xref: /netbsd-src/sys/arch/xen/x86/consinit.c (revision e5548b402ae4c44fb816de42c7bba9581ce23ef5)
1 /*	$NetBSD: consinit.c,v 1.6 2005/12/11 12:19:50 christos 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 1.6 2005/12/11 12:19:50 christos 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 <machine/bus.h>
39 #include <machine/bootinfo.h>
40 
41 #include "xencons.h"
42 #include "vga.h"
43 #include "ega.h"
44 #include "pcdisplay.h"
45 #if (NVGA > 0) || (NEGA > 0) || (NPCDISPLAY > 0)
46 #include <dev/ic/mc6845reg.h>
47 #include <dev/ic/pcdisplayvar.h>
48 #if (NVGA > 0)
49 #include <dev/ic/vgareg.h>
50 #include <dev/ic/vgavar.h>
51 #endif
52 #if (NEGA > 0)
53 #include <dev/isa/egavar.h>
54 #endif
55 #if (NPCDISPLAY > 0)
56 #include <dev/isa/pcdisplayvar.h>
57 #endif
58 #endif
59 
60 #include "pckbc.h"
61 #if (NPCKBC > 0)
62 #include <dev/isa/isareg.h>
63 #include <dev/ic/i8042reg.h>
64 #include <dev/ic/pckbcvar.h>
65 #endif
66 #include "pckbd.h" /* for pckbc_machdep_cnattach */
67 
68 #include "ukbd.h"
69 #if (NUKBD > 0)
70 #include <dev/usb/ukbdvar.h>
71 #endif
72 
73 #ifndef __x86_64__
74 #include "pc.h"
75 #endif
76 #if (NPC > 0)
77 #include <machine/pccons.h>
78 #endif
79 
80 #include "opt_xen.h"
81 #if (XEN > 0)
82 #include <machine/xen.h>
83 #include <dev/pckbport/pckbportvar.h>
84 #include <machine/hypervisor.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 #include "ukbd.h"
95 #if (NUKBD > 0)
96 #include <dev/usb/ukbdvar.h>
97 #endif
98 
99 #ifndef CONSDEVNAME
100 #define CONSDEVNAME "pc"
101 #endif
102 
103 #if (NCOM > 0)
104 #ifndef CONADDR
105 #define CONADDR 0x3f8
106 #endif
107 #ifndef CONSPEED
108 #define CONSPEED TTYDEF_SPEED
109 #endif
110 #ifndef CONMODE
111 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
112 #endif
113 int comcnmode = CONMODE;
114 #endif /* NCOM */
115 
116 const struct btinfo_console default_consinfo = {
117 	{0, 0},
118 	CONSDEVNAME,
119 #if (NCOM > 0)
120 	CONADDR, CONSPEED
121 #else
122 	0, 0
123 #endif
124 };
125 
126 #ifdef KGDB
127 #ifndef KGDB_DEVNAME
128 #define KGDB_DEVNAME "com"
129 #endif
130 const char kgdb_devname[] = KGDB_DEVNAME;
131 
132 #if (NCOM > 0)
133 #ifndef KGDB_DEVADDR
134 #define KGDB_DEVADDR 0x3f8
135 #endif
136 int comkgdbaddr = KGDB_DEVADDR;
137 #ifndef KGDB_DEVRATE
138 #define KGDB_DEVRATE TTYDEF_SPEED
139 #endif
140 int comkgdbrate = KGDB_DEVRATE;
141 #ifndef KGDB_DEVMODE
142 #define KGDB_DEVMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
143 #endif
144 int comkgdbmode = KGDB_DEVMODE;
145 #endif /* NCOM */
146 
147 #endif /* KGDB */
148 
149 /*
150  * consinit:
151  * initialize the system console.
152  * XXX - shouldn't deal with this initted thing, but then,
153  * it shouldn't be called from init386 either.
154  */
155 void
156 consinit()
157 {
158 	static int initted = 0;
159 	union xen_cmdline_parseinfo xcp;
160 
161 	if (initted) {
162 		return;
163 	}
164 	initted = 1;
165 	xen_parse_cmdline(XEN_PARSE_CONSOLE, &xcp);
166 
167 #if (NVGA > 0)
168 	if (xen_start_info.flags & SIF_PRIVILEGED) {
169 #ifdef CONS_OVERRIDE
170 		if (strcmp(default_consinfo.devname, "tty0") == 0 ||
171 		    strcmp(default_consinfo.devname, "pc") == 0)) {
172 #else
173 		if (strcmp(xcp.xcp_console, "tty0") == 0 || /* linux name */
174 		    strcmp(xcp.xcp_console, "pc") == 0) { /* NetBSD name */
175 #endif /* CONS_OVERRIDE */
176 			int error;
177 			vga_cnattach(X86_BUS_SPACE_IO, X86_BUS_SPACE_MEM,
178 			    -1, 1);
179 			error = ENODEV;
180 #if (NPCKBC > 0)
181 			error = pckbc_cnattach(X86_BUS_SPACE_IO, IO_KBD, KBCMDP,
182 			    PCKBC_KBD_SLOT);
183 #endif
184 #if (NUKBD > 0)
185 			if (error)
186 				error = ukbd_cnattach();
187 #endif
188 			if (error)
189 				printf("WARNING: no console keyboard, "
190 				    "error=%d\n", error);
191 			return;
192 		}
193 	}
194 #endif /* NVGA */
195 #if NXENCONS > 0
196 	xenconscn_attach();
197 	return;
198 #endif /* NXENCONS */
199 	panic("consinit: no console");
200 }
201 
202 #if (NPCKBC > 0) && (NPCKBD == 0)
203 /*
204  * glue code to support old console code with the
205  * mi keyboard controller driver
206  */
207 int
208 pckbport_machdep_cnattach(kbctag, kbcslot)
209 	pckbport_tag_t kbctag;
210 	pckbport_slot_t kbcslot;
211 {
212 #if (NPC > 0) && (NPCCONSKBD > 0)
213 	return (pcconskbd_cnattach(kbctag, kbcslot));
214 #else
215 	return (ENXIO);
216 #endif
217 }
218 #endif
219 
220 #ifdef KGDB
221 void
222 kgdb_port_init()
223 {
224 #if (NCOM > 0)
225 	if(!strcmp(kgdb_devname, "com")) {
226 		bus_space_tag_t tag = X86_BUS_SPACE_IO;
227 
228 		com_kgdb_attach(tag, comkgdbaddr, comkgdbrate, COM_FREQ,
229 		    COM_TYPE_NORMAL, comkgdbmode);
230 	}
231 #endif
232 }
233 #endif
234