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
108int comcnmode = CONMODE;
109#endif /* NCOM */
110
111const 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
125const char kgdb_devname[] = KGDB_DEVNAME;
126
127#if (NCOM > 0)
128#ifndef KGDB_DEVADDR
129#define KGDB_DEVADDR 0x3f8
130#endif
131int comkgdbaddr = KGDB_DEVADDR;
132#ifndef KGDB_DEVRATE
133#define KGDB_DEVRATE TTYDEF_SPEED
134#endif
135int comkgdbrate = KGDB_DEVRATE;
136#ifndef KGDB_DEVMODE
137#define KGDB_DEVMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
138#endif
139int 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 */
150void
151consinit(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)
200dokbd:
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
227void
228kgdb_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