/*      $NetBSD: platform.c,v 1.7 2022/05/24 06:28:00 andvar Exp $      */

/*-
 * Copyright (c) 2001 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by SODA Noriyuki.
 *
 * 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``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 FOUNDATION OR CONTRIBUTORS
 * 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: platform.c,v 1.7 2022/05/24 06:28:00 andvar Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kcore.h>

#include <machine/platform.h>
#include <arc/arc/arcbios.h>

struct platform *platform = NULL;

static void print_platform(struct platform *);

static void
print_platform(struct platform *p)
{
        printf("\"%s %s%s\" (%s, %s)",
            p->vendor, p->model, p->variant,
            p->vendor_id ? p->vendor_id : "NULL",
            p->system_id);
}

int
ident_platform(void)
{
        int i, rv, matched = -1, match = 0, ambiguous_match = 0;

        for (i = 0; i < nplattab; i++) {
                rv = (*plattab[i]->match)(plattab[i]);
                if (rv > match) {
                        match = rv;
                        matched = i;
                        ambiguous_match = 0;
                } else if (rv == match) {
                        ++ambiguous_match;
                }
        }
        if (ambiguous_match) {
                /* assumes that ARC Firmware printf() can be used. */
                printf("ambiguous platform detection between ");
                print_platform(plattab[matched]);
                for (i = 0; i < nplattab; i++) {
                        if (i == matched)
                                continue;
                        rv = (*plattab[i]->match)(plattab[i]);
                        if (rv < match)
                                continue;
                        if (--ambiguous_match)
                                printf(", ");
                        else
                                printf(" and ");
                        print_platform(plattab[i]);
                }
                printf(". ");
                print_platform(plattab[matched]);
                printf(" is chosen.\n");
        }
        if (match)
                platform = plattab[matched];
        return match;
}

int
platform_generic_match(struct platform *p)
{

        if (strcmp(arc_id, p->system_id) == 0 &&
            (p->vendor_id == NULL || strcmp(arc_vendor_id, p->vendor_id) == 0))
                return 1;

        return 0;
}

void
platform_nop(void)
{
}