ofw_consinit.c revision 1.3
1 /* $NetBSD: ofw_consinit.c,v 1.3 2007/11/04 16:28:28 garbled Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Tim Rightnour 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: ofw_consinit.c,v 1.3 2007/11/04 16:28:28 garbled Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/buf.h> 44 #include <sys/tty.h> 45 46 #include <machine/autoconf.h> 47 #include <machine/trap.h> 48 #include <machine/bus.h> 49 50 #include <powerpc/ofw_cons.h> 51 52 #include <dev/cons.h> 53 #include <dev/ofw/openfirm.h> 54 55 #include <dev/wscons/wsksymvar.h> 56 #include <dev/wscons/wscons_callbacks.h> 57 58 #include <machine/stdarg.h> 59 60 #include "akbd.h" 61 #include "adbkbd.h" 62 #include "ofb.h" 63 #include "isa.h" 64 65 #include "zsc.h" 66 #if NZSC > 0 67 #include <machine/z8530var.h> 68 #endif 69 70 #include "adb.h" 71 #if (NADB > 0) 72 #include <macppc/dev/adbvar.h> 73 #endif 74 75 #include "ukbd.h" 76 #if (NUKBD > 0) 77 #include <dev/usb/ukbdvar.h> 78 struct usb_kbd_ihandles { 79 struct usb_kbd_ihandles *next; 80 int ihandle; 81 }; 82 #endif 83 84 #include "zstty.h" 85 #if (NZSTTY > 0) 86 #include <dev/ic/z8530reg.h> 87 extern struct consdev consdev_zs; 88 #endif 89 90 #include "pckbc.h" 91 #if (NPCKBC > 0) 92 #include <dev/isa/isareg.h> 93 #include <dev/ic/i8042reg.h> 94 #include <dev/ic/pckbcvar.h> 95 #endif 96 97 extern int console_node, console_instance; 98 99 int chosen, stdin, stdout; 100 int ofkbd_ihandle; 101 102 static void cninit_kd(void); 103 static void ofwoea_bootstrap_console(void); 104 static int ofwbootcons_cngetc(dev_t); 105 static void ofwbootcons_cnputc(dev_t, int); 106 107 /*#define OFDEBUG*/ 108 109 struct consdev consdev_ofwbootcons = { 110 NULL, NULL, 111 ofwbootcons_cngetc, 112 ofwbootcons_cnputc, 113 nullcnpollc, 114 NULL, NULL, NULL, NODEV, CN_INTERNAL, 115 }; 116 117 #ifdef OFDEBUG 118 void ofprint(const char *, ...); 119 120 void ofprint(const char *blah, ...) 121 { 122 va_list va; 123 char buf[256]; 124 int len; 125 126 va_start(va, blah); 127 len = vsnprintf(buf, sizeof(buf), blah, va); 128 OF_write(console_instance, buf, len); 129 } 130 131 #define OFPRINTF ofprint 132 #else 133 #define OFPRINTF while(0) printf 134 #endif 135 136 void 137 cninit(void) 138 { 139 char type[16]; 140 141 ofwoea_bootstrap_console(); 142 143 OFPRINTF("console node: %08x\n", console_node); 144 145 if (console_node == -1) 146 goto nocons; 147 148 memset(type, 0, sizeof(type)); 149 if (OF_getprop(console_node, "device_type", type, sizeof(type)) == -1) 150 goto nocons; 151 152 OFPRINTF("console type: %s\n", type); 153 if (strcmp(type, "display") == 0) { 154 cninit_kd(); 155 return; 156 } 157 158 if (strcmp(type, "serial") == 0) { 159 struct consdev *cp; 160 char name[32]; 161 162 #ifdef PMAC_G5 163 /* The MMU hasn't been initialized yet, use failsafe for now */ 164 cp = &failsafe_cons; 165 cn_tab = cp; 166 (*cp->cn_probe)(cp); 167 (*cp->cn_init)(cp); 168 aprint_verbose("Early G5 console initialized\n"); 169 return; 170 #endif /* PMAC_G5 */ 171 172 #if (NZSTTY > 0) && !defined(MAMBO) 173 OF_getprop(console_node, "name", name, sizeof(name)); 174 if (strcmp(name, "ch-a") == 0 || strcmp(name, "ch-b") == 0) { 175 cp = &consdev_zs; 176 (*cp->cn_probe)(cp); 177 (*cp->cn_init)(cp); 178 cn_tab = cp; 179 } 180 return; 181 #endif /* NZTTY */ 182 183 OF_getprop(console_node, "name", name, sizeof(name)); 184 /* fallback to ofwbootcons */ 185 if (strcmp(name, "serial") == 0) { 186 cp = &consdev_ofwbootcons; 187 cn_tab = cp; 188 } 189 return; 190 } 191 nocons: 192 return; 193 } 194 195 196 static void 197 cninit_kd(void) 198 { 199 int kstdin, node; 200 char name[16]; 201 #if (NAKBD > 0) || (NADBKBD > 0) 202 int akbd; 203 #endif 204 #if NUKBD > 0 205 struct usb_kbd_ihandles *ukbds; 206 int ukbd; 207 #endif 208 209 /* 210 * Attach the console output now (so we can see debugging messages, 211 * if any). 212 */ 213 ofb_cnattach(); 214 215 /* 216 * We must determine which keyboard type we have. 217 */ 218 if (OF_getprop(chosen, "stdin", &kstdin, sizeof(kstdin)) 219 != sizeof(kstdin)) { 220 printf("WARNING: no `stdin' property in /chosen\n"); 221 return; 222 } 223 224 node = OF_instance_to_package(kstdin); 225 memset(name, 0, sizeof(name)); 226 OF_getprop(node, "name", name, sizeof(name)); 227 if (strcmp(name, "keyboard") != 0) { 228 printf("WARNING: stdin is not a keyboard: %s\n", name); 229 return; 230 } 231 232 #if NAKBD > 0 233 memset(name, 0, sizeof(name)); 234 OF_getprop(OF_parent(node), "name", name, sizeof(name)); 235 if (strcmp(name, "adb") == 0) { 236 printf("console keyboard type: ADB\n"); 237 akbd_cnattach(); 238 goto kbd_found; 239 } 240 #endif 241 #if NADBKBD > 0 242 memset(name, 0, sizeof(name)); 243 OF_getprop(OF_parent(node), "name", name, sizeof(name)); 244 if (strcmp(name, "adb") == 0) { 245 printf("console keyboard type: ADB\n"); 246 adbkbd_cnattach(); 247 goto kbd_found; 248 } 249 #endif 250 #if NPCKBC > 0 251 memset(name, 0, sizeof(name)); 252 OF_getprop(OF_parent(node), "name", name, sizeof(name)); 253 if (strcmp(name, "keyboard") == 0) { 254 printf("console keyboard type: PC Keyboard\n"); 255 pckbc_cnattach(&genppc_isa_io_space_tag, IO_KBD, KBCMDP, 256 PCKBC_KBD_SLOT); 257 goto kbd_found; 258 } 259 #endif 260 261 /* 262 * It is not obviously an ADB/PC keyboard. Could be USB, 263 * or ADB on some firmware versions (e.g.: iBook G4) 264 * This is not enough, we have a few more problems: 265 * 266 * (1) The stupid Macintosh firmware uses a 267 * `psuedo-hid' (no typo) or `pseudo-hid', 268 * which apparently merges all keyboards 269 * input into a single input stream. 270 * Because of this, we can't actually 271 * determine which controller or keyboard 272 * is really the console keyboard! 273 * 274 * (2) Even if we could, the keyboard can be USB, 275 * and this requires a lot of the kernel to 276 * be running in order for it to work. 277 * 278 * (3) If the keyboard is behind isa, we don't have enough 279 * kernel setup to use it yet, so punt to the ofroutines. 280 * 281 * So, what we do is this: 282 * 283 * (1) First check for OpenFirmware implementation 284 * that will not let us distinguish between 285 * USB and ADB. In that situation, try attaching 286 * anything as we can, and hope things get better 287 * at autoconfiguration time. 288 * 289 * (2) Assume the keyboard is USB. 290 * Tell the ukbd driver that it is the console. 291 * At autoconfiguration time, it will attach the 292 * first USB keyboard instance as the console 293 * keyboard. 294 * 295 * (3) Until then, so that we have _something_, we 296 * use the OpenFirmware I/O facilities to read 297 * the keyboard. 298 */ 299 300 /* 301 * stdin is /pseudo-hid/keyboard. There is no 302 * `adb-kbd-ihandle or `usb-kbd-ihandles methods 303 * available. Try attaching as ADB. 304 * 305 * XXX This must be called before pmap_bootstrap(). 306 */ 307 if (strcmp(name, "pseudo-hid") == 0) { 308 printf("console keyboard type: unknown, assuming ADB\n"); 309 #if NAKBD > 0 310 akbd_cnattach(); 311 #endif 312 #if NADBKBD > 0 313 adbkbd_cnattach(); 314 #endif 315 goto kbd_found; 316 } 317 318 /* 319 * stdin is /psuedo-hid/keyboard. Test `adb-kbd-ihandle and 320 * `usb-kbd-ihandles to figure out the real keyboard(s). 321 * 322 * XXX This must be called before pmap_bootstrap(). 323 */ 324 325 #if NUKBD > 0 326 if (OF_call_method("`usb-kbd-ihandles", stdin, 0, 1, &ukbds) >= 0 && 327 ukbds != NULL && ukbds->ihandle != 0 && 328 OF_instance_to_package(ukbds->ihandle) != -1) { 329 printf("usb-kbd-ihandles matches\n"); 330 printf("console keyboard type: USB\n"); 331 ukbd_cnattach(); 332 goto kbd_found; 333 } 334 /* Try old method name. */ 335 if (OF_call_method("`usb-kbd-ihandle", kstdin, 0, 1, &ukbd) >= 0 && 336 ukbd != 0 && 337 OF_instance_to_package(ukbd) != -1) { 338 printf("usb-kbd-ihandle matches\n"); 339 printf("console keyboard type: USB\n"); 340 kstdin = ukbd; 341 ukbd_cnattach(); 342 goto kbd_found; 343 } 344 #endif 345 346 #if (NAKBD > 0) || (NADBKBD > 0) 347 if (OF_call_method("`adb-kbd-ihandle", kstdin, 0, 1, &akbd) >= 0 && 348 akbd != 0 && 349 OF_instance_to_package(akbd) != -1) { 350 printf("adb-kbd-ihandle matches\n"); 351 printf("console keyboard type: ADB\n"); 352 kstdin = akbd; 353 #if NAKBD > 0 354 akbd_cnattach(); 355 #endif 356 #if NADBKBD > 0 357 adbkbd_cnattach(); 358 #endif 359 goto kbd_found; 360 } 361 #endif 362 363 #if NUKBD > 0 364 /* 365 * XXX Old firmware does not have `usb-kbd-ihandles method. Assume 366 * XXX USB keyboard anyway. 367 */ 368 printf("defaulting to USB..."); 369 printf("console keyboard type: USB\n"); 370 ukbd_cnattach(); 371 goto kbd_found; 372 #endif 373 374 /* 375 * No keyboard is found. Just return. 376 */ 377 printf("no console keyboard\n"); 378 return; 379 380 kbd_found:; 381 #if NAKBD + NUKBD + NADBKBD > 0 382 /* 383 * XXX This is a little gross, but we don't get to call 384 * XXX wskbd_cnattach() twice. 385 */ 386 ofkbd_ihandle = kstdin; 387 #if NWSDISPLAY > 0 388 wsdisplay_set_cons_kbd(ofkbd_cngetc, NULL, NULL); 389 #endif 390 #endif 391 } 392 393 /* 394 * Bootstrap console keyboard routines, using OpenFirmware I/O. 395 */ 396 int 397 ofkbd_cngetc(dev_t dev) 398 { 399 u_char c = '\0'; 400 int len; 401 402 do { 403 len = OF_read(ofkbd_ihandle, &c, 1); 404 } while (len != 1); 405 406 return c; 407 } 408 409 /* 410 * Bootstrap console support functions 411 */ 412 413 static int 414 ofwbootcons_cngetc(dev_t dev) 415 { 416 unsigned char ch = '\0'; 417 int l; 418 419 while ((l = OF_read(stdin, &ch, 1)) != 1) 420 if (l != -2 && l != 0) 421 return -1; 422 return ch; 423 } 424 425 static void 426 ofwbootcons_cnputc(dev_t dev, int c) 427 { 428 char ch = c; 429 430 OF_write(stdout, &ch, 1); 431 } 432 433 void 434 ofwoea_consinit(void) 435 { 436 static int initted = 0; 437 438 if (initted) 439 return; 440 441 initted = 1; 442 cninit(); 443 } 444 445 static void 446 ofwoea_bootstrap_console(void) 447 { 448 int node; 449 450 chosen = OF_finddevice("/chosen"); 451 if (chosen == -1) 452 goto nocons; 453 454 if (OF_getprop(chosen, "stdout", &stdout, 455 sizeof(stdout)) != sizeof(stdout)) 456 goto nocons; 457 if (OF_getprop(chosen, "stdin", &stdin, 458 sizeof(stdin)) != sizeof(stdin)) 459 goto nocons; 460 node = OF_instance_to_package(stdout); 461 console_node = node; 462 console_instance = stdout; 463 464 return; 465 nocons: 466 panic("No /chosen could be found!\n"); 467 console_node = -1; 468 return; 469 } 470
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