ofw_consinit.c revision 1.19
1 /* $NetBSD: ofw_consinit.c,v 1.19 2020/07/06 09:34:17 rin 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: ofw_consinit.c,v 1.19 2020/07/06 09:34:17 rin Exp $"); 34 35 #include "adb.h" 36 #include "adbkbd.h" 37 #include "akbd.h" 38 #include "isa.h" 39 #include "ofb.h" 40 #include "pckbc.h" 41 #include "ukbd.h" 42 #include "wsdisplay.h" 43 #include "zsc.h" 44 #include "zstty.h" 45 46 #include <sys/param.h> 47 #include <sys/buf.h> 48 #include <sys/tty.h> 49 50 #include <prop/proplib.h> 51 52 #include <machine/autoconf.h> 53 #include <machine/trap.h> 54 #include <sys/bus.h> 55 56 #include <powerpc/ofw_cons.h> 57 58 #include <dev/cons.h> 59 #include <dev/ofw/openfirm.h> 60 61 #include <dev/wscons/wsksymvar.h> 62 #include <dev/wscons/wscons_callbacks.h> 63 64 #if NZSC > 0 65 #include <machine/z8530var.h> 66 #endif 67 68 #if (NADB > 0) 69 #include <macppc/dev/adbvar.h> 70 #endif 71 72 #if (NUKBD > 0) 73 #include <dev/usb/ukbdvar.h> 74 struct usb_kbd_ihandles { 75 struct usb_kbd_ihandles *next; 76 int ihandle; 77 }; 78 #endif 79 80 #if (NZSTTY > 0) 81 #include <dev/ic/z8530reg.h> 82 extern struct consdev consdev_zs; 83 #endif 84 85 #if (NPCKBC > 0) 86 #include <dev/isa/isareg.h> 87 #include <dev/ic/i8042reg.h> 88 #include <dev/ic/pckbcvar.h> 89 #endif 90 91 int console_node = 0, console_instance = 0; 92 93 int chosen, stdin, stdout; 94 int ofkbd_ihandle; 95 96 static void cninit_kd(void); 97 static void ofwoea_bootstrap_console(void); 98 static int ofwbootcons_cngetc(dev_t); 99 static void ofwbootcons_cnputc(dev_t, int); 100 101 /*#define OFDEBUG*/ 102 103 struct consdev consdev_ofwbootcons = { 104 NULL, NULL, 105 ofwbootcons_cngetc, 106 ofwbootcons_cnputc, 107 nullcnpollc, 108 NULL, NULL, NULL, NODEV, CN_INTERNAL, 109 }; 110 111 #ifdef OFDEBUG 112 void ofprint(const char *, ...); 113 114 void ofprint(const char *blah, ...) 115 { 116 va_list va; 117 char buf[256]; 118 int len; 119 120 va_start(va, blah); 121 len = vsnprintf(buf, sizeof(buf), blah, va); 122 va_end(va); 123 OF_write(console_instance, buf, len); 124 } 125 126 #define OFPRINTF ofprint 127 #else 128 #define OFPRINTF while(0) printf 129 #endif 130 131 void 132 cninit(void) 133 { 134 char name[32]; 135 136 ofwoea_bootstrap_console(); 137 138 OFPRINTF("console node: %08x\n", console_node); 139 140 if (console_node == -1) 141 goto nocons; 142 143 memset(name, 0, sizeof(name)); 144 if (OF_getprop(console_node, "device_type", name, sizeof(name)) == -1) 145 goto nocons; 146 147 OFPRINTF("console type: %s\n", name); 148 149 if (strcmp(name, "serial") == 0) { 150 struct consdev *cp; 151 152 #ifdef PMAC_G5 153 /* The MMU hasn't been initialized yet, use failsafe for now */ 154 extern struct consdev failsafe_cons; 155 cp = &failsafe_cons; 156 cn_tab = cp; 157 (*cp->cn_probe)(cp); 158 (*cp->cn_init)(cp); 159 aprint_verbose("Early G5 console initialized\n"); 160 return; 161 #endif /* PMAC_G5 */ 162 163 #if (NZSTTY > 0) && !defined(MAMBO) 164 OF_getprop(console_node, "name", name, sizeof(name)); 165 if (strcmp(name, "ch-a") == 0 || strcmp(name, "ch-b") == 0) { 166 cp = &consdev_zs; 167 (*cp->cn_probe)(cp); 168 (*cp->cn_init)(cp); 169 cn_tab = cp; 170 } 171 return; 172 #endif /* NZTTY */ 173 174 /* fallback to OFW boot console */ 175 cp = &consdev_ofwbootcons; 176 cn_tab = cp; 177 return; 178 } 179 else 180 cninit_kd(); 181 nocons: 182 return; 183 } 184 185 186 static void 187 cninit_kd(void) 188 { 189 int kstdin, node; 190 char name[16]; 191 #if (NAKBD > 0) || (NADBKBD > 0) 192 int akbd; 193 #endif 194 #if NUKBD > 0 195 struct usb_kbd_ihandles *ukbds; 196 int ukbd; 197 #endif 198 199 /* 200 * Attach the console output now (so we can see debugging messages, 201 * if any). 202 */ 203 #if NWSDISPLAY > 0 204 rascons_cnattach(); 205 #endif 206 207 /* 208 * We must determine which keyboard type we have. 209 */ 210 if (OF_getprop(chosen, "stdin", &kstdin, sizeof(kstdin)) 211 != sizeof(kstdin)) { 212 printf("WARNING: no `stdin' property in /chosen\n"); 213 return; 214 } 215 216 node = OF_instance_to_package(kstdin); 217 memset(name, 0, sizeof(name)); 218 OF_getprop(node, "name", name, sizeof(name)); 219 if (strcmp(name, "keyboard") != 0) { 220 printf("WARNING: stdin is not a keyboard: %s\n", name); 221 return; 222 } 223 224 memset(name, 0, sizeof(name)); 225 OF_getprop(OF_parent(node), "name", name, sizeof(name)); 226 #if NAKBD > 0 227 if (strcmp(name, "adb") == 0) { 228 printf("console keyboard type: ADB\n"); 229 akbd_cnattach(); 230 goto kbd_found; 231 } 232 #endif 233 #if NADBKBD > 0 234 if (strcmp(name, "adb") == 0) { 235 printf("console keyboard type: ADB\n"); 236 adbkbd_cnattach(); 237 goto kbd_found; 238 } 239 #endif 240 #if NPCKBC > 0 241 if (strcmp(name, "isa") == 0) { 242 printf("console keyboard type: PC Keyboard\n"); 243 pckbc_cnattach(&genppc_isa_io_space_tag, IO_KBD, KBCMDP, 244 PCKBC_KBD_SLOT, 0); 245 goto kbd_found; 246 } 247 #endif 248 249 /* 250 * It is not obviously an ADB/PC keyboard. Could be USB, 251 * or ADB on some firmware versions (e.g.: iBook G4) 252 * This is not enough, we have a few more problems: 253 * 254 * (1) The stupid Macintosh firmware uses a 255 * `psuedo-hid' (no typo) or `pseudo-hid', 256 * which apparently merges all keyboards 257 * input into a single input stream. 258 * Because of this, we can't actually 259 * determine which controller or keyboard 260 * is really the console keyboard! 261 * 262 * (2) Even if we could, the keyboard can be USB, 263 * and this requires a lot of the kernel to 264 * be running in order for it to work. 265 * 266 * (3) If the keyboard is behind isa, we don't have enough 267 * kernel setup to use it yet, so punt to the ofroutines. 268 * 269 * So, what we do is this: 270 * 271 * (1) First check for OpenFirmware implementation 272 * that will not let us distinguish between 273 * USB and ADB. In that situation, try attaching 274 * anything as we can, and hope things get better 275 * at autoconfiguration time. 276 * 277 * (2) Assume the keyboard is USB. 278 * Tell the ukbd driver that it is the console. 279 * At autoconfiguration time, it will attach the 280 * first USB keyboard instance as the console 281 * keyboard. 282 * 283 * (3) Until then, so that we have _something_, we 284 * use the OpenFirmware I/O facilities to read 285 * the keyboard. 286 */ 287 288 /* 289 * stdin is /pseudo-hid/keyboard. There is no 290 * `adb-kbd-ihandle or `usb-kbd-ihandles methods 291 * available. Try attaching as ADB. 292 * But only if ADB support is actually present. 293 * 294 * XXX This must be called before pmap_bootstrap(). 295 */ 296 if (strcmp(name, "pseudo-hid") == 0) { 297 int adb_node; 298 299 adb_node = OF_finddevice("/pci/mac-io/via-pmu/adb"); 300 if (adb_node > 0) { 301 printf("ADB support found\n"); 302 #if NAKBD > 0 303 akbd_cnattach(); 304 #endif 305 #if NADBKBD > 0 306 adbkbd_cnattach(); 307 #endif 308 } else { 309 /* must be USB */ 310 printf("No ADB support present, assuming USB " 311 "keyboard\n"); 312 #if NUKBD > 0 313 ukbd_cnattach(); 314 #endif 315 } 316 goto kbd_found; 317 } 318 319 /* 320 * stdin is /psuedo-hid/keyboard. Test `adb-kbd-ihandle and 321 * `usb-kbd-ihandles to figure out the real keyboard(s). 322 * 323 * XXX This must be called before pmap_bootstrap(). 324 */ 325 326 #if NUKBD > 0 327 if (OF_call_method("`usb-kbd-ihandles", stdin, 0, 1, &ukbds) >= 0 && 328 ukbds != NULL && ukbds->ihandle != 0 && 329 OF_instance_to_package(ukbds->ihandle) != -1) { 330 printf("usb-kbd-ihandles matches\n"); 331 printf("console keyboard type: USB\n"); 332 ukbd_cnattach(); 333 goto kbd_found; 334 } 335 /* Try old method name. */ 336 if (OF_call_method("`usb-kbd-ihandle", kstdin, 0, 1, &ukbd) >= 0 && 337 ukbd != 0 && 338 OF_instance_to_package(ukbd) != -1) { 339 printf("usb-kbd-ihandle matches\n"); 340 printf("console keyboard type: USB\n"); 341 kstdin = ukbd; 342 ukbd_cnattach(); 343 goto kbd_found; 344 } 345 #endif 346 347 #if (NAKBD > 0) || (NADBKBD > 0) 348 if (OF_call_method("`adb-kbd-ihandle", kstdin, 0, 1, &akbd) >= 0 && 349 akbd != 0 && 350 OF_instance_to_package(akbd) != -1) { 351 printf("adb-kbd-ihandle matches\n"); 352 printf("console keyboard type: ADB\n"); 353 kstdin = akbd; 354 #if NAKBD > 0 355 akbd_cnattach(); 356 #endif 357 #if NADBKBD > 0 358 adbkbd_cnattach(); 359 #endif 360 goto kbd_found; 361 } 362 #endif 363 364 #if NUKBD > 0 365 /* 366 * XXX Old firmware does not have `usb-kbd-ihandles method. Assume 367 * XXX USB keyboard anyway. 368 */ 369 printf("defaulting to USB..."); 370 printf("console keyboard type: USB\n"); 371 ukbd_cnattach(); 372 goto kbd_found; 373 #endif 374 375 /* 376 * No keyboard is found. Just return. 377 */ 378 printf("no console keyboard\n"); 379 return; 380 381 kbd_found:; 382 #if NAKBD + NUKBD + NADBKBD + NPCKBC > 0 383 /* 384 * XXX This is a little gross, but we don't get to call 385 * XXX wskbd_cnattach() twice. 386 */ 387 ofkbd_ihandle = kstdin; 388 #if NWSDISPLAY > 0 389 wsdisplay_set_cons_kbd(ofkbd_cngetc, NULL, NULL); 390 #endif 391 #endif 392 } 393 394 /* 395 * Bootstrap console keyboard routines, using OpenFirmware I/O. 396 */ 397 int 398 ofkbd_cngetc(dev_t dev) 399 { 400 u_char c = '\0'; 401 int len; 402 403 do { 404 len = OF_read(ofkbd_ihandle, &c, 1); 405 } while (len != 1); 406 407 return c; 408 } 409 410 /* 411 * Bootstrap console support functions 412 */ 413 414 static int 415 ofwbootcons_cngetc(dev_t dev) 416 { 417 unsigned char ch = '\0'; 418 int l; 419 420 while ((l = OF_read(stdin, &ch, 1)) != 1) 421 if (l != -2 && l != 0) 422 return -1; 423 return ch; 424 } 425 426 static void 427 ofwbootcons_cnputc(dev_t dev, int c) 428 { 429 char ch = c; 430 431 OF_write(stdout, &ch, 1); 432 } 433 434 void 435 ofwoea_consinit(void) 436 { 437 static int initted = 0; 438 439 if (initted) 440 return; 441 442 initted = 1; 443 cninit(); 444 } 445 446 static void 447 ofwoea_bootstrap_console(void) 448 { 449 int node; 450 451 chosen = OF_finddevice("/chosen"); 452 if (chosen == -1) 453 goto nocons; 454 455 if (OF_getprop(chosen, "stdout", &stdout, 456 sizeof(stdout)) != sizeof(stdout)) 457 goto nocons; 458 if (OF_getprop(chosen, "stdin", &stdin, 459 sizeof(stdin)) != sizeof(stdin)) 460 goto nocons; 461 if (stdout == 0) { 462 /* screen should be console, but it is not open */ 463 stdout = OF_open("screen"); 464 } 465 node = OF_instance_to_package(stdout); 466 console_node = node; 467 console_instance = stdout; 468 469 return; 470 nocons: 471 panic("No /chosen could be found!\n"); 472 console_node = -1; 473 return; 474 } 475
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