/* $NetBSD: ofw_consinit.c,v 1.17.18.1 2020/04/21 18:42:11 martin Exp $ */ /*- * Copyright (c) 2007 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Tim Rightnour * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include __KERNEL_RCSID(0, "$NetBSD: ofw_consinit.c,v 1.17.18.1 2020/04/21 18:42:11 martin Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include "akbd.h" #include "adbkbd.h" #include "wsdisplay.h" #include "ofb.h" #include "isa.h" #include "zsc.h" #if NZSC > 0 #include #endif #include "adb.h" #if (NADB > 0) #include #endif #include "ukbd.h" #if (NUKBD > 0) #include struct usb_kbd_ihandles { struct usb_kbd_ihandles *next; int ihandle; }; #endif #include "zstty.h" #if (NZSTTY > 0) #include extern struct consdev consdev_zs; #endif #include "pckbc.h" #if (NPCKBC > 0) #include #include #include #endif int console_node = 0, console_instance = 0; int chosen, stdin, stdout; int ofkbd_ihandle; static void cninit_kd(void); static void ofwoea_bootstrap_console(void); static int ofwbootcons_cngetc(dev_t); static void ofwbootcons_cnputc(dev_t, int); /*#define OFDEBUG*/ struct consdev consdev_ofwbootcons = { NULL, NULL, ofwbootcons_cngetc, ofwbootcons_cnputc, nullcnpollc, NULL, NULL, NULL, NODEV, CN_INTERNAL, }; #ifdef OFDEBUG void ofprint(const char *, ...); void ofprint(const char *blah, ...) { va_list va; char buf[256]; int len; va_start(va, blah); len = vsnprintf(buf, sizeof(buf), blah, va); va_end(va); OF_write(console_instance, buf, len); } #define OFPRINTF ofprint #else #define OFPRINTF while(0) printf #endif void cninit(void) { char name[32]; ofwoea_bootstrap_console(); OFPRINTF("console node: %08x\n", console_node); if (console_node == -1) goto nocons; memset(name, 0, sizeof(name)); if (OF_getprop(console_node, "device_type", name, sizeof(name)) == -1) goto nocons; OFPRINTF("console type: %s\n", name); if (strcmp(name, "serial") == 0) { struct consdev *cp; #ifdef PMAC_G5 /* The MMU hasn't been initialized yet, use failsafe for now */ extern struct consdev failsafe_cons; cp = &failsafe_cons; cn_tab = cp; (*cp->cn_probe)(cp); (*cp->cn_init)(cp); aprint_verbose("Early G5 console initialized\n"); return; #endif /* PMAC_G5 */ #if (NZSTTY > 0) && !defined(MAMBO) OF_getprop(console_node, "name", name, sizeof(name)); if (strcmp(name, "ch-a") == 0 || strcmp(name, "ch-b") == 0) { cp = &consdev_zs; (*cp->cn_probe)(cp); (*cp->cn_init)(cp); cn_tab = cp; } return; #endif /* NZTTY */ /* fallback to OFW boot console */ cp = &consdev_ofwbootcons; cn_tab = cp; return; } else cninit_kd(); nocons: return; } static void cninit_kd(void) { int kstdin, node; char name[16]; #if (NAKBD > 0) || (NADBKBD > 0) int akbd; #endif #if NUKBD > 0 struct usb_kbd_ihandles *ukbds; int ukbd; #endif /* * Attach the console output now (so we can see debugging messages, * if any). */ #if NWSDISPLAY > 0 rascons_cnattach(); #endif /* * We must determine which keyboard type we have. */ if (OF_getprop(chosen, "stdin", &kstdin, sizeof(kstdin)) != sizeof(kstdin)) { printf("WARNING: no `stdin' property in /chosen\n"); return; } node = OF_instance_to_package(kstdin); memset(name, 0, sizeof(name)); OF_getprop(node, "name", name, sizeof(name)); if (strcmp(name, "keyboard") != 0) { printf("WARNING: stdin is not a keyboard: %s\n", name); return; } memset(name, 0, sizeof(name)); OF_getprop(OF_parent(node), "name", name, sizeof(name)); #if NAKBD > 0 if (strcmp(name, "adb") == 0) { printf("console keyboard type: ADB\n"); akbd_cnattach(); goto kbd_found; } #endif #if NADBKBD > 0 if (strcmp(name, "adb") == 0) { printf("console keyboard type: ADB\n"); adbkbd_cnattach(); goto kbd_found; } #endif #if NPCKBC > 0 if (strcmp(name, "isa") == 0) { printf("console keyboard type: PC Keyboard\n"); pckbc_cnattach(&genppc_isa_io_space_tag, IO_KBD, KBCMDP, PCKBC_KBD_SLOT, 0); goto kbd_found; } #endif /* * It is not obviously an ADB/PC keyboard. Could be USB, * or ADB on some firmware versions (e.g.: iBook G4) * This is not enough, we have a few more problems: * * (1) The stupid Macintosh firmware uses a * `psuedo-hid' (no typo) or `pseudo-hid', * which apparently merges all keyboards * input into a single input stream. * Because of this, we can't actually * determine which controller or keyboard * is really the console keyboard! * * (2) Even if we could, the keyboard can be USB, * and this requires a lot of the kernel to * be running in order for it to work. * * (3) If the keyboard is behind isa, we don't have enough * kernel setup to use it yet, so punt to the ofroutines. * * So, what we do is this: * * (1) First check for OpenFirmware implementation * that will not let us distinguish between * USB and ADB. In that situation, try attaching * anything as we can, and hope things get better * at autoconfiguration time. * * (2) Assume the keyboard is USB. * Tell the ukbd driver that it is the console. * At autoconfiguration time, it will attach the * first USB keyboard instance as the console * keyboard. * * (3) Until then, so that we have _something_, we * use the OpenFirmware I/O facilities to read * the keyboard. */ /* * stdin is /pseudo-hid/keyboard. There is no * `adb-kbd-ihandle or `usb-kbd-ihandles methods * available. Try attaching as ADB. * But only if ADB support is actually present. * * XXX This must be called before pmap_bootstrap(). */ if (strcmp(name, "pseudo-hid") == 0) { int adb_node; adb_node = OF_finddevice("/pci/mac-io/via-pmu/adb"); if (adb_node > 0) { printf("ADB support found\n"); #if NAKBD > 0 akbd_cnattach(); #endif #if NADBKBD > 0 adbkbd_cnattach(); #endif } else { /* must be USB */ printf("No ADB support present, assuming USB " "keyboard\n"); #if NUKBD > 0 ukbd_cnattach(); #endif } goto kbd_found; } /* * stdin is /psuedo-hid/keyboard. Test `adb-kbd-ihandle and * `usb-kbd-ihandles to figure out the real keyboard(s). * * XXX This must be called before pmap_bootstrap(). */ #if NUKBD > 0 if (OF_call_method("`usb-kbd-ihandles", stdin, 0, 1, &ukbds) >= 0 && ukbds != NULL && ukbds->ihandle != 0 && OF_instance_to_package(ukbds->ihandle) != -1) { printf("usb-kbd-ihandles matches\n"); printf("console keyboard type: USB\n"); ukbd_cnattach(); goto kbd_found; } /* Try old method name. */ if (OF_call_method("`usb-kbd-ihandle", kstdin, 0, 1, &ukbd) >= 0 && ukbd != 0 && OF_instance_to_package(ukbd) != -1) { printf("usb-kbd-ihandle matches\n"); printf("console keyboard type: USB\n"); kstdin = ukbd; ukbd_cnattach(); goto kbd_found; } #endif #if (NAKBD > 0) || (NADBKBD > 0) if (OF_call_method("`adb-kbd-ihandle", kstdin, 0, 1, &akbd) >= 0 && akbd != 0 && OF_instance_to_package(akbd) != -1) { printf("adb-kbd-ihandle matches\n"); printf("console keyboard type: ADB\n"); kstdin = akbd; #if NAKBD > 0 akbd_cnattach(); #endif #if NADBKBD > 0 adbkbd_cnattach(); #endif goto kbd_found; } #endif #if NUKBD > 0 /* * XXX Old firmware does not have `usb-kbd-ihandles method. Assume * XXX USB keyboard anyway. */ printf("defaulting to USB..."); printf("console keyboard type: USB\n"); ukbd_cnattach(); goto kbd_found; #endif /* * No keyboard is found. Just return. */ printf("no console keyboard\n"); return; kbd_found:; #if NAKBD + NUKBD + NADBKBD + NPCKBC > 0 /* * XXX This is a little gross, but we don't get to call * XXX wskbd_cnattach() twice. */ ofkbd_ihandle = kstdin; #if NWSDISPLAY > 0 wsdisplay_set_cons_kbd(ofkbd_cngetc, NULL, NULL); #endif #endif } /* * Bootstrap console keyboard routines, using OpenFirmware I/O. */ int ofkbd_cngetc(dev_t dev) { u_char c = '\0'; int len; do { len = OF_read(ofkbd_ihandle, &c, 1); } while (len != 1); return c; } /* * Bootstrap console support functions */ static int ofwbootcons_cngetc(dev_t dev) { unsigned char ch = '\0'; int l; while ((l = OF_read(stdin, &ch, 1)) != 1) if (l != -2 && l != 0) return -1; return ch; } static void ofwbootcons_cnputc(dev_t dev, int c) { char ch = c; OF_write(stdout, &ch, 1); } void ofwoea_consinit(void) { static int initted = 0; if (initted) return; initted = 1; cninit(); } static void ofwoea_bootstrap_console(void) { int node; chosen = OF_finddevice("/chosen"); if (chosen == -1) goto nocons; if (OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)) != sizeof(stdout)) goto nocons; if (OF_getprop(chosen, "stdin", &stdin, sizeof(stdin)) != sizeof(stdin)) goto nocons; if (stdout == 0) { /* screen should be console, but it is not open */ stdout = OF_open("screen"); } node = OF_instance_to_package(stdout); console_node = node; console_instance = stdout; return; nocons: panic("No /chosen could be found!\n"); console_node = -1; return; }