ofw_consinit.c revision 1.24
1 /* $NetBSD: ofw_consinit.c,v 1.24 2021/03/05 18:10:06 thorpej 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 1.24 2021/03/05 18:10:06 thorpej 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 #include <powerpc/ofw_machdep.h> 58 59 #include <dev/cons.h> 60 #include <dev/ofw/openfirm.h> 61 62 #include <dev/wscons/wsksymvar.h> 63 #include <dev/wscons/wscons_callbacks.h> 64 65 #if NZSC > 0 66 #include <machine/z8530var.h> 67 #endif 68 69 #if (NADB > 0) 70 #include <macppc/dev/adbvar.h> 71 #endif 72 73 #if (NUKBD > 0) 74 #include <dev/usb/ukbdvar.h> 75 struct usb_kbd_ihandles { 76 struct usb_kbd_ihandles *next; 77 int ihandle; 78 }; 79 #endif 80 81 #if (NZSTTY > 0) 82 #include <dev/ic/z8530reg.h> 83 extern struct consdev consdev_zs; 84 #endif 85 86 #if (NPCKBC > 0) 87 #include <dev/isa/isareg.h> 88 #include <dev/ic/i8042reg.h> 89 #include <dev/ic/pckbcvar.h> 90 #endif 91 92 extern int console_node, console_instance; 93 94 int ofkbd_ihandle = -1; 95 96 static void ofwoea_cnprobe_keyboard(void); 97 98 /*#define OFDEBUG*/ 99 100 #ifdef OFDEBUG 101 void ofprint(const char *, ...); 102 103 void ofprint(const char *blah, ...) 104 { 105 va_list va; 106 char buf[256]; 107 int len; 108 109 va_start(va, blah); 110 len = vsnprintf(buf, sizeof(buf), blah, va); 111 va_end(va); 112 OF_write(console_instance, buf, len); 113 } 114 115 #define OFPRINTF ofprint 116 #else 117 #define OFPRINTF while(0) printf 118 #endif 119 120 static bool use_serial_console; 121 static struct consdev *selected_serial_consdev; 122 123 static int (*selected_keyboard)(void); 124 125 /* XXX Gross. */ 126 #if NPCKBC > 0 127 static int 128 ofwoea_pckbd_cnattach(void) 129 { 130 return pckbc_cnattach(&genppc_isa_io_space_tag, IO_KBD, KBCMDP, 131 PCKBC_KBD_SLOT, 0); 132 } 133 #endif 134 135 void 136 ofwoea_cnprobe(void) 137 { 138 char name[32]; 139 140 OFPRINTF("console node: %08x\n", console_node); 141 142 if (console_node == -1) 143 return; 144 145 memset(name, 0, sizeof(name)); 146 if (OF_getprop(console_node, "device_type", name, sizeof(name)) == -1) 147 return; 148 149 OFPRINTF("console type: %s\n", name); 150 151 if (strcmp(name, "serial") == 0) { 152 use_serial_console = true; 153 #ifdef PMAC_G5 154 /* The MMU hasn't been initialized yet, use failsafe for now */ 155 extern struct consdev failsafe_cons; 156 selected_serial_consdev = &failsafe_cons; 157 aprint_verbose("Early G5 console selected\n"); 158 return; 159 #endif /* PMAC_G5 */ 160 161 #if (NZSTTY > 0) && !defined(MAMBO) 162 OF_getprop(console_node, "name", name, sizeof(name)); 163 if (strcmp(name, "ch-a") == 0 || strcmp(name, "ch-b") == 0) { 164 selected_serial_consdev = &consdev_zs; 165 } 166 return; 167 #endif /* NZTTY */ 168 169 /* fallback to OFW boot console (already set) */ 170 return; 171 } 172 173 /* 174 * We're going to use a display console. Probe for the keyboard 175 * we'll use. 176 */ 177 ofwoea_cnprobe_keyboard(); 178 } 179 180 /* 181 * XXX This routine is a complete disaster, filled with platform-specific 182 * XXX stuff. Fix, plz. 183 */ 184 static void 185 ofwoea_cnprobe_keyboard(void) 186 { 187 extern int ofw_stdin; 188 189 int node, kstdin = ofw_stdin; 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 * We must determine which keyboard type we have. 201 */ 202 node = OF_instance_to_package(kstdin); 203 memset(name, 0, sizeof(name)); 204 OF_getprop(node, "name", name, sizeof(name)); 205 if (strcmp(name, "keyboard") != 0) { 206 printf("WARNING: stdin is not a keyboard: %s\n", name); 207 return; 208 } 209 210 memset(name, 0, sizeof(name)); 211 OF_getprop(OF_parent(node), "name", name, sizeof(name)); 212 #if NAKBD > 0 213 if (strcmp(name, "adb") == 0) { 214 printf("console keyboard type: ADB\n"); 215 selected_keyboard = akbd_cnattach; 216 goto kbd_found; 217 } 218 #endif 219 #if NADBKBD > 0 220 if (strcmp(name, "adb") == 0) { 221 printf("console keyboard type: ADB\n"); 222 selected_keyboard = adbkbd_cnattach; 223 goto kbd_found; 224 } 225 #endif 226 #if NPCKBC > 0 227 if (strcmp(name, "isa") == 0) { 228 printf("console keyboard type: PC Keyboard\n"); 229 selected_keyboard = ofwoea_pckbd_cnattach; 230 goto kbd_found; 231 } 232 #endif 233 234 /* 235 * It is not obviously an ADB/PC keyboard. Could be USB, 236 * or ADB on some firmware versions (e.g.: iBook G4) 237 * This is not enough, we have a few more problems: 238 * 239 * (1) The stupid Macintosh firmware uses a 240 * `psuedo-hid' (no typo) or `pseudo-hid', 241 * which apparently merges all keyboards 242 * input into a single input stream. 243 * Because of this, we can't actually 244 * determine which controller or keyboard 245 * is really the console keyboard! 246 * 247 * (2) Even if we could, the keyboard can be USB, 248 * and this requires a lot of the kernel to 249 * be running in order for it to work. 250 * 251 * (3) If the keyboard is behind isa, we don't have enough 252 * kernel setup to use it yet, so punt to the ofroutines. 253 * 254 * So, what we do is this: 255 * 256 * (1) First check for OpenFirmware implementation 257 * that will not let us distinguish between 258 * USB and ADB. In that situation, try attaching 259 * anything as we can, and hope things get better 260 * at autoconfiguration time. 261 * 262 * (2) Assume the keyboard is USB. 263 * Tell the ukbd driver that it is the console. 264 * At autoconfiguration time, it will attach the 265 * first USB keyboard instance as the console 266 * keyboard. 267 * 268 * (3) Until then, so that we have _something_, we 269 * use the OpenFirmware I/O facilities to read 270 * the keyboard. 271 */ 272 273 /* 274 * stdin is /pseudo-hid/keyboard. There is no 275 * `adb-kbd-ihandle or `usb-kbd-ihandles methods 276 * available. Try attaching as ADB. 277 * But only if ADB support is actually present. 278 * 279 * XXX This must be called before pmap_bootstrap(). 280 */ 281 if (strcmp(name, "pseudo-hid") == 0) { 282 int adb_node; 283 284 adb_node = OF_finddevice("/pci/mac-io/via-pmu/adb"); 285 if (adb_node > 0) { 286 printf("ADB support found\n"); 287 #if NAKBD > 0 288 selected_keyboard = akbd_cnattach; 289 #endif 290 #if NADBKBD > 0 291 selected_keyboard = adbkbd_cnattach; 292 #endif 293 } else { 294 /* must be USB */ 295 printf("No ADB support present, assuming USB " 296 "keyboard\n"); 297 #if NUKBD > 0 298 selected_keyboard = ukbd_cnattach; 299 #endif 300 } 301 goto kbd_found; 302 } 303 304 /* 305 * stdin is /psuedo-hid/keyboard. Test `adb-kbd-ihandle and 306 * `usb-kbd-ihandles to figure out the real keyboard(s). 307 * 308 * XXX This must be called before pmap_bootstrap(). 309 */ 310 311 #if NUKBD > 0 312 if (OF_call_method("`usb-kbd-ihandles", kstdin, 0, 1, &ukbds) >= 0 && 313 ukbds != NULL && ukbds->ihandle != 0 && 314 OF_instance_to_package(ukbds->ihandle) != -1) { 315 printf("usb-kbd-ihandles matches\n"); 316 printf("console keyboard type: USB\n"); 317 selected_keyboard = ukbd_cnattach; 318 goto kbd_found; 319 } 320 /* Try old method name. */ 321 if (OF_call_method("`usb-kbd-ihandle", kstdin, 0, 1, &ukbd) >= 0 && 322 ukbd != 0 && 323 OF_instance_to_package(ukbd) != -1) { 324 printf("usb-kbd-ihandle matches\n"); 325 printf("console keyboard type: USB\n"); 326 kstdin = ukbd; 327 selected_keyboard = ukbd_cnattach; 328 goto kbd_found; 329 } 330 #endif 331 332 #if (NAKBD > 0) || (NADBKBD > 0) 333 if (OF_call_method("`adb-kbd-ihandle", kstdin, 0, 1, &akbd) >= 0 && 334 akbd != 0 && 335 OF_instance_to_package(akbd) != -1) { 336 printf("adb-kbd-ihandle matches\n"); 337 printf("console keyboard type: ADB\n"); 338 kstdin = akbd; 339 #if NAKBD > 0 340 selected_keyboard = akbd_cnattach; 341 #endif 342 #if NADBKBD > 0 343 selected_keyboard = adbkbd_cnattach; 344 #endif 345 goto kbd_found; 346 } 347 #endif 348 349 #if NUKBD > 0 350 /* 351 * XXX Old firmware does not have `usb-kbd-ihandles method. Assume 352 * XXX USB keyboard anyway. 353 */ 354 printf("defaulting to USB..."); 355 printf("console keyboard type: USB\n"); 356 selected_keyboard = ukbd_cnattach; 357 goto kbd_found; 358 #endif 359 360 /* 361 * No keyboard is found. Just return. 362 */ 363 printf("no console keyboard\n"); 364 return; 365 366 kbd_found: 367 ofkbd_ihandle = kstdin; 368 } 369 370 /* 371 * Bootstrap console keyboard routines, using OpenFirmware I/O. 372 */ 373 int 374 ofkbd_cngetc(dev_t dev) 375 { 376 u_char c = '\0'; 377 int len; 378 379 KASSERT(ofkbd_ihandle != -1); 380 381 do { 382 len = OF_read(ofkbd_ihandle, &c, 1); 383 } while (len != 1); 384 385 return c; 386 } 387 388 void 389 cninit(void) 390 { 391 if (use_serial_console) { 392 if (selected_serial_consdev != NULL) { 393 cn_tab = selected_serial_consdev; 394 (*cn_tab->cn_probe)(cn_tab); 395 (*cn_tab->cn_init)(cn_tab); 396 } 397 return; 398 } 399 400 #if NWSDISPLAY > 0 401 rascons_cnattach(); 402 #endif 403 if (selected_keyboard != NULL) { 404 (*selected_keyboard)(); 405 406 #if NWSDISPLAY > 0 407 /* 408 * XXX This is a little gross, but we don't get to call 409 * XXX wskbd_cnattach() twice. 410 */ 411 wsdisplay_set_cons_kbd(ofkbd_cngetc, NULL, NULL); 412 #endif 413 } 414 } 415 416 void 417 ofwoea_consinit(void) 418 { 419 static int initted = 0; 420 421 if (initted) 422 return; 423 424 initted = 1; 425 cninit(); 426 } 427
Indexes created Wed Oct 15 16:09:53 GMT 2025