iokit/Drivers/platform/drvApplePlatformExpert/ApplePlatformExpert.cpp

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