN_IO))
278 dr_tdo = dr_tdo >> (8 - ((scan_size - 1) % 8));
279 buf_set_u32(buffer, bit_count, (scan_size - 1) % 8, dr_tdo);
282 bit_count += (scan_size - 1) % 8;
283 bits_left -= (scan_size - 1) % 8;
286 while (bits_left - 1 >= 8)
288 dw_tdi_scan = buf_get_u32(buffer, bit_count, 8) & 0xff;
290 if (jtag_speed > 3 || rtck_enabled)
291 amt_wait_scan_busy();
293 if ((type == SCAN_IN) || (type == SCAN_IO))
296 buf_set_u32(buffer, bit_count, 8, dr_tdo);
303 tms_scan[0] = amt_jtagaccel_tap_move[tap_move_map[cur_state]][tap_move_map[end_state]][0];
304 tms_scan[1] = amt_jtagaccel_tap_move[tap_move_map[cur_state]][tap_move_map[end_state]][1];
305 aw_tms_scan = 0x40 | (tms_scan[0] & 0x1f) | (buf_get_u32(buffer, bit_count, 1) << 5);
307 if (jtag_speed > 3 || rtck_enabled)
308 amt_wait_scan_busy();
310 if ((type == SCAN_IN) || (type == SCAN_IO))
313 dr_tdo = dr_tdo >> 7;
314 buf_set_u32(buffer, bit_count, 1, dr_tdo);
317 if (tms_scan[0] & 0x80)
319 aw_tms_scan = 0x40 | (tms_scan[1] & 0x1f);
321 if (jtag_speed > 3 || rtck_enabled)
322 amt_wait_scan_busy();
324 cur_state = end_state;
327 int amt_jtagaccel_execute_queue(void)
329 jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
335 /* return ERROR_OK, unless a jtag_read_buffer returns a failed check
336 * that wasn't handled by a caller-provided error handler
345 #ifdef _DEBUG_JTAG_IO_
346 LOG_DEBUG("end_state: %i", cmd->cmd.end_state->end_state);
348 if (cmd->cmd.end_state->end_state != -1)
349 amt_jtagaccel_end_state(cmd->cmd.end_state->end_state);
352 #ifdef _DEBUG_JTAG_IO_
353 LOG_DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
355 if (cmd->cmd.reset->trst == 1)
359 amt_jtagaccel_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
362 #ifdef _DEBUG_JTAG_IO_
363 LOG_DEBUG("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, cmd->cmd.runtest->end_state);
365 if (cmd->cmd.runtest->end_state != -1)
366 amt_jtagaccel_end_state(cmd->cmd.runtest->end_state);
367 amt_jtagaccel_runtest(cmd->cmd.runtest->num_cycles);
370 #ifdef _DEBUG_JTAG_IO_
371 LOG_DEBUG("statemove end in %i", cmd->cmd.statemove->end_state);
373 if (cmd->cmd.statemove->end_state != -1)
374 amt_jtagaccel_end_state(cmd->cmd.statemove->end_state);
375 amt_jtagaccel_state_move();
378 #ifdef _DEBUG_JTAG_IO_
379 LOG_DEBUG("scan end in %i", cmd->cmd.scan->end_state);
381 if (cmd->cmd.scan->end_state != -1)
382 amt_jtagaccel_end_state(cmd->cmd.scan->end_state);
383 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
384 type = jtag_scan_type(cmd->cmd.scan);
385 amt_jtagaccel_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
386 if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
387 retval = ERROR_JTAG_QUEUE_FAILED;
392 #ifdef _DEBUG_JTAG_IO_
393 LOG_DEBUG("sleep %i", cmd->cmd.sleep->us);
395 jtag_sleep(cmd->cmd.sleep->us);
398 LOG_ERROR("BUG: unknown JTAG command type encountered");
407 #if PARPORT_USE_GIVEIO == 1
408 int amt_jtagaccel_get_giveio_access()
411 OSVERSIONINFO version;
413 version.dwOSVersionInfoSize = sizeof version;
414 if (!GetVersionEx( &version )) {
418 if (version.dwPlatformId != VER_PLATFORM_WIN32_NT)
421 h = CreateFile( "\\\\.\\giveio", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );
422 if (h == INVALID_HANDLE_VALUE) {
433 int amt_jtagaccel_init(void)
435 #if PARPORT_USE_PPDEV == 1
444 #if PARPORT_USE_PPDEV == 1
445 if (device_handle > 0)
447 LOG_ERROR("device is already opened");
448 return ERROR_JTAG_INIT_FAILED;
451 snprintf(buffer, 256, "/dev/parport%d", amt_jtagaccel_port);
452 device_handle = open(buffer, O_RDWR);
454 if (device_handle < 0)
456 LOG_ERROR("cannot open device. check it exists and that user read and write rights are set");
457 return ERROR_JTAG_INIT_FAILED;
460 i = ioctl(device_handle, PPCLAIM);
463 LOG_ERROR("cannot claim device");
464 return ERROR_JTAG_INIT_FAILED;
467 i = IEEE1284_MODE_EPP;
468 i = ioctl(device_handle, PPSETMODE, & i);
471 LOG_ERROR(" cannot set compatible mode to device");
472 return ERROR_JTAG_INIT_FAILED;
476 i = ioctl(device_handle, PPWCONTROL, &control_port);
479 i = ioctl(device_handle, PPWCONTROL, &control_port);
482 if (amt_jtagaccel_port == 0)
484 amt_jtagaccel_port = 0x378;
485 LOG_WARNING("No parport port specified, using default '0x378' (LPT1)");
488 #if PARPORT_USE_GIVEIO == 1
489 if (amt_jtagaccel_get_giveio_access() != 0) {
490 #else /* PARPORT_USE_GIVEIO */
491 if (ioperm(amt_jtagaccel_port, 5, 1) != 0) {
492 #endif /* PARPORT_USE_GIVEIO */
493 LOG_ERROR("missing privileges for direct i/o");
494 return ERROR_JTAG_INIT_FAILED;
497 /* prepare epp port */
499 status_port = inb(amt_jtagaccel_port + 1);
500 outb(status_port | 0x1, amt_jtagaccel_port + 1);
503 outb(0x00, amt_jtagaccel_port + 2);
504 outb(0x04, amt_jtagaccel_port + 2);
509 /* set RTCK enable bit */
510 aw_control_fsm |= 0x02;
513 /* enable JTAG port */
514 aw_control_fsm |= 0x04;
515 AMT_AW(aw_control_fsm);
517 amt_jtagaccel_speed(jtag_speed);
519 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
520 aw_control_rst &= ~0x8;
522 aw_control_rst |= 0x8;
524 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
525 aw_control_rst &= ~0x2;
527 aw_control_rst |= 0x2;
529 amt_jtagaccel_reset(0, 0);
531 /* read status register */
533 LOG_DEBUG("AR_STATUS: 0x%2.2x", ar_status);
538 int amt_jtagaccel_quit(void)
544 int amt_jtagaccel_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
549 /* only if the port wasn't overwritten by cmdline */
550 if (amt_jtagaccel_port == 0)
551 amt_jtagaccel_port = strtoul(args[0], NULL, 0);
556 int amt_jtagaccel_handle_rtck_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
560 command_print(cmd_ctx, "amt_jtagaccel RTCK feature %s", (rtck_enabled) ? "enabled" : "disabled");
565 if (strcmp(args[0], "enabled") == 0)