consinit.c revision 1.2
1 /* $NetBSD: consinit.c,v 1.2 2000/03/06 21:36:11 thorpej 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 NULL, 85 }; 86 87 /* 88 * The console table pointer is statically initialized 89 * to point to the PROM (output only) table, so that 90 * early calls to printf will work. 91 */ 92 struct consdev *cn_tab = &consdev_prom; 93 94 void 95 nullcnprobe(cn) 96 struct consdev *cn; 97 { 98 } 99 100 static void 101 prom_cninit(cn) 102 struct consdev *cn; 103 { 104 if (!stdin) { 105 int node = OF_finddevice("/chosen"); 106 OF_getprop(node, "stdin", &stdin, sizeof(stdin)); 107 } 108 if (!stdout) { 109 int node = OF_finddevice("/chosen"); 110 OF_getprop(node, "stdout", &stdout, sizeof(stdout)); 111 } 112 } 113 114 /* 115 * PROM console input putchar. 116 * (dummy - this is output only) 117 */ 118 static int 119 prom_cngetc(dev) 120 dev_t dev; 121 { 122 char c0; 123 124 if (!stdin) { 125 int node = OF_finddevice("/chosen"); 126 OF_getprop(node, "stdin", &stdin, sizeof(stdin)); 127 } 128 if (OF_read(stdin, &c0, 1) == 1) 129 return (c0); 130 return -1; 131 } 132 133 /* 134 * PROM console output putchar. 135 */ 136 static void 137 prom_cnputc(dev, c) 138 dev_t dev; 139 int c; 140 { 141 int s; 142 char c0 = (c & 0x7f); 143 144 if (!stdout) { 145 int node = OF_finddevice("/chosen"); 146 OF_getprop(node, "stdout", &stdout, sizeof(stdout)); 147 } 148 149 s = splhigh(); 150 OF_write(stdout, &c0, 1); 151 splx(s); 152 } 153 154 /*****************************************************************/ 155 156 #ifdef DEBUG 157 #define DBPRINT(x) printf x 158 #else 159 #define DBPRINT(x) 160 #endif 161 162 /* 163 * This function replaces sys/dev/cninit.c 164 * Determine which device is the console using 165 * the PROM "input source" and "output sink". 166 */ 167 void 168 consinit() 169 { 170 register int chosen; 171 char buffer[128]; 172 extern int stdinnode, fbnode; 173 char *consname = "unknown"; 174 175 DBPRINT(("consinit()\r\n")); 176 if (cn_tab != &consdev_prom) return; 177 178 DBPRINT(("setting up stdin\r\n")); 179 chosen = OF_finddevice("/chosen"); 180 OF_getprop(chosen, "stdin", &stdin, sizeof(stdin)); 181 DBPRINT(("stdin instance = %x\r\n", stdin)); 182 183 if ((stdinnode = OF_instance_to_package(stdin)) == 0) { 184 printf("WARNING: no PROM stdin\n"); 185 } 186 187 DBPRINT(("setting up stdout\r\n")); 188 OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)); 189 190 DBPRINT(("stdout instance = %x\r\n", stdout)); 191 192 if ((fbnode = OF_instance_to_package(stdout)) == 0) 193 printf("WARNING: no PROM stdout\n"); 194 195 DBPRINT(("stdout package = %x\r\n", fbnode)); 196 197 if (stdinnode && (OF_getproplen(stdinnode,"keyboard") >= 0)) { 198 #if NKBD > 0 199 printf("cninit: kdb/display not configured\n"); 200 #endif 201 consname = "keyboard/display"; 202 } else if (fbnode && 203 (OF_instance_to_path(stdinnode, buffer, sizeof(buffer) >= 0))) { 204 consname = buffer; 205 } 206 printf("console is %s\n", consname); 207 208 /* Defer the rest to the device attach */ 209 } 210 211
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