reactos/hal/halx86/generic/halinit.c

   1 /* $Id$
   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 <hal.h>
  16
  17 #define NDEBUG
  18 #include <internal/debug.h>
  19
  20 /* GLOBALS *****************************************************************/
  21
  22 PVOID HalpZeroPageMapping = NULL;
  23 HALP_HOOKS HalpHooks;
  24
  25 /* FUNCTIONS ***************************************************************/
  26
  27 NTSTATUS
  28 STDCALL
  29 DriverEntry(
  30     PDRIVER_OBJECT DriverObject,
  31     PUNICODE_STRING RegistryPath)
  32 {
  33         return STATUS_SUCCESS;
  34 }
  35
  36 BOOLEAN STDCALL
  37 HalInitSystem (ULONG BootPhase,
  38                PLOADER_PARAMETER_BLOCK LoaderBlock)
  39 {
  40   if (BootPhase == 0)
  41     {
  42       RtlZeroMemory(&HalpHooks, sizeof(HALP_HOOKS));
  43       HalpInitPhase0();
  44     }
  45   else if (BootPhase == 1)
  46     {
  47       /* Initialize display and make the screen black */
  48       HalInitializeDisplay (LoaderBlock);
  49       HalpInitBusHandlers();
  50       HalpInitDma();
  51
  52       /* Enumerate the devices on the motherboard */
  53       HalpStartEnumerator();
  54    }
  55   else if (BootPhase == 2)
  56     {
  57       /* Go to blue screen */
  58       HalClearDisplay (0x17); /* grey on blue */
  59
  60       HalpZeroPageMapping = MmMapIoSpace((LARGE_INTEGER)0LL, PAGE_SIZE, MmNonCached);
  61     }
  62
  63   return TRUE;
  64 }
  65
  66 /* EOF */