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 #ifndef _MINIHAL_
  95         /* Initialize the PICs */
  96         HalpInitializePICs(TRUE);
  97 #endif
  98
  99         /* Force initial PIC state */
 100         KfRaiseIrql(KeGetCurrentIrql());
 101
 102         /* Initialize CMOS lock */
 103         KeInitializeSpinLock(&HalpSystemHardwareLock);
 104
 105         /* Initialize CMOS */
 106         HalpInitializeCmos();
 107
 108         /* Fill out the dispatch tables */
 109         HalQuerySystemInformation = HaliQuerySystemInformation;
 110         HalSetSystemInformation = HaliSetSystemInformation;
 111         HalInitPnpDriver = NULL; // FIXME: TODO
 112 #ifndef _MINIHAL_
 113         HalGetDmaAdapter = HalpGetDmaAdapter;
 114 #else
 115         HalGetDmaAdapter = NULL;
 116 #endif
 117         HalGetInterruptTranslator = NULL;  // FIXME: TODO
 118 #ifndef _MINIHAL_
 119         HalResetDisplay = HalpBiosDisplayReset;
 120 #else
 121         HalResetDisplay = NULL;
 122 #endif
 123         HalHaltSystem = HaliHaltSystem;
 124
 125         /* Register IRQ 2 */
 126         HalpRegisterVector(IDT_INTERNAL,
 127                            PRIMARY_VECTOR_BASE + 2,
 128                            PRIMARY_VECTOR_BASE + 2,
 129                            HIGH_LEVEL);
 130
 131         /* Setup I/O space */
 132         HalpDefaultIoSpace.Next = HalpAddressUsageList;
 133         HalpAddressUsageList = &HalpDefaultIoSpace;
 134
 135         /* Setup busy waiting */
 136         HalpCalibrateStallExecution();
 137
 138 #ifndef _MINIHAL_
 139         /* Initialize the clock */
 140         HalpInitializeClock();
 141 #endif
 142
 143         /*
 144          * We could be rebooting with a pending profile interrupt,
 145          * so clear it here before interrupts are enabled
 146          */
 147         HalStopProfileInterrupt(ProfileTime);
 148
 149         /* Do some HAL-specific initialization */
 150         HalpInitPhase0(LoaderBlock);
 151     }
 152     else if (BootPhase == 1)
 153     {
 154         /* Initialize bus handlers */
 155         HalpInitBusHandler();
 156
 157 #ifndef _MINIHAL_
 158         /* Enable IRQ 0 */
 159         HalpEnableInterruptHandler(IDT_DEVICE,
 160                                    0,
 161                                    PRIMARY_VECTOR_BASE,
 162                                    CLOCK2_LEVEL,
 163                                    HalpClockInterrupt,
 164                                    Latched);
 165
 166         /* Enable IRQ 8 */
 167         HalpEnableInterruptHandler(IDT_DEVICE,
 168                                    0,
 169                                    PRIMARY_VECTOR_BASE + 8,
 170                                    PROFILE_LEVEL,
 171                                    HalpProfileInterrupt,
 172                                    Latched);
 173
 174         /* Initialize DMA. NT does this in Phase 0 */
 175         HalpInitDma();
 176 #endif
 177
 178         /* Do some HAL-specific initialization */
 179         HalpInitPhase1();
 180     }
 181
 182     /* All done, return */
 183     return TRUE;
 184 }