iokit/Drivers/platform/drvApplePlatformExpert/ApplePlatformExpert.cpp

   1 /*
   2  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * HISTORY
  27  *
  28  */
  29
  30 #include <IOKit/IODeviceTreeSupport.h>
  31 #include <IOKit/IORangeAllocator.h>
  32 #include <IOKit/nvram/IONVRAMController.h>
  33
  34 #include <IOKit/platform/ApplePlatformExpert.h>
  35
  36
  37 const OSSymbol *gGetDefaultBusSpeedsKey;
  38
  39 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  40
  41 #define super IODTPlatformExpert
  42
  43 OSDefineMetaClassAndAbstractStructors(ApplePlatformExpert, IODTPlatformExpert);
  44
  45 OSMetaClassDefineReservedUnused(ApplePlatformExpert,  0);
  46 OSMetaClassDefineReservedUnused(ApplePlatformExpert,  1);
  47 OSMetaClassDefineReservedUnused(ApplePlatformExpert,  2);
  48 OSMetaClassDefineReservedUnused(ApplePlatformExpert,  3);
  49
  50 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  51
  52 bool ApplePlatformExpert::start( IOService * provider )
  53 {
  54   UInt16 romVersion;
  55
  56   gGetDefaultBusSpeedsKey = OSSymbol::withCString("GetDefaultBusSpeeds");
  57
  58   if (provider->getProperty(gIODTNWInterruptMappingKey)) {
  59     // new world interrupt mapping => new world, for now
  60     setBootROMType(kBootROMTypeNewWorld);
  61   } else {
  62     setBootROMType(kBootROMTypeOldWorld);
  63
  64     // Get the Rom Minor Version from the 68k ROM.
  65     romVersion = ml_phys_read_64(0xffc00010ULL) & 0x0000ffff;
  66     provider->setProperty("rom-version", &romVersion, sizeof(romVersion));
  67   }
  68
  69   return super::start(provider);
  70 }
  71
  72 bool ApplePlatformExpert::configure( IOService * provider )
  73 {
  74   IORangeAllocator *    physicalRanges;
  75
  76   if((physicalRanges = getPhysicalRangeAllocator())) {
  77     physicalRanges->allocateRange(0,0x80000000);                // RAM
  78     physicalRanges->allocateRange(0xff000000,0x01000000);       // ROM
  79   }
  80   return(super::configure(provider));
  81 }
  82
  83 const char * ApplePlatformExpert::deleteList ( void )
  84 {
  85     return( "('packages', 'psuedo-usb', 'psuedo-hid', 'multiboot', 'rtas')" );
  86 }
  87
  88 const char * ApplePlatformExpert::excludeList( void )
  89 {
  90     return( "('chosen', 'memory', 'openprom', 'AAPL,ROM', 'rom', 'options', 'aliases')");
  91 }
  92
  93 void ApplePlatformExpert::registerNVRAMController( IONVRAMController * nvram )
  94 {
  95   IOReturn err;
  96   enum {   kXPRAMTimeToGMTOffset = 0xEC };
  97
  98   super::registerNVRAMController(nvram);
  99
 100   // Here we are saving off the time zone info that's in PRAM.
 101   // This probably should be a separate call that the
 102   // ApplePlatformExpert does in it's initialization.  -ECH
 103
 104   err = readXPRAM(kXPRAMTimeToGMTOffset, (UInt8 *)&_timeToGMT,
 105                   sizeof(_timeToGMT));
 106   if (err == kIOReturnSuccess) {
 107     // Convert from a SInt24 - sign extend from bit 23.
 108     if (_timeToGMT & (1 << 23))
 109       _timeToGMT |= 0xFF000000;
 110     else
 111       _timeToGMT &= 0x00FFFFFF;
 112   }
 113 }
 114
 115 #define SECS_BETWEEN_1904_1970  2082844800
 116
 117 long ApplePlatformExpert::getGMTTimeOfDay(void)
 118 {
 119    long localtime;
 120
 121    // to avid to hang the kernel at boot
 122    // I set a limit of 15 seconds waiting
 123    // for the real time clock.
 124    mach_timespec_t  t;
 125    t.tv_sec = 30;
 126    t.tv_nsec = 0;
 127    if (waitForService(resourceMatching("IORTC"), &t ) != NULL) {
 128        if (PE_read_write_time_of_day(kPEReadTOD, &localtime) == 0)
 129            return (localtime - _timeToGMT - SECS_BETWEEN_1904_1970);
 130    }
 131    else
 132       IOLog("ApplePlatformExpert::getGMTTimeOfDay can not provide time of day RTC did not show up\n");
 133
 134     return(0);
 135 }
 136
 137 void ApplePlatformExpert::setGMTTimeOfDay(long secs)
 138 {
 139    // to avid to hang the kernel at boot
 140    // I set a limit of 15 seconds waiting
 141    // for the real time clock.
 142    mach_timespec_t  t;
 143    t.tv_sec = 30;
 144    t.tv_nsec = 0;
 145    if (waitForService(resourceMatching("IORTC"), &t ) != NULL) {
 146         secs += SECS_BETWEEN_1904_1970;
 147         secs += _timeToGMT;
 148         PE_read_write_time_of_day(kPEWriteTOD, &secs);
 149     }
 150     else
 151       IOLog("ApplePlatformExpert::setGMTTimeOfDay can not set time of day RTC did not show up\n");
 152
 153 }
 154
 155 bool ApplePlatformExpert::getMachineName(char *name, int maxLength)
 156 {
 157   strncpy(name, "Power Macintosh", maxLength);
 158
 159   return true;
 160 }