ofw_consinit.c revision 1.23
1 /* $NetBSD: ofw_consinit.c,v 1.23 2021/02/19 18:05:42 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 1.23 2021/02/19 18:05:42 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; 95 96 static void cninit_kd(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 void 121 cninit(void) 122 { 123 char name[32]; 124 125 OFPRINTF("console node: %08x\n", console_node); 126 127 if (console_node == -1) 128 goto nocons; 129 130 memset(name, 0, sizeof(name)); 131 if (OF_getprop(console_node, "device_type", name, sizeof(name)) == -1) 132 goto nocons; 133 134 OFPRINTF("console type: %s\n", name); 135 136 if (strcmp(name, "serial") == 0) { 137 #ifdef PMAC_G5 138 /* The MMU hasn't been initialized yet, use failsafe for now */ 139 extern struct consdev failsafe_cons; 140 cn_tab = &failsafe_cons; 141 (*cn_tab->cn_probe)(cn_tab); 142 (*cn_tab->cn_init)(cn_tab); 143 aprint_verbose("Early G5 console initialized\n"); 144 return; 145 #endif /* PMAC_G5 */ 146 147 #if (NZSTTY > 0) && !defined(MAMBO) 148 OF_getprop(console_node, "name", name, sizeof(name)); 149 if (strcmp(name, "ch-a") == 0 || strcmp(name, "ch-b") == 0) { 150 cn_tab = &consdev_zs; 151 (*cn_tab->cn_probe)(cn_tab); 152 (*cn_tab->cn_init)(cn_tab); 153 } 154 return; 155 #endif /* NZTTY */ 156 157 /* fallback to OFW boot console (already set) */ 158 return; 159 } 160 else 161 cninit_kd(); 162 nocons: 163 return; 164 } 165 166 167 static void 168 cninit_kd(void) 169 { 170 int kstdin, node; 171 char name[16]; 172 #if (NAKBD > 0) || (NADBKBD > 0) 173 int akbd; 174 #endif 175 #if NUKBD > 0 176 struct usb_kbd_ihandles *ukbds; 177 int ukbd; 178 #endif 179 180 /* 181 * Attach the console output now (so we can see debugging messages, 182 * if any). 183 */ 184 #if NWSDISPLAY > 0 185 rascons_cnattach(); 186 #endif 187 188 /* 189 * We must determine which keyboard type we have. 190 */ 191 if (OF_getprop(ofw_chosen, "stdin", &kstdin, sizeof(kstdin)) 192 != sizeof(kstdin)) { 193 printf("WARNING: no `stdin' property in /chosen\n"); 194 return; 195 } 196 197 node = OF_instance_to_package(kstdin); 198 memset(name, 0, sizeof(name)); 199 OF_getprop(node, "name", name, sizeof(name)); 200 if (strcmp(name, "keyboard") != 0) { 201 printf("WARNING: stdin is not a keyboard: %s\n", name); 202 return; 203 } 204 205 memset(name, 0, sizeof(name)); 206 OF_getprop(OF_parent(node), "name", name, sizeof(name)); 207 #if NAKBD > 0 208 if (strcmp(name, "adb") == 0) { 209 printf("console keyboard type: ADB\n"); 210 akbd_cnattach(); 211 goto kbd_found; 212 } 213 #endif 214 #if NADBKBD > 0 215 if (strcmp(name, "adb") == 0) { 216 printf("console keyboard type: ADB\n"); 217 adbkbd_cnattach(); 218 goto kbd_found; 219 } 220 #endif 221 #if NPCKBC > 0 222 if (strcmp(name, "isa") == 0) { 223 printf("console keyboard type: PC Keyboard\n"); 224 pckbc_cnattach(&genppc_isa_io_space_tag, IO_KBD, KBCMDP, 225 PCKBC_KBD_SLOT, 0); 226 goto kbd_found; 227 } 228 #endif 229 230 /* 231 * It is not obviously an ADB/PC keyboard. Could be USB, 232 * or ADB on some firmware versions (e.g.: iBook G4) 233 * This is not enough, we have a few more problems: 234 * 235 * (1) The stupid Macintosh firmware uses a 236 * `psuedo-hid' (no typo) or `pseudo-hid', 237 * which apparently merges all keyboards 238 * input into a single input stream. 239 * Because of this, we can't actually 240 * determine which controller or keyboard 241 * is really the console keyboard! 242 * 243 * (2) Even if we could, the keyboard can be USB, 244 * and this requires a lot of the kernel to 245 * be running in order for it to work. 246 * 247 * (3) If the keyboard is behind isa, we don't have enough 248 * kernel setup to use it yet, so punt to the ofroutines. 249 * 250 * So, what we do is this: 251 * 252 * (1) First check for OpenFirmware implementation 253 * that will not let us distinguish between 254 * USB and ADB. In that situation, try attaching 255 * anything as we can, and hope things get better 256 * at autoconfiguration time. 257 * 258 * (2) Assume the keyboard is USB. 259 * Tell the ukbd driver that it is the console. 260 * At autoconfiguration time, it will attach the 261 * first USB keyboard instance as the console 262 * keyboard. 263 * 264 * (3) Until then, so that we have _something_, we 265 * use the OpenFirmware I/O facilities to read 266 * the keyboard. 267 */ 268 269 /* 270 * stdin is /pseudo-hid/keyboard. There is no 271 * `adb-kbd-ihandle or `usb-kbd-ihandles methods 272 * available. Try attaching as ADB. 273 * But only if ADB support is actually present. 274 * 275 * XXX This must be called before pmap_bootstrap(). 276 */ 277 if (strcmp(name, "pseudo-hid") == 0) { 278 int adb_node; 279 280 adb_node = OF_finddevice("/pci/mac-io/via-pmu/adb"); 281 if (adb_node > 0) { 282 printf("ADB support found\n"); 283 #if NAKBD > 0 284 akbd_cnattach(); 285 #endif 286 #if NADBKBD > 0 287 adbkbd_cnattach(); 288 #endif 289 } else { 290 /* must be USB */ 291 printf("No ADB support present, assuming USB " 292 "keyboard\n"); 293 #if NUKBD > 0 294 ukbd_cnattach(); 295 #endif 296 } 297 goto kbd_found; 298 } 299 300 /* 301 * stdin is /psuedo-hid/keyboard. Test `adb-kbd-ihandle and 302 * `usb-kbd-ihandles to figure out the real keyboard(s). 303 * 304 * XXX This must be called before pmap_bootstrap(). 305 */ 306 307 #if NUKBD > 0 308 if (OF_call_method("`usb-kbd-ihandles", kstdin, 0, 1, &ukbds) >= 0 && 309 ukbds != NULL && ukbds->ihandle != 0 && 310 OF_instance_to_package(ukbds->ihandle) != -1) { 311 printf("usb-kbd-ihandles matches\n"); 312 printf("console keyboard type: USB\n"); 313 ukbd_cnattach(); 314 goto kbd_found; 315 } 316 /* Try old method name. */ 317 if (OF_call_method("`usb-kbd-ihandle", kstdin, 0, 1, &ukbd) >= 0 && 318 ukbd != 0 && 319 OF_instance_to_package(ukbd) != -1) { 320 printf("usb-kbd-ihandle matches\n"); 321 printf("console keyboard type: USB\n"); 322 kstdin = ukbd; 323 ukbd_cnattach(); 324 goto kbd_found; 325 } 326 #endif 327 328 #if (NAKBD > 0) || (NADBKBD > 0) 329 if (OF_call_method("`adb-kbd-ihandle", kstdin, 0, 1, &akbd) >= 0 && 330 akbd != 0 && 331 OF_instance_to_package(akbd) != -1) { 332 printf("adb-kbd-ihandle matches\n"); 333 printf("console keyboard type: ADB\n"); 334 kstdin = akbd; 335 #if NAKBD > 0 336 akbd_cnattach(); 337 #endif 338 #if NADBKBD > 0 339 adbkbd_cnattach(); 340 #endif 341 goto kbd_found; 342 } 343 #endif 344 345 #if NUKBD > 0 346 /* 347 * XXX Old firmware does not have `usb-kbd-ihandles method. Assume 348 * XXX USB keyboard anyway. 349 */ 350 printf("defaulting to USB..."); 351 printf("console keyboard type: USB\n"); 352 ukbd_cnattach(); 353 goto kbd_found; 354 #endif 355 356 /* 357 * No keyboard is found. Just return. 358 */ 359 printf("no console keyboard\n"); 360 return; 361 362 kbd_found:; 363 #if NAKBD + NUKBD + NADBKBD + NPCKBC > 0 364 /* 365 * XXX This is a little gross, but we don't get to call 366 * XXX wskbd_cnattach() twice. 367 */ 368 ofkbd_ihandle = kstdin; 369 #if NWSDISPLAY > 0 370 wsdisplay_set_cons_kbd(ofkbd_cngetc, NULL, NULL); 371 #endif 372 #endif 373 } 374 375 /* 376 * Bootstrap console keyboard routines, using OpenFirmware I/O. 377 */ 378 int 379 ofkbd_cngetc(dev_t dev) 380 { 381 u_char c = '\0'; 382 int len; 383 384 do { 385 len = OF_read(ofkbd_ihandle, &c, 1); 386 } while (len != 1); 387 388 return c; 389 } 390 391 void 392 ofwoea_consinit(void) 393 { 394 static int initted = 0; 395 396 if (initted) 397 return; 398 399 initted = 1; 400 cninit(); 401 } 402
Indexes created Sun Oct 19 21:10:07 GMT 2025