/*      $NetBSD: sysinfo.c,v 1.10 2024/09/25 08:32:44 rin Exp $ */

/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Leo Weppelman.
*
* 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.
*/

#ifdef TOSTOOLS
#include <stdio.h>
#include <sys/types.h>
#else

#include <lib/libsa/stand.h>
#include <atari_stand.h>
#include <libkern.h>
#include <machine/cpu.h>
#endif /* TOSTOOLS */

#include "libtos.h"
#include "tosdefs.h"
#include "kparamb.h"

/*
* ADDR_* defined in tosdefs.h are in the 0-th page, even if 4KB page,
* i.e., [0, 0x1000). This causes -Warray-bounds for GCC12 and later.
*/
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Warray-bounds"

/*
* Extract memory and CPU/FPU info from system.
*/
void
sys_info(osdsc_t *od)
{
       long    *jar;
       OSH     *oshdr;

       od->cputype = 0;

       /*
        * Some GEMDOS versions use a different year-base in the RTC.
        */
       oshdr = *ADDR_OSHEAD;
       oshdr = oshdr->os_beg;
       if ((oshdr->os_version > 0x0300) && (oshdr->os_version < 0x0306))
               od->cputype |= ATARI_CLKBROKEN;

       /*
        * Auto configure memory sizes when they are not pre-set.
        */
       if (od->stmem_size <= 0)
               od->stmem_size  = *ADDR_PHYSTOP;

       if (od->ttmem_size)
               od->ttmem_start  = TTRAM_BASE;
       else {
               if (*ADDR_CHKRAMTOP == RAMTOP_MAGIC) {
                       od->ttmem_size  = *ADDR_RAMTOP;
                       if (od->ttmem_size > TTRAM_BASE) {
                               od->ttmem_size  -= TTRAM_BASE;
                               od->ttmem_start  = TTRAM_BASE;
                       }
                       else od->ttmem_size = 0;
               }
       }

       /*
        * Scan cookiejar for CPU types, accellerator boards, etc.
        */
       jar = *ADDR_P_COOKIE;
       if (jar != NULL) {
               do {
                   if (jar[0] == 0x5f435055) { /* _CPU */
                       switch (jar[1]) {
                               case 0:
                                       od->cputype |= ATARI_68000;
                                       break;
                               case 10:
                                       od->cputype |= ATARI_68010;
                                       break;
                               case 20:
                                       od->cputype |= ATARI_68020;
                                       break;
                               case 30:
                                       od->cputype |= ATARI_68030;
                                       break;
                               case 40:
                                       od->cputype |= ATARI_68040;
                                       break;
                               case 60:
                                       od->cputype |= ATARI_68060;
                                       break;
                               default:
                                       /* This error is caught later on */
                                       break;
                       }
                   }
                   if (jar[0] == 0x42504658) { /* BPFX */
                       unsigned long   *p;

                       p = (unsigned long*)jar[1];

                       od->ttmem_start = p[1];
                       od->ttmem_size  = p[2];
                   }
                   if (jar[0] == 0x5f435432) { /* _CT2 */
                       /*
                        * The CT2 board has a different physical base address!
                        */
                       od->ttmem_start = CTRAM_BASE;
                   }
                   jar = &jar[2];
               } while (jar[-2]);
       }
}

#pragma GCC diagnostic pop

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