1 /* $NetBSD: pram.c,v 1.22 2006/06/21 00:02:26 rjs Exp $ */ 2 3 /*- 4 * Copyright (C) 1993 Allen K. Briggs, Chris P. Caputo, 5 * Michael L. Finch, Bradley A. Grantham, and 6 * Lawrence A. Kesteloot 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the Alice Group. 20 * 4. The names of the Alice Group or any of its members may not be used 21 * to endorse or promote products derived from this software without 22 * specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE ALICE GROUP ``AS IS'' AND ANY EXPRESS OR 25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 26 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27 * IN NO EVENT SHALL THE ALICE GROUP BE LIABLE FOR ANY DIRECT, INDIRECT, 28 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 29 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: pram.c,v 1.22 2006/06/21 00:02:26 rjs Exp $"); 38 39 #include "opt_adb.h" 40 41 #include <sys/types.h> 42 #include <sys/param.h> 43 #ifdef DEBUG 44 #include <sys/systm.h> 45 #endif 46 #include <machine/viareg.h> 47 48 #include <mac68k/mac68k/pram.h> 49 #include <mac68k/mac68k/macrom.h> 50 #ifndef MRG_ADB 51 #include <mac68k/dev/adbvar.h> 52 #endif 53 54 #if DEBUG 55 static const char *convtime(unsigned long t) 56 { 57 static long daypmon[] = { 31,28,31,30,31,30,31,31,30,31,30,31 }; 58 static const char *monstr[] = {"January","February","March","April","May", 59 "June","July","August","September","October","November","December" }; 60 static char s[200]; 61 long year,month,day,hour,minute,seconds,i,dayperyear; 62 63 year=1904; 64 month=0; /* Jan */ 65 day=1; 66 hour=0; 67 minute=0; 68 seconds=0; 69 70 if(t == 0xffffffff) 71 return("<time value is -1>"); 72 73 while (t > 0) 74 { 75 if (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)) 76 { 77 dayperyear=366; 78 daypmon[1]=29; 79 } 80 else 81 { 82 dayperyear=365; 83 daypmon[1]=28; 84 } 85 i=dayperyear*60*60*24; 86 if (t >= i) 87 { 88 t-=i; 89 year++; 90 continue; 91 } 92 i=daypmon[month]*60*60*24; 93 if (t >= i) 94 { 95 t-=i; 96 month++; 97 continue; 98 } 99 i=60*60*24; 100 if (t >= i) 101 { 102 t-=i; 103 day++; 104 continue; 105 } 106 i=60*60; 107 if (t >= i) 108 { 109 t-=i; 110 hour++; 111 continue; 112 } 113 i=60; 114 if (t >= i) 115 { 116 t-=i; 117 minute++; 118 continue; 119 } 120 seconds=t; 121 t=0; 122 } 123 124 sprintf(s,"%s %ld, %ld %ld:%ld:%ld",monstr[month],day,year,hour,minute,seconds); 125 126 return s; 127 } 128 #endif 129 130 unsigned long 131 pram_readtime(void) 132 { 133 unsigned long timedata; 134 135 #ifdef MRG_ADB 136 if (0 == jClkNoMem) 137 timedata = 0; /* cause comparision of MacOS boottime */ 138 /* and PRAM time to fail */ 139 else 140 #endif 141 timedata = getPramTime(); 142 #if DEBUG 143 printf("time read from PRAM: 0x%lx\n", timedata); 144 printf("Date and time: %s\n",convtime(timedata)); 145 #endif 146 147 return(timedata); 148 } 149 150 void 151 pram_settime(unsigned long curtime) 152 { 153 #ifdef MRG_ADB 154 if (0 == jClkNoMem) 155 return; 156 else 157 #endif 158 return setPramTime(curtime); 159 } 160 161 #ifndef MRG_ADB 162 /* 163 * These functions are defined here only if we are not using 164 * the MRG method of accessing the ADB/PRAM/RTC. 165 */ 166 167 extern int adbHardware; /* from adb_direct.c */ 168 169 /* 170 * getPramTime 171 * This function can be called regrardless of the machine 172 * type. It calls the correct hardware-specific code. 173 * (It's sort of redundant with the above, but it was 174 * added later.) 175 */ 176 unsigned long 177 getPramTime(void) 178 { 179 unsigned long curtime; 180 181 switch (adbHardware) { 182 case ADB_HW_IOP: 183 case ADB_HW_II: /* access PRAM via VIA interface */ 184 curtime = (long)getPramTimeII(); 185 return curtime; 186 187 case ADB_HW_IISI: /* access PRAM via pseudo-adb functions */ 188 case ADB_HW_CUDA: 189 if (0 != adb_read_date_time(&curtime)) 190 return 0; 191 else 192 return curtime; 193 194 case ADB_HW_PB: /* don't know how to access this yet */ 195 return 0; 196 197 case ADB_HW_UNKNOWN: 198 default: 199 return 0; 200 } 201 } 202 203 /* 204 * setPramTime 205 * This function can be called regrardless of the machine 206 * type. It calls the correct hardware-specific code. 207 * (It's sort of redundant with the above, but it was 208 * added later.) 209 */ 210 void 211 setPramTime(unsigned long curtime) 212 { 213 switch (adbHardware) { 214 case ADB_HW_IOP: 215 case ADB_HW_II: /* access PRAM via ADB interface */ 216 setPramTimeII(curtime); 217 return; 218 219 case ADB_HW_IISI: /* access PRAM via pseudo-adb functions */ 220 case ADB_HW_CUDA: 221 adb_set_date_time(curtime); 222 return; 223 224 case ADB_HW_PB: /* don't know how to access this yet */ 225 return; 226 227 case ADB_HW_UNKNOWN: 228 return; 229 } 230 } 231 232 #endif /* !MRG_ADB */ 233