iokit/Drivers/platform/drvApplePlatformExpert/ApplePlatformExpert.cpp

   1 /*
   2  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License.  The rights granted to you under the
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  * HISTORY
  32  *
  33  */
  34
  35 #include <IOKit/IODeviceTreeSupport.h>
  36 #include <IOKit/IORangeAllocator.h>
  37 #include <IOKit/nvram/IONVRAMController.h>
  38
  39 #include <IOKit/platform/ApplePlatformExpert.h>
  40
  41
  42 const OSSymbol *gGetDefaultBusSpeedsKey;
  43
  44 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  45
  46 #define super IODTPlatformExpert
  47
  48 OSDefineMetaClassAndAbstractStructors(ApplePlatformExpert, IODTPlatformExpert);
  49
  50 OSMetaClassDefineReservedUnused(ApplePlatformExpert,  0);
  51 OSMetaClassDefineReservedUnused(ApplePlatformExpert,  1);
  52 OSMetaClassDefineReservedUnused(ApplePlatformExpert,  2);
  53 OSMetaClassDefineReservedUnused(ApplePlatformExpert,  3);
  54
  55 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  56
  57 bool ApplePlatformExpert::start( IOService * provider )
  58 {
  59   UInt16 romVersion;
  60
  61   gGetDefaultBusSpeedsKey = OSSymbol::withCString("GetDefaultBusSpeeds");
  62
  63   if (provider->getProperty(gIODTNWInterruptMappingKey)) {
  64     // new world interrupt mapping => new world, for now
  65     setBootROMType(kBootROMTypeNewWorld);
  66   } else {
  67     setBootROMType(kBootROMTypeOldWorld);
  68
  69     // Get the Rom Minor Version from the 68k ROM.
  70     romVersion = ml_phys_read_64(0xffc00010ULL) & 0x0000ffff;
  71     provider->setProperty("rom-version", &romVersion, sizeof(romVersion));
  72   }
  73
  74   return super::start(provider);
  75 }
  76
  77 bool ApplePlatformExpert::configure( IOService * provider )
  78 {
  79   IORangeAllocator *    physicalRanges;
  80
  81   if((physicalRanges = getPhysicalRangeAllocator())) {
  82     physicalRanges->allocateRange(0,0x80000000);                // RAM
  83     physicalRanges->allocateRange(0xff000000,0x01000000);       // ROM
  84   }
  85   return(super::configure(provider));
  86 }
  87
  88 const char * ApplePlatformExpert::deleteList ( void )
  89 {
  90     return( "('packages', 'psuedo-usb', 'psuedo-hid', 'multiboot', 'rtas')" );
  91 }
  92
  93 const char * ApplePlatformExpert::excludeList( void )
  94 {
  95     return( "('chosen', 'memory', 'openprom', 'AAPL,ROM', 'rom', 'options', 'aliases')");
  96 }
  97
  98 void ApplePlatformExpert::registerNVRAMController( IONVRAMController * nvram )
  99 {
 100   IOReturn err;
 101   enum {   kXPRAMTimeToGMTOffset = 0xEC };
 102
 103   super::registerNVRAMController(nvram);
 104
 105   // Here we are saving off the time zone info that's in PRAM.
 106   // This probably should be a separate call that the
 107   // ApplePlatformExpert does in it's initialization.  -ECH
 108
 109   err = readXPRAM(kXPRAMTimeToGMTOffset, (UInt8 *)&_timeToGMT,
 110                   sizeof(_timeToGMT));
 111   if (err == kIOReturnSuccess) {
 112     // Convert from a SInt24 - sign extend from bit 23.
 113     if (_timeToGMT & (1 << 23))
 114       _timeToGMT |= 0xFF000000;
 115     else
 116       _timeToGMT &= 0x00FFFFFF;
 117   }
 118 }
 119
 120 #define SECS_BETWEEN_1904_1970  2082844800
 121
 122 long ApplePlatformExpert::getGMTTimeOfDay(void)
 123 {
 124    long localtime;
 125
 126    // to avid to hang the kernel at boot
 127    // I set a limit of 15 seconds waiting
 128    // for the real time clock.
 129    mach_timespec_t  t;
 130    t.tv_sec = 30;
 131    t.tv_nsec = 0;
 132    if (waitForService(resourceMatching("IORTC"), &t ) != NULL) {
 133        if (PE_read_write_time_of_day(kPEReadTOD, &localtime) == 0)
 134            return (localtime - _timeToGMT - SECS_BETWEEN_1904_1970);
 135    }
 136    else
 137       IOLog("ApplePlatformExpert::getGMTTimeOfDay can not provide time of day RTC did not show up\n");
 138
 139     return(0);
 140 }
 141
 142 void ApplePlatformExpert::setGMTTimeOfDay(long secs)
 143 {
 144    // to avid to hang the kernel at boot
 145    // I set a limit of 15 seconds waiting
 146    // for the real time clock.
 147    mach_timespec_t  t;
 148    t.tv_sec = 30;
 149    t.tv_nsec = 0;
 150    if (waitForService(resourceMatching("IORTC"), &t ) != NULL) {
 151         secs += SECS_BETWEEN_1904_1970;
 152         secs += _timeToGMT;
 153         PE_read_write_time_of_day(kPEWriteTOD, &secs);
 154     }
 155     else
 156       IOLog("ApplePlatformExpert::setGMTTimeOfDay can not set time of day RTC did not show up\n");
 157
 158 }
 159
 160 bool ApplePlatformExpert::getMachineName(char *name, int maxLength)
 161 {
 162   strncpy(name, "Power Macintosh", maxLength);
 163
 164   return true;
 165 }