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      1 /*	$NetBSD: platform.c,v 1.7 2022/05/24 06:28:00 andvar Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by SODA Noriyuki.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: platform.c,v 1.7 2022/05/24 06:28:00 andvar Exp $");
     34 
     35 #include <sys/param.h>
     36 #include <sys/systm.h>
     37 #include <sys/kcore.h>
     38 
     39 #include <machine/platform.h>
     40 #include <arc/arc/arcbios.h>
     41 
     42 struct platform *platform = NULL;
     43 
     44 static void print_platform(struct platform *);
     45 
     46 static void
     47 print_platform(struct platform *p)
     48 {
     49 	printf("\"%s %s%s\" (%s, %s)",
     50 	    p->vendor, p->model, p->variant,
     51 	    p->vendor_id ? p->vendor_id : "NULL",
     52 	    p->system_id);
     53 }
     54 
     55 int
     56 ident_platform(void)
     57 {
     58 	int i, rv, matched = -1, match = 0, ambiguous_match = 0;
     59 
     60 	for (i = 0; i < nplattab; i++) {
     61 		rv = (*plattab[i]->match)(plattab[i]);
     62 		if (rv > match) {
     63 			match = rv;
     64 			matched = i;
     65 			ambiguous_match = 0;
     66 		} else if (rv == match) {
     67 			++ambiguous_match;
     68 		}
     69 	}
     70 	if (ambiguous_match) {
     71 		/* assumes that ARC Firmware printf() can be used. */
     72 		printf("ambiguous platform detection between ");
     73 		print_platform(plattab[matched]);
     74 		for (i = 0; i < nplattab; i++) {
     75 			if (i == matched)
     76 				continue;
     77 			rv = (*plattab[i]->match)(plattab[i]);
     78 			if (rv < match)
     79 				continue;
     80 			if (--ambiguous_match)
     81 				printf(", ");
     82 			else
     83 				printf(" and ");
     84 			print_platform(plattab[i]);
     85 		}
     86 		printf(". ");
     87 		print_platform(plattab[matched]);
     88 		printf(" is chosen.\n");
     89 	}
     90 	if (match)
     91 		platform = plattab[matched];
     92 	return match;
     93 }
     94 
     95 int
     96 platform_generic_match(struct platform *p)
     97 {
     98 
     99 	if (strcmp(arc_id, p->system_id) == 0 &&
    100 	    (p->vendor_id == NULL || strcmp(arc_vendor_id, p->vendor_id) == 0))
    101 		return 1;
    102 
    103 	return 0;
    104 }
    105 
    106 void
    107 platform_nop(void)
    108 {
    109 }
    110