misc.c File Reference

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

Include dependency graph for misc.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
INIT_FUNCTION VOID NTAPI	HalpReportSerialNumber (VOID)
INIT_FUNCTION 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)
VOID NTAPI	HalHandleNMI (IN PVOID NmiInfo)
UCHAR FASTCALL	HalSystemVectorDispatchEntry (IN ULONG Vector, OUT PKINTERRUPT_ROUTINE **FlatDispatch, OUT PKINTERRUPT_ROUTINE *NoConnection)
VOID NTAPI	KeFlushWriteBuffer (VOID)

Variables
BOOLEAN	HalpNMIInProgress
UCHAR	HalpSerialLen
CHAR	HalpSerialNumber [31]

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 12 of file misc.c.

Function Documentation

HalHandleNMI()

VOID NTAPI HalHandleNMI

(

IN PVOID

NmiInfo

)

Definition at line 229 of file misc.c.

{
#ifndef _MINIHAL_
    SYSTEM_CONTROL_PORT_B_REGISTER SystemControl;

    //
    // Don't recurse
    //
    if (HalpNMIInProgress++) ERROR_DBGBREAK();

    //
    // Read the system control register B
    //
    SystemControl.Bits = __inbyte(SYSTEM_CONTROL_PORT_B);

    //
    // Switch to boot vieo
    //
    if (InbvIsBootDriverInstalled())
    {
        //
        // Acquire ownership
        //
        InbvAcquireDisplayOwnership();
        InbvResetDisplay();

        //
        // Fill the screen
        //
        InbvSolidColorFill(0, 0, 639, 479, 1);
        InbvSetScrollRegion(0, 0, 639, 479);

        //
        // Enable text
        //
        InbvSetTextColor(15);
        InbvInstallDisplayStringFilter(NULL);
        InbvEnableDisplayString(TRUE);
    }

    //
    // Display NMI failure string
    //
    InbvDisplayString("\r\n*** Hardware Malfunction\r\n\r\n");
    InbvDisplayString("Call your hardware vendor for support\r\n\r\n");

    //
    // Check for parity error
    //
    if (SystemControl.ParityCheck)
    {
        //
        // Display message
        //
        InbvDisplayString("NMI: Parity Check / Memory Parity Error\r\n");
    }

    //
    // Check for I/O failure
    //
    if (SystemControl.ChannelCheck)
    {
        //
        // Display message
        //
        InbvDisplayString("NMI: Channel Check / IOCHK\r\n");
    }

    //
    // Check for EISA systems
    //
    if (HalpBusType == MACHINE_TYPE_EISA)
    {
        //
        // FIXME: Not supported
        //
        UNIMPLEMENTED;
    }

    //
    // Halt the system
    //
    InbvDisplayString("\r\n*** The system has halted ***\r\n");


    //
    // Enter the debugger if possible
    //
    KiBugCheckData[0] = (ULONG_PTR)KeServiceDescriptorTable; /* NMI Corruption? */
    //if (!(KdDebuggerNotPresent) && (KdDebuggerEnabled)) KeEnterKernelDebugger();
#endif
    //
    // Freeze the system
    //
    while (TRUE);
}

HalpCheckPowerButton()

VOID NTAPI HalpCheckPowerButton

(

VOID

)

Definition at line 153 of file misc.c.

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

HalpFlushTLB()

VOID NTAPI HalpFlushTLB

(

VOID

)

Definition at line 163 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()

INIT_FUNCTION NTSTATUS NTAPI HalpMarkAcpiHal

(

VOID

)

Definition at line 64 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 111 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(), and HalpReportSerialNumber().

HalpReportSerialNumber()

INIT_FUNCTION VOID NTAPI HalpReportSerialNumber

(

VOID

)

Definition at line 33 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 331 of file misc.c.

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

KeFlushWriteBuffer()

VOID NTAPI KeFlushWriteBuffer

(

VOID

)

Definition at line 346 of file misc.c.

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

Variable Documentation

HalpNMIInProgress

BOOLEAN HalpNMIInProgress

Definition at line 22 of file misc.c.

Referenced by HalHandleNMI(), and HalpRestoreTrapHandlers().

HalpSerialLen

UCHAR HalpSerialLen

Definition at line 24 of file misc.c.

Referenced by HalpReportSerialNumber().

HalpSerialNumber

CHAR HalpSerialNumber[31]

Definition at line 25 of file misc.c.

Referenced by HalpReportSerialNumber().