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