1 /* $NetBSD: consinit.c,v 1.21 2006/02/13 21:47:11 cdi 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 1.21 2006/02/13 21:47:11 cdi 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(struct consdev *); 66 static void prom_cninit(struct consdev *); 67 int prom_cngetc(dev_t); 68 static void prom_cnputc(dev_t, int); 69 static void prom_cnpollc(dev_t, int); 70 71 /* 72 * The console is set to this one initially, 73 * which lets us use the PROM until consinit() 74 * is called to select a real console. 75 */ 76 struct consdev consdev_prom = { 77 prom_cnprobe, 78 prom_cninit, 79 prom_cngetc, 80 prom_cnputc, 81 prom_cnpollc, 82 NULL, 83 }; 84 85 /* 86 * The console table pointer is statically initialized 87 * to point to the PROM (output only) table, so that 88 * early calls to printf will work. 89 */ 90 struct consdev *cn_tab = &consdev_prom; 91 92 void 93 prom_cnprobe(struct consdev *cd) 94 { 95 #if NPCONS > 0 96 int maj; 97 extern const struct cdevsw pcons_cdevsw; 98 99 maj = cdevsw_lookup_major(&pcons_cdevsw); 100 cd->cn_dev = makedev(maj, 0); 101 cd->cn_pri = CN_INTERNAL; 102 #endif 103 } 104 105 int 106 prom_cngetc(dev_t dev) 107 { 108 unsigned char ch = '\0'; 109 int l; 110 #ifdef DDB 111 static int nplus = 0; 112 #endif 113 114 while ((l = prom_read(prom_stdin(), &ch, 1)) != 1) 115 /* void */; 116 #ifdef DDB 117 if (ch == '+') { 118 if (nplus++ > 3) Debugger(); 119 } else nplus = 0; 120 #endif 121 if (ch == '\r') 122 ch = '\n'; 123 return ch; 124 } 125 126 static void 127 prom_cninit(struct consdev *cn) 128 { 129 } 130 131 /* 132 * PROM console output putchar. 133 */ 134 static void 135 prom_cnputc(dev_t dev, int c) 136 { 137 int s; 138 char c0 = (c & 0x7f); 139 140 s = splhigh(); 141 prom_write(prom_stdout(), &c0, 1); 142 splx(s); 143 } 144 145 void 146 prom_cnpollc(dev_t dev, int on) 147 { 148 if (on) { 149 /* Entering debugger. */ 150 #if NFB > 0 151 fb_unblank(); 152 #endif 153 } else { 154 /* Resuming kernel. */ 155 } 156 #if NPCONS > 0 157 pcons_cnpollc(dev, on); 158 #endif 159 } 160 161 /*****************************************************************/ 162 163 #ifdef DEBUG 164 #define DBPRINT(x) prom_printf x 165 #else 166 #define DBPRINT(x) 167 #endif 168 169 int prom_stdin_node; 170 int prom_stdout_node; 171 172 /* 173 * This function replaces sys/dev/cninit.c 174 * Determine which device is the console using 175 * the PROM "input source" and "output sink". 176 */ 177 void 178 consinit() 179 { 180 int chosen; 181 char buffer[128]; 182 const char *consname = "unknown"; 183 184 DBPRINT(("consinit()\r\n")); 185 186 if (cn_tab != &consdev_prom) 187 return; 188 189 chosen = prom_finddevice("/chosen"); 190 191 if ((prom_stdin_node = prom_instance_to_package(prom_stdin())) == 0) { 192 printf("WARNING: no PROM stdin\n"); 193 } 194 DBPRINT(("stdin node = %x\r\n", prom_stdin_node)); 195 196 if ((prom_stdout_node = prom_instance_to_package(prom_stdout())) == 0) 197 printf("WARNING: no PROM stdout\n"); 198 DBPRINT(("stdout package = %x\r\n", prom_stdout_node)); 199 200 DBPRINT(("buffer @ %p\r\n", buffer)); 201 202 if (prom_stdin_node != 0 && 203 (prom_getproplen(prom_stdin_node, "keyboard") >= 0)) { 204 #if NUKBD > 0 205 if ((OF_instance_to_path(prom_stdin(), buffer, sizeof(buffer)) >= 0) && 206 (strstr(buffer, "/usb@") != NULL)) { 207 /* 208 * If we have a USB keyboard, it will show up as (e.g.) 209 * /pci@1f,0/usb@c,3/keyboard@1 (Blade 100) 210 */ 211 consname = "usb-keyboard/display"; 212 ukbd_cnattach(); 213 } else 214 #endif 215 consname = "sun-keyboard/display"; 216 } else if (prom_stdin_node != 0 && 217 (OF_instance_to_path(prom_stdin(), buffer, sizeof(buffer)) >= 0)) { 218 consname = buffer; 219 } 220 printf("console is %s\n", consname); 221 222 /* Initialize PROM console */ 223 (*cn_tab->cn_probe)(cn_tab); 224 (*cn_tab->cn_init)(cn_tab); 225 } 226 227