xref: /reactos/hal/halx86/generic/halinit.c (revision 682f85ad) 
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     InterlockedBitTestAndSet((PLONG)&HalpActiveProcessors, ProcessorNumber);
58     InterlockedBitTestAndSet((PLONG)&HalpDefaultInterruptAffinity,
59                              ProcessorNumber);
60 
61     /* Register routines for KDCOM */
62     HalpRegisterKdSupportFunctions();
63 }
64 
65 /*
66  * @implemented
67  */
68 CODE_SEG("INIT")
69 BOOLEAN
70 NTAPI
71 HalInitSystem(IN ULONG BootPhase,
72               IN PLOADER_PARAMETER_BLOCK LoaderBlock)
73 {
74     PKPRCB Prcb = KeGetCurrentPrcb();
75 
76     /* Check the boot phase */
77     if (BootPhase == 0)
78     {
79         /* Phase 0... save bus type */
80         HalpBusType = LoaderBlock->u.I386.MachineType & 0xFF;
81 
82         /* Get command-line parameters */
83         HalpGetParameters(LoaderBlock);
84 
85         /* Check for PRCB version mismatch */
86         if (Prcb->MajorVersion != PRCB_MAJOR_VERSION)
87         {
88             /* No match, bugcheck */
89             KeBugCheckEx(MISMATCHED_HAL, 1, Prcb->MajorVersion, PRCB_MAJOR_VERSION, 0);
90         }
91 
92         /* Checked/free HAL requires checked/free kernel */
93         if (Prcb->BuildType != HalpBuildType)
94         {
95             /* No match, bugcheck */
96             KeBugCheckEx(MISMATCHED_HAL, 2, Prcb->BuildType, HalpBuildType, 0);
97         }
98 
99         /* Initialize ACPI */
100         HalpSetupAcpiPhase0(LoaderBlock);
101 
102         /* Initialize the PICs */
103         HalpInitializePICs(TRUE);
104 
105         /* Initialize CMOS lock */
106         KeInitializeSpinLock(&HalpSystemHardwareLock);
107 
108         /* Initialize CMOS */
109         HalpInitializeCmos();
110 
111         /* Fill out the dispatch tables */
112         HalQuerySystemInformation = HaliQuerySystemInformation;
113         HalSetSystemInformation = HaliSetSystemInformation;
114         HalInitPnpDriver = HaliInitPnpDriver;
115         HalGetDmaAdapter = HalpGetDmaAdapter;
116 
117         HalGetInterruptTranslator = NULL;  // FIXME: TODO
118         HalResetDisplay = HalpBiosDisplayReset;
119         HalHaltSystem = HaliHaltSystem;
120 
121         /* Setup I/O space */
122         HalpDefaultIoSpace.Next = HalpAddressUsageList;
123         HalpAddressUsageList = &HalpDefaultIoSpace;
124 
125         /* Setup busy waiting */
126         HalpCalibrateStallExecution();
127 
128         /* Initialize the clock */
129         HalpInitializeClock();
130 
131         /*
132          * We could be rebooting with a pending profile interrupt,
133          * so clear it here before interrupts are enabled
134          */
135         HalStopProfileInterrupt(ProfileTime);
136 
137         /* Do some HAL-specific initialization */
138         HalpInitPhase0(LoaderBlock);
139 
140 #ifdef _M_AMD64
141         HalInitializeBios(0, LoaderBlock);
142 #endif
143     }
144     else if (BootPhase == 1)
145     {
146         /* Initialize bus handlers */
147         HalpInitBusHandlers();
148 
149         /* Do some HAL-specific initialization */
150         HalpInitPhase1();
151 
152 #ifdef _M_AMD64
153         HalInitializeBios(1, LoaderBlock);
154 #endif
155     }
156 
157     /* All done, return */
158     return TRUE;
159 }
160