xref: /src/sys/arch/xen/x86/consinit.c

/*	$NetBSD: consinit.c,v 1.3.2.4 2004/09/21 13:24:45 skrll 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 1.3.2.4 2004/09/21 13:24:45 skrll Exp $");

#include "opt_kgdb.h"

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

#include "vga.h"
#include "ega.h"
#include "pcdisplay.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 */

#ifndef __x86_64__
#include "pc.h"
#endif
#if (NPC > 0)
#include <machine/pccons.h>
#endif

#include "opt_xen.h"
#if (XEN > 0)
#include "vga_xen.h"
#include "xenkbc.h"
#include <machine/xen.h>
#include <dev/pckbport/pckbportvar.h>
#include <machine/xenkbcvar.h>
#include <machine/vga_xenvar.h>
#include <machine/hypervisor.h>
#endif

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

#include "ukbd.h"
#if (NUKBD > 0)
#include <dev/usb/ukbdvar.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()
{
	const struct btinfo_console *consinfo;
	static int initted;

	if (initted)
		return;
	initted = 1;

#if (XEN > 0)
#if (NVGA_XEN > 0) && (NXENKBC > 0)
#ifndef CONS_OVERRIDE
	if (xen_start_info.flags & SIF_CONSOLE) {
		union xen_cmdline_parseinfo xcp;

		xen_parse_cmdline(XEN_PARSE_CONSOLE, &xcp);
		if (strcmp(xcp.xcp_console, "xencons") == 0) {
			xenconscn_attach();
			return;
		}
	}
#endif
	if ((xen_start_info.flags & SIF_CONSOLE) &&
	    strcmp(default_consinfo.devname, "xencons") != 0) {
		if ((xen_start_info.flags & SIF_PRIVILEGED) == 0)
			panic("Console access without privileged status");

		vga_xen_cnattach(X86_BUS_SPACE_IO, X86_BUS_SPACE_MEM);
		xenkbc_cnattach(PCKBPORT_KBD_SLOT);
		return;
	}
#endif
	xenconscn_attach();
	return;
#endif

#ifndef CONS_OVERRIDE
	consinfo = lookup_bootinfo(BTINFO_CONSOLE);
	if (!consinfo)
#endif
		consinfo = &default_consinfo;

#if (NPC > 0) || (NVGA > 0) || (NEGA > 0) || (NPCDISPLAY > 0)
	if (!strcmp(consinfo->devname, "pc")) {
#if (NVGA > 0)
		if (!vga_cnattach(X86_BUS_SPACE_IO, X86_BUS_SPACE_MEM,
				  -1, 1))
			goto dokbd;
#endif
#if (NEGA > 0)
		if (!ega_cnattach(X86_BUS_SPACE_IO, X86_BUS_SPACE_MEM))
			goto dokbd;
#endif
#if (NPCDISPLAY > 0)
		if (!pcdisplay_cnattach(X86_BUS_SPACE_IO, X86_BUS_SPACE_MEM))
			goto dokbd;
#endif
#if (NPC > 0)
		pccnattach();
#endif
		if (0) goto dokbd; /* XXX stupid gcc */
dokbd:
#if (NPCKBC > 0)
		pckbc_cnattach(X86_BUS_SPACE_IO, IO_KBD, KBCMDP,
		    PCKBC_KBD_SLOT);
#endif
#if NPCKBC == 0 && NUKBD > 0
		ukbd_cnattach();
#endif
		return;
	}
#endif /* PC | VT | VGA | PCDISPLAY */
#if (NCOM > 0)
	if (!strcmp(consinfo->devname, "com")) {
		bus_space_tag_t tag = X86_BUS_SPACE_IO;

		if (comcnattach(tag, consinfo->addr, consinfo->speed,
				COM_FREQ, COM_TYPE_NORMAL, comcnmode))
			panic("can't init serial console @%x", consinfo->addr);

		return;
	}
#endif
	panic("invalid console device %s", consinfo->devname);
}

#if (NPCKBC > 0) && (NPCKBD == 0)
/*
 * glue code to support old console code with the
 * mi keyboard controller driver
 */
int
pckbport_machdep_cnattach(kbctag, kbcslot)
	pckbport_tag_t kbctag;
	pckbport_slot_t kbcslot;
{
#if (NPC > 0) && (NPCCONSKBD > 0)
	return (pcconskbd_cnattach(kbctag, kbcslot));
#else
	return (ENXIO);
#endif
}
#endif

#ifdef KGDB
void
kgdb_port_init()
{
#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