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sysinfo.c revision 1.10 
      1 /*	$NetBSD: sysinfo.c,v 1.10 2024/09/25 08:32:44 rin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Leo Weppelman.
      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 #ifdef TOSTOOLS
     33 #include <stdio.h>
     34 #include <sys/types.h>
     35 #else
     36 
     37 #include <lib/libsa/stand.h>
     38 #include <atari_stand.h>
     39 #include <libkern.h>
     40 #include <machine/cpu.h>
     41 #endif /* TOSTOOLS */
     42 
     43 #include "libtos.h"
     44 #include "tosdefs.h"
     45 #include "kparamb.h"
     46 
     47 /*
     48  * ADDR_* defined in tosdefs.h are in the 0-th page, even if 4KB page,
     49  * i.e., [0, 0x1000). This causes -Warray-bounds for GCC12 and later.
     50  */
     51 #pragma GCC diagnostic push
     52 #pragma GCC diagnostic ignored "-Warray-bounds"
     53 
     54 /*
     55  * Extract memory and CPU/FPU info from system.
     56  */
     57 void
     58 sys_info(osdsc_t *od)
     59 {
     60 	long	*jar;
     61 	OSH	*oshdr;
     62 
     63 	od->cputype = 0;
     64 
     65 	/*
     66 	 * Some GEMDOS versions use a different year-base in the RTC.
     67 	 */
     68 	oshdr = *ADDR_OSHEAD;
     69 	oshdr = oshdr->os_beg;
     70 	if ((oshdr->os_version > 0x0300) && (oshdr->os_version < 0x0306))
     71 		od->cputype |= ATARI_CLKBROKEN;
     72 
     73 	/*
     74 	 * Auto configure memory sizes when they are not pre-set.
     75 	 */
     76 	if (od->stmem_size <= 0)
     77 		od->stmem_size  = *ADDR_PHYSTOP;
     78 
     79 	if (od->ttmem_size)
     80 		od->ttmem_start  = TTRAM_BASE;
     81 	else {
     82 		if (*ADDR_CHKRAMTOP == RAMTOP_MAGIC) {
     83 			od->ttmem_size  = *ADDR_RAMTOP;
     84 			if (od->ttmem_size > TTRAM_BASE) {
     85 				od->ttmem_size  -= TTRAM_BASE;
     86 				od->ttmem_start  = TTRAM_BASE;
     87 			}
     88 			else od->ttmem_size = 0;
     89 		}
     90 	}
     91 
     92 	/*
     93 	 * Scan cookiejar for CPU types, accellerator boards, etc.
     94 	 */
     95 	jar = *ADDR_P_COOKIE;
     96 	if (jar != NULL) {
     97 		do {
     98 		    if (jar[0] == 0x5f435055) { /* _CPU	*/
     99 			switch (jar[1]) {
    100 				case 0:
    101 					od->cputype |= ATARI_68000;
    102 					break;
    103 				case 10:
    104 					od->cputype |= ATARI_68010;
    105 					break;
    106 				case 20:
    107 					od->cputype |= ATARI_68020;
    108 					break;
    109 				case 30:
    110 					od->cputype |= ATARI_68030;
    111 					break;
    112 				case 40:
    113 					od->cputype |= ATARI_68040;
    114 					break;
    115 				case 60:
    116 					od->cputype |= ATARI_68060;
    117 					break;
    118 				default:
    119 					/* This error is caught later on */
    120 					break;
    121 		        }
    122 		    }
    123 		    if (jar[0] == 0x42504658) { /* BPFX	*/
    124 			unsigned long	*p;
    125 
    126 			p = (unsigned long*)jar[1];
    127 
    128 			od->ttmem_start = p[1];
    129 			od->ttmem_size  = p[2];
    130 		    }
    131 		    if (jar[0] == 0x5f435432) { /* _CT2	*/
    132 			/*
    133 			 * The CT2 board has a different physical base address!
    134 			 */
    135 			od->ttmem_start = CTRAM_BASE;
    136 		    }
    137 		    jar = &jar[2];
    138 		} while (jar[-2]);
    139 	}
    140 }
    141 
    142 #pragma GCC diagnostic pop
    143