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[BOOTLIB]: Implement most of Mmx86pMapMemoryRegions. Just missing the UEFI mappings now.

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svn path=/trunk/; revision=73740
This commit is contained in:
Alex Ionescu
2017-02-07 01:52:57 +00:00
parent 58f2a22a11
commit 6e9b30c86a
1 changed files with 100 additions and 35 deletions
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reactos/boot/environ/lib/mm/i386/mmx86.c
+100 -35
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@@ -171,39 +171,6 @@ MmDefZeroVirtualAddressRange (
return STATUS_NOT_IMPLEMENTED;
}
NTSTATUS
Mmx86pMapMemoryRegions (
_In_ ULONG Phase,
_In_ PBL_MEMORY_DATA MemoryData
)
{
BOOLEAN DoDeferred;
/* In phase 1 we don't initialize deferred mappings*/
if (Phase == 1)
{
DoDeferred = 0;
}
else
{
/* Don't do anything if there's nothing to initialize */
if (!MmDeferredMappingCount)
{
return STATUS_SUCCESS;
}
DoDeferred = 1;
}
if (DoDeferred)
{
EfiPrintf(L"Deferred todo\r\n");
}
EfiPrintf(L"Phase 1 TODO\r\n");
return STATUS_NOT_IMPLEMENTED;
}
BOOLEAN
MmArchTranslateVirtualAddress (
_In_ PVOID VirtualAddress,
@@ -696,6 +663,105 @@ Mmx86MapInitStructure (
return Status;
}
NTSTATUS
Mmx86pMapMemoryRegions (
_In_ ULONG Phase,
_In_ PBL_MEMORY_DATA MemoryData
)
{
BOOLEAN DoDeferred;
ULONG DescriptorCount;
PBL_MEMORY_DESCRIPTOR Descriptor;
ULONG FinalOffset;
PHYSICAL_ADDRESS PhysicalAddress;
ULONGLONG Size;
NTSTATUS Status;
PVOID VirtualAddress;
/* In phase 1 we don't initialize deferred mappings*/
if (Phase == 1)
{
DoDeferred = FALSE;
}
else
{
/* Don't do anything if there's nothing to initialize */
if (!MmDeferredMappingCount)
{
return STATUS_SUCCESS;
}
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)
{
EfiPrintf(L"Phase 1 TODO UEFI mappings \r\n");
}
return STATUS_NOT_IMPLEMENTED;
}
NTSTATUS
Mmx86InitializeMemoryMap (
_In_ ULONG Phase,
@@ -766,8 +832,7 @@ Mmx86InitializeMemoryMap (
}
/* More to do */
EfiPrintf(L"VM more work\r\n");
return STATUS_NOT_IMPLEMENTED;
return Mmx86pMapMemoryRegions(Phase, MemoryData);
}
NTSTATUS