/*      $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