/* $OpenBSD: consinit.c,v 1.17 2017/12/30 20:46:59 guenther Exp $ */ /* $NetBSD: consinit.c,v 1.9 2000/10/20 05:32:35 mrg Exp $ */ /*- * Copyright (c) 1999 Eduardo E. Horvath * All rights reserved. * * 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. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 "pcons.h" #include "ukbd.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include cons_decl(prom_); int stdin = 0, stdout = 0; /* * The console is set to this one initially, * which lets us use the PROM until consinit() * is called to select a real console. */ struct consdev consdev_prom = { prom_cnprobe, prom_cninit, prom_cngetc, prom_cnputc, prom_cnpollc, NULL }; /* * The console table pointer is statically initialized * to point to the PROM (output only) table, so that * early calls to printf will work. */ struct consdev *cn_tab = &consdev_prom; void prom_cnprobe(struct consdev *cd) { #if NPCONS > 0 int maj; for (maj = 0; maj < nchrdev; maj++) if (cdevsw[maj].d_open == pconsopen) break; cd->cn_dev = makedev(maj, 0); cd->cn_pri = CN_MIDPRI; #endif } int prom_cngetc(dev_t dev) { unsigned char ch = '\0'; int l; #ifdef DDB static int nplus = 0; #endif while ((l = OF_read(stdin, &ch, 1)) != 1) /* void */; #ifdef DDB if (ch == '+') { if (nplus++ > 3) db_enter(); } else nplus = 0; #endif if (ch == '\r') ch = '\n'; if (ch == '\b') ch = '\177'; return ch; } void prom_cninit(struct consdev *cn) { if (!stdin) stdin = OF_stdin(); if (!stdout) stdout = OF_stdout(); } /* * PROM console output putchar. */ void prom_cnputc(dev_t dev, int c) { int s; char c0 = (c & 0x7f); #if 0 if (!stdout) stdout = OF_stdout(); #endif s = splhigh(); OF_write(stdout, &c0, 1); splx(s); } void prom_cnpollc(dev_t dev, int on) { if (on) { /* Entering debugger. */ fb_unblank(); } else { /* Resuming kernel. */ } #if NPCONS > 0 pcons_cnpollc(dev, on); #endif } /*****************************************************************/ #ifdef DEBUG #define DBPRINT(x) prom_printf x #else #define DBPRINT(x) #endif /* * This function replaces sys/dev/cninit.c * Determine which device is the console using * the PROM "input source" and "output sink". */ void consinit(void) { register int chosen; char buffer[128]; extern int stdinnode, fbnode; char *consname = "unknown"; DBPRINT(("consinit()\r\n")); if (cn_tab != &consdev_prom) return; DBPRINT(("setting up stdin\r\n")); chosen = OF_finddevice("/chosen"); OF_getprop(chosen, "stdin", &stdin, sizeof(stdin)); DBPRINT(("stdin instance = %x\r\n", stdin)); if ((stdinnode = OF_instance_to_package(stdin)) == 0) { printf("WARNING: no PROM stdin\n"); } #if NUKBD > 0 else { if (OF_getprop(stdinnode, "compatible", buffer, sizeof(buffer)) != -1 && strncmp("usb", buffer, 3) == 0) ukbd_cnattach(); } #endif DBPRINT(("setting up stdout\r\n")); OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)); DBPRINT(("stdout instance = %x\r\n", stdout)); if ((fbnode = OF_instance_to_package(stdout)) == 0) printf("WARNING: no PROM stdout\n"); DBPRINT(("stdout package = %x\r\n", fbnode)); if (stdinnode && (OF_getproplen(stdinnode,"keyboard") >= 0)) { consname = "keyboard/display"; } else if (fbnode && (OF_instance_to_path(stdin, buffer, sizeof(buffer)) >= 0)) { consname = buffer; } printf("console is %s\n", consname); /* Initialize PROM console */ (*cn_tab->cn_probe)(cn_tab); (*cn_tab->cn_init)(cn_tab); }