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64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
/**
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MemoryMap helper functions.
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by dmazar
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**/
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#ifndef APTIOFIX_MEMORY_MAP_H
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#define APTIOFIX_MEMORY_MAP_H
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/** MemMap reversed scan */
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#define PREV_MEMORY_DESCRIPTOR(MemoryDescriptor, Size) \
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((EFI_MEMORY_DESCRIPTOR *)((UINT8 *)(MemoryDescriptor) - (Size)))
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/** Shrinks mem map by joining non-runtime records. */
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VOID
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ShrinkMemMap (
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IN OUT UINTN *MemoryMapSize,
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IN OUT EFI_MEMORY_DESCRIPTOR *MemoryMap,
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IN UINTN DescriptorSize
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);
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/** Protects AMI CSM region from being overwritten by the kernel. */
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VOID
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ProtectCsmRegion (
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UINTN MemoryMapSize,
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EFI_MEMORY_DESCRIPTOR *MemoryMap,
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UINTN DescriptorSize
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);
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/** Prints mem map. */
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VOID
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PrintMemMap (
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IN CONST CHAR16 *Name,
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IN UINTN MemoryMapSize,
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IN UINTN DescriptorSize,
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IN EFI_MEMORY_DESCRIPTOR *MemoryMap,
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IN VOID *Shims,
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IN EFI_PHYSICAL_ADDRESS SysTable
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);
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/** Helper function that calls GetMemoryMap(), allocates space for mem map and returns it. */
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EFI_STATUS
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GetMemoryMapAlloc (
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IN OUT UINTN *AllocatedTopPages,
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OUT UINTN *MemoryMapSize,
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OUT EFI_MEMORY_DESCRIPTOR **MemoryMap,
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OUT UINTN *MapKey,
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OUT UINTN *DescriptorSize,
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OUT UINT32 *DescriptorVersion
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);
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/** Alloctes pages from the top of mem, up to address specified in Memory. Returns allocated address in Memory. */
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EFI_STATUS
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AllocatePagesFromTop (
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IN EFI_MEMORY_TYPE MemoryType,
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IN UINTN Pages,
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IN OUT EFI_PHYSICAL_ADDRESS *Memory,
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IN BOOLEAN CheckRange
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);
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#endif // APTIOFIX_MEMORY_MAP_H
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