1 /* $NetBSD: consinit.c,v 1.18 2023/10/17 12:07:42 bouyer Exp $ */ 2 /* NetBSD: consinit.c,v 1.4 2004/03/13 17:31:34 bjh21 Exp */ 3 4 /* 5 * Copyright (c) 1998 6 * Matthias Drochner. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 */ 29 30 #include <sys/cdefs.h> 31 __KERNEL_RCSID(0, "$NetBSD: consinit.c,v 1.18 2023/10/17 12:07:42 bouyer Exp $"); 32 33 #include "opt_kgdb.h" 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/device.h> 38 #include <sys/bus.h> 39 #include <machine/bootinfo.h> 40 #include <arch/x86/include/genfb_machdep.h> 41 42 #include "xencons.h" 43 #include "vga.h" 44 #include "ega.h" 45 #include "pcdisplay.h" 46 #include "genfb.h" 47 #if (NVGA > 0) || (NEGA > 0) || (NPCDISPLAY > 0) 48 #include <dev/ic/mc6845reg.h> 49 #include <dev/ic/pcdisplayvar.h> 50 #if (NVGA > 0) 51 #include <dev/ic/vgareg.h> 52 #include <dev/ic/vgavar.h> 53 #endif 54 #if (NEGA > 0) 55 #include <dev/isa/egavar.h> 56 #endif 57 #if (NPCDISPLAY > 0) 58 #include <dev/isa/pcdisplayvar.h> 59 #endif 60 #endif 61 62 #include "pckbc.h" 63 #if (NPCKBC > 0) 64 #include <dev/isa/isareg.h> 65 #include <dev/ic/i8042reg.h> 66 #include <dev/ic/pckbcvar.h> 67 #endif 68 #include "pckbd.h" /* for pckbc_machdep_cnattach */ 69 70 #include "ukbd.h" 71 #if (NUKBD > 0) 72 #include <dev/usb/ukbdvar.h> 73 #endif 74 75 #if (NGENFB > 0) 76 #include <dev/wsfb/genfbvar.h> 77 #endif 78 79 #include "opt_xen.h" 80 #if (XEN > 0) 81 #include <xen/xen.h> 82 #include <dev/pckbport/pckbportvar.h> 83 #include <xen/hypervisor.h> 84 #include "xen_def_cons.h" 85 #endif 86 87 #include "com.h" 88 #if (NCOM > 0) 89 #include <sys/termios.h> 90 #include <dev/ic/comreg.h> 91 #include <dev/ic/comvar.h> 92 #endif 93 94 #ifndef CONSDEVNAME 95 #define CONSDEVNAME "pc" 96 #endif 97 98 #if (NCOM > 0) 99 #ifndef CONADDR 100 #define CONADDR 0x3f8 101 #endif 102 #ifndef CONSPEED 103 #define CONSPEED TTYDEF_SPEED 104 #endif 105 #ifndef CONMODE 106 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 107 #endif 108 int comcnmode = CONMODE; 109 #endif /* NCOM */ 110 111 const struct btinfo_console default_consinfo = { 112 {0, 0}, 113 CONSDEVNAME, 114 #if (NCOM > 0) 115 CONADDR, CONSPEED 116 #else 117 0, 0 118 #endif 119 }; 120 121 #ifdef KGDB 122 #ifndef KGDB_DEVNAME 123 #define KGDB_DEVNAME "com" 124 #endif 125 const char kgdb_devname[] = KGDB_DEVNAME; 126 127 #if (NCOM > 0) 128 #ifndef KGDB_DEVADDR 129 #define KGDB_DEVADDR 0x3f8 130 #endif 131 int comkgdbaddr = KGDB_DEVADDR; 132 #ifndef KGDB_DEVRATE 133 #define KGDB_DEVRATE TTYDEF_SPEED 134 #endif 135 int comkgdbrate = KGDB_DEVRATE; 136 #ifndef KGDB_DEVMODE 137 #define KGDB_DEVMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 138 #endif 139 int comkgdbmode = KGDB_DEVMODE; 140 #endif /* NCOM */ 141 142 #endif /* KGDB */ 143 144 /* 145 * consinit: 146 * initialize the system console. 147 * XXX - shouldn't deal with this initted thing, but then, 148 * it shouldn't be called from init386 either. 149 */ 150 void 151 consinit(void) 152 { 153 static int initted = 0; 154 union xen_cmdline_parseinfo xcp; 155 #if (NGENFB > 0) 156 const struct btinfo_framebuffer *fbinfo = NULL; 157 #endif 158 159 160 if (initted) { 161 return; 162 } 163 164 xen_early_console(); 165 166 #if (NGENFB > 0) && defined(DOM0OPS) 167 if (xendomain_is_dom0()) 168 fbinfo = xen_genfb_getbtinfo(); 169 #endif 170 171 initted = 1; 172 xen_parse_cmdline(XEN_PARSE_CONSOLE, &xcp); 173 174 #if (NVGA > 0) || (NGENFB > 0) 175 if (xendomain_is_privileged()) { 176 #ifdef CONS_OVERRIDE 177 if (strcmp(default_consinfo.devname, "tty0") == 0 || 178 strcmp(default_consinfo.devname, "pc") == 0) { 179 #else 180 if (strcmp(xcp.xcp_console, "tty0") == 0 || /* linux name */ 181 strcmp(xcp.xcp_console, "pc") == 0) { /* NetBSD name */ 182 #endif /* CONS_OVERRIDE */ 183 int error; 184 185 #if (NGENFB > 0) 186 if (fbinfo && fbinfo->physaddr > 0) { 187 if (x86_genfb_cnattach() == -1) { 188 initted = 0; /* defer */ 189 return; 190 } 191 genfb_cnattach(); 192 goto dokbd; 193 } else { 194 genfb_disable(); 195 } 196 #endif 197 vga_cnattach(x86_bus_space_io, x86_bus_space_mem, 198 -1, 1); 199 #if (NGENFB > 0) 200 dokbd: 201 #endif 202 error = ENODEV; 203 204 #if (NPCKBC > 0) 205 error = pckbc_cnattach(x86_bus_space_io, IO_KBD, KBCMDP, 206 PCKBC_KBD_SLOT, 0); 207 #endif 208 #if (NUKBD > 0) 209 if (error) 210 error = ukbd_cnattach(); 211 #endif 212 if (error) 213 printf("WARNING: no console keyboard, " 214 "error=%d\n", error); 215 return; 216 } 217 } 218 #endif /* NVGA */ 219 #if NXENCONS > 0 220 xenconscn_attach(); 221 return; 222 #endif /* NXENCONS */ 223 panic("consinit: no console"); 224 } 225 226 #ifdef KGDB 227 void 228 kgdb_port_init(void) 229 { 230 #if (NCOM > 0) 231 if(!strcmp(kgdb_devname, "com")) { 232 bus_space_tag_t tag = x86_bus_space_io; 233 234 com_kgdb_attach(tag, comkgdbaddr, comkgdbrate, COM_FREQ, 235 COM_TYPE_NORMAL, comkgdbmode); 236 } 237 #endif 238 } 239 #endif 240