xref: /reactos/hal/halx86/generic/halinit.c (revision 02e84521) 
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 INIT_FUNCTION
16 VOID
17 NTAPI
18 HalpGetParameters(
19     IN PLOADER_PARAMETER_BLOCK LoaderBlock
20 );
21 
22 #if defined(ALLOC_PRAGMA) && !defined(_MINIHAL_)
23 #pragma alloc_text(INIT, HalInitSystem)
24 #pragma alloc_text(INIT, HalpGetParameters)
25 #endif
26 
27 /* GLOBALS *******************************************************************/
28 
29 BOOLEAN HalpPciLockSettings;
30 
31 /* PRIVATE FUNCTIONS *********************************************************/
32 
33 INIT_FUNCTION
34 VOID
35 NTAPI
36 HalpGetParameters(IN PLOADER_PARAMETER_BLOCK LoaderBlock)
37 {
38     PCHAR CommandLine;
39 
40     /* Make sure we have a loader block and command line */
41     if ((LoaderBlock) && (LoaderBlock->LoadOptions))
42     {
43         /* Read the command line */
44         CommandLine = LoaderBlock->LoadOptions;
45 
46         /* Check if PCI is locked */
47         if (strstr(CommandLine, "PCILOCK")) HalpPciLockSettings = TRUE;
48 
49         /* Check for initial breakpoint */
50         if (strstr(CommandLine, "BREAK")) DbgBreakPoint();
51     }
52 }
53 
54 /* FUNCTIONS *****************************************************************/
55 
56 VOID
57 NTAPI
58 HalInitializeProcessor(
59     IN ULONG ProcessorNumber,
60     IN PLOADER_PARAMETER_BLOCK LoaderBlock)
61 {
62     /* Hal specific initialization for this cpu */
63     HalpInitProcessor(ProcessorNumber, LoaderBlock);
64 
65     /* Set default stall count */
66     KeGetPcr()->StallScaleFactor = INITIAL_STALL_COUNT;
67 
68     /* Update the interrupt affinity and processor mask */
69     InterlockedBitTestAndSet((PLONG)&HalpActiveProcessors, ProcessorNumber);
70     InterlockedBitTestAndSet((PLONG)&HalpDefaultInterruptAffinity,
71                              ProcessorNumber);
72 
73     /* Register routines for KDCOM */
74     HalpRegisterKdSupportFunctions();
75 }
76 
77 /*
78  * @implemented
79  */
80 INIT_FUNCTION
81 BOOLEAN
82 NTAPI
83 HalInitSystem(IN ULONG BootPhase,
84               IN PLOADER_PARAMETER_BLOCK LoaderBlock)
85 {
86     PKPRCB Prcb = KeGetCurrentPrcb();
87 
88     /* Check the boot phase */
89     if (BootPhase == 0)
90     {
91         /* Phase 0... save bus type */
92         HalpBusType = LoaderBlock->u.I386.MachineType & 0xFF;
93 
94         /* Get command-line parameters */
95         HalpGetParameters(LoaderBlock);
96 
97         /* Check for PRCB version mismatch */
98         if (Prcb->MajorVersion != PRCB_MAJOR_VERSION)
99         {
100             /* No match, bugcheck */
101             KeBugCheckEx(MISMATCHED_HAL, 1, Prcb->MajorVersion, PRCB_MAJOR_VERSION, 0);
102         }
103 
104         /* Checked/free HAL requires checked/free kernel */
105         if (Prcb->BuildType != HalpBuildType)
106         {
107             /* No match, bugcheck */
108             KeBugCheckEx(MISMATCHED_HAL, 2, Prcb->BuildType, HalpBuildType, 0);
109         }
110 
111         /* Initialize ACPI */
112         HalpSetupAcpiPhase0(LoaderBlock);
113 
114         /* Initialize the PICs */
115         HalpInitializePICs(TRUE);
116 
117         /* Initialize CMOS lock */
118         KeInitializeSpinLock(&HalpSystemHardwareLock);
119 
120         /* Initialize CMOS */
121         HalpInitializeCmos();
122 
123         /* Fill out the dispatch tables */
124         HalQuerySystemInformation = HaliQuerySystemInformation;
125         HalSetSystemInformation = HaliSetSystemInformation;
126         HalInitPnpDriver = HaliInitPnpDriver;
127         HalGetDmaAdapter = HalpGetDmaAdapter;
128 
129         HalGetInterruptTranslator = NULL;  // FIXME: TODO
130         HalResetDisplay = HalpBiosDisplayReset;
131         HalHaltSystem = HaliHaltSystem;
132 
133         /* Setup I/O space */
134         HalpDefaultIoSpace.Next = HalpAddressUsageList;
135         HalpAddressUsageList = &HalpDefaultIoSpace;
136 
137         /* Setup busy waiting */
138         HalpCalibrateStallExecution();
139 
140         /* Initialize the clock */
141         HalpInitializeClock();
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         HalpInitBusHandlers();
156 
157         /* Do some HAL-specific initialization */
158         HalpInitPhase1();
159     }
160 
161     /* All done, return */
162     return TRUE;
163 }
164