consinit.c revision 1.1
1 /* $NetBSD: consinit.c,v 1.1 1999/05/23 02:46:35 eeh Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 Eduardo E. Horvath 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 /* 32 * Default console driver. Uses the PROM or whatever 33 * driver(s) are appropriate. 34 */ 35 36 #include "opt_ddb.h" 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/conf.h> 41 #include <sys/device.h> 42 #include <sys/file.h> 43 #include <sys/ioctl.h> 44 #include <sys/kernel.h> 45 #include <sys/proc.h> 46 #include <sys/tty.h> 47 #include <sys/time.h> 48 #include <sys/syslog.h> 49 50 #include <machine/autoconf.h> 51 #include <machine/openfirm.h> 52 #include <machine/bsd_openprom.h> 53 #include <machine/conf.h> 54 #include <machine/cpu.h> 55 #include <machine/eeprom.h> 56 #include <machine/psl.h> 57 #include <machine/z8530var.h> 58 59 #include <dev/cons.h> 60 61 #include <sparc64/sparc64/vaddrs.h> 62 #include <sparc64/sparc64/auxreg.h> 63 #include <sparc64/dev/cons.h> 64 65 66 67 static void prom_cninit __P((struct consdev *)); 68 static int prom_cngetc __P((dev_t)); 69 static void prom_cnputc __P((dev_t, int)); 70 71 int stdin = NULL, stdout = NULL; 72 73 /* 74 * The console is set to this one initially, 75 * which lets us use the PROM until consinit() 76 * is called to select a real console. 77 */ 78 struct consdev consdev_prom = { 79 nullcnprobe, 80 prom_cninit, 81 prom_cngetc, 82 prom_cnputc, 83 nullcnpollc, 84 }; 85 86 /* 87 * The console table pointer is statically initialized 88 * to point to the PROM (output only) table, so that 89 * early calls to printf will work. 90 */ 91 struct consdev *cn_tab = &consdev_prom; 92 93 void 94 nullcnprobe(cn) 95 struct consdev *cn; 96 { 97 } 98 99 static void 100 prom_cninit(cn) 101 struct consdev *cn; 102 { 103 if (!stdin) { 104 int node = OF_finddevice("/chosen"); 105 OF_getprop(node, "stdin", &stdin, sizeof(stdin)); 106 } 107 if (!stdout) { 108 int node = OF_finddevice("/chosen"); 109 OF_getprop(node, "stdout", &stdout, sizeof(stdout)); 110 } 111 } 112 113 /* 114 * PROM console input putchar. 115 * (dummy - this is output only) 116 */ 117 static int 118 prom_cngetc(dev) 119 dev_t dev; 120 { 121 char c0; 122 123 if (!stdin) { 124 int node = OF_finddevice("/chosen"); 125 OF_getprop(node, "stdin", &stdin, sizeof(stdin)); 126 } 127 if (OF_read(stdin, &c0, 1) == 1) 128 return (c0); 129 return -1; 130 } 131 132 /* 133 * PROM console output putchar. 134 */ 135 static void 136 prom_cnputc(dev, c) 137 dev_t dev; 138 int c; 139 { 140 int s; 141 char c0 = (c & 0x7f); 142 143 if (!stdout) { 144 int node = OF_finddevice("/chosen"); 145 OF_getprop(node, "stdout", &stdout, sizeof(stdout)); 146 } 147 148 s = splhigh(); 149 OF_write(stdout, &c0, 1); 150 splx(s); 151 } 152 153 /*****************************************************************/ 154 155 #ifdef DEBUG 156 #define DBPRINT(x) printf x 157 #else 158 #define DBPRINT(x) 159 #endif 160 161 /* 162 * This function replaces sys/dev/cninit.c 163 * Determine which device is the console using 164 * the PROM "input source" and "output sink". 165 */ 166 void 167 consinit() 168 { 169 register int chosen; 170 char buffer[128]; 171 extern int stdinnode, fbnode; 172 char *consname = "unknown"; 173 174 DBPRINT(("consinit()\r\n")); 175 if (cn_tab != &consdev_prom) return; 176 177 DBPRINT(("setting up stdin\r\n")); 178 chosen = OF_finddevice("/chosen"); 179 OF_getprop(chosen, "stdin", &stdin, sizeof(stdin)); 180 DBPRINT(("stdin instance = %x\r\n", stdin)); 181 182 if ((stdinnode = OF_instance_to_package(stdin)) == 0) { 183 printf("WARNING: no PROM stdin\n"); 184 } 185 186 DBPRINT(("setting up stdout\r\n")); 187 OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)); 188 189 DBPRINT(("stdout instance = %x\r\n", stdout)); 190 191 if ((fbnode = OF_instance_to_package(stdout)) == 0) 192 printf("WARNING: no PROM stdout\n"); 193 194 DBPRINT(("stdout package = %x\r\n", fbnode)); 195 196 if (stdinnode && (OF_getproplen(stdinnode,"keyboard") >= 0)) { 197 #if NKBD > 0 198 printf("cninit: kdb/display not configured\n"); 199 #endif 200 consname = "keyboard/display"; 201 } else if (fbnode && 202 (OF_instance_to_path(stdinnode, buffer, sizeof(buffer) >= 0))) { 203 consname = buffer; 204 } 205 printf("console is %s\n", consname); 206 207 /* Defer the rest to the device attach */ 208 } 209 210
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