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authorMikael Starvik <mikael.starvik@axis.com>2005-07-27 14:44:31 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2005-07-27 19:25:59 -0400
commit05b4c28cba8dc48505322988340307073c353b1e (patch)
tree2d17bd3724babfc0f735988b3e2de862a0f27680 /arch/cris
parent3e41d6522a6922a95f9d953f4171b45b82b3d6f4 (diff)
[PATCH] CRIS update: console
Changes to console. * Added LF->CRLF translation * Make use of real console framework. Signed-off-by: Mikael Starvik <starvik@axis.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/cris')
-rw-r--r--arch/cris/arch-v10/kernel/debugport.c273
1 files changed, 196 insertions, 77 deletions
diff --git a/arch/cris/arch-v10/kernel/debugport.c b/arch/cris/arch-v10/kernel/debugport.c
index 6cf069e5e7b6..f3a85b77c17e 100644
--- a/arch/cris/arch-v10/kernel/debugport.c
+++ b/arch/cris/arch-v10/kernel/debugport.c
@@ -12,6 +12,31 @@
12 * init_etrax_debug() 12 * init_etrax_debug()
13 * 13 *
14 * $Log: debugport.c,v $ 14 * $Log: debugport.c,v $
15 * Revision 1.27 2005/06/10 10:34:14 starvik
16 * Real console support
17 *
18 * Revision 1.26 2005/06/07 07:06:07 starvik
19 * Added LF->CR translation to make ETRAX customers happy.
20 *
21 * Revision 1.25 2005/03/08 08:56:47 mikaelam
22 * Do only set index as port->index if port is defined, otherwise use the index from the command line
23 *
24 * Revision 1.24 2005/01/19 10:26:33 mikaelam
25 * Return the cris serial driver in console device driver callback function
26 *
27 * Revision 1.23 2005/01/14 10:12:17 starvik
28 * KGDB on separate port.
29 * Console fixes from 2.4.
30 *
31 * Revision 1.22 2005/01/11 16:06:13 starvik
32 * typo
33 *
34 * Revision 1.21 2005/01/11 13:49:14 starvik
35 * Added raw_printk to be used where we don't trust the console.
36 *
37 * Revision 1.20 2004/12/27 11:18:32 starvik
38 * Merge of Linux 2.6.10 (not functional yet).
39 *
15 * Revision 1.19 2004/10/21 07:26:16 starvik 40 * Revision 1.19 2004/10/21 07:26:16 starvik
16 * Made it possible to specify console settings on kernel command line. 41 * Made it possible to specify console settings on kernel command line.
17 * 42 *
@@ -114,7 +139,11 @@ struct dbg_port ports[]=
114 R_SERIAL0_BAUD, 139 R_SERIAL0_BAUD,
115 R_SERIAL0_TR_CTRL, 140 R_SERIAL0_TR_CTRL,
116 R_SERIAL0_REC_CTRL, 141 R_SERIAL0_REC_CTRL,
117 IO_STATE(R_IRQ_MASK1_SET, ser0_data, set) 142 IO_STATE(R_IRQ_MASK1_SET, ser0_data, set),
143 0,
144 115200,
145 'N',
146 8
118 }, 147 },
119 { 148 {
120 1, 149 1,
@@ -124,7 +153,11 @@ struct dbg_port ports[]=
124 R_SERIAL1_BAUD, 153 R_SERIAL1_BAUD,
125 R_SERIAL1_TR_CTRL, 154 R_SERIAL1_TR_CTRL,
126 R_SERIAL1_REC_CTRL, 155 R_SERIAL1_REC_CTRL,
127 IO_STATE(R_IRQ_MASK1_SET, ser1_data, set) 156 IO_STATE(R_IRQ_MASK1_SET, ser1_data, set),
157 0,
158 115200,
159 'N',
160 8
128 }, 161 },
129 { 162 {
130 2, 163 2,
@@ -134,7 +167,11 @@ struct dbg_port ports[]=
134 R_SERIAL2_BAUD, 167 R_SERIAL2_BAUD,
135 R_SERIAL2_TR_CTRL, 168 R_SERIAL2_TR_CTRL,
136 R_SERIAL2_REC_CTRL, 169 R_SERIAL2_REC_CTRL,
137 IO_STATE(R_IRQ_MASK1_SET, ser2_data, set) 170 IO_STATE(R_IRQ_MASK1_SET, ser2_data, set),
171 0,
172 115200,
173 'N',
174 8
138 }, 175 },
139 { 176 {
140 3, 177 3,
@@ -144,11 +181,15 @@ struct dbg_port ports[]=
144 R_SERIAL3_BAUD, 181 R_SERIAL3_BAUD,
145 R_SERIAL3_TR_CTRL, 182 R_SERIAL3_TR_CTRL,
146 R_SERIAL3_REC_CTRL, 183 R_SERIAL3_REC_CTRL,
147 IO_STATE(R_IRQ_MASK1_SET, ser3_data, set) 184 IO_STATE(R_IRQ_MASK1_SET, ser3_data, set),
185 0,
186 115200,
187 'N',
188 8
148 } 189 }
149}; 190};
150 191
151static struct tty_driver *serial_driver; 192extern struct tty_driver *serial_driver;
152 193
153struct dbg_port* port = 194struct dbg_port* port =
154#if defined(CONFIG_ETRAX_DEBUG_PORT0) 195#if defined(CONFIG_ETRAX_DEBUG_PORT0)
@@ -162,37 +203,44 @@ struct dbg_port* port =
162#else 203#else
163 NULL; 204 NULL;
164#endif 205#endif
165/* Used by serial.c to register a debug_write_function so that the normal
166 * serial driver is used for kernel debug output
167 */
168typedef int (*debugport_write_function)(int i, const char *buf, unsigned int len);
169 206
170debugport_write_function debug_write_function = NULL; 207static struct dbg_port* kgdb_port =
208#if defined(CONFIG_ETRAX_KGDB_PORT0)
209 &ports[0];
210#elif defined(CONFIG_ETRAX_KGDB_PORT1)
211 &ports[1];
212#elif defined(CONFIG_ETRAX_KGDB_PORT2)
213 &ports[2];
214#elif defined(CONFIG_ETRAX_KGDB_PORT3)
215 &ports[3];
216#else
217 NULL;
218#endif
171 219
172static void 220static void
173start_port(void) 221start_port(struct dbg_port* p)
174{ 222{
175 unsigned long rec_ctrl = 0; 223 unsigned long rec_ctrl = 0;
176 unsigned long tr_ctrl = 0; 224 unsigned long tr_ctrl = 0;
177 225
178 if (!port) 226 if (!p)
179 return; 227 return;
180 228
181 if (port->started) 229 if (p->started)
182 return; 230 return;
183 port->started = 1; 231 p->started = 1;
184 232
185 if (port->index == 0) 233 if (p->index == 0)
186 { 234 {
187 genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma6); 235 genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma6);
188 genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma6, unused); 236 genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma6, unused);
189 } 237 }
190 else if (port->index == 1) 238 else if (p->index == 1)
191 { 239 {
192 genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma8); 240 genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma8);
193 genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma8, usb); 241 genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma8, usb);
194 } 242 }
195 else if (port->index == 2) 243 else if (p->index == 2)
196 { 244 {
197 genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma2); 245 genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma2);
198 genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma2, par0); 246 genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma2, par0);
@@ -211,69 +259,69 @@ start_port(void)
211 259
212 *R_GEN_CONFIG = genconfig_shadow; 260 *R_GEN_CONFIG = genconfig_shadow;
213 261
214 *port->xoff = 262 *p->xoff =
215 IO_STATE(R_SERIAL0_XOFF, tx_stop, enable) | 263 IO_STATE(R_SERIAL0_XOFF, tx_stop, enable) |
216 IO_STATE(R_SERIAL0_XOFF, auto_xoff, disable) | 264 IO_STATE(R_SERIAL0_XOFF, auto_xoff, disable) |
217 IO_FIELD(R_SERIAL0_XOFF, xoff_char, 0); 265 IO_FIELD(R_SERIAL0_XOFF, xoff_char, 0);
218 266
219 switch (port->baudrate) 267 switch (p->baudrate)
220 { 268 {
221 case 0: 269 case 0:
222 case 115200: 270 case 115200:
223 *port->baud = 271 *p->baud =
224 IO_STATE(R_SERIAL0_BAUD, tr_baud, c115k2Hz) | 272 IO_STATE(R_SERIAL0_BAUD, tr_baud, c115k2Hz) |
225 IO_STATE(R_SERIAL0_BAUD, rec_baud, c115k2Hz); 273 IO_STATE(R_SERIAL0_BAUD, rec_baud, c115k2Hz);
226 break; 274 break;
227 case 1200: 275 case 1200:
228 *port->baud = 276 *p->baud =
229 IO_STATE(R_SERIAL0_BAUD, tr_baud, c1200Hz) | 277 IO_STATE(R_SERIAL0_BAUD, tr_baud, c1200Hz) |
230 IO_STATE(R_SERIAL0_BAUD, rec_baud, c1200Hz); 278 IO_STATE(R_SERIAL0_BAUD, rec_baud, c1200Hz);
231 break; 279 break;
232 case 2400: 280 case 2400:
233 *port->baud = 281 *p->baud =
234 IO_STATE(R_SERIAL0_BAUD, tr_baud, c2400Hz) | 282 IO_STATE(R_SERIAL0_BAUD, tr_baud, c2400Hz) |
235 IO_STATE(R_SERIAL0_BAUD, rec_baud, c2400Hz); 283 IO_STATE(R_SERIAL0_BAUD, rec_baud, c2400Hz);
236 break; 284 break;
237 case 4800: 285 case 4800:
238 *port->baud = 286 *p->baud =
239 IO_STATE(R_SERIAL0_BAUD, tr_baud, c4800Hz) | 287 IO_STATE(R_SERIAL0_BAUD, tr_baud, c4800Hz) |
240 IO_STATE(R_SERIAL0_BAUD, rec_baud, c4800Hz); 288 IO_STATE(R_SERIAL0_BAUD, rec_baud, c4800Hz);
241 break; 289 break;
242 case 9600: 290 case 9600:
243 *port->baud = 291 *p->baud =
244 IO_STATE(R_SERIAL0_BAUD, tr_baud, c9600Hz) | 292 IO_STATE(R_SERIAL0_BAUD, tr_baud, c9600Hz) |
245 IO_STATE(R_SERIAL0_BAUD, rec_baud, c9600Hz); 293 IO_STATE(R_SERIAL0_BAUD, rec_baud, c9600Hz);
246 break; 294 break;
247 case 19200: 295 case 19200:
248 *port->baud = 296 *p->baud =
249 IO_STATE(R_SERIAL0_BAUD, tr_baud, c19k2Hz) | 297 IO_STATE(R_SERIAL0_BAUD, tr_baud, c19k2Hz) |
250 IO_STATE(R_SERIAL0_BAUD, rec_baud, c19k2Hz); 298 IO_STATE(R_SERIAL0_BAUD, rec_baud, c19k2Hz);
251 break; 299 break;
252 case 38400: 300 case 38400:
253 *port->baud = 301 *p->baud =
254 IO_STATE(R_SERIAL0_BAUD, tr_baud, c38k4Hz) | 302 IO_STATE(R_SERIAL0_BAUD, tr_baud, c38k4Hz) |
255 IO_STATE(R_SERIAL0_BAUD, rec_baud, c38k4Hz); 303 IO_STATE(R_SERIAL0_BAUD, rec_baud, c38k4Hz);
256 break; 304 break;
257 case 57600: 305 case 57600:
258 *port->baud = 306 *p->baud =
259 IO_STATE(R_SERIAL0_BAUD, tr_baud, c57k6Hz) | 307 IO_STATE(R_SERIAL0_BAUD, tr_baud, c57k6Hz) |
260 IO_STATE(R_SERIAL0_BAUD, rec_baud, c57k6Hz); 308 IO_STATE(R_SERIAL0_BAUD, rec_baud, c57k6Hz);
261 break; 309 break;
262 default: 310 default:
263 *port->baud = 311 *p->baud =
264 IO_STATE(R_SERIAL0_BAUD, tr_baud, c115k2Hz) | 312 IO_STATE(R_SERIAL0_BAUD, tr_baud, c115k2Hz) |
265 IO_STATE(R_SERIAL0_BAUD, rec_baud, c115k2Hz); 313 IO_STATE(R_SERIAL0_BAUD, rec_baud, c115k2Hz);
266 break; 314 break;
267 } 315 }
268 316
269 if (port->parity == 'E') { 317 if (p->parity == 'E') {
270 rec_ctrl = 318 rec_ctrl =
271 IO_STATE(R_SERIAL0_REC_CTRL, rec_par, even) | 319 IO_STATE(R_SERIAL0_REC_CTRL, rec_par, even) |
272 IO_STATE(R_SERIAL0_REC_CTRL, rec_par_en, enable); 320 IO_STATE(R_SERIAL0_REC_CTRL, rec_par_en, enable);
273 tr_ctrl = 321 tr_ctrl =
274 IO_STATE(R_SERIAL0_TR_CTRL, tr_par, even) | 322 IO_STATE(R_SERIAL0_TR_CTRL, tr_par, even) |
275 IO_STATE(R_SERIAL0_TR_CTRL, tr_par_en, enable); 323 IO_STATE(R_SERIAL0_TR_CTRL, tr_par_en, enable);
276 } else if (port->parity == 'O') { 324 } else if (p->parity == 'O') {
277 rec_ctrl = 325 rec_ctrl =
278 IO_STATE(R_SERIAL0_REC_CTRL, rec_par, odd) | 326 IO_STATE(R_SERIAL0_REC_CTRL, rec_par, odd) |
279 IO_STATE(R_SERIAL0_REC_CTRL, rec_par_en, enable); 327 IO_STATE(R_SERIAL0_REC_CTRL, rec_par_en, enable);
@@ -288,8 +336,7 @@ start_port(void)
288 IO_STATE(R_SERIAL0_TR_CTRL, tr_par, even) | 336 IO_STATE(R_SERIAL0_TR_CTRL, tr_par, even) |
289 IO_STATE(R_SERIAL0_TR_CTRL, tr_par_en, disable); 337 IO_STATE(R_SERIAL0_TR_CTRL, tr_par_en, disable);
290 } 338 }
291 339 if (p->bits == 7)
292 if (port->bits == 7)
293 { 340 {
294 rec_ctrl |= IO_STATE(R_SERIAL0_REC_CTRL, rec_bitnr, rec_7bit); 341 rec_ctrl |= IO_STATE(R_SERIAL0_REC_CTRL, rec_bitnr, rec_7bit);
295 tr_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_bitnr, tr_7bit); 342 tr_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_bitnr, tr_7bit);
@@ -300,7 +347,7 @@ start_port(void)
300 tr_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_bitnr, tr_8bit); 347 tr_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_bitnr, tr_8bit);
301 } 348 }
302 349
303 *port->rec_ctrl = 350 *p->rec_ctrl =
304 IO_STATE(R_SERIAL0_REC_CTRL, dma_err, stop) | 351 IO_STATE(R_SERIAL0_REC_CTRL, dma_err, stop) |
305 IO_STATE(R_SERIAL0_REC_CTRL, rec_enable, enable) | 352 IO_STATE(R_SERIAL0_REC_CTRL, rec_enable, enable) |
306 IO_STATE(R_SERIAL0_REC_CTRL, rts_, active) | 353 IO_STATE(R_SERIAL0_REC_CTRL, rts_, active) |
@@ -308,7 +355,7 @@ start_port(void)
308 IO_STATE(R_SERIAL0_REC_CTRL, rec_stick_par, normal) | 355 IO_STATE(R_SERIAL0_REC_CTRL, rec_stick_par, normal) |
309 rec_ctrl; 356 rec_ctrl;
310 357
311 *port->tr_ctrl = 358 *p->tr_ctrl =
312 IO_FIELD(R_SERIAL0_TR_CTRL, txd, 0) | 359 IO_FIELD(R_SERIAL0_TR_CTRL, txd, 0) |
313 IO_STATE(R_SERIAL0_TR_CTRL, tr_enable, enable) | 360 IO_STATE(R_SERIAL0_TR_CTRL, tr_enable, enable) |
314 IO_STATE(R_SERIAL0_TR_CTRL, auto_cts, disabled) | 361 IO_STATE(R_SERIAL0_TR_CTRL, auto_cts, disabled) |
@@ -323,8 +370,18 @@ console_write_direct(struct console *co, const char *buf, unsigned int len)
323 int i; 370 int i;
324 unsigned long flags; 371 unsigned long flags;
325 local_irq_save(flags); 372 local_irq_save(flags);
373
374 if (!port)
375 return;
376
326 /* Send data */ 377 /* Send data */
327 for (i = 0; i < len; i++) { 378 for (i = 0; i < len; i++) {
379 /* LF -> CRLF */
380 if (buf[i] == '\n') {
381 while (!(*port->read & IO_MASK(R_SERIAL0_READ, tr_ready)))
382 ;
383 *port->write = '\r';
384 }
328 /* Wait until transmitter is ready and send.*/ 385 /* Wait until transmitter is ready and send.*/
329 while (!(*port->read & IO_MASK(R_SERIAL0_READ, tr_ready))) 386 while (!(*port->read & IO_MASK(R_SERIAL0_READ, tr_ready)))
330 ; 387 ;
@@ -333,6 +390,25 @@ console_write_direct(struct console *co, const char *buf, unsigned int len)
333 local_irq_restore(flags); 390 local_irq_restore(flags);
334} 391}
335 392
393int raw_printk(const char *fmt, ...)
394{
395 static char buf[1024];
396 int printed_len;
397 static int first = 1;
398 if (first) {
399 /* Force reinitialization of the port to get manual mode. */
400 port->started = 0;
401 start_port(port);
402 first = 0;
403 }
404 va_list args;
405 va_start(args, fmt);
406 printed_len = vsnprintf(buf, sizeof(buf), fmt, args);
407 va_end(args);
408 console_write_direct(NULL, buf, strlen(buf));
409 return printed_len;
410}
411
336static void 412static void
337console_write(struct console *co, const char *buf, unsigned int len) 413console_write(struct console *co, const char *buf, unsigned int len)
338{ 414{
@@ -345,18 +421,7 @@ console_write(struct console *co, const char *buf, unsigned int len)
345 return; 421 return;
346#endif 422#endif
347 423
348 start_port(); 424 console_write_direct(co, buf, len);
349
350#ifdef CONFIG_ETRAX_KGDB
351 /* kgdb needs to output debug info using the gdb protocol */
352 putDebugString(buf, len);
353 return;
354#endif
355
356 if (debug_write_function)
357 debug_write_function(co->index, buf, len);
358 else
359 console_write_direct(co, buf, len);
360} 425}
361 426
362/* legacy function */ 427/* legacy function */
@@ -374,8 +439,11 @@ getDebugChar(void)
374{ 439{
375 unsigned long readval; 440 unsigned long readval;
376 441
442 if (!kgdb_port)
443 return 0;
444
377 do { 445 do {
378 readval = *port->read; 446 readval = *kgdb_port->read;
379 } while (!(readval & IO_MASK(R_SERIAL0_READ, data_avail))); 447 } while (!(readval & IO_MASK(R_SERIAL0_READ, data_avail)));
380 448
381 return (readval & IO_MASK(R_SERIAL0_READ, data_in)); 449 return (readval & IO_MASK(R_SERIAL0_READ, data_in));
@@ -386,9 +454,12 @@ getDebugChar(void)
386void 454void
387putDebugChar(int val) 455putDebugChar(int val)
388{ 456{
389 while (!(*port->read & IO_MASK(R_SERIAL0_READ, tr_ready))) 457 if (!kgdb_port)
458 return;
459
460 while (!(*kgdb_port->read & IO_MASK(R_SERIAL0_READ, tr_ready)))
390 ; 461 ;
391 *port->write = val; 462 *kgdb_port->write = val;
392} 463}
393 464
394/* Enable irq for receiving chars on the debug port, used by kgdb */ 465/* Enable irq for receiving chars on the debug port, used by kgdb */
@@ -396,19 +467,16 @@ putDebugChar(int val)
396void 467void
397enableDebugIRQ(void) 468enableDebugIRQ(void)
398{ 469{
399 *R_IRQ_MASK1_SET = port->irq; 470 if (!kgdb_port)
471 return;
472
473 *R_IRQ_MASK1_SET = kgdb_port->irq;
400 /* use R_VECT_MASK directly, since we really bypass Linux normal 474 /* use R_VECT_MASK directly, since we really bypass Linux normal
401 * IRQ handling in kgdb anyway, we don't need to use enable_irq 475 * IRQ handling in kgdb anyway, we don't need to use enable_irq
402 */ 476 */
403 *R_VECT_MASK_SET = IO_STATE(R_VECT_MASK_SET, serial, set); 477 *R_VECT_MASK_SET = IO_STATE(R_VECT_MASK_SET, serial, set);
404 478
405 *port->rec_ctrl = IO_STATE(R_SERIAL0_REC_CTRL, rec_enable, enable); 479 *kgdb_port->rec_ctrl = IO_STATE(R_SERIAL0_REC_CTRL, rec_enable, enable);
406}
407
408static struct tty_driver*
409etrax_console_device(struct console* co, int *index)
410{
411 return serial_driver;
412} 480}
413 481
414static int __init 482static int __init
@@ -428,11 +496,69 @@ console_setup(struct console *co, char *options)
428 if (*s) port->parity = *s++; 496 if (*s) port->parity = *s++;
429 if (*s) port->bits = *s++ - '0'; 497 if (*s) port->bits = *s++ - '0';
430 port->started = 0; 498 port->started = 0;
431 start_port(); 499 start_port(0);
432 } 500 }
433 return 0; 501 return 0;
434} 502}
435 503
504/* This is a dummy serial device that throws away anything written to it.
505 * This is used when no debug output is wanted.
506 */
507static struct tty_driver dummy_driver;
508
509static int dummy_open(struct tty_struct *tty, struct file * filp)
510{
511 return 0;
512}
513
514static void dummy_close(struct tty_struct *tty, struct file * filp)
515{
516}
517
518static int dummy_write(struct tty_struct * tty,
519 const unsigned char *buf, int count)
520{
521 return count;
522}
523
524static int
525dummy_write_room(struct tty_struct *tty)
526{
527 return 8192;
528}
529
530void __init
531init_dummy_console(void)
532{
533 memset(&dummy_driver, 0, sizeof(struct tty_driver));
534 dummy_driver.driver_name = "serial";
535 dummy_driver.name = "ttyS";
536 dummy_driver.major = TTY_MAJOR;
537 dummy_driver.minor_start = 68;
538 dummy_driver.num = 1; /* etrax100 has 4 serial ports */
539 dummy_driver.type = TTY_DRIVER_TYPE_SERIAL;
540 dummy_driver.subtype = SERIAL_TYPE_NORMAL;
541 dummy_driver.init_termios = tty_std_termios;
542 dummy_driver.init_termios.c_cflag =
543 B115200 | CS8 | CREAD | HUPCL | CLOCAL; /* is normally B9600 default... */
544 dummy_driver.flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
545
546 dummy_driver.open = dummy_open;
547 dummy_driver.close = dummy_close;
548 dummy_driver.write = dummy_write;
549 dummy_driver.write_room = dummy_write_room;
550 if (tty_register_driver(&dummy_driver))
551 panic("Couldn't register dummy serial driver\n");
552}
553
554static struct tty_driver*
555etrax_console_device(struct console* co, int *index)
556{
557 if (port)
558 *index = port->index;
559 return port ? serial_driver : &dummy_driver;
560}
561
436static struct console sercons = { 562static struct console sercons = {
437 name : "ttyS", 563 name : "ttyS",
438 write: console_write, 564 write: console_write,
@@ -504,28 +630,21 @@ init_etrax_debug(void)
504 static int first = 1; 630 static int first = 1;
505 631
506 if (!first) { 632 if (!first) {
507 if (!port) { 633 unregister_console(&sercons);
508 register_console(&sercons0); 634 register_console(&sercons0);
509 register_console(&sercons1); 635 register_console(&sercons1);
510 register_console(&sercons2); 636 register_console(&sercons2);
511 register_console(&sercons3); 637 register_console(&sercons3);
512 unregister_console(&sercons); 638 init_dummy_console();
513 }
514 return 0; 639 return 0;
515 } 640 }
516 first = 0;
517 if (port)
518 register_console(&sercons);
519 return 0;
520}
521 641
522int __init 642 first = 0;
523init_console(void) 643 register_console(&sercons);
524{ 644 start_port(port);
525 serial_driver = alloc_tty_driver(1); 645#ifdef CONFIG_ETRAX_KGDB
526 if (!serial_driver) 646 start_port(kgdb_port);
527 return -ENOMEM; 647#endif
528 return 0; 648 return 0;
529} 649}
530
531__initcall(init_etrax_debug); 650__initcall(init_etrax_debug);