123 lines
2.4 KiB
C
123 lines
2.4 KiB
C
/*++
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Copyright (c) 2024, Quinn Stephens.
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Provided under the BSD 3-Clause license.
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Module Name:
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mmpa.c
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Abstract:
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Provides memory manager page routines.
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--*/
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#include "bootlib.h"
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#include "mm.h"
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ULONG PapMinimumAllocationCount;
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ULONGLONG PapMinimumPhysicalPage;
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ULONGLONG PapMaximumPhysicalPage;
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MEMORY_DESCRIPTOR_LIST MmMdlFwAllocationTracker;
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MEMORY_DESCRIPTOR_LIST MmMdlBadMemory;
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MEMORY_DESCRIPTOR_LIST MmMdlTruncatedMemory;
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MEMORY_DESCRIPTOR_LIST MmMdlPersistentMemory;
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MEMORY_DESCRIPTOR_LIST MmMdlReservedAllocated;
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MEMORY_DESCRIPTOR_LIST MmMdlMappedAllocated;
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MEMORY_DESCRIPTOR_LIST MmMdlMappedUnallocated;
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MEMORY_DESCRIPTOR_LIST MmMdlUnmappedAllocated;
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MEMORY_DESCRIPTOR_LIST MmMdlUnmappedUnallocated;
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FORCEINLINE
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VOID
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InitializeList (
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IN PMEMORY_DESCRIPTOR_LIST List
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)
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/*++
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Routine Description:
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Initializes a MDL.
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Arguments:
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List - the MDL to initialize.
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Return Value:
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None.
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--*/
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{
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List->Head = NULL;
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List->Current = NULL;
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List->Type = MDL_TYPE_PHYSICAL;
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}
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NTSTATUS
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MmPaInitialize (
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IN PBOOT_MEMORY_INFO MemoryInfo,
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IN ULONG MinimumAllocation
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)
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/*++
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Routine Description:
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Initializes the page allocator.
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Arguments:
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MemoryInfo - pointer to the memory info structure.
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MinimumAllocation - minimum amount of pages to grow the pool by at a time.
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Return Value:
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STATUS_SUCCESS if successful,
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--*/
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{
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NTSTATUS Status;
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(VOID)MemoryInfo;
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DebugPrint(L"Initializing page allocator...\r\n");
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//
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// Initialize page allocator settings.
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//
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PapMinimumAllocationCount = MinimumAllocation;
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PapMinimumPhysicalPage = 1;
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PapMaximumPhysicalPage = MAXULONGLONG >> PAGE_SHIFT;
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DebugPrintf(L"Maximum physical page: %x %x\r\n", (ULONG)(PapMaximumPhysicalPage >> 32), (ULONG)(PapMaximumPhysicalPage));
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//
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// Initialize MDLs.
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//
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InitializeList(&MmMdlFwAllocationTracker);
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InitializeList(&MmMdlBadMemory);
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InitializeList(&MmMdlTruncatedMemory);
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InitializeList(&MmMdlPersistentMemory);
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InitializeList(&MmMdlReservedAllocated);;
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InitializeList(&MmMdlMappedAllocated);
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InitializeList(&MmMdlMappedUnallocated);
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InitializeList(&MmMdlUnmappedAllocated);
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InitializeList(&MmMdlUnmappedUnallocated);
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//
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// Get the firmware memory map.
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//
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Status = MmFwGetMemoryMap(&MmMdlUnmappedUnallocated, 0x03);
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if (!NT_SUCCESS(Status)) {
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return Status;
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}
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return STATUS_SUCCESS;
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}
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