xref: /netbsd-src/sys/arch/xen/x86/consinit.c (revision 4a96dd4fc2b02adf9af17780aaa72447a29ac609)

/*	$NetBSD: consinit.c,v 1.18 2023/10/17 12:07:42 bouyer Exp $	*/
/*	NetBSD: consinit.c,v 1.4 2004/03/13 17:31:34 bjh21 Exp 	*/

/*
 * Copyright (c) 1998
 *	Matthias Drochner.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: consinit.c,v 1.18 2023/10/17 12:07:42 bouyer Exp $");

#include "opt_kgdb.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/bus.h>
#include <machine/bootinfo.h>
#include <arch/x86/include/genfb_machdep.h>

#include "xencons.h"
#include "vga.h"
#include "ega.h"
#include "pcdisplay.h"
#include "genfb.h"
#if (NVGA > 0) || (NEGA > 0) || (NPCDISPLAY > 0)
#include <dev/ic/mc6845reg.h>
#include <dev/ic/pcdisplayvar.h>
#if (NVGA > 0)
#include <dev/ic/vgareg.h>
#include <dev/ic/vgavar.h>
#endif
#if (NEGA > 0)
#include <dev/isa/egavar.h>
#endif
#if (NPCDISPLAY > 0)
#include <dev/isa/pcdisplayvar.h>
#endif
#endif

#include "pckbc.h"
#if (NPCKBC > 0)
#include <dev/isa/isareg.h>
#include <dev/ic/i8042reg.h>
#include <dev/ic/pckbcvar.h>
#endif
#include "pckbd.h" /* for pckbc_machdep_cnattach */

#include "ukbd.h"
#if (NUKBD > 0)
#include <dev/usb/ukbdvar.h>
#endif

#if (NGENFB > 0)
#include <dev/wsfb/genfbvar.h>
#endif

#include "opt_xen.h"
#if (XEN > 0)
#include <xen/xen.h>
#include <dev/pckbport/pckbportvar.h>
#include <xen/hypervisor.h>
#include "xen_def_cons.h"
#endif

#include "com.h"
#if (NCOM > 0)
#include <sys/termios.h>
#include <dev/ic/comreg.h>
#include <dev/ic/comvar.h>
#endif

#ifndef CONSDEVNAME
#define CONSDEVNAME "pc"
#endif

#if (NCOM > 0)
#ifndef CONADDR
#define CONADDR 0x3f8
#endif
#ifndef CONSPEED
#define CONSPEED TTYDEF_SPEED
#endif
#ifndef CONMODE
#define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
#endif
int comcnmode = CONMODE;
#endif /* NCOM */

const struct btinfo_console default_consinfo = {
	{0, 0},
	CONSDEVNAME,
#if (NCOM > 0)
	CONADDR, CONSPEED
#else
	0, 0
#endif
};

#ifdef KGDB
#ifndef KGDB_DEVNAME
#define KGDB_DEVNAME "com"
#endif
const char kgdb_devname[] = KGDB_DEVNAME;

#if (NCOM > 0)
#ifndef KGDB_DEVADDR
#define KGDB_DEVADDR 0x3f8
#endif
int comkgdbaddr = KGDB_DEVADDR;
#ifndef KGDB_DEVRATE
#define KGDB_DEVRATE TTYDEF_SPEED
#endif
int comkgdbrate = KGDB_DEVRATE;
#ifndef KGDB_DEVMODE
#define KGDB_DEVMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
#endif
int comkgdbmode = KGDB_DEVMODE;
#endif /* NCOM */

#endif /* KGDB */

/*
 * consinit:
 * initialize the system console.
 * XXX - shouldn't deal with this initted thing, but then,
 * it shouldn't be called from init386 either.
 */
void
consinit(void)
{
	static int initted = 0;
	union xen_cmdline_parseinfo xcp;
#if (NGENFB > 0)
        const struct btinfo_framebuffer *fbinfo = NULL;
#endif


	if (initted) {
		return;
	}

	xen_early_console();

#if (NGENFB > 0) && defined(DOM0OPS)
	if (xendomain_is_dom0())
		fbinfo = xen_genfb_getbtinfo();
#endif

	initted = 1;
	xen_parse_cmdline(XEN_PARSE_CONSOLE, &xcp);

#if (NVGA > 0) || (NGENFB > 0)
	if (xendomain_is_privileged()) {
#ifdef CONS_OVERRIDE
		if (strcmp(default_consinfo.devname, "tty0") == 0 ||
		    strcmp(default_consinfo.devname, "pc") == 0) {
#else
		if (strcmp(xcp.xcp_console, "tty0") == 0 || /* linux name */
		    strcmp(xcp.xcp_console, "pc") == 0) { /* NetBSD name */
#endif /* CONS_OVERRIDE */
			int error;

#if (NGENFB > 0)
			if (fbinfo && fbinfo->physaddr > 0) {
				if (x86_genfb_cnattach() == -1) {
					initted = 0; /* defer */
					return;
				}
				genfb_cnattach();
				goto dokbd;
			} else {
				genfb_disable();
			}
#endif
			vga_cnattach(x86_bus_space_io, x86_bus_space_mem,
			    -1, 1);
#if (NGENFB > 0)
dokbd:
#endif
			error = ENODEV;

#if (NPCKBC > 0)
			error = pckbc_cnattach(x86_bus_space_io, IO_KBD, KBCMDP,
			    PCKBC_KBD_SLOT, 0);
#endif
#if (NUKBD > 0)
			if (error)
				error = ukbd_cnattach();
#endif
			if (error)
				printf("WARNING: no console keyboard, "
				    "error=%d\n", error);
			return;
		}
	}
#endif /* NVGA */
#if NXENCONS > 0
	xenconscn_attach();
	return;
#endif /* NXENCONS */
	panic("consinit: no console");
}

#ifdef KGDB
void
kgdb_port_init(void)
{
#if (NCOM > 0)
	if(!strcmp(kgdb_devname, "com")) {
		bus_space_tag_t tag = x86_bus_space_io;

		com_kgdb_attach(tag, comkgdbaddr, comkgdbrate, COM_FREQ,
		    COM_TYPE_NORMAL, comkgdbmode);
	}
#endif
}
#endif