mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
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540 lines
16 KiB
C
540 lines
16 KiB
C
/** @file
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Copyright (C) 2019, vit9696. All rights reserved.
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All rights reserved.
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef OC_MEMORY_LIB_H
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#define OC_MEMORY_LIB_H
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#include <Uefi.h>
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#include <Guid/MemoryAttributesTable.h>
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#include <IndustryStandard/VirtualMemory.h>
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/**
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Reverse equivalent of NEXT_MEMORY_DESCRIPTOR.
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**/
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#define PREV_MEMORY_DESCRIPTOR(MemoryDescriptor, Size) \
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((EFI_MEMORY_DESCRIPTOR *)((UINT8 *)(MemoryDescriptor) - (Size)))
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/**
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Get last descriptor address.
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It is assumed that the descriptor contains pages.
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**/
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#define LAST_DESCRIPTOR_ADDR(Desc) \
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((Desc)->PhysicalStart + (EFI_PAGES_TO_SIZE ((UINTN) (Desc)->NumberOfPages) - 1))
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/**
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Check if area is within the specified descriptor.
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It is assumed that the descriptor contains pages and AreaSize is not 0.
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**/
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#define AREA_WITHIN_DESCRIPTOR(Desc, Area, AreaSize) \
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((Area) >= (Desc)->PhysicalStart && ((Area) + ((AreaSize) - 1)) <= LAST_DESCRIPTOR_ADDR (Desc))
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/**
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Reasonable default virtual memory page pool size (2 MB).
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**/
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#define OC_DEFAULT_VMEM_PAGE_COUNT 0x200
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/**
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Reasonable default memory map size used when allocations are problematic.
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Note, that MacPro5,1 is known to have 8880 memory map.
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**/
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#define OC_DEFAULT_MEMORY_MAP_SIZE (EFI_PAGE_SIZE*3)
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/**
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Lock the legacy region specified to enable modification.
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@param[in] LegacyAddress The address of the region to lock.
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@param[in] LegacyLength The size of the region to lock.
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@retval EFI_SUCCESS The region was locked successfully.
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**/
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EFI_STATUS
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LegacyRegionLock (
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IN UINT32 LegacyAddress,
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IN UINT32 LegacyLength
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);
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/**
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Unlock the legacy region specified to enable modification.
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@param[in] LegacyAddress The address of the region to unlock.
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@param[in] LegacyLength The size of the region to unlock.
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@retval EFI_SUCCESS The region was unlocked successfully.
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**/
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EFI_STATUS
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LegacyRegionUnlock (
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IN UINT32 LegacyAddress,
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IN UINT32 LegacyLength
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);
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/**
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Get current memory map allocated on pool with reserved entries.
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@param[out] MemoryMapSize Resulting memory map size in bytes.
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@param[out] DescriptorSize Resulting memory map descriptor size in bytes.
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@param[out] MapKey Memory map key, optional.
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@param[out] DescriptorVersion Memory map descriptor version, optional.
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@param[out] OriginalMemoryMapSize Actual pool allocation memory, optional.
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@param[out] IncludeSplitSpace Allocate memory to permit splitting memory map.
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@retval current memory map or NULL.
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**/
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EFI_MEMORY_DESCRIPTOR *
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OcGetCurrentMemoryMap (
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OUT UINTN *MemoryMapSize,
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OUT UINTN *DescriptorSize,
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OUT UINTN *MapKey OPTIONAL,
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OUT UINT32 *DescriptorVersion OPTIONAL,
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OUT UINTN *OriginalMemoryMapSize OPTIONAL,
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IN BOOLEAN IncludeSplitSpace
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);
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/**
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Get current memory map of custom allocation.
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@param[out] MemoryMapSize Resulting memory map size in bytes.
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@param[out] MemoryMap Resulting memory map.
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@param[out] MapKey Memory map key.
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@param[out] DescriptorSize Resulting memory map descriptor size in bytes.
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@param[out] DescriptorVersion Memory map descriptor version.
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@param[in] GetMemoryMap Custom GetMemoryMap implementation to use, optional.
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@param[in,out] TopMemory Base top address for OcAllocatePagesFromTop allocation, number of pages after return.
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@retval EFI_SUCCESS on success.
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**/
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EFI_STATUS
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OcGetCurrentMemoryMapAlloc (
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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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IN EFI_GET_MEMORY_MAP GetMemoryMap OPTIONAL,
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IN OUT EFI_PHYSICAL_ADDRESS *TopMemory OPTIONAL
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);
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/**
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Sort memory map entries based upon PhysicalStart, from low to high.
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@param MemoryMapSize Size, in bytes, of the MemoryMap buffer.
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@param MemoryMap A pointer to the buffer in which firmware places
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the current memory map.
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@param DescriptorSize Size, in bytes, of an individual EFI_MEMORY_DESCRIPTOR.
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**/
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VOID
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OcSortMemoryMap (
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IN 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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/**
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Shrink memory map by joining non-runtime records.
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Requires sorted memory map.
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@param[in,out] MemoryMapSize Memory map size in bytes, updated on shrink.
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@param[in,out] MemoryMap Memory map to shrink.
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@param[in] DescriptorSize Memory map descriptor size in bytes.
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@retval EFI_SUCCESS on success.
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@retval EFI_NOT_FOUND when cannot join anything.
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**/
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EFI_STATUS
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OcShrinkMemoryMap (
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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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/**
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Deduplicate memory descriptors. Requires sorted entry list.
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@param[in,out] EntryCount Memory map size in entries, updated on shrink.
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@param[in,out] MemoryMap Memory map to shrink.
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@param[in] DescriptorSize Memory map descriptor size in bytes.
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@retval EFI_SUCCESS on success.
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@retval EFI_NOT_FOUND when cannot join anything.
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**/
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EFI_STATUS
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OcDeduplicateDescriptors (
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IN OUT UINT32 *EntryCount,
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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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/**
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Check range allocation compatibility callback.
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@param[in] Address Starting address.
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@param[in] Size Size of memory range.
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@retval TRUE when suitable for allocation.
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**/
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typedef
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BOOLEAN
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(*CHECK_ALLOCATION_RANGE) (
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IN EFI_PHYSICAL_ADDRESS Address,
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IN UINTN Size
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);
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/**
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Filter memory map entries.
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@param[in] Context Parameterised filter data.
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@param[in,out] MemoryMapSize Memory map size in bytes.
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@param[in,out] MemoryMap Memory map to filter.
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@param[in] DescriptorSize Memory map descriptor size in bytes.
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**/
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typedef
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VOID
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(*OC_MEMORY_FILTER) (
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IN VOID *Context OPTIONAL,
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IN 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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/**
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Allocate pages from the top of physical memory up to address specified in Memory.
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Unlike AllocateMaxAddress, this method guarantees to choose top most address.
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@param[in] MemoryType Allocated memory type.
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@param[in] Pages Amount of pages to allocate.
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@param[in,out] Memory Top address for input, allocated address for output.
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@param[in] GetMemoryMap Custom GetMemoryMap implementation to use, optional.
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@param[in] CheckRange Handler allowing to not allocate select ranges, optional.
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@retval EFI_SUCCESS on successful allocation.
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**/
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EFI_STATUS
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OcAllocatePagesFromTop (
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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 EFI_GET_MEMORY_MAP GetMemoryMap OPTIONAL,
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IN CHECK_ALLOCATION_RANGE CheckRange OPTIONAL
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);
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/**
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Calculate number of runtime pages in the memory map.
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@param[in] MemoryMapSize Memory map size in bytes.
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@param[in] MemoryMap Memory map to inspect.
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@param[in] DescriptorSize Memory map descriptor size in bytes.
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@param[out] DescriptorCount Number of relevant descriptors, optional.
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@retval Number of runtime pages.
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**/
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UINT64
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OcCountRuntimePages (
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IN UINTN MemoryMapSize,
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IN EFI_MEMORY_DESCRIPTOR *MemoryMap,
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IN UINTN DescriptorSize,
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OUT UINTN *DescriptorCount OPTIONAL
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);
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/**
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Calculate number of free pages in the memory map.
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@param[out] LowerMemory Number of free pages below 4 GB, optional.
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@retval Number of free pages.
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**/
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UINTN
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OcCountFreePages (
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OUT UINTN *LowerMemory OPTIONAL
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);
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/**
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Print memory attributes table if present.
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**/
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VOID
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OcPrintMemoryAttributesTable (
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VOID
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);
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/**
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Print memory map.
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@param[in] MemoryMapSize Memory map size in bytes.
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@param[in] MemoryMap Memory map to print.
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@param[in] DescriptorSize Memory map descriptor size in bytes.
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**/
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VOID
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OcPrintMemoryMap (
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IN UINTN MemoryMapSize,
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IN EFI_MEMORY_DESCRIPTOR *MemoryMap,
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IN UINTN DescriptorSize
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);
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/**
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Refresh memory descriptor containing the specified address.
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@param[in] MemoryMapSize Memory map size in bytes.
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@param[in] MemoryMap Memory map to refresh.
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@param[in] DescriptorSize Memory map descriptor size in bytes.
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@param[in] Address Address contained in the updated entry.
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@param[in] Type Memory type to assign to the entry.
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@param[in] SetAttributes Attributes to set.
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@param[in] DropAttributes Attributes to remove.
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@retval EFI_SUCCESS on success.
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@retval EFI_NOT_FOUND no entry contains the specified address.
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@retval EFI_UNSUPPORTED memory attributes are not supported by the platform.
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**/
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EFI_STATUS
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OcUpdateDescriptors (
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IN UINTN MemoryMapSize,
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IN EFI_MEMORY_DESCRIPTOR *MemoryMap,
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IN UINTN DescriptorSize,
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IN EFI_PHYSICAL_ADDRESS Address,
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IN EFI_MEMORY_TYPE Type,
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IN UINT64 SetAttributes,
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IN UINT64 DropAttributes
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);
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/**
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Obtain memory attributes table.
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@param[out] MemoryAttributesEntry memory descriptor pointer, optional.
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@retval pointer to memory attributes table.
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@retval NULL if memory attributes table is unsupported.
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**/
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EFI_MEMORY_ATTRIBUTES_TABLE *
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OcGetMemoryAttributes (
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OUT EFI_MEMORY_DESCRIPTOR **MemoryAttributesEntry OPTIONAL
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);
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/**
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Refresh memory attributes entry containing the specified address.
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@param[in] Address Address contained in the updated entry.
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@param[in] GetMemoryMap
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@retval EFI_SUCCESS on success.
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@retval EFI_NOT_FOUND no entry contains the specified address.
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@retval EFI_UNSUPPORTED memory attributes are not supported by the platform.
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**/
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EFI_STATUS
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OcRebuildAttributes (
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IN EFI_PHYSICAL_ADDRESS Address,
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IN EFI_GET_MEMORY_MAP GetMemoryMap OPTIONAL
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);
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/**
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Count upper bound of split runtime descriptors.
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@retval amount of runtime descriptors.
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**/
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UINTN
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OcCountSplitDescriptors (
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VOID
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);
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/**
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Split memory map by memory attributes if available.
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Requires sorted memory map!
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@param[in] MaxMemoryMapSize Upper memory map size bound for growth.
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@param[in,out] MemoryMapSize Current memory map size, updated on return.
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@param[in,out] MemoryMap Memory map to split.
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@param[in] DescriptorSize Memory map descriptor size.
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Note, the function is guaranteed to return valid memory map, though not necessarily split.
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@retval EFI_SUCCESS on success.
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@retval EFI_UNSUPPORTED memory attributes are not supported by the platform.
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@retval EFI_OUT_OF_RESOURCES new memory map did not fit.
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**/
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EFI_STATUS
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OcSplitMemoryMapByAttributes (
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IN UINTN MaxMemoryMapSize,
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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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/**
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Return pointer to PML4 table in PageTable and PWT and PCD flags in Flags.
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@param[out] Flags Current page table PWT and PCT flags.
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@retval Current page table address.
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**/
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PAGE_MAP_AND_DIRECTORY_POINTER *
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OcGetCurrentPageTable (
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OUT UINTN *Flags OPTIONAL
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);
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/**
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Return physical addrress for given virtual addrress.
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@param[in] PageTable Page table to use for solving.
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@param[in] VirtualAddr Virtual address to look up.
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@param[out] PhysicalAddr Physical address to return.
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@retval EFI_SUCCESS on successful lookup.
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**/
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EFI_STATUS
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OcGetPhysicalAddress (
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IN PAGE_MAP_AND_DIRECTORY_POINTER *PageTable OPTIONAL,
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IN EFI_VIRTUAL_ADDRESS VirtualAddr,
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OUT EFI_PHYSICAL_ADDRESS *PhysicalAddr
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);
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/**
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Virtual memory context
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**/
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typedef struct OC_VMEM_CONTEXT_ {
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///
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/// Memory pool containing memory to be spread across allocations.
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///
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UINT8 *MemoryPool;
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///
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/// Free pages in the memory pool.
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///
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UINTN FreePages;
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} OC_VMEM_CONTEXT;
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/**
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Allocate EfiBootServicesData virtual memory pool from boot services
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in the end of BASE_4GB of RAM. Should be called while boot services are
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still usable.
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@param[out] Context Virtual memory pool context.
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@param[in] NumPages Number of pages to be allocated in the pool.
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@param[in] GetMemoryMap Custom GetMemoryMap implementation to use, optional.
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@retval EFI_SUCCESS on successful allocation.
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**/
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EFI_STATUS
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VmAllocateMemoryPool (
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OUT OC_VMEM_CONTEXT *Context,
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IN UINTN NumPages,
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IN EFI_GET_MEMORY_MAP GetMemoryMap OPTIONAL
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);
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/**
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Allocate pages for e.g. vm page maps.
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@param[in,out] Context Virtual memory pool context.
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@param[in] NumPages Number of pages to allocate.
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@retval allocated pages or NULL.
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**/
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VOID *
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VmAllocatePages (
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IN OUT OC_VMEM_CONTEXT *Context,
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IN UINTN NumPages
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);
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/**
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Map (remap) given page at physical address to given virtual address in
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the specified page table.
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@param[in,out] Context Virtual memory pool context.
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@param[in] PageTable Page table to update.
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@param[in] VirtualAddr Virtual memory address to map at.
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@param[in] PhysicalAddr Physical memory address to map from.
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@retval EFI_SUCCESS on success.
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**/
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EFI_STATUS
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VmMapVirtualPage (
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IN OUT OC_VMEM_CONTEXT *Context,
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IN OUT PAGE_MAP_AND_DIRECTORY_POINTER *PageTable OPTIONAL,
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IN EFI_VIRTUAL_ADDRESS VirtualAddr,
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IN EFI_PHYSICAL_ADDRESS PhysicalAddr
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);
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/**
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Map (remap) a range of 4K pages at physical address to given virtual address
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in the specified page table.
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@param[in,out] Context Virtual memory pool context.
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@param[in] PageTable Page table to update.
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@param[in] VirtualAddr Virtual memory address to map at.
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@param[in] NumPages Number of 4K pages to map.
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@param[in] PhysicalAddr Physical memory address to map from.
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@retval EFI_SUCCESS on success.
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**/
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EFI_STATUS
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VmMapVirtualPages (
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IN OUT OC_VMEM_CONTEXT *Context,
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IN OUT PAGE_MAP_AND_DIRECTORY_POINTER *PageTable OPTIONAL,
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IN EFI_VIRTUAL_ADDRESS VirtualAddr,
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IN UINT64 NumPages,
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IN EFI_PHYSICAL_ADDRESS PhysicalAddr
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);
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/**
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Flushes TLB caches.
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**/
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VOID
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VmFlushCaches (
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VOID
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);
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/**
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Check whether built-in allocator is initialized.
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@retval TRUE on success.
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**/
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BOOLEAN
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UmmInitialized (
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VOID
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);
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/**
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Initialize built-in allocator.
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@param[in] Heap Memory pool used for allocations.
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@param[in] Size Memory pool size.
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**/
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VOID
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UmmSetHeap (
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IN VOID *Heap,
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IN UINT32 Size
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);
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/**
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Perform allocation from built-in allocator.
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@param[in] Size Allocation size.
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@retval allocated memory on success.
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**/
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VOID *
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UmmMalloc (
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IN UINT32 Size
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);
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/**
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Perform free of allocated memory. Accepts NULL pointer
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and checks whether memory belongs to itself.
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@param[in] Ptr Memory to free.
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@retval TRUE on success
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**/
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BOOLEAN
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UmmFree (
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IN VOID *Ptr
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);
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#endif // OC_MEMORY_LIB_H
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