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  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * HISTORY
  24  *
  25  */
  26
  27 #include <IOKit/IODeviceTreeSupport.h>
  28 #include <IOKit/IORangeAllocator.h>
  29 #include <IOKit/nvram/IONVRAMController.h>
  30
  31 #include <IOKit/platform/ApplePlatformExpert.h>
  32
  33
  34 const OSSymbol *gGetDefaultBusSpeedsKey;
  35
  36 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  37
  38 #define super IODTPlatformExpert
  39
  40 OSDefineMetaClassAndAbstractStructors(ApplePlatformExpert, IODTPlatformExpert);
  41
  42 OSMetaClassDefineReservedUnused(ApplePlatformExpert,  0);
  43 OSMetaClassDefineReservedUnused(ApplePlatformExpert,  1);
  44 OSMetaClassDefineReservedUnused(ApplePlatformExpert,  2);
  45 OSMetaClassDefineReservedUnused(ApplePlatformExpert,  3);
  46
  47 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  48
  49 bool ApplePlatformExpert::start( IOService * provider )
  50 {
  51   UInt16 romVersion;
  52
  53   gGetDefaultBusSpeedsKey = OSSymbol::withCString("GetDefaultBusSpeeds");
  54
  55   if (provider->getProperty(gIODTNWInterruptMappingKey)) {
  56     // new world interrupt mapping => new world, for now
  57     setBootROMType(kBootROMTypeNewWorld);
  58   } else {
  59     setBootROMType(kBootROMTypeOldWorld);
  60
  61     // Get the Rom Minor Version from the 68k ROM.
  62     romVersion = ml_phys_read(0xffc00010) & 0x0000ffff;
  63     provider->setProperty("rom-version", &romVersion, sizeof(romVersion));
  64   }
  65
  66   return super::start(provider);
  67 }
  68
  69 bool ApplePlatformExpert::configure( IOService * provider )
  70 {
  71   IORangeAllocator *    physicalRanges;
  72
  73   if((physicalRanges = getPhysicalRangeAllocator())) {
  74     physicalRanges->allocateRange(0,0x80000000);                // RAM
  75     physicalRanges->allocateRange(0xff000000,0x01000000);       // ROM
  76   }
  77   return(super::configure(provider));
  78 }
  79
  80 const char * ApplePlatformExpert::deleteList ( void )
  81 {
  82     return( "('packages', 'psuedo-usb', 'psuedo-hid', 'multiboot', 'rtas')" );
  83 }
  84
  85 const char * ApplePlatformExpert::excludeList( void )
  86 {
  87     return( "('chosen', 'memory', 'openprom', 'AAPL,ROM', 'rom', 'options', 'aliases')");
  88 }
  89
  90 void ApplePlatformExpert::registerNVRAMController( IONVRAMController * nvram )
  91 {
  92   IOReturn err;
  93   enum {   kXPRAMTimeToGMTOffset = 0xEC };
  94
  95   super::registerNVRAMController(nvram);
  96
  97   // Here we are saving off the time zone info that's in PRAM.
  98   // This probably should be a separate call that the
  99   // ApplePlatformExpert does in it's initialization.  -ECH
 100
 101   err = readXPRAM(kXPRAMTimeToGMTOffset, (UInt8 *)&_timeToGMT,
 102                   sizeof(_timeToGMT));
 103   if (err == kIOReturnSuccess) {
 104     // Convert from a SInt24 - sign extend from bit 23.
 105     if (_timeToGMT & (1 << 23))
 106       _timeToGMT |= 0xFF000000;
 107     else
 108       _timeToGMT &= 0x00FFFFFF;
 109   }
 110 }
 111
 112 #define SECS_BETWEEN_1904_1970  2082844800
 113
 114 long ApplePlatformExpert::getGMTTimeOfDay(void)
 115 {
 116    long localtime;
 117
 118    // to avid to hang the kernel at boot
 119    // I set a limit of 15 seconds waiting
 120    // for the real time clock.
 121    mach_timespec_t  t;
 122    t.tv_sec = 30;
 123    t.tv_nsec = 0;
 124    if (waitForService(resourceMatching("IORTC"), &t ) != NULL) {
 125        if (PE_read_write_time_of_day(kPEReadTOD, &localtime) == 0)
 126            return (localtime - _timeToGMT - SECS_BETWEEN_1904_1970);
 127    }
 128    else
 129       IOLog("ApplePlatformExpert::getGMTTimeOfDay can not provide time of day RTC did not show up\n");
 130
 131     return(0);
 132 }
 133
 134 void ApplePlatformExpert::setGMTTimeOfDay(long secs)
 135 {
 136    // to avid to hang the kernel at boot
 137    // I set a limit of 15 seconds waiting
 138    // for the real time clock.
 139    mach_timespec_t  t;
 140    t.tv_sec = 30;
 141    t.tv_nsec = 0;
 142    if (waitForService(resourceMatching("IORTC"), &t ) != NULL) {
 143         secs += SECS_BETWEEN_1904_1970;
 144         secs += _timeToGMT;
 145         PE_read_write_time_of_day(kPEWriteTOD, &secs);
 146     }
 147     else
 148       IOLog("ApplePlatformExpert::setGMTTimeOfDay can not set time of day RTC did not show up\n");
 149
 150 }
 151
 152 bool ApplePlatformExpert::getMachineName(char *name, int maxLength)
 153 {
 154   strncpy(name, "Power Macintosh", maxLength);
 155
 156   return true;
 157 }