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)
9 /* INCLUDES ******************************************************************/
15 /* GLOBALS *******************************************************************/
17 BOOLEAN HalpPciLockSettings
;
19 /* PRIVATE FUNCTIONS *********************************************************/
23 HalpGetParameters(IN PLOADER_PARAMETER_BLOCK LoaderBlock
)
27 /* Make sure we have a loader block and command line */
28 if ((LoaderBlock
) && (LoaderBlock
->LoadOptions
))
30 /* Read the command line */
31 CommandLine
= LoaderBlock
->LoadOptions
;
33 /* Check if PCI is locked */
34 if (strstr(CommandLine
, "PCILOCK")) HalpPciLockSettings
= TRUE
;
36 /* Check for initial breakpoint */
37 if (strstr(CommandLine
, "BREAK")) DbgBreakPoint();
41 /* FUNCTIONS *****************************************************************/
48 HalInitSystem(IN ULONG BootPhase
,
49 IN PLOADER_PARAMETER_BLOCK LoaderBlock
)
51 PKPRCB Prcb
= KeGetCurrentPrcb();
53 /* Check the boot phase */
56 /* Phase 0... save bus type */
57 HalpBusType
= LoaderBlock
->u
.I386
.MachineType
& 0xFF;
59 /* Get command-line parameters */
60 HalpGetParameters(LoaderBlock
);
62 /* Checked HAL requires checked kernel */
64 if (!(Prcb
->BuildType
& PRCB_BUILD_DEBUG
))
66 /* No match, bugcheck */
67 KeBugCheckEx(MISMATCHED_HAL
, 2, Prcb
->BuildType
, 1, 0);
70 /* Release build requires release HAL */
71 if (Prcb
->BuildType
& PRCB_BUILD_DEBUG
)
73 /* No match, bugcheck */
74 KeBugCheckEx(MISMATCHED_HAL
, 2, Prcb
->BuildType
, 0, 0);
79 /* SMP HAL requires SMP kernel */
80 if (Prcb
->BuildType
& PRCB_BUILD_UNIPROCESSOR
)
82 /* No match, bugcheck */
83 KeBugCheckEx(MISMATCHED_HAL
, 2, Prcb
->BuildType
, 0, 0);
87 /* Validate the PRCB */
88 if (Prcb
->MajorVersion
!= PRCB_MAJOR_VERSION
)
90 /* Validation failed, bugcheck */
91 KeBugCheckEx(MISMATCHED_HAL
, 1, Prcb
->MajorVersion
, 1, 0);
94 /* Initialize the PICs */
97 /* Force initial PIC state */
98 KfRaiseIrql(KeGetCurrentIrql());
100 /* Initialize the clock */
101 HalpInitializeClock();
103 /* Setup busy waiting */
104 HalpCalibrateStallExecution();
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 HalHaltSystem
= HaliHaltSystem
;
115 /* Initialize the hardware lock (CMOS) */
116 KeInitializeSpinLock(&HalpSystemHardwareLock
);
118 /* Do some HAL-specific initialization */
119 HalpInitPhase0(LoaderBlock
);
121 else if (BootPhase
== 1)
123 /* Initialize the default HAL stubs for bus handling functions */
124 HalpInitNonBusHandler();
126 /* Enable the clock interrupt */
127 ((PKIPCR
)KeGetPcr())->IDT
[0x30].ExtendedOffset
=
128 (USHORT
)(((ULONG_PTR
)HalpClockInterrupt
>> 16) & 0xFFFF);
129 ((PKIPCR
)KeGetPcr())->IDT
[0x30].Offset
=
130 (USHORT
)((ULONG_PTR
)HalpClockInterrupt
);
131 HalEnableSystemInterrupt(0x30, CLOCK2_LEVEL
, Latched
);
133 /* Initialize DMA. NT does this in Phase 0 */
136 /* Do some HAL-specific initialization */
140 /* All done, return */
149 HalReportResourceUsage(VOID
)
151 /* Initialize PCI bus. */
152 HalpInitializePciBus();
154 /* FIXME: This is done in ReactOS MP HAL only*/
155 //HaliReconfigurePciInterrupts();
157 /* FIXME: Report HAL Usage to kernel */