reactos/hal/halx86/halinit.c

   1 /* $Id: halinit.c,v 1.10 2004/11/28 01:30:01 hbirr Exp $
   2  *
   3  * COPYRIGHT:     See COPYING in the top level directory
   4  * PROJECT:       ReactOS kernel
   5  * FILE:          ntoskrnl/hal/x86/halinit.c
   6  * PURPOSE:       Initalize the x86 hal
   7  * PROGRAMMER:    David Welch (welch@cwcom.net)
   8  * UPDATE HISTORY:
   9  *              11/06/98: Created
  10  */
  11
  12 /* INCLUDES *****************************************************************/
  13
  14 #include <ddk/ntddk.h>
  15 #include <roscfg.h>
  16 #include <hal.h>
  17
  18 #ifdef MP
  19 #include <mps.h>
  20 #endif /* MP */
  21
  22 #define NDEBUG
  23 #include <internal/debug.h>
  24
  25 /* GLOBALS *****************************************************************/
  26
  27 PVOID HalpZeroPageMapping = NULL;
  28
  29 /* FUNCTIONS ***************************************************************/
  30
  31 NTSTATUS
  32 STDCALL
  33 DriverEntry(
  34     PDRIVER_OBJECT DriverObject,
  35     PUNICODE_STRING RegistryPath)
  36 {
  37         return STATUS_SUCCESS;
  38 }
  39
  40 BOOLEAN STDCALL
  41 HalInitSystem (ULONG BootPhase,
  42                PLOADER_PARAMETER_BLOCK LoaderBlock)
  43 {
  44   if (BootPhase == 0)
  45     {
  46       /* Initialize display and make the screen black */
  47       HalInitializeDisplay (LoaderBlock);
  48
  49 #ifdef MP
  50
  51       HalpInitMPS();
  52
  53 #else
  54
  55       HalpInitPICs();
  56
  57       /* Setup busy waiting */
  58       HalpCalibrateStallExecution();
  59
  60 #endif /* MP */
  61
  62     }
  63   else if (BootPhase == 1)
  64     {
  65       HalpInitBusHandlers();
  66       HalpInitDma();
  67
  68       /* Enumerate the devices on the motherboard */
  69       HalpStartEnumerator();
  70    }
  71   else if (BootPhase == 2)
  72     {
  73       /* Go to blue screen */
  74       HalClearDisplay (0x17); /* grey on blue */
  75
  76       HalpZeroPageMapping = MmMapIoSpace((LARGE_INTEGER)0LL, PAGE_SIZE, MmNonCached);
  77     }
  78
  79   return TRUE;
  80 }
  81
  82 /* EOF */