xref: /reactos/hal/halx86/generic/halinit.c (revision 32d615fc) 
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 CODE_SEG("INIT")
22 VOID
23 NTAPI
24 HalpGetParameters(IN PLOADER_PARAMETER_BLOCK LoaderBlock)
25 {
26     PCHAR CommandLine;
27 
28     /* Make sure we have a loader block and command line */
29     if ((LoaderBlock) && (LoaderBlock->LoadOptions))
30     {
31         /* Read the command line */
32         CommandLine = LoaderBlock->LoadOptions;
33 
34         /* Check if PCI is locked */
35         if (strstr(CommandLine, "PCILOCK")) HalpPciLockSettings = TRUE;
36 
37         /* Check for initial breakpoint */
38         if (strstr(CommandLine, "BREAK")) DbgBreakPoint();
39     }
40 }
41 
42 /* FUNCTIONS *****************************************************************/
43 
44 VOID
45 NTAPI
46 HalInitializeProcessor(
47     IN ULONG ProcessorNumber,
48     IN PLOADER_PARAMETER_BLOCK LoaderBlock)
49 {
50     /* Hal specific initialization for this cpu */
51     HalpInitProcessor(ProcessorNumber, LoaderBlock);
52 
53     /* Set default stall count */
54     KeGetPcr()->StallScaleFactor = INITIAL_STALL_COUNT;
55 
56     /* Update the interrupt affinity and processor mask */
57     InterlockedBitTestAndSetAffinity(&HalpActiveProcessors, ProcessorNumber);
58     InterlockedBitTestAndSetAffinity(&HalpDefaultInterruptAffinity, ProcessorNumber);
59 
60     if (ProcessorNumber == 0)
61     {
62         /* Register routines for KDCOM */
63         HalpRegisterKdSupportFunctions();
64     }
65 }
66 
67 /*
68  * @implemented
69  */
70 CODE_SEG("INIT")
71 BOOLEAN
72 NTAPI
73 HalInitSystem(IN ULONG BootPhase,
74               IN PLOADER_PARAMETER_BLOCK LoaderBlock)
75 {
76     PKPRCB Prcb = KeGetCurrentPrcb();
77     NTSTATUS Status;
78 
79     /* Check the boot phase */
80     if (BootPhase == 0)
81     {
82         /* Phase 0... save bus type */
83         HalpBusType = LoaderBlock->u.I386.MachineType & 0xFF;
84 
85         /* Get command-line parameters */
86         HalpGetParameters(LoaderBlock);
87 
88         /* Check for PRCB version mismatch */
89         if (Prcb->MajorVersion != PRCB_MAJOR_VERSION)
90         {
91             /* No match, bugcheck */
92             KeBugCheckEx(MISMATCHED_HAL, 1, Prcb->MajorVersion, PRCB_MAJOR_VERSION, 0);
93         }
94 
95         /* Checked/free HAL requires checked/free kernel */
96         if (Prcb->BuildType != HalpBuildType)
97         {
98             /* No match, bugcheck */
99             KeBugCheckEx(MISMATCHED_HAL, 2, Prcb->BuildType, HalpBuildType, 0);
100         }
101 
102         /* Initialize ACPI */
103         Status = HalpSetupAcpiPhase0(LoaderBlock);
104         if (!NT_SUCCESS(Status))
105         {
106             KeBugCheckEx(ACPI_BIOS_ERROR, Status, 0, 0, 0);
107         }
108 
109         /* Initialize the PICs */
110         HalpInitializePICs(TRUE);
111 
112         /* Initialize CMOS lock */
113         KeInitializeSpinLock(&HalpSystemHardwareLock);
114 
115         /* Initialize CMOS */
116         HalpInitializeCmos();
117 
118         /* Fill out the dispatch tables */
119         HalQuerySystemInformation = HaliQuerySystemInformation;
120         HalSetSystemInformation = HaliSetSystemInformation;
121         HalInitPnpDriver = HaliInitPnpDriver;
122         HalGetDmaAdapter = HalpGetDmaAdapter;
123 
124         HalGetInterruptTranslator = NULL;  // FIXME: TODO
125         HalResetDisplay = HalpBiosDisplayReset;
126         HalHaltSystem = HaliHaltSystem;
127 
128         /* Setup I/O space */
129         HalpDefaultIoSpace.Next = HalpAddressUsageList;
130         HalpAddressUsageList = &HalpDefaultIoSpace;
131 
132         /* Setup busy waiting */
133         HalpCalibrateStallExecution();
134 
135         /* Initialize the clock */
136         HalpInitializeClock();
137 
138         /*
139          * We could be rebooting with a pending profile interrupt,
140          * so clear it here before interrupts are enabled
141          */
142         HalStopProfileInterrupt(ProfileTime);
143 
144         /* Do some HAL-specific initialization */
145         HalpInitPhase0(LoaderBlock);
146 
147         /* Initialize Phase 0 of the x86 emulator */
148         HalInitializeBios(0, LoaderBlock);
149     }
150     else if (BootPhase == 1)
151     {
152         /* Initialize bus handlers */
153         HalpInitBusHandlers();
154 
155         /* Do some HAL-specific initialization */
156         HalpInitPhase1();
157 
158         /* Initialize Phase 1 of the x86 emulator */
159         HalInitializeBios(1, LoaderBlock);
160     }
161 
162     /* All done, return */
163     return TRUE;
164 }
165