reactos/hal/halx86/generic/halinit.c

   1 /*
   2  * PROJECT:         ReactOS HAL
   3  * LICENSE:         GPL - See COPYING in the top level directory
   4  * FILE:            hal/halx86/generic/halinit.c
   5  * PURPOSE:         HAL Entrypoint and Initialization
   6  * PROGRAMMERS:     Alex Ionescu (alex.ionescu@reactos.org)
   7  */
   8
   9 /* INCLUDES ******************************************************************/
  10
  11 #include <hal.h>
  12 #define NDEBUG
  13 #include <debug.h>
  14
  15 /* GLOBALS *******************************************************************/
  16
  17 BOOLEAN HalpPciLockSettings;
  18
  19 /* PRIVATE FUNCTIONS *********************************************************/
  20
  21 VOID
  22 NTAPI
  23 HalpGetParameters(IN PLOADER_PARAMETER_BLOCK LoaderBlock)
  24 {
  25     PCHAR CommandLine;
  26
  27     /* Make sure we have a loader block and command line */
  28     if ((LoaderBlock) && (LoaderBlock->LoadOptions))
  29     {
  30         /* Read the command line */
  31         CommandLine = LoaderBlock->LoadOptions;
  32
  33         /* Check if PCI is locked */
  34         if (strstr(CommandLine, "PCILOCK")) HalpPciLockSettings = TRUE;
  35
  36         /* Check for initial breakpoint */
  37         if (strstr(CommandLine, "BREAK")) DbgBreakPoint();
  38     }
  39 }
  40
  41 /* FUNCTIONS *****************************************************************/
  42
  43 /*
  44  * @implemented
  45  */
  46 BOOLEAN
  47 NTAPI
  48 HalInitSystem(IN ULONG BootPhase,
  49               IN PLOADER_PARAMETER_BLOCK LoaderBlock)
  50 {
  51     PKPRCB Prcb = KeGetCurrentPrcb();
  52
  53     /* Check the boot phase */
  54     if (!BootPhase)
  55     {
  56         /* Phase 0... save bus type */
  57         HalpBusType = LoaderBlock->u.I386.MachineType & 0xFF;
  58
  59         /* Get command-line parameters */
  60         HalpGetParameters(LoaderBlock);
  61
  62         /* Checked HAL requires checked kernel */
  63 #if DBG
  64         if (!(Prcb->BuildType & PRCB_BUILD_DEBUG))
  65         {
  66             /* No match, bugcheck */
  67             KeBugCheckEx(MISMATCHED_HAL, 2, Prcb->BuildType, 1, 0);
  68         }
  69 #else
  70         /* Release build requires release HAL */
  71         if (Prcb->BuildType & PRCB_BUILD_DEBUG)
  72         {
  73             /* No match, bugcheck */
  74             KeBugCheckEx(MISMATCHED_HAL, 2, Prcb->BuildType, 0, 0);
  75         }
  76 #endif
  77
  78 #ifdef CONFIG_SMP
  79         /* SMP HAL requires SMP kernel */
  80         if (Prcb->BuildType & PRCB_BUILD_UNIPROCESSOR)
  81         {
  82             /* No match, bugcheck */
  83             KeBugCheckEx(MISMATCHED_HAL, 2, Prcb->BuildType, 0, 0);
  84         }
  85 #endif
  86
  87         /* Validate the PRCB */
  88         if (Prcb->MajorVersion != PRCB_MAJOR_VERSION)
  89         {
  90             /* Validation failed, bugcheck */
  91             KeBugCheckEx(MISMATCHED_HAL, 1, Prcb->MajorVersion, 1, 0);
  92         }
  93
  94         /* Initialize the PICs */
  95         HalpInitPICs();
  96
  97         /* Force initial PIC state */
  98         KfRaiseIrql(KeGetCurrentIrql());
  99
 100         /* Initialize the clock */
 101         HalpInitializeClock();
 102
 103         /* Setup busy waiting */
 104         HalpCalibrateStallExecution();
 105
 106         /* Fill out the dispatch tables */
 107         HalQuerySystemInformation = HaliQuerySystemInformation;
 108         HalSetSystemInformation = HaliSetSystemInformation;
 109         HalInitPnpDriver = NULL; // FIXME: TODO
 110         HalGetDmaAdapter = HalpGetDmaAdapter;
 111         HalGetInterruptTranslator = NULL;  // FIXME: TODO
 112         HalResetDisplay = HalpBiosDisplayReset;
 113
 114         /* Initialize the hardware lock (CMOS) */
 115         KeInitializeSpinLock(&HalpSystemHardwareLock);
 116
 117         /* Do some HAL-specific initialization */
 118         HalpInitPhase0(LoaderBlock);
 119     }
 120     else if (BootPhase == 1)
 121     {
 122         /* Initialize the default HAL stubs for bus handling functions */
 123         HalpInitNonBusHandler();
 124
 125         /* Enable the clock interrupt */
 126         ((PKIPCR)KeGetPcr())->IDT[0x30].ExtendedOffset =
 127             (USHORT)(((ULONG_PTR)HalpClockInterrupt >> 16) & 0xFFFF);
 128         ((PKIPCR)KeGetPcr())->IDT[0x30].Offset =
 129             (USHORT)((ULONG_PTR)HalpClockInterrupt);
 130         HalEnableSystemInterrupt(0x30, CLOCK2_LEVEL, Latched);
 131
 132         /* Initialize DMA. NT does this in Phase 0 */
 133         HalpInitDma();
 134
 135         /* Do some HAL-specific initialization */
 136         HalpInitPhase1();
 137     }
 138
 139     /* All done, return */
 140     return TRUE;
 141 }
 142
 143 /*
 144  * @unimplemented
 145  */
 146 VOID
 147 NTAPI
 148 HalReportResourceUsage(VOID)
 149 {
 150     /* Initialize PCI bus. */
 151     HalpInitializePciBus();
 152
 153     /* FIXME: This is done in ReactOS MP HAL only*/
 154     //HaliReconfigurePciInterrupts();
 155
 156     /* FIXME: Report HAL Usage to kernel */
 157 }
 158
 159 /* EOF */