1 /* $NetBSD: consinit.c,v 1.20 2005/12/17 17:58:02 jdc 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 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: consinit.c,v 1.20 2005/12/17 17:58:02 jdc Exp $"); 33 34 #include "opt_ddb.h" 35 #include "pcons.h" 36 #include "ukbd.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/cpu.h> 54 #include <machine/eeprom.h> 55 #include <machine/psl.h> 56 #include <machine/z8530var.h> 57 #include <machine/sparc64.h> 58 59 #include <dev/cons.h> 60 61 #include <sparc64/dev/cons.h> 62 63 #include <dev/usb/ukbdvar.h> 64 65 static void prom_cnprobe __P((struct consdev *)); 66 static void prom_cninit __P((struct consdev *)); 67 int prom_cngetc __P((dev_t)); 68 static void prom_cnputc __P((dev_t, int)); 69 static void prom_cnpollc __P((dev_t, int)); 70 static void prom_cnputc __P((dev_t, int)); 71 72 /* 73 * The console is set to this one initially, 74 * which lets us use the PROM until consinit() 75 * is called to select a real console. 76 */ 77 struct consdev consdev_prom = { 78 prom_cnprobe, 79 prom_cninit, 80 prom_cngetc, 81 prom_cnputc, 82 prom_cnpollc, 83 NULL, 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 prom_cnprobe(cd) 95 struct consdev *cd; 96 { 97 #if NPCONS > 0 98 int maj; 99 extern const struct cdevsw pcons_cdevsw; 100 101 maj = cdevsw_lookup_major(&pcons_cdevsw); 102 cd->cn_dev = makedev(maj, 0); 103 cd->cn_pri = CN_INTERNAL; 104 #endif 105 } 106 107 int 108 prom_cngetc(dev) 109 dev_t dev; 110 { 111 unsigned char ch = '\0'; 112 int l; 113 #ifdef DDB 114 static int nplus = 0; 115 #endif 116 117 while ((l = prom_read(prom_stdin(), &ch, 1)) != 1) 118 /* void */; 119 #ifdef DDB 120 if (ch == '+') { 121 if (nplus++ > 3) Debugger(); 122 } else nplus = 0; 123 #endif 124 if (ch == '\r') 125 ch = '\n'; 126 return ch; 127 } 128 129 static void 130 prom_cninit(cn) 131 struct consdev *cn; 132 { 133 } 134 135 /* 136 * PROM console output putchar. 137 */ 138 static void 139 prom_cnputc(dev, c) 140 dev_t dev; 141 int c; 142 { 143 int s; 144 char c0 = (c & 0x7f); 145 146 s = splhigh(); 147 prom_write(prom_stdout(), &c0, 1); 148 splx(s); 149 } 150 151 void 152 prom_cnpollc(dev, on) 153 dev_t dev; 154 int on; 155 { 156 if (on) { 157 /* Entering debugger. */ 158 #if NFB > 0 159 fb_unblank(); 160 #endif 161 } else { 162 /* Resuming kernel. */ 163 } 164 #if NPCONS > 0 165 pcons_cnpollc(dev, on); 166 #endif 167 } 168 169 /*****************************************************************/ 170 171 #ifdef DEBUG 172 #define DBPRINT(x) prom_printf x 173 #else 174 #define DBPRINT(x) 175 #endif 176 177 int prom_stdin_node; 178 int prom_stdout_node; 179 180 /* 181 * This function replaces sys/dev/cninit.c 182 * Determine which device is the console using 183 * the PROM "input source" and "output sink". 184 */ 185 void 186 consinit() 187 { 188 int chosen; 189 char buffer[128]; 190 const char *consname = "unknown"; 191 192 DBPRINT(("consinit()\r\n")); 193 194 if (cn_tab != &consdev_prom) 195 return; 196 197 chosen = prom_finddevice("/chosen"); 198 199 if ((prom_stdin_node = prom_instance_to_package(prom_stdin())) == 0) { 200 printf("WARNING: no PROM stdin\n"); 201 } 202 DBPRINT(("stdin node = %x\r\n", prom_stdin_node)); 203 204 if ((prom_stdout_node = prom_instance_to_package(prom_stdout())) == 0) 205 printf("WARNING: no PROM stdout\n"); 206 DBPRINT(("stdout package = %x\r\n", prom_stdout_node)); 207 208 DBPRINT(("buffer @ %p\r\n", buffer)); 209 210 if (prom_stdin_node != 0 && 211 (prom_getproplen(prom_stdin_node, "keyboard") >= 0)) { 212 #if NUKBD > 0 213 if ((OF_instance_to_path(prom_stdin(), buffer, sizeof(buffer)) >= 0) && 214 (strstr(buffer, "/usb@") != NULL)) { 215 /* 216 * If we have a USB keyboard, it will show up as (e.g.) 217 * /pci@1f,0/usb@c,3/keyboard@1 (Blade 100) 218 */ 219 consname = "usb-keyboard/display"; 220 ukbd_cnattach(); 221 } else 222 #endif 223 consname = "sun-keyboard/display"; 224 } else if (prom_stdin_node != 0 && 225 (OF_instance_to_path(prom_stdin(), buffer, sizeof(buffer)) >= 0)) { 226 consname = buffer; 227 } 228 printf("console is %s\n", consname); 229 230 /* Initialize PROM console */ 231 (*cn_tab->cn_probe)(cn_tab); 232 (*cn_tab->cn_init)(cn_tab); 233 } 234 235