mmx86.c File Reference

#include "bl.h"
#include "bcd.h"

Include dependency graph for mmx86.c:

Go to the source code of this file.

Macros
#define	PTE_BASE   0xC0000000
#define	MiAddressToPte(x)   ((PMMPTE)(((((ULONG)(x)) >> 12) << 2) + (ULONG_PTR)MmPteBase))
#define	MiAddressToPde(x)   ((PMMPDE)(((((ULONG)(x)) >> 22) << 2) + (ULONG_PTR)MmPdeBase))
#define	MiAddressToPteOffset(x)   ((((ULONG)(x)) << 10) >> 22)
#define	MiAddressToPdeOffset(x)   (((ULONG)(x)) / (1024 * PAGE_SIZE))

Functions
BOOLEAN	BlMmIsTranslationEnabled (VOID)
VOID	MmArchNullFunction (VOID)
VOID	MmDefRelocateSelfMap (VOID)
NTSTATUS	MmDefMoveVirtualAddressRange (_In_ PVOID DestinationAddress, _In_ PVOID SourceAddress, _In_ ULONGLONG Size)
NTSTATUS	MmDefZeroVirtualAddressRange (_In_ PVOID DestinationAddress, _In_ ULONGLONG Size)
BOOLEAN	MmArchTranslateVirtualAddress (_In_ PVOID VirtualAddress, _Out_opt_ PPHYSICAL_ADDRESS PhysicalAddress, _Out_opt_ PULONG CachingFlags)
VOID	MmDefpDestroySelfMap (VOID)
VOID	MmDefpFlushTlbEntry (_In_ PVOID VirtualAddress)
VOID	MmDefpFlushTlb (VOID)
NTSTATUS	MmDefpUnmapVirtualAddress (_In_ PVOID VirtualAddress, _In_ ULONG Size)
NTSTATUS	MmDefpRemapVirtualAddress (_In_ PPHYSICAL_ADDRESS PhysicalAddress, _Out_ PVOID VirtualAddress, _In_ ULONG Size, _In_ ULONG CacheAttributes)
NTSTATUS	MmDefpMapPhysicalAddress (_In_ PHYSICAL_ADDRESS PhysicalAddress, _In_ PVOID VirtualAddress, _In_ ULONG Size, _In_ ULONG CacheAttributes)
BOOLEAN	MmDefpTranslateVirtualAddress (_In_ PVOID VirtualAddress, _Out_ PPHYSICAL_ADDRESS PhysicalAddress, _Out_opt_ PULONG CacheAttributes)
NTSTATUS	MmMapPhysicalAddress (_Inout_ PPHYSICAL_ADDRESS PhysicalAddressPtr, _Inout_ PVOID *VirtualAddressPtr, _Inout_ PULONGLONG SizePtr, _In_ ULONG CacheAttributes)
NTSTATUS	Mmx86MapInitStructure (_In_ PVOID VirtualAddress, _In_ ULONGLONG Size, _In_ PHYSICAL_ADDRESS PhysicalAddress)
VOID	MmMdDbgDumpList (_In_ PBL_MEMORY_DESCRIPTOR_LIST DescriptorList, _In_opt_ ULONG MaxCount)
NTSTATUS	Mmx86pMapMemoryRegions (_In_ ULONG Phase, _In_ PBL_MEMORY_DATA MemoryData)
NTSTATUS	Mmx86InitializeMemoryMap (_In_ ULONG Phase, _In_ PBL_MEMORY_DATA MemoryData)
NTSTATUS	MmDefInitializeTranslation (_In_ PBL_MEMORY_DATA MemoryData, _In_ BL_TRANSLATION_TYPE TranslationType)
NTSTATUS	MmArchInitialize (_In_ ULONG Phase, _In_ PBL_MEMORY_DATA MemoryData, _In_ BL_TRANSLATION_TYPE TranslationType, _In_ BL_TRANSLATION_TYPE RequestedTranslationType)

Variables
ULONG_PTR	MmArchKsegBase
ULONG_PTR	MmArchKsegBias
ULONG	MmArchLargePageSize
BL_ADDRESS_RANGE	MmArchKsegAddressRange
ULONG_PTR	MmArchTopOfApplicationAddressSpace
PHYSICAL_ADDRESS	Mmx86SelfMapBase
ULONG	MmDeferredMappingCount
PMMPTE	MmPdpt
PULONG	MmArchReferencePage
PVOID	MmPteBase
PVOID	MmPdeBase
ULONG	MmArchReferencePageSize
PBL_MM_TRANSLATE_VIRTUAL_ADDRESS	Mmx86TranslateVirtualAddress
PBL_MM_MAP_PHYSICAL_ADDRESS	Mmx86MapPhysicalAddress
PBL_MM_REMAP_VIRTUAL_ADDRESS	Mmx86RemapVirtualAddress
PBL_MM_UNMAP_VIRTUAL_ADDRESS	Mmx86UnmapVirtualAddress
PBL_MM_FLUSH_TLB	Mmx86FlushTlb
PBL_MM_FLUSH_TLB_ENTRY	Mmx86FlushTlbEntry
PBL_MM_DESTROY_SELF_MAP	Mmx86DestroySelfMap
PBL_MM_RELOCATE_SELF_MAP	BlMmRelocateSelfMap
PBL_MM_FLUSH_TLB	BlMmFlushTlb
PBL_MM_MOVE_VIRTUAL_ADDRESS_RANGE	BlMmMoveVirtualAddressRange
PBL_MM_ZERO_VIRTUAL_ADDRESS_RANGE	BlMmZeroVirtualAddressRange

Macro Definition Documentation

MiAddressToPde

#define MiAddressToPde

(

x

)

((PMMPDE)(((((ULONG)(x)) >> 22) << 2) + (ULONG_PTR)MmPdeBase))

Definition at line 20 of file mmx86.c.

MiAddressToPdeOffset

#define MiAddressToPdeOffset

(

x

)

(((ULONG)(x)) / (1024 * PAGE_SIZE))

Definition at line 22 of file mmx86.c.

MiAddressToPte

#define MiAddressToPte

(

x

)

((PMMPTE)(((((ULONG)(x)) >> 12) << 2) + (ULONG_PTR)MmPteBase))

Definition at line 19 of file mmx86.c.

MiAddressToPteOffset

#define MiAddressToPteOffset

(

x

)

((((ULONG)(x)) << 10) >> 22)

Definition at line 21 of file mmx86.c.

PTE_BASE

#define PTE_BASE   0xC0000000

Definition at line 14 of file mmx86.c.

Function Documentation

BlMmIsTranslationEnabled()

BOOLEAN BlMmIsTranslationEnabled

(

VOID

)

Definition at line 57 of file mmx86.c.

{
    /* Return if paging is on */
    return ((CurrentExecutionContext) &&
            (CurrentExecutionContext->ContextFlags & BL_CONTEXT_PAGING_ON));
}

Referenced by MmDefInitializeTranslation(), MmDefpMapPhysicalAddress(), MmDefpTranslateVirtualAddress(), and MmMapPhysicalAddress().

MmArchInitialize()

NTSTATUS MmArchInitialize	(	_In_ ULONG	Phase,
		_In_ PBL_MEMORY_DATA	MemoryData,
		_In_ BL_TRANSLATION_TYPE	TranslationType,
		_In_ BL_TRANSLATION_TYPE	RequestedTranslationType
	)

Definition at line 1028 of file mmx86.c.

{
    NTSTATUS Status;
    ULONGLONG IncreaseUserVa, PerfCounter, CpuRandom;
    CPU_INFO CpuInfo;

    /* For phase 2, just map deferred regions */
    if (Phase != 1)
    {
        return Mmx86pMapMemoryRegions(2, MemoryData);
    }

    /* What translation type are we switching to? */
    switch (RequestedTranslationType)
    {
        /* Physical memory */
        case BlNone:

            /* Initialize everything to default/null values */
            MmArchLargePageSize = 1;
            MmArchKsegBase = 0;
            MmArchKsegBias = 0;
            MmArchKsegAddressRange.Minimum = 0;
            MmArchKsegAddressRange.Maximum = (ULONGLONG)~0;
            MmArchTopOfApplicationAddressSpace = 0;
            Mmx86SelfMapBase.QuadPart = 0;

            /* Set stub functions */
            BlMmRelocateSelfMap = MmArchNullFunction;
            BlMmFlushTlb = MmArchNullFunction;

            /* Set success */
            Status = STATUS_SUCCESS;
            break;

        case BlVirtual:

            /* Set the large page size to 1024 pages (4MB) */
            MmArchLargePageSize = (4 * 1024 * 1024) / PAGE_SIZE;

            /* Check if /USERVA option was used */
            Status = BlGetBootOptionInteger(BlpApplicationEntry.BcdData,
                                            BcdOSLoaderInteger_IncreaseUserVa,
                                            &IncreaseUserVa);
            if (NT_SUCCESS(Status) && (IncreaseUserVa))
            {
                /* Yes -- load the kernel at 0xE0000000 instead */
                MmArchKsegBase = 0xE0000000;
            }
            else
            {
                /* Nope, load at the standard 2GB split */
                MmArchKsegBase = 0x80000000;
            }

            /* Check if CPUID 01h is supported */
            CpuRandom = 0;
            if (BlArchIsCpuIdFunctionSupported(1))
            {
                /* Call it */
                BlArchCpuId(1, 0, &CpuInfo);

                /* Check if RDRAND is supported */
                if (CpuInfo.Ecx & 0x40000000)
                {
                    EfiPrintf(L"Your CPU can do RDRAND! Good for you!\r\n");
                    CpuRandom = 0;
                }
            }

            /* Read the TSC */
            PerfCounter = BlArchGetPerformanceCounter();
            PerfCounter >>= 4;
            _rotl16(PerfCounter, 5);

            /* Set the address range */
            MmArchKsegAddressRange.Minimum = 0;
            MmArchKsegAddressRange.Maximum = (ULONGLONG)~0;

            /* Set the KASLR bias */
            MmArchKsegBias = ((PerfCounter ^ CpuRandom) & 0xFFF) << 12;
            MmArchKsegBias = 0;
            MmArchKsegBase += MmArchKsegBias;

            /* Set the kernel range */
            MmArchKsegAddressRange.Minimum = MmArchKsegBase;
            MmArchKsegAddressRange.Maximum = (ULONGLONG)~0;

            /* Set the boot application top maximum */
            MmArchTopOfApplicationAddressSpace = 0x70000000 - 1; // Windows bug

            /* Initialize virtual address space translation */
            Status = MmDefInitializeTranslation(MemoryData, TranslationType);
            if (NT_SUCCESS(Status))
            {
                /* Set stub functions */
                BlMmRelocateSelfMap = MmDefRelocateSelfMap;
                BlMmFlushTlb = Mmx86FlushTlb;
                BlMmMoveVirtualAddressRange = MmDefMoveVirtualAddressRange;
                BlMmZeroVirtualAddressRange = MmDefZeroVirtualAddressRange;
            }
            break;

        case BlPae:

            /* We don't support PAE */
            Status = STATUS_NOT_SUPPORTED;
            break;

        default:

            /* Invalid architecture type*/
            Status = STATUS_INVALID_PARAMETER;
            break;
    }

    /* Back to caller */
    return Status;
}

MmArchNullFunction()

VOID MmArchNullFunction

(

VOID

)

Definition at line 67 of file mmx86.c.

{
    /* Nothing to do */
    return;
}

Referenced by MmArchInitialize().

MmArchTranslateVirtualAddress()

BOOLEAN MmArchTranslateVirtualAddress	(	_In_ PVOID	VirtualAddress,
		_Out_opt_ PPHYSICAL_ADDRESS	PhysicalAddress,
		_Out_opt_ PULONG	CachingFlags
	)

Definition at line 108 of file mmx86.c.

{
    PBL_MEMORY_DESCRIPTOR Descriptor;

    /* Check if paging is on */
    if ((CurrentExecutionContext) &&
        (CurrentExecutionContext->ContextFlags & BL_CONTEXT_PAGING_ON))
    {
        /* Yes -- we have to translate this from virtual */
        return Mmx86TranslateVirtualAddress(VirtualAddress,
                                            PhysicalAddress,
                                            CachingFlags);
    }

    /* Look in all descriptors except truncated and firmware ones */
    Descriptor = MmMdFindDescriptor(BL_MM_INCLUDE_NO_FIRMWARE_MEMORY &
                                    ~BL_MM_INCLUDE_TRUNCATED_MEMORY,
                                    BL_MM_REMOVE_PHYSICAL_REGION_FLAG,
                                    (ULONG_PTR)VirtualAddress >> PAGE_SHIFT);

    /* Return the virtual address as the physical address */
    if (PhysicalAddress)
    {
        PhysicalAddress->HighPart = 0;
        PhysicalAddress->LowPart = (ULONG_PTR)VirtualAddress;
    }

    /* There's no caching on physical memory */
    if (CachingFlags)
    {
        *CachingFlags = 0;
    }

    /* Success is if we found a descriptor */
    return Descriptor != NULL;
}

Referenced by MmMapPhysicalAddress().

MmDefInitializeTranslation()

NTSTATUS MmDefInitializeTranslation	(	_In_ PBL_MEMORY_DATA	MemoryData,
		_In_ BL_TRANSLATION_TYPE	TranslationType
	)

Definition at line 857 of file mmx86.c.

{
    NTSTATUS Status;
    PHYSICAL_ADDRESS PhysicalAddress;
    ULONG PdeIndex;

    /* Set the global function pointers for memory translation */
    Mmx86TranslateVirtualAddress = MmDefpTranslateVirtualAddress;
    Mmx86MapPhysicalAddress = MmDefpMapPhysicalAddress;
    Mmx86UnmapVirtualAddress = MmDefpUnmapVirtualAddress;
    Mmx86RemapVirtualAddress = MmDefpRemapVirtualAddress;
    Mmx86FlushTlb = MmDefpFlushTlb;
    Mmx86FlushTlbEntry = MmDefpFlushTlbEntry;
    Mmx86DestroySelfMap = MmDefpDestroySelfMap;

    /* Check what mode we're currently in */
    if (TranslationType == BlVirtual)
    {
        EfiPrintf(L"Virtual->Virtual not yet supported\r\n");
        return STATUS_NOT_IMPLEMENTED;
    }
    else if (TranslationType != BlNone)
    {
        /* Not even Windows supports PAE->Virtual downgrade */
        return STATUS_NOT_IMPLEMENTED;
    }

    /* The None->Virtual case */
    MmPdpt = NULL;
    Mmx86SelfMapBase.QuadPart = 0;
    MmArchReferencePage = NULL;

    /* Truncate all memory above 4GB so that we don't use it */
    Status = MmPaTruncateMemory(0x100000);
    if (!NT_SUCCESS(Status))
    {
        goto Failure;
    }

    /* Allocate a page directory */
    Status = MmPapAllocatePhysicalPagesInRange(&PhysicalAddress,
                                               BlLoaderPageDirectory,
                                               1,
                                               0,
                                               0,
                                               &MmMdlUnmappedAllocated,
                                               0,
                                               0);
    if (!NT_SUCCESS(Status))
    {
        goto Failure;
    }

    /* Zero out the page directory */
    MmPdpt = (PVOID)PhysicalAddress.LowPart;
    RtlZeroMemory(MmPdpt, PAGE_SIZE);

    /* Set the page size */
    MmArchReferencePageSize = PAGE_SIZE;

    /* Allocate the self-map page */
    Status = MmPapAllocatePhysicalPagesInRange(&PhysicalAddress,
                                               BlLoaderReferencePage,
                                               1,
                                               0,
                                               0,
                                               &MmMdlUnmappedAllocated,
                                               0,
                                               0);
    if (!NT_SUCCESS(Status))
    {
        goto Failure;
    }

    /* Set the reference page */
    MmArchReferencePage = (PVOID)PhysicalAddress.LowPart;

    /* Zero it out */
    RtlZeroMemory(MmArchReferencePage, MmArchReferencePageSize);

    /* Allocate 4MB worth of self-map pages */
    Status = MmPaReserveSelfMapPages(&Mmx86SelfMapBase, 
                                     (4 * 1024 * 1024) >> PAGE_SHIFT,
                                     (4 * 1024 * 1024) >> PAGE_SHIFT);
    if (!NT_SUCCESS(Status))
    {
        goto Failure;
    }

    /* Zero them out */
    RtlZeroMemory((PVOID)Mmx86SelfMapBase.LowPart, 4 * 1024 * 1024);
    EfiPrintf(L"PDPT at 0x%p Reference Page at 0x%p Self-map at 0x%p\r\n",
              MmPdpt, MmArchReferencePage, Mmx86SelfMapBase.LowPart);

    /* Align PTE base to 4MB region */
    MmPteBase = (PVOID)(Mmx86SelfMapBase.LowPart & ~0x3FFFFF);

    /* The PDE is the PTE of the PTE base */
    MmPdeBase = MiAddressToPte(MmPteBase);
    PdeIndex = MiAddressToPdeOffset(MmPdeBase);
    MmPdpt[PdeIndex].u.Hard.Valid = 1;
    MmPdpt[PdeIndex].u.Hard.Write = 1;
    MmPdpt[PdeIndex].u.Hard.PageFrameNumber = (ULONG_PTR)MmPdpt >> PAGE_SHIFT;
    MmArchReferencePage[PdeIndex]++;

    /* Remove PTE_BASE from free virtual memory */
    Status = MmMdRemoveRegionFromMdlEx(&MmMdlFreeVirtual,
                                       BL_MM_REMOVE_VIRTUAL_REGION_FLAG,
                                       PTE_BASE >> PAGE_SHIFT,
                                       (4 * 1024 * 1024) >> PAGE_SHIFT,
                                       0);
    if (!NT_SUCCESS(Status))
    {
        goto Failure;
    }

    /* Remove HAL_HEAP from free virtual memory */
    Status = MmMdRemoveRegionFromMdlEx(&MmMdlFreeVirtual,
                                       BL_MM_REMOVE_VIRTUAL_REGION_FLAG,
                                       MM_HAL_VA_START >> PAGE_SHIFT,
                                       (4 * 1024 * 1024) >> PAGE_SHIFT,
                                       0);
    if (!NT_SUCCESS(Status))
    {
        goto Failure;
    }

    /* Initialize the virtual->physical memory mappings */
    Status = Mmx86InitializeMemoryMap(1, MemoryData);
    if (!NT_SUCCESS(Status))
    {
        goto Failure;
    }

    /* Turn on paging with the new CR3 */
    __writecr3((ULONG_PTR)MmPdpt);
    BlpArchEnableTranslation();
    EfiPrintf(L"Paging... %d\r\n", BlMmIsTranslationEnabled());

    /* Return success */
    return Status;

Failure:
    /* Free reference page if we allocated it */
    if (MmArchReferencePage)
    {
        PhysicalAddress.QuadPart = (ULONG_PTR)MmArchReferencePage;
        BlMmFreePhysicalPages(PhysicalAddress);
    }

    /* Free page directory if we allocated it */
    if (MmPdpt)
    {
        PhysicalAddress.QuadPart = (ULONG_PTR)MmPdpt;
        BlMmFreePhysicalPages(PhysicalAddress);
    }

    /* Free the self map if we allocated it */
    if (Mmx86SelfMapBase.QuadPart)
    {
        MmPaReleaseSelfMapPages(Mmx86SelfMapBase);
    }

    /* All done */
    return Status;
}

Referenced by MmArchInitialize().

MmDefMoveVirtualAddressRange()

NTSTATUS MmDefMoveVirtualAddressRange	(	_In_ PVOID	DestinationAddress,
		_In_ PVOID	SourceAddress,
		_In_ ULONGLONG	Size
	)

Definition at line 87 of file mmx86.c.

{
    EfiPrintf(L"Supposed to move shit\r\n");
    return STATUS_NOT_IMPLEMENTED;
}

Referenced by MmArchInitialize().

MmDefpDestroySelfMap()

VOID MmDefpDestroySelfMap

(

VOID

)

Definition at line 150 of file mmx86.c.

{
    EfiPrintf(L"No destroy\r\n");
}

Referenced by MmDefInitializeTranslation().

MmDefpFlushTlb()

VOID MmDefpFlushTlb

(

VOID

)

Definition at line 167 of file mmx86.c.

{
    /* Flush the TLB */
    __writecr3(__readcr3());
}

Referenced by MmDefInitializeTranslation().

MmDefpFlushTlbEntry()

VOID MmDefpFlushTlbEntry

(

_In_ PVOID

VirtualAddress

)

Definition at line 158 of file mmx86.c.

{
    /* Flush the TLB */
    __invlpg(VirtualAddress);
}

Referenced by MmDefInitializeTranslation().

MmDefpMapPhysicalAddress()

NTSTATUS MmDefpMapPhysicalAddress	(	_In_ PHYSICAL_ADDRESS	PhysicalAddress,
		_In_ PVOID	VirtualAddress,
		_In_ ULONG	Size,
		_In_ ULONG	CacheAttributes
	)

Definition at line 198 of file mmx86.c.

{
    BOOLEAN Enabled;
    ULONG i, PageCount, PdeOffset;
    ULONGLONG CurrentAddress;
    PMMPDE Pde;
    PMMPTE Pte;
    PMMPTE PageTable;
    PHYSICAL_ADDRESS PageTableAddress;
    NTSTATUS Status;

    /* Check if paging is on yet */
    Enabled = BlMmIsTranslationEnabled();

    /* Get the physical address aligned */
    CurrentAddress = (PhysicalAddress.QuadPart >> PAGE_SHIFT) << PAGE_SHIFT;

    /* Get the number of pages and loop through each one */
    PageCount = Size >> PAGE_SHIFT;
    for (i = 0; i < PageCount; i++)
    {
        /* Check if translation already exists for this page */
        if (Mmx86TranslateVirtualAddress(VirtualAddress, NULL, NULL))
        {
            /* Ignore it and move to the next one */
            VirtualAddress = (PVOID)((ULONG_PTR)VirtualAddress + PAGE_SIZE);
            CurrentAddress += PAGE_SIZE;
            continue;
        }

        /* Get the PDE offset */
        PdeOffset = MiAddressToPdeOffset(VirtualAddress);

        /* Check if paging is actually turned on */
        if (Enabled)
        {
            /* Get the PDE entry using the self-map */
            Pde = MiAddressToPde(VirtualAddress);
        }
        else
        {
            /* Get it using our physical mappings */
            Pde = &MmPdpt[PdeOffset];
            PageTable = (PMMPDE)(Pde->u.Hard.PageFrameNumber << PAGE_SHIFT);
        }

        /* Check if we don't yet have a PDE */
        if (!Pde->u.Hard.Valid)
        {
            /* Allocate a page table */
            Status = MmPapAllocatePhysicalPagesInRange(&PageTableAddress,
                                                       BlLoaderPageDirectory,
                                                       1,
                                                       0,
                                                       0,
                                                       &MmMdlUnmappedAllocated,
                                                       0,
                                                       0);
            if (!NT_SUCCESS(Status))
            {
                EfiPrintf(L"PDE alloc failed!\r\n");
                EfiStall(1000000);
                return STATUS_NO_MEMORY;
            }

            /* This is our page table */
            PageTable = (PVOID)(ULONG_PTR)PageTableAddress.QuadPart;

            /* Build the PDE for it */
            Pde->u.Hard.PageFrameNumber = PageTableAddress.QuadPart >> PAGE_SHIFT;
            Pde->u.Hard.Write = 1;
            Pde->u.Hard.CacheDisable = 1;
            Pde->u.Hard.WriteThrough = 1;
            Pde->u.Hard.Valid = 1;

            /* Check if paging is enabled */
            if (Enabled)
            {
                /* Then actually, get the page table's virtual address */
                PageTable = (PVOID)PAGE_ROUND_DOWN(MiAddressToPte(VirtualAddress));

                /* Flush the TLB */
                Mmx86FlushTlb();
            }

            /* Zero out the page table */
            RtlZeroMemory(PageTable, PAGE_SIZE);

            /* Reset caching attributes now */
            Pde->u.Hard.CacheDisable = 0;
            Pde->u.Hard.WriteThrough = 0;

            /* Check for paging again */
            if (Enabled)
            {
                /* Flush the TLB entry for the page table only */
                Mmx86FlushTlbEntry(PageTable);
            }
        }

        /* Add a reference to this page table */
        MmArchReferencePage[PdeOffset]++;

        /* Check if a physical address was given */
        if (PhysicalAddress.QuadPart != -1)
        {
            /* Check if paging is turned on */
            if (Enabled)
            {
                /* Get the PTE using the self-map */
                Pte = MiAddressToPte(VirtualAddress);
            }
            else
            {
                /* Get the PTE using physical addressing */
                Pte = &PageTable[MiAddressToPteOffset(VirtualAddress)];
            }

            /* Build a valid PTE for it */
            Pte->u.Hard.PageFrameNumber = CurrentAddress >> PAGE_SHIFT;
            Pte->u.Hard.Write = 1;
            Pte->u.Hard.Valid = 1;

            /* Check if this is uncached */
            if (CacheAttributes == BlMemoryUncached)
            {
                /* Set the flags */
                Pte->u.Hard.CacheDisable = 1;
                Pte->u.Hard.WriteThrough = 1;
            }
            else if (CacheAttributes == BlMemoryWriteThrough)
            {
                /* It's write-through, set the flag */
                Pte->u.Hard.WriteThrough = 1;
            }
        }

        /* Move to the next physical/virtual address */
        VirtualAddress = (PVOID)((ULONG_PTR)VirtualAddress + PAGE_SIZE);
        CurrentAddress += PAGE_SIZE;
    }

    /* All done! */
    return STATUS_SUCCESS;
}

Referenced by MmDefInitializeTranslation().

MmDefpRemapVirtualAddress()

NTSTATUS MmDefpRemapVirtualAddress	(	_In_ PPHYSICAL_ADDRESS	PhysicalAddress,
		_Out_ PVOID	VirtualAddress,
		_In_ ULONG	Size,
		_In_ ULONG	CacheAttributes
	)

Definition at line 186 of file mmx86.c.

{
    EfiPrintf(L"No remap\r\n");
    return STATUS_NOT_IMPLEMENTED;
}

Referenced by MmDefInitializeTranslation().

MmDefpTranslateVirtualAddress()

BOOLEAN MmDefpTranslateVirtualAddress	(	_In_ PVOID	VirtualAddress,
		_Out_ PPHYSICAL_ADDRESS	PhysicalAddress,
		_Out_opt_ PULONG	CacheAttributes
	)

Definition at line 350 of file mmx86.c.

{
    PMMPDE Pde;
    PMMPTE Pte;
    PMMPTE PageTable;
    BOOLEAN Enabled;

    /* Is there no page directory yet? */
    if (!MmPdpt)
    {
        return FALSE;
    }

    /* Is paging enabled? */
    Enabled = BlMmIsTranslationEnabled();

    /* Check if paging is actually turned on */
    if (Enabled)
    {
        /* Get the PDE entry using the self-map */
        Pde = MiAddressToPde(VirtualAddress);
    }
    else
    {
        /* Get it using our physical mappings */
        Pde = &MmPdpt[MiAddressToPdeOffset(VirtualAddress)];
    }

    /* Is the PDE valid? */
    if (!Pde->u.Hard.Valid)
    {
        return FALSE;
    }

    /* Check if paging is turned on */
    if (Enabled)
    {
        /* Get the PTE using the self-map */
        Pte = MiAddressToPte(VirtualAddress);
    }
    else
    {
        /* Get the PTE using physical addressing */
        PageTable = (PMMPTE)(Pde->u.Hard.PageFrameNumber << PAGE_SHIFT);
        Pte = &PageTable[MiAddressToPteOffset(VirtualAddress)];
    }

    /* Is the PTE valid? */
    if (!Pte->u.Hard.Valid)
    {
        return FALSE;
    }

    /* Does caller want the physical address?  */
    if (PhysicalAddress)
    {
        /* Return it */
        PhysicalAddress->QuadPart = (Pte->u.Hard.PageFrameNumber << PAGE_SHIFT) +
                                     BYTE_OFFSET(VirtualAddress);
    }

    /* Does caller want cache attributes? */
    if (CacheAttributes)
    {
        /* Not yet -- lie and say it's cached */
        EfiPrintf(L"Cache checking not yet enabled\r\n");
        *CacheAttributes = BlMemoryWriteBack;
    }

    /* It exists! */
    return TRUE;
}

Referenced by MmDefInitializeTranslation().

MmDefpUnmapVirtualAddress()

NTSTATUS MmDefpUnmapVirtualAddress	(	_In_ PVOID	VirtualAddress,
		_In_ ULONG	Size
	)

Definition at line 176 of file mmx86.c.

{
    EfiPrintf(L"No unmap\r\n");
    return STATUS_NOT_IMPLEMENTED;
}

Referenced by MmDefInitializeTranslation().

MmDefRelocateSelfMap()

VOID MmDefRelocateSelfMap

(

VOID

)

Definition at line 76 of file mmx86.c.

{
    if (MmPteBase != (PVOID)PTE_BASE)
    {
        EfiPrintf(L"Supposed to relocate CR3\r\n");
    }
}

Referenced by MmArchInitialize().

MmDefZeroVirtualAddressRange()

NTSTATUS MmDefZeroVirtualAddressRange	(	_In_ PVOID	DestinationAddress,
		_In_ ULONGLONG	Size
	)

Definition at line 98 of file mmx86.c.

{
    EfiPrintf(L"Supposed to zero shit\r\n");
    return STATUS_NOT_IMPLEMENTED;
}

Referenced by MmArchInitialize().

MmMapPhysicalAddress()

NTSTATUS MmMapPhysicalAddress	(	_Inout_ PPHYSICAL_ADDRESS	PhysicalAddressPtr,
		_Inout_ PVOID *	VirtualAddressPtr,
		_Inout_ PULONGLONG	SizePtr,
		_In_ ULONG	CacheAttributes
	)

Definition at line 428 of file mmx86.c.

{
    ULONGLONG Size;
    ULONGLONG PhysicalAddress;
    PVOID VirtualAddress;
    PHYSICAL_ADDRESS TranslatedAddress;
    ULONG_PTR CurrentAddress, VirtualAddressEnd;
    NTSTATUS Status;

    /* Fail if any parameters are missing */
    if (!(PhysicalAddressPtr) || !(VirtualAddressPtr) || !(SizePtr))
    {
        return STATUS_INVALID_PARAMETER;
    }

    /* Fail if the size is over 32-bits */
    Size = *SizePtr;
    if (Size > 0xFFFFFFFF)
    {
        return STATUS_INVALID_PARAMETER;
    }

    /* Nothing to do if we're in physical mode */
    if (MmTranslationType == BlNone)
    {
        return STATUS_SUCCESS;
    }

    /* Can't use virtual memory in real mode */
    if (CurrentExecutionContext->Mode == BlRealMode)
    {
        return STATUS_UNSUCCESSFUL;
    }

    /* Capture the current virtual and physical addresses */
    VirtualAddress = *VirtualAddressPtr;
    PhysicalAddress = PhysicalAddressPtr->QuadPart;

    /* Check if a physical address was requested */
    if (PhysicalAddress != 0xFFFFFFFF)
    {
        /* Round down the base addresses */
        PhysicalAddress = PAGE_ROUND_DOWN(PhysicalAddress);
        VirtualAddress = (PVOID)PAGE_ROUND_DOWN(VirtualAddress);

        /* Round up the size */
        Size = ROUND_TO_PAGES(PhysicalAddressPtr->QuadPart -
                              PhysicalAddress +
                              Size);

        /* Loop every virtual page */
        CurrentAddress = (ULONG_PTR)VirtualAddress;
        VirtualAddressEnd = CurrentAddress + Size - 1;
        while (CurrentAddress < VirtualAddressEnd)
        {
            /* Get the physical page of this virtual page */
            if (MmArchTranslateVirtualAddress((PVOID)CurrentAddress,
                                              &TranslatedAddress,
                                              &CacheAttributes))
            {
                /* Make sure the physical page of the virtual page, matches our page */
                if (TranslatedAddress.QuadPart !=
                    (PhysicalAddress +
                     (CurrentAddress - (ULONG_PTR)VirtualAddress)))
                {
                    /* There is an existing virtual mapping for a different address */
                    EfiPrintf(L"Existing mapping exists: %lx vs %lx\r\n",
                              TranslatedAddress.QuadPart,
                              PhysicalAddress + (CurrentAddress - (ULONG_PTR)VirtualAddress));
                    EfiStall(10000000);
                    return STATUS_INVALID_PARAMETER;
                }
            }

            /* Try the next one */
            CurrentAddress += PAGE_SIZE;
        }
    }

    /* Aactually do the mapping */
    TranslatedAddress.QuadPart = PhysicalAddress;
    Status = Mmx86MapPhysicalAddress(TranslatedAddress,
                                     VirtualAddress,
                                     Size,
                                     CacheAttributes);
    if (!NT_SUCCESS(Status))
    {
        EfiPrintf(L"Failed to map!: %lx\r\n", Status);
        EfiStall(1000000);
        return Status;
    }

    /* Return aligned/fixed up output parameters */
    PhysicalAddressPtr->QuadPart = PhysicalAddress;
    *VirtualAddressPtr = VirtualAddress;
    *SizePtr = Size;
    
    /* Flush the TLB if paging is enabled */
    if (BlMmIsTranslationEnabled())
    {
        Mmx86FlushTlb();
    }

    /* All good! */
    return STATUS_SUCCESS;
}

Referenced by Mmx86MapInitStructure().

MmMdDbgDumpList()

VOID MmMdDbgDumpList	(	_In_ PBL_MEMORY_DESCRIPTOR_LIST	DescriptorList,
		_In_opt_ ULONG	MaxCount
	)

Definition at line 579 of file mmx86.c.

{
    ULONGLONG EndPage, VirtualEndPage;
    PBL_MEMORY_DESCRIPTOR MemoryDescriptor;
    PLIST_ENTRY NextEntry;

    /* If no maximum was provided, use essentially infinite */
    if (MaxCount == 0)
    {
        MaxCount = 0xFFFFFFFF;
    }

    /* Loop the list as long as there's entries and max isn't reached */
    NextEntry = DescriptorList->First->Flink;
    while ((NextEntry != DescriptorList->First) && (MaxCount--))
    {
        /* Get the descriptor */
        MemoryDescriptor = CONTAINING_RECORD(NextEntry,
                                             BL_MEMORY_DESCRIPTOR,
                                             ListEntry);

        /* Get the descriptor end page, and see if it was virtually mapepd */
        EndPage = MemoryDescriptor->BasePage + MemoryDescriptor->PageCount;
        if (MemoryDescriptor->VirtualPage)
        {
            /* Get the virtual end page too, then */
            VirtualEndPage = MemoryDescriptor->VirtualPage +
                             MemoryDescriptor->PageCount;
        }
        else
        {
            VirtualEndPage = 0;
        }

        /* Print out the descriptor, physical range, virtual range, and type */
        EfiPrintf(L"%p - [%08llx-%08llx @ %08llx-%08llx]:%x\r\n",
                    MemoryDescriptor,
                    MemoryDescriptor->BasePage << PAGE_SHIFT,
                    (EndPage << PAGE_SHIFT) - 1,
                    MemoryDescriptor->VirtualPage << PAGE_SHIFT,
                    VirtualEndPage ? (VirtualEndPage << PAGE_SHIFT) - 1 : 0,
                    (ULONG)MemoryDescriptor->Type);

        /* Next entry */
        NextEntry = NextEntry->Flink;
    }
}

Mmx86InitializeMemoryMap()

NTSTATUS Mmx86InitializeMemoryMap	(	_In_ ULONG	Phase,
		_In_ PBL_MEMORY_DATA	MemoryData
	)

Definition at line 784 of file mmx86.c.

{
    ULONG ImageSize;
    PVOID ImageBase;
    KDESCRIPTOR Gdt, Idt;
    NTSTATUS Status;
    PHYSICAL_ADDRESS PhysicalAddress;

    /* If this is phase 2, map the memory regions */
    if (Phase != 1)
    {
        return Mmx86pMapMemoryRegions(Phase, MemoryData);
    }

    /* Get the application image base/size */
    Status = BlGetApplicationBaseAndSize(&ImageBase, &ImageSize);
    if (!NT_SUCCESS(Status))
    {
        return Status;
    }

    /* Map the image back at the same place */
    PhysicalAddress.QuadPart = (ULONG_PTR)ImageBase;
    Status = Mmx86MapInitStructure(ImageBase, ImageSize, PhysicalAddress);
    if (!NT_SUCCESS(Status))
    {
        return Status;
    }

    /* Map the first 4MB of memory */
    PhysicalAddress.QuadPart = 0;
    Status = Mmx86MapInitStructure(NULL, 4 * 1024 * 1024, PhysicalAddress);
    if (!NT_SUCCESS(Status))
    {
        return Status;
    }

    /* Map the GDT */
    _sgdt(&Gdt.Limit);
    PhysicalAddress.QuadPart = Gdt.Base;
    Status = Mmx86MapInitStructure((PVOID)Gdt.Base, Gdt.Limit + 1, PhysicalAddress);
    if (!NT_SUCCESS(Status))
    {
        return Status;
    }

    /* Map the IDT */
    __sidt(&Idt.Limit);
    PhysicalAddress.QuadPart = Idt.Base;
    Status = Mmx86MapInitStructure((PVOID)Idt.Base, Idt.Limit + 1, PhysicalAddress);
    if (!NT_SUCCESS(Status))
    {
        return Status;
    }

    /* Map the reference page */
    PhysicalAddress.QuadPart = (ULONG_PTR)MmArchReferencePage;
    Status = Mmx86MapInitStructure(MmArchReferencePage,
                                   MmArchReferencePageSize,
                                   PhysicalAddress);
    if (!NT_SUCCESS(Status))
    {
        return Status;
    }

    /* More to do */
    return Mmx86pMapMemoryRegions(Phase, MemoryData);
}

Referenced by MmDefInitializeTranslation().

Mmx86MapInitStructure()

NTSTATUS Mmx86MapInitStructure	(	_In_ PVOID	VirtualAddress,
		_In_ ULONGLONG	Size,
		_In_ PHYSICAL_ADDRESS	PhysicalAddress
	)

Definition at line 541 of file mmx86.c.

{
    NTSTATUS Status;
    
    /* Make a virtual mapping for this physical address */
    Status = MmMapPhysicalAddress(&PhysicalAddress, &VirtualAddress, &Size, 0);
    if (!NT_SUCCESS(Status))
    {
        return Status;
    }

    /* Nothing else to do if we're not in paging mode */
    if (MmTranslationType == BlNone)
    {
        return STATUS_SUCCESS;
    }

    /* Otherwise, remove this region from the list of free virtual ranges */
    Status = MmMdRemoveRegionFromMdlEx(&MmMdlFreeVirtual,
                                       BL_MM_REMOVE_VIRTUAL_REGION_FLAG,
                                       (ULONG_PTR)VirtualAddress >> PAGE_SHIFT,
                                       Size >> PAGE_SHIFT,
                                       0);
    if (!NT_SUCCESS(Status))
    {
        /* Unmap the address if that failed */
        MmUnmapVirtualAddress(&VirtualAddress, &Size);
    }

    /* Return back to caller */
    return Status;
}

Referenced by Mmx86InitializeMemoryMap(), and Mmx86pMapMemoryRegions().

Mmx86pMapMemoryRegions()

NTSTATUS Mmx86pMapMemoryRegions	(	_In_ ULONG	Phase,
		_In_ PBL_MEMORY_DATA	MemoryData
	)

Definition at line 631 of file mmx86.c.

{
    BOOLEAN DoDeferred;
    ULONG DescriptorCount;
    PBL_MEMORY_DESCRIPTOR Descriptor;
    ULONG FinalOffset;
    PHYSICAL_ADDRESS PhysicalAddress;
    ULONGLONG Size;
    NTSTATUS Status;
    PVOID VirtualAddress;
    BL_MEMORY_DESCRIPTOR_LIST FirmwareMdl;
    PLIST_ENTRY Head, NextEntry;

    /* Check which phase this is */
    if (Phase == 1)
    {
        /* In phase 1 we don't initialize deferred mappings */
        DoDeferred = FALSE;
    }
    else
    {
        /* Don't do anything if there's nothing to initialize */
        if (!MmDeferredMappingCount)
        {
            return STATUS_SUCCESS;
        }

        /* We'll do deferred descriptors in phase 2 */
        DoDeferred = TRUE;
    }

    /*
    * Because BL supports cross x86-x64 application launches and a LIST_ENTRY
    * is of variable size, care must be taken here to ensure that we see a
    * consistent view of descriptors. BL uses some offset magic to figure out
    * where the data actually starts, since everything is ULONGLONG past the
    * LIST_ENTRY itself
    */
    FinalOffset = MemoryData->MdListOffset + MemoryData->DescriptorOffset;
    Descriptor = (PBL_MEMORY_DESCRIPTOR)((ULONG_PTR)MemoryData + FinalOffset -
                                         FIELD_OFFSET(BL_MEMORY_DESCRIPTOR, BasePage));

    /* Scan all of them */
    DescriptorCount = MemoryData->DescriptorCount;
    while (DescriptorCount != 0)
    {
        /* Ignore application data */
        if (Descriptor->Type != BlApplicationData)
        {
            /* If this is a ramdisk, do it in phase 2 */
            if ((Descriptor->Type == BlLoaderRamDisk) == DoDeferred)
            {
                /* Get the current physical address and size */
                PhysicalAddress.QuadPart = Descriptor->BasePage << PAGE_SHIFT;
                Size = Descriptor->PageCount << PAGE_SHIFT;

                /* Check if it was already mapped */
                if (Descriptor->VirtualPage)
                {
                    /* Use the existing address */
                    VirtualAddress = (PVOID)(ULONG_PTR)(Descriptor->VirtualPage << PAGE_SHIFT);
                }
                else
                {
                    /* Use the physical address */
                    VirtualAddress = (PVOID)(ULONG_PTR)PhysicalAddress.QuadPart;
                }

                /* Crete the mapping */
                Status = Mmx86MapInitStructure(VirtualAddress,
                                               Size,
                                               PhysicalAddress);
                if (!NT_SUCCESS(Status))
                {
                    return Status;
                }
            }

            /* Check if we're in phase 1 and deferring RAM disk */
            if ((Phase == 1) && (Descriptor->Type == BlLoaderRamDisk))
            {
                MmDeferredMappingCount++;
            }
        }

        /* Move on to the next descriptor */
        DescriptorCount--;
        Descriptor = (PBL_MEMORY_DESCRIPTOR)((ULONG_PTR)Descriptor + MemoryData->DescriptorSize);
    }

    /* In phase 1, also do UEFI mappings */
    if (Phase != 2)
    {
        /* Get the memory map */
        MmMdInitializeListHead(&FirmwareMdl);
        Status = MmFwGetMemoryMap(&FirmwareMdl, BL_MM_FLAG_REQUEST_COALESCING);
        if (!NT_SUCCESS(Status))
        {
            return Status;
        }

        /* Iterate over it */
        Head = FirmwareMdl.First;
        NextEntry = Head->Flink;
        while (NextEntry != Head)
        {
            /* Check if this is a UEFI-related descriptor, unless it's the self-map page */
            Descriptor = CONTAINING_RECORD(NextEntry, BL_MEMORY_DESCRIPTOR, ListEntry);
            if (((Descriptor->Type == BlEfiBootMemory) ||
                 (Descriptor->Type == BlEfiRuntimeCodeMemory) ||
                 (Descriptor->Type == BlEfiRuntimeDataMemory) || // WINBUG?
                 (Descriptor->Type == BlLoaderMemory)) &&
                ((Descriptor->BasePage << PAGE_SHIFT) != Mmx86SelfMapBase.QuadPart))
            {
                /* Identity-map it */
                PhysicalAddress.QuadPart = Descriptor->BasePage << PAGE_SHIFT;
                Status = Mmx86MapInitStructure((PVOID)((ULONG_PTR)Descriptor->BasePage << PAGE_SHIFT),
                                               Descriptor->PageCount << PAGE_SHIFT,
                                               PhysicalAddress);
                if (!NT_SUCCESS(Status))
                {
                    return Status;
                }
            }

            /* Move to the next descriptor */
            NextEntry = NextEntry->Flink;
        }

        /* Reset */
        NextEntry = Head->Flink;
        while (NextEntry != Head)
        {
            /* Get the descriptor */
            Descriptor = CONTAINING_RECORD(NextEntry, BL_MEMORY_DESCRIPTOR, ListEntry);

            /* Skip to the next entry before we free */
            NextEntry = NextEntry->Flink;

            /* Remove and free it */
            MmMdRemoveDescriptorFromList(&FirmwareMdl, Descriptor);
            MmMdFreeDescriptor(Descriptor);
        }
    }

    /* All library mappings identity mapped now */
    return STATUS_SUCCESS;
}

Referenced by MmArchInitialize(), and Mmx86InitializeMemoryMap().

Variable Documentation

BlMmFlushTlb

PBL_MM_FLUSH_TLB BlMmFlushTlb

Definition at line 48 of file mmx86.c.

Referenced by MmArchInitialize().

BlMmMoveVirtualAddressRange

PBL_MM_MOVE_VIRTUAL_ADDRESS_RANGE BlMmMoveVirtualAddressRange

Definition at line 49 of file mmx86.c.

Referenced by MmArchInitialize(), and OslArchKernelSetup().

BlMmRelocateSelfMap

PBL_MM_RELOCATE_SELF_MAP BlMmRelocateSelfMap

Definition at line 47 of file mmx86.c.

Referenced by MmArchInitialize(), and OslArchKernelSetup().

BlMmZeroVirtualAddressRange

PBL_MM_ZERO_VIRTUAL_ADDRESS_RANGE BlMmZeroVirtualAddressRange

Definition at line 50 of file mmx86.c.

Referenced by MmArchInitialize(), and OslArchKernelSetup().

MmArchKsegAddressRange

BL_ADDRESS_RANGE MmArchKsegAddressRange

Definition at line 29 of file mmx86.c.

Referenced by MmArchInitialize().

MmArchKsegBase

ULONG_PTR MmArchKsegBase

Definition at line 26 of file mmx86.c.

Referenced by MmArchInitialize().

MmArchKsegBias

ULONG_PTR MmArchKsegBias

Definition at line 27 of file mmx86.c.

Referenced by MmArchInitialize().

MmArchLargePageSize

ULONG MmArchLargePageSize

Definition at line 28 of file mmx86.c.

Referenced by MmArchInitialize().

MmArchReferencePage

PULONG MmArchReferencePage

Definition at line 34 of file mmx86.c.

Referenced by MmDefInitializeTranslation(), MmDefpMapPhysicalAddress(), and Mmx86InitializeMemoryMap().

MmArchReferencePageSize

ULONG MmArchReferencePageSize

Definition at line 37 of file mmx86.c.

Referenced by MmDefInitializeTranslation(), and Mmx86InitializeMemoryMap().

MmArchTopOfApplicationAddressSpace

ULONG_PTR MmArchTopOfApplicationAddressSpace

Definition at line 30 of file mmx86.c.

Referenced by MmArchInitialize().

MmDeferredMappingCount

ULONG MmDeferredMappingCount

Definition at line 32 of file mmx86.c.

Referenced by Mmx86pMapMemoryRegions().

MmPdeBase

PVOID MmPdeBase

Definition at line 36 of file mmx86.c.

Referenced by MmDefInitializeTranslation().

MmPdpt

PMMPTE MmPdpt

Definition at line 33 of file mmx86.c.

Referenced by MmDefInitializeTranslation(), MmDefpMapPhysicalAddress(), and MmDefpTranslateVirtualAddress().

MmPteBase

PVOID MmPteBase

Definition at line 35 of file mmx86.c.

Referenced by MmDefInitializeTranslation(), and MmDefRelocateSelfMap().

Mmx86DestroySelfMap

PBL_MM_DESTROY_SELF_MAP Mmx86DestroySelfMap

Definition at line 45 of file mmx86.c.

Referenced by MmDefInitializeTranslation().

Mmx86FlushTlb

PBL_MM_FLUSH_TLB Mmx86FlushTlb

Definition at line 43 of file mmx86.c.

Referenced by MmArchInitialize(), MmDefInitializeTranslation(), MmDefpMapPhysicalAddress(), and MmMapPhysicalAddress().

Mmx86FlushTlbEntry

PBL_MM_FLUSH_TLB_ENTRY Mmx86FlushTlbEntry

Definition at line 44 of file mmx86.c.

Referenced by MmDefInitializeTranslation(), and MmDefpMapPhysicalAddress().

Mmx86MapPhysicalAddress

PBL_MM_MAP_PHYSICAL_ADDRESS Mmx86MapPhysicalAddress

Definition at line 40 of file mmx86.c.

Referenced by MmDefInitializeTranslation(), and MmMapPhysicalAddress().

Mmx86RemapVirtualAddress

PBL_MM_REMAP_VIRTUAL_ADDRESS Mmx86RemapVirtualAddress

Definition at line 41 of file mmx86.c.

Referenced by MmDefInitializeTranslation().

Mmx86SelfMapBase

PHYSICAL_ADDRESS Mmx86SelfMapBase

Definition at line 31 of file mmx86.c.

Referenced by MmArchInitialize(), MmDefInitializeTranslation(), and Mmx86pMapMemoryRegions().

Mmx86TranslateVirtualAddress

PBL_MM_TRANSLATE_VIRTUAL_ADDRESS Mmx86TranslateVirtualAddress

Definition at line 39 of file mmx86.c.

Referenced by MmArchTranslateVirtualAddress(), MmDefInitializeTranslation(), and MmDefpMapPhysicalAddress().

Mmx86UnmapVirtualAddress

PBL_MM_UNMAP_VIRTUAL_ADDRESS Mmx86UnmapVirtualAddress

Definition at line 42 of file mmx86.c.

Referenced by MmDefInitializeTranslation().