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windows-server-2003/base/hals/halx86/i386/xxhal.c

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/*++
Copyright (c) 1991 Microsoft Corporation
Module Name:
xxhal.c
Abstract:
This module implements the initialization of the system dependent
functions that define the Hardware Architecture Layer (HAL) for an
x86 system.
Author:
David N. Cutler (davec) 25-Apr-1991
Environment:
Kernel mode only.
Revision History:
--*/
#include "halp.h"
ULONG HalpBusType;
extern ADDRESS_USAGE HalpDefaultPcIoSpace;
extern ADDRESS_USAGE HalpEisaIoSpace;
extern UCHAR HalpSzPciLock[];
extern UCHAR HalpSzBreak[];
extern BOOLEAN HalpPciLockSettings;
extern UCHAR HalpAuthenticAMD[];
extern UCHAR HalpGenuineIntel[];
extern PULONG KiEnableTimerWatchdog;
extern ULONG HalpTimerWatchdogEnabled;
extern PCHAR HalpTimerWatchdogStorage;
extern PVOID HalpTimerWatchdogCurFrame;
extern PVOID HalpTimerWatchdogLastFrame;
extern ULONG HalpTimerWatchdogStorageOverflow;
extern KSPIN_LOCK HalpDmaAdapterListLock;
extern LIST_ENTRY HalpDmaAdapterList;
#ifdef ACPI_HAL
extern KEVENT HalpNewAdapter;
#endif
VOID
HalpGetParameters (
IN PLOADER_PARAMETER_BLOCK LoaderBlock
);
ULONG
HalpGetFeatureBits (
VOID
);
VOID
HalpInitReservedPages(
VOID
);
VOID
HalpAcpiTimerPerfCountHack(
VOID
);
#ifndef NT_UP
ULONG
HalpInitMP(
IN ULONG Phase,
IN PLOADER_PARAMETER_BLOCK LoaderBlock
);
#endif
KSPIN_LOCK HalpSystemHardwareLock;
#ifdef ALLOC_PRAGMA
#pragma alloc_text(INIT,HalpGetParameters)
#pragma alloc_text(INIT,HalInitSystem)
#endif
VOID
HalpGetParameters (
IN PLOADER_PARAMETER_BLOCK LoaderBlock
)
/*++
Routine Description:
This gets any parameters from the boot.ini invocation line.
Arguments:
None.
Return Value:
None
--*/
{
PCHAR Options;
if (LoaderBlock != NULL && LoaderBlock->LoadOptions != NULL) {
Options = LoaderBlock->LoadOptions;
//
// Check if PCI settings are locked down
//
if (strstr(Options, HalpSzPciLock)) {
HalpPciLockSettings = TRUE;
}
//
// Has the user asked for an initial BreakPoint?
//
if (strstr(Options, HalpSzBreak)) {
DbgBreakPoint();
}
}
return;
}
VOID
HalpInitTimerWatchdog(
IN ULONG Phase
)
/*++
Routine Description:
Determines if the system is running on a GenuineIntel part and initializes
HalpTimerWatchdogEnabled accordingly.
Arguments:
None.
Return Value:
None.
--*/
{
if (Phase == 0) {
ULONG GenuinePentiumOrLater = FALSE, Junk;
PKPRCB Prcb;
Prcb = KeGetCurrentPrcb();
if (Prcb->CpuID) {
UCHAR Buffer[50];
//
// Determine the processor type
//
HalpCpuID (0, &Junk, (PULONG) Buffer+0, (PULONG) Buffer+2, (PULONG) Buffer+1);
Buffer[12] = 0;
GenuinePentiumOrLater =
((strcmp(Buffer, HalpGenuineIntel) == 0) && (Prcb->CpuType >= 5));
HalpTimerWatchdogEnabled = GenuinePentiumOrLater;
}
} else if (HalpTimerWatchdogEnabled) {
//
// Allocate 2 pages for stack snapshots, each snapshot is 64 DWORDs.
//
if (HalpTimerWatchdogStorage =
ExAllocatePoolWithTag( NonPagedPool, PAGE_SIZE * 2, HAL_POOL_TAG )) {
HalpTimerWatchdogLastFrame =
HalpTimerWatchdogStorage + (PAGE_SIZE * 2 - 64*4);
HalpTimerWatchdogStorageOverflow = 0;
HalpTimerWatchdogCurFrame = HalpTimerWatchdogStorage;
} else {
HalpTimerWatchdogEnabled = FALSE;
}
}
}
BOOLEAN
HalInitSystem (
IN ULONG Phase,
IN PLOADER_PARAMETER_BLOCK LoaderBlock
)
/*++
Routine Description:
This function initializes the Hardware Architecture Layer (HAL) for an
x86 system.
Arguments:
None.
Return Value:
A value of TRUE is returned is the initialization was successfully
complete. Otherwise a value of FALSE is returend.
--*/
{
PMEMORY_ALLOCATION_DESCRIPTOR Descriptor;
PLIST_ENTRY NextMd;
KIRQL CurrentIrql;
PKPRCB pPRCB;
ULONG mapBufferSize;
ULONG mapBufferAddress;
pPRCB = KeGetCurrentPrcb();
if (Phase == 0) {
HalpBusType = LoaderBlock->u.I386.MachineType & 0x00ff;
HalpGetParameters (LoaderBlock);
//
// Verify Prcb version and build flags conform to
// this image
//
#if DBG
if (!(pPRCB->BuildType & PRCB_BUILD_DEBUG)) {
// This checked hal requires a checked kernel
KeBugCheckEx (MISMATCHED_HAL,
2, pPRCB->BuildType, PRCB_BUILD_DEBUG, 0);
}
#else
if (pPRCB->BuildType & PRCB_BUILD_DEBUG) {
// This free hal requires a free kernel
KeBugCheckEx (MISMATCHED_HAL, 2, pPRCB->BuildType, 0, 0);
}
#endif
#ifndef NT_UP
if (pPRCB->BuildType & PRCB_BUILD_UNIPROCESSOR) {
// This MP hal requires an MP kernel
KeBugCheckEx (MISMATCHED_HAL, 2, pPRCB->BuildType, 0, 0);
}
#endif
if (pPRCB->MajorVersion != PRCB_MAJOR_VERSION) {
KeBugCheckEx (MISMATCHED_HAL,
1, pPRCB->MajorVersion, PRCB_MAJOR_VERSION, 0);
}
//
// Phase 0 initialization
// only called by P0
//
//
// Check to make sure the MCA HAL is not running on an ISA/EISA
// system, and vice-versa.
//
#if MCA
if (HalpBusType != MACHINE_TYPE_MCA) {
KeBugCheckEx (MISMATCHED_HAL,
3, HalpBusType, MACHINE_TYPE_MCA, 0);
}
#else
if (HalpBusType == MACHINE_TYPE_MCA) {
KeBugCheckEx (MISMATCHED_HAL,
3, HalpBusType, 0, 0);
}
#endif
#ifdef ACPI_HAL
//
// Make sure that this is really an ACPI machine and initialize
// the ACPI structures.
//
HalpSetupAcpiPhase0(LoaderBlock);
#endif
HalpInitializePICs(TRUE);
//
// Now that the PICs are initialized, we need to mask them to
// reflect the current Irql
//
CurrentIrql = KeGetCurrentIrql();
CurrentIrql = KfRaiseIrql(CurrentIrql);
//
// Initialize CMOS
//
HalpInitializeCmos();
//
// Fill in handlers for APIs which this hal supports
//
HalQuerySystemInformation = HaliQuerySystemInformation;
HalSetSystemInformation = HaliSetSystemInformation;
HalInitPnpDriver = HaliInitPnpDriver;
HalGetDmaAdapter = HaliGetDmaAdapter;
HalHaltSystem = HaliHaltSystem;
HalResetDisplay = HalpBiosDisplayReset;
HalAllocateMapRegisters = HalpAllocateMapRegisters;
#if !defined( HAL_SP )
#ifdef ACPI_HAL
HalGetInterruptTranslator = HalacpiGetInterruptTranslator;
#else
HalGetInterruptTranslator = HaliGetInterruptTranslator;
#endif
#endif
#if !defined( HAL_SP ) && !(MCA)
HalInitPowerManagement = HaliInitPowerManagement;
HalLocateHiberRanges = HaliLocateHiberRanges;
#endif
//
// Register cascade vector
//
HalpRegisterVector (
InternalUsage,
PIC_SLAVE_IRQ + PRIMARY_VECTOR_BASE,
PIC_SLAVE_IRQ + PRIMARY_VECTOR_BASE,
HIGH_LEVEL );
//
// Keep track of which IRQs are level triggered.
//
if (HalpBusType == MACHINE_TYPE_EISA) {
HalpRecordEisaInterruptVectors();
}
//
// Register base IO space used by hal
//
HalpRegisterAddressUsage (&HalpDefaultPcIoSpace);
if (HalpBusType == MACHINE_TYPE_EISA) {
HalpRegisterAddressUsage (&HalpEisaIoSpace);
}
//
// Note that HalpInitializeClock MUST be called after
// HalpInitializeStallExecution, because HalpInitializeStallExecution
// reprograms the timer.
//
HalpInitializeStallExecution(0);
//
// Init timer watchdog if enabled.
//
HalpInitTimerWatchdog(Phase);
//
// Setup the clock
//
HalpInitializeClock();
//
// Make sure profile is disabled
//
HalStopProfileInterrupt(0);
//
// Remove this for the sake of the graphical boot driver. There is
// no negative effect of this. If the display isn't initialized, it
// will be initialized during HalDisplayString.
//
// HalpInitializeDisplay();
//
// Initialize spinlock used by HalGetBusData hardware access routines
//
KeInitializeSpinLock(&HalpSystemHardwareLock);
//
// Initialize data structures used to chain dma adapters
// together for debugging purposes
//
KeInitializeSpinLock(&HalpDmaAdapterListLock);
InitializeListHead(&HalpDmaAdapterList);
#ifdef ACPI_HAL
//
// Initialize synchronzation event used to serialize
// new adapter events on the ACPI HAL (which has no notion of bus
// handlers)
//
KeInitializeEvent (&HalpNewAdapter, SynchronizationEvent, TRUE);
#endif
//
// Determine if there is physical memory above 16 MB.
//
LessThan16Mb = TRUE;
NextMd = LoaderBlock->MemoryDescriptorListHead.Flink;
while (NextMd != &LoaderBlock->MemoryDescriptorListHead) {
Descriptor = CONTAINING_RECORD( NextMd,
MEMORY_ALLOCATION_DESCRIPTOR,
ListEntry );
if (Descriptor->MemoryType != LoaderFirmwarePermanent &&
Descriptor->MemoryType != LoaderSpecialMemory &&
Descriptor->BasePage + Descriptor->PageCount > 0x1000) {
LessThan16Mb = FALSE;
break;
}
NextMd = Descriptor->ListEntry.Flink;
}
#if !defined(_HALPAE_)
HalpMapBufferSize = INITIAL_MAP_BUFFER_SMALL_SIZE;
//
// Allocate map buffers for the adapter objects
//
HalpMapBufferPhysicalAddress.LowPart =
HalpAllocPhysicalMemory (LoaderBlock, MAXIMUM_PHYSICAL_ADDRESS,
HalpMapBufferSize >> PAGE_SHIFT, TRUE);
HalpMapBufferPhysicalAddress.HighPart = 0;
if (!HalpMapBufferPhysicalAddress.LowPart) {
//
// There was not a satisfactory block. Clear the allocation.
//
HalpMapBufferSize = 0;
}
#else
//
// Initialize and allocate map buffers for the 24bit master adapter
// object.
//
MasterAdapter24.MaxBufferPages =
MAXIMUM_ISA_MAP_BUFFER_SIZE / PAGE_SIZE;
mapBufferSize = INITIAL_MAP_BUFFER_SMALL_SIZE;
mapBufferAddress =
HalpAllocPhysicalMemory (LoaderBlock,
MAXIMUM_PHYSICAL_ADDRESS,
mapBufferSize >> PAGE_SHIFT,
TRUE);
if (mapBufferAddress == 0) {
mapBufferSize = 0;
}
MasterAdapter24.MapBufferPhysicalAddress.LowPart = mapBufferAddress;
MasterAdapter24.MapBufferPhysicalAddress.HighPart = 0;
MasterAdapter24.MapBufferSize = mapBufferSize;
if (HalPaeEnabled() != FALSE) {
//
// Initialize and allocate map buffers for the 32bit master adapter
// object. This should only be needed on a PAE-enabled system.
//
MasterAdapter32.MaxBufferPages =
MAXIMUM_PCI_MAP_BUFFER_SIZE / PAGE_SIZE;
mapBufferSize = INITIAL_MAP_BUFFER_LARGE_SIZE;
mapBufferAddress =
HalpAllocPhysicalMemory (LoaderBlock,
(ULONG)-1,
mapBufferSize >> PAGE_SHIFT,
TRUE);
if (mapBufferAddress == 0) {
mapBufferSize = 0;
}
MasterAdapter32.MapBufferPhysicalAddress.LowPart = mapBufferAddress;
MasterAdapter32.MapBufferPhysicalAddress.HighPart = 0;
MasterAdapter32.MapBufferSize = mapBufferSize;
}
#endif
} else {
//
// Phase 1 initialization
//
if (pPRCB->Number == 0) {
//
// Back-pocket some PTEs for DMA during low mem
//
HalpInitReservedPages();
#ifndef ACPI_HAL
//
// If P0, then setup global vectors
//
HalpRegisterInternalBusHandlers ();
#else
HalpInitNonBusHandler();
#endif
//
// Set feature bits
//
HalpFeatureBits = HalpGetFeatureBits();
//
// Use movnti routine to copy memory if Movnti support is detected
//
#if !defined(_WIN64)
if (HalpFeatureBits & HAL_WNI_PRESENT) {
HalpMoveMemory = HalpMovntiCopyBuffer;
}
#endif
//
// Init timer watchdog if enabled (allocate stack snapshot buffer).
//
HalpInitTimerWatchdog(Phase);
HalpEnableInterruptHandler (
DeviceUsage | InterruptLatched, // Report as device vector
V2I (CLOCK_VECTOR), // Bus interrupt level
CLOCK_VECTOR, // System IDT
CLOCK2_LEVEL, // System Irql
HalpClockInterrupt, // ISR
Latched );
HalpEnableInterruptHandler (
DeviceUsage | InterruptLatched, // Report as device vector
V2I (PROFILE_VECTOR), // Bus interrupt level
PROFILE_VECTOR, // System IDT
PROFILE_LEVEL, // System Irql
HalpProfileInterrupt, // ISR
Latched );
#ifdef ACPI_HAL
#if !defined(_WIN64)
//
// Perf counter patch for non-compliant ACPI machines
//
HalpAcpiTimerPerfCountHack();
#endif
#endif
#if !defined(_WIN64)
//
// If 486, the FP error will be routed via trap10. So we
// don't enable irq13. Otherwise (CPU=386), we will enable irq13
// to handle FP error.
//
if (pPRCB->CpuType == 3) {
HalpEnableInterruptHandler (
DeviceUsage, // Report as device vector
V2I (I386_80387_VECTOR), // Bus interrupt level
I386_80387_VECTOR, // System IDT
I386_80387_IRQL, // System Irql
HalpIrq13Handler, // ISR
Latched );
}
#endif
}
}
#ifndef NT_UP
HalpInitMP (Phase, LoaderBlock);
#endif
return TRUE;
}
ULONG
HalpGetFeatureBits (
VOID
)
{
UCHAR Buffer[50];
ULONG Junk, ProcessorFeatures, Bits;
PKPRCB Prcb;
ULONGLONG ApicBits;
Bits = 0;
Prcb = KeGetCurrentPrcb();
if (!Prcb->CpuID) {
Bits |= HAL_NO_SPECULATION;
return Bits;
}
//
// Determine the processor type
//
HalpCpuID (0, &Junk, (PULONG) Buffer+0, (PULONG) Buffer+2, (PULONG) Buffer+1);
Buffer[12] = 0;
HalpCpuID (1, &Junk, &Junk, &Junk, &ProcessorFeatures);
//
// Determine which features are present.
//
if (strcmp (Buffer, HalpGenuineIntel) == 0) {
//
// Check Intel feature bits for HAL features needed
//
if (Prcb->CpuType == 6) {
Bits |= HAL_PERF_EVENTS;
//
// Workaround for Pentium Pro Local APIC trap 0x0F and trap 0x00
// spurious interrupt errata 5AP and 6AP. Disable the Local APIC
// on UP Pentium Pro Systems. Interrupts are routed directly from
// 8259 PIC to CPU.
//
ApicBits = RDMSR(APIC_BASE_MSR);
if (ApicBits & APIC_ENABLED) {
//
// Local APIC is enabled - Disable it.
//
WRMSR(APIC_BASE_MSR, (ApicBits & ~APIC_ENABLED));
}
}
if (Prcb->CpuType < 6) {
Bits |= HAL_NO_SPECULATION;
}
} else if (strcmp (Buffer, HalpAuthenticAMD) == 0) {
ULONG ExtendedProcessorFeatures;
ULONG MaxExtendedFunc;
MaxExtendedFunc = 0;
HalpCpuID (0x80000000, &MaxExtendedFunc, &Junk, &Junk, &Junk);
if (MaxExtendedFunc >= 0x80000001) {
HalpCpuID (0x80000001, &Junk, &Junk, &Junk, &ExtendedProcessorFeatures);
if (ExtendedProcessorFeatures & CPUID_NX_MASK) {
Bits |= HAL_NX_PRESENT;
}
}
}
if (ProcessorFeatures & CPUID_MCA_MASK) {
Bits |= HAL_MCA_PRESENT;
}
if (ProcessorFeatures & CPUID_MCE_MASK) {
Bits |= HAL_MCE_PRESENT;
}
if (ProcessorFeatures & CPUID_VME_MASK) {
Bits |= HAL_CR4_PRESENT;
}
if (ProcessorFeatures & CPUID_WNI_MASK) {
Bits |= HAL_WNI_PRESENT;
}
return Bits;
}
#if !defined(_WIN64)
BOOLEAN
HalpIsNXEnabled (
VOID
)
/*++
Routine Description:
This function returns a boolean indicating whether the current processor
has the no-execute bit set in the EFER MSR.
Arguments:
None.
Return Value:
A value of TRUE is returned indicates that the current processor has
enabled NX mode, otherwise FALSE is returned.
--*/
{
ULONGLONG msrValue;
BOOLEAN result;
result = FALSE;
if ((HalpGetFeatureBits() & HAL_NX_PRESENT) != 0) {
msrValue = RDMSR(0xc0000080);
if ((msrValue & 0x800) != 0) {
result = TRUE;
}
}
return result;
}
#endif