misc.c File Reference

#include <hal.h>
#include <smp.h>
#include <debug.h>

Include dependency graph for misc.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
VOID NTAPI	HalpReportSerialNumber (VOID)
NTSTATUS NTAPI	HalpMarkAcpiHal (VOID)
NTSTATUS NTAPI	HalpOpenRegistryKey (IN PHANDLE KeyHandle, IN HANDLE RootKey, IN PUNICODE_STRING KeyName, IN ACCESS_MASK DesiredAccess, IN BOOLEAN Create)
VOID NTAPI	HalpCheckPowerButton (VOID)
VOID NTAPI	HalpFlushTLB (VOID)
UCHAR FASTCALL	HalSystemVectorDispatchEntry (IN ULONG Vector, OUT PKINTERRUPT_ROUTINE **FlatDispatch, OUT PKINTERRUPT_ROUTINE *NoConnection)
VOID NTAPI	KeFlushWriteBuffer (VOID)

Variables
HALP_APIC_INFO_TABLE	HalpApicInfoTable
UCHAR	HalpSerialLen
CHAR	HalpSerialNumber [31]

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 13 of file misc.c.

Function Documentation

HalpCheckPowerButton()

VOID NTAPI HalpCheckPowerButton

(

VOID

)

Definition at line 150 of file misc.c.

{
    //
    // Nothing to do on non-ACPI
    //
    return;
}

Referenced by HalpRegisterKdSupportFunctions().

HalpFlushTLB()

VOID NTAPI HalpFlushTLB

(

VOID

)

Definition at line 160 of file misc.c.

{
    ULONG_PTR Flags, Cr4;
    INT CpuInfo[4];
    ULONG_PTR PageDirectory;
 
    //
    // Disable interrupts
    //
    Flags = __readeflags();
    _disable();
 
    //
    // Get page table directory base
    //
    PageDirectory = __readcr3();
 
    //
    // Check for CPUID support
    //
    if (KeGetCurrentPrcb()->CpuID)
    {
        //
        // Check for global bit in CPU features
        //
        __cpuid(CpuInfo, 1);
        if (CpuInfo[3] & 0x2000)
        {
            //
            // Get current CR4 value
            //
            Cr4 = __readcr4();
 
            //
            // Disable global bit
            //
            __writecr4(Cr4 & ~CR4_PGE);
 
            //
            // Flush TLB and re-enable global bit
            //
            __writecr3(PageDirectory);
            __writecr4(Cr4);
 
            //
            // Restore interrupts
            //
            __writeeflags(Flags);
            return;
        }
    }
 
    //
    // Legacy: just flush TLB
    //
    __writecr3(PageDirectory);
    __writeeflags(Flags);
}

Referenced by HalpMapPhysicalMemory64Vista(), HalpMapRealModeMemory(), HalpUnmapRealModeMemory(), and HalpUnmapVirtualAddressVista().

HalpMarkAcpiHal()

NTSTATUS NTAPI HalpMarkAcpiHal

(

VOID

)

Definition at line 61 of file misc.c.

{
    NTSTATUS Status;
    UNICODE_STRING KeyString;
    HANDLE KeyHandle;
    HANDLE Handle;
    ULONG Value = HalDisableFirmwareMapper ? 1 : 0;
 
    /* Open the control set key */
    RtlInitUnicodeString(&KeyString,
                         L"\\REGISTRY\\MACHINE\\SYSTEM\\CURRENTCONTROLSET");
    Status = HalpOpenRegistryKey(&Handle, 0, &KeyString, KEY_ALL_ACCESS, FALSE);
    if (NT_SUCCESS(Status))
    {
        /* Open the PNP key */
        RtlInitUnicodeString(&KeyString, L"Control\\Pnp");
        Status = HalpOpenRegistryKey(&KeyHandle,
                                     Handle,
                                     &KeyString,
                                     KEY_ALL_ACCESS,
                                     TRUE);
        /* Close root key */
        ZwClose(Handle);
 
        /* Check if PNP BIOS key exists */
        if (NT_SUCCESS(Status))
        {
            /* Set the disable value to false -- we need the mapper */
            RtlInitUnicodeString(&KeyString, L"DisableFirmwareMapper");
            Status = ZwSetValueKey(KeyHandle,
                                   &KeyString,
                                   0,
                                   REG_DWORD,
                                   &Value,
                                   sizeof(Value));
 
            /* Close subkey */
            ZwClose(KeyHandle);
        }
    }
 
    /* Return status */
    return Status;
}

Referenced by HalpReportResourceUsage().

HalpOpenRegistryKey()

NTSTATUS NTAPI HalpOpenRegistryKey	(	IN PHANDLE	KeyHandle,
		IN HANDLE	RootKey,
		IN PUNICODE_STRING	KeyName,
		IN ACCESS_MASK	DesiredAccess,
		IN BOOLEAN	Create
	)

Definition at line 108 of file misc.c.

{
    NTSTATUS Status;
    ULONG Disposition;
    OBJECT_ATTRIBUTES ObjectAttributes;
 
    /* Setup the attributes we received */
    InitializeObjectAttributes(&ObjectAttributes,
                               KeyName,
                               OBJ_CASE_INSENSITIVE,
                               RootKey,
                               NULL);
 
    /* What to do? */
    if ( Create )
    {
        /* Create the key */
        Status = ZwCreateKey(KeyHandle,
                             DesiredAccess,
                             &ObjectAttributes,
                             0,
                             NULL,
                             REG_OPTION_VOLATILE,
                             &Disposition);
    }
    else
    {
        /* Open the key */
        Status = ZwOpenKey(KeyHandle, DesiredAccess, &ObjectAttributes);
    }
 
    /* We're done */
    return Status;
}

Referenced by HalpMarkAcpiHal(), HalpMarkChipsetDecode(), HalpRegisterPciDebuggingDeviceInfo(), and HalpReportSerialNumber().

HalpReportSerialNumber()

VOID NTAPI HalpReportSerialNumber

(

VOID

)

Definition at line 30 of file misc.c.

{
    NTSTATUS Status;
    UNICODE_STRING KeyString;
    HANDLE Handle;
 
    /* Make sure there is a serial number */
    if (!HalpSerialLen) return;
 
    /* Open the system key */
    RtlInitUnicodeString(&KeyString, L"\\Registry\\Machine\\Hardware\\Description\\System");
    Status = HalpOpenRegistryKey(&Handle, 0, &KeyString, KEY_ALL_ACCESS, FALSE);
    if (NT_SUCCESS(Status))
    {
        /* Add the serial number */
        RtlInitUnicodeString(&KeyString, L"Serial Number");
        ZwSetValueKey(Handle,
                      &KeyString,
                      0,
                      REG_BINARY,
                      HalpSerialNumber,
                      HalpSerialLen);
 
        /* Close the handle */
        ZwClose(Handle);
    }
}

Referenced by HalpReportResourceUsage().

HalSystemVectorDispatchEntry()

UCHAR FASTCALL HalSystemVectorDispatchEntry	(	IN ULONG	Vector,
		OUT PKINTERRUPT_ROUTINE **	FlatDispatch,
		OUT PKINTERRUPT_ROUTINE *	NoConnection
	)

Definition at line 226 of file misc.c.

{
    //
    // Not implemented on x86
    //
    return 0;
}

KeFlushWriteBuffer()

VOID NTAPI KeFlushWriteBuffer

(

VOID

)

Definition at line 241 of file misc.c.

{
    //
    // Not implemented on x86
    //
    return;
}

Variable Documentation

HalpApicInfoTable

HALP_APIC_INFO_TABLE HalpApicInfoTable

Definition at line 19 of file misc.c.

Referenced by ApicInitializeIOApic(), HalpGetInputPolarity(), HalpMadtAddInterruptOverride(), HalpMadtAddIoApic(), HalpMadtAddProcessor(), HalpMadtPlaceBootProcessor(), HalpParseApicTables(), HalpPrintApicTables(), and HalStartNextProcessor().

HalpSerialLen

UCHAR HalpSerialLen

Definition at line 21 of file misc.c.

Referenced by HalpReportSerialNumber().

HalpSerialNumber

CHAR HalpSerialNumber[31]

Definition at line 22 of file misc.c.

Referenced by HalpReportSerialNumber().