1 /* $NetBSD: consinit.c,v 1.25 2009/03/18 10:22:36 cegger 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 1.25 2009/03/18 10:22:36 cegger 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 .cn_probe = prom_cnprobe, 78 .cn_init = prom_cninit, 79 .cn_getc = prom_cngetc, 80 .cn_putc = prom_cnputc, 81 .cn_pollc = prom_cnpollc, 82 }; 83 84 /* 85 * The console table pointer is statically initialized 86 * to point to the PROM (output only) table, so that 87 * early calls to printf will work. 88 */ 89 struct consdev *cn_tab = &consdev_prom; 90 91 void 92 prom_cnprobe(struct consdev *cd) 93 { 94 #if NPCONS > 0 95 int maj; 96 extern const struct cdevsw pcons_cdevsw; 97 98 maj = cdevsw_lookup_major(&pcons_cdevsw); 99 cd->cn_dev = makedev(maj, 0); 100 cd->cn_pri = CN_INTERNAL; 101 #endif 102 } 103 104 int 105 prom_cngetc(dev_t dev) 106 { 107 unsigned char ch = '\0'; 108 int l; 109 #ifdef DDB 110 static int nplus = 0; 111 #endif 112 113 while ((l = prom_read(prom_stdin(), &ch, 1)) != 1) 114 /* void */; 115 #ifdef DDB 116 if (ch == '+') { 117 if (nplus++ > 3) Debugger(); 118 } else nplus = 0; 119 #endif 120 if (ch == '\r') 121 ch = '\n'; 122 return ch; 123 } 124 125 static void 126 prom_cninit(struct consdev *cn) 127 { 128 } 129 130 /* 131 * PROM console output putchar. 132 */ 133 static void 134 prom_cnputc(dev_t dev, int c) 135 { 136 int s; 137 char c0 = (c & 0x7f); 138 139 s = splhigh(); 140 prom_write(prom_stdout(), &c0, 1); 141 splx(s); 142 } 143 144 void 145 prom_cnpollc(dev_t dev, int on) 146 { 147 if (on) { 148 /* Entering debugger. */ 149 #if NFB > 0 150 fb_unblank(); 151 #endif 152 } else { 153 /* Resuming kernel. */ 154 } 155 #if NPCONS > 0 156 pcons_cnpollc(dev, on); 157 #endif 158 } 159 160 /*****************************************************************/ 161 162 #ifdef DEBUG 163 #define DBPRINT(x) prom_printf x 164 #else 165 #define DBPRINT(x) 166 #endif 167 168 int prom_stdin_node; 169 int prom_stdout_node; 170 171 /* 172 * This function replaces sys/dev/cninit.c 173 * Determine which device is the console using 174 * the PROM "input source" and "output sink". 175 */ 176 void 177 consinit(void) 178 { 179 int chosen; 180 char buffer[128]; 181 const char *consname = "unknown"; 182 183 DBPRINT(("consinit()\r\n")); 184 185 if (cn_tab != &consdev_prom) 186 return; 187 188 chosen = prom_finddevice("/chosen"); 189 190 if ((prom_stdin_node = prom_instance_to_package(prom_stdin())) == 0) { 191 printf("WARNING: no PROM stdin\n"); 192 } 193 DBPRINT(("stdin node = %x\r\n", prom_stdin_node)); 194 195 if ((prom_stdout_node = prom_instance_to_package(prom_stdout())) == 0) 196 printf("WARNING: no PROM stdout\n"); 197 DBPRINT(("stdout package = %x\r\n", prom_stdout_node)); 198 199 DBPRINT(("buffer @ %p\r\n", buffer)); 200 201 if (prom_stdin_node != 0 && 202 (prom_getproplen(prom_stdin_node, "keyboard") >= 0)) { 203 #if NUKBD > 0 204 if ((OF_instance_to_path(prom_stdin(), buffer, sizeof(buffer)) >= 0) && 205 (strstr(buffer, "/usb@") != NULL)) { 206 /* 207 * If we have a USB keyboard, it will show up as (e.g.) 208 * /pci@1f,0/usb@c,3/keyboard@1 (Blade 100) 209 */ 210 consname = "usb-keyboard/display"; 211 ukbd_cnattach(); 212 } else 213 #endif 214 consname = "sun-keyboard/display"; 215 } else if (prom_stdin_node != 0 && 216 (OF_instance_to_path(prom_stdin(), buffer, sizeof(buffer)) >= 0)) { 217 consname = buffer; 218 } 219 DBPRINT(("console is %s\n", consname)); 220 221 /* Initialize PROM console */ 222 (*cn_tab->cn_probe)(cn_tab); 223 (*cn_tab->cn_init)(cn_tab); 224 } 225